Powered by Deep Web Technologies
Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Optimal design of ultrahigh-energy laser amplifier chain with high storage energy extraction  

Science Journals Connector (OSTI)

This paper presents the concept of constant-fluence amplification. It refers to the fact that laser fluence anywhere in the amplifier gain medium is identical to the design fluence...

Liu, Qiang; Hong, Hailong; Fu, Xing; Sui, Zhan; Huang, Lei; Gong, Mali

2013-01-01T23:59:59.000Z

2

Optimizing conversion efficiency and reducing ion energy in a laser-produced Gd plasma  

SciTech Connect (OSTI)

We have demonstrated an efficient extreme ultraviolet (EUV) source at 6.7 nm by irradiating Gd targets with 0.8 and 1.06 {mu}m laser pulses of 140 fs to 10 ns duration. Maximum conversion efficiency of 0.4% was observed within a 0.6% bandwidth. A Faraday cup observed ion yield and time of flight signals for ions from plasmas generated by each laser. Ion kinetic energy was lower for shorter pulse durations, which yielded higher electron temperatures required for efficient EUV emission, due to higher laser intensity. Picosecond laser pulses were found to be the best suited to 6.7 nm EUV source generation.

Cummins, Thomas; Li Bowen; O'Gorman, Colm; Dunne, Padraig; Sokell, Emma; O'Sullivan, Gerry [School of Physics, University College Dublin, Belfield, Dublin 4 (Ireland); Otsuka, Takamitsu [Department of Advanced Interdisciplinary Sciences, Center for Optical Research and Education (CORE), and Optical Technology Innovation Center (OpTIC), Utsunomiya University, Yoto 7-1-2, Utsunomiya, Tochigi 321-8585 (Japan); Yugami, Noboru; Higashiguchi, Takeshi [Department of Advanced Interdisciplinary Sciences, Center for Optical Research and Education (CORE), and Optical Technology Innovation Center (OpTIC), Utsunomiya University, Yoto 7-1-2, Utsunomiya, Tochigi 321-8585 (Japan); Japan Science and Technology Agency, CREST, 4-1-8 Honcho, Kanagawa, Saitama 332-0012 (Japan); Jiang Weihua [Department of Electrical Engineering, Nagaoka University of Technology, Kami-tomiokamachi 1603-1, Nagaoka, Niigata 940-2188 (Japan); Endo, Akira [Research Institute for Science and Engineering, Waseda University, Okubo 3-4-1, Shinjuku, Tokyo 169-8555 (Japan)

2012-02-06T23:59:59.000Z

3

Spot-shadowing optimization to mitigate damage growth in a high-energy-laser amplifier chain  

E-Print Network [OSTI]

The Institute of Optics, University of Rochester, 275 Hutchison Road, Rochester, New York 14627, USA 3 Lawrence Livermore National Laboratory, 7000 East Avenue, L-465, Livermore, California 94550, USA *Corresponding. Introduction Large solid-state lasers, such as the National Igni- tion Facility (NIF) [1] and OMEGA EP [2

Fienup, James R.

4

Energy Harvesting Optimization  

E-Print Network [OSTI]

Energy Harvesting Optimization Power Systems Analysis Final Project into energy harvesting techniques about two decade ago as a valuable way to satisfy those new demands. Energy harvesting derives energy from the ambient environment

Lavaei, Javad

5

Cost Optimal Energy Performance  

Science Journals Connector (OSTI)

EPBD recast requires Member States (MS) to ensure that minimum energy performance requirements of buildings are set with a view to achieving cost optimal levels using a comparative methodology framework...1]. Cost

Jarek Kurnitski

2013-01-01T23:59:59.000Z

6

Nuclear energy density optimization  

Science Journals Connector (OSTI)

We carry out state-of-the-art optimization of a nuclear energy density of Skyrme type in the framework of the Hartree-Fock-Bogoliubov theory. The particle-hole and particle-particle channels are optimized simultaneously, and the experimental data set includes both spherical and deformed nuclei. The new model-based, derivative-free optimization algorithm used in this work has been found to be significantly better than standard optimization methods in terms of reliability, speed, accuracy, and precision. The resulting parameter set unedf0 results in good agreement with experimental masses, radii, and deformations and seems to be free of finite-size instabilities. An estimate of the reliability of the obtained parameterization is given, based on standard statistical methods. We discuss new physics insights offered by the advanced covariance analysis.

M. Kortelainen; T. Lesinski; J. Moré; W. Nazarewicz; J. Sarich; N. Schunck; M. V. Stoitsov; S. Wild

2010-08-13T23:59:59.000Z

7

Laser Fusion Energy The High Average Power  

E-Print Network [OSTI]

Laser Fusion Energy and The High Average Power Program John Sethian Naval Research Laboratory Dec for Inertial Fusion Energy with lasers, direct drive targets and solid wall chambers Lasers DPPSL (LLNL) Kr posters Snead Payne #12;Laser(s) Goals 1. Develop technologies that can meet the fusion energy

8

PARAMETER OPTIMIZATIONS FOR VACUUM LASER ACCELERATION AT ATF...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

PARAMETER OPTIMIZATIONS FOR VACUUM LASER ACCELERATION AT ATFBNL * V. Yakimenko , M. Babzien, I. Ben-Zvi, K. Kusche, I. Pogorelsky, X. Wang Brookhaven National Laboratory ,...

9

Optimizing performance of energy systems  

SciTech Connect (OSTI)

This book discusses optimizing performance of energy systems. Topics covered include a test station, heat flow integrator, microcomputer control of MIMIC operation, and microcomputer control of simulation operation.

Stricker, S.

1985-01-01T23:59:59.000Z

10

Building Energy Optimization Software | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Energy Energy Optimization Software Building Energy Optimization Software BEopt 2.1 Now Available! BEopt Version 2.1 is now available and includes major features such as: mini-split heat pumps and room air conditioners (E+); new modeling inputs; component-based air leakage estimate for existing buildings; and more. Read about the new features and visit the BEopt website to download. To help meet Building America's goal to develop market-ready energy solutions that improve efficiency of new and existing homes, the National Renewable Energy Laboratory (NREL) developed the Building Energy Optimization (BEopt) software tool. This specialized computer program is designed to identify optimally efficient designs for new and existing homes at the lowest possible cost. BEopt produces detailed simulation-based analysis and design optimization

11

Energy optimization system  

DOE Patents [OSTI]

A system for optimizing customer utility usage in a utility network of customer sites, each having one or more utility devices, where customer site is communicated between each of the customer sites and an optimization server having software for optimizing customer utility usage over one or more networks, including private and public networks. A customer site model for each of the customer sites is generated based upon the customer site information, and the customer utility usage is optimized based upon the customer site information and the customer site model. The optimization server can be hosted by an external source or within the customer site. In addition, the optimization processing can be partitioned between the customer site and an external source.

Zhou, Zhi; de Bedout, Juan Manuel; Kern, John Michael; Biyik, Emrah; Chandra, Ramu Sharat

2013-01-22T23:59:59.000Z

12

Building Energy Optimization Analysis Method (BEopt) - Building...  

Energy Savers [EERE]

Energy Optimization Analysis Method (BEopt) - Building America Top Innovation Building Energy Optimization Analysis Method (BEopt) - Building America Top Innovation House graphic...

13

DOE Zero Energy Ready Home Webinar: Building Energy Optimization...  

Broader source: Energy.gov (indexed) [DOE]

Building Energy Optimization (BEopt) Software DOE Zero Energy Ready Home Webinar: Building Energy Optimization (BEopt) Software This webinar was presented on May 15, 2014 and gives...

14

Pump Systems Optimization: Energy Efficiency  

Broader source: Energy.gov (indexed) [DOE]

Pump Systems Pump Systems Optimization: Energy Efficiency and Bottom-Line Savings Host this one-day course to help participants learn how to identify and reduce hidden operation and energy costs. Participants will: * Identify energy savings * Increase profitability * Increase reliability * Earn seven PDH credits Attendees of the "Pump Systems Optimization" one-day course will gain valuable new skills to help them improve centrifugal pump system efficiency to reduce energy and operating costs while earning seven professional development hour (PDH) credits from the Hydraulic Institute. Topics covered include:* * Why Efficient Pump Systems Are Important

15

Building Technologies Office: Building Energy Optimization Software  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Building Energy Building Energy Optimization Software to someone by E-mail Share Building Technologies Office: Building Energy Optimization Software on Facebook Tweet about Building Technologies Office: Building Energy Optimization Software on Twitter Bookmark Building Technologies Office: Building Energy Optimization Software on Google Bookmark Building Technologies Office: Building Energy Optimization Software on Delicious Rank Building Technologies Office: Building Energy Optimization Software on Digg Find More places to share Building Technologies Office: Building Energy Optimization Software on AddThis.com... About Take Action to Save Energy Partner With DOE Activities Solar Decathlon Building America Research Innovations Research Tools Building Science Education Climate-Specific Guidance

16

Two-dimensional optimization of free-electron-laser designs  

DOE Patents [OSTI]

Off-axis, two-dimensional designs for free electron lasers are described that maintain correspondence of a light beam with a synchronous electron at an optimal transverse radius r > 0 to achieve increased beam trapping efficiency and enhanced laser beam wavefront control so as to decrease optical beam diffraction and other deleterious effects.

Prosnitz, D.; Haas, R.A.

1982-05-04T23:59:59.000Z

17

Two-dimensional optimization of free electron laser designs  

DOE Patents [OSTI]

Off-axis, two-dimensional designs for free electron lasers that maintain correspondence of a light beam with a "synchronous electron" at an optimal transverse radius r>0 to achieve increased beam trapping efficiency and enhanced laser beam wavefront control so as to decrease optical beam diffraction and other deleterious effects.

Prosnitz, Donald (Walnut Creek, CA); Haas, Roger A. (Pleasanton, CA)

1985-01-01T23:59:59.000Z

18

Laser Drills Could Relight Geothermal Energy Dreams | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Laser Drills Could Relight Geothermal Energy Dreams Laser Drills Could Relight Geothermal Energy Dreams December 14, 2012 - 12:26pm Addthis Commercial-grade laser technology is...

19

NREL-Renewable Energy Optimization Presentation | Open Energy Information  

Open Energy Info (EERE)

NREL-Renewable Energy Optimization Presentation NREL-Renewable Energy Optimization Presentation (Redirected from Renewable Energy Optimization Presentation) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Renewable Energy Optimization Presentation Agency/Company /Organization: National Renewable Energy Laboratory Resource Type: Presentation, Training materials Website: www1.eere.energy.gov/femp/pdfs/rewg051909_walker.pdf References: Renewable Energy Optimization Presentation[1] Logo: Renewable Energy Optimization Presentation Presentation References ↑ "Renewable Energy Optimization Presentation" Retrieved from "http://en.openei.org/w/index.php?title=NREL-Renewable_Energy_Optimization_Presentation&oldid=382818" Category: Tools What links here Related changes Special pages

20

Optimization of Geoscience Laser Altimeter System waveform metrics to support vegetation measurements  

E-Print Network [OSTI]

Optimization of Geoscience Laser Altimeter System waveform metrics to support vegetation GLAS Optimization Remote sensing Vegetation structure The Geoscience Laser Altimeter System (GLAS) has optimized a noise coefficient which could be constant or vary according to observation period or noise

Lefsky, Michael

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Process and Energy Optimization Revitalizes Energy Management at Eastman  

E-Print Network [OSTI]

In 2005, the Eastman-Texas Operations Energy Management Team (EMT), in response to rapidly increasing energy prices, initiated a new energy optimization program to optimize the site’s energy intensity. This new program utilized a process and energy...

Greenwaldt, W. C.

2007-01-01T23:59:59.000Z

22

Cleanroom Energy Optimization Methods  

E-Print Network [OSTI]

in many parts of the country. The purpose of this article is to inform the reader. Whereas, the obvious benefits for energy conservation policies are mainly ecological; corporations with vision can implement policies that also contribute... significantly to the bottom line. Semiconductor Cleanroom Energy Based upon surveys the Semiconductor industry has over 12,800,000 ft2 (1,190,000 m2) of cleanroom space in the United States varying in cleanliness from Class M1 (ISO Class 3) to Class M6...

Naughton, P.; Schrecengost, R.

2004-01-01T23:59:59.000Z

23

Optimal Energy Systems | Open Energy Information  

Open Energy Info (EERE)

Optimal Energy Systems Optimal Energy Systems Jump to: navigation, search Name Optimal Energy Systems Place Torrance, California Zip 90505 Product Manufacturer of flywheel power system, specialising in aerospace and defence sector. Coordinates 40.417285°, -79.223959° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.417285,"lon":-79.223959,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

24

Staging laser plasma accelerators for increased beam energy  

E-Print Network [OSTI]

Staging Laser Plasma Accelerators for Increased Beam EnergyStaging laser plasma accelerators is an efficient way ofcompact laser-plasma accelerators to generate particle

Panasenko, Dmitriy

2010-01-01T23:59:59.000Z

25

Energy Optimizers USA | Open Energy Information  

Open Energy Info (EERE)

Optimizers USA Optimizers USA Jump to: navigation, search Name Energy Optimizers USA Address 6 S. 3rd Street Place Tipp City, Ohio Zip 45371 Sector Biomass, Carbon, Geothermal energy, Services, Solar, Wind energy Product Business and legal services;Consulting;Energy audits/weatherization; Engineering/architectural/design;Installation;Investment/finances; Trainining and education Phone number 937-877-1919 Website http://www.energyoptimizersusa Coordinates 39.9610217°, -84.1712945° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.9610217,"lon":-84.1712945,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

26

Apparatus for advancing a wellbore using high power laser energy  

DOE Patents [OSTI]

Delivering high power laser energy to form a borehole deep into the earth using laser energy. Down hole laser tools, laser systems and laser delivery techniques for advancement, workover and completion activities. A laser bottom hole assembly (LBHA) for the delivery of high power laser energy to the surfaces of a borehole, which assembly may have laser optics, a fluid path for debris removal and a mechanical means to remove earth.

Zediker, Mark S.; Land, Mark S.; Rinzler, Charles C.; Faircloth, Brian O.; Koblick, Yeshaya; Moxley, Joel F.

2014-09-02T23:59:59.000Z

27

Renewable Energy Optimization (REopt) (Fact Sheet)  

SciTech Connect (OSTI)

REopt is an energy planning platform offering concurrent, multiple technology integration and optimization capabilities to help clients meet their cost savings and energy performance goals.

Not Available

2014-06-01T23:59:59.000Z

28

Laser Catalyst - Energy Innovation Portal  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Industrial Technologies Industrial Technologies Find More Like This Return to Search Laser Catalyst Idaho National Laboratory Contact INL About This Technology Technology Marketing...

29

Optimal Energy-Bandwidth Allocation for Energy Harvesting Interference Networks  

E-Print Network [OSTI]

Optimal Energy-Bandwidth Allocation for Energy Harvesting Interference Networks Zhe Wang, Vaneet@research.att.com Abstract--We develop optimal energy-bandwidth allocation algorithm for the energy harvesting transmitters in interference networks. We assume that both the channel gain and the harvested energy are known for K slots

Fisher, Kathleen

30

Novel free-form hohlraum shape design and optimization for laser-driven inertial confinement fusion  

SciTech Connect (OSTI)

The hohlraum shape attracts considerable attention because there is no successful ignition method for laser-driven inertial confinement fusion at the National Ignition Facility. The available hohlraums are typically designed with simple conic curves, including ellipses, parabolas, arcs, or Lame curves, which allow only a few design parameters for the shape optimization, making it difficult to improve the performance, e.g., the energy coupling efficiency or radiation drive symmetry. A novel free-form hohlraum design and optimization approach based on the non-uniform rational basis spline (NURBS) model is proposed. In the present study, (1) all kinds of hohlraum shapes can be uniformly represented using NURBS, which is greatly beneficial for obtaining the optimal available hohlraum shapes, and (2) such free-form uniform representation enables us to obtain an optimal shape over a large design domain for the hohlraum with a more uniform radiation and higher drive temperature of the fuel capsule. Finally, a hohlraum is optimized and evaluated with respect to the drive temperature and symmetry at the Shenguang III laser facility in China. The drive temperature and symmetry results indicate that such a free-form representation is advantageous over available hohlraum shapes because it can substantially expand the shape design domain so as to obtain an optimal hohlraum with high performance.

Jiang, Shaoen; Jing, Longfei, E-mail: scmyking-2008@163.com; Ding, Yongkun [Laser Fusion Research Center, China Academy Engineering Physics, Mianyang 621900 (China); Huang, Yunbao, E-mail: huangyblhy@gmail.com [Mechatronics School of Guangdong University of Technology, Guangzhou 510006 (China)

2014-10-15T23:59:59.000Z

31

Characterization and Optimization of a Powder Feed Nozzle for High Deposition Laser Cladding  

E-Print Network [OSTI]

175 Characterization and Optimization of a Powder Feed Nozzle for High Deposition Laser Cladding Abstract Laser cladding is a process for depositing corrosion resistant and wear resistant materials. With high deposition rate laser cladding, a powder mass is pre-placed in front of a scanned laser beam using

Omiecinski, Curtis

32

Energy and cost optimization in industrial models  

Science Journals Connector (OSTI)

A program for Linear Energy Optimization (LEO...) which was used to investigate thermodynamical and technical options of reducing the energy-consumption of industrialized countries is extended to handle the cost ...

H. -M. Groscurth; R. Kümmel

1990-01-01T23:59:59.000Z

33

Energy Department Selects Global Laser Enrichment for Future...  

Broader source: Energy.gov (indexed) [DOE]

Department Selects Global Laser Enrichment for Future Operations at Paducah Site Energy Department Selects Global Laser Enrichment for Future Operations at Paducah Site November...

34

Dichroic beamsplitter for high energy laser diagnostics  

DOE Patents [OSTI]

Wavefront control techniques are provided for the alignment and performance optimization of optical devices. A Shack-Hartmann wavefront sensor can be used to measure the wavefront distortion and a control system generates feedback error signal to optics inside the device to correct the wavefront. The system can be calibrated with a low-average-power probe laser. An optical element is provided to couple the optical device to a diagnostic/control package in a way that optimizes both the output power of the optical device and the coupling of the probe light into the diagnostics.

LaFortune, Kai N (Livermore, CA); Hurd, Randall (Tracy, CA); Fochs, Scott N (Livermore, CA); Rotter, Mark D (San Ramon, CA); Hackel, Lloyd (Livermore, CA)

2011-08-30T23:59:59.000Z

35

High energy laser beam dump  

DOE Patents [OSTI]

The laser beam dump is positioned in a housing. An absorbing glass plate means is operatively connected to the housing. A heat sync means for extracting heat from the absorbing glass plate means is operatively connected to the housing and operatively connected to the absorbing glass plate means.

Halpin, John (Tracy, CA)

2004-09-14T23:59:59.000Z

36

Energy Optimization (Electric) - Residential Efficiency Program |  

Broader source: Energy.gov (indexed) [DOE]

Energy Optimization (Electric) - Residential Efficiency Program Energy Optimization (Electric) - Residential Efficiency Program Energy Optimization (Electric) - Residential Efficiency Program < Back Eligibility Multi-Family Residential Residential Savings Category Home Weatherization Commercial Weatherization Heating & Cooling Cooling Commercial Heating & Cooling Appliances & Electronics Heat Pumps Commercial Lighting Lighting Water Heating Windows, Doors, & Skylights Maximum Rebate Ceiling Fans: 4 Smart Power Strip: 2 Pipe Wrap: 10 ln. ft. CFL Bulbs: 12 Refrigerator Recycling: 2 Program Info State Michigan Program Type Utility Rebate Program Rebate Amount CFL Bulbs: Varies by retailer Ceiling Fan: $15 CFL Fixture: $15 LED Fixture/Downlight Kit: $20 LED Light Bulbs: $10 Smart Power Strip: $20 Room Air Conditioners: $20

37

Energy Optimization (Electric) - Commercial Efficiency Program | Department  

Broader source: Energy.gov (indexed) [DOE]

Energy Optimization (Electric) - Commercial Efficiency Program Energy Optimization (Electric) - Commercial Efficiency Program Energy Optimization (Electric) - Commercial Efficiency Program < Back Eligibility Commercial Industrial Savings Category Other Home Weatherization Commercial Weatherization Sealing Your Home Heating & Cooling Commercial Heating & Cooling Cooling Manufacturing Ventilation Construction Heat Pumps Appliances & Electronics Commercial Lighting Lighting Water Heating Windows, Doors, & Skylights Maximum Rebate General: See program web site Custom: 50% of project cost Program Info Expiration Date 12/31/2013 State Michigan Program Type Utility Rebate Program Rebate Amount Custom: $0.06/kWh/yr saved CFL Bulbs: $1 - $5 CFL Fixtures: $22/fixture High Performance T8 Lighting Retrofit: $4-$20/fixture retrofit

38

Staging Laser Plasma Accelerators for Increased Beam Energy  

E-Print Network [OSTI]

Staging Laser Plasma Accelerators for Increased Beam Energy D. Panasenko, A. J. Shu, C. B., Berkeley, California 94720, USA Abstract. Staging laser plasma accelerators is an efficient way of mitigating laser pump depletion in laser driven accelerators and necessary for reaching high energies

Geddes, Cameron Guy Robinson

39

Novel and Optimized Materials Phases for High Energy Density...  

Broader source: Energy.gov (indexed) [DOE]

Novel and Optimized Materials Phases for High Energy Density Batteries Novel and Optimized Materials Phases for High Energy Density Batteries 2013 DOE Hydrogen and Fuel Cells...

40

Nuclear Energy Density Optimization: UNEDF2  

E-Print Network [OSTI]

The parameters of the UNEDF2 nuclear energy density functional (EDF) model were obtained in an optimization to experimental data consisting of nuclear binding energies, proton radii, odd-even mass staggering data, fission-isomer excitation energies, and single particle energies. In addition to parameter optimization, sensitivity analysis was done to obtain parameter uncertainties and correlations. The resulting UNEDF2 is an all-around EDF. However, the sensitivity analysis also demonstrated that the limits of current Skyrme-like EDFs have been reached and that novel approaches are called for.

Kortelainen, M; Nazarewicz, W; Olsen, E; Reinhard, P -G; Sarich, J; Schunck, N; Wild, S M; Davesne, D; Erler, J; Pastore, A

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Nuclear Energy Density Optimization: UNEDF2  

E-Print Network [OSTI]

The parameters of the UNEDF2 nuclear energy density functional (EDF) model were obtained in an optimization to experimental data consisting of nuclear binding energies, proton radii, odd-even mass staggering data, fission-isomer excitation energies, and single particle energies. In addition to parameter optimization, sensitivity analysis was done to obtain parameter uncertainties and correlations. The resulting UNEDF2 is an all-around EDF. However, the sensitivity analysis also demonstrated that the limits of current Skyrme-like EDFs have been reached and that novel approaches are called for.

M. Kortelainen; J. McDonnell; W. Nazarewicz; E. Olsen; P. -G. Reinhard; J. Sarich; N. Schunck; S. M. Wild; D. Davesne; J. Erler; A. Pastore

2014-10-30T23:59:59.000Z

42

Stored energy in pulsed dye laser ampifiers  

SciTech Connect (OSTI)

A new, more complete geometrical description of amplified spontaneous emission is included in the usual numerical models for dye laser amplifiers. A strong discrepancy with previous models is found for the low input signal regime and when evaluating the stored energy. The model was thoroughly tested experimentally.

Hnilo, A.A.; Martinez, O.E.; Quel, E.J.

1986-01-01T23:59:59.000Z

43

Laser Inertial Fusion Energy Control Systems  

SciTech Connect (OSTI)

A Laser Inertial Fusion Energy (LIFE) facility point design is being developed at LLNL to support an Inertial Confinement Fusion (ICF) based energy concept. This will build upon the technical foundation of the National Ignition Facility (NIF), the world's largest and most energetic laser system. NIF is designed to compress fusion targets to conditions required for thermonuclear burn. The LIFE control systems will have an architecture partitioned by sub-systems and distributed among over 1000's of front-end processors, embedded controllers and supervisory servers. LIFE's automated control subsystems will require interoperation between different languages and target architectures. Much of the control system will be embedded into the subsystem with well defined interface and performance requirements to the supervisory control layer. An automation framework will be used to orchestrate and automate start-up and shut-down as well as steady state operation. The LIFE control system will be a high parallel segmented architecture. For example, the laser system consists of 384 identical laser beamlines in a 'box'. The control system will mirror this architectural replication for each beamline with straightforward high-level interface for control and status monitoring. Key technical challenges will be discussed such as the injected target tracking and laser pointing feedback. This talk discusses the the plan for controls and information systems to support LIFE.

Marshall, C; Carey, R; Demaret, R; Edwards, O; Lagin, L; Van Arsdall, P

2011-03-18T23:59:59.000Z

44

Enhancing Compiler Techniques for Memory Energy Optimizations  

E-Print Network [OSTI]

in the total energy consumption equation. 1 Introduction As the market for embedded systems continues to growEnhancing Compiler Techniques for Memory Energy Optimizations Joseph Zambreno1 , Mahmut Taylan Evanston IL 60208, USA {zambro1,choudhar}@ece.northwestern.edu 2 Microsystems Design Lab Pennsylvania State

Kuzmanovic, Aleksandar

45

Modeling and optimization of HVAC energy consumption  

Science Journals Connector (OSTI)

A data-driven approach for minimization of the energy to air condition a typical office-type facility is presented. Eight data-mining algorithms are applied to model the nonlinear relationship among energy consumption, control settings (supply air temperature and supply air static pressure), and a set of uncontrollable parameters. The multiple-linear perceptron (MLP) ensemble outperforms other models tested in this research, and therefore it is selected to model a chiller, a pump, a fan, and a reheat device. These four models are integrated into an energy optimization model with two decision variables, the setpoint of the supply air temperature and the static pressure in the air handling unit. The model is solved with a particle swarm optimization algorithm. The optimization results have demonstrated the total energy consumed by the heating, ventilation, and air-conditioning system is reduced by over 7%.

Andrew Kusiak; Mingyang Li; Fan Tang

2010-01-01T23:59:59.000Z

46

Optimization Online - Survivable Energy Markets  

E-Print Network [OSTI]

Mar 9, 2006 ... Abstract: In this paper we present a centralized model for managing, at the same time, the dayahead energy market and the reserve market in ...

Gabriella Muratore

2006-03-09T23:59:59.000Z

47

Definition: Optimized Generator Operation | Open Energy Information  

Open Energy Info (EERE)

Optimized Generator Operation Optimized Generator Operation Jump to: navigation, search Dictionary.png Optimized Generator Operation Better forecasting and monitoring of load and grid performance would enable grid operators to dispatch a more efficient mix of generation that could be optimized to reduce cost. The coordinated operation of energy storage, distributed generation, or plug-in electric vehicle assets could also result in completely avoiding central generation dispatch.[1] Related Terms sustainability References ↑ SmartGrid.gov 'Description of Benefits' An LikeLike UnlikeLike You like this.Sign Up to see what your friends like. inline Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Optimized_Generator_Operation&oldid=502509" Categories:

48

Sustainable energy roadmap for Austin : how Austin Energy can optimize its energy efficiency.  

E-Print Network [OSTI]

??This report asks how Austin Energy can optimally operate residential energy efficiency and demand side management programs including demand response measures. Efficient energy use is… (more)

Johnston, Andrew Hayden, 1979-

2011-01-01T23:59:59.000Z

49

Energy mix optimization from an energy security perspective  

Science Journals Connector (OSTI)

Abstract In this article, an integrated methodology is presented to assess an optimal mix and perspective development of energy generation technologies not only by technical, economic or other criteria, but also from an energy security perspective. The energy security is evaluated in terms of energy system resistance to disturbances. The methodology comprises several models, such as a stochastic model of energy systems disturbance parameters, economic-optimization model of energy systems functioning, metric and analysis techniques of energy security. The perspective development and functioning of the energy systems with stochastic disturbances is modelled using economic-optimization model with the development of different energy generation technologies. An open source energy modelling system is used as a tool for this model. The concept of energy security coefficient, which is calculated to assess energy security in terms of energy price increase and the amounts of unsupplied energy due to the disturbance consequences, is presented in the article as well. The developed methodology is applied to the case study of the reference energy system. Its various development scenarios with different energy generation technologies are analysed according to the share of technologies in the energy production. Scenarios are simulated in the stochastic environment of various disturbances and results are obtained in terms of variation of energy security coefficient over time by comparing scenarios from the energy security point of view. Finally, the results of the development scenarios are discussed, threshold shares in the energy production and optimal mix of energy generation technologies in terms of energy security are proposed, limitations of the case study are identified and some general conclusions are given.

Juozas Augutis; Linas Martišauskas; Ri?ardas Krikštolaitis

2015-01-01T23:59:59.000Z

50

Converting solar energy into laser radiation using a fullerene-oxygen-iodine laser with solar pumping  

Science Journals Connector (OSTI)

The concept of a system for directly converting solar energy into laser radiation on the basis of a fullerene-oxygen-iodine laser has been developed. It is shown that this system has...

Mak, A A; Belousova, I M; Kiselev, V M; Grenishin, A S; Danilov, O B; Sosnov, E N

2009-01-01T23:59:59.000Z

51

Optimizing New Dark Energy Experiments  

SciTech Connect (OSTI)

Next generation “Stage IV” dark energy experiments under design during this grant, and now under construction, will enable the determination of the properties of dark energy and dark matter to unprecedented precision using multiple complementary probes. The most pressing challenge in these experiments is the characterization and understanding of the systematic errors present within any given experimental configuration and the resulting impact on the accuracy of our constraints on dark energy physics. The DETF and the P5 panel in their reports recommended “Expanded support for ancillary measurements required for the long-term program and for projects that will improve our understanding and reduction of the dominant systematic measurement errors.” Looking forward to the next generation Stage IV experiments we have developed a program to address the most important potential systematic errors within these experiments. Using data from current facilities it has been feasible and timely to undertake a detailed investigation of the systematic errors. In this DOE grant we studied of the source and impact of the dominant systematic effects in dark energy measurements, and developed new analysis tools and techniques to minimize their impact. Progress under this grant is briefly reviewed in this technical report. This work was a necessary precursor to the coming generations of wide-deep probes of the nature of dark energy and dark matter. The research has already had an impact on improving the efficiencies of all Stage III and IV dark energy experiments.

Tyson, J. Anthony [University of California, Davis

2013-08-26T23:59:59.000Z

52

Renewable Energy Planning: Multiparametric Cost Optimization; Preprint  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Department of Energy Office of Energy Efficiency & Renewable Energy National Renewable Energy Laboratory Innovation for Our Energy Future Renewable Energy Planning: Multiparametric Cost Optimization Preprint Andy Walker National Renewable Energy Laboratory Presented at SOLAR 2008 - American Solar Energy Society (ASES) San Diego, California May 3-8, 2008 Conference Paper NREL/CP-670-42921 May 2008 NREL is operated by Midwest Research Institute ● Battelle Contract No. DE-AC36-99-GO10337 NOTICE The submitted manuscript has been offered by an employee of the Midwest Research Institute (MRI), a contractor of the US Government under Contract No. DE-AC36-99GO10337. Accordingly, the US Government and MRI retain a nonexclusive royalty-free license to publish or reproduce the published form of

53

Laser spectroscopy of primary energy conversion in  

Science Journals Connector (OSTI)

A review is given of the current status of research on primary processes of energy conversion in photosynthesis. The structural and functional organization of photosynthetic apparatus of higher plants is considered. A description is given of laser probing methods, applications of high-speed optical shutters, and picosecond spectrofluorometry involving the use of image converters. A functional scheme of primary energy conversion by Rhodopseudomonas sphaeroides bacteria is given for the 10?12–10?4 sec range of time intervals. Some nonlinear processes resulting from intense excitation of the pigment apparatus of photosynthesizing organisms are considered.

V Z Pashchenko; L B Rubin

1978-01-01T23:59:59.000Z

54

Nonlinear laser energy depletion in laser-plasma accelerators  

E-Print Network [OSTI]

Lee- mans, in Advanced Accelerator Concepts, Eleventh Work-in laser-plasma accelerators ? B. A. Shadwick, 1, ‡ C. B.ac- celerators. Laser-plasma accelerators, for example, have

Shadwick, B.A.

2009-01-01T23:59:59.000Z

55

Combined Thermal and Power Energy Management Optimization  

E-Print Network [OSTI]

, 'various types of prime movers (e.g. boilers, waste heat recovery, steam and gas turbines, etc.), and varying requirements for process heat and electrical power, particularly if bulk power is being dispatched to a utility grid. The ability...) maintaining the operating security of the energy supply system and equipment, and 3) optimization of energy use to meet given loads and constraints at the lowest costs. The thermal dispatch of power system boilers and turbines is the key function which...

Ahner, D. J.; Priestley, R. R.

56

Optimal Demand Response with Energy Storage Management  

E-Print Network [OSTI]

In this paper, we consider the problem of optimal demand response and energy storage management for a power consuming entity. The entity's objective is to find an optimal control policy for deciding how much load to consume, how much power to purchase from/sell to the power grid, and how to use the finite capacity energy storage device and renewable energy, to minimize his average cost, being the disutility due to load- shedding and cost for purchasing power. Due to the coupling effect of the finite size energy storage, such problems are challenging and are typically tackled using dynamic programming, which is often complex in computation and requires substantial statistical information of the system dynamics. We instead develop a low-complexity algorithm called Demand Response with Energy Storage Management (DR-ESM). DR-ESM does not require any statistical knowledge of the system dynamics, including the renewable energy and the power prices. It only requires the entity to solve a small convex optimization pr...

Huang, Longbo; Ramchandran, Kannan

2012-01-01T23:59:59.000Z

57

Energy Harvesting By Optimized Piezo Transduction Mechanism  

E-Print Network [OSTI]

We report generation of electrical energy from nonlinear mechanical noises available in the ambient environment using optimized piezo transduction mechanisms. Obtaining energy from an ambient vibration has been attractive for remotely installed standalone microsystems and devices. The mechanical noises in the ambient environment can be converted to electrical energy by a piezo strip based on the principle of piezoelectric effect. In this work, we have designed and developed a standalone energy harvesting module based on piezo transduction mechanisms. Using this designed module we harvested noise energy and stored electrical energy in a capacitor. Using NI-PXI workstation with a LabVIEW programming, the output voltage of the piezo strip and voltage of the capacitor were measured and monitored. In this paper we discuss about the design, development, implementation, performance and characteristics of the energy harvesting module.

Boban, Bijo; Satheesh, U; Devaprakasam, D

2014-01-01T23:59:59.000Z

58

Optimization of Two-photon Excited Fluorescence Enhancement between Tunable and Broadband Femtosecond Laser Pulse Excitations  

E-Print Network [OSTI]

This project explores optimization of two-photon excited fluorescence (TPEF) enhancement between tunable narrowband and un-tuned broadband femtosecond (fs) laser pulse excitations for two-photon microscopy (TPM). The research is conducted...

Wang, Chao

2012-02-14T23:59:59.000Z

59

Effects of Laser Energy and Wavelength on the Analysis of LiFePO4...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Laser Energy and Wavelength on the Analysis of LiFePO4 Using Laser Assisted Atom Probe Tomography. Effects of Laser Energy and Wavelength on the Analysis of LiFePO4 Using Laser...

60

Energy balance in laser-irradiated vaporizing droplets  

Science Journals Connector (OSTI)

The interactions of vaporizing aerosols with a high energy laser beam are analyzed in the diffusive vaporization regime. This is the regime in which diffusive mass transport and...

Zardecki, Andrew; Armstrong, Robert L

1988-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Laser Micro-Processing Application on Green Energy Cell Microstructures  

Science Journals Connector (OSTI)

Three typical applications of laser micro-processing on microstructures for green energy cells have been introduced in this paper to improve the photoelectric conversion efficiency or...

Duan, Jun; Yang, Huan; Zhang, Chun-tian

62

Future scientific applications for high-energy lasers  

SciTech Connect (OSTI)

This report discusses future applications for high-energy lasers in the areas of astrophysics and space physics; hydrodynamics; material properties; plasma physics; radiation sources; and radiative properties.

Lee, R.W. [comp.

1994-08-01T23:59:59.000Z

63

Cognitive Energy Value Chain: Leveraging Big Data to Optimize Energy  

E-Print Network [OSTI]

20-23, 2014 - 8 -CEO Cognitive Energy Optimization Confidential Transforming The ‘Enterprise’ Cognitive Business Automation – Holistic Business Engine – Integrating the Enterprise – Business & Global Markets – Process Manufacturing Operations Big... FinancialMarket Big Data AnalyticsUniversal Engine providing Full Alignment IoT Web & Cloud Risk Mitigation ESL-IE-14-05-44 Proceedings of the Thrity-Sixth Industrial Energy Technology Conference New Orleans, LA. May 20-23, 2014 - 9 -CEO Cognitive Energy...

Birg, G.; Reitmeier, T.

2014-01-01T23:59:59.000Z

64

Optimization of Nd: YAG Laser Marking of Alumina Ceramic Using RSM And ANN  

SciTech Connect (OSTI)

The present research papers deals with the artificial neural network (ANN) and the response surface methodology (RSM) based mathematical modeling and also an optimization analysis on marking characteristics on alumina ceramic. The experiments have been planned and carried out based on Design of Experiment (DOE). It also analyses the influence of the major laser marking process parameters and the optimal combination of laser marking process parametric setting has been obtained. The output of the RSM optimal data is validated through experimentation and ANN predictive model. A good agreement is observed between the results based on ANN predictive model and actual experimental observations.

Peter, Josephine; Doloi, B.; Bhattacharyya, B. [Production Engineering Department, Jadavpur University, Kolkata (India)

2011-01-17T23:59:59.000Z

65

Modeling and optimization of single-pass laser amplifiers for high-repetition-rate laser pulses  

SciTech Connect (OSTI)

We propose a model for a continuously pumped single-pass amplifier for continuous and pulsed laser beams. The model takes into account Gaussian shape and focusing geometry of pump and seed beam. As the full-wave simulation is complex we have developed a largely simplified numerical method that can be applied to rotationally symmetric geometries. With the tapered-shell model we treat (focused) propagation and amplification of an initially Gaussian beam in a gain crystal. The implementation can be done with a few lines of code that are given in this paper. With this code, a numerical parameter optimization is straightforward and example results are shown. We compare the results of our simple model with those of a full-wave simulation and show that they agree well. A comparison of model and experimental data also shows good agreement. We investigate in detail different regimes of amplification, namely the unsaturated, the fully saturated, and the intermediate regime. Because the amplification process is affected by spatially varying saturation and exhibits a nonlinear response against pump and seed power, no analytical expression for the expected output is available. For modeling of the amplification we employ a four-level system and show that if the fluorescence lifetime of the gain medium is larger than the inverse repetition rate of the seed beam, continuous-wave amplification can be employed to describe the amplification process of ultrashort pulse trains. We limit ourselves to this regime, which implies that if titanium:sapphire is chosen as gain medium the laser repetition rate has to be larger than a few megahertz. We show detailed simulation results for titanium:sapphire for a large parameter set.

Ozawa, Akira; Udem, Thomas; Zeitner, Uwe D.; Haensch, Theodor W.; Hommelhoff, Peter [Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching (Germany); Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching (Germany); Fraunhofer-Institut fuer Angewandte Optik und Feinmechanik IOF, Albert-Einstein-Strasse 7, D-07745 Jena (Germany); Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching (Germany); Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching (Germany)

2010-09-15T23:59:59.000Z

66

Department of Energy Announces Completion of World's Largest Laser |  

Broader source: Energy.gov (indexed) [DOE]

Department of Energy Announces Completion of World's Largest Laser Department of Energy Announces Completion of World's Largest Laser Department of Energy Announces Completion of World's Largest Laser March 31, 2009 - 12:00am Addthis WASHINGTON, DC - The Department of Energy today announced that the National Nuclear Security Administration (NNSA) has certified the completion of the historic effort to build the world's largest laser. Housed at the Department of Energy's Lawrence Livermore National Laboratory, the National Ignition Facility (NIF) is expected to allow scientists to achieve fusion ignition in the laboratory, obtaining more energy from the target than is provided by the laser. The completion of NIF opens the door to scientific advancement and discovery that promises to enhance our national security, could help break America's dependence on foreign oil, and will lead to new

67

High-efficiency, dielectric multilayer gratings optimized for manufacturability and laser damage threshold  

SciTech Connect (OSTI)

Ultrashort pulse, high-intensity lasers offer new opportunities for the study of light-matter interaction and for inertial confinement fusion. A 100 Terawatt laser operating 400 fs and 1.053 {mu}m is operational at LLNL, and a 1000 Terawatt (Petawatt) laser will come online in early 1996. These lasers use large-aperture (40 cm and 94 cm diameter, respectively) diffraction gratings to compress the amplified laser pulse. At present, hologrphically produced, gold overcoated photoresist gratings are used: these gratings represent the fuse in the laser chain. Higher laser damage thresholds and higher diffraction efficiencies are theoretically possible with multilayer dielectric gratings (MDG`s). A number of design parameters regarding both the multilayer stack and the etched grating structure can be optimized to maximize the laser damage threshold and also improve the processing latitude for the interference lithography and reactive ion etching steps used during manufacture of these gratings. This paper presents model predictions for the behavior of hafnia/silica MDG`s both during processing and in operation, and presents experimental data on the diffraction efficiency and short- pulse laser damage threshold for optimized witness gratings.

Britten, J.A.; Perry, M.D.; Shore, B.W.; Boyd, R.D.; Loomis, G.E.; Chow, R.

1995-11-29T23:59:59.000Z

68

Nuclear energy density optimization: Shell structure  

E-Print Network [OSTI]

Nuclear density functional theory is the only microscopical theory that can be applied throughout the entire nuclear landscape. Its key ingredient is the energy density functional. In this work, we propose a new parameterization UNEDF2 of the Skyrme energy density functional. The functional optimization is carried out using the POUNDerS optimization algorithm within the framework of the Skyrme Hartree-Fock-Bogoliubov theory. Compared to the previous parameterization UNEDF1, restrictions on the tensor term of the energy density have been lifted, yielding a very general form of the energy density functional up to second order in derivatives of the one-body density matrix. In order to impose constraints on all the parameters of the functional, selected data on single-particle splittings in spherical doubly-magic nuclei have been included into the experimental dataset. The agreement with both bulk and spectroscopic nuclear properties achieved by the resulting UNEDF2 parameterization is comparable with UNEDF1. While there is a small improvement on single-particle spectra and binding energies of closed shell nuclei, the reproduction of fission barriers and fission isomer excitation energies has degraded. As compared to previous UNEDF parameterizations, the parameter confidence interval for UNEDF2 is narrower. In particular, our results overlap well with those obtained in previous systematic studies of the spin-orbit and tensor terms. UNEDF2 can be viewed as an all-around Skyrme EDF that performs reasonably well for both global nuclear properties and shell structure. However, after adding new data aiming to better constrain the nuclear functional, its quality has improved only marginally. These results suggest that the standard Skyrme energy density has reached its limits and significant changes to the form of the functional are needed.

M. Kortelainen; J. McDonnell; W. Nazarewicz; E. Olsen; P. -G. Reinhard; J. Sarich; N. Schunck; S. M. Wild; D. Davesne; J. Erler; A. Pastore

2013-12-06T23:59:59.000Z

69

Traveling-wave laser-produced-plasma energy source for photoionization laser pumping and lasers incorporating said  

DOE Patents [OSTI]

A traveling-wave, laser-produced-plasma, energy source used to obtain single-pass gain saturation of a photoionization pumped laser. A cylindrical lens is used to focus a pump laser beam to a long line on a target. Grooves are cut in the target to present a surface near normal to the incident beam and to reduce the area, and hence increase the intensity and efficiency, of plasma formation.

Sher, Mark H. (Los Altos, CA); Macklin, John J. (Stanford, CA); Harris, Stephen E. (Palo Alto, CA)

1989-09-26T23:59:59.000Z

70

Design of ultrahigh energy laser amplifier system with high storage energy extraction  

Science Journals Connector (OSTI)

A design concept of realizing high storage energy extraction efficiency is presented for an ultrahigh energy laser system, stressing the advantage of variable-diameter aperture...

Gong, Mali; Sui, Zhan; Liu, Qiang; Fu, Xing

2013-01-01T23:59:59.000Z

71

Laser-Accelerated Protons with Energy-Dependent Beam Direction  

Science Journals Connector (OSTI)

The spatial distribution of protons, accelerated by intense femtosecond laser pulses interacting with thin target foils under oblique irradiation are investigated. Under certain conditions, the proton beams are directed away from the target normal. This deviation is towards the laser forward direction, with an angle that increases with the level and duration of the amplified spontaneous emission pedestal before the main laser pulse. In addition, for a given laser pulse, this beam deviation increases with proton energy. The observations are discussed in terms of different electron acceleration mechanisms and target normal sheath acceleration, in combination with a laser-controllable shock wave locally deforming the target rear surface.

F. Lindau; O. Lundh; A. Persson; P. McKenna; K. Osvay; D. Batani; C.-G. Wahlström

2005-10-19T23:59:59.000Z

72

Optimization of extreme ultraviolet photons emission and collection in mass-limited laser produced plasmas for lithography application  

SciTech Connect (OSTI)

The progress in development of commercial system for next generation EUV lithography requires, among other factors, significant improvement in EUV photon sources such as discharge produced plasma (DPP) and laser produced plasma (LPP) devices. There are still many uncertainties in determining the optimum device since there are many parameters for the suitable and efficient energy source and target configuration and size. Complex devices with trigger lasers in DPP or with pre-pulsing in LPP provide wide area for optimization in regards to conversion efficiency (CE) and components lifetime. We considered in our analysis a promising LPP source configuration using 10-30 {mu}m tin droplet targets, and predicted conditions for the most efficient EUV radiation output and collection as well as calculating photons source location and size. We optimized several parameters of dual-beam lasers and their relationship to target size. We used our HEIGHTS comprehensive and integrated full 3D simulation package to study and optimize LPP processes with various target sizes to maximize the CE of the system.

Sizyuk, T.; Hassanein, A. [Center for Materials under Extreme Environment, School of Nuclear Engineering, Purdue University, West Lafayette, Indiana 47907 (United States)

2012-08-01T23:59:59.000Z

73

High Average Power, High Energy Short Pulse Fiber Laser System  

SciTech Connect (OSTI)

Recently continuous wave fiber laser systems with output powers in excess of 500W with good beam quality have been demonstrated [1]. High energy, ultrafast, chirped pulsed fiber laser systems have achieved record output energies of 1mJ [2]. However, these high-energy systems have not been scaled beyond a few watts of average output power. Fiber laser systems are attractive for many applications because they offer the promise of high efficiency, compact, robust systems that are turn key. Applications such as cutting, drilling and materials processing, front end systems for high energy pulsed lasers (such as petawatts) and laser based sources of high spatial coherence, high flux x-rays all require high energy short pulses and two of the three of these applications also require high average power. The challenge in creating a high energy chirped pulse fiber laser system is to find a way to scale the output energy while avoiding nonlinear effects and maintaining good beam quality in the amplifier fiber. To this end, our 3-year LDRD program sought to demonstrate a high energy, high average power fiber laser system. This work included exploring designs of large mode area optical fiber amplifiers for high energy systems as well as understanding the issues associated chirped pulse amplification in optical fiber amplifier systems.

Messerly, M J

2007-11-13T23:59:59.000Z

74

High-Energy Laser Diagnostics (HELD) for the Measurement of Diesel...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Energy Laser Diagnostics (HELD) for the Measurement of Diesel Particulate Matter High-Energy Laser Diagnostics (HELD) for the Measurement of Diesel Particulate Matter 2004 Diesel...

75

Actes JFPC 2012 Optimal Allocation of Renewable Energy Parks  

E-Print Network [OSTI]

Actes JFPC 2012 Optimal Allocation of Renewable Energy Parks: A Two-stage Optimization Model-economical study of renewable energy on the other hand, investigates gradual implantation of Renewable Energy (RE of energy demand, available resources, anticipated renewable engineering cost re- ductions [13]. However

Paris-Sud XI, Université de

76

A Smart Energy System: Distributed Resource Management, Control and Optimization  

E-Print Network [OSTI]

A Smart Energy System: Distributed Resource Management, Control and Optimization Yong Ding, Student of distributed energy resource and consumption management, which proposes to design a networked and embedded platform for realizing a dynamic energy mix and optimizing the energy consumption dy- namically. Based

Beigl, Michael

77

World's Largest Laser Sets New Records | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

World's Largest Laser Sets New Records World's Largest Laser Sets New Records World's Largest Laser Sets New Records November 10, 2010 - 6:26pm Addthis Ginny Simmons Ginny Simmons Former Managing Editor for Energy.gov, Office of Public Affairs What are the key facts? The National Ignition Facility in California fired a shot of 300 trillion neutrons -- one step closer to the amount of neutrons needed to reach fusion ignition. Scientists also used the laser to create a temperature of six million degrees Fahernheit. The world's largest laser, located at the National Ignition Facility (or NIF) in California, set new records on October 31 and November 2. Specifically, on October 31 the NIF laser fired a shot of 300 trillion neutrons, the most neutrons ever yielded by a laser to date, and one step closer to the amount of neutrons (about 10 to the 18th power) needed to

78

Transverse pulse shaping and optimization of a tapered hard X-ray free electron laser  

E-Print Network [OSTI]

Multidimensional optimization schemes for TW hard X-Ray free electron lasers are applied to the cases of transversely uniform and parabolic electron beam distributions and compared to examples of transversely Gaussian beams. The optimizations are performed for a $200$m undulator and a resonant wavelength of $\\lambda_r=1.5\\AA $ using the fully 3-dimensional FEL particle code GENESIS. Time dependent simulations showed that the maximum radiation power is larger for flatter transverse distributions due to enhanced optical guiding in the tapered section of the undulator. For a transversely Gaussian beam the maximum output power was found to be $\\text{P}_{max}$=$1.56$ TW compared to $2.26$ TW for the parabolic case and $2.63$ TW for the uniform case. Spectral data also showed a 30-70$\\%$ reduction in energy deposited in the sidebands for the uniform and parabolic beams compared with a Gaussian. An analysis of the maximum power as a function of detuning from resonance shows that redshifting the central wavelength by...

Emma, Claudio; Wu, Juhao

2014-01-01T23:59:59.000Z

79

MeV-Energy X Rays from Inverse Compton Scattering with Laser-Wakefield Accelerated Electrons  

Science Journals Connector (OSTI)

We report the generation of MeV x rays using an undulator and accelerator that are both driven by the same 100-terawatt laser system. The laser pulse driving the accelerator and the scattering laser pulse are independently optimized to generate a high energy electron beam (>200??MeV) and maximize the output x-ray brightness. The total x-ray photon number was measured to be ?1×107, the source size was 5???m, and the beam divergence angle was ?10??mrad. The x-ray photon energy, peaked at 1 MeV (reaching up to 4 MeV), exceeds the thresholds of fundamental nuclear processes (e.g., pair production and photodisintegration).

S. Chen; N. D. Powers; I. Ghebregziabher; C. M. Maharjan; C. Liu; G. Golovin; S. Banerjee; J. Zhang; N. Cunningham; A. Moorti; S. Clarke; S. Pozzi; D. P. Umstadter

2013-04-10T23:59:59.000Z

80

Lasers, Electron Beams and New Years Resolutions | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Lasers, Electron Beams and New Years Resolutions Lasers, Electron Beams and New Years Resolutions Lasers, Electron Beams and New Years Resolutions March 2, 2011 - 3:43pm Addthis Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What are the key facts? The electron beam that powers Jefferson Lab's Free-Electron Laser pumped out a record power input of 500 kilvolts using an innovative energy-recovery system that amplifies energy with far less power. A sufficiently powerful laser could make an effective defensive weapon, as well as accurate detection and tracking. The few folks still keeping their New Year's resolutions to work out might be the first to appreciate the recent record-breaking lift by the Energy Department's Jefferson Lab. Take a steel dumbbell. Hoist it up - lift with your legs! - onto a stand. Then add another ...and another

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Optimizing the FLASH code: preparing for Mira BG/Q and improving the laser  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Optimizing FLASH Optimizing FLASH Optimizing the FLASH code: preparing for Mira BG/Q and improving the laser ray trace April 30, 2013 6km25100off0650 CS Seminar: Optimizing the FLASH code: preparing for Mira BG/Q and improving the laser ray trace Christopher Daley The Flash Center for Computational Science, University of Chicago Tuesday, April 30, 2013 10:00-11:00 PDT Oakland Scientific Facility Room 238 FLASH is a multi-physics, component-based scientific code which has been used on the largest HPC platforms over the last decade. It has been cumulatively used by over a thousand researchers to investigate problems in astrophysics, cosmology, and in some areas of basic physics, such as turbulence. The core capabilities in FLASH include Adaptive Mesh Refinement (AMR) and solvers for hydrodynamics and magneto-hydrodynamics. There are

82

Energy Resonances between Molecular Species in CO2 Gas Lasers  

Science Journals Connector (OSTI)

... to a, number of other close energy resonances which exist, between laser levels of CO2, and the diatomic and triatomic; species expected to be present in various discharges in ... the diatomic and triatomic; species expected to be present in various discharges in. which CO2 laser action has been achieved. ...

R. W. NICHOLLS

1970-04-25T23:59:59.000Z

83

Application Level Optimizations for Energy Efficiency and Thermal Stability  

E-Print Network [OSTI]

, a method optimizing energy efficiency by clustering the work- load in a few resources, temporally can help achieve higher energy efficiency and better thermal behavior. 2. METHODS A fundamentalApplication Level Optimizations for Energy Efficiency and Thermal Stability Md. Ashfaquzzaman Khan

Coskun, Ayse

84

Optimization of Energy and Water Consumption in Cornbased Ethanol Plants  

E-Print Network [OSTI]

1 Optimization of Energy and Water Consumption in Corn­based Ethanol Plants Elvis Ahmetovi). First, we review the major alternatives in the optimization of energy consumption and its impact for the water streams. We show that minimizing energy consumption leads to process water networks with minimum

Grossmann, Ignacio E.

85

Finite-Horizon Optimal Transmission Policies for Energy Harvesting Sensors  

E-Print Network [OSTI]

Finite-Horizon Optimal Transmission Policies for Energy Harvesting Sensors Rahul Vaze School: krishnaj@ee.iitm.ac.in Abstract--In this paper, we derive optimal transmission poli- cies for energy harvesting sensors to maximize the utility obtained over a finite horizon. First, we consider a single energy

Jagannathan, Krishna

86

Laser and Intelligent Energy Field Manufacturing  

Science Journals Connector (OSTI)

Laser has demonstrated many important applications, including machining, welding, surface treating, additive manufacturing etc. Multiple hybrid processes had been developed, including...

Zhang, Wenwu

87

Optimizing New Dark Energy Experiments - Final Scientific Report  

SciTech Connect (OSTI)

This is the final scientific report for the University of Pittsburgh portion of the collaborative grant, 'Optimizing New Dark Energy Experiments'

Jeffrey A. Newman

2012-06-08T23:59:59.000Z

88

Optimal Energy Management of a PHEV Using Trip Information  

Broader source: Energy.gov (indexed) [DOE]

NAVTEQ (Map data) Argonne's Transportation Research and Analysis Computing Center (TRACC) (traffic modeling) 2 2012 DOE VT Merit Review - VSS068 - Optimal Energy...

89

Energy Department Selects Global Laser Enrichment for Future Operations at  

Broader source: Energy.gov (indexed) [DOE]

Energy Department Selects Global Laser Enrichment for Future Energy Department Selects Global Laser Enrichment for Future Operations at Paducah Site Energy Department Selects Global Laser Enrichment for Future Operations at Paducah Site November 27, 2013 - 12:00pm Addthis Workers inspect cylinders containing depleted uranium hexafluoride. Workers inspect cylinders containing depleted uranium hexafluoride. Media Contact (202) 586-4940 Washington, D.C. - The U.S. Department of Energy announced today that it will open negotiations with Global Laser Enrichment (GLE) for the sale of the depleted uranium hexafluoride inventory. The Department determined that GLE offered the greatest benefit to the government among those who responded to a Request for Offers (RFO) released earlier this year. Through the RFO review process, the Department also decided to enter into

90

Laser fusion experiment yields record energy at NIF | National Nuclear  

National Nuclear Security Administration (NNSA)

Laser fusion experiment yields record energy at NIF | National Nuclear Laser fusion experiment yields record energy at NIF | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Laser fusion experiment yields record energy at NIF Laser fusion experiment yields record energy at NIF Posted By Office of Public Affairs Lawrence Livermore's National Ignition Facility (NIF) recently focused all

91

Laser fusion experiment yields record energy at NIF | National Nuclear  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Laser fusion experiment yields record energy at NIF | National Nuclear Laser fusion experiment yields record energy at NIF | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Laser fusion experiment yields record energy at NIF Laser fusion experiment yields record energy at NIF Posted By Office of Public Affairs Lawrence Livermore's National Ignition Facility (NIF) recently focused all

92

Biotrans: Cost Optimization Model | Open Energy Information  

Open Energy Info (EERE)

Biotrans: Cost Optimization Model Biotrans: Cost Optimization Model Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Biotrans: Cost Optimization Model Focus Area: Ethanol Topics: Market Analysis Website: www.ecn.nl/units/ps/models-and-tools/biotrans/ Equivalent URI: cleanenergysolutions.org/content/biotrans-cost-optimization-model,http Language: English Policies: Deployment Programs DeploymentPrograms: Demonstration & Implementation BIOTRANS optimizes the biofuel supply chain allocation by finding the least-cost configuration of resources and trade to meet a specified biofuel demand in the European transportation sector. The user can constrain the optimization by inputting a number of economic and technological assumptions for a specific target year. References Retrieved from

93

Optimal Green Energy Utilization in MIMO Systems with Hybrid Energy Supplies  

E-Print Network [OSTI]

1 Optimal Green Energy Utilization in MIMO Systems with Hybrid Energy Supplies Congshi Hu, Jie Gong, it is feasible for BSs to be powered by green energy, such as solar energy and wind energy. For instance link with hybrid energy harvesting and grid power supply. We optimize the power allocation to minimize

94

Optimal mixing and optimal stirring for fixed energy, fixed power or fixed palenstrophy flows  

E-Print Network [OSTI]

Optimal mixing and optimal stirring for fixed energy, fixed power or fixed palenstrophy flows-time perfect mixing with a finite energy constraint on the stirring flow. On the other hand, using techniques, University of Michigan, Ann Arbor, MI 48109 (Dated: 31 March 2012) We consider passive scalar mixing

Novikov, Alexei

95

Power Control and Optimization of Photovoltaic and Wind Energy Conversion Systems /  

E-Print Network [OSTI]

and Optimization of Photovoltaic and Wind Energy Conversionand Optimization of Photovoltaic and Wind Energy Conversionpower of Photovoltaic modules and Wind Energy Conversion

Ghaffari, Azad

2013-01-01T23:59:59.000Z

96

Midaz Lasers Ltd | Open Energy Information  

Open Energy Info (EERE)

Midaz Lasers Ltd Midaz Lasers Ltd Jump to: navigation, search Name Midaz Lasers Ltd Place London, United Kingdom Zip SW7 2AZ Sector Solar Product Startup developing diode-pumped solid state (DPSS) lasers with potential applications to solar cell manufacture. Coordinates 51.506325°, -0.127144° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":51.506325,"lon":-0.127144,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

97

Laser Light Engines | Open Energy Information  

Open Energy Info (EERE)

Laser Light Engines Laser Light Engines Jump to: navigation, search Name Laser Light Engines Place Salem, New Hampshire Zip NH 03079 Sector Efficiency Product Salem-based, designs, develops and manufactures ultra-high brightness, digitally controlled laser-driven light sources. The firm contributes to green building efficiency. Coordinates 42.554485°, -88.110549° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.554485,"lon":-88.110549,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

98

Optimization of extreme ultraviolet photons emission and collection in mass-limited laser produced plasmas for lithography application  

E-Print Network [OSTI]

Optimization of extreme ultraviolet photons emission and collection in mass-limited laser produced in DPP or with pre-pulsing in LPP provide wide area for optimization in regards to conversion efficiency and collection as well as calculating photons source location and size. We optimized several parameters of dual

Harilal, S. S.

99

High energy femtosecond fiber laser at 1018 nm and high power Cherenkov radiation generation  

E-Print Network [OSTI]

Two novel laser systems for ultrafast applications have been designed and built. For the seeding of a high energy cryogenically cooled Yb:YLF laser, a novel 1018 nm fiber laser system is demonstrated. It produces >35 nJ ...

Yang, Hongyu, S.M. Massachusetts Institute of Technology

2014-01-01T23:59:59.000Z

100

Optimal Control of Residential Energy Storage Under Price Fluctuations  

E-Print Network [OSTI]

Optimal Control of Residential Energy Storage Under Price Fluctuations Peter van de ven Department habits. We formulate the problem of minimizing the cost of energy storage purchases subject to both user- gramming, energy storage, threshold policy. I. INTRODUCTION Wholesale energy prices exhibit significant

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

MULTIPARAMETER OPTIMIZATION STUDIES ON GEOTHERMAL ENERGY CYCLES  

E-Print Network [OSTI]

of Practical Cycles for Geothermal Power Plants." GeneralDesign and Optimize Geothermal Power Cycles." Presented atof Practical Cycles for Geothermal Power Plants." General

Pope, W.L.

2011-01-01T23:59:59.000Z

102

Optimize Parallel Pumping Systems | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Pumping Systems This tip sheet describes how to optimize the performance of multiple pumps operating continuously as part of a parallel pumping system. PUMPING SYSTEMS TIP SHEET...

103

Timely Delivery of Laser Inertial Fusion Energy Presentation prepared for  

E-Print Network [OSTI]

plant design · Delivery soon enough to make a difference to global energy imperatives. · Design basedTimely Delivery of Laser Inertial Fusion Energy Presentation prepared for Town Hall meeting must directly address the end-user requirement for commercial power 3 Plant Primary Criteria (partial

104

GaInAs/AlInAs quantum cascade laser design based on optimized second harmonic generation  

Science Journals Connector (OSTI)

In this work, we present an innovative procedure for the design and optimization of GaInAs/AlInAs quantum cascade laser (QCL) structures based on the use of the genetic algorithm. The purpose of the algorithm is to determine the set of design parameters that would enable the maximization of the second order nonlinear susceptibility, thus facilitating significant optical nonlinearities to take place. In our optimization model, we start from the existing design in which the active region consists of two coupled InGaAs quantum wells separated by an AlInAs barrier, and the active region levels form double resonant nonlinear cascades. Upon obtaining the optimized structure and evaluating its energies and wave functions, the output characteristics are calculated by applying the full self-consistent rate equation modeling of the electron transport in a periodic QCL structure. The results of the calculations predict a noticeable improvement of targeted properties of the optimized design, while at the same time the original design calculations show excellent agreement with experimental results. The described procedure is applicable to various active region designs and can be used for other wavelength ranges.

A Gaji?; J Radovanovi?; V Milanovi?; D Indjin; Z Ikoni?

2014-01-01T23:59:59.000Z

105

MULTIPARAMETER OPTIMIZATION STUDIES ON GEOTHERMAL ENERGY CYCLES  

E-Print Network [OSTI]

and J. W. Tester, Geothermal Energy as a Source of Electricat the Susanville Geothermal Energy Converence, July 1976.for Recovery of Energy from Geothermal Hot Brine Deposits."

Pope, W.L.

2011-01-01T23:59:59.000Z

106

MULTIPARAMETER OPTIMIZATION STUDIES ON GEOTHERMAL ENERGY CYCLES  

E-Print Network [OSTI]

Division of Geothermal Energy (ERDA-DGE) to do energy costEnergy Cost Resource Utilization Efficiency-Resource Temp- erature Surface for GeothermalEnergy Cost Resource Utilization Efficiency-Resource Temp- erature Surface for Geothermal

Pope, W.L.

2011-01-01T23:59:59.000Z

107

Investigation into economical desalination using optimized hybrid renewable energy system  

Science Journals Connector (OSTI)

This paper investigates the use of hybrid renewable energy systems (HRESs) in Reverse Osmosis (RO) desalination. Mathematical model aided with a newly developed computer program for sizing (HRES) components. The study evaluates the individual and total expenses needed as well as the amount of excess renewable energy production. An optimization program was developed to select the best (HRES) combination that can produce desalinated water in a relatively economic cost. It demonstrates an investigated optimization approach based on minimization of the excess energy. It presents the impact of the considered optimization technique on the unit cost of energy and consequently unit cost of desalinated water. Unit production costs of both energy and desalinated water for two existing small and medium (RO) plants powered with conventional electricity grid are compared with the generated electricity from optimized (HRES). Cost sensitivity evaluation for (HRES) components to estimate the most economical price of (HRES) for desalination is presented.

A. Hossam-Eldin; A.M. El-Nashar; A. Ismaiel

2012-01-01T23:59:59.000Z

108

Interface module for transverse energy input to dye laser modules  

DOE Patents [OSTI]

An interface module (10) for transverse energy input to dye laser modules is provided particularly for the purpose of delivering enhancing transverse energy beams (36) in the form of illumination bar (54) to the lasing zone (18) of a dye laser device, in particular to a dye laser amplifier (12). The preferred interface module (10) includes an optical fiber array (30) having a plurality of optical fibers (38) arrayed in a co-planar fashion with their distal ends (44) receiving coherent laser energy from an enhancing laser source (46), and their proximal ends (4) delivered into a relay structure (3). The proximal ends (42) of the optical fibers (38) are arrayed so as to be coplanar and to be aimed generally at a common point. The transverse energy beam array (36) delivered from the optical fiber array (30) is acted upon by an optical element array (34) to produce an illumination bar (54) which has a cross section in the form of a elongated rectangle at the position of the lasing window (18). The illumination bar (54) is selected to have substantially uniform intensity throughout.

English, Jr., Ronald E. (Tracy, CA); Johnson, Steve A. (Tracy, CA)

1994-01-01T23:59:59.000Z

109

Evaluation of weld porosity in laser beam seam welds: optimizing continuous wave and square wave modulated processes.  

SciTech Connect (OSTI)

Nd:YAG laser joining is a high energy density (HED) process that can produce high-speed, low-heat input welds with a high depth-to-width aspect ratio. This is optimized by formation of a ''keyhole'' in the weld pool resulting from high vapor pressures associated with laser interaction with the metallic substrate. It is generally accepted that pores form in HED welds due to the instability and frequent collapse of the keyhole. In order to maintain an open keyhole, weld pool forces must be balanced such that vapor pressure and weld pool inertia forces are in equilibrium. Travel speed and laser beam power largely control the way these forces are balanced, as well as welding mode (Continuous Wave or Square Wave) and shielding gas type. A study into the phenomenon of weld pool porosity in 304L stainless steel was conducted to better understand and predict how welding parameters impact the weld pool dynamics that lead to pore formation. This work is intended to aid in development and verification of a finite element computer model of weld pool fluid flow dynamics being developed in parallel efforts and assist in weld development activities for the W76 and future RRW programs.

Ellison, Chad M. (Honeywell FM& T, Kansas City, MO); Perricone, Matthew; Faraone, Kevin M. (Honeywell FM& T, Kansas City, MO); Roach, Robert Allen; Norris, Jerome T.

2007-02-01T23:59:59.000Z

110

Laser-Energy Transfer and Enhancement of Plasma Waves and Electron Beams by Interfering High-Intensity Laser Pulses  

E-Print Network [OSTI]

Laser-Energy Transfer and Enhancement of Plasma Waves and Electron Beams by Interfering High-Intensity) The effects of interference due to crossed laser beams were studied experimentally in the high- intensity regime. Two ultrashort (400 fs), high-intensity (4 1017 and 1:6 1018 W=cm2) and 1 m wavelength laser

Umstadter, Donald

111

Optimizing rotational acceleration curves for minimum energy use in electric  

E-Print Network [OSTI]

Optimizing rotational acceleration curves for minimum energy use in electric motors. 12/15/06 Fall the optimal efficiency of a motor for any input values of motor constants, distance, or time. In every of the inspiration to find which rotational acceleration curve for the used motors would be most efficient. We really

Ruina, Andy L.

112

ENERGY PAYBACK OPTIMIZATION OF THERMOELECTRIC POWER GENERATOR SYSTEMS  

E-Print Network [OSTI]

and the thermoelectric module should be performed. Active cooling and the design of the heat sink are customized to findENERGY PAYBACK OPTIMIZATION OF THERMOELECTRIC POWER GENERATOR SYSTEMS Kazuaki Yazawa Dept model for optimizing thermoelectric power generation system is developed and utilized for parametric

113

Minimizing Energy Consumption in Body Sensor Networks via Convex Optimization  

E-Print Network [OSTI]

Minimizing Energy Consumption in Body Sensor Networks via Convex Optimization Sidharth Nabar energy consumption while limiting the latency in data transfer. In this paper, we focus on polling energy consumption and latency. We show that this problem can be posed as a geometric program, which

Poovendran, Radha

114

Optimizing Throughput and Energy in Online Deadline Scheduling  

E-Print Network [OSTI]

of all jobs. An optimal schedule is expected to maximize the throughput, and furthermore, its energy a scheduling algorithm, one has to face the dilemma of selecting more jobs and being conservative in energy jobs; O(1)-competitive online algorithms with respect to energy usage have been known [Yao et al. 1995

Wong, Prudence W.H.

115

Optimizing Communication Energy Consumption in Perpetual Wireless Nanosensor Networks  

E-Print Network [OSTI]

Optimizing Communication Energy Consumption in Perpetual Wireless Nanosensor Networks Shahram}@cs.odu.edu Abstract--This paper investigates the effect of various param- eters of energy consumption. Finding the optimum combination of parameters to minimize energy consumption while satisfying the Qo

Weigle, Michele

116

CROSS-LAYER OPTIMIZATION IN ENERGY CONSTRAINED NETWORKS  

E-Print Network [OSTI]

solved. The solution tells us how to optimally route the traffic to minimize the total energy consumption battery. Under this hard constraint, reducing energy consumption is the most important design-range applications, bursty transmissions are preferred to minimize total energy consumption. We then consider

Cui, Shuguang "Robert"

117

Circuit Area Optimization in Energy Temporal Sparse Scenarios for  

E-Print Network [OSTI]

Circuit Area Optimization in Energy Temporal Sparse Scenarios for Multiple Harvester Powered.alarcon@upc.edu Abstract--Multi-source energy harvesters are gaining interest as a robust alternative to power wireless sensors, since the sensor node can maintain its operation regardless of the fact that one of its energy

Politècnica de Catalunya, Universitat

118

REopt: A Platform for Energy System Integration and Optimization: Preprint  

SciTech Connect (OSTI)

REopt is NREL's energy planning platform offering concurrent, multi-technology integration and optimization capabilities to help clients meet their cost savings and energy performance goals. The REopt platform provides techno-economic decision-support analysis throughout the energy planning process, from agency-level screening and macro planning to project development to energy asset operation. REopt employs an integrated approach to optimizing a site?s energy costs by considering electricity and thermal consumption, resource availability, complex tariff structures including time-of-use, demand and sell-back rates, incentives, net-metering, and interconnection limits. Formulated as a mixed integer linear program, REopt recommends an optimally-sized mix of conventional and renewable energy, and energy storage technologies; estimates the net present value associated with implementing those technologies; and provides the cost-optimal dispatch strategy for operating them at maximum economic efficiency. The REopt platform can be customized to address a variety of energy optimization scenarios including policy, microgrid, and operational energy applications. This paper presents the REopt techno-economic model along with two examples of recently completed analysis projects.

Simpkins, T.; Cutler, D.; Anderson, K.; Olis, D.; Elgqvist, E.; Callahan, M.; Walker, A.

2014-08-01T23:59:59.000Z

119

Online Modeling in the Process Industry for Energy Optimization  

E-Print Network [OSTI]

"This paper discusses how steady state models are being used in the process industry to perform online energy optimization of steam and electrical systems. It presents process demands commonly found in the processing industry in terms of steam...

Alexander, J.

120

Energy Optimal Routing in Radio Networks Using Geometric Data Structures ?  

E-Print Network [OSTI]

batteries or power from solar panels, a prime optimization criterion is the energy consumption. We model and Emerging Technologies programme of the EU under contract number IST­1999­14186 (ALCOM­FT). #12; In addition

Schmitt, Peter H.

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

MULTIPARAMETER OPTIMIZATION STUDIES ON GEOTHERMAL ENERGY CYCLES  

E-Print Network [OSTI]

and J. W. Tester, Geothermal Energy as a Source of Electricat the Susanville Geothermal Energy Converence, July 1976.and J. W. Tester, Geothermal Energy as a Source of Electric

Pope, W.L.

2011-01-01T23:59:59.000Z

122

Realistic Industrial Scale Energy Optimization: Part I - Organizing and Executing Energy Conservation Projects  

E-Print Network [OSTI]

With increased cost and reduced availability of energy, plant managers are reviewing their options to optimize energy utilization to reduce operating costs. This paper deals with the organization and execution of an energy conservation program which...

Jones, W. T.

1982-01-01T23:59:59.000Z

123

Building Distributed Energy Performance Optimization for China - a Regional  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Distributed Energy Performance Optimization for China - a Regional Distributed Energy Performance Optimization for China - a Regional Analysis of Building Energy Costs and CO2 Emissions Title Building Distributed Energy Performance Optimization for China - a Regional Analysis of Building Energy Costs and CO2 Emissions Publication Type Conference Proceedings Refereed Designation Refereed LBNL Report Number LBNL-81770 Year of Publication 2012 Authors Feng, Wei, Nan Zhou, Chris Marnay, Michael Stadler, and Judy Lai Conference Name 2012 ACEEE Summer Study on Energy Efficiency in Buildings, August 12-17, 2012 Date Published 08/2012 Conference Location Pacific Grove, California ISBN Number 0-918249-XX-X Notes LBNL - XXXXX Refereed Designation Refereed Attachment Size PDF 5 MB Google Scholar BibTex RIS RTF XML Alternate URL: http://eetd.lbl.gov/node/52998

124

High energy heavy ion jets emerging from laser plasma generated by long pulse laser beams from  

E-Print Network [OSTI]

, Albuquerque, New Mexico. ~Received 21 February 2005; Accepted 20 April 2005! Abstract High energy heavy ions to the fast ion emission process. The interest in laser plasmas and interaction phenomena of heavy ion beams!. Thus there is a tradition to investigate accelerator related issues like beam transport phenomena

125

High energy mode locked fiber oscillators for high contrast, high energy petawatt laser seed sources  

SciTech Connect (OSTI)

In a high-energy petawatt laser beam line the ASE pulse contrast is directly related to the total laser gain. Thus a more energetic input pulse will result in increased pulse contrast at the target. We have developed a mode-locked fiber laser with high quality pulses and energies exceeding 25nJ. We believe this 25nJ result is scalable to higher energies. This oscillator has no intra-cavity dispersion compensation, which yields an extremely simple, and elegant laser configuration. We will discuss the design of this laser, our most recent results and characterization of all the key parameters relevant to it use as a seed laser. Our oscillator is a ring cavity mode-locked fiber laser [1]. These lasers operate in a self-similar pulse propagation regime characterized by a spectrum that is almost square. This mode was found theoretically [2] to occur only in the positive dispersion regime. Further increasing positive dispersion should lead to increasing pulse energy [2]. We established that the positive dispersion required for high-energy operation was approximately that of 2m of fiber. To this end, we constructed a laser cavity similar to [1], but with no gratings and only 2m of fiber, which we cladding pumped in order to ensure sufficient pump power was available to achieve mode-locked operation. A schematic of the laser is shown in figure 1 below. This laser produced low noise 25nJ pulses with a broad self similar spectrum (figure 2) and pulses that could be de-chirped to <100fs (figure 3). Pulse contrast is important in peta-watt laser systems. A major contributor to pulse contrast is amplified spontaneous emission (ASE), which is proportional to the gain in the laser chain. As the oscillator strength is increased, the required gain to reach 1PW pulses is decreased, reducing ASE and improving pulse contrast. We believe these lasers can be scaled in a stable fashion to pulse energies as high as 100nJ and have in fact seen 60nJ briefly in our lab, which is work still in progress. At this level, even if the pulses are not perfect, post-oscillator pulse cleaning can be used to create a clean high energy pulse for injection into a peta-watt laser beam line.

Dawson, J W; Messerly, M J; An, J; Kim, D; Barty, C J

2006-06-15T23:59:59.000Z

126

High-Energy, Pulsed-Laser Diagnostics for Real-Time Measurements...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Energy, Pulsed-Laser Diagnostics for Real-Time Measurements of Reciprocating Engine PM Emissions High-Energy, Pulsed-Laser Diagnostics for Real-Time Measurements of Reciprocating...

127

Method of Reducing the Error of Transferring the Size of a Unit of Laser Radiation Energy  

Science Journals Connector (OSTI)

A method is considered of reducing the error of transferring the size of a unit of laser radiation energy for a secondary standard of the units of average power and energy of laser radiation by using the readi...

A. N. Shchipunov

2002-10-01T23:59:59.000Z

128

Optimizing Laser-accelerated Ion Beams for a Collimated Neutron Source  

SciTech Connect (OSTI)

High-flux neutrons for imaging and materials analysis applications have typically been provided by accelerator- and reactor-based neutron sources. A novel approach is to use ultraintense (>1018W/cm2) lasers to generate picosecond, collimated neutrons from a dual target configuration. In this article, the production capabilities of present and upcoming laser facilities are estimated while independently maximizing neutron yields and minimizing beam divergence. A Monte-Carlo code calculates angular and energy distributions of neutrons generated by D-D fusion events occurring within a deuterated target for a given incident beam of D+ ions. Tailoring of the incident distribution via laser parameters and microlens focusing modifies the emerging neutrons. Projected neutron yields and distributions are compared to conventional sources, yielding comparable on-target fluxes per discharge, shorter time resolution, larger neutron energies and greater collimation.

C.L. Ellison and J. Fuchs

2010-09-23T23:59:59.000Z

129

Plant Optimization Technologies | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Science & Innovation » Clean Coal » Crosscutting Research » Science & Innovation » Clean Coal » Crosscutting Research » Plant Optimization Technologies Plant Optimization Technologies The Plant Optimization Technologies Program is a diverse, scientifically oriented research and development program that addresses issues affecting the way coal is used. The program's primary emphasis is to support the development of advanced technologies that use coal with near-zero emissions. To provide this support, the program identifies scientific and technological needs and develops a basic understanding of the underlying chemical and physical processes that, unless resolved, could create a technological barrier to these new coal-based concepts. The program serves as a bridge between basic science and the fabrication and testing of new technologies. Currently researchers supported by this

130

Definition: Customer Electricity Use Optimization | Open Energy Information  

Open Energy Info (EERE)

Customer Electricity Use Optimization Customer Electricity Use Optimization Jump to: navigation, search Dictionary.png Customer Electricity Use Optimization Customer electricity use optimization is possible if customers are provided with information to make educated decisions about their electricity use. Customers could be able to optimize toward multiple goals such as cost, reliability, convenience, and environmental impact.[1] Also Known As Energy conservation Related Terms electricity generation References ↑ SmartGrid.gov 'Description of Functions' An LikeLike UnlikeLike You like this.Sign Up to see what your friends like. inline Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Customer_Electricity_Use_Optimization&oldid=480282" Categories: Definitions

131

1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. HIGH-ACCURACY LASER POWER AND ENERGY METER CALIBRATION SYSTEM . . . . . . . . 2  

E-Print Network [OSTI]

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. HIGH-ACCURACY LASER POWER AND ENERGY METER CALIBRATION SYSTEM . . . . . . . . 2 2.1 Calibration

132

NIST Measurement Services: cw Laser Power and Energy  

E-Print Network [OSTI]

NIST Measurement Services: cw Laser Power and Energy Calibrations at NIST NIST Special Publication technical operating units and their principal activities are listed below. For more information visit and Measures Advanced Technology Program ·Economic Assessment ·Information Technology and Applications

133

Optimal Siting and Sizing of Distributed Energy Resources  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Optimal Siting and Sizing of Distributed Energy Resources Optimal Siting and Sizing of Distributed Energy Resources Speaker(s): Johan Driesen Date: February 15, 2007 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Chris Marnay Ongoing changes in the operation of distribution grids call for a new way to plan grid modifications. This presentation gives an overview of possible methods of long-term planning for the deployment of Distributed Energy Resources (distributed generation, storage and controllable loads) in a given grid. The placement and sizing of the units have to be considered, making this a complex optimization problem with discrete and continuous variables. In the optimization problem, multiple objectives are often conflicting, e.g. minimal grid losses, maximal use of the resources and voltage stability. An evolutionary algorithm (genetic algorithms) is used

134

Stochastic Optimization in Energy ISO New England  

E-Print Network [OSTI]

: » "Stochastic" » Online/offline optimization » Policy » Lags » Transition function » Lookahead model/policy," but in the setting of sequential problems, each is actually a class of policy (or two) Slide 4 #12;© 2010 Warren B of technology and the price of commodities. In recent years, the growing presence of wind and solar is putting

Powell, Warren B.

135

Cooperative and Non-Cooperative house energy optimization in a Smart Grid perspective  

Science Journals Connector (OSTI)

Energy demand management for residential users is a promising research area within the Smart Grid revolution. The whole energy generation and distribution system performance can indeed be improved by optimizing the house energy management while still ... Keywords: energy consumption, noncooperative house energy optimization, smart grid perspective, energy demand management, energy generation, distribution system performance, optimal planning

A. Barbato; A. Capone; G. Carello; M. Delfanti; M. Merlo; A. Zaminga

2011-06-01T23:59:59.000Z

136

Conserve Energy by Optimizing Air Compressor System  

E-Print Network [OSTI]

, the plant would have to substantially increase the product shipments. This is not always possible; however, conserving energy is nearly always possible. How should one begin an energy conservation program within a major Industrial Plant? The same as any...

Williams, V. A.

137

Thermodynamic Optimization in Ocean Thermal Energy Conversion  

Science Journals Connector (OSTI)

As alternative energy sources to oil and uranium, we can consider well known alternative sources such as solar power, geothermal power and wind power. However when we consider the 21st century energy sources, ocean

Y. Ikegami; H. Uehara

1999-01-01T23:59:59.000Z

138

High-Powered Lasers for Clean Energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

extremely high temperatures and pressures. The controlled release of fusion, or thermonuclear energy, in the laboratory remains an alluring goal due to its potential as a...

139

Continuous optical discharge in a thermionic converter for conversion of laser radiation energy into electrical energy  

Science Journals Connector (OSTI)

A model is developed and calculations are made of the characteristics of a continuous optical discharge in the interelectrode gap of a thermionic converter for conversion of laser radiation energy into electrical

I. V. Alekseeva; A. P. Budnik; V. A. Zherebtsov…

1999-04-01T23:59:59.000Z

140

Parametric Study and Multi-Criteria Optimization in Laser Cladding by a High Power Direct Diode Laser  

Science Journals Connector (OSTI)

In laser cladding, the performance of the deposited layers subjected ... layer are influenced greatly by the type of laser used as a heat source and process ... Nowadays, the quality of fabricated coating by laser

Parisa Farahmand; Radovan Kovacevic

2014-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Optimal investment and scheduling of distributed energy resources with  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

investment and scheduling of distributed energy resources with investment and scheduling of distributed energy resources with uncertainty in electric vehicles driving schedules Title Optimal investment and scheduling of distributed energy resources with uncertainty in electric vehicles driving schedules Publication Type Journal Article LBNL Report Number LBNL-6471E Year of Publication 2013 Authors Cardoso, Gonçalo, Michael Stadler, Mohammad Bozchalui, Ratnesh Sharma, Chris Marnay, Ana Barbosa-Póvoa, and Paulo Ferrão Journal Energy Date Published 10/2013 Abstract The large scale penetration of electric vehicles (EVs) will introduce technical challenges to the distribution grid, but also carries the potential for vehicle-to-grid services. Namely, if available in large enough numbers, EVs can be used as a distributed energy resource (DER) and their presence can influence optimal DER investment and scheduling decisions in microgrids. In this work, a novel EV fleet aggregator model is introduced in a stochastic formulation of DER-CAM [1], an optimization tool used to address DER investment and scheduling problems. This is used to assess the impact of EV interconnections on optimal DER solutions considering uncertainty in EV driving schedules. Optimization results indicate that EVs can have a significant impact on DER investments, particularly if considering short payback periods. Furthermore, results suggest that uncertainty in driving schedules carries little significance to total energy costs, which is corroborated by results obtained using the stochastic formulation of the problem.

142

Robust Energy Cost Optimization of Water Distribution System with ...  

E-Print Network [OSTI]

Energy cost optimization of a water-supply network is a very important ..... ci(t) is the cost of pumping in a unit of water from source # i in period t (in ... of the pump, ? is an appropriate constant factor, and ?(t) is the price of energy (H is measured.

2011-02-21T23:59:59.000Z

143

Sensor Placement + Optimization Software (SPOT) | Open Energy Information  

Open Energy Info (EERE)

Sensor Placement + Optimization Software (SPOT) Sensor Placement + Optimization Software (SPOT) Jump to: navigation, search Tool Summary Name: SPOT Agency/Company /Organization: Architectural Energy Corporation Sector: Energy Focus Area: Buildings, Energy Efficiency Topics: Technology characterizations Resource Type: Software/modeling tools User Interface: Spreadsheet Website: www.archenergy.com/SPOT/ Cost: Free Language: English References: http://www.archenergy.com/SPOT/ SPOT(tm) is intended to assist a designer in quantifying the existing or intended electric lighting and annual daylighting characteristics of a given space and to help establish the optimal photosensor placement for the space relative to annual performance and annual energy savings. The software was developed with classroom daylighting in mind, but can be used

144

Laser Cladding of TiAl Intermetallic Alloy on Ti6Al4V -Process Optimization and Properties  

Science Journals Connector (OSTI)

Abstract In order to improve Ti6Al4V high-temperature resistance and its tribological properties, the deposition of TiAl intermetallic (Ti-48Al-2Cr-2Nb) coating on a Ti6Al4V substrate by coaxial laser cladding has been investigated. Laser cladding by powder injection is an emerging laser material processing technique that allows the deposition of thick protective coatings on substrates,using a high power laser beam as heat source. Laser cladding is a multiple-parameter-dependent process. The main process parameters involved (laser power, powder feeding rate, scanning speed and preheating temperature) has been optimized. The microstructure and geometrical quantities (clad area and dilution) of the coating was characterized by optical microscopy and scanning electron microscopy (SEM). In addition the cooling rate of the clad during the process was measured by a dual-color pyrometer. This result has been related to defectology and mechanical coating properties.

B. Cárcel; A. Serrano; J. Zambrano; V. Amigó; A.C. Cárcel

2014-01-01T23:59:59.000Z

145

Nuclear energy density optimization: Shell structure  

Science Journals Connector (OSTI)

Background: Nuclear density functional theory is the only microscopical theory that can be applied throughout the entire nuclear landscape. Its key ingredient is the energy density functional.

M. Kortelainen; J. McDonnell; W. Nazarewicz; E. Olsen; P.-G. Reinhard; J. Sarich; N. Schunck; S. M. Wild; D. Davesne; J. Erler; A. Pastore

2014-05-15T23:59:59.000Z

146

Building Energy Optimization (BEopt) Software | Department of...  

Broader source: Energy.gov (indexed) [DOE]

of BEopt-CA (Ex) that supports balanced integration of energy efficiency, demand response, and photovoltaics in the residential retrofit market. To help meet Building...

147

Laser-Material Interactions: A Study of Laser Energy Coupling with Solids  

E-Print Network [OSTI]

1971) Effects of High-Power Laser Radiation, Academic Presin Effects of High-Power Laser Radiation, (Academic Press,for modeling gas discharge lasers", Boulder, Colo. : Univ.

Shannon, M.A.

2009-01-01T23:59:59.000Z

148

HVAC Optimized Heat Exchangers Research Project | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Optimized Heat Exchangers Research Optimized Heat Exchangers Research Project HVAC Optimized Heat Exchangers Research Project The U.S. Department of Energy is currently conducting research into heating, ventilation, and air conditioning (HVAC) optimized heat exchangers. The information generated in this study will demonstrate performance improvements that can be achieved through optimization of refrigerant circuitry for non-uniform inlet air distribution. The tubing circuitry on fin-tube heat exchangers used in residential space-conditioning systems is typically designed assuming uniform airflow through the finned passageways. However, the air flow in installed systems is highly non-uniform, resulting in mismatched refrigerant-air heat transfer that reduces the capacity of the heat exchanger and efficiency of

149

Annual Energy Consumption Analysis and Energy Optimization of a Solar-Assisted Heating Swimming Pool  

E-Print Network [OSTI]

This paper is concerned with the energy efficiency calculations and optimization for an indoor solar-assisted heating swimming pool in GuangZhou. The heating energy requirements for maintaining the pool constant temperature were investigated, which...

Zuo, Z.; Hu, W.; Meng, O.

2006-01-01T23:59:59.000Z

150

Design and optimization of a flexible high-peak-power laser-to-fiber coupled illumination system used in digital particle image velocimetry  

SciTech Connect (OSTI)

We present a study on the design and parameter optimization of a flexible high-peak-power fiber-optic laser delivery system using commercially available solid-core silica fibers and an experimental glass hollow waveguide (HW). The fiber-optic delivery system provides a flexible, safe, and easily and precisely positioned laser irradiation for many applications including uniform illumination for digital particle image velocimetry (DPIV). The delivery fibers, when coupled through a line-generating lens, produce a uniform thin laser sheet illumination for accurate and repeatable DPIV two-dimensional velocity measurements. We report experimental results on homogenizing the laser beam profile using various mode-mixing techniques. Furthermore, because a fundamental problem for fiber-optic-based high-peak-power laser delivery systems is the possible damage effects of the fiber material, we determine experimentally the peak power density damage threshold of various delivery fibers designed for the visible spectral range at a typical DPIV laser wavelength of 532 nm. In the case of solid-core silica delivery fibers using conventional lens-based laser-to-fiber coupling, the damage threshold varies from 3.7 GW/cm{sup 2} for a 100-{mu}m-core-diameter high-temperature fiber to 3.9 GW/cm{sup 2} for a 200-{mu}m-core-diameter high-power delivery fiber, with a total output laser energy delivered of at least 3-10 mJ for those respective fibers. Therefore, these fibers are marginally suitable for most macro-DPIV applications. However, to improve the high-power delivery capability for close-up micro-DPIV applications, we propose and validate an experimental fiber link with much higher laser power delivery capability than the solid-core fiber links. We use an uncoated grazing-incidence-based tapered glass funnel coupled to a glass HW with hollow air-core diameter of 700 {mu}m, a low numerical aperture of 0.05, and a thin inside cladding of cyclic olefin polymer coating for optimum transmission at 532 nm. Because of the mode homogenizing effect and lower power density, the taper-waveguide laser delivery technique ensured high damage threshold for the delivery HW, and as a result, no damage occurred at the maximum measured input laser energy of 33 mJ used in this study.

Robinson, Ronald A.; Ilev, Ilko K. [FDA/CDRH, 9200 Corporate Blvd., HFZ-170, Rockville, Maryland 20850 (United States)

2004-11-01T23:59:59.000Z

151

Simulation Models to Optimize the Energy Consumption of Buildings  

E-Print Network [OSTI]

Page 1 of paper submitted to ICEBO 2008 Berlin SIMULATION MODELS TO OPTIMIZE THE ENERGY CONSUMPTION OF BUILDINGS Sebastian Burhenne Fraunhofer-Institute for Solar Energy Systems Freiburg, Germany Dirk Jacob Fraunhofer...-Institute for Solar Energy Systems Freiburg, Germany ABSTRACT In practice, building operation systems are only adjusted during commissioning. This is done manually and leads to failure-free but often inefficient operation. This work deals...

Burhenne, S.; Jacob, D.

152

Scalable Stochastic Optimization of Complex Energy Systems  

E-Print Network [OSTI]

Illinois power grid and real-time energy market. Strong scal- ing efficiency of 96% is obtained on 32 racks (131,072 cores) of the “Intrepid” Blue Gene/P system at ...

2011-04-18T23:59:59.000Z

153

Central Networks Low Carbon Hub Optimizing renewable energy resources in  

Open Energy Info (EERE)

Networks Low Carbon Hub Optimizing renewable energy resources in Networks Low Carbon Hub Optimizing renewable energy resources in Lincolnshire (Smart Grid Project) Jump to: navigation, search Project Name Central Networks Low Carbon Hub Optimizing renewable energy resources in Lincolnshire Country United Kingdom Headquarters Location Lincolnshire, United Kingdom Coordinates 53.21788°, -0.19997° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":53.21788,"lon":-0.19997,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

154

Topology optimization of piezoelectric energy harvesting devices considering static and harmonic dynamic loads  

Science Journals Connector (OSTI)

A topology optimization (TO) procedure is developed to design optimal layouts for piezoelectric energy harvesting devices (EHDs) by considering the effect of static and harmonic dynamic mechanical loads. To determine the optimal material distributions ... Keywords: Energy harvesting device, Harmonic load, Piezoelectric material with penalization, Static load, Structural optimization, Topology optimization

Jin Yee Noh; Gil Ho Yoon

2012-11-01T23:59:59.000Z

155

In the OSTI Collections: Free-Electron Lasers | OSTI, US Dept of Energy,  

Office of Scientific and Technical Information (OSTI)

Free-Electron Lasers Free-Electron Lasers Existing Free-Electron Lasers Using Free-Electron Lasers for Measurement and Defense New Free-Electron Laser Designs References Research Organizations Reports available from OSTI's Information Bridge While most types of laser produce coherent light from electric charges bound within atoms, molecules, or solids, unbound charges are the light source in free-electron lasers. Lasers of this type can operate at higher frequencies than are easily achieved with bound-electron lasers. Various uses and designs of free-electron lasers are the focus of different projects sponsored through the Department of Energy. Lasers, like any source of light or other electromagnetic waves, produce waves when some of the electric charges they contain go from having a

156

Laser fusion experiment yields record energy at Lawrence Livermore's  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

4 4 For immediate release: 08/26/2013 | NR-13-08-04 High Resolution Image All NIF experiments are controlled and orchestrated by the integrated computer control system in the facility's control room. It consists of 950 front-end processors attached to about 60,000 control points, including mirrors, lenses, motors, sensors, cameras, amplifiers, capacitors and diagnostic instruments. Laser fusion experiment yields record energy at Lawrence Livermore's National Ignition Facility Breanna Bishop, LLNL, (925) 423-9802, bishop33@llnl.gov High Resolution Image The preamplifiers of the National Ignition Facility are the first step in increasing the energy of laser beams as they make their way toward the target chamber. LIVERMORE, Calif. -- In the early morning hours of Aug.13, Lawrence

157

Improvement of energy-conversion efficiency from laser to proton beam in a laser-foil interaction  

Science Journals Connector (OSTI)

Improvement of energy-conversion efficiency from laser to proton beam is demonstrated by particle simulations in a laser-foil interaction. When an intense short-pulse laser illuminates the thin-foil target, the foil electrons are accelerated around the target by the ponderomotive force. The hot electrons generate a strong electric field, which accelerates the foil protons, and the proton beam is generated. In this paper a multihole thin-foil target is proposed in order to increase the energy-conversion efficiency from laser to protons. The multiholes transpiercing the foil target help to enhance the laser-proton energy-conversion efficiency significantly. Particle-in-cell 2.5-dimensional (x, y, vx, vy, vz) simulations present that the total laser-proton energy-conversion efficiency becomes 9.3% for the multihole target, though the energy-conversion efficiency is 1.5% for a plain thin-foil target. The maximum proton energy is 10.0MeV for the multihole target and is 3.14MeV for the plain target. The transpiercing multihole target serves as a new method to increase the energy-conversion efficiency from laser to ions.

Y. Nodera; S. Kawata; N. Onuma; J. Limpouch; O. Klimo; T. Kikuchi

2008-10-15T23:59:59.000Z

158

Energy transport in short-pulse-laser-heated targets measured using extreme ultraviolet laser backlighting  

Science Journals Connector (OSTI)

The accurate characterization of thermal electron transport and the determination of heating by suprathermal electrons in laser driven solid targets are both issues of great importance to the current experiments being performed at the National Ignition Facility, which aims to achieve thermonuclear fusion ignition using lasers. Ionization, induced by electronic heat conduction, can cause the opacity of a material to drop significantly once bound-free photoionization is no longer energetically possible. We show that this drop in opacity enables measurements of the transmission of extreme ultraviolet (EUV) laser pulses at 13.9 nm to act as a signature of the heating of thin (50 nm) iron layers with a 50-nm thick parylene-N (CH) overlay irradiated by 35-fs pulses at irradiance 3×1016 Wcm?2. Comparing EUV transmission measurements at different times after irradiation to fluid code simulations shows that the target is instantaneously heated by hot electrons (with approximately 10% of the laser energy), followed by thermal conduction with a flux limiter of ?0.05.

L. A. Wilson; G. J. Tallents; J. Pasley; D. S. Whittaker; S. J. Rose; O. Guilbaud; K. Cassou; S. Kazamias; S. Daboussi; M. Pittman; O. Delmas; J. Demailly; O. Neveu; D. Ros

2012-08-28T23:59:59.000Z

159

Effect of Beam Quality on the Scaling of High-Energy Flow Lasers  

Science Journals Connector (OSTI)

The maximum output power from high-energy flow lasers is primarily determined by the ... field intensity, however, depends on the beam quality that can be achieved with the laser ... of gas flow inhomogeneities o...

W. L. Bohn; Th. Hall

1987-01-01T23:59:59.000Z

160

OpenEI:Projects/Search Engine Optimization | Open Energy Information  

Open Energy Info (EERE)

Search Engine Optimization Search Engine Optimization Jump to: navigation, search This page is used to coordinate the OpenEI project's plans to apply Search Engine Optimization (SEO) techniques to boost the site's traffic and impact. Contents 1 Tasks 2 Targeted Keywords 3 Resources 4 Participants Tasks Optimize pages' TITLE and H1 elements Include keywords (like "energy" in TITLE and H1 elements whenever possible (and appropriate) Usually accomplished via the "DISPLAYTITLE" magic word Include appropriate DESCRIPTION and KEYWORDS meta tags in HTML Usually accomplished via Template:PageMeta Include specific and descriptive ALT attributes in our image tags Make the ALT attribute as specific as possible (e.g. "NREL Logo" is better than just "Logo") Among other things, this should lead to more traffic via Google

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Optimization of the design and mode of operation of a QD laser for reducing the heat-to-bitrate ratio  

SciTech Connect (OSTI)

Heat dissipation under the high-speed modulation of quantum dot edge-emitting lasers is considered. It is shown that, for a given laser diode, there is a bias current at which the heat-to-bitrate ratio is minimized. Moreover, there exists a certain optimal optical loss of the laser cavity at which the lowest heat-to-bitrate ratio is provided for any design of edge-emitting lasers that can be fabricated from an epitaxial structure. The heat-to-bitrate ratio and the corresponding bitrate are numerically calculated and analytical expressions are derived. It is demonstrated that the heat-to-bitrate ratio of quantum dot edge-emitting lasers can be less than 0.4 pJ/bit at a bitrate exceeding 10 Gbit/s.

Zhukov, A. E., E-mail: zhukale@gmail.com; Savelyev, A. V. [Russian Academy of Sciences, St. Petersburg Academic University-Nanotechnology Research and Education Center (Russian Federation)] [Russian Academy of Sciences, St. Petersburg Academic University-Nanotechnology Research and Education Center (Russian Federation); Maximov, M. V. [Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation)] [Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation); Kryzhanovskaya, N. V. [Russian Academy of Sciences, St. Petersburg Academic University-Nanotechnology Research and Education Center (Russian Federation)] [Russian Academy of Sciences, St. Petersburg Academic University-Nanotechnology Research and Education Center (Russian Federation); Gordeev, N. Yu.; Shernyakov, Yu. M. [Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation)] [Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation); Payusov, A. S.; Nadtochiy, A. M.; Zubov, F. I.; Korenev, V. V. [Russian Academy of Sciences, St. Petersburg Academic University-Nanotechnology Research and Education Center (Russian Federation)] [Russian Academy of Sciences, St. Petersburg Academic University-Nanotechnology Research and Education Center (Russian Federation)

2013-08-15T23:59:59.000Z

162

An Optimal Energy Allocation Algorithm for Energy Harvesting Wireless Sensor Networks  

E-Print Network [OSTI]

. Traditionally, a sensor node is mainly powered by a non-rechargeable battery, which has a limited energy storage by enabling the wireless sensor nodes to replenish energy from ambient sources, such as solar, windAn Optimal Energy Allocation Algorithm for Energy Harvesting Wireless Sensor Networks Shaobo Mao

Wong, Vincent

163

Energy Input per Unit Length – High Accuracy Kinematic Metrology in Laser Material Processing  

Science Journals Connector (OSTI)

Laser material processes require constant energy input per unit length. Besides focal z-position, spot size, laser power and other process parameters, the relative travel speed (feed rate) of the laser spot on the work piece has the highest influence on the resulting energy input per unit length. In this paper a new metrology method is introduced, which enables users in industry and research to measure the real travel speed of the laser spot and the resulting contour of the trajectory.

Christoph Franz; Peter Abels; Raphael Rolser; Michael Becker

2011-01-01T23:59:59.000Z

164

Power Control and Optimization of Photovoltaic and Wind Energy Conversion Systems /  

E-Print Network [OSTI]

77 5.2 Wind Energy Conversion System . . . . .Optimization and Control in Wind Energy Conversion SystemsAC matrix con- verter for wind energy conversion system,” in

Ghaffari, Azad

2013-01-01T23:59:59.000Z

165

Demonstration of Integrated Optimization Software at the Baldwin Energy Complex  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Clean Coal Power Clean Coal Power Initiative (CCPI) contacts Brad tomer Director Office of Major Demonstrations National Energy Technology Laboratory 3610 Collins Ferry Road P.O. Box 880 Morgantown, WV 26507-0880 304-285-4692 brad.tomer@netl.doe.gov George Pukanic Project Manager National Energy Technology Laboratory 626 Cochrans Mill Road P.O. Box 10940 Pittsburgh, PA 15236-0940 412-386-6085 george.pukanic@netl.doe.gov PaRtIcIPant NeuCo, Inc., Boston, MA aDDItIonaL tEaM MEMBERs Dynegy Midwest Generation (host) Demonstration of integrateD optimization software at the BalDwin energy Complex Project Description NeuCo, Inc., of Boston, Massachusetts, has designed and demonstrated new integrated on-line optimization systems at Dynegy Midwest Generation's Baldwin Energy

166

Optimization of Power-Intensive Energy Systems with Carbon Capture  

Science Journals Connector (OSTI)

Optimization of Power-Intensive Energy Systems with Carbon Capture ... Three concepts for capturing CO2 from natural gas-fired combined gas/steam turbine power plants are evaluated and compared in this paper: (A) sepn. of CO2 from exhaust gas coming from a std. ...

Xuesong Zheng; Jin-Kuk Kim

2011-09-07T23:59:59.000Z

167

Optimization of Energy Detector Receivers for UWB Systems  

E-Print Network [OSTI]

desired characteristics like the increased potential of achieving high data rates, low transmission powerOptimization of Energy Detector Receivers for UWB Systems Mustafa E. S¸ahin, Ismail G¨uvenc¸, and H¨useyin Arslan Electrical Engineering Department, University of South Florida 4202 E. Fowler Avenue, ENB-118

Arslan, Hüseyin

168

Towards Optimizing Energy Costs of Algorithms for Shared Memory Architectures  

E-Print Network [OSTI]

Towards Optimizing Energy Costs of Algorithms for Shared Memory Architectures Vijay Anand Korthikanti Department of Computer Science University of Illinois Urbana-Champaign vkortho2@illinois.edu Gul Agha Department of Computer Science University of Illinois Urbana-Champaign agha@illinois.edu ABSTRACT

Marchal, Loris

169

Method for optimizing output in ultrashort-pulse multipass laser amplifiers with selective use of a spectral filter  

DOE Patents [OSTI]

A method for optimizing multipass laser amplifier output utilizes a spectral filter in early passes but not in later passes. The pulses shift position slightly for each pass through the amplifier, and the filter is placed such that early passes intersect the filter while later passes bypass it. The filter position may be adjust offline in order to adjust the number of passes in each category. The filter may be optimized for use in a cryogenic amplifier.

Backus, Sterling J. (Erie, CO); Kapteyn, Henry C. (Boulder, CO)

2007-07-10T23:59:59.000Z

170

Multiobjective Optimization of Renewable Energy Penetration Rate in Power Systems  

Science Journals Connector (OSTI)

Abstract Nowadays, multi-source systems based on renewable energy technologies become the key to a sustainable energy supply infrastructure against the rising cost and the pollutant nature of fossil primary energy used in conventional power plant. However, the cost of renewable energy technologies and the reliability of a multi-sources generation system are generally conflicting with each other. This paper presents a multiobjective formulation to allow optimizing simultaneously both the annualized renewable energy cost the system reliability defined as the renewable energy - load disparity (RELD). This later takes into account the lack of energy as well as the exceed weighted by a penalty factor. The optimization is reach by acting on the penetration rate of each type of renewable generation technologies in order to satisfy a certain load curve. In order to solve this problem, this work suggests to use the fast and elitist multiobjective genetic algorithm: NSGA-II. A case study shows that the use of diversified resources allows to handle the RELD and to decrease the exceed renewable energy (RERE) and load energy notsupplied (LENS).

Hasnae Bilil; Ghassane Aniba; Mohamed Maaroufi

2014-01-01T23:59:59.000Z

171

Optimal energy management strategy for hybrid electric tracked vehicles  

Science Journals Connector (OSTI)

A Dynamic Programming (DP) technique is used to design an optimal power distribution energy management strategy between the diesel engine-generator and traction battery for a hybrid electric tracked vehicle. A mathematical model incorporating the vehicle's dynamics, driving schedule data from the field tests and powertrain is developed. A control strategy based on the passive power covering concept is initially designed. An optimal one is then designed through the DP approach and DP-based battery sizing is properly adopted. The performance of the new control strategy is tested through simulations. Significant fuel economy improvement is observed.

Yuan Zou; Feng-Chun Sun; Cheng-Ning Zhang; Jun-Qiu Li

2012-01-01T23:59:59.000Z

172

Energy cost and optimal entanglement production in harmonic chains  

Science Journals Connector (OSTI)

We investigate nonequilibrium entanglement generation in a chain of harmonic oscillators with time-dependent linear coupling. We use optimal control theory to determine the coupling modulation that leads to maximum logarithmic negativity for a pair of opposite oscillators, and show that it corresponds to a synchronization of the eigenmodes of the chain. We further analytically relate the maximum attainable entanglement to the irreversible work done to produce it. We find that the energy cost of optimal entanglement production scales exponentially with the amount of entanglement.

Fernando Galve and Eric Lutz

2009-03-23T23:59:59.000Z

173

Optimization Model for Energy Planning with CO2 Emission Considerations  

Science Journals Connector (OSTI)

This paper considers the problem of reducing CO2 emissions from a power grid consisting of a variety of power-generating plants:? coal, natural gas, nuclear, hydroelectric, and alternative energy. ... Approximately 28.5% of OPG electricity is produced through the combustion of fossil fuels, 27% through hydroelectricity, and 44% through nuclear energy, and the remaining 0.5% comes from renewable or other energy sources, such as wind turbines. ... A sensitivity analysis was also performed to evaluate the impact of natural gas prices, coal prices, and retrofit costs on the optimal configuration of the OPG fleet of electricity-generating stations. ...

Haslenda Hashim; Peter Douglas; Ali Elkamel; Eric Croiset

2005-01-12T23:59:59.000Z

174

Plasma-wall interaction studies with optimized laser-produced jets  

SciTech Connect (OSTI)

The production of the laser-produced plasma jets at burnt-through low-Z foils was optimized by using three-frame interferometry. When striking secondary targets, these jets of energetic particles represent an efficient tool for the investigation of transient phenomena at surfaces of the plasma-exposed solids. Two sets of precisely measured x-ray spectroscopic data demonstrate diagnostic potential of the collimated jets in the plasma-wall interaction studies: Blue Doppler shifts of the Al jet self-emission visualize ion deceleration in the near-wall region. Local depressions found in Al Ly{gamma} profiles emitted from Al/Si(PMMA) targets indicate charge exchange between the Al XIII and fully stripped C ions.

Renner, O.; Krousky, E.; Smid, M. [Institute of Physics ASCR, 18221 Prague (Czech Republic); Pisarczyk, T.; Chodukowski, T.; Kalinowska, Z. [Institute of Plasma Physics and Laser Microfusion, 01-497 Warsaw (Poland); Pisarczyk, P. [Warsaw University of Technology, ICS, 00-665 Warsaw (Poland); Ullschmied, J. [Institute of Plasma Physics ASCR, 18200 Prague 8 (Czech Republic); Dalimier, E. [Sorbonne Universites, Pierre et Marie Curie, UMR 7605, LULI, 75252 Paris (France)

2011-09-15T23:59:59.000Z

175

Numerical models analysis of energy conversion process in air-breathing laser propulsion  

SciTech Connect (OSTI)

Energy source was considered as a key essential in this paper to describe energy conversion process in air-breathing laser propulsion. Some secondary factors were ignored when three independent modules, ray transmission module, energy source term module and fluid dynamic module, were established by simultaneous laser radiation transportation equation and fluid mechanics equation. The incidence laser beam was simulated based on ray tracing method. The calculated results were in good agreement with those of theoretical analysis and experiments.

Hong Yanji; Song Junling; Cui Cunyan; Li Qian [Academy of Equipment Command and Technology, 101416 Beijing (China)

2011-11-10T23:59:59.000Z

176

Renormalized Energy and Asymptotic Expansion of Optimal Logarithmic Energy on the Sphere  

E-Print Network [OSTI]

satisfying some growth assumption and some properties detailed below. The discrete energy wn is linkedRenormalized Energy and Asymptotic Expansion of Optimal Logarithmic Energy on the Sphere Laurent B repelling points confined by an external field verifying the weak growth assumption of Hardy and Kuijlaars

Paris-Sud XI, Université de

177

CONSTRAINTS ON LASER-DRIVEN ACCELERATORS FOR A HIGH-ENERGY LINEAR COLLIDER*  

E-Print Network [OSTI]

CONSTRAINTS ON LASER-DRIVEN ACCELERATORS FOR A HIGH-ENERGY LINEAR COLLIDER* J.S. Wurtele and AV on 1 TeV) are applied to free-space laser and laser/plasma accelerators. It is shown that the requirements impose very severe constraints upon the new accelerators-- so severe, that it seems unlikely

Wurtele, Jonathan

178

Optimal control of end-user energy storage  

E-Print Network [OSTI]

An increasing number of retail energy markets exhibit price fluctuations and provide customers such as data centers and residential users the opportunity to buy energy at lower than average prices. Such cost savings however are hard to obtain in practice because they require users to observe the price fluctuations and shift their consumption to low price periods. We propose to use energy storage to allow users to satisfy demand at times when prices are high with energy previously bought during low-price periods. We investigate how to control the battery to minimize energy costs, subject to fluctuating prices and user demand. We formulate this problem as a Markov Decision Process and show that the optimal policy has a threshold structure. We then numerically compute the thresholds using real-world traces from existing energy markets. We show that energy storage using this policy leads to significant cost savings, and study the impact of the battery size on the optimal policy and the potential savings.

van de Ven, Peter M; Massoulie, Laurent; Salonidis, Theodoros

2012-01-01T23:59:59.000Z

179

Energy, cost and carbondioxide optimization in regional energy systems with periodic and stochastic demand fluctuations  

Science Journals Connector (OSTI)

The new linear, stochastic optimization model ECCO...has been developed as a computerized planning tool for case studies on integrated energy management involving heat recovery by heat exchanger ... each of which...

Helmuth-M. Groscurth; Reiner Kümmel

1992-01-01T23:59:59.000Z

180

Computational modeling of laser-plasma interactions: Pulse self-modulation and energy transfer between intersecting laser pulses  

Science Journals Connector (OSTI)

The nonlinear interaction of intense femtosecond laser pulses with a self-induced plasma channel in air and the energy transfer between two intersecting laser pulses were simulated using the finite-difference time-domain particle-in-cell method. Implementation of a simple numerical code enabled modeling of various phenomena, including pulse self-modulation in the spatiotemporal and spectral domains, conical emission, and energy transfer between two intersecting laser beams. The mechanism for energy transfer was found to be related to a plasma waveguide array induced by Moiré patterns of the interfering electric fields. The simulation results provide a persuasive replication and explanation of previous experimental results, when carried out under comparable physical conditions, and lead to prediction of others. This approach allows us to further examine the effect of the laser and plasma parameters on the simulation results and to investigate the underlying physics.

Rotem Kupfer; Boris Barmashenko; Ilana Bar

2013-07-17T23:59:59.000Z

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

DOE Science Showcase - Free-Electron Lasers | OSTI, US Dept of Energy,  

Office of Scientific and Technical Information (OSTI)

Free-Electron Lasers Free-Electron Lasers Free-Electron Lasers absorb and release energy at any wavelength and can be controlled more precisely than conventional lasers by producing intense powerful light in brief bursts with extreme precision. This innovative technology has opened doors to a vast array of possibilities for manufacturing and for basic research. Read more in the white paper In OSTI Collections: Free-Electron Lasers by Dr. William Watson, Physicist, OSTI staff. Free-Electron Lasers Results in DOE Databases Science.gov Ciencia.Science.gov (Español) WorldWideScience.org Energy Citations Database DOE Information Bridge Relevant Subject Clusters FREE ELECTRON LASERS PARTICLE ACCELERATORS ENGINEERING LASERS ELECTRON BEAMS ACCELERATORS WIGGLER MAGNETS EQUIPMENT ELECTROMAGNETIC RADIATION

182

Femtosecond-laser induced ablation of silicate glasses and the intrinsic dissociation energy  

Science Journals Connector (OSTI)

The relation between ablation threshold fluence upon femtosecond laser pulse irradiation and the average dissociation energy density of silicate based multicomponent glass is studied....

Grehn, Moritz; Seuthe, Thomas; Höfner, Michael; Griga, Nils; Theiss, Christoph; Mermillod-Blondin, Alexandre; Eberstein, Markus; Eichler, Hans; Bonse, Jörn

2014-01-01T23:59:59.000Z

183

Infrared and visible laser double resonance studies of vibrational energy transfer processes in polyatomic molecules  

SciTech Connect (OSTI)

We have purchased a new probe laser (Nitrogen laser pumped dye laser) from Laser Photonics for use in this project. The new laser is already installed and tested with several dyes. We have acquired two frequency doubling crystals, KDP and BBO and at this time we are conducting experiments to optimize their performance. The frequency doubling capability will extend the useful range of our dye laser in the ultra-violet region. We intend to use this capability at a later stage to study the reaction dynamics of free radicals generated by the CO{sub 2} laser pulse. We have synthesized s-tetrazine in our laboratory and although the yield was poor, we were successful in our attempt. The compound is unstable over a long period of time and due to the cost of chemicals involved, we have postponed further synthesis until all our equipment is ready for an experiment. 1 ref.

Bhatnagar, R.

1990-01-01T23:59:59.000Z

184

Optimal energy management of a micro-grid with renewable energy resources and demand response  

Science Journals Connector (OSTI)

With the introduction of smart energy grids and extensive penetration of renewable energy resources in distribution networks Micro-Grids (MGs) which are comprised of various alternative energy resources and Advanced Metering Infrastructure (AMI) systems for better implementation of DR programs are effectively employed. The design and development of Smart Energy Management Systems (SEMSs) for MGs are interesting and attractive research problems. In this paper a new SEMS architecture is presented to solve the multi-objective operation management and scheduling problem in a typical MG while considering different energy resource technologies Plug-in Hybrid Electric Vehicles (PHEVs) and DR programs. The energy management problem is formulated as a constrained mixed integer nonlinear multi-objective optimization problem in which the MG's total operating cost and net emissions must be minimized simultaneously. Three different optimization algorithms are used to solve the above mentioned problem and their outputs (Pareto optimal solutions) for the same problem are compared and analyzed.

M. Parvizimosaed; F. Farmani; A. Anvari-Moghaddam

2013-01-01T23:59:59.000Z

185

Energy Secretary Chu to Receive Arthur L. Schawlow Award at the Laser  

Broader source: Energy.gov (indexed) [DOE]

Energy Secretary Chu to Receive Arthur L. Schawlow Award at the Energy Secretary Chu to Receive Arthur L. Schawlow Award at the Laser Institute of America Annual Meeting Energy Secretary Chu to Receive Arthur L. Schawlow Award at the Laser Institute of America Annual Meeting September 28, 2010 - 12:00am Addthis Washington D.C. --- U.S. Energy Secretary Steven Chu will receive the Arthur L. Schawlow Award at the Laser Institute of America Annual Meeting tomorrow in Anaheim, CA, in recognition of his contributions to applications of lasers in science. Chu, who won the 1997 Nobel Prize in physics for his work using lasers to cool and trap atoms, will address conference attendees. Who: What When: Where: U.S. Energy Secretary Steven Chu Award reception and remarks at the Laser Institute of America Annual Meeting Wednesday, September 29, 12:30 pm

186

Renewable Energy Sources Optimization: A Micro-Grid Model Design  

Science Journals Connector (OSTI)

Abstract This paper analyzes the possibility to develop the simple micro-grid model in optimizing the utilization of local renewable energy for on-grid area. The proposed micro-grid model integrates the power plants driven by renewable energy sources employing micro hydro (MHP) and photovoltaic system (PV) which is connected to grid system. This model is analyzed using HOMER and MATLAB software. Based on the load profiles and the availability of water resources, the HOMER simulates the proposed micro-grid model with three options of MHP capacity. The simulation results show that the micro-grid model with the largest capacity MHP produced the lowest energy cost, greatest reduction of CO2 emission, and largest fraction of renewable energy. However, these result required the expensive initial capital cost. In addition, the PV power generation was always recommended with a minimum capacity. Hence, MATLAB results show the performances of the power plants with renewable energy sources were used maximally.

R. Nazir; H.D. Laksono; E.P. Waldi; E. Ekaputra; P. Coveria

2014-01-01T23:59:59.000Z

187

Injection of a Phase Modulated Source into the Z-Beamlet Laser for Increased Energy Extraction.  

SciTech Connect (OSTI)

The Z-Beamlet laser has been operating at Sandia National Laboratories since 2001 to provide a source of laser-generated x-rays for radiography of events on the Z-Accelerator. Changes in desired operational scope have necessitated the increase in pulse duration and energy available from the laser system. This is enabled via the addition of a phase modulated seed laser as an alternative front-end. The practical aspects of deployment are discussed here.

Rambo, Patrick K.; Armstrong, Darrell J.; Schwarz, Jens; Smith, Ian C; Shores, Jonathon; Speas, Christopher; Porter, John L.

2014-11-01T23:59:59.000Z

188

Wood energy fuel cycle optimization in beech and spruce forests  

Science Journals Connector (OSTI)

A novel synergistic approach to reducing emissions from residential wood combustion (RWC) is presented. Wood energy fuel cycle optimization (FCO) aims to provide cleaner burning fuels through optimization of forestry and renewable energy management practices. In this work, beech and spruce forests of average and high quality were modelled and analysed to determine the volume of fuel wood and its associated bark fraction produced during typical forestry cycles. Two separate fuel wood bark production regimes were observed for beech trees, while only one production regime was observed for spruce. The single tree and stand models were combined with existing thinning parameters to replicate existing management practices. Utilizing estimates of initial seedling numbers and existing thinning patterns a dynamic model was formed that responded to changes in thinning practices. By varying the thinning parameters, this model enabled optimization of the forestry practices for the reduction of bark impurities in the fuel wood supply chain. Beech forestry cycles responded well to fuel cycle optimization with volume reductions of bark from fuel wood of between ~10% and ~20% for average and high quality forest stands. Spruce, on the other hand, was fairly insensitive to FCO with bark reductions of 0–5%. The responsiveness of beech to FCO further supports its status as the preferred RWC fuel in Switzerland. FCO could easily be extended beyond Switzerland and applied across continental Europe and North America.

Nickolas K Meyer; Marco Mina

2012-01-01T23:59:59.000Z

189

The Relationship between Water and Energy: Optimizing Water and Energy  

E-Print Network [OSTI]

understanding that the highest value opportunities for water conservation usually exist where there is the strongest interaction of water and energy. Steam management systems, process cooling, high quality water production and waste water treatment represent...

Finley, T.; Fennessey, K.; Light, R.

2007-01-01T23:59:59.000Z

190

Economic Optimal Operation of Community Energy Storage Systems in Competitive Energy Markets  

E-Print Network [OSTI]

Distributed, controllable energy storage devices offer several significant benefits to electric power system operation. Three such benefits include reducing peak load, providing standby power, and enhancing power quality. These benefits, however, are only realized during peak load or during an outage, events that are infrequent. This paper presents a means of realizing additional benefits by taking advantage of the fluctuating costs of energy in competitive energy markets. An algorithm for optimal charge/discharge scheduling of community energy storage (CES) devices as well as an analysis of several of the key drivers of such optimization are discussed.

Arghandeh, Reza; Onen, Ahmet; Jung, Jaesung; Broadwater, Robert P

2014-01-01T23:59:59.000Z

191

Economic optimal operation of Community Energy Storage systems in competitive energy markets  

Science Journals Connector (OSTI)

Abstract Distributed, controllable energy storage devices offer several benefits to electric power system operation. Three such benefits include reducing peak load, providing standby power, and enhancing power quality. These benefits, however, are only realized during peak load or during an outage, events that are infrequent. This paper presents a means of realizing additional benefits by taking advantage of the fluctuating costs of energy in competitive energy markets. An algorithm for optimal charge/discharge scheduling of Community Energy Storage (CES) devices as well as an analysis of several of the key drivers of the optimization are discussed.

Reza Arghandeh; Jeremy Woyak; Ahmet Onen; Jaesung Jung; Robert P. Broadwater

2014-01-01T23:59:59.000Z

192

Capsule: An Energy-Optimized Object Storage System for Memory-Constrained Sensor Devices  

E-Print Network [OSTI]

Capsule: An Energy-Optimized Object Storage System for Memory-Constrained Sensor Devices Gaurav-constrained sensor platforms. We propose Capsule, an energy-optimized log-structured object storage system for flash and supports energy-optimized imple- mentations of commonly used storage objects such as streams, files, arrays

Massachusetts at Amherst, University of

193

Dynamic online optimization of a house heating system in a fluctuating energy price  

E-Print Network [OSTI]

Dynamic online optimization of a house heating system in a fluctuating energy price scenario University of Science and Technology (NTNU), Trondheim, Norway Abstract: We consider dynamic optimization of the energy consumption in a building with energy storage capabilities. The goal is to find optimal policies

Skogestad, Sigurd

194

Method for Determining Optimal Residential Energy Efficiency Retrofit Packages  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Method for Determining Method for Determining Optimal Residential Energy Efficiency Retrofit Packages B. Polly, M. Gestwick, M. Bianchi, R. Anderson, S. Horowitz, C. Christensen, and R. Judkoff National Renewable Energy Laboratory April 2011 ii NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process,

195

Laser propagation and energy absorption by an argon spark C. V. Bindhu, S. S. Harilal,a)  

E-Print Network [OSTI]

Laser propagation and energy absorption by an argon spark C. V. Bindhu, S. S. Harilal,a) M. S The laser propagation and energy absorption of an argon spark induced by a laser at different pressures is investigated. 8 ns pulses from a frequency-doubled Q-switched Nd:YAG laser are used to create the spark

Tillack, Mark

196

Renewable Energy Optimization Report for Naval Station Newport  

SciTech Connect (OSTI)

In 2008, the U.S. Environmental Protection Agency (EPA) launched the RE-Powering America's Land initiative to encourage the development of renewable energy (RE) on potentially contaminated land and mine sites. As part of this effort, EPA is collaborating with the U.S. Department of Energy's (DOE's) National Renewable Energy Laboratory (NREL) to evaluate RE options at Naval Station (NAVSTA) Newport in Newport, Rhode Island. NREL's Renewable Energy Optimization (REO) tool was utilized to identify RE technologies that present the best opportunity for life-cycle cost-effective implementation while also serving to reduce energy-related carbon dioxide emissions and increase the percentage of RE used at NAVSTA Newport. The technologies included in REO are daylighting, wind, solar ventilation preheating (SVP), solar water heating, photovoltaics (PV), solar thermal (heating and electric), and biomass (gasification and cogeneration). The optimal mix of RE technologies depends on several factors including RE resources; technology cost and performance; state, utility, and federal incentives; and economic parameters (discount and inflation rates). Each of these factors was considered in this analysis. Technologies not included in REO that were investigated separately per NAVSTA Newport request include biofuels from algae, tidal power, and ground source heat pumps (GSHP).

Robichaud, R.; Mosey, G.; Olis, D.

2012-02-01T23:59:59.000Z

197

Energy optimization for off-lattice protein folding  

Science Journals Connector (OSTI)

Two three-dimensional AB off-lattice protein models consisting of hydrophobic and hydrophilic monomers are studied in this paper. By incorporating an extra energy contribution into the original energy function, the protein folding is converted from a constraint optimization problem into an unconstrained one which can be solved by the well-known gradient method. From the initial configurations randomly generated by the heuristic strategy proposed in this paper, our algorithm can find better results than those by nPERM for the four Fibonacci sequences. Based on the initial configurations obtained by energy landscape paving (ELP) routine, some of our results for the lowest energies are better than the best values reported in the literature.

Wenqi Huang; Mao Chen; Zhipeng Lü

2006-10-09T23:59:59.000Z

198

TIMELY DELIVERY OF LASER INERTIAL FUSION ENERGY (LIFE)  

SciTech Connect (OSTI)

The National Ignition Facility (NIF), the world's largest and most energetic laser system, is now operational at Lawrence Livermore National Laboratory. A key goal of the NIF is to demonstrate fusion ignition for the first time in the laboratory. Its flexibility allows multiple target designs (both indirect and direct drive) to be fielded, offering substantial scope for optimization of a robust target design. In this paper we discuss an approach to generating gigawatt levels of electrical power from a laser-driven source of fusion neutrons based on these demonstration experiments. This 'LIFE' concept enables rapid time-to-market for a commercial power plant, assuming success with ignition and a technology demonstration program that links directly to a facility design and construction project. The LIFE design makes use of recent advances in diode-pumped, solid-state laser technology. It adopts the paradigm of Line Replaceable Units utilized on the NIF to provide high levels of availability and maintainability and mitigate the need for advanced materials development. A demonstration LIFE plant based on these design principles is described, along with the areas of technology development required prior to plant construction. A goal-oriented, evidence-based approach has been proposed to allow LIFE power plant rollout on a time scale that meets policy imperatives and is consistent with utility planning horizons. The system-level delivery builds from our prior national investment over many decades and makes full use of the distributed capability in laser technology, the ubiquity of semiconductor diodes, high volume manufacturing markets, and U.S. capability in fusion science and nuclear engineering. The LIFE approach is based on the ignition evidence emerging from NIF and adopts a line-replaceable unit approach to ensure high plant availability and to allow evolution from available technologies and materials. Utilization of a proven physics platform for the ignition scheme is an essential component of an acceptably low-risk solution. The degree of coupling seen on NIF between driver and target performance mandates that little deviation be adopted from the NIF geometry and beamline characteristics. Similarly, the strong coupling between subsystems in an operational power plant mandates that a self-consistent solution be established via an integrated facility delivery project. The benefits of separability of the subsystems within an IFE plant (driver, chamber, targets, etc.) emerge in the operational phase of a power plant rather than in its developmental phase. An optimized roadmap for IFE delivery needs to account for this to avoid nugatory effort and inconsistent solutions. For LIFE, a system design has been established that could lead to an operating power plant by the mid-2020s, drawing from an integrated subsystem development program to demonstrate the required technology readiness on a time scale compatible with the construction plan. Much technical development work still remains, as does alignment of key stakeholder groups to this newly emerging development option. If the required timeline is to be met, then preparation of a viable program is required alongside the demonstration of ignition on NIF. This will enable timely analysis of the technical and economic case and establishment of the appropriate delivery partnership.

Dunne, A M

2010-11-30T23:59:59.000Z

199

Energy Secretary Chu to Receive Arthur L. Schawlow Award at the Laser  

Broader source: Energy.gov (indexed) [DOE]

Receive Arthur L. Schawlow Award at the Receive Arthur L. Schawlow Award at the Laser Institute of America Annual Meeting Energy Secretary Chu to Receive Arthur L. Schawlow Award at the Laser Institute of America Annual Meeting September 28, 2010 - 12:00am Addthis Washington D.C. --- U.S. Energy Secretary Steven Chu will receive the Arthur L. Schawlow Award at the Laser Institute of America Annual Meeting tomorrow in Anaheim, CA, in recognition of his contributions to applications of lasers in science. Chu, who won the 1997 Nobel Prize in physics for his work using lasers to cool and trap atoms, will address conference attendees. Who: What When: Where: U.S. Energy Secretary Steven Chu Award reception and remarks at the Laser Institute of America Annual Meeting Wednesday, September 29, 12:30 pm Anaheim Marriott Hotel

200

Optimal energy-preserving conversions of quantum coherence  

E-Print Network [OSTI]

Given two coherent superpositions of energy eigenstates, we search for the best evolution that converts one superposition into the other without exchanging energy with the surrounding environment. We consider both deterministic and probabilistic evolutions, which can be obtained by measuring the environment and postselecting a subset of the outcomes. For every fixed value of the postselection probability, we characterize the process that maximizes the fidelity of the output state with the target, showing that the optimal measurement can be chosen without loss of generality to be binary and pure. We then construct a recursive protocol, which allows one to increase the success probability while reaching maximum fidelity at each step of the iteration. In turn, the recursive protocol is used to generate efficient approximations of the optimal fidelity-probability tradeoff, via a technique dubbed coherent coarse-graining. Such a technique can be applied not only to energy-preserving conversions, but also to general conversions of pure states under linear constraints. The recursive protocol and its coherent coarse-graining are illustrated in a series of applications to phase estimation, quantum cloning, coherent state amplification, and ancilla-driven computation.

Yuxiang Yang; Giulio Chiribella

2015-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Optimal Operation of Independent Storage Systems in Energy and Reserve Markets with High Wind Penetration  

E-Print Network [OSTI]

Optimal Operation of Independent Storage Systems in Energy and Reserve Markets with High Wind to offer energy and reserve in the day-ahead market and energy in the hour-ahead market. We, energy and reserve markets, wind power integration, stochastic optimization. NOMENCLATURE h, t Indices

Mohsenian-Rad, Hamed

202

Optimizing the Output of a Human-Powered Energy Harvesting System with Miniaturization and Integrated Control  

E-Print Network [OSTI]

1 Optimizing the Output of a Human-Powered Energy Harvesting System with Miniaturization mechanical energy from human foot-strikes and explore its configuration and control towards optimized energy output. Dielectric Elastomers (DEs) are high-energy density, soft, rubber-like material

Potkonjak, Miodrag

203

Exergetic optimization of solar collector and thermal energy storage system  

Science Journals Connector (OSTI)

This paper deals with the exergetic optimization of a solar thermal energy system. This consists of a solar collector (SC) and a rectangular water storage tank (ST) that contains a phase change material (PCM) distributed in an assembly of slabs. The study takes into account both conduction and convection heat transfer mode for water in the SC, and also the phase change process for the PCM in the ST. An analytical solution for the melting process in the PCM is also presented. The results of the study are compared with previous experimental data, confirming the accuracy of the model. Results of a numerical case study are presented and discussed.

F. Aghbalou; F. Badia; J. Illa

2006-01-01T23:59:59.000Z

204

Optimization of a hybrid solar energy collector system  

E-Print Network [OSTI]

OPTIMIZATION OF A HYBRID SOLAR ENERGY COLLECTOR SYSTEM A Thesis by ALAN M. SHI NEMAN Submitted to the Graduate College of Texas A&N University in partial fulfillment of the requirement for the degree MASTER OF SCIENCE May 1981 Major Subject...: Mechanical Engineering THE STRUCTURAL IMPACT OF COMMODITY FARM PROGRAMS ON FARMS IN THE SOUTHERN TEXAS HIGH PLAINS A Thesis by CHRISTINA KAY SHIRLEY Submitted to the Graduate College of Texas A&M University in par'tial fulfillment of the requirement...

Shinkman, Alan M.

1981-01-01T23:59:59.000Z

205

Pulse energy measurement at the hard x-ray laser in Japan  

SciTech Connect (OSTI)

The pulse energies of a free electron laser have accurately been measured in the hard x-ray spectral range. In the photon energy regime from 4.4 keV to 16.8 keV, pulse energies up to 100 {mu}J were obtained at the hard x-ray laser facility SACLA (SPring-8 Angstrom Compact free-electron LAser). Two independent methods, using a cryogenic radiometer and a gas monitor detector, were applied and agreement within 3.3% was achieved. Based on our validated pulse energy measurement, a SACLA online monitor detector could be calibrated for all future experiments.

Kato, M.; Tanaka, T.; Saito, N. [National Institute of Advanced Industrial Science and Technology (AIST), NMIJ, Tsukuba 305-8568 (Japan); RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan); Kurosawa, T. [National Institute of Advanced Industrial Science and Technology (AIST), NMIJ, Tsukuba 305-8568 (Japan); Richter, M. [RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan); Physikalisch-Technische Bundesanstalt (PTB), Abbestrasse 2-12, D-10587 Berlin (Germany); Sorokin, A. A. [RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan); Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, D-22603 Hamburg (Germany); Ioffe Physico-Technical Institute, RAS, Polytekhnicheskaya 26, 194021 St. Petersburg (Russian Federation); Tiedtke, K. [RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan); Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, D-22603 Hamburg (Germany); Kudo, T.; Yabashi, M. [RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan); Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198 (Japan); Tono, K. [Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198 (Japan); Ishikawa, T. [RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan)

2012-07-09T23:59:59.000Z

206

Statistical analysis and optimization of processing parameters in high-power direct diode laser cladding  

Science Journals Connector (OSTI)

High-power direct diode laser (HPDDL) offers a wide laser beam with a top-hat intensity distribution, ... making it an ideal tool for large-area cladding. In this study, a systemic study on the HPDDL cladding pro...

Shuang Liu; Radovan Kovacevic

2014-09-01T23:59:59.000Z

207

Optimization of laser cladding process using taguchi and EM methods for MMC coating production  

Science Journals Connector (OSTI)

This study investigates the influence of laser cladding parameters on the geometry and composition of ... determine the real volumetric content of WC. Laser cladding on low-carbon steel substrate is carried ... c...

L. Dubourg; L. St-Georges

2006-12-01T23:59:59.000Z

208

Optimizing energy for a ‘green’ vaccine supply chain  

Science Journals Connector (OSTI)

Abstract This paper describes an approach piloted in the Kasserine region of Tunisia to increase the energy efficiency of the distribution of vaccines and temperature sensitive drugs. The objectives of an approach, known as the ‘net zero energy’ (NZE) supply chain were demonstrated within the first year of operation. The existing distribution system was modified to store vaccines and medicines in the same buildings and to transport them according to pre-scheduled and optimized delivery circuits. Electric utility vehicles, dedicated to the integrated delivery of vaccines and medicines, improved the regularity and reliability of the supply chains. Solar energy, linked to the electricity grid at regional and district stores, supplied over 100% of consumption meeting all energy needs for storage, cooling and transportation. Significant benefits to the quality and costs of distribution were demonstrated. Supply trips were scheduled, integrated and reliable, energy consumption was reduced, the recurrent cost of electricity was eliminated and the release of carbon to the atmosphere was reduced. Although the initial capital cost of scaling up implementation of NZE remain high today, commercial forecasts predict cost reduction for solar energy and electric vehicles that may permit a step-wise implementation over the next 7–10 years. Efficiency in the use of energy and in the deployment of transport is already a critical component of distribution logistics in both private and public sectors of industrialized countries. The NZE approach has an intensified rationale in countries where energy costs threaten the maintenance of public health services in areas of low population density. In these countries where the mobility of health personnel and timely arrival of supplies is at risk, NZE has the potential to reduce energy costs and release recurrent budget to other needs of service delivery while also improving the supply chain.

John S. Lloyd; Steve McCarney; Ramzi Ouhichi; Patrick Lydon; Michel Zaffran

2014-01-01T23:59:59.000Z

209

Weather forecast-based optimization of integrated energy systems.  

SciTech Connect (OSTI)

In this work, we establish an on-line optimization framework to exploit detailed weather forecast information in the operation of integrated energy systems, such as buildings and photovoltaic/wind hybrid systems. We first discuss how the use of traditional reactive operation strategies that neglect the future evolution of the ambient conditions can translate in high operating costs. To overcome this problem, we propose the use of a supervisory dynamic optimization strategy that can lead to more proactive and cost-effective operations. The strategy is based on the solution of a receding-horizon stochastic dynamic optimization problem. This permits the direct incorporation of economic objectives, statistical forecast information, and operational constraints. To obtain the weather forecast information, we employ a state-of-the-art forecasting model initialized with real meteorological data. The statistical ambient information is obtained from a set of realizations generated by the weather model executed in an operational setting. We present proof-of-concept simulation studies to demonstrate that the proposed framework can lead to significant savings (more than 18% reduction) in operating costs.

Zavala, V. M.; Constantinescu, E. M.; Krause, T.; Anitescu, M.

2009-03-01T23:59:59.000Z

210

Time-resolved spectroscopy of plasma plumes: A versatile approach for optimization of high-order harmonic generation in laser plasma  

SciTech Connect (OSTI)

The time-resolved studies of laser-produced Ag, In, Pt, V, Mn, and Ga plasmas are presented from the point of view of plasma application as the nonlinear optical medium for high-order harmonic generation of laser radiation. We show that optimization of plasma formation using this technique allows the enhancement of harmonic generation efficiency and extension of maximal harmonic order.

Ganeev, R. A. [Institut national de la recherche scientifique, Centre Energie, Materiaux et Telecommunications, 1650 Lionel-Boulet, Varennes, Quebec J3X 1S2 (Canada); Institute of Electronics, Akademgorodok, 33 Dormon Yoli street, Tashkent 100125 (Uzbekistan); Elouga Bom, L. B.; Ozaki, T. [Institut national de la recherche scientifique, Centre Energie, Materiaux et Telecommunications, 1650 Lionel-Boulet, Varennes, Quebec J3X 1S2 (Canada)

2011-08-15T23:59:59.000Z

211

Addressing Control of Hazardous Energy (COHE) Requirements in a Laser Safety Program  

SciTech Connect (OSTI)

OSHA regulation 29CFR1910.147 specifies control of hazardous energy requirements for 'the servicing and maintenance of machines and equipment in which the unexpected energization or start up of the machines or equipment, or release of stored energy could cause injury to employees.' Class 3B and Class 4 laser beams must be considered hazardous energy sources because of the potential for serious eye injury; careful consideration is therefore needed to safely de-energize these lasers. This paper discusses and evaluates control of hazardous energy principles in this OSHA regulation, in ANSI Z136.1 ''Safe Use of Lasers,'' and in ANSI Z244.1 ''Control of Hazardous Energy, Lockout/Tagout and Alternative Methods.'' Recommendations are made for updating and improving CoHE (control of hazardous energy) requirements in these standards for their applicability to safe laser operations.

Woods, Michael; /SLAC

2012-02-15T23:59:59.000Z

212

Optimal Energy Recovery from Ammonia Synthesis in a Solar Thermal Power Plant  

Science Journals Connector (OSTI)

This work estimates the optimal performance, and evaluates a process modification to approach optimal ammonia production and subsequent energy produced, in the ammonia synthesis heat recovery system for a 10 MW(e...

S. Siddiq; S. Khushnood; Z. U. Koreshi…

2013-09-01T23:59:59.000Z

213

Optimal design and operation of energy systems under uncertainty  

Science Journals Connector (OSTI)

Abstract This paper is concerned with integrated design and operation of energy systems that are subject to significant uncertainties. The problem is cast as a two-stage stochastic programming problem, which can be transformed into a large-scale nonconvex mixed-integer nonlinear programming problem (MINLP). The MINLP exhibits a decomposable structure that can be exploited by nonconvex generalized Benders decomposition (NGBD) for efficient global optimization. This paper extends the NGBD method developed by the authors recently, such that the method can handle non-separable functions and integer operational decisions. Both the standard NGBD algorithm and an enhanced one with piecewise convex relaxations are discussed. The advantages of the proposed formulation and solution method are demonstrated through case studies of two industrial energy systems, a natural gas production network and a polygeneration plant. The first example shows that the two-stage stochastic programming formulation can result in better expected economic performance than the deterministic formulation, and that NGBD is more efficient than a state-of-the-art global optimization solver. The second example shows that the integration of piecewise convex relaxations can improve the efficiency of NGBD by at least an order of magnitude.

Xiang Li; Paul I. Barton

2014-01-01T23:59:59.000Z

214

Instantaneous x-ray radiation energy from laser produced polystyrene plasmas for shock ignition conditions  

SciTech Connect (OSTI)

Laser target energy coupling mechanism is crucial in the shock ignition (SI) scheme, and x-ray radiation energy is a non-negligible portion of the laser produced plasma energy. To evaluate the x-ray radiation energy amount at conditions relevant to SI scheme, instantaneous x-ray radiation energy is investigated experimentally with continuum phase plates smoothed lasers irradiating layer polystyrene targets. Comparative laser pulses without and with shock spike are employed. With the measured x-ray angular distribution, full space x-ray radiation energy and conversion efficiency are observed. Instantaneous scaling law of x-ray conversion efficiency is obtained as a function of laser intensity and time. It should be pointed out that the scaling law is available for any laser pulse shape and intensity, with which irradiates polystyrene planar target with intensity from 2 × 10{sup 14} to 1.8 × 10{sup 15} W/cm{sup 2}. Numerical analysis of the laser energy transformation is performed, and the simulation results agree with the experimental data.

Shang, Wanli; Wei, Huiyue; Li, Zhichao; Yi, Rongqing; Zhu, Tuo; Song, Tianmin; Huang, Chengwu; Yang, Jiamin [Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900 (China)] [Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900 (China)

2013-10-15T23:59:59.000Z

215

Oneida Tribe of Indians of Wisconsin Energy Optimization Model  

SciTech Connect (OSTI)

Oneida Nation is located in Northeast Wisconsin. The reservation is approximately 96 square miles (8 miles x 12 miles), or 65,000 acres. The greater Green Bay area is east and adjacent to the reservation. A county line roughly splits the reservation in half; the west half is in Outagamie County and the east half is in Brown County. Land use is predominantly agriculture on the west 2/3 and suburban on the east 1/3 of the reservation. Nearly 5,000 tribally enrolled members live in the reservation with a total population of about 21,000. Tribal ownership is scattered across the reservation and is about 23,000 acres. Currently, the Oneida Tribe of Indians of Wisconsin (OTIW) community members and facilities receive the vast majority of electrical and natural gas services from two of the largest investor-owned utilities in the state, WE Energies and Wisconsin Public Service. All urban and suburban buildings have access to natural gas. About 15% of the population and five Tribal facilities are in rural locations and therefore use propane as a primary heating fuel. Wood and oil are also used as primary or supplemental heat sources for a small percent of the population. Very few renewable energy systems, used to generate electricity and heat, have been installed on the Oneida Reservation. This project was an effort to develop a reasonable renewable energy portfolio that will help Oneida to provide a leadership role in developing a clean energy economy. The Energy Optimization Model (EOM) is an exploration of energy opportunities available to the Tribe and it is intended to provide a decision framework to allow the Tribe to make the wisest choices in energy investment with an organizational desire to establish a renewable portfolio standard (RPS).

Troge, Michael [Project Manager

2014-12-30T23:59:59.000Z

216

Monte Carlo study for optimal conditions in single-shot imaging with femtosecond x-ray laser pulses  

SciTech Connect (OSTI)

Intense x-ray pulses from x-ray free electron lasers (XFELs) enable the unveiling of atomic structure in material and biological specimens via ultrafast single-shot exposures. As the radiation is intense enough to destroy the sample, a new sample must be provided for each x-ray pulse. These single-particle delivery schemes require careful optimization, though systematic study to find such optimal conditions is still lacking. We have investigated two major single-particle delivery methods: particle injection as flying objects and membrane-mount as fixed targets. The optimal experimental parameters were searched for via Monte Carlo simulations to discover that the maximum single-particle hit rate achievable is close to 40%.

Park, Jaehyun; Ishikawa, Tetsuya; Song, Changyong [RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo, Hyogo 679-5148 (Japan)] [RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo, Hyogo 679-5148 (Japan); Joti, Yasumasa [Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo, Hyogo 679-5198 (Japan)] [Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo, Hyogo 679-5198 (Japan)

2013-12-23T23:59:59.000Z

217

Optimal Use of Power-to-Gas Energy Storage Systems in an 85% Renewable Energy Scenario  

Science Journals Connector (OSTI)

Abstract In future energy systems with high shares of fluctuating renewable energy generation, electricity storage will become increasingly important for the utilization of surplus energy. The Power-to-Gas (PtG) technology is one promising option for solving the challenge of long-term electricity storage and is theoretically able to ease situations of grid congestion at the same time. This article presents the perspectives of PtG in an 85% renewable energy scenario for Germany, quantifying an economic optimum for the PtG capacity as well as an optimized spatial PtG deployment.

Mareike Jentsch; Tobias Trost; Michael Sterner

2014-01-01T23:59:59.000Z

218

High energy bursts from a solid state laser operated in the heat capacity limited regime  

DOE Patents [OSTI]

High energy bursts are produced from a solid state laser operated in a heat capacity limited regime. Instead of cooling the laser, the active medium is thermally well isolated. As a result, the active medium will heat up until it reaches some maximum acceptable temperature. The waste heat is stored in the active medium itself. Therefore, the amount of energy the laser can put out during operation is proportional to its mass, the heat capacity of the active medium, and the temperature difference over which it is being operated. The high energy burst capacity of a heat capacity operated solid state laser, together with the absence of a heavy, power consuming steady state cooling system for the active medium, will make a variety of applications possible. Alternately, cooling takes place during a separate sequence when the laser is not operating. Industrial applications include new material working processes. 5 figs.

Albrecht, G.; George, E.V.; Krupke, W.F.; Sooy, W.; Sutton, S.B.

1996-06-11T23:59:59.000Z

219

High energy bursts from a solid state laser operated in the heat capacity limited regime  

DOE Patents [OSTI]

High energy bursts are produced from a solid state laser operated in a heat capacity limited regime. Instead of cooling the laser, the active medium is thermally well isolated. As a result, the active medium will heat up until it reaches some maximum acceptable temperature. The waste heat is stored in the active medium itself. Therefore, the amount of energy the laser can put out during operation is proportional to its mass, the heat capacity of the active medium, and the temperature difference over which it is being operated. The high energy burst capacity of a heat capacity operated solid state laser, together with the absence of a heavy, power consuming steady state cooling system for the active medium, will make a variety of applications possible. Alternately, cooling takes place during a separate sequence when the laser is not operating. Industrial applications include new material working processes.

Albrecht, Georg (Livermore, CA); George, E. Victor (Livermore, CA); Krupke, William F. (Pleasanton, CA); Sooy, Walter (Pleasanton, CA); Sutton, Steven B. (Manteca, CA)

1996-01-01T23:59:59.000Z

220

Coulomb driven energy boost of heavy ions for laser plasma acceleration  

E-Print Network [OSTI]

An unprecedented increase of kinetic energy of laser accelerated heavy ions is demonstrated. Ultra thin gold foils have been irradiated by an ultra short laser pulse at an intensity of $6\\times 10^{19}$ W/cm$^{2}$. Highly charged gold ions with kinetic energies up to $> 200$ MeV and a bandwidth limited energy distribution have been reached by using $1.3$ Joule laser energy on target. $1$D and $2$D Particle in Cell simulations show how a spatial dependence on the ions ionization leads to an enhancement of the accelerating electrical field. Our theoretical model considers a varying charge density along the target normal and is capable of explaining the energy boost of highly charged ions, leading to a higher efficiency in laser acceleration of heavy ions.

Braenzel, J; Platonov, K; Klingsporn, M; Ehrentraut, L; Sandner, W; Schnürer, M

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Remote generation of high-energy terahertz pulses from two-color femtosecond laser filamentation in air  

SciTech Connect (OSTI)

We experimentally investigated the dynamic behavior of remote terahertz (THz) generation from two-color femtosecond laser-induced filamentation in air. A record-high THz pulse energy of 570 nJ at frequency below 5.5 THz was measured by optimizing the pump parameters at a controllable remote distance of 16 m, while super-broadband THz (<300 THz) pulse energy was up to 2.8 {mu}J. A further energy-scaling possibility was proposed. By analyzing simultaneously the fluorescence from both neutral N{sub 2} and N{sub 2}{sup +} in the filament, we found that the enhancement of THz radiation was due principally to guiding of the weak second-harmonic pulse inside the filament of the first strong fundamental pulse.

Wang, T.-J.; Daigle, J.-F.; Yuan, S.; Chin, S. L. [Centre d'Optique, Photonique et Laser (COPL) and Departement de physique, de genie physique et d'optique, Universite Laval, Quebec, Quebec G1V 0A6 (Canada); Theberge, F.; Chateauneuf, M.; Dubois, J.; Roy, G. [Defence Research and Development Canada-Valcartier, 2459 Pie-XI Boulevard North, Quebec, Quebec G3J 1X5 (Canada); Zeng, H. [State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062 (China)

2011-05-15T23:59:59.000Z

222

High energy density micro plasma bunch from multiple laser interaction with thin target  

SciTech Connect (OSTI)

Three-dimensional particle-in-cell simulation is used to investigate radiation-pressure driven acceleration and compression of small solid-density plasma by intense laser pulses. It is found that multiple impacts by presently available short-pulse lasers on a small hemispheric shell target can create a long-living tiny quasineutral monoenergetic plasma bunch of very high energy density.

Xu, Han [National Laboratory for Parallel and Distributed Processing, College of Computer Science, National University of Defense Technology, Changsha 410073 (China); Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800 (China); Yu, Wei; Luan, S. X.; Xu, Z. Z. [Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800 (China); Yu, M. Y., E-mail: myyu@zju.edu.cn [Physics Department, Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China); Institute for Theoretical Physics I, Ruhr University, Bochum D-44780 (Germany); Cai, H. B.; Zhou, C. T. [Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China); Yang, X. H.; Yin, Y.; Zhuo, H. B. [College of Science, National University of Defense Technology, Changsha (China); Wang, J. W. [Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800 (China); Institute of Laser Engineering, Osaka University, Osaka 565-0871 (Japan); Murakami, M. [Institute of Laser Engineering, Osaka University, Osaka 565-0871 (Japan)

2014-01-13T23:59:59.000Z

223

Optimal strategies for operating energy storage in an arbitrage Lisa Flatley  

E-Print Network [OSTI]

Optimal strategies for operating energy storage in an arbitrage market Lisa Flatley Robert S Mac, energy storage, optimal localized algorithm. AMS subject classifications. 49K30, 93C10 1 Introduction [0, T], for an energy store which is trading in an arbitrage market. Our theory allows for leakage

Sengun, Mehmet Haluk

224

Optimal control of a multi-energy district boiler: a case study  

E-Print Network [OSTI]

Optimal control of a multi-energy district boiler: a case study J. Eynard S. Grieu M. Polit of a multi-energy district boiler (La Rochelle, France) which supplies domestic hot water and heats optimizing the use of both the tank and the wood boiler. As a result, fossil energy consumption and CO2

Paris-Sud XI, Université de

225

An Evolutionary Multi-objective Approach for Speed Tuning Optimization with Energy Saving  

E-Print Network [OSTI]

An Evolutionary Multi-objective Approach for Speed Tuning Optimization with Energy Saving in railway manage- ment is presented for optimizing both travel duration and energy saving. This approach reported and analyzed. Index Terms--Multi-objective, Evolutionary algorithm, Energy saving, Railway

Paris-Sud XI, Université de

226

Multi-objective Evolutionary Algorithm for Speed Tuning Optimization with Energy Saving in Railway  

E-Print Network [OSTI]

Multi-objective Evolutionary Algorithm for Speed Tuning Optimization with Energy Saving in Railway is proposed for optimization of speed profiles in railway inte- grating energy saving. This approach deals) and results are then provided and analyzed. Keywords Multi-objective, Evolutionary algorithm, Energy saving

Paris-Sud XI, Université de

227

Modeling Zero Energy Building: technical and economical optimization Maria Ferrara1-2  

E-Print Network [OSTI]

1 Modeling Zero Energy Building: technical and economical optimization Maria Ferrara1-2 , Joseph by the recast of Energy Performance of Buildings. The aim of this work is to provide a useful method to deal combines the use of TRNSYS, building energy simulation program, with GenOpt, Generic Optimization program

Paris-Sud XI, Université de

228

Optimization of Energy and Water Consumption in Corn-Based Ethanol Plants  

Science Journals Connector (OSTI)

Optimization of Energy and Water Consumption in Corn-Based Ethanol Plants ... In this paper we study the simultaneous energy and water consumption in the conceptual design of corn-based ethanol plants. ... Review of Energy Optimization in Corn-Based Ethanol Plant ...

Elvis Ahmetovi?; Mariano Martín; Ignacio E. Grossmann

2010-05-11T23:59:59.000Z

229

Optimization of quantum Monte Carlo wave functions using analytical energy derivatives  

E-Print Network [OSTI]

Optimization of quantum Monte Carlo wave functions using analytical energy derivatives Xi Lin of the local energy, H^ / .5 If the wave function were the exact ground eigenstate, the local energy would November 1999 An algorithm is proposed to optimize quantum Monte Carlo QMC wave functions based on Newton

Lin, Xi

230

Energy management of HEV to optimize fuel consumption and pollutant emissions  

E-Print Network [OSTI]

AVEC'12 Energy management of HEV to optimize fuel consumption and pollutant emissions Pierre Michel, several energy management strategies are proposed to optimize jointly the fuel consumption and pollutant-line strategy are given. Keywords: Hybrid Electric Vehicle (HEV), energy management, pollution, fuel consumption

Paris-Sud XI, Université de

231

Optimal and Autonomous Incentive-based Energy Consumption Scheduling Algorithm for Smart Grid  

E-Print Network [OSTI]

1 Optimal and Autonomous Incentive-based Energy Consumption Scheduling Algorithm for Smart Grid by running a distributed algorithm to find the optimal energy consumption schedule for each subscriber consumption occurs in buildings. This represents 39% of the total energy consumption among all sectors

Wong, Vincent

232

A Stochastic Programming Framework for Optimal Storage Bidding in Energy and Reserve Markets  

E-Print Network [OSTI]

1 A Stochastic Programming Framework for Optimal Storage Bidding in Energy and Reserve Markets to offer both energy and reserve in the day-ahead as well as the hour- ahead markets. We are particularly: Independent storage systems, energy and reserve markets, wind power integration, stochastic optimization I

Mohsenian-Rad, Hamed

233

Wireless Networked Lighting Systems for Optimizing Energy Savings and User Satisfaction  

E-Print Network [OSTI]

Wireless Networked Lighting Systems for Optimizing Energy Savings and User Satisfaction Yao for modern lighting systems ­ energy efficiency and user satisfaction. The intelligent lighting optimization algorithm formulates lighting control as a linear programming problem to minimize energy usage and meet

Agogino, Alice M.

234

Optimization Intensive Energy Harvesting Mahsan Rofouei, Mohammad Ali Ghodrat, Miodrag Potkonjak  

E-Print Network [OSTI]

Optimization Intensive Energy Harvesting Mahsan Rofouei, Mohammad Ali Ghodrat, Miodrag Potkonjak of primary limiting factors of MSs is their energy sensitivity. In order to overcome this limitation, we have developed an optimization intensive approach for energy harvesting. Our goal is to size and position

Potkonjak, Miodrag

235

Optimal investment and scheduling of distributed energy resources with uncertainty in electric vehicles driving schedules  

E-Print Network [OSTI]

R. Firestone, “Optimal Technology Selection and Operation ofDOE - Energy Vehicle Technologies Program. Plug-in HybridUsing vehicle-to-grid technology for frequency regulation

Cardoso, Goncalo

2014-01-01T23:59:59.000Z

236

NIF achieves record laser energy in pursuit of fusion ignition | National  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

achieves record laser energy in pursuit of fusion ignition | National achieves record laser energy in pursuit of fusion ignition | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > NIF achieves record laser energy in pursuit ... NIF achieves record laser energy in pursuit of fusion ignition Posted By Office of Public Affairs NNSA Blog The NNSA's National Ignition Facility (NIF) surpassed a critical

237

Efficient laser acceleration of proton beams for intense sources of low energy neutrinos  

SciTech Connect (OSTI)

The existence of highly efficient ion acceleration regimes in collective laser-plasma interactions opens up the possibility to develop high-energy-physics (HEP) facilities in conjunction with projects for inertial confined nuclear fusion (ICF) and neutron spallation sources.

Pegoraro, F. [Department of Physics, University of Pisa, Pisa (Italy); CNISM, Pisa (Italy); Bulanov, S. V.; Esirkepov, T. Zh.; Tajima, T. [Advanced Photon Research Centre, JAEA, Kizu, Kyoto (Japan); Migliozzi, P. [INFN, Sez. di Napoli, Naples (Italy); Terranova, F. [INFN, Laboratori Nazionali di Frascati, Frascati (Italy)

2006-04-07T23:59:59.000Z

238

Realization of a high energy, high beam quality CO2 laser using a SFUR cavity  

Science Journals Connector (OSTI)

We have obtained a source with a high beam qualty and output energy, which could be useful for laser-surface interaction studies. A very promising injection method has been tested in a very critical configurat...

P. L. Belli; G. Bitelli; F. D'Amato…

1989-12-01T23:59:59.000Z

239

High-energy Laser Amplifiers using Ultra-broad Emitting Yb-doped Materials  

Science Journals Connector (OSTI)

High-energy laser amplifiers using Yb-doped gain media often show reduced efficiencies especially when operating at ultra-short pulses. We summarize techniques to improve storage and...

Siebold, Mathias; Loeser, Markus; Roeser, Fabian; Uecker, Reinhard; Koerner, Joerg; Hein, Joachim; Hornung, Marco; Kaluza, Malte; Schramm, Ulrich

240

High Energy Density Sate, Material and Device with High Power Lasers  

Science Journals Connector (OSTI)

High energy density states with photon pressures of more than Tera bar and thermal pressure of more than Mega bar, is now available with high power lasers. Here I present creation of...

Kodama, R

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Ignition studies in support of the European High Power Laser Energy Research Facility project  

Science Journals Connector (OSTI)

The European High Power Laser Energy Research Facility (HiPER) project is ... of the fusion target mixing prior to thermonuclear ignition have been investigated using the 1D Lagrangian...Z ion species may inhibit...

J. Pasley

2010-11-01T23:59:59.000Z

242

Pathways to Inertial Fusion Energy Laser Direct Drive  

E-Print Network [OSTI]

(NRL) Smoothing by Spectral Dispersion ­ SSD (LLE) DT ice preheated ablator (lower density) DT ice "Gain" = Fusion power OUT / laser power IN 143/572 = 25% Recirculating power (Nuclear reactions (electricity) Target "Gain" = Fusion power OUT / laser power IN 143/880 = 16% Recirculating power (Nuclear

243

Optical fiber configurations for transmission of laser energy over great distances  

DOE Patents [OSTI]

There are provided optical fiber configurations that provide for the delivery of laser energy, and in particular, the transmission and delivery of high power laser energy over great distances. These configurations further are hardened to protect the optical fibers from the stresses and conditions of an intended application. The configurations provide means for determining the additional fiber length (AFL) need to obtain the benefits of such additional fiber, while avoiding bending losses.

Rinzler, Charles C; Zediker, Mark S

2014-11-04T23:59:59.000Z

244

CAD of Microwave Chemistry Reactors with Energy Efficiency Optimized for Multiple Reactants  

E-Print Network [OSTI]

CAD of Microwave Chemistry Reactors with Energy Efficiency Optimized for Multiple Reactants Ethan K for additional practically important condition requiring the reactor's optimal design for different reactants reactor for 3 different materials: with 1/5 liter reactants, seven-parameter optimization yields the best

Yakovlev, Vadim

245

A Relaxation Strategy for the Optimization of Airborne Wind Energy Sebastien Gros, M. Zanon and Moritz Diehl  

E-Print Network [OSTI]

A Relaxation Strategy for the Optimization of Airborne Wind Energy Systems S´ebastien Gros, M. Zanon and Moritz Diehl Abstract-- Optimal control is recognized by the Airborne Wind Energy (AWE problem. Keywords : airborne wind energy, optimal control, non- convex optimization, flight control I

246

Optimal Sizing of Energy Storage System in Solar Energy Electric Vehicle Using Genetic Algorithm and Neural Network  

Science Journals Connector (OSTI)

Owing to sun’s rays distributing randomly and discontinuously and load fluctuation, energy storage system is very important in Solar Energy Electric Vehicle (SEEV). The combinatorial optimization ... and neural n...

Shiqiong Zhou; Longyun Kang; MiaoMiao Cheng…

2007-01-01T23:59:59.000Z

247

Photo of the Week: Laser Beats Rock | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Laser Beats Rock Laser Beats Rock Photo of the Week: Laser Beats Rock April 8, 2013 - 5:28pm Addthis On August 5, 2012, the Curiosity rover touched down on the surface of Mars. The ChemCam instrument package, developed at Los Alamos National Laboratory, is a device mounted on the Mars Curiosity rover that uses two remote sensing instruments: the Laser-Induced Breakdown Spectrometer (LIBS) and a Remote Micro-Imager (RMI). The LIBS fires a powerful laser that determines chemical compositions of rock and soil samples, while the RMI takes photos of the samples within the rover's vicinity. In this photo, the ChemCam is being prepared in the clean room prior to the launch of NASA's Mars Science Laboratory mission. Learn more about the ChemCam. | Photo courtesy of Los Alamos National Laboratory.

248

X-ray lasers and methods utilizing two component driving illumination provided by optical laser means of relatively low energy and small physical size  

DOE Patents [OSTI]

An X-ray laser (10), and related methodology, are disclosed wherein an X-ray laser target (12) is illuminated with a first pulse of optical laser radiation (14) of relatively long duration having scarcely enough energy to produce a narrow and linear cool plasma of uniform composition (38). A second, relatively short pulse of optical laser radiation (18) is uniformly swept across the length, from end to end, of the plasma (38), at about the speed of light, to consecutively illuminate continuously succeeding portions of the plasma (38) with optical laser radiation having scarcely enough energy to heat, ionize, and invert them into the continuously succeeding portions of an X-ray gain medium. This inventive double pulse technique results in a saving of more than two orders of magnitude in driving optical laser energy, when compared to the conventional single pulse approach.

Rosen, Mordecai D. (Berkeley, CA); Matthews, Dennis L. (El Granada, CA)

1991-01-01T23:59:59.000Z

249

Two-Screen Method for Determining Electron Beam Energy and Deflection from Laser Wakefield Acceleration  

SciTech Connect (OSTI)

Laser Wakefield Acceleration (LWFA) experiments have been performed at the Jupiter Laser Facility, Lawrence Livermore National Laboratory. In order to unambiguously determine the output electron beam energy and deflection angle at the plasma exit, we have implemented a two-screen electron spectrometer. This system is comprised of a dipole magnet followed by two image plates. By measuring the electron beam deviation from the laser axis on each plate, both the energy and deflection angle at the plasma exit are determined through the relativistic equation of motion.

Pollock, B B; Ross, J S; Tynan, G R; Divol, L; Glenzer, S H; Leurent, V; Palastro, J P; Ralph, J E; Froula, D H; Clayton, C E; Marsh, K A; Pak, A E; Wang, T L; Joshi, C

2009-04-24T23:59:59.000Z

250

NREL-Optimizing Rooftop Space with SolOpt Presentation | Open Energy  

Open Energy Info (EERE)

NREL-Optimizing Rooftop Space with SolOpt Presentation NREL-Optimizing Rooftop Space with SolOpt Presentation Jump to: navigation, search Tool Summary Name: Optimizing Rooftop Space with SolOpt Agency/Company /Organization: National Renewable Energy Laboratory Sector: Energy Focus Area: Buildings, Solar Topics: Implementation, Technology characterizations Resource Type: Presentation, Guide/manual, Training materials Website: www.solaramericacities.energy.gov/pdfs/2010_annual_meeting/Thu400_SWH_ Optimizing Rooftop Space with SolOpt Screenshot References: Optimizing Rooftop Space with SolOpt[1] Logo: Optimizing Rooftop Space with SolOpt This presentation answers the question: "How do you decide what type of solar system should be used for a specific facility?" References ↑ "Optimizing Rooftop Space with SolOpt"

251

Optimal Real-time Dispatch for Integrated Energy Systems  

E-Print Network [OSTI]

was approximately to heat- or load-follow. As in Baltimore,reviews of CHP cost and performance. no DG load-follow heat-follow optimal load-follow heat-follow optimal TOU CPP year

Firestone, Ryan Michael

2007-01-01T23:59:59.000Z

252

Secure Distributed Solution for Optimal Energy Consumption Scheduling in Smart Grid  

E-Print Network [OSTI]

Secure Distributed Solution for Optimal Energy Consumption Scheduling in Smart Grid Mohammad: Smart Grid, Energy Consumption Schedule, Privacy. I. INTRODUCTION Energy is critically important varying energy prices, giving incentive for using energy at off-peak hours. Smart grids provide innovative

Shehab, Mohamed

253

Soldering with solid state and diode lasers: Energy coupling, temperature rise, process window  

Science Journals Connector (OSTI)

The increasing number of electrical contacts in automobiles in combination with more complex and miniaturized components leads to higher requirements for the joining technologies. In that context laser soldering represents an interesting alternative to conventional techniques. So far solid state lasers[Nd:yttrium–aluminum–garnet(YAG)] and CO 2 lasers have been successfully applied in industrial production. Recently the development of high power diode lasers has offered a new laser source for soldering with technological advantages. Absorptivity of laser radiation on metals generally increases with shorter wavelength and consequently diode lasers may lead to a higher process efficiency compared to Nd:YAG lasers. The absorptivity of copper alloys with different surface conditions has been measured at 808 nm (diode) and 1064 nm (Nd:YAG). When heating up the solder joint the intensity distribution of the different laser spots becomes important too. This effect is demonstrated by means of process modeling and temperature measurements for a typical joint geometry. For the case of soldering strip-to-strip joints the effects of the different energy absorption on the process are pointed out.

M. Brandner; G. Seibold; C. Chang; F. Dausinger; H. Hügel

2000-01-01T23:59:59.000Z

254

Hector is an Energy effiCient Tree-based Optimized Routing protocol for wireless networks  

E-Print Network [OSTI]

Hector is an Energy effiCient Tree-based Optimized Routing protocol for wireless networks Nathalie geographic locations. We propose HECTOR, a hybrid energy efficient tree-based optimized routing protocol, based on two sets of virtual coordinates. One set is based on rooted tree coordinates, and the other

Stojmenovic, Ivan

255

The National Ignition Facility and Laser Fusion Energy  

Science Journals Connector (OSTI)

This talk provides an update of the NIC on the National Ignition Facility at the Lawrence Livermore National Laboratory and the roadmap to demonstrate laser fusion as a viable source...

Moses, E I

256

Solar-pumped Laser and its Application to Energy Conversion  

Science Journals Connector (OSTI)

We have realized solar-pumped lasers(SPLs) using small-sized YAG rods and fluoride fibers. We review the detailed oscillation properties under natural sunlight, and propose...

Hasegawa, Kazuo; ITO, Hiroshi; MIZUNO, Shintaro; TAKEDA, Yasuhiko; ICHIKAWA, Tadashi; MOTOHIRO, Tomoyoshi; YAMAGA, Mitsuo; OHISHI, Yasutake; SUZUKI, Takenobu

257

Optimization of an External Cavity Quantum Cascade Laser for Chemical Sensing Applications  

SciTech Connect (OSTI)

We describe and characterize an external cavity quantum cascade laser designed for detection of multiple airborne chemicals, and used with a compact astigmatic Herriott cell for sensing of acetone and hydrogen peroxide.

Phillips, Mark C.; Bernacki, Bruce E.; Taubman, Matthew S.; Cannon, Bret D.; Schiffern, John T.; Myers, Tanya L.

2010-03-01T23:59:59.000Z

258

Design, optimization, and applications of few-cycle Ti:Sapphire lasers  

E-Print Network [OSTI]

Ti:Sapphire mode-locked lasers are a unique technology that enables a wide variety of applications. Owing to the ultrabroadband nature of the Ti:sapphire crystal and the invention of precisely engineered dispersion-compensating ...

880-01 Chen, Li jin

2012-01-01T23:59:59.000Z

259

Optimization of the baseline and the parent muon energy for a low energy neutrino factory  

Science Journals Connector (OSTI)

We discuss the optimal setup for a low energy neutrino factory in order to achieve a 5? discovery of a nonzero mixing angle ?13, a nonzero CP phase ?CP, and the mass hierarchy. We explore parent muon energies in the range 5–16 GeV, and baselines in the range 500–5000 km. We present the results in terms of the reach in sin?2?13, emphasizing the dependence of the optimal baseline on the true value of ?CP. We show that the sensitivity of a given setup typically increases with parent muon energy, reaching saturation for higher energies. The saturation energy is larger for longer baselines; we present an estimate of this dependence. In the light of the recent indications of a large ?13, we also determine how these preferences would change if indeed a large ?13 is confirmed. In such a case, the baselines ?2500??km (?1500??km) may be expected to lead to hierarchy determination (?CP discovery) with the minimum exposure.

Amol Dighe, Srubabati Goswami, and Shamayita Ray

2012-10-02T23:59:59.000Z

260

Utility Optimal Scheduling in Energy Harvesting Networks Longbo Huang, Michael J. Neely  

E-Print Network [OSTI]

], etc. However, to take full advantage of the energy har- vesting technology, efficient scheduling referred to as "recycling" energy [5]. This energy har- vesting ability is crucial for many network designUtility Optimal Scheduling in Energy Harvesting Networks Longbo Huang, Michael J. Neely ABSTRACT

Huang, Longbo

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

An Energy Efficient Select Optimal Neighbor Protocol for Wireless Ad Hoc Networks  

E-Print Network [OSTI]

. This is especially important in wireless sensor networks where energy consumption is the primary concern. A number node compared to CSMA/CA based MAC protocols such as IEEE 802.11. When electronic energy consumption is a considerable part of energy consumption, SON has a better energy performance than traditional optimal pruning

New South Wales, University of

262

Toward an Optimal Fixed-Priority Algorithm for Energy-Harvesting Real-Time Systems  

E-Print Network [OSTI]

on their energy consumption. Thus, the results of this work rely on the assumption that tasks energy consumptionToward an Optimal Fixed-Priority Algorithm for Energy-Harvesting Real-Time Systems Yasmina the real-time xed-priority scheduling problem for battery-powered embedded systems whose energy storage

Paris-Sud XI, Université de

263

IEEE/ACM TRANS. ON NETWORKING, TO APPEAR 1 Utility Optimal Scheduling in Energy Harvesting  

E-Print Network [OSTI]

the environment. For instance, by converting me- chanical vibration into energy [1], by using solar panels [2IEEE/ACM TRANS. ON NETWORKING, TO APPEAR 1 Utility Optimal Scheduling in Energy Harvesting Networks performance in energy harvesting networks with only finite capacity energy storage devices. In these networks

Huang, Longbo

264

Optimizing Architectural and Structural Aspects of Buildings towards Higher Energy Efficiency  

E-Print Network [OSTI]

. INTRODUCTION The continuous rising of energy consumption is a current and global concern. On the one hand for the most important energy consumption rate, estimated at around 40% of the total energy used worldwideOptimizing Architectural and Structural Aspects of Buildings towards Higher Energy Efficiency

Boyer, Edmond

265

A Remark on the Method of Electron Beam Energy Measurement Using Laser Light Resonance Absorption  

E-Print Network [OSTI]

The problem of measuring of the electron beam energy by help of the laser light interaction with the electrons is discussed. It is shown that the orthogonal orientation of the laser beam with respect to the electron one, proposed in the present Note, may allow to perform this measurement in accordance with the physical nature of a formation of an electron quantum levels in a magnetic field. In result, the final formula, that expresses the beam energy through the strength of a magnetic field and the energy of the laser photon, gets a transparent physical meaning and do contain a less number of parameters (what may lead to an increase of the precision of the measurement). Some other sequences from this proposal, like the change of the geometry of the experimental set-up and the necessity of a new additional detector to register the products of the Compton scattering for monitoring of the beam energy measurements, are discussed also.

N. B. Skachkov

2005-03-01T23:59:59.000Z

266

Generation of high-energy-density ion bunches by ultraintense laser-cone-target interaction  

SciTech Connect (OSTI)

A scheme in which carbon ion bunches are accelerated to a high energy and density by a laser pulse (?10{sup 21}?W/cm{sup 2}) irradiating cone targets is proposed and investigated using particle-in-cell simulations. The laser pulse is focused by the cone and drives forward an ultrathin foil located at the cone's tip. In the course of the work, best results were obtained employing target configurations combining a low-Z cone with a multispecies foil transversely shaped to match the laser intensity profile.

Yang, X. H.; Zhuo, H. B., E-mail: hongbin.zhuo@gmail.com; Ma, Y. Y.; Zou, D. B.; Yu, T. P.; Ge, Z. Y.; Yin, Y.; Shao, F. Q. [College of Science, National University of Defense Technology, Changsha 410073 (China); Yu, W. [Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China); Xu, H., E-mail: xuhanemail@gmail.com [State Key Laboratory of High Performance Computing, National University of Defense Technology, Changsha 410073 (China); Borghesi, M., E-mail: m.borghesi@qub.ac.uk [School of Mathematics and Physics, Queen's University of Belfast, Belfast BT7 1NN (United Kingdom); Institute of Physics of the ASCR, ELI-Beamlines Project, Na Slovance 2, 18221 Prague (Czech Republic)

2014-06-15T23:59:59.000Z

267

Experimental Observation of Electrons Accelerated in Vacuum to Relativistic Energies by a High-Intensity Laser  

Science Journals Connector (OSTI)

Free electrons have been accelerated in vacuum to MeV energies by a high-intensity subpicosecond laser pulse ( 1019 W/cm2, 300 fs). The experimental data are in good agreement with the relativistic motion of electrons in a spatially and temporally finite electromagnetic field, both in terms of maximum energy and scattering angle.

G. Malka; E. Lefebvre; J. L. Miquel

1997-04-28T23:59:59.000Z

268

Present and future perspectives for high energy density physics with intense heavy ion and laser beams  

E-Print Network [OSTI]

Present and future perspectives for high energy density physics with intense heavy ion and laser18, deliver an intense uranium beam that deposit about 1 kJ0g specific energy in solid matter. Using 2004! Abstract Intense heavy ion beams from the Gesellschaft für Schwerionenforschung ~GSI, Darmstadt

269

Laser assisted proton collision on light nuclei at moderate energies  

E-Print Network [OSTI]

We present analytic angular differential cross section model for laser assisted proton nucleon scattering on a Woods-Saxon optical potential where the nth-order photon absorption is taken into account simultaneously. As a physical example we calculate cross sections for proton - $^{12}$C collision at 49 MeV in the laboratory frame where the laser intensity is in the range of $ 10^{7} - 10^{21}$ W/cm$^2$ at optical frequencies. The upper intensity limit is slightly below the relativistic regime.

I. F Barna; S. Varro

2014-06-24T23:59:59.000Z

270

Low-energy x-ray and electron physics and applications to diagnostics development for laser-produced plasma research. Final report, April 30, 1980-April 29, 1981  

SciTech Connect (OSTI)

This final report describes a collaborative extension of an ongoing research program in low-energy x-ray and electron physics into particular areas of immediate need for the diagnostics of plasmas as involved in laser-produced fusion research. It has been for the continued support for one year of a post-doctoral research associate and for three student research assistants who have been applied to the following specific efforts: (1) the continuation of our research on the absolute characterization of x-ray photocathode systems for the 0.1 to 10 keV photon energy region. The research results were applied collaboratively to the design, construction and calibration of photocathodes for time-resolved detection with the XRD and the streak and framing cameras; (2) the design, construction and absolute calibration of optimized, bolt-on spectrographs for the absolute measurement of laser-produced plasma spectra.

Henke, B.L.

1981-08-01T23:59:59.000Z

271

Optimization Online - Energy Savings in Wireless Mesh Networks in ...  

E-Print Network [OSTI]

Jan 24, 2011 ... Abstract: Energy consumption of communication systems is ... Keywords: Energy savings, wireless Mesh Networks, Green networking.

Antonio Capone

2011-01-24T23:59:59.000Z

272

BPA Wins Platts Global Energy Award for Grid Optimization | Department of  

Broader source: Energy.gov (indexed) [DOE]

BPA Wins Platts Global Energy Award for Grid Optimization BPA Wins Platts Global Energy Award for Grid Optimization BPA Wins Platts Global Energy Award for Grid Optimization December 18, 2013 - 2:25pm Addthis Platts awarded the Bonneville Power Administration (BPA) a Global Energy Award for grid optimization on December 12 in New York City for its development of a synchrophasor network. BPA is part of the Recovery Act-funded Western Interconnection Synchrophasor Program, in which 19 utilities have partnered with the Department of Energy to provide real-time visibility of the entire western power system that covers 14 states, two Canadian provinces and a portion of the Baja Peninsula in Mexico. Through a dedicated, secure network provided by Western Interconnection Synchrophasor Program, BPA is sharing synchrophasor data with 10 other utilities,

273

High fidelity nuclear energy system optimization towards an environmentally benign, sustainable, and secure energy source.  

SciTech Connect (OSTI)

The impact associated with energy generation and utilization is immeasurable due to the immense, widespread, and myriad effects it has on the world and its inhabitants. The polar extremes are demonstrated on the one hand, by the high quality of life enjoyed by individuals with access to abundant reliable energy sources, and on the other hand by the global-scale environmental degradation attributed to the affects of energy production and use. Thus, nations strive to increase their energy generation, but are faced with the challenge of doing so with a minimal impact on the environment and in a manner that is self-reliant. Consequently, a revival of interest in nuclear energy has followed, with much focus placed on technologies for transmuting nuclear spent fuel. The performed research investigates nuclear energy systems that optimize the destruction of nuclear waste. In the context of this effort, nuclear energy system is defined as a configuration of nuclear reactors and corresponding fuel cycle components. The proposed system has unique characteristics that set it apart from other systems. Most notably the dedicated High-Energy External Source Transmuter (HEST), which is envisioned as an advanced incinerator used in combination with thermal reactors. The system is configured for examining environmentally benign fuel cycle options by focusing on minimization or elimination of high level waste inventories. Detailed high-fidelity exact-geometry models were developed for representative reactor configurations. They were used in preliminary calculations with Monte Carlo N-Particle eXtented (MCNPX) and Standardized Computer Analysis for Licensing Evaluation (SCALE) code systems. The reactor models have been benchmarked against existing experimental data and design data. Simulink{reg_sign}, an extension of MATLAB{reg_sign}, is envisioned as the interface environment for constructing the nuclear energy system model by linking the individual reactor and fuel component sub-models for overall analysis of the system. It also provides control over key user input parameters and the ability to effectively consolidate vital output results for uncertainty/sensitivity analysis and optimization procedures. The preliminary analysis has shown promising advanced fuel cycle scenarios that include Pressure Water Reactors Pressurized Water Reactors (PWRs), Very High Temperature Reactors (VHTRs) and dedicated HEST waste incineration facilities. If deployed, these scenarios may substantially reduce nuclear waste inventories approaching environmentally benign nuclear energy system characteristics. Additionally, a spent fuel database of the isotopic compositions for multiple design and control parameters has been created for the VHTR-HEST input fuel streams. Computational approaches, analysis metrics, and benchmark strategies have been established for future detailed studies.

Tsvetkov, Pavel Valeryevich (Texas A& M University, College Station, TX); Rodriguez, Salvador B.; Ames, David E., II (Texas A& M University, College Station, TX); Rochau, Gary Eugene

2009-09-01T23:59:59.000Z

274

Laser-induced quadrupole-quadrupole collisional energy transfer in Xe-Kr systems  

Science Journals Connector (OSTI)

Experimental investigation of laser-induced quadrupole-quadrupole collisional energy transfer between Xe and Kr is reported in this paper. The excitation spectrum of laser-induced collisional energy transfer (LICET) is characterized by a slowly decreasing tail on the blue side of the peak and a width of ?30 cm?1. The experimental evidence shows that in the quasistatic wing the quadrupole-quadrupole LICET spectrum follows a power law that is different from the dipole-dipole LICET line shape and the profile of the quadrupole-quadrupole LICET decreases more slowly than the dipole-dipole LICET profile. The results indicate that the laser-induced quadrupole-quadrupole collision can be considered as a practical process to transfer energy selectively from a storage state making a parity-nonallowed transition to a target state making a parity-allowed transition.

Zhenzhong Lu (???); Deying Chen (???); Rongwei Fan (???); Yuanqin Xia (???)

2012-06-01T23:59:59.000Z

275

Array detector for high energy laser based on diffuse transmission sampling  

SciTech Connect (OSTI)

In order to improve the ability and accuracy of measuring the temporal–spatial distribution of the intensity of a large-size, high-energy laser beam, a novel array detecting method based on diffuse transmission sampling is proposed. The measurement principle and the design of the sampling and attenuating unit are presented. High-temperature-resistant diffuse transmission material is used to sample and attenuate a high energy laser beam. Pure copper, whose surface is first sand-blasted and then gold-plated, is applied to scatter the incident high-energy laser beam. The formula for the attenuation ratio was derived in detail. We developed two large-aperture array detectors with spatial resolution of 5 mm, spatial duty ratio of 20%, and useable angle range of ±30° without varying the responsivity, the non-uniformity in the laser profile measurement is below 1%, and the repeatability error in the laser power measurement is approximately 1%. The maximal energy density that the array detector can endure is more than 10 kJ/cm{sup 2}.

Pang, Miao [School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054 (China) [School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054 (China); Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang, 621900 China (China); Key Laboratory of High Energy Laser, CAEP, Mianyang 621900 (China); Rong, Jian [School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054 (China)] [School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054 (China); Zhou, Shan; Wu, Juan; Zhang, Wei; Hu, Xiaoyang [Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang, 621900 China (China)] [Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang, 621900 China (China); Fan, Guobin [Key Laboratory of High Energy Laser, CAEP, Mianyang 621900 (China)] [Key Laboratory of High Energy Laser, CAEP, Mianyang 621900 (China)

2014-01-15T23:59:59.000Z

276

New High-Power Laser Technology | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

edge technology developers to pioneer applications that accelerate the adoption of geothermal energy. In 2013, Foro Energy, Inc. (Foro) partnered with the GTO, through a 50...

277

Optimal Futures Market Strategies for Energy Service Providers  

Science Journals Connector (OSTI)

The previous chapter focused on developing a stochastic model for the dynamics of electricity prices. Here we show how the bid-based model can be applied to help market participants optimize their decision making...

Petter L. Skantze; Marija D. Ilic

2001-01-01T23:59:59.000Z

278

Local energy management through mathematical modeling and optimization  

E-Print Network [OSTI]

(cont.) Extensions to the core TOTEM model include a demand charge model, used for making daily optimal control decisions when the electric bill includes a charge based on the monthly maximum power draw. The problem of ...

Craft David (David Loren), 1973-

2004-01-01T23:59:59.000Z

279

Knowledge Management Based Cooperation for Energy Cost Optimization  

Science Journals Connector (OSTI)

The paper presents studies on the improvement and development of cooperation methods for cost optimization in power supply systems using polygeneration technology. A support for cooperating operators, which ar...

Dariusz Choinski; Radoslaw Dymek…

2013-01-01T23:59:59.000Z

280

Optimal control of investments for quality of supply improvement in electrical energy distribution networks  

Science Journals Connector (OSTI)

This paper considers the problem of deciding multi-period investments for maintenance and upgrade of electrical energy distribution networks. After describing the network as a constrained hybrid dynamical system, optimal control theory is applied to ... Keywords: Hybrid systems, Investment planning, Mixed-integer programming, Optimal control, Stochastic systems

A. Bemporad; D. Muñoz de la Peña; P. Piazzesi

2006-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Science on high-energy lasers: From today to the NIF  

SciTech Connect (OSTI)

This document presents both a concise definition of the current capabilities of high energy lasers and a description of capabilities of the NIF (National Ignition Facility). Five scientific areas are discussed (Astrophysics, Hydrodynamics, Material Properties, Plasma Physics, Radiation Sources, and Radiative Properties). In these five areas we project a picture of the future based on investigations that are being carried on today. Even with this very conservative approach we find that the development of new higher energy lasers will make many extremely exciting areas accessible to us.

Lee, R.W.; Petrasso, R.; Falcone, R.W.

1995-01-01T23:59:59.000Z

282

The effects of laser energy on modelling the characteristics of p-n diodes  

E-Print Network [OSTI]

THE EFFECTS OF LASER ENERGY ON MODELLING THE CHARACTERISTICS OF P-N DIODES A Thesis by WILLIAM ALFRED SEVERIN Submitted to the Graduate College of Texas A&M University in partial fulfullment of the requirements for the degree of MASTER... OF SCIENCE August 1984 Ma jor Sub]ect: Electrical Engineering THE EFFECTS LASER ENERGY ON MODELLING THE CHARACTERISTICS OF P-N DIODES A Thesis WILLIAM ALFRED SEVERIN Approved as to style and content by: (Chairma of Committee) Dr. Phillip E. Allen...

Severin, William Alfred

2012-06-07T23:59:59.000Z

283

Passive tailoring of laser-accelerated ion beam cut-off energy by using double foil assembly  

SciTech Connect (OSTI)

A double foil assembly is shown to be effective in tailoring the maximum energy produced by a laser-accelerated proton beam. The measurements compare favorably with adiabatic expansion simulations, and particle-in-cell simulations. The arrangement proposed here offers for some applications a simple and passive way to utilize simultaneously highest irradiance lasers that have best laser-to-ion conversion efficiency while avoiding the production of undesired high-energy ions.

Chen, S. N., E-mail: sophia.chen@polytechnique.edu; Brambrink, E.; Mancic, A.; Romagnani, L.; Audebert, P.; Fuchs, J., E-mail: julien.fuchs@polytechnique.fr [Laboratoire pour l'Utilisation des Lasers Intenses, UMR 7605 CNRS-CEA-École Polytechnique-Université Paris VI, Palaiseau (France); Robinson, A. P. L. [Central Laser Facility, STFC Rutherford-Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom)] [Central Laser Facility, STFC Rutherford-Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom); Antici, P. [Laboratoire pour l'Utilisation des Lasers Intenses, UMR 7605 CNRS-CEA-École Polytechnique-Université Paris VI, Palaiseau (France) [Laboratoire pour l'Utilisation des Lasers Intenses, UMR 7605 CNRS-CEA-École Polytechnique-Université Paris VI, Palaiseau (France); Dipartimento SBAI, Università di Roma « La Sapienza », Via Scarpa 14-16, 00165 Roma (Italy); INRS-Énergie et Matériaux, 1650 bd. L. Boulet, Varennes, J3X1S2 Québec (Canada); D'Humières, E. [Physics Department, MS-220, University of Nevada, Reno, Nevada 89557 (United States) [Physics Department, MS-220, University of Nevada, Reno, Nevada 89557 (United States); Centre de Physique Théorique, CNRS-Ecole Polytechnique, 91128 Palaiseau (France); University of Bordeaux—CNRS—CEA, CELIA, UMR5107, 33405 Talence (France); Gaillard, S. [Physics Department, MS-220, University of Nevada, Reno, Nevada 89557 (United States)] [Physics Department, MS-220, University of Nevada, Reno, Nevada 89557 (United States); Grismayer, T.; Mora, P. [Centre de Physique Théorique, CNRS-Ecole Polytechnique, 91128 Palaiseau (France)] [Centre de Physique Théorique, CNRS-Ecole Polytechnique, 91128 Palaiseau (France); Pépin, H. [INRS-Énergie et Matériaux, 1650 bd. L. Boulet, Varennes, J3X1S2 Québec (Canada)] [INRS-Énergie et Matériaux, 1650 bd. L. Boulet, Varennes, J3X1S2 Québec (Canada)

2014-02-15T23:59:59.000Z

284

PET: Reducing Database Energy Cost via Query Optimization  

E-Print Network [OSTI]

the potential of energy saving. However, the state-of-art architec- ture of DBMS does not take energy usage the existence of and study the energy-saving potential of many energy-efficient query plans. The database increase of energy cost in database services [3, 5]. Techniques such as hard- ware power-model control

Tu, Yicheng

285

A Simple Asymptotically Optimal Joint Energy Allocation and Routing Scheme in Rechargeable  

E-Print Network [OSTI]

of the optimum. Through simulations with replenishment profile traces for solar and wind energy, we numerically is limited battery of sensor nodes. Energy harvesting from various natural sources, such as solar1 A Simple Asymptotically Optimal Joint Energy Allocation and Routing Scheme in Rechargeable Sensor

Sinha, Prasun

286

Optimal Energy Consumption Scheduling Using Mechanism Design for the Future Smart Grid  

E-Print Network [OSTI]

Optimal Energy Consumption Scheduling Using Mechanism Design for the Future Smart Grid Pedram may need to collect various information about users and their energy consumption behavior, which can this problem, different programs have been proposed to shape the energy consumption pattern of the users

Wong, Vincent

287

Optimization of the Energy Efficiency of a Hybrid Broadcast/Unicast Network  

E-Print Network [OSTI]

of the potential energy gain brought by such a network. In this paper, using an enhanced version of the model- ated the potential gain of this solution from an energy point of view. By using a simple modelOptimization of the Energy Efficiency of a Hybrid Broadcast/Unicast Network Nicolas Cornillet

Boyer, Edmond

288

On Optimal Policies for Energy-Aware Servers Vincent J. Maccio  

E-Print Network [OSTI]

or lower energy state as turning the server on or off, respectively. Jobs arrive to the system accordingOn Optimal Policies for Energy-Aware Servers Vincent J. Maccio Department of Computing and Software of Computing and Software McMaster University Hamilton, Ontario Email downd@mcmaster.ca Abstract--As energy

Down, Doug

289

Cyber-Physical Systems for Optimal Energy Management Scheme of Autonomous Electric Vehicle  

Science Journals Connector (OSTI)

......consumption status and demand from AEV and charging...vehicle; energy management; event-based...the optimal energy management scheme for AEV with...of CPS for energy management framework (EMF...the consumption side to collect and analyze...consumption status and demand, and then make......

Jiafu Wan; Hehua Yan; Di Li; Keliang Zhou; Lu Zeng

2013-08-01T23:59:59.000Z

290

Joint Host-Network Optimization for Energy-Efficient Data Center Networking  

E-Print Network [OSTI]

; energy efficiency. I. INTRODUCTION Public and private data centers are becoming popular, since transport layer protocols, with TCP being the majority. The key for DCNs to achieve energy conservationJoint Host-Network Optimization for Energy-Efficient Data Center Networking Hao Jin, Tosmate

Pan, Deng

291

Energy-Optimizing Source Code Transformations for OS-driven Embedded Software  

E-Print Network [OSTI]

techniques achieve up to 37.9% (23.8% on an average) energy reduction compared to highly compiler- optimized hardware components for energy reduction, but also energy- efficient software design and compilation [1,anand¤ @nec-lab.com Abstract The increasing software content of battery-powered embedded sys- tems has fueled

Fei, Yunsi

292

Optimal Sleep-Wake Scheduling for Energy Harvesting Smart Mobile Devices  

E-Print Network [OSTI]

manage- ment for sensor nodes, under the assumption that the harvested energy sOptimal Sleep-Wake Scheduling for Energy Harvesting Smart Mobile Devices Longbo Huang Institute capacity batteries and are capable of harvesting energy from the environment. Using a novel combination

Huang, Longbo

293

Risk-sensitive optimal switching and applications to district energy systems  

E-Print Network [OSTI]

. Cost optimisation of energy system assets has typically been carried out under the assumption of riskRisk-sensitive optimal switching and applications to district energy systems Jhonny Gonzalez School consideration. In a flexible energy system with cogeneration and heat storage, however, it is possible

Glendinning, Paul

294

Optimal Microcell Deployment for Effective Mobile Device Energy Saving in Heterogeneous Networks  

E-Print Network [OSTI]

1 Optimal Microcell Deployment for Effective Mobile Device Energy Saving in Heterogeneous Networks--Heterogeneous network (HetNet) [1] is considered as an energy efficient system structure to alleviate the problemNet energy efficiency has been conducted. However, most of them only consider power consumption of Base

Boyer, Edmond

295

Energy Conversion Unit with Optimized Waveform Generation Sally Sajadian and Euzeli C. dos Santos Jr.  

E-Print Network [OSTI]

Energy Conversion Unit with Optimized Waveform Generation Sally Sajadian and Euzeli C. dos Santos to increase the efficiency of the devices dealing with energy conversion. The power supplies devices able and interleaved converters. This paper proposes an energy conversion unit constituted by a single-phase DC

Zhou, Yaoqi

296

Concurrent Optimization of Consumer's Electrical Energy Bill and Producer's Power Generation Cost under a Dynamic Pricing  

E-Print Network [OSTI]

Concurrent Optimization of Consumer's Electrical Energy Bill and Producer's Power Generation Cost lower cost. I. INTRODUCTION There is no substitute for the status of electrical energy, which. Availability of affordable and sustainable electrical energy has been the key to prosperity and continued socio

Pedram, Massoud

297

Optimization of wind turbine energy and power factor with an evolutionary computation algorithm  

E-Print Network [OSTI]

Optimization of wind turbine energy and power factor with an evolutionary computation algorithm the energy capture from the wind and enhance the quality of the power produced by the wind turbine, and harmonic distortion. As the generation of wind energy on an industrial scale is relatively new, the area

Kusiak, Andrew

298

Free Flow Energy (TRL 1 2 3 Component)- Design and Development of a Cross-Platform Submersible Generator Optimized for the Conditions of Current Energy Conversion  

Broader source: Energy.gov [DOE]

Free Flow Energy (TRL 1 2 3 Component) - Design and Development of a Cross-Platform Submersible Generator Optimized for the Conditions of Current Energy Conversion

299

Ignition of HMX (cyclotetramethylenetetranitramine) using low energy laser diodes  

SciTech Connect (OSTI)

The sensitivity of blends of cyclotetramethylenetetranitramine (HMX) with carbon black and graphite to laser diode ignition was investigated. Using a 100-{mu}m optical fiber, a blend of 15,700 cm{sup 2}/g HMX with 3{percent} carbon black by weight was the most sensitive material tested, with a threshold of 72 mW. Pure, or undoped, HMX could not be ignited using 10 ms laser diode pulses with power levels up to 880 mW. In general, the HMX/carbon black blends were more sensitive than the HMX/graphite blends. HMX specific surface area also had a significant effect on sensitivity. Doubling the spot size increased the ignition threshold by a factor of approximately 2.7. Increasing the pulse width from 10 to 100 ms did not significantly reduce the laser diode power required for ignition. Photoacoustic spectrometer was used to compare the absorption characteristics of the HMX blends. The absorption spectra obtained correlated well with the sensitivity test data. 11 refs., 5 figs., 3 tabs.

Ewick, D.W.; Beckman, T.M.; Holy, J.A.; Thorpe, R.

1990-01-01T23:59:59.000Z

300

A Framework for the Optimization of Integrated Energy Systems(Jain and  

Open Energy Info (EERE)

A Framework for the Optimization of Integrated Energy Systems(Jain and A Framework for the Optimization of Integrated Energy Systems(Jain and Alleyne 2012) Home > Groups > Energy Systems Integration Qinsun's picture Submitted by Qinsun(35) Member 15 November, 2012 - 13:19 Literature Review The author proposed a generalized, control-oriented, exergy-based objective function for optimizing the ESI. It was generalized form for ESI. The metric is suitable for power and thermal systems. It provide an objective modular. The method used in the paper was exergy and feedforward control It provided optimal control and generalized the objectives Groups: Energy Systems Integration Login to post comments Latest documents Qinsun Research topics related to ESI Posted: 15 Nov 2012 - 13:55 by Qinsun Qinsun Prospects for Nuclear Power(Davis 2012)

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Multi-stage optimization of ultrabroadband high-energy optical parametric chirped pulse amplification  

E-Print Network [OSTI]

We present a procedure for simultaneous optimization of efficiency-bandwidth product and superfluorescence noise suppression in ultrabroadband high-energy optical parametric chirped pulse amplification. Gain dependence of ...

Manzoni, Cristian

302

Optimal Energy Management of Automotive Battery Systems Including Thermal Dynamics and Aging  

Science Journals Connector (OSTI)

Hybrid-electric vehicles (HEV) has been the subject of intensive research as a field of application of optimal control in the past decade. In particular, researchers have proven that energy management (or supe...

Antonio Sciarretta; Domenico di Domenico…

2014-01-01T23:59:59.000Z

303

Fast Energy Optimal Routing in Radio Networks Using Geometric Data Structures  

E-Print Network [OSTI]

often only limited energy reserves from batteries or power from solar panels, a prime optimization under contract number IST-1999-14186 (ALCOM-FT). 1 #12; recently gained considerable interest. We

Beier, René

304

Energy-optimal schedules of real-time jobs with hard deadlines  

E-Print Network [OSTI]

In this thesis, we develop algorithms that make optimal use of frequency scaling to schedule jobs with real??time requirements. Dynamic voltage scaling is a technique used to reduce energy consumption in wide variety of systems. Reducing supply...

George, John Vijoe

2005-11-01T23:59:59.000Z

305

Optimal Power Flow of Multiple Energy Carriers(Geidl and Andersson 2007) |  

Open Energy Info (EERE)

Optimal Power Flow of Multiple Energy Carriers(Geidl and Andersson 2007) Optimal Power Flow of Multiple Energy Carriers(Geidl and Andersson 2007) Home > Groups > Energy Systems Integration Qinsun's picture Submitted by Qinsun(35) Member 15 November, 2012 - 13:04 Literature Review The author proposed a linear static state model for multiple energy carriers. The optimal power flow and economic dispatch was determined. The method is a simple method of integrated system planning The methods used in the paper are linear deterministic system without control signal, optimal power flow and economic dispatch The proposed method stabilized the power grid, reduced the marginal cost of electricity, and increased the marginal cost of natural gas. The strength of the proposed method is following: 1. it is integrated; 2. it secures to converge;

306

Webinar: Building Energy Optimization Tool (BEopt)Training  

Broader source: Energy.gov [DOE]

The U.S. Department of Energy Zero Energy Ready Home (ZERH) Program represents a whole new level of home performance, with rigorous requirements that ensure outstanding levels of energy savings,...

307

Automatic Calibration of a Building Energy Simulation Model Using a Global Optimization Program  

E-Print Network [OSTI]

optimization process minimizing the error between measured and simulated energy consumption. The ?measured? data used in this case was generated by the simulation program and will be referred to as synthetic measured data. The accuracy of calibration...). It is used to prove the possibility of automatic calibration through an optimization process. Synthetic ?data? was generated by the simulation program. This synthetic measured heating and cooling energy consumption data for the prototype building...

Lee, S. U.; Claridge, D.

2002-01-01T23:59:59.000Z

308

Investigation of laser-driven proton acceleration using ultra-short, ultra-intense laser pulses  

SciTech Connect (OSTI)

We report optimization of laser-driven proton acceleration, for a range of experimental parameters available from a single ultrafast Ti:sapphire laser system. We have characterized laser-generated protons produced at the rear and front target surfaces of thin solid targets (15 nm to 90 {mu}m thicknesses) irradiated with an ultra-intense laser pulse (up to 10{sup 20} W Dot-Operator cm{sup -2}, pulse duration 30 to 500 fs, and pulse energy 0.1 to 1.8 J). We find an almost symmetric behaviour for protons accelerated from rear and front sides, and a linear scaling of proton energy cut-off with increasing pulse energy. At constant laser intensity, we observe that the proton cut-off energy increases with increasing laser pulse duration, then roughly constant for pulses longer than 300 fs. Finally, we demonstrate that there is an optimum target thickness and pulse duration.

Fourmaux, S.; Gnedyuk, S.; Lassonde, P.; Payeur, S.; Pepin, H.; Kieffer, J. C. [INRS-EMT, Universite du Quebec, 1650 Lionel Boulet, Varennes, Quebec J3X 1S2 (Canada); Buffechoux, S.; Albertazzi, B. [INRS-EMT, Universite du Quebec, 1650 Lionel Boulet, Varennes, Quebec J3X 1S2 (Canada); LULI, UMR 7605, CNRS - CEA - Universite Paris 6 - Ecole Polytechnique, 91128 Palaiseau (France); Capelli, D.; Antici, P. [LULI, UMR 7605, CNRS - CEA - Universite Paris 6 - Ecole Polytechnique, 91128 Palaiseau (France); Dipartimento SBAI, Sapienza, Universita di Roma, Via Scarpa 16, 00161 Roma (Italy); Levy, A.; Fuchs, J. [LULI, UMR 7605, CNRS - CEA - Universite Paris 6 - Ecole Polytechnique, 91128 Palaiseau (France); Lecherbourg, L.; Marjoribanks, R. S. [Department of Physics and Institute for Optical Sciences, University of Toronto, Toronto, Ontario M5S 1A7 (Canada)

2013-01-15T23:59:59.000Z

309

Broad Energy Spectrum of Laser-Accelerated Protons for Spallation-Related Physics  

Science Journals Connector (OSTI)

A beam of MeV protons, accelerated by ultraintense laser-pulse interactions with a thin target foil, is used to investigate nuclear reactions of interest for spallation physics. The laser-generated proton beam is shown (protons were measured) to have a broad energy distribution, which closely resembles the expected energy spectrum of evaporative protons (below 50 MeV) produced in GeV-proton-induced spallation reactions. The protons are used to quantify the distribution of residual radioisotopes produced in a representative spallation target (Pb), and the results are compared with calculated predictions based on spectra modeled with nuclear Monte Carlo codes. Laser-plasma particle accelerators are shown to provide data relevant to the design and development of accelerator driven systems.

P. McKenna; K. W. D. Ledingham; S. Shimizu; J. M. Yang; L. Robson; T. McCanny; J. Galy; J. Magill; R. J. Clarke; D. Neely; P. A. Norreys; R. P. Singhal; K. Krushelnick; M. S. Wei

2005-03-04T23:59:59.000Z

310

Optimal Real-time Dispatch for Integrated Energy Systems  

E-Print Network [OSTI]

xliii Demand Side Management152 Demand Side Managementdemand response demand-side management energy efficiency

Firestone, Ryan Michael

2007-01-01T23:59:59.000Z

311

High-Energy, High-Efficiency Second-Harmonic Generation from a Nd-Doped Laser with High-Quality CsB3O5Crystal  

Science Journals Connector (OSTI)

Frequency doubling of high-energy Nd-doped laser emission yields harmonically converted laser energy (532-nm) of 1.2-J with 60 % conversion efficiency using a high optical quality...

Suzuki, Masayuki; Kiriyama, Hiromitsu; Nakai, Yoshiki; Okada, Hajime; Daito, Izuru; Bolton, Paul R; Daido, Hiroyuki; Kondo, Kiminori; Kawanishi, Shunichi; Kagebayashi, Yoshio; Yokota, Toshio

312

Advanced Vacuum Clean Equipment Optimizer Ltd AVACO | Open Energy  

Open Energy Info (EERE)

Vacuum Clean Equipment Optimizer Ltd AVACO Vacuum Clean Equipment Optimizer Ltd AVACO Jump to: navigation, search Name Advanced Vacuum & Clean Equipment Optimizer Ltd (AVACO) Place Daegu, Daegu, Korea (Republic) Product Korean manufacturer of flat panel display equipments; makes sputtering equipment for cell manufacturing. Coordinates 35.88871°, 128.614868° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.88871,"lon":128.614868,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

313

Effect of Thermodynamic Restriction on Energy Cost Optimization of RO Membrane Water Desalination  

Science Journals Connector (OSTI)

Effect of Thermodynamic Restriction on Energy Cost Optimization of RO Membrane Water Desalination ... Reduction of the overall cost of water production represents a major challenge and, in the present work, various elements of water production cost are evaluated from the viewpoint of optimization, with respect to various costs (energy, membrane area and permeability, brine management, and pressure drop), as well as the important thermodynamic cross-flow constraint, utilization of energy recovery devices, and operational feed and permeate flow rate constraints. ... Overall, as process costs above energy costs are added, the operational point for achieving minimum water production cost shifts to higher recoveries. ...

Aihua Zhu; Panagiotis D. Christofides; Yoram Cohen

2008-08-29T23:59:59.000Z

314

Solar Energy Materials & Solar Cells 88 (2005) 6573 Investigation of pulsed non-melt laser annealing  

E-Print Network [OSTI]

Solar Energy Materials & Solar Cells 88 (2005) 65­73 Investigation of pulsed non-melt laser annealing on the film properties and performance of Cu(In,Ga)Se2 solar cells Xuege Wanga , Sheng S. Lia,�, C time to modify near- surface defects and related junction properties in Cu(In,Ga)Se2 (CIGS) solar cells

Anderson, Timothy J.

315

Determination of energy thresholds on an artificial retina using a multiple-pulsed laser  

E-Print Network [OSTI]

This study is focused on determining single and multiple pulse ED?? for laser pulses of 200 ns duration. Energy thresholds in this experiment were determined on an artificial retina, for a variety of pulse widths and spot sizes. Due to numerous...

Stephenson, Albert David

2012-06-07T23:59:59.000Z

316

Maximizing Thermal Efficiency and Optimizing Energy Management (Fact Sheet), Thermal Test Facility (TTF), NREL (National Renewable Energy Laboratory)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Maximizing Thermal Efficiency and Maximizing Thermal Efficiency and Optimizing Energy Management Scientists at this living laboratory develop optimal solutions for managing energy flows within buildings and transportation systems. The built environment is stressing the utility grid to a greater degree than ever before. Growing demand for electric vehicles, space conditioning, and plug loads presents a critical opportunity for more effective energy management and development of efficiency technologies. Researchers at the Thermal Test Facility (TTF) on the campus of the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) in Golden, Colorado, are addressing this opportunity. Through analysis of efficient heating, ventilating, and air conditioning (HVAC) strategies, automated home energy management (AHEM), and energy storage systems,

317

Optimal allocation of stochastically dependent renewable energy based distributed generators in unbalanced distribution networks  

Science Journals Connector (OSTI)

Abstract This paper proposes an algorithm for modeling stochastically dependent renewable energy based distributed generators for the purpose of proper planning of unbalanced distribution networks. The proposed algorithm integrate the diagonal band Copula and sequential Monte Carlo method in order to accurately consider the multivariate stochastic dependence between wind power, photovoltaic power and the system demand. Secondly, an efficient algorithm based on modification of the traditional Big Bang-Big crunch method is proposed for optimal placement of renewable energy based distributed generators in the presence of dispatchable distributed generation. The proposed optimization algorithm aims to minimize the energy loss in unbalanced distribution systems by determining the optimal locations of non-dispatchable distributed generators and the optimal hourly power schedule of dispatchable distributed generators. The proposed algorithms are implemented in MATLAB environment and tested on the IEEE 37-node feeder. Several case studies are done and the subsequent discussions show the effectiveness of the proposed algorithms.

A.Y. Abdelaziz; Y.G. Hegazy; Walid El-Khattam; M.M. Othman

2015-01-01T23:59:59.000Z

318

Optimal supply air temperature with respect to energy use in a variable air volume system  

Science Journals Connector (OSTI)

In a variable air volume (VAV) system with 100% outdoor air, the cooling need in the building is satisfied with a certain air flow at a certain supply air temperature. To minimize the system energy use, an optimal supply air temperature can be set dependent on the load, specific fan power (SFP), chiller coefficient of performance, outdoor temperature and the outdoor relative humidity. The theory for an optimal supply air temperature is presented and the heating, ventilation and air-conditioning (HVAC) energy use is calculated depending on supply air temperature control strategy, average U-value of the building envelope and two outdoor climates. The analyses show that controlling the supply air temperature optimally results in a significantly lower HVAC energy use than with a constant supply air temperature. The optimal average U-value of the building envelope is in practise mostly zero.

Fredrik Engdahl; Dennis Johansson

2004-01-01T23:59:59.000Z

319

Dormitory Optimized Energy Performance using Spatial Archetypes Eleni Primikiri,  

E-Print Network [OSTI]

operational costs of HVAC systems in an existing building. 1. INTRODUCTION Over the past years, building takes into account basic design standards. More specifically, these standards include furniture standards. With the use of optimization, competing objectives were examined and in specific the building

Papalambros, Panos

320

Optimizing HVAC Control to Improve Building Comfort and Energy Performance  

E-Print Network [OSTI]

This paper demonstrates the benefits of optimal control in well-designed and operated buildings using a case study. The case study building was built in 2001. The HVAC and control systems have been installed with state-of-the-art equipment which...

Song, L.; Joo, I.; Dong, D.; Liu, M.; Wang, J.; Hansen, K.; Quiroz, L.; Swiatek, A.

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Optimization of Dispersed Energy Supply -Stochastic Programming with Recombining  

E-Print Network [OSTI]

cycle gas turbines may be used, which can start up within short time. Beyond the cover offshore development it could be up to 50 GW in 2030. Thereby, the sometimes strong and rapid fluctuations of a large city, the available electricity generating technologies, and the demand. The optimal load dispatch

Römisch, Werner

322

SPIRAL: JOINT RUNTIME AND ENERGY OPTIMIZATION OF LINEAR TRANSFORMS Marek Telgarsky, James C. Hoe, Jose M. F. Moura  

E-Print Network [OSTI]

Forbes Ave. Pittsburgh, PA 15232 ABSTRACT There is much interest into joint runtime and energy opti the optimiza- tion of energy and other joint runtime-energy optimization metrics. This research is supportedSPIRAL: JOINT RUNTIME AND ENERGY OPTIMIZATION OF LINEAR TRANSFORMS Marek Telgarsky, James C. Hoe

Moura, José

323

Wiring design based on Global Energy Requirement criteria: a first step towards optimization of DC distribution voltage  

E-Print Network [OSTI]

optimization methodology based on the primary energy environmental impact 2.1. The Global Energy RequirementWiring design based on Global Energy Requirement criteria: a first step towards optimization of DC. Introduction Nowadays, the global energy context leads to a need for the development of distributed Renewable

Paris-Sud XI, Université de

324

Three Case Studues of the Application of Energy Systems Optimization Best Prectices for Automatic Demand Response  

E-Print Network [OSTI]

Three Case Studies of the Application of Energy Systems Optimization Best Practices for Automatic Demand Response Yifu Shi Kelly Guiberteau Carlos Yagua, P.E. James Watt, P.E. Energy Systems Laboratory, Texas A&M University College.... INTRODUCTION The overall goal of the demand response program is to reduce facilities peak energy demand to reduce the cost of electricity for both Austin Energy and their customer. Reducing the demand mitigates the need to construct additional...

Shi, Y.; Guiberteau, K.; Yagua, C.; Watt, J.

2013-01-01T23:59:59.000Z

325

Simulation and optimization of cogeneration power plant operation using an Energy Optimization Program  

E-Print Network [OSTI]

. . . . . . . . . . 44 Significance of the work General procedures. MAVM for boiler ?11 . . 44 . . 45 . . 46 V OPTIMIZATION ALGORITHM RESEARCH 75 Introduction Equal incremental cost load dispatching Example of equal incremental cost load dispatching...) equipment models. 90 90 91 VII CASE STUDIES . . . . . . 93 Case study I: Power plant operational cost savings potential evaluation . . . . . . 93 Case study 2: Impact of basic utility rates on power plant load dispatching . 97 VIII SUMMARY...

Zhou, Jijun

2001-01-01T23:59:59.000Z

326

DOE ZERH Webinar: Building Energy Optimization Tool (BEopt) Training  

Broader source: Energy.gov [DOE]

The National Renewable Energy Laboratory (NREL) is DOE’s primary lab for renewable energy and efficiency R&D.  Through the Building America Program, NREL has developed free software to help...

327

Locally Optimal Source Routing for energy-efficient geographic routing  

Science Journals Connector (OSTI)

We analyze the problem of finding an energy-efficient path from a source node to a destination using geographic routing. ... destination than the current node can still reduce energy consumption by taking part in...

Juan A. Sanchez; Pedro M. Ruiz

2009-05-01T23:59:59.000Z

328

Optimization of cylindrical composite flywheel rotors for energy storage  

Science Journals Connector (OSTI)

We hope that our efforts will contribute towards the design of flywheel rotors that have higher energy densities and ... that this can contribute to a future electricity grid that can accommodate renewable energy...

Petrus J. Janse van Rensburg…

2013-01-01T23:59:59.000Z

329

IEEE INFOCOM 2002 1 Optimal Energy Allocation and Admission Control  

E-Print Network [OSTI]

, for the simple reason that energy efficiency in a satellite directly translates into cost savings. A satellite with lower energy requirements requires a smaller energy source (solar panel, reactor, etc.) and a lighter an economic benefit - a smaller launch vehicle might be selected, thus decreasing cost, or more maneuvering

Modiano, Eytan

330

Optimization of financial and energy structure of productive capital  

Science Journals Connector (OSTI)

......where the specific energy consumption is introduced...independent of the capital cost because different...various types of energy sources (renewable, non-traditional...5) without the energy factor was studied...the non-linear costs of installing new......

N. Hritonenko; Y. Yatsenko

2006-07-01T23:59:59.000Z

331

Residential Energy Management system for optimization of on-site generation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Residential Energy Management system for optimization of on-site generation Residential Energy Management system for optimization of on-site generation with HVAC Speaker(s): Ram Narayanamurthy Date: October 29, 2009 - 12:00pm Location: 90-3122 As the individual movements towards Net Zero Energy Homes (NZEH) and the SmartGrid converge on residential buildings, three major challenges need to be addressed: Flatten the highly peaked electric load profile of low energy homes Provide easy integration of energy efficiency into existing homes Provide builders and consumers with visibility into building operation, and ease of management. A Home Energy Management System (HEMS) owned by the consumer, capable of two way communications with Utility DR/SmartGrid/AMI is required to resolve these challenges. The HEMS will need to increase energy efficiency of building operations, provide consumers feedback and

332

Temporal synchronization of GHz repetition rate electron and laser pulses for the optimization of a compact inverse-Compton scattering x-ray source  

E-Print Network [OSTI]

The operation of an inverse-Compton scattering source of x-rays or gamma-rays requires the precision alignment and synchronization of highly focused electron bunches and laser pulses at the collision point. The arrival times of electron and laser pulses must be synchronized with picosecond precision. We have developed an RF synchronization technique that reduces the initial timing uncertainty from 350 ps to less than 2 ps, greatly reducing the parameter space to be optimized while commissioning the x-ray source. We describe the technique and present measurements of its performance.

Hadmack, Michael R; Madey, John M J; Kowalczyk, Jeremy M D

2014-01-01T23:59:59.000Z

333

Energy exchange between a laser beam and charged particles using inverse transition radiation and method for its use  

DOE Patents [OSTI]

A method and apparatus for exchanging energy between relativistic charged particles and laser radiation using inverse diffraction radiation or inverse transition radiation. The beam of laser light is directed onto a particle beam by means of two optical elements which have apertures or foils through which the particle beam passes. The two apertures or foils are spaced by a predetermined distance of separation and the angle of interaction between the laser beam and the particle beam is set at a specific angle. The separation and angle are a function of the wavelength of the laser light and the relativistic energy of the particle beam. In a diffraction embodiment, the interaction between the laser and particle beams is determined by the diffraction effect due to the apertures in the optical elements. In a transition embodiment, the interaction between the laser and particle beams is determined by the transition effect due to pieces of foil placed in the particle beam path.

Kimura, Wayne D. (Bellevue, WA); Romea, Richard D. (Seattle, WA); Steinhauer, Loren C. (Bothell, WA)

1998-01-01T23:59:59.000Z

334

A New Approach for Determining Optimal Air Compressor Location in A Manufacturing Facility to Increase Energy Efficiency  

E-Print Network [OSTI]

An approach is proposed to determine the optimal air compressor location in a manufacturing facility. The optimization strategy is based on an objective function that minimizes the total energy consumption of the air compressor -thereby decreasing...

Zahlan, J.; Avci, M.; Asfour, S.

2014-01-01T23:59:59.000Z

335

Use of Spatial Archetypes for Optimized Energy Performance  

E-Print Network [OSTI]

(American Society of Heating Refrigerating and Air-Conditioning Engineers) and geometric standards. INTRODUCTION Classification, Standardization, Archetypes Currently, it is quite evident that building simulations require specialized knowledge... was then designed optimally with respect to the chosen platform. Pareto Set Theory Nelson et al., also suggested a more generic formula for family product platforms as a multi- objective formulation: )(:min ],[ 21 pp xxx xf ppp K= (4) subject to...

Primikiri, E.; Kokkolaras, M.; Papalambros, P. Y.

2005-01-01T23:59:59.000Z

336

Improvement of the Energy Resolution via an Optimized Digital Signal Processing in GERDA Phase I  

E-Print Network [OSTI]

An optimized digital shaping filter has been developed for the GERDA experiment which searches for neutrinoless double beta decay in 76Ge. The GERDA Phase I energy calibration data have been reprocessed and an average improvement of 0.3 keV in energy resolution (FWHM) at the 76Ge Q value for 0\

Agostini, M; Bakalyarov, A M; Balata, M; Barabanov, I; Barros, N; Baudis, L; Bauer, C; Becerici-Schmidt, N; Bellotti, E; Belogurov, S; Belyaev, S T; Benato, G; Bettini, A; Bezrukov, L; Bode, T; Borowicz, D; Brudanin, V; Brugnera, R; Budjáš, D; Caldwell, A; Cattadori, C; Chernogorov, A; D'Andrea, V; Demidova, E V; di Vacri, A; Domula, A; Doroshkevich, E; Egorov, V; Falkenstein, R; Fedorova, O; Freund, K; Frodyma, N; Gangapshev, A; Garfagnini, A; Grabmayr, P; Gurentsov, V; Gusev, K; Hegai, A; Heisel, M; Hemmer, S; Heusser, G; Hofmann, W; Hult, M; Inzhechik, L V; Csáthy, J Janicskó; Jochum, J; Junker, M; Kazalov, V; Kihm, T; Kirpichnikov, I V; Kirsch, A; Klimenko, A; Knöpfle, K T; Kochetov, O; Kornoukhov, V N; Kuzminov, V V; Laubenstein, M; Lazzaro, A; Lebedev, V I; Lehnert, B; Liao, H Y; Lindner, M; Lippi, I; Lubashevskiy, A; Lubsandorzhiev, B; Lutter, G; Macolino, C; Majorovits, B; Maneschg, W; Medinaceli, E; Misiaszek, M; Moseev, P; Nemchenok, I; Palioselitis, D; Panas, K; Pandola, L; Pelczar, K; Pullia, A; Riboldi, S; Rumyantseva, N; Sada, C; Salathe, M; Schmitt, C; Schneider, B; Schönert, S; Schreiner, J; Schütz, A -K; Schulz, O; Schwingenheuer, B; Selivanenko, O; Shirchenko, M; Simgen, H; Smolnikov, A; Stanco, L; Stepaniuk, M; Ur, C A; Vanhoefer, L; Vasenko, A A; Veresnikova, A; von Sturm, K; Wagner, V; Walter, M; Wegmann, A; Wester, T; Wilsenach, H; Wojcik, M; Yanovich, E; Zavarise, P; Zhitnikov, I; Zhukov, S V; Zinatulina, D; Zuber, K; Zuzel, G

2015-01-01T23:59:59.000Z

337

Representing Energy Price Variability in Long-and Medium-term Hydropower Optimization  

E-Print Network [OSTI]

, 2002). The output of each hydropower plant is usually small relative to the overall energy market1 Representing Energy Price Variability in Long- and Medium- term Hydropower Optimization Marcelo A Department of Civil and Environmental Engineering, University of California, Davis, USA Journal of Water

Pasternack, Gregory B.

338

Optimal Design of Remote Terminal Unit (RTU) for Wireless SCADA System for Energy Management  

Science Journals Connector (OSTI)

For energy deficit countries, the design of Supervisory Control and Data Acquisition (SCADA) based energy management systems for optimal distribution is of high interest. Such design involves development of Remote Terminal Unit (RTU) which is considered ... Keywords: Field Programmable Gate Array (FPGA), Programmable Logic Controller (PLC), Remote Terminal Unit (RTU), Supervisory Control and Data Acquisition (SCADA), Tele-Control Interface (TCI), Wireless Communication

Muhammad Aamir; Javier Poncela; Muhammad Aslam Uqaili; B. S. Chowdhry; Nishat Ahmad Khan

2013-04-01T23:59:59.000Z

339

Division of IT Convergence Engineering Optimal Demand-Side Energy Management Under  

E-Print Network [OSTI]

Division of IT Convergence Engineering Optimal Demand-Side Energy Management Under Real-time Demand and wastage through better demand-side management and control is considered a key solution ingredient of appliance specific adapters. Designed and implemented GHS Modeled the demand-side energy management

Boutaba, Raouf

340

Sensor Network Lifetime Maximization Via Sensor Energy Balancing: Construction and Optimal Scheduling of Sensor Trees  

E-Print Network [OSTI]

in such a way that the total energy usage of the active sensor nodes in the tree is minimized. However whenSensor Network Lifetime Maximization Via Sensor Energy Balancing: Construction and Optimal Scheduling of Sensor Trees Ling Shi , Agostino Capponi , Karl H. Johansson and Richard M. Murray Abstract

Johansson, Karl Henrik

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Optimized Pump Systems Save Coal Preparation Plant Money and Energy  

Broader source: Energy.gov [DOE]

This case study describes how Peabody Holding Company was able to improve the performance of a coal slurry pumping system at its Randolph Coal Preparation plant. Using a systematic approach, three energy-saving opportunities were identified involving the motor, belt drive, and pump components of the pumping system. The modifications saved 87,184 kWh of electricity, equivalent to $5,231 in annual energy cost savings, and overall energy consumption of the pumping system decreased by approximately 15 percent.

342

Determining Optimal Locations for New Wind Energy Development in Iowa.  

E-Print Network [OSTI]

??The purpose of this research is to generate the most accurate model possible for predicting locations most suitable for new wind energy development using a… (more)

Mann, David

2011-01-01T23:59:59.000Z

343

Optimization Online - Radio Planning of Energy-Aware Cellular ...  

E-Print Network [OSTI]

Nov 3, 2010 ... Some energy-aware models and approaches have already been ... Keywords: green networking, wireless, network design, coverage, network ...

Silvia Boiardi

2010-11-03T23:59:59.000Z

344

Globally Resource-Optimized and Energy-Efficient Networks (“GREEN”)  

Science Journals Connector (OSTI)

The explosive development of the ICT (Information and Communication Technology) Industry has emerged as one of the major sources of world energy consumption. In ...

Niu, Zhisheng

345

dlCC Opt: Optimization Software for Renewable Energy Projects...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

indicators of project opportunities. Many existing programs require the user to enter the size (kW) of the renewable energy system in order to start calculations. However,...

346

Hybrid renewable energy systems optimization based on artificial intelligence.  

E-Print Network [OSTI]

??In remote regions, electric energy is usually supplied by diesel generators for their reliability, low installation costs, ease of starting, compact power density and portability.… (more)

Berrazouane, Sofiane

2014-01-01T23:59:59.000Z

347

Optimal investment and scheduling of distributed energy resources with uncertainty in electric vehicles driving schedules  

SciTech Connect (OSTI)

The large scale penetration of electric vehicles (EVs) will introduce technical challenges to the distribution grid, but also carries the potential for vehicle-to-grid services. Namely, if available in large enough numbers, EVs can be used as a distributed energy resource (DER) and their presence can influence optimal DER investment and scheduling decisions in microgrids. In this work, a novel EV fleet aggregator model is introduced in a stochastic formulation of DER-CAM [1], an optimization tool used to address DER investment and scheduling problems. This is used to assess the impact of EV interconnections on optimal DER solutions considering uncertainty in EV driving schedules. Optimization results indicate that EVs can have a significant impact on DER investments, particularly if considering short payback periods. Furthermore, results suggest that uncertainty in driving schedules carries little significance to total energy costs, which is corroborated by results obtained using the stochastic formulation of the problem.

Center for Energy and Innovative Technologies; NEC Laboratories America Inc.; Cardoso, Goncalo; Stadler, Michael; Bozchalui, Mohammed C.; Sharma, Ratnesh; Marnay, Chris; Barbosa-Povoa, Ana; Ferrao, Paulo

2013-10-27T23:59:59.000Z

348

"Are Distributed Energy Systems Optimal In India?" Narayanan Komerath  

E-Print Network [OSTI]

efficiency, their effectiveness as the elements of a national energy architecture is obvious. The point is to understand the key numbers and issues of the Indian primary energy market, the reasons and constraints partial "miracle cure" that may be embraced by a large part of the Indian population. ARE DISTRIBUTED

349

Building Energy Optimization Analysis Method (BEopt)- Building America Top Innovation  

Broader source: Energy.gov [DOE]

This Building America Innovations profile describes the DOE-sponsored BEopt software, which ensures a consistent analysis platform and accurate simulations. Many BEopt algorithms have been adopted by private-sector HERS software tools that have helped improve the energy efficiency of tens-of-thousands of ENERGY STAR-certified homes.

350

Micro-grid energy dispatch optimization and predictive control algorithms; A UC Irvine case study  

Science Journals Connector (OSTI)

Abstract Distributed power and energy resources are now being used to meet the combined electric power, heating, and cooling demands of many buildings. The addition of on-site renewables and their accompanying intermittency and non-coincidence requires even greater dynamic performance from the distributed power and energy system. Load following generators, energy storage devices, and predictive energy management are increasingly important to achieve the simultaneous goals of increased efficiency, reduced emissions, and sustainable economics. This paper presents two optimization strategies for the dispatch of a multi-chiller cooling plant with cold-water thermal storage. The optimizations aim to reduce both costs and emissions while considering real operational constraints of a plant. The UC Irvine campus micro-grid operation between January 2009 and December 2013 serves as a case study for how improved utilization of energy storage can buffer demand transients, reduce costs and improve plant efficiency. A predictive control strategy which forecasts campus demands from weather predictions, optimizes the plant dispatch, and applies feedback control to modify the plant dispatch in real-time is compared to best-practices manual operation. The dispatch optimization and predictive control algorithms are shown to reduce annual utility bill costs by 12.0%, net energy costs by 3.61%, and improve energy efficiency by 1.56%.

Dustin McLarty; Carles Civit Sabate; Jack Brouwer; Faryar Jabbari

2015-01-01T23:59:59.000Z

351

NRELs Renewable Energy Optimization (REopt) Tool: Models & Tools (Fact Sheet), NREL (National Renewable Energy Laboratory)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

m o d e l s & t o o l s NREL's Renewable Energy Optimization (REopt) Tool NREL's REopt tool is an early screening tool that identifies and prioritizes renewable energy (RE) projects at a single site, or across a portfolio of geographically dispersed sites, to meet agency goals. Key Features * Optimization. REopt considers RE resources, energy rates, and utility policies to identify the most cost-effective technologies to meet energy goals. * Integration. REopt simultaneously models the complex hourly interactions of multiple thermal and electric RE technologies, along with conventional energy sources. * Low cost. REopt provides a quick and low-cost method to identify the most economically and technically viable technologies for further study.

352

Reducing Building Energy Costs Using Optimized Operation Strategies for Constant Volume Air Handling Systems  

E-Print Network [OSTI]

SDCVP 67.380 $153.200 $41.800 $195.000 $2.89 measured energy consumption for each building. The horizontal axis is the ambient temperature. The venical axis is the average daily energy consumption in MMBtulhr. Figure 5 compares the predicted...REDUCING BUILDING ENERGY COSTS USING OPTIMIZED OPERATION STRATEGIES FOR CONSTANT VOLUME AIR HANDLING SYSTEMS Mingsheng Liu, her Atha, Agarni Reddy Ed White David Claridge and Jeff Haberl Department of Physical Plant Texas A&M University...

Liu, M.; Athar, A.; Reddy, A.; Claridge, D. E.; Haberl, J. S.; White, E.

1994-01-01T23:59:59.000Z

353

IEEE TRANS. AUTOM. CONTROL, SPECIAL ISSUE ON WIRELESS SENSOR AND ACTUATOR NETWORKS 1 Energy Optimized Topologies for Distributed  

E-Print Network [OSTI]

. We formulate the combinatorial optimization problem of selecting such a minimal energy tree that yield energy efficient bidirectional span- ning trees and establish associated bounds on the optimalIEEE TRANS. AUTOM. CONTROL, SPECIAL ISSUE ON WIRELESS SENSOR AND ACTUATOR NETWORKS 1 Energy

354

Optimal design and operation of energy polygeneration systems  

E-Print Network [OSTI]

Polygeneration is a concept where multiple energy products are generated in a single plant by tightly integrating multiple processes into one system. Compared to conventional single-product systems, polygeneration systems ...

Chen, Yang, Ph. D. Massachusetts Institute of Technology. Department of Chemical Engineering

2013-01-01T23:59:59.000Z

355

Kansas City Power and Light- Energy Optimizer Programmable Thermostat Program  

Broader source: Energy.gov [DOE]

Kansas City Power and Light (KCP&L) offers a free Honeywell programmable thermostat, worth $300, and free installation to qualifying customers to manage energy usage. Only residential and small...

356

Applications of Optimal Building Energy System Selection and Operation  

E-Print Network [OSTI]

direct control of the solar-assisted heating ventilation and5]. And 4. , the solar-assisted heating ventilation and airPerformance of a Solar-Thermal-Assisted HVAC System,” Energy

Marnay, Chris

2014-01-01T23:59:59.000Z

357

Optimization of Oxygen Purity for Coal Conversion Energy Reduction  

E-Print Network [OSTI]

The conversion of coal into gaseous and liquid fuels and chemical feedstock will require large quantities of oxygen. This oxygen will be produced in large multi-train air separation plants which will consume about 350 kilowatt hours of energy...

Baker, C. R.; Pike, R. A.

1982-01-01T23:59:59.000Z

358

Process Control on Workplace Level - User Comfort Energy Optimalization  

E-Print Network [OSTI]

Utility building developments in the near future face two mayor challenges. These challenges are closely related. The first one is the pressure to reduce the amount of energy needed to acclimatize the building and the second is to increase...

Verhaart, J.; Zeiler, W.; Boxem, G.

2013-01-01T23:59:59.000Z

359

Optimizing Process Loads in Industrial Cogeneration Energy Systems  

E-Print Network [OSTI]

applied to power generation and industrial cogeneration are extended to solving this trigeneration problem where the optimum dispatch of the final load devices (i.e. compressors, fans, pumps, etc.) are an integral part of the total energy system...-04-29 Proceedings from the Seventeenth Industrial Energy Technology Conference, Houston, TX, April 5-6, 1995 optimum dispatch solutions, and an iterative simultaneous solution of the integrated system is required. The solution dependency arises when the end use...

Ahner, D. J.; Babson, P. E.

360

Design and optimization of solid thermal energy storage modules for solar thermal power plant applications  

Science Journals Connector (OSTI)

Abstract Solid sensible heat storage is an attractive option for high-temperature storage applications in terms of investment and maintenance costs. Typical solid thermal energy storage systems use a heat transfer fluid to exchange heat as the fluid flows through a tubular heat exchanger embedded in the solid storage material. The modified lumped capacitance method is used with an effective heat transfer coefficient in a simplified analysis of the heat transfer in solid thermal energy storage systems for a solid cylindrical heat storage unit. The analytical solution was found using the Laplace transform method. The solution was then used to develop an optimization method for designing solid storage modules which uses the system requirements (released energy and fluid outlet temperature) as the constraint conditions and the storage module cost as the objective function for the optimization. Optimized results are then given for many kinds of system configurations.

Yongfang Jian; Quentin Falcoz; Pierre Neveu; Fengwu Bai; Yan Wang; Zhifeng Wang

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Energy enhancement of proton acceleration in combinational radiation pressure and bubble by optimizing plasma density  

SciTech Connect (OSTI)

The combinational laser radiation pressure and plasma bubble fields to accelerate protons are researched through theoretical analysis and numerical simulations. The dephasing length of the accelerated protons bunch in the front of the bubble and the density gradient effect of background plasma on the accelerating phase are analyzed in detail theoretically. The radiation damping effect on the accelerated protons energy is also considered. And it is demonstrated by two-dimensional particle-in-cell simulations that the protons bunch energy can be increased by using the background plasma with negative density gradient. However, radiation damping makes the maximal energy of the accelerated protons a little reduction.

Bake, Muhammad Ali; Xie Baisong [Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, Beijing Normal University, Beijing 100875 (China); College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875 (China); Shan Zhang [Department of Mathematics and Physics, Shijiazhuang Tiedao University, Shijiazhuang 050043 (China); Hong Xueren [College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875 (China); College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070 (China); Wang Hongyu [Department of Physics, Anshan Normal University, Anshan 114005 (China); Shanghai Bright-Tech Information Technology Co. Ltd, Shanghai 200136 (China)

2012-08-15T23:59:59.000Z

362

Optimizing Radiation Protection of the Public and the Environment at the Department of Energy  

Broader source: Energy.gov [DOE]

Optimizing Radiation Protection of the Public and the Environment at the Department of Energy (DOE), ALARA at DOE Derek Favret*, U.S. Department of Energy ; Edward Regnier, U.S. Department of Energy; Andrew Wallo, U.S. Department of Energy Abstract: The Department of Energy is drafting a handbook to assist program and field offices in understanding what is necessary and acceptable for implementing the As Low As Reasonably Achievable (ALARA) provisions of DOE Order 458.1, Radiation Protection of the Public and Environment. The handbook identifies the goals, requirements and issues that should be addressed in an ALARA process and reviews past case studies from throughout the department to further assist in implementing this process. Utilization of the ALARA process ensures optimization techniques are integrated into the design and analyses of programmatic options to support DOE’s diverse missions and protect the public and the environment.

363

Laser Inertial Fusion-based Energy (LIFE) - Developing Manufacturing Technology for low cost and high volume fusion fuel is critical to our future energy needs  

Science Journals Connector (OSTI)

At the heart of the LIFE power plant is a fuel capsule containing a tiny amount of solid deuterium-tritium (DT) which is compressed to high density by lasers, and then a short-pulse laser beam delivers energy to ...

K. Carlisle; R. R. Miles

2010-01-01T23:59:59.000Z

364

Active manipulation of the spatial energy distribution of laser-accelerated proton beams  

Science Journals Connector (OSTI)

The spatial energy distributions of beams of protons accelerated by ultrahigh intensity (>1019W?cm2) picosecond laser pulse interactions with thin foil targets are investigated. Using separate, low intensity (<1013W?cm2) nanosecond laser pulses, focused onto the front surface of the target foil prior to the arrival of the high intensity pulse, it is demonstrated that the proton beam profile can be actively manipulated. In particular, results obtained with an annular intensity distribution at the focus of the low intensity beam are presented, showing smooth proton beams with a sharp circular boundary at all energies, which represents a significant improvement in the beam quality compared to irradiation with the picosecond beam alone.

D. C. Carroll; P. McKenna; O. Lundh; F. Lindau; C.-G. Wahlström; S. Bandyopadhyay; D. Pepler; D. Neely; S. Kar; P. T. Simpson; K. Markey; M. Zepf; C. Bellei; R. G. Evans; R. Redaelli; D. Batani; M. H. Xu; Y. T. Li

2007-12-12T23:59:59.000Z

365

Lasing of ambient air with microjoule pulse energy pumped by a multi terawatt IR femtosecond laser  

E-Print Network [OSTI]

We report on the lasing action of atmospheric air pumped by an 800 nm femtosecond laser pulse with peak power up to 4 TW. Lasing emission at 428 nm increases rapidly over a small range of pump laser power, followed by saturation above ~ 1.5 TW. The maximum lasing pulse energy is measured to be 2.6 uJ corresponding to an emission power in the MW range, while a maximum conversion efficiency of is measured at moderate pump pulse energy. The optical gain inside the filament plasma is estimated to be excess of 0.7/cm. The lasing emission shows a doughnut profile, reflecting the spatial distribution of the pump-generated white-light continuum that acts as a seed for the lasing. We attribute the pronounced saturation to the defocusing of the seed in the plasma amplifying region and to the saturation of the seed intensity.

Point, Guillaume; Brelet, Yohann; Mitryukovskiy, Sergey; Ding, Pengji; Houard, Aurélien; Mysyrowicz, André

2014-01-01T23:59:59.000Z

366

Clincial Experience on Mix HeNe and I R Low Energy Laser — A Review of 404 Cases  

Science Journals Connector (OSTI)

Since 1971 Mester(31) had reported that he observed biostimulative effect of low energy laser beam. Thereafter, plenty of studies had been performed which included experimental studies on animals(7,14,16-,20,2...

Peter Hasan; Agus Rijadi; Santoso Purnomo…

1988-01-01T23:59:59.000Z

367

Experimental investigations to optimize the utilization of energy resources  

Science Journals Connector (OSTI)

In world more than 65% of non-renewable fuels are consumed by thermal, gas, nuclear, diesel power plants and process industries. They emit huge amount of pollutants and skew up large quantities of ash in to environment causing pollution and lead to adverse ... Keywords: energy, environment, management, resources, safety

Gurumurthy Vijayan Iyer; Nikos E. Mastorakis

2006-06-01T23:59:59.000Z

368

Prospects for Combining Energy and Environmental Objectives in Hydropower Optimization Brennan T. Smith and Henriette I. Jager  

E-Print Network [OSTI]

1 Prospects for Combining Energy and Environmental Objectives in Hydropower Optimization Brennan T, we review studies that derived rules for hydropower operation by solving optimization problems driven be compatible with hydropower optimization. Given the increasing value placed on the ecological sustainability

Jager, Henriette I.

369

Iodine monofluoride discharge laser investigation  

SciTech Connect (OSTI)

The results of an experimental investigation to improve the performance of a discharge-pumped iodine monofluoride laser are reported. Lasing was observed at 478.7, 484.7, 490.7, and 496.5 nm. Electrical measurements of the discharge characteristics permitted the energy flow in the circuit to be followed and laser efficiencies to be calculated. Parametric studies of gas mixtures were carried out. By optimizing several parameters, single-pulse lasing energies greater than 50 mJ were obtained.

Harris, D.G.; Blauer, J.A.; Hurlock, S.C. (Rockwell International, Rocketdyne Division, Canoga Park, CA (USA))

1990-10-15T23:59:59.000Z

370

A new energy optimizing control strategy for switched reluctance motors  

SciTech Connect (OSTI)

This paper describes a new and machine-independent method to minimize the energy consumption of a speed controlled Switched Reluctance Motor (SRM). The control strategy is to vary the duty cycle of the applied dc voltage in order to obtain the desired speed quickly and when operating in steady-state vary the turn-on angle ({alpha}{sub on}) of the phase voltage to minimize the energy consumption. The power flow is measured in the dc-link and used to control the turn-on angle. Simulations carried out on a three-phase 6/4 pole SRM justify the algorithm and the physical implementation in a Siemens SAB 80C517A microcontroller is described. Measurements on two different load systems show it is possible to minimize the energy consumption on-line in a speed controlled Switched Reluctance Motor without losing the dynamic performance. A comparison with an ordinary mode-shift controlled SRM shows more than an 8% increase in overall efficiency for some operation points. The algorithm is fully applicable to other Switched Reluctance Motors at other power levels or with other pole configurations.

Kjaer, P.C. [Univ. of Glasgow (United Kingdom)] [Univ. of Glasgow (United Kingdom); Nielsen, P. [Danfoss A/S, Graasten (Denmark). Transmission Div.] [Danfoss A/S, Graasten (Denmark). Transmission Div.; Andersen, L. [Nilfisk A/S, Broendby (Denmark)] [Nilfisk A/S, Broendby (Denmark); Blaabjerg, F. [Aalborg Univ. (Denmark)] [Aalborg Univ. (Denmark)

1995-09-01T23:59:59.000Z

371

Collisionless absorption, hot electron generation, and energy scaling in intense laser-target interaction  

E-Print Network [OSTI]

Among the various attempts to understand collisionless absorption of intense ultrashort laser pulses a variety of models has been invented to describe the laser beam target interaction. In terms of basic physics collisionless absorption is understood now as the interplay of the oscillating laser field with the space charge field produced in the plasma. A first approach to this idea is realized in Brunel's model the essence of which consists in the formation of an oscillating charge cloud in the vacuum in front of the target. The investigation of statistical ensembles of orbits shows that the absorption process is localized at the ion-vacuum interface and in the skin layer: Single electrons enter into resonance with the laser field thereby undergoing a phase shift which causes orbit crossing and braking of Brunel's laminar flow. This anharmonic resonance acts like an attractor for the electrons and leads to the formation of a Maxwellian tail in the electron energy spectrum. Most remarkable results of our inves...

Liseykina, T; Murakami, M

2014-01-01T23:59:59.000Z

372

1104 OPTICS LETTERS / Vol. 25, No. 15 / August 1, 2000 Selective delivery of laser energy to biological tissue  

E-Print Network [OSTI]

1104 OPTICS LETTERS / Vol. 25, No. 15 / August 1, 2000 Selective delivery of laser energy and were cho- sen as an example.4,5 Optical energy is delivered into tissue through a contacting optical but below the critical angle for high-index tissues, thus allowing optical energy to be coupled efficiently

Massachusetts at Lowell, University of

373

“Energy Tower” combined with pumped storage and desalination: Optimal design and analysis  

Science Journals Connector (OSTI)

The “Energy Tower” (ET) is a power plant project which uses hot dry air and seawater to produce electricity. An optimized design of a system that is a combination of an ET, pumped storage and seawater desalination plant is considered. A model set covering each subsystem, and results of the optimized design for a project in the area of Eilat are presented. The additional benefit from combining the systems comes from an efficient use of the energy in the brine water coming from the desalination process, and from using pumped storage in an unconventional way. The benefits of the combined system lead to an increase of 14% in the annual net profit, compared to the sum of profits from optimally designed stand-alone systems.

E. Omer; R. Guetta; I. Ioslovich; P.O. Gutman; M. Borshchevsky

2008-01-01T23:59:59.000Z

374

Origin of protons accelerated by an intense laser and the dependence of their energy on the plasma density  

Science Journals Connector (OSTI)

We study the high-energy (1–4 MeV) proton production from a slab plasma irradiated by a ultrashort high-power laser. In our 2.5-dimensional particle-in-cell simulations, a p-polarized laser beam of 1.6×1019 W/cm2, 300 fs, ?L=1.053 ?m, illuminates a slab plasma normally; the slab plasma consists of a hydrogen plasma, and the target plasma thickness and the laser spot size are 2.5?L and 5?L, respectively. The simulation results show that an emitted proton energy depends on the slab plasma density, and three kinds of high-energy proton beams are generated at the target plasma surfaces: one kind of the proton beams is produced at the laser-illuminated target surface and accelerated to the same laser-incident side. The second is generated at the target surface opposite to the laser-illuminated target surface and is accelerated outward on the same side. The third is generated at the laser-illuminated target surface and accelerated to the opposite side while passing through the target plasma. The simulations also show a mechanism of proton accelerations. In an overdense plasma, laser energy goes to energies of hot electrons and magnetic fields in part; the electrons oscillate around the slab plasma so that a static electric field is generated and consequently protons are extracted. The magnetic field generated in the slab plasma exists longer and heats up the plasma electrons to sustain the static electric field even after the laser termination.

Takashi Nakamura and Shigeo Kawata

2003-02-06T23:59:59.000Z

375

Multiobjective Optimization of Pharmacophore Hypotheses: Bias Toward Low-Energy Conformations  

Science Journals Connector (OSTI)

Multiobjective Optimization of Pharmacophore Hypotheses: Bias Toward Low-Energy Conformations ... Our aim, therefore, is to generate a series of plausible pharmacophore hypotheses that represent different trade-offs in the goodness of the alignment and the conformational energies of the molecules. ... The DHFR molecules each have a pair of fused aromatic rings which contain a constellation of two hydrogen-bond donors (D1, D2 in Figure 2) and two acceptors (A1, A2). ...

Eleanor J. Gardiner; David A. Cosgrove; Robin Taylor; Valerie J. Gillet

2009-11-12T23:59:59.000Z

376

Optimal Sizing of Energy Storage and Photovoltaic Power Systems for Demand Charge Mitigation (Poster)  

SciTech Connect (OSTI)

Commercial facility utility bills are often a strong function of demand charges -- a fee proportional to peak power demand rather than total energy consumed. In some instances, demand charges can constitute more than 50% of a commercial customer's monthly electricity cost. While installation of behind-the-meter solar power generation decreases energy costs, its variability makes it likely to leave the peak load -- and thereby demand charges -- unaffected. This then makes demand charges an even larger fraction of remaining electricity costs. Adding controllable behind-the-meter energy storage can more predictably affect building peak demand, thus reducing electricity costs. Due to the high cost of energy storage technology, the size and operation of an energy storage system providing demand charge management (DCM) service must be optimized to yield a positive return on investment (ROI). The peak demand reduction achievable with an energy storage system depends heavily on a facility's load profile, so the optimal configuration will be specific to both the customer and the amount of installed solar power capacity. We explore the sensitivity of DCM value to the power and energy levels of installed solar power and energy storage systems. An optimal peak load reduction control algorithm for energy storage systems will be introduced and applied to historic solar power data and meter load data from multiple facilities for a broad range of energy storage system configurations. For each scenario, the peak load reduction and electricity cost savings will be computed. From this, we will identify a favorable energy storage system configuration that maximizes ROI.

Neubauer, J.; Simpson, M.

2013-10-01T23:59:59.000Z

377

Maximizing Lifetime in an Energy Constrained Wireless Sensor Array Using Team Optimization  

E-Print Network [OSTI]

Maximizing Lifetime in an Energy Constrained Wireless Sensor Array Using Team Optimization or using intermediate hop nodes. For a given node constellation, there ex- ist many wireless connection trees to do this. For a known node constellation, the maximum lifetime of a single tree is equal

Arabshahi, Payman

378

Optimal Design and Management of a Smart Residential PV and Energy Storage System  

E-Print Network [OSTI]

. However, the home owners are not yet convinced of the saving cost benefits of this technologyOptimal Design and Management of a Smart Residential PV and Energy Storage System Di Zhu, Yanzhi University, Korea {dizhu, yanzhiwa, pedram}@usc.edu, naehyuck@elpl.snu.ac.kr Abstract-- Solar photovoltaic

Pedram, Massoud

379

CAD Technique for Microwave Chemistry Reactors with Energy Efficiency Optimized for Different Reactants  

E-Print Network [OSTI]

CAD Technique for Microwave Chemistry Reactors with Energy Efficiency Optimized for Different in experimental development of large- scale and highly-productive reactors. This paper proposes to address this issue by developing microwave chemistry reactors as microwave systems, rather than as black

Yakovlev, Vadim

380

PASI 2011: Process Modeling and Optimization for Energy and Sustainability Mineral Process Design for  

E-Print Network [OSTI]

PASI 2011 PASI 2011: Process Modeling and Optimization for Energy and Sustainability Mineral, high population growth and urbanization, both key metals consumption and GDP are expected to grow the environmental impact, both in per tonne of product and on total amount of emissions and reduction. #12

Grossmann, Ignacio E.

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Models for Optimization of Energy Consumption of Pumps in a Wastewater Processing Plant  

E-Print Network [OSTI]

Models for Optimization of Energy Consumption of Pumps in a Wastewater Processing Plant Zijun Zhang in the wastewater preliminary treatment process is discussed. Data- mining algorithms are utilized to develop pump performance models based on industrial data collected at a municipal wastewater processing plant

Kusiak, Andrew

382

Optimal Indoor Air Temperature Considering Energy Savings and Thermal Comfort in the Shanghai Area  

E-Print Network [OSTI]

as possible in winter. Meanwhile, indoor thermal comfort should be considered. This paper will establish the optimal indoor air temperature for an air-conditioning system aiming at both energy savings and thermal comfort in the Shanghai area, based on the PMV...

Yao, Y.; Lian, Z.; Hou, Z.; Liu, W.

2006-01-01T23:59:59.000Z

383

Design optimization of a fuzzy distributed generation (DG) system with multiple renewable energy sources  

Science Journals Connector (OSTI)

The global rise in energy demands brings major obstacles to many energy organizations in providing adequate energy supply. Hence many techniques to generate cost effective reliable and environmentally friendly alternative energy source are being explored. One such method is the integration of photovoltaic cells wind turbine generators and fuel-based generators included with storage batteries. This sort of power systems are known as distributed generation (DG) power system. However the application of DG power systems raise certain issues such as cost effectiveness environmental impact and reliability. The modelling as well as the optimization of this DG power system was successfully performed in the previous work using Particle Swarm Optimization (PSO). The central idea of that work was to minimize cost minimize emissions and maximize reliability (multi-objective (MO) setting) with respect to the power balance and design requirements. In this work we introduce a fuzzy model that takes into account the uncertain nature of certain variables in the DG system which are dependent on the weather conditions (such as; the insolation and wind speed profiles). The MO optimization in a fuzzy environment was performed by applying the Hopfield Recurrent Neural Network (HNN). Analysis on the optimized results was then carried out.

2012-01-01T23:59:59.000Z

384

Regionalized LCA-Based Optimization of Building Energy Supply: Method and Case Study for a Swiss Municipality  

Science Journals Connector (OSTI)

Regionalized LCA-Based Optimization of Building Energy Supply: Method and Case Study for a Swiss Municipality ... This paper presents a regionalized LCA-based multiobjective optimization model of building energy demand and supply for the case of a Swiss municipality for the minimization of greenhouse gas emissions and particulate matter formation. ... A suitable method for such analyses is life cycle assessment (LCA). ...

Dominik Saner; Carl Vadenbo; Bernhard Steubing; Stefanie Hellweg

2014-05-27T23:59:59.000Z

385

Utility Accrual Real-Time Scheduling with Energy Bounds In this paper, we consider timeliness and energy optimization in battery-powered, dynamic  

E-Print Network [OSTI]

. An important technique used for optimizing the energy consumption of real-time embedded systems is dynamic in the physical world). Further, they are energy-critical, as they must operate on battery, with finite energy and minimizing the system's energy consumption, and not just the CPU's energy consumption. Moreover, such systems

Ravindran, Binoy

386

BEopt(TM) Software for Building Energy Optimization: Features and Capabilities  

SciTech Connect (OSTI)

BEopt is a computer program designed to find optimal building designs along the path to ZNE. A user selects from predefined options in various categories to specify options to be considered in the optimization. Energy savings are calculated relative to a reference. The reference can be either a user-defined base-case building or a climate-specific Building America Benchmark building automatically generated by BEopt. The user can also review and modify detailed information on all available options in a linked options library spreadsheet. BEopt calls the DOE2 and TRNSYS simulation engines and uses a sequential search technique to automate the process of identifying optimal building designs along the path to ZNE. BEopt finds these optimal and near-optimal designs based on discrete building options reflecting realistic construction options. BEopt handles special situations with positive or negative interactions between options in different categories. The BEopt software includes a results browser that allows the user to navigate among different design points and retrieve detailed results regarding energy end-use and option costs in different categories. Multiple cases, based on a selected parameter such as climate, can be included in a BEopt project file for comparative purposes.

Christensen, C.; Anderson, R.; Horowitz, S.; Courtney, A.; Spencer, J.

2006-08-01T23:59:59.000Z

387

A system-level cost-of-energy wind farm layout optimization with landowner modeling  

SciTech Connect (OSTI)

This work applies an enhanced levelized wind farm cost model, including landowner remittance fees, to determine optimal turbine placements under three landowner participation scenarios and two land-plot shapes. Instead of assuming a continuous piece of land is available for the wind farm construction, as in most layout optimizations, the problem formulation represents landowner participation scenarios as a binary string variable, along with the number of turbines. The cost parameters and model are a combination of models from the National Renewable Energy Laboratory (NREL), Lawrence Berkeley National Laboratory, and Windustiy. The system-level cost-of-energy (COE) optimization model is also tested under two land-plot shapes: equally-sized square land plots and unequal rectangle land plots. The optimal COEs results are compared to actual COE data and found to be realistic. The results show that landowner remittances account for approximately 10% of farm operating costs across all cases. Irregular land-plot shapes are easily handled by the model. We find that larger land plots do not necessarily receive higher remittance fees. The model can help site developers identify the most crucial land plots for project success and the optimal positions of turbines, with realistic estimates of costs and profitability. (C) 2013 Elsevier Ltd. All rights reserved.

Chen, Le [Ames Laboratory; MacDonald, Erin [Ames Laboratory

2013-10-01T23:59:59.000Z

388

Laser Systems for Orbital Debris Removal  

SciTech Connect (OSTI)

The use of a ground based laser for space debris cleaning was investigated by the ORION project in 1996. Since that study the greatest technological advance in the development of high energy pulsed laser systems has taken place within the NIF project at LLNL. The proposed next laser system to follow the NIF at LLNL will be a high rep rate version of the NIF based on diode-pumping rather than flashlamp excitation; the so called 'LIFE' laser system. Because a single 'LIFE' beamline could be built up in a few year time frame, and has performance characteristics relevant to the space debris clearing problem, such a beamline could enable a near term demonstration of space debris cleaning. Moreover, the specifics of debris cleaning make it possible to simplify the LIFE laser beyond what is required for a fusion drive laser, and so substantially reduce its cost. Starting with the requirements for laser intensity on the target, and then considering beam delivery, we will flow back the laser requirements needed for space debris cleaning. Using these derived requirements we will then optimize the pulse duration, the operational regime, and the output pulse energy of the laser with a focus of simplifying its overall design. Anticipated simplifications include operation in the heat capacity regime, eliminating cooling requirements on the laser gain slabs, and relaxing B-integral and birefrigence requirements.

Rubenchik, A M; Barty, C P; Beach, R J; Erlandson, A C; Caird, J A

2010-02-05T23:59:59.000Z

389

Application of multi-subband self-consistent energy balance method to terahertz quantum cascade lasers  

Science Journals Connector (OSTI)

We present simulation results for two resonant phonon terahertz quantum cascade lasers using a self-consistent energy balance model, which determines the electron temperature for each conduction subband. These temperatures, along with the electron populations and scattering rates, are determined in a manner similar to previously published models. However, the presented model is able to converge through the use of an algorithm that appears to be robust. The predicted individual subband electron temperatures, population densities and scattering rates are compared to previously published Monte Carlo and experimental studies for both lasers, where subband temperature variations were observed. These quantities were chosen since they provided the only comparison to modeling results from other studies.

Philip Slingerland; Christopher Baird; Robert H Giles

2012-01-01T23:59:59.000Z

390

Compliance of SLAC_s Laser Safety Program with OSHA Requirements for the Control of Hazardous Energy  

SciTech Connect (OSTI)

SLAC's COHE program requires compliance with OSHA Regulation 29CFR1910.147, 'The control of hazardous energy (lockout/tagout)'. This regulation specifies lockout/tagout requirements during service and maintenance of equipment in which the unexpected energization or start up of the equipment, or release of stored energy, could cause injury to workers. Class 3B and Class 4 laser radiation must be considered as hazardous energy (as well as electrical energy in associated equipment, and other non-beam energy hazards) in laser facilities, and therefore requires careful COHE consideration. This paper describes how COHE is achieved at SLAC to protect workers against unexpected Class 3B or Class 4 laser radiation, independent of whether the mode of operation is normal, service, or maintenance.

Woods, Michael; /SLAC

2009-01-15T23:59:59.000Z

391

Beam Line Design and Beam Physics Study of Energy Recovery Linac Free Electron Laser at Peking University  

SciTech Connect (OSTI)

Energy recovering linac (ERL) offers an attractive alternative for generating intense beams of charged particles by approaching the operational efficiency of a storage ring while maintaining the superior beam quality typical of a linear accelerator. In ERLs, the decelerated beam cancels the beam loading effects of the accelerated beam with high repetition rate. Therefore, ERLs can, in principle, accelerate very high average currents with only modest amounts of RF power. So the efficiency of RF power to beam is much higher. Furthermore, the energy of beam to dump is lower, so it will reduce dump radiation. With the successful experiments in large maximum-to-injection energy ratio up to 51:1 and high power FEL up to 14kW, the use of ERL, especially combining with superconducting RF technology, provides a potentially powerful new paradigm for generation of the charged particle beams used in MW FEL, synchrotron radiation sources, high-energy electron cooling devices and so on. The 3+1/2 DC-SC photo injector and two 9cell TESLA superconducting cavity for IR SASE FEL in PKU provides a good platform to achieve high average FEL with Energy Recovery. The work of this thesis is on Beam line design and Beam dynamics study of Energy Recovery Linac Free Electron Laser for Peking University. It is the upgrade of PKU facility, which is under construction. With ERL, this facility can work in CW mode, so it can operate high average beam current without RF power constraint in main linac and generate high average FEL power. Moreover, it provides a test facility to study the key technology in ERL. System parameters are optimized for PKU ERL-FEL. The oscillation FEL output power is studied with different bunch charge, transverse emittance, bunch length and energy spread. The theory of optimal RF power and Q{sub ext} with ERL and without ERL is analyzed and applied to PKU injector and linac including microphonic effect. pace charge effect in the injector and merger is studied for beam energy at ~5MeV. Simulation shows that in the 3+1/2 DC- C injector, there is a region the beam could be over focused by RF electromagnetic field and the transverse emittance in the transport line up to linac will increase instantly due to over focusing. In order to eliminate this effect on beam emittance, several solutions are investigated to avoid over focusing. This result is very important for beam loading experiment for low bunch charge operation. Meanwhile, different merger structures are compared in terms of error sensitivity and emittance increase with space charge effect. In recirculation beam line, a new symmetric 180{degree} arc structure is designed. It fulfills the achromatic condition and adjustable bunch compression. These two parameters are controlled by different Quads knob. With this novel structure, the recirculation lattice can achieve path length adjustment, bunch compression and decompression in a large range. With beamline error, the beam central orbit will deviate from the designed trajectory. An orbit correction system is optimized, which balances between cost and performance of orbit after correction at design level. Different methods are used to estimate its robustness. The BBU instability, especially multi-pass BBU imposed a potentially severe limitation to the average current that can be accelerated in an ERL. Simulation gives the harmful HOMs and predicts that the threshold average current in this machine is much higher than the possible operation current. This work is based on the existing facility in PKU, so it provides guidelines for the facility operation and upgrade in the future. The theoretical analysis of ERL requirement and FEL requirement on beam transport line and beam property paves the way for future ERL research.

Guimei Wang

2011-12-31T23:59:59.000Z

392

Influence and optimization of the electrodes position in a piezoelectric energy harvesting flag  

E-Print Network [OSTI]

Fluttering piezoelectric plates may harvest energy from a fluid flow by converting the plate's mechanical deformation into electric energy in an output circuit. This work focuses on the influence of the arrangement of the piezoelectric electrodes along the plate's surface on the energy harvesting efficiency of the system, using a combination of experiments and numerical simulations. A weakly non-linear model of a plate in axial flow, equipped with a discrete number of piezoelectric patches is derived and confronted to experimental results. Numerical simulations are then used to optimize the position and dimensions of the piezoelectric electrodes. These optimal configurations can be understood physically in the limit of small and large electromechanical coupling.

Piñeirua, Miguel; Michelin, Sébastien

2015-01-01T23:59:59.000Z

393

Assessment of Cost-optimal Energy Performance Requirements for the Italian Residential Building Stock  

Science Journals Connector (OSTI)

Abstract Directive 2010/31/EU establishes that Member States must ensure that minimum energy performance requirements for buildings are set with a view to achieve cost-optimal levels. The paper presents a methodology for identifying the cost-optimal levels for the Italian residential building stock, following the Guidelines accompanying the Commission Delegated Regulation No. 244/2012. The methodology is applied to a reference building of the IEE-TABULA project and considering different energy efficiency measures. The energy performance and the global cost calculations are performed according to UNI/TS 11300 and UNI EN 15459, respectively. A new cost optimisation procedure based on a sequential search-optimisation technique considering discrete options is applied.

Vincenzo Corrado; Ilaria Ballarini; Simona Paduos

2014-01-01T23:59:59.000Z

394

The use of least squares methods in functional optimization of energy use prediction models  

Science Journals Connector (OSTI)

The least squares method (LSM) is used to optimize the coefficients of a closed-form correlation that predicts the annual energy use of buildings based on key envelope design and thermal parameters. Specifically annual energy use is related to a number parameters like the overall heat transfer coefficients of the wall roof and glazing glazing percentage and building surface area. The building used as a case study is a previously energy-audited mosque in a suburb of Kuwait City Kuwait. Energy audit results are used to fine-tune the base case mosque model in the VisualDOE{trade mark serif} software. Subsequently 1625 different cases of mosques with varying parameters were developed and simulated in order to provide the training data sets for the LSM optimizer. Coefficients of the proposed correlation are then optimized using multivariate least squares analysis. The objective is to minimize the difference between the correlation-predicted results and the VisualDOE-simulation results. It was found that the resulting correlation is able to come up with coefficients for the proposed correlation that reduce the difference between the simulated and predicted results to about 0.81%. In terms of the effects of the various parameters the newly-defined weighted surface area parameter was found to have the greatest effect on the normalized annual energy use. Insulating the roofs and walls also had a major effect on the building energy use. The proposed correlation and methodology can be used during preliminary design stages to inexpensively assess the impacts of various design variables on the expected energy use. On the other hand the method can also be used by municipality officials and planners as a tool for recommending energy conservation measures and fine-tuning energy codes.

2012-01-01T23:59:59.000Z

395

Optimal energy-harvesting cycles for load-driven dielectric generators in plane strain  

E-Print Network [OSTI]

The performances of energy harvesting generators based on dielectric elastomers are investigated. The configuration is of a thin dielectric film coated by stretchable electrodes at both sides. The film is first stretched, then charged and subsequently, afterwards it is released, and finally the charge is harvested at a higher electric potential. The amount of energy extracted by this cycle is bounded by the electric breakdown and the ultimate stretch ratio of the film as well as by structural instabilities due to loss of tension. To identify the optimal cycle that complies with these limits we formulate a constraint optimization problem and solve it with a dedicated solver for two typical classes of elastic dielectrics. As anticipated, we find that the performance of the generator depends critically on the ultimate stretch ratio of the film. However, more surprising is our finding of a universal limit on the dielectric strength of the film beyond which the optimal cycle is independent of this parameter. Thus, we reveal that, regardless of how large the dielectric strength of the material is, there is an upper bound on the amount of harvested energy that depends only on the ultimate stretch ratio. We conclude the work with detailed calculations of the optimal cycles for two commercially available elastic dielectrics.

R. Springhetti; E. Bortot; G. deBotton; M. Gei

2014-03-13T23:59:59.000Z

396

Laser Inertial Fusion-based Energy: Neutronic Design Aspects of a Hybrid Fusion-Fission Nuclear Energy System  

E-Print Network [OSTI]

W. Williams. Laser design basis for the national ignitionof lasers to create the conditions required for ignition and350-nm laser light with a central hot spot ignition (HSI)

Kramer, Kevin James

2010-01-01T23:59:59.000Z

397

Energy Optimization Management in a Petrochemical Plant: A Self-Development Case  

E-Print Network [OSTI]

Eduardo Magalhães| may 21, 2014 Energy Optimization Management in a Petrochemical Plant: A Self-Development Case ESL-IE-14-05-26 Proceedings of the Thrity-Sixth Industrial Energy Technology Conference New Orleans, LA. May 20-23, 2014 EXTRACTION...-IE-14-05-26 Proceedings of the Thrity-Sixth Industrial Energy Technology Conference New Orleans, LA. May 20-23, 2014 BAHIA BRAZIL 1 CRACKER 4 PE 1 PP 1 PVC 1 CHLOR-ALKALI ALAGOAS BRAZIL 2 PVC 1 CHLOR-ALKALI SAO PAULO BRAZIL 2 PE 2 PP 1 CRACKER RIO DE...

Magalhaes, E.

2014-01-01T23:59:59.000Z

398

Distributed Energy Resource Optimization Using a Software as Service (SaaS)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Distributed Energy Resource Optimization Using a Software as Service (SaaS) Distributed Energy Resource Optimization Using a Software as Service (SaaS) Approach at the University of California, Davis Campus Title Distributed Energy Resource Optimization Using a Software as Service (SaaS) Approach at the University of California, Davis Campus Publication Type Report Year of Publication 2011 Authors Stadler, Michael, Chris Marnay, Jonathan Donadee, Judy Lai, Olivier Mégel, Prajesh Bhattacharya, and Afzal S. Siddiqui Pagination 51 Date Published 02/2011 Publisher LBNL City Berkeley Keywords building optimization, distributed energy resources (der), electricity markets and policy group, energy analysis and environmental impacts department Abstract Together with OSIsoft LLC as its private sector partner and matching sponsor, the Lawrence Berkeley National Laboratory (Berkeley Lab) won an FY09 Technology Commercialization Fund (TCF) grant from the U.S. Department of Energy. The goal of the project is to commercialize Berkeley Lab's optimizing program, the Distributed Energy Resources Customer Adoption Model (DER-CAM) using a software as a service (SaaS) model with OSIsoft as its first non-scientific user. OSIsoft could in turn provide optimization capability to its software clients. In this way, energy efficiency and/or carbon minimizing strategies could be made readily available to commercial and industrial facilities. Specialized versions of DER-CAM dedicated to solving OSIsoft's customer problems have been set up on a server at Berkeley Lab. The objective of DER-CAM is to minimize the cost of technology adoption and operation or carbon emissions, or combinations thereof. DER-CAM determines which technologies should be installed and operated based on specific site load, price information, and performance data for available equipment options. An established user of OSIsoft's PI software suite, the University of California, Davis (UCD), was selected as a demonstration site for this project. UCD's participation in the project is driven by its motivation to reduce its carbon emissions. The campus currently buys electricity economically through the Western Area Power Administration (WAPA). The campus does not therefore face compelling cost incentives to improve the efficiency of its operations, but is nonetheless motivated to lower the carbon footprint of its buildings. Berkeley Lab attempted to demonstrate a scenario wherein UCD is forced to purchase electricity on a standard time-of-use tariff from Pacific Gas and Electric (PG&E), which is a concern to Facilities staff. Additionally, DER-CAM has been set up to consider the variability of carbon emissions throughout the day and seasons. Two distinct analyses of value to UCD are possible using this approach. First, optimal investment choices for buildings under the two alternative objectives can be derived. Second, a week-ahead building operations forecaster has been written that executes DER-CAM to find an optimal operating schedule for buildings given their expected building energy services requirements, electricity prices, and local weather. As part of its matching contribution, OSIsoft provided a full implementation of PI and a server to install it on at Berkeley Lab. Using the PItoPI protocol, this gives Berkeley Lab researchers direct access to UCD's PI data base. However, this arrangement is in itself inadequate for performing optimizations. Additional data not included in UCD's PI database would be needed and the campus was not able to provide this information. This report details the process, results, and lessons learned of this commercialization project.

399

MiSer: An Optimal Low-Energy Transmission Strategy for IEEE 802.11a/h  

E-Print Network [OSTI]

at appropriate moments to save battery energy. An alternative way to conserve energy is to apply TPC (Trans- mitMiSer: An Optimal Low-Energy Transmission Strategy for IEEE 802.11a/h Daji Qiao+ Sunghyun Choi the energy consumption by wireless communication de- vices is perhaps the most important issue in the widely

Qiao, Daji

400

66 IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, VOL. 1, NO. 2, JULY 2010 Optimization of Wind Turbine Performance With  

E-Print Network [OSTI]

66 IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, VOL. 1, NO. 2, JULY 2010 Optimization of Wind Turbine, torque, tower acceleration, wind turbine vibrations. I. INTRODUCTION I NTEREST in renewable energy has to carbon taxation has become a catalyst in the quest for clean energy. Wind energy has been most

Kusiak, Andrew

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Self-focusing, channel formation, and high-energy ion generation in interaction of an intense short laser pulse with a He jet  

E-Print Network [OSTI]

Self-focusing, channel formation, and high-energy ion generation in interaction of an intense short of interaction of a relativistically intense 4-TW, 400-fs laser pulse with a He gas jet. We observe a stable data, we reconstructed the axial profile of laser channel and on-axis laser intensity. The estimated

Umstadter, Donald

402

Energy Loss and Charge Transfer of Argon in a Laser-Generated Carbon Plasma  

Science Journals Connector (OSTI)

This Letter reports on the measurement of the energy loss and the projectile charge states of argon ions at an energy of 4??MeV/u penetrating a fully ionized carbon plasma. The plasma of ne?1020??cm-3 and Te?180??eV is created by two laser beams at ?Las=532??nm incident from opposite sides on a thin carbon foil. The resulting plasma is spatially homogenous and allows us to record precise experimental data. The data show an increase of a factor of 2 in the stopping power which is in very good agreement with a specifically developed Monte Carlo code, that allows the calculation of the heavy ion beam’s charge state distribution and its energy loss in the plasma.

A. Frank, A. Blaževi?, V. Bagnoud, M. M. Basko, M. Börner, W. Cayzac, D. Kraus, T. Heßling, D. H. H. Hoffmann, A. Ortner, A. Otten, A. Pelka, D. Pepler, D. Schumacher, An. Tauschwitz, and M. Roth

2013-03-12T23:59:59.000Z

403

Analysis of two-dimensional high-energy photoelectron momentum distributions in the single ionization of atoms by intense laser pulses  

E-Print Network [OSTI]

, using longer pulses at lower intensities. The energy spectra above 4Up, where Up is the ponderomotive energy, have been found to vary rapidly with small changes in laser intensities 10,11 when laser pulseAnalysis of two-dimensional high-energy photoelectron momentum distributions in the single

Lin, Chii-Dong

404

Energy parameters and stability of the discharge in a nonchain, self-sustained-discharge-pumped HF laser  

SciTech Connect (OSTI)

The generation and discharge are studied in a nonchain HF laser operating on mixtures of SF{sub 6} with hydrogen and hydrocarbons. The specific output energy of the laser is 8.8 J L{sup -1} (73 J L{sup -1} atm{sup -1}) and the total lasing efficiency is 5.5%. It is shown that the formation and maintaining of a volume discharge in self-sustained-discharge-pumped HF lasers with a large content of electronegative gases is caused by the accumulation of the volume discharge of negative ions in conducting regions. (letters)

Tarasenko, Viktor F; Orlovskii, Viktor M; Panchenko, Aleksei N [Institute of High Current Electronics, Siberian Branch, Russian Academy of Sciences, Tomsk (Russian Federation)

2001-12-31T23:59:59.000Z

405

Cost of electricity difference for direct and indirect drive targets for inertial fusion energy using a diode pumped solid state laser driver  

Science Journals Connector (OSTI)

A detailed systems analysis code has been used to compare the projected cost of electricity (COE) for inertial fusion energy for direct drive (DD) and indirect drive (ID) target scenarios, based on a diode pumped solid state laser driver with Yb:S-FAP (Yb doped Sr5(PO4)3F) gain media. Previously published target gain curves which resulted in a target gain at the optimal DD operating point that is 30% higher than that for the ID scenario have been used. This gain advantage for DD is offset by a requirement for improved beam smoothing, which was obtained via smoothing by spectral dispersion (SSD) with a 1 THz bandwidth at 349 nm. Such a large SSD bandwidth has a number of effects on laser performance, including greater risk of optics damage from non-linear effects, lowered harmonic conversion efficiency, altered extraction parameters and higher front-end costs. The non-linear effects, which contribute to optical component damage by amplification of intensity non-uniformities, were parameterized through a constraint on the maximum allowable B integral (i.e. the total average phase retardation due to the non-linear indices of all materials traversed by the beam). If we constrain B to be no larger than 1.8 rad, which is the presently accepted safe value based on observations in single shot glass laser facilities, the COEs for DD and ID are predicted to be the same within the uncertainties. If technology permits the B limit to be raised, the optimized COE for DD is predicted to decrease relative to that for ID.

C.D. Orth

2002-01-01T23:59:59.000Z

406

High-energy picosecond near-vacuum ultraviolet pulses generated by sum-frequency mixing of an amplified Ti:sapphire laser  

Science Journals Connector (OSTI)

We demonstrate high-energy picosecond near-vacuum ultraviolet laser pulse generation. Frequency quadrupling is achieved by noncollinear sum-frequency mixing of the fundamental and the...

Zhu, Jiangfeng; Ling, Weijun; Wang, Zhaohua; Wang, Peng; Sun, Jinghua; Wei, Zhiyi; Zhang, Dacheng; Ma, Xinwen; Zhan, Wenlong

2007-01-01T23:59:59.000Z

407

Diode-pumped solid-state laser driver experiments for inertial fusion energy applications  

SciTech Connect (OSTI)

Although solid-state lasers have been the primary means by which the physics of inertial confinement fusion (ICF) have been investigated, it was previously thought that solid-state laser technology could not offer adequate efficiencies for an inertial fusion energy (IFE) power plant. Orth and co-workers have recently designed a conceptual IFE power plant, however, with a high efficiency diode-pumped solid-state laser (DPSSL) driver that utilized several recent innovations in laser technology. It was concluded that DPSSLs could offer adequate performance for IFE with reasonable assumptions. This system was based on a novel diode pumped Yb-doped Sr{sub 5}(PO{sub 4}){sub 3}F (Yb:S-FAP) amplifier. Because this is a relatively new gain medium, a project was established to experimentally validate the diode-pumping and extraction dynamics of this system at the smallest reasonable scale. This paper reports on the initial experimental results of this study. We found the pumping dynamics and extraction cross-sections of Yb:S-FAP crystals to be similar to those previously inferred by purely spectroscopic techniques. The saturation fluence for pumping was measured to be 2.2 J/cm{sup 2} using three different methods based on either the spatial, temporal, or energy transmission properties of a Yb:S-FAP rod. The small signal gain implies an emission cross section of 6.0{times}10{sup {minus}20} cm{sup 2}. Up to 1.7 J/cm{sup 3} of stored energy density was achieved in a 6{times}6{times}44 mm{sup 3} Yb:S-FAP amplifier rod. In a free running configuration diode-pumped slope efficiencies up to 43% were observed with output energies up to {approximately}0.5 J per 1 ms pulse from a 3{times}3{times}30 mm{sup 3} rod. When the rod was mounted in a copper block for cooling, 13 W of average power was produced with power supply limited operation at 70 Hz with 500 {mu}s pulses.

Marshall, C.D.; Payne, S.A.; Emanuel, M.E.; Smith, L.K.; Powell, H.T.; Krupke, W.F.

1995-07-11T23:59:59.000Z

408

Alumina reduction by laser sustained plasma for aluminum-based renewable energy cycling  

Science Journals Connector (OSTI)

A novel alumina (Al 2O3) reduction technique for a renewable energy cycling system based on aluminum is proposed. Al 2O3 powder was fed into laser-sustained plasma and thermally dissociated. The produced Al was expanded to supersonic speeds through a nozzle. From the Al and argon line distributions in the flow direction it was found that Al remained in the dissociated state. A water-cooled copper tube was inserted in the flow to collect Al. X-ray analysis indicated that elemental Al was observed on the surface of the tube. The maximum value of the estimated reduction efficiency was 5%.

Kimiya Komurasaki

2013-01-01T23:59:59.000Z

409

Optimal Deployment of Thermal Energy Storage under Diverse Economic and Climate Conditions  

SciTech Connect (OSTI)

This paper presents an investigation of the economic benefit of thermal energy storage (TES) for cooling, across a range of economic and climate conditions. Chilled water TES systems are simulated for a large office building in four distinct locations, Miami in the U.S.; Lisbon, Portugal; Shanghai, China; and Mumbai, India. Optimal system size and operating schedules are determined using the optimization model DER-CAM, such that total cost, including electricity and amortized capital costs are minimized. The economic impacts of each optimized TES system is then compared to systems sized using a simple heuristic method, which bases system size as fraction (50percent and 100percent) of total on-peak summer cooling loads. Results indicate that TES systems of all sizes can be effective in reducing annual electricity costs (5percent-15percent) and peak electricity consumption (13percent-33percent). The investigation also indentifies a number of criteria which drive TES investment, including low capital costs, electricity tariffs with high power demand charges and prolonged cooling seasons. In locations where these drivers clearly exist, the heuristically sized systems capture much of the value of optimally sized systems; between 60percent and 100percent in terms of net present value. However, in instances where these drivers are less pronounced, the heuristic tends to oversize systems, and optimization becomes crucial to ensure economically beneficial deployment of TES, increasing the net present value of heuristically sized systems by as much as 10 times in some instances.

DeForest, Nicolas; Mendes, Goncalo; Stadler, Michael; Feng, Wei; Lai, Judy; Marnay, Chris

2014-04-15T23:59:59.000Z

410

Building America Top Innovations Hall of Fame Profile … Building Energy Optimization Analysis Method (BEopt)  

Broader source: Energy.gov (indexed) [DOE]

House geometries are among the many House geometries are among the many options users can enter in BEopt. Results shown here are rendered in SketchUp and show neighboring houses for shading analysis. To achieve Building America's ambitious energy-efficiency goals, it becomes increasingly important that researchers can identify the most cost-effective, high-performance improvements. BEopt has proven to be an invaluable analysis tool enabling Building America and its research partners to progress to zero net-energy new homes and deep energy retrofits. There are many energy analysis software tools out there-some do optimization, some do residential analysis, some do retrofit analysis, some come pre-packaged with options and costs, etc. With support from DOE's Building America program, researchers at the National Renewable Energy

411

Laser Heat Treatment [Laser Applications Laboratory] - Nuclear Engineering  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Heat Treatment Heat Treatment Capabilities Engineering Experimentation Reactor Safety Experimentation Aerosol Experiments System Components Laser Applications Overview Laser Oil & Gas Well Drilling Laser Heat Treatment Laser Welding of Metals On-line Monitoring Laser Beam Delivery Laser Glazing of Railroad Rails High Power Laser Beam Delivery Decontamination and Decommissioning Refractory Alloy Welding Robots Applications Other Facilities Other Capabilities Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Laser Applications Laboratory Laser Heat Treatment Project description: Optimization of laser beam heat treatment. Category: Project with industrial partner (Caterpillar and USCAR) Bookmark and Share Heat treatment optics

412

Multi-objective optimization of a combined cooling, heating and power system driven by solar energy  

Science Journals Connector (OSTI)

Abstract This paper presented a multi-objective optimization of a combined cooling, heating and power system (CCHP) driven by solar energy. The flat-plate solar collector was employed to collect the solar radiation and to transform it into thermal energy. The thermal storage unit was installed to storage the thermal energy collected by the collectors to ensure a continuous energy supplement when solar energy was weak or insufficient. The CCHP system combined an organic Rankine cycle with an ejector refrigeration cycle to yield electricity and cold capacity to users. In order to conduct the optimization, the mathematical model of the solar-powered CCHP system was established. Owing to the limitation of the single-objective optimization, the multi-objective optimization of the system was carried out. Four key parameters, namely turbine inlet temperature, turbine inlet pressure, condensation temperature and pinch temperature difference in vapor generator, were selected as the decision variables to examine the performance of the overall system. Two objective functions, namely the average useful output and the total heat transfer area, were selected to maximize the average useful output and to minimize the total heat transfer area under the given conditions. NSGA-II (Non-dominated Sort Genetic Algorithm-II) was employed to achieve the final solutions in the multi-objective optimization of the system operating in three modes, namely power mode, combined heat and power (CHP) mode, and combined cooling and power (CCP) mode. For the power mode, the optimum average useful output and total heat transfer area were 6.40 kW and 46.16 m2. For the CCP mode, the optimum average useful output and total heat transfer area were 5.84 kW and 58.74 m2. For the CHP mode, the optimum average useful output and total heat transfer area were 8.89 kW and 38.78 m2. Results also indicated that the multi-objective optimization provided a more comprehensive solution set so that the optimum performance could be achieved according to different requirements for system.

Man Wang; Jiangfeng Wang; Pan Zhao; Yiping Dai

2015-01-01T23:59:59.000Z

413

Integrating requirement analysis and multi-objective optimization for office building energy retrofit strategies  

Science Journals Connector (OSTI)

Abstract The existing office building stock is a key target for energy retrofits to substantially reduce adverse impacts on the environment, human health, and the economy. Success of an energy retrofit project is tied with the assessment and selection of energy efficiency measures that can satisfy stakeholders’ diverse, and often conflicting requirements. The current study establishes a model-based method to support design teams in making informed multi-criteria decisions for energy-efficiency solutions at the early design stage. The key feature of the hybrid framework is the integration of an analysis procedure carried out by a design team and a numerical procedure of optimization carried out by computer. Such an interaction is necessary as building design and retrofit requires many qualitative aspects that require human judgment. In contrast to previous approaches, this study provides a basis for embedding multi-objective optimization into the decision making on energy retrofit solutions, which considers the important role of stakeholders by carrying out the analysis procedure. An office building in Germany needing an energy retrofit serves as a case study to demonstrate the feasibility of the proposed model.

Yunming Shao; Philipp Geyer; Werner Lang

2014-01-01T23:59:59.000Z

414

From the Optimizing Thermostat to a Smart Energy Management System: Models,  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

From the Optimizing Thermostat to a Smart Energy Management System: Models, From the Optimizing Thermostat to a Smart Energy Management System: Models, Benchmark, and Insights Speaker(s): Yong Liang Date: May 1, 2012 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Janie Page Nowadays, users in the retail electricity market only need to pay a fixed rate for electricity. This strategy results in lack of coordination between demand and supply and costs significant waste. A shift from fixed rate pricing in retail markets could potentially yield many benefits. Time-varying pricing promotes the substitution of off-peak consumption for peak consumption, reducing strain on the electrical system, the need for costly and inefficient "peaker" plants, and waste in electricity delivery. However, existing research supports what common sense suggests:

415

Data Warehouse Model to Support Optimized Operation and Energy Savings in Buildings  

E-Print Network [OSTI]

University College Cork (Ireland) Department of Civil and Environmental Engineering Data Warehouse Model to support Optimized Operation and Energy Savings in Buildings Paul Stack, Brian Cahill, Farhan Manzoor, Prof. Karsten Menzel 20... October 2011 page 1ICEBO 2011 Session 10 - Brian Cahill University College Cork (Ireland) Department of Civil and Environmental Engineering ICT for Optimised Building Operation (ITOBO) 20 October 2011 ICEBO 2011 Session 10 - Brian Cahill page 2...

Stack, P.; Cahill, B.; Manzoor, F.; Menzel, K.

2011-01-01T23:59:59.000Z

416

Fermilab Central Computing Facility: Energy conservation report and mechanical systems design optimization and cost analysis study  

SciTech Connect (OSTI)

This report is developed as part of the Fermilab Central Computing Facility Project Title II Design Documentation Update under the provisions of DOE Document 6430.1, Chapter XIII-21, Section 14, paragraph a. As such, it concentrates primarily on HVAC mechanical systems design optimization and cost analysis and should be considered as a supplement to the Title I Design Report date March 1986 wherein energy related issues are discussed pertaining to building envelope and orientation as well as electrical systems design.

Krstulovich, S.F.

1986-11-12T23:59:59.000Z

417

1742 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--I: REGULAR PAPERS, VOL. 55, NO. 6, JULY 2008 An Adaptive System for Optimal Solar Energy  

E-Print Network [OSTI]

An Adaptive System for Optimal Solar Energy Harvesting in Wireless Sensor Network Nodes Cesare Alippi, Fellow, with solar energy being the most inter- esting one in outdoor deployments due to its relatively high power transferring circuit for optimally conveying solar energy into rechargeable batteries even in not optimal

Alippi, Cesare

418

Laser Welding of Metals [Laser Applications Laboratory] - Nuclear  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Laser Welding of Metals Laser Welding of Metals Capabilities Engineering Experimentation Reactor Safety Experimentation Aerosol Experiments System Components Laser Applications Overview Laser Oil & Gas Well Drilling Laser Heat Treatment Laser Welding of Metals On-line Monitoring Laser Beam Delivery Laser Glazing of Railroad Rails High Power Laser Beam Delivery Decontamination and Decommissioning Refractory Alloy Welding Robots Applications Other Facilities Other Capabilities Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Laser Applications Laboratory Laser Welding of Metals Project description: High-speed laser welding of metals. Category: Project with industrial partner (Delphi Energy and Engine Management Systems) Bookmark and Share

419

Toward zero net energy buildings : optimized for energy use and cost  

E-Print Network [OSTI]

Recently, there has been a push toward zero net energy buildings (ZNEBs). While there are many options to reduce the energy used in buildings, it is often difficult to determine which are the most appropriate technologies ...

Brown, Carrie Ann, Ph. D. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

420

The optimization problem Genetic Algorithm  

E-Print Network [OSTI]

The optimization problem Genetic Algorithm Particle Swarm Optimization Experimental results for time-power optimization META, October 27-31, 2014 1 / 25 #12;The optimization problem Genetic Algorithm Particle Swarm Optimization Experimental results Conclusions Time and energy optimization Traditionally

Giménez, Domingo

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Optimal structure of Nigeria's energy sector under carbon-dioxide reduction  

Science Journals Connector (OSTI)

Energy requirements in Nigeria will continue to increase as a result of an expanding economy and a rapidly growing population. Although the country has abundant natural energy resources, substantial financial commitments will be required to put the necessary supply infrastructure in place in order to meet the growing requirements. Furthermore, there is the need for a carefully planned consumption pattern in view of the growing awareness of the environmental problems posed by continued consumption of these resources. This paper discusses a study of the optimal structure of the Nigerian energy sector over a period of 40 years, based on the least-cost path and carbon-dioxide emission reduction. The emission reduction strategies take the form of linear annual reductions, reaching 20% and 40% respectively below the year 2030 baseline emissions. The effects of these constraints on fuel mix in the supply and demand structure of the energy system are presented.

F.I. Ibitoye; J-F.K. Akinbami; A.O. Adegbulugbe

1998-01-01T23:59:59.000Z

422

Laser ignition  

DOE Patents [OSTI]

In the apparatus of the invention, a first excitation laser or other excitation light source is used in tandem with an ignitor laser to provide a compact, durable, engine deployable fuel ignition laser system. Reliable fuel ignition is provided over a wide range of fuel conditions by using a single remote excitation light source for one or more small lasers located proximate to one or more fuel combustion zones. In a third embodiment, alternating short and long pulses of light from the excitation light source are directed into the ignitor laser. Each of the embodiments of the invention can be multiplexed so as to provide laser light energy sequentially to more than one ignitor laser.

Early, James W. (Los Alamos, NM); Lester, Charles S. (San Juan Pueblo, NM)

2003-01-01T23:59:59.000Z

423

Climate Change and Optimal Energy Technology Department of Mechanical and Industrial Engineering, College of Engineering, University of Massachusetts, Amherst,  

E-Print Network [OSTI]

Climate Change and Optimal Energy Technology R&D Policy Erin Baker Department of Mechanical of Massachusetts, Amherst, MA 01003, solak@som.umass.edu Public policy response to global climate change presents accounting for uncertainty and learning in climate change can have a large impact on optimal policy

Massachusetts at Amherst, University of

424

Compact disposal of high-energy electron beams using passive or laser-driven plasma decelerating stage  

SciTech Connect (OSTI)

A plasma decelerating stage is investigated as a compact alternative for the disposal of high-energy beams (beam dumps). This could benefit the design of laser-driven plasma accelerator (LPA) applications that require transportability and or high-repetition-rate operation regimes. Passive and laser-driven (active) plasma-based beam dumps are studied analytically and with particle-in-cell (PIC) simulations in a 1D geometry. Analytical estimates for the beam energy loss are compared to and extended by the PIC simulations, showing that with the proposed schemes a beam can be efficiently decelerated in a centimeter-scale distance.

Bonatto, A.; Schroeder, C.B.; Vay, J.-L.; Geddes, C.R.; Benedetti, C.; Esarey and, E.; Leemans, W.P.

2014-07-13T23:59:59.000Z

425

Spectrum bandwidth narrowing of Thomson scattering X-rays with energy chirped electron beams from laser wakefield acceleration  

SciTech Connect (OSTI)

We study incoherent Thomson scattering between an ultrashort laser pulse and an electron beam accelerated from a laser wakefield. The energy chirp effects of the accelerated electron beam on the final radiation spectrum bandwidth are investigated. It is found that the scattered X-ray radiation has the minimum spectrum width and highest intensity as electrons are accelerated up to around the dephasing point. Furthermore, it is proposed that the electron acceleration process inside the wakefield can be studied by use of 90° Thomson scattering. The dephasing position and beam energy chirp can be deduced from the intensity and bandwidth of the scattered radiation.

Xu, Tong; Chen, Min, E-mail: minchen@sjtu.edu.cn; Li, Fei-Yu; Yu, Lu-Le [Key Laboratory for Laser Plasmas (Ministry of Education), Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China)] [Key Laboratory for Laser Plasmas (Ministry of Education), Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China); Sheng, Zheng-Ming, E-mail: zmsheng@sjtu.edu.cn [Key Laboratory for Laser Plasmas (Ministry of Education), Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China) [Key Laboratory for Laser Plasmas (Ministry of Education), Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China); SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG (United Kingdom); Zhang, Jie [Key Laboratory for Laser Plasmas (Ministry of Education), Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China) [Key Laboratory for Laser Plasmas (Ministry of Education), Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China); Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190 (China)

2014-01-06T23:59:59.000Z

426

Beam energy distribution influences on density modulation efficiency in seeded free-electron lasers  

E-Print Network [OSTI]

The beam energy spread at the entrance of undulator system is of paramount importance for efficient density modulation in high-gain seeded free-electron lasers (FELs). In this paper, the dependences of high harmonic micro-bunching in the high-gain harmonic generation (HGHG), echo-enabled harmonic generation (EEHG) and phase-merging enhanced harmonic generation (PEHG) schemes on the electron energy spread distribution are studied. Theoretical investigations and multi-dimensional numerical simulations are applied to the cases of uniform and saddle beam energy distributions and compared to a traditional Gaussian distribution. It shows that the uniform and saddle electron energy distributions significantly enhance the performance of HGHG-FELs, while they almost have no influence on EEHG and PEHG schemes. A numerical example demonstrates that, with about 84keV RMS uniform and/or saddle slice energy spread, the 30th harmonic radiation can be directly generated by a single-stage seeding scheme for a soft x-ray FEL f...

Wang, Guanglei; Deng, Haixiao; Zhang, Weiqing; Wu, Guorong; Dai, Dongxu; Wang, Dong; Zhao, Zhentang; Yang, Xueming

2015-01-01T23:59:59.000Z

427

Laser ablation in analytical chemistry - A review  

SciTech Connect (OSTI)

Laser ablation is becoming a dominant technology for direct solid sampling in analytical chemistry. Laser ablation refers to the process in which an intense burst of energy delivered by a short laser pulse is used to sample (remove a portion of) a material. The advantages of laser ablation chemical analysis include direct characterization of solids, no chemical procedures for dissolution, reduced risk of contamination or sample loss, analysis of very small samples not separable for solution analysis, and determination of spatial distributions of elemental composition. This review describes recent research to understand and utilize laser ablation for direct solid sampling, with emphasis on sample introduction to an inductively coupled plasma (ICP). Current research related to contemporary experimental systems, calibration and optimization, and fractionation is discussed, with a summary of applications in several areas.

Russo, Richard E.; Mao, Xianglei; Liu, Haichen; Gonzalez, Jhanis; Mao, Samuel S.

2001-10-10T23:59:59.000Z

428

vol. 163, no. 3 the american naturalist march 2004 Optimal Body Size and Energy Expenditure during Winter  

E-Print Network [OSTI]

, South Africa; e-mail: m.scantlebury@zoology.up.ac.za. § E-mail: rachel@naturebureau.co.uk. k E-mail: xvol. 163, no. 3 the american naturalist march 2004 Optimal Body Size and Energy Expenditure during energy requirements for thermogenesis at a time when little energy is available. We formulated a model

Lambin, Xavier

429

Design optimization methodology for power converters based on global energy requirement criteria. Application to a DC-DC flyback structure  

E-Print Network [OSTI]

for power electronic converters according to the Global Energy Requirement (GER) criterion, i.e. the primary-design converters in order to take its environmental impacts (here, only its global primary energy consumptionDesign optimization methodology for power converters based on global energy requirement criteria

Paris-Sud XI, Université de

430

Analysis and optimization of cascade Rankine cycle for liquefied natural gas cold energy recovery  

Science Journals Connector (OSTI)

Abstract This study proposes a new concept called the cascade Rankine cycle, which recovers LNG (liquefied natural gas) cold energy for power generation, optimizes the cycle by investigating the effects of key parameters on its performance, and compares its thermal efficiency, exergy efficiency and economic evaluation to those of the conventional alternatives. The cascade Rankine cycle consists of multiple stages of the organic Rankine cycle in a layered structure in which the first stage encompasses the second one that, in turn, encompasses the next. Due to its layered configuration, optimization of the cycle is straightforward and involves sequentially optimizing the individual stages. Optimization of the subsequent stages, however, required process simulation considering the equipment efficiency and the thermodynamic properties of the working fluid. Process simulation indicated that the indicators such as net power output, thermal efficiency, and exergy efficiency generally increase as the number of stages increases. These indicators were, however, significantly affected by the thermodynamic properties of the working fluids. The proposed cycles demonstrated significantly better performance in these indicators than the conventional cycles. The three-stage cascade Rankine cycle with propane as the working fluid exhibited the highest net power output, thermal efficiency and exergy efficiency within the set.

In-Hwan Choi; Sangick Lee; Yutaek Seo; Daejun Chang

2013-01-01T23:59:59.000Z

431

Optimization of Electric Energy in Three-Phase Induction Motor by Balancing of Torque and Flux Dependent Losses  

Science Journals Connector (OSTI)

This paper presents the solution of the energy optimal control of three-phase induction motor (IM) by balancing of torque and flux dependent losses. First, we build formula of total losses of motor (iron losse...

Nguyen Thanh Hung; Nguyen Chi Thien…

2014-01-01T23:59:59.000Z

432

Methodology, morphology, and optimization of carbon nanotube growth for improved energy storage in a double layer capacitor  

E-Print Network [OSTI]

The goal of this thesis is to optimize the growth of carbon nanotubes (CNTs) on a conducting substrate for use as an electrode to improve energy density in a double-layer capacitor. The focus has been on several areas, ...

Ku, Daniel C. (Daniel Chung-Ming), 1985-

2009-01-01T23:59:59.000Z

433

E-AMOM: An Energy-Aware Modeling and Optimization Methodology for Scientific Applications on Multicore Systems  

E-Print Network [OSTI]

power consumption of the scientific applications. Further, we optimize our applications based upon insights provided by the performance models to reduce runtime of the applications. Our methods and techniques are able to save up to 18% in energy...

Lively, Charles

2012-07-16T23:59:59.000Z

434

International Journal of Innovations in Engineering and Technology (IJIET) Optimal Rural Microgrid Energy Management Using  

E-Print Network [OSTI]

Abstract-The microgrid concept is a natural evolution of distributed resources that may be used to serve energy to customers in areas where conventional power system approaches cannot satisfy the reliability needs. Microgrids[2] may also provide support to conventional power systems that are too constrained to meet the power demands of customers. This paper presents a case study of a remote village dependent on agriculture, with no grid extension. The remote village consists of 400 people and 200 cattle including poultries, bovines, swine etc. The latitude and longitude of the study area are 30 ° 32 ’ N and 76 ° 39 ’ E respectively. The proposed model consists of Photovoltaic (PV) array, wind energy subsystem, micro hydro, biogas fueled generator and battery storage sub-system. The final goal is to maximize energy output from distributed energy resources (DERs) by Optimization using HOMER. Performance of each component of the model will be evaluated and finally sensitivity analysis will be performed to optimize the system at different conditions.

unknown authors

435

Combined Municipal Solid Waste and biomass system optimization for district energy applications  

SciTech Connect (OSTI)

Highlights: • Combined energy conversion of MSW and agricultural residue biomass is examined. • The model optimizes the financial yield of the investment. • Several system specifications are optimally defined by the optimization model. • The application to a case study in Greece shows positive financial yield. • The investment is mostly sensitive on the interest rate, the investment cost and the heating oil price. - Abstract: Municipal Solid Waste (MSW) disposal has been a controversial issue in many countries over the past years, due to disagreement among the various stakeholders on the waste management policies and technologies to be adopted. One of the ways of treating/disposing MSW is energy recovery, as waste is considered to contain a considerable amount of bio-waste and therefore can lead to renewable energy production. The overall efficiency can be very high in the cases of co-generation or tri-generation. In this paper a model is presented, aiming to support decision makers in issues relating to Municipal Solid Waste energy recovery. The idea of using more fuel sources, including MSW and agricultural residue biomass that may exist in a rural area, is explored. The model aims at optimizing the system specifications, such as the capacity of the base-load Waste-to-Energy facility, the capacity of the peak-load biomass boiler and the location of the facility. Furthermore, it defines the quantity of each potential fuel source that should be used annually, in order to maximize the financial yield of the investment. The results of an energy tri-generation case study application at a rural area of Greece, using mixed MSW and biomass, indicate positive financial yield of investment. In addition, a sensitivity analysis is performed on the effect of the most important parameters of the model on the optimum solution, pinpointing the parameters of interest rate, investment cost and heating oil price, as those requiring the attention of the decision makers. Finally, the sensitivity analysis is enhanced by a stochastic analysis to determine the effect of the volatility of parameters on the robustness of the model and the solution obtained.

Rentizelas, Athanasios A., E-mail: arent@central.ntua.gr; Tolis, Athanasios I., E-mail: atol@central.ntua.gr; Tatsiopoulos, Ilias P., E-mail: itat@central.ntua.gr

2014-01-15T23:59:59.000Z

436

High energy second-harmonic generation of Nd:glass laser radiation with large aperture CsLiB6O10 crystals  

Science Journals Connector (OSTI)

We have demonstrated the generation of a high-energy green laser pulse using large aperture CsLiB6O10 (CLBO) crystals for the first time to our knowledge. A pulsed energy of 25 J at...

Kiriyama, Hiromitsu; Inoue, Norihiro; Yamakawa, Koichi

2002-01-01T23:59:59.000Z

437

Laser device  

DOE Patents [OSTI]

A laser device includes a virtual source configured to aim laser energy that originates from a true source. The virtual source has a vertical rotational axis during vertical motion of the virtual source and the vertical axis passes through an exit point from which the laser energy emanates independent of virtual source position. The emanating laser energy is collinear with an orientation line. The laser device includes a virtual source manipulation mechanism that positions the virtual source. The manipulation mechanism has a center of lateral pivot approximately coincident with a lateral index and a center of vertical pivot approximately coincident with a vertical index. The vertical index and lateral index intersect at an index origin. The virtual source and manipulation mechanism auto align the orientation line through the index origin during virtual source motion.

Scott, Jill R. (Idaho Falls, ID); Tremblay, Paul L. (Idaho Falls, ID)

2008-08-19T23:59:59.000Z

438

Efficient energy transfer in light-harvesting systems, I: optimal temperature, reorganization energy, and spatial-  

E-Print Network [OSTI]

. Silbey1 Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts, 02139, USA. E-mails: jianshu@mit.edu; silbey@mit.edu Abstract. Understanding the mechanisms stages in the conversion of solar energy into chemical and other useful forms of energy for human

Cao, Jianshu

439

Laser prepulse dependency of proton-energy distributions in ultraintense laser-foil interactions with an online time-of-flight technique  

SciTech Connect (OSTI)

Fast protons are observed by a newly developed online time-of-flight spectrometer, which provides shot-to-shot proton-energy distributions immediately after the irradiation of a laser pulse having an intensity of {approx}10{sup 18} W/cm{sup 2} onto a 5-{mu}m-thick copper foil. The maximum proton energy is found to increase when the intensity of a fs prepulse arriving 9 ns before the main pulse increases from 10{sup 14} to 10{sup 15} W/cm{sup 2}. Interferometric measurement indicates that the preformed-plasma expansion at the front surface is smaller than 15 {mu}m, which corresponds to the spatial resolution of the diagnostics. This sharp gradient of the plasma has the beneficial effect of increasing the absorption efficiency of the main-pulse energy, resulting in the increase in the proton energy. This is supported by the result that the x-ray intensity from the laser plasma clearly increases with the prepulse intensity.

Yogo, Akifumi; Daido, Hiroyuki; Fukumi, Atsushi; Li, Zhong; Ogura, Koichi; Sagisaka, Akito; Pirozhkov, Alexander S.; Nakamura, Shu; Iwashita, Yoshihisa; Shirai, Toshiyuki; Noda, Akira; Oishi, Yuji; Nayuki, Takuya; Fujii, Takashi; Nemoto, Koshichi; Woo Choi, Il; Hee Sung, Jae; Ko, Do-Kyeong; Lee, Jongmin; Kaneda, Minoru [Advanced Photon Research Center, Japan Atomic Energy Agency (JAEA), Kyoto 619-0215 (Japan); Institute for Chemical Research, Kyoto University, Kyoto 611-0011 (Japan); Central Research Institute of Electric Power Industry (CRIEPI), Kanagawa 240-0196 (Japan); Advanced Photonics Research Institute, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712 (Korea, Republic of); Department of Nuclear Engineering, Kyoto University, Kyoto 611-0011 (Japan)] (and others)

2007-04-15T23:59:59.000Z

440

Design and optimization of piezoelectric impact-based micro wind energy harvester for wireless sensor network  

Science Journals Connector (OSTI)

Abstract The purpose of the current study is to design and optimize a piezoelectric impact-based micro wind energy harvester (PIMWEH) as a power source for wireless sensor networks. First, using new PIMWEH design, numerical simulation, and experimental comparison analysis, we determined the most durable PIMWEH shape for application as a power source of WSNs. The experimental results show that the optimized PIMWEH generated 2.8 mW (RMS value) and did not crack within 40 h. Second, to supply power for sensor operation, we performed an experiment using a rectifying circuit, an AC–DC converter, and an electrical charger. The experimental results show a pure DC voltage signal of 3.3 V, and the output power was 1.0 mW (3.1 mW/cm3). A charging energy of 0.845 J was obtained in 24 min. Third, we calculated the efficiency of the PIMWEH to evaluate its performance. Using a three-step energy conversion process (using wind turbine, PZT, and LTC3588-1), an overall PIMWEH power conversion efficiency of 3.2% was obtained. For one day, the PIMWEH could supply power that is 6263 to 25055 times the power requirement of a commercialized ZigBee transmission. In addition, transmitting signals at intervals from 3.4 to 13 s was made possible.

Hyun Jun Jung; Yooseob Song; Seong Kwang Hong; Chan Ho Yang; Sung Joo Hwang; Se Yeong Jeong; Tae Hyun Sung

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Developing Energy Crops for Thermal Applications: Optimizing Fuel Quality, Energy Security and GHG Mitigation  

Science Journals Connector (OSTI)

Unprecedented opportunities for biofuel development are occurring as a result of increasing energy security concerns and the need to reduce greenhouse gas (GHG) emissions. This chapter analyzes the potential ... ...

Roger Samson; Claudia Ho Lem…

2008-01-01T23:59:59.000Z

442

Review of models and actors in energy mix optimization – can leader visions and decisions align with optimum model strategies for our future energy systems?  

Science Journals Connector (OSTI)

Organizational behavior and stakeholder processes continually influence energy strategy choices and decisions. Although theoretical optimizations can provide guidance for energy mix decisions from a pure physical systems engineering point of view, these solutions might not be optimal from a political or social perspective. Improving the transparency of our vision sharing and strategy making processes in a systematic way is therefore as important as the actual systems engineering solutions proposed by the modeling tools. Energy trend forecasting and back-casting, scenarios and system analysis have matured into powerful modeling tools for providing advice on optimizing our future energy solutions. The integrated use and iterative improvement of all these approaches can result in energy systems that become better optimized. Such an integrated approach is particularly important to those who have decision-making power over our future energy direction. Some of the challenges and opportunities for energy strategists that strive to promote optimal decisions on our future energy solutions are highlighted in this state-of-the-art review.

Ruud Weijermars; Peter Taylor; Olivier Bahn; Subir Ranjan Das; Yi-Ming Wei

2012-01-01T23:59:59.000Z

443

An Efficient Quantum Jump Method for Coherent Energy Transfer Dynamics in Photosynthetic Systems under the Influence of Laser Fields  

E-Print Network [OSTI]

We present a non-Markovian quantum jump approach for simulating coherent energy transfer dynamics in molecular systems in the presence of laser fields. By combining a coherent modified Redfield theory (CMRT) and a non-Markovian quantum jump (NMQJ) method, this new approach inherits the broad-range validity from the CMRT and highly efficient propagation from the NMQJ. To implement NMQJ propagation of CMRT, we show that the CMRT master equation can be casted into a generalized Lindblad form. Moreover, we extend the NMQJ approach to treat time-dependent Hamiltonian, enabling the description of excitonic systems under coherent laser fields. As a benchmark of the validity of this new method, we show that the CMRT-NMQJ method accurately describes the energy transfer dynamics in a prototypical photosynthetic complex. Finally, we apply this new approach to simulate the quantum dynamics of a dimer system coherently excited to coupled single-excitation states under the influence of laser fields, which allows us to investigate the interplay between the photoexcitation process and ultrafast energy transfer dynamics in the system. We demonstrate that laser-field parameters significantly affect coherence dynamics of photoexcitations in excitonic systems, which indicates that the photoexcitation process must be explicitly considered in order to properly describe photon-induced dynamics in photosynthetic systems. This work should provide a valuable tool for efficient simulations of coherent control of energy flow in photosynthetic systems and artificial optoelectronic materials.

Qing Ai; Yuan-Jia Fan; Bih-Yaw Jin; Yuan-Chung Cheng

2014-04-19T23:59:59.000Z

444

Coulomb explosion effect and the maximum energy of protons accelerated by high-power lasers  

Science Journals Connector (OSTI)

The acceleration of light ions (protons) through the interaction of a high-power laser pulse with a double-layer target is theoretically studied by means of two-dimensional particle-in-cell simulations and a one-dimensional analytical model. It is shown that the maximum energy acquired by the accelerated light ions (protons) depends on the physical characteristics of a heavy-ion layer (electron-ion mass ratio and effective charge state of the ions). In our theoretical model, the hydrodynamic equations for both electron and heavy-ion species are solved and the test-particle approximation for the light ions (protons) is applied. The heavy-ion motion is found to modify the longitudinal electric field distribution, thus changing the acceleration conditions for the protons.

E. Fourkal; I. Velchev; C.-M. Ma

2005-03-25T23:59:59.000Z

445

Sequential ionization and energy gain of bound electrons in classical modeling of atoms in strong laser fields  

Science Journals Connector (OSTI)

Classical mechanics and classical ensembles have provided numerous insights into the dynamics of strong-field double ionization. In this paper, we show that in classical multidimensional modeling, the laser intensity at which sequential ionization begins to dominate depends on the softening of the interaction between the electron and nucleus. We show that an unsoftened interaction in two or three dimensions can lead to classical orbits in which an electron can start deep in the nuclear potential-energy well, gain energy from the oscillating laser field, and ionize over the barrier without any recollision. We discuss how this energy gain occurs, with the electron orbit favoring one side of the nucleus or the other, depending on which side corresponds with the rising potential-energy curve.

S. L. Haan; N. A. Danks; K. N. Shomsky

2012-09-18T23:59:59.000Z

446

Modeling Resource, Infrastructure, and Policy Cost Layers for Optimizing Renewable Energy Investment and Deployment  

SciTech Connect (OSTI)

This paper presents a framework for creating a common spatial canvass that can bring together considerations of resource availability, infrastructure reliability, and development costs while strategizing renewable energy investment. We describe the underlying models and methodologies that annotate an investment plan for potential sites over a time-period with costs and constraints which may be imposed on distance from infrastructure, system impact on infrastructure, and policy incentives. The framework is intended as an enabler for visualization, optimization and decision making across diverse dimensions while searching for lucrative investment-plans.

Sukumar, Sreenivas R [ORNL] [ORNL; Olama, Mohammed M [ORNL] [ORNL; Shankar, Mallikarjun [ORNL] [ORNL; Hadley, Stanton W [ORNL] [ORNL; Nutaro, James J [ORNL] [ORNL; Protopopescu, Vladimir A [ORNL] [ORNL; Malinchik, Sergey [Lockheed Martin Corporation] [Lockheed Martin Corporation; Ives, Barry [Lockheed Martin Corporation] [Lockheed Martin Corporation

2010-01-01T23:59:59.000Z

447

Performance of solenoids versus quadrupoles in focusing and energy selection of laser accelerated protons  

Science Journals Connector (OSTI)

Using laser accelerated protons or ions for various applications—for example in particle therapy or short-pulse radiographic diagnostics—requires an effective method of focusing and energy selection. We derive an analytical scaling for the performance of a solenoid compared with a doublet/triplet as function of the energy, which is confirmed by TRACEWIN simulations. Generally speaking, the two approaches are equivalent in focusing capability, if parameters are such that the solenoid length approximately equals its diameter. The scaling also shows that this is usually not the case above a few MeV; consequently, a solenoid needs to be pulsed or superconducting, whereas the quadrupoles can remain conventional. It is also important that the transmission of the triplet is found only 25% lower than that of the equivalent solenoid. Both systems are equally suitable for energy selection based on their chromatic effect as is shown using an initial distribution following the RPA simulation model by Yan et al. [Phys. Rev. Lett. 103, 135001 (2009].

Ingo Hofmann

2013-04-03T23:59:59.000Z

448

Distribution expansion planning considering reliability and security of energy using modified PSO (Particle Swarm Optimization) algorithm  

Science Journals Connector (OSTI)

Abstract Distribution feeders and substations need to provide additional capacity to serve the growing electrical demand of customers without compromising the reliability of the electrical networks. Also, more control devices, such as DG (Distributed Generation) units are being integrated into distribution feeders. Distribution networks were not planned to host these intermittent generation units before construction of the systems. Therefore, additional distribution facilities are needed to be planned and prepared for the future growth of the electrical demand as well as the increase of network hosting capacity by DG units. This paper presents a multiobjective optimization algorithm for the MDEP (Multi-Stage Distribution Expansion Planning) in the presence of \\{DGs\\} using nonlinear formulations. The objective functions of the MDEP consist of minimization of costs, END (Energy-Not-Distributed), active power losses and voltage stability index based on SCC (Short Circuit Capacity). A MPSO (modified Particle Swarm Optimization) algorithm is developed and used for this multiobjective MDEP optimization. In the proposed MPSO algorithm, a new mutation method is implemented to improve the global searching ability and restrain the premature convergence to local minima. The effectiveness of the proposed method is tested on a typical 33-bus test system and results are presented.

Jamshid Aghaei; Kashem M. Muttaqi; Ali Azizivahed; Mohsen Gitizadeh

2014-01-01T23:59:59.000Z

449

Modeling of 10 GeV-1 TeV laser-plasma accelerators using Lorentz boosted simulations  

E-Print Network [OSTI]

Modeling of 10 GeV-1 TeV laser-plasma accelerators using Lorentz boosted simulations J.-L. Vay,1,a-plasma wakefield accelerators in an optimal frame of reference [J.-L. Vay, Phys. Rev. Lett. 98, 130405 (2007 of plasma accelerators to very high energies and accurately models the laser evolution and the accelerated

Geddes, Cameron Guy Robinson

450

Optimizing Energy Savings from Direct-DC in U.S. Residential Buildings  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Optimizing Energy Savings from Direct-DC in U.S. Residential Buildings Optimizing Energy Savings from Direct-DC in U.S. Residential Buildings Title Optimizing Energy Savings from Direct-DC in U.S. Residential Buildings Publication Type Report LBNL Report Number LBNL-5193E Year of Publication 2011 Authors Garbesi, Karina, Vagelis Vossos, Alan H. Sanstad, and Gabriel Burch Document Number LBNL-5193E Pagination 59 Date Published October Publisher Lawrence Berkeley National Laboratory City Berkeley Abstract An increasing number of energy efficient appliances operate on direct current (DC) internally, offering the potential to use DC from renewable energy systems directly and avoiding the losses inherent in converting power to alternating current (AC) and back. This paper investigates that potential for net-metered residences with on-site photovoltaics (PV) by modeling the net power draw of the 'direct-DC house' with respect to today's typical configuration, assuming identical DC-internal loads. Power draws were modeled for houses in 14 U.S. cities, using hourly, simulated PV-system output and residential loads. The latter were adjusted to reflect a 33% load reduction, representative of the most efficient DC-internal technology, based on an analysis of 32 electricity end-uses. The model tested the effect of climate, electric vehicle (EV) loads, electricity storage, and load shifting on electricity savings; a sensitivity analysis was conducted to determine how future changes in the efficiencies of power system components might affect savings potential. Based on this work, we estimate that net-metered PV residences could save 5% of their total electricity load for houses without storage and 14% for houses with storage. Based on residential PV penetration projections for year 2035 obtained from the National Energy Modeling System (2.7% for the reference case and 11.2% for the extended policy case), direct-DC could save the nation 10 trillion Btu (without storage) or 40 trillion Btu (with storage). Shifting the cooling load by two hours earlier in the day (pre-cooling) has negligible benefits for energy savings. Direct-DC provides no energy savings benefits for EV charging, to the extent that charging occurs at night. However, if charging occurred during the day, for example with employees charging while at work, the benefits would be large. Direct-DC energy savings are sensitive to power system and appliance conversion efficiencies but are not significantly influenced by climate. While direct-DC for residential applications will most likely arise as a spin-off of developments in the commercial sector-because of lower barriers to market entry and larger energy benefits resulting from the higher coincidence between load and insolation-this paper demonstrates that there are substantial benefits in the residential sector as well. Among residential applications, space cooling derives the largest energy savings from being delivered by a direct-DC system. It is the largest load for the average residence on a national basis and is particularly so in high-load regions. It is also the load with highest solar coincidence.

451

Predictive control and thermal energy storage for optimizing a multi-energy district boiler  

E-Print Network [OSTI]

and used when demand is high, instead of engaging the gas-fuel oil boiler. Keywords: multi-energy district believe that by 2015 the supply of oil and natural gas will be unable to keep up with demand [1 of La Rochelle (France) adding to the plant a controlled thermal storage tank. This plant supplies

Paris-Sud XI, Université de

452

Hypersonic gasdynamic laser system  

SciTech Connect (OSTI)

This patent describes a visible, or near to mid infra-red, hypersonic gas dynamic laser system. It comprises: a hypersonic vehicle for carrying the hypersonic gas dynamic laser system, and also providing high energy ram air for thermodynamic excitation and supply of the laser gas; a laser cavity defined within the hypersonic vehicle and having a laser cavity inlet for the laser cavity formed by an opening in the hypersonic vehicle, such that ram air directed through the laser cavity opening supports gas dynamic lasing operations at wavelengths less than 10.6{mu} meters in the laser cavity; and an optical train for collecting the laser radiation from the laser cavity and directing it as a substantially collimated laser beam to an output aperture defined by an opening in the hypersonic vehicle to allow the laser beam to be directed against a target.

Foreman, K.M.; Maciulaitis, A.

1990-05-22T23:59:59.000Z

453

Design of a Power Oscillation Damper for DFIG-based Wind Energy Conversion System Using Modified Particle Swarm Optimizer  

Science Journals Connector (OSTI)

This paper presents a method to design a Power Oscillation Damper (POD) for Double-Fed Induction Generator (DFIG) based Wind Energy Conversion System (WECS), operating with voltage control loop. Based on eigen values information from Small Signal Stability ... Keywords: Computational Intelligence, double fed induction generator, power oscillation damper, modified particle swarm optimizer, small signal stability analysis, wind energy conversion system

Huazhang Huang; C. Y. Chung

2012-05-01T23:59:59.000Z

454

Thermal properties optimization of envelope in energy-saving renovation of existing public buildings  

Science Journals Connector (OSTI)

Abstract The shape factor and windows-to-wall ratio are different from building to building. How to design the thermal properties of building envelope affects energy-saving renovation economy of existing public buildings. The limited heat consumption per unit volume and equivalent heat transfer coefficient of external windows and wall were proposed based on the prescription of China national standard “Design standard for energy efficiency of public buildings”(GB50189-2005) for envelope design. Mathematical model on economical thermal insulation thickness of building envelope and thermal properties optimizing of envelope were built considering the impact of house orientation, windows-to-wall ratio and types of windows. The model is verified to be feasible by an existing public building in Shenyang. The variation of windows-to-wall ratio for different orientation leads to the different economical thermal insulation thickness of building envelope and payback period. The project optimization design for envelope renovation could be determined by the technical and economic analysis considering the impact of house orientation, windows-to-wall ratio, types of insulation materials and windows.

Jianen Huang; Henglin Lv; Tao Gao; Wei Feng; Yanxia Chen; Tai Zhou

2014-01-01T23:59:59.000Z

455

The National Ignition Facility Status and Plans for Laser Fusion and High-Energy-Density Experimental Studies  

E-Print Network [OSTI]

The National Ignition Facility (NIF) currently under construction at the University of California Lawrence Livermore National Laboratory (LLNL) is a 192-beam, 1.8-megajoule, 500-terawatt, 351-nm laser for inertial confinement fusion (ICF) and high-energy-density experimental studies. NIF is being built by the Department of Energy and the National Nuclear Security Agency (NNSA) to provide an experimental test bed for the U.S. Stockpile Stewardship Program to ensure the country's nuclear deterrent without underground nuclear testing. The experimental program will encompass a wide range of physical phenomena from fusion energy production to materials science. Of the roughly 700 shots available per year, about 10% will be dedicated to basic science research. Laser hardware is modularized into line replaceable units (LRUs) such as deformable mirrors, amplifiers, and multi-function sensor packages that are operated by a distributed computer control system of nearly 60,000 control points. The supervisory control roo...

Moses, E I

2001-01-01T23:59:59.000Z

456

Inertial fusion energy issues of intense heavy ion and laser beams interacting with ionized matter studied at GSI-Darmstadt  

Science Journals Connector (OSTI)

European activities on inertial fusion energy are coordinated by “keep in touch activities” of the European Fusion Programme coordinated by the European Commission. There is no general inertial fusion program in Europe. Instead, a number of activities relevant to inertial fusion are carried out by university groups and research centers. The Helmholtz-Research Center GSI-Darmstadt (Gesellschaft für Schwerionenforschung) operates accelerator facilities which provide the highest intensity for heavy ion beams and therefore key issues of ion beam driven fusion can be addressed. In addition to the accelerator facilities, one high-energy laser system is available (nhelix: nanosecond high-energy laser for ion experiments) and another one is under construction (PHELIX: petawatt high-energy laser for ion experiments). The heavy ion synchrotron facility, SIS18 (Schwer-Ionen-Synchrotron 18) recently delivered an intense uranium beam that deposits about 1 kJ/g specific energy in solid matter. Using this beam, experiments have been performed where solid Pb- and Ta-targets have been heated to the level of 1 eV. Experiments to study interaction mechanism of heavy ion beams with matter have been continued and are reported here.

D.H.H. Hoffmann; A. Blazevic; S. Korostiy; P. Ni; S.A. Pikuz; B. Rethfeld; O. Rosmej; M. Roth; N.A. Tahir; S. Udrea; D. Varentsov; K. Weyrich; B.Yu. Sharkov; Y. Maron

2007-01-01T23:59:59.000Z

457

Building Distributed Energy Performance Optimization for China a Regional Analysis of Building Energy Costs and CO2 Emissions  

E-Print Network [OSTI]

optimizations. Technologies assessed include photovoltaics (PV), solar thermal, gas turbines, microturbines, fuel cells,

Feng, Wei

2013-01-01T23:59:59.000Z

458

Sensitivity to Dark Energy candidates by searching for four-wave mixing of high-intensity lasers in the vacuum  

E-Print Network [OSTI]

Theoretical challenges to understand Dark Matter and Dark Energy suggest the existence of low-mass and weakly coupling fields in the universe. The quasi-parallel photon-photon collision system (QPS) can provide chances to probe the resonant production of these light dark fields and the induced decay by the coherent nature of laser fields simultaneously. By focusing high-intensity lasers with different colors in the vacuum, new colors emerge as the signature of the interaction. Because four photons in the initial and final states interplay via the dark field exchange, this process is analogous to four-wave mixing in quantum optics, where the frequency sum and difference among the incident three waves generate the fourth wave with a new frequency via the nonlinear property of crystals. The interaction rate of the four-wave mixing process has the cubic dependence on the intensity of each wave. Therefore, if high-intensity laser fields are given, the sensitivity to the weakly coupling of dark fields to photons rapidly increases over the wide mass range below sub-eV. Based on the experimentally measurable photon energies and the linear polarization states, we formulate the relation between the accessible mass-coupling domains and the high-intensity laser parameters, where the effects of the finite spectrum width of pulse lasers are taken into account. The expected sensitivity suggests that we have a potential to explore interactions at the Super-Planckian coupling strength in the sub-eV mass range, if the cutting-edge laser technologies are properly combined.

Kensuke Homma

2012-11-12T23:59:59.000Z

459

Design guidelines for H-Darrieus wind turbines: Optimization of the annual energy yield  

Science Journals Connector (OSTI)

Abstract H-Darrieus wind turbines are gaining popularity in the wind energy market, particularly as they are thought to represent a suitable solution even in unconventional installation areas. To promote the diffusion of this technology, industrial manufacturers are continuously proposing new and appealing exterior solutions, coupled with tempting rated-power offers. The actual operating conditions of a rotor over a year can be, however, very different from the nominal one and strictly dependent on the features of the installation site. Based on these considerations, a turbine optimization oriented to maximize the annual energy yield, instead of the maximum power, is thought to represent a more interesting solution. With this goal in mind, 21,600 test cases of H-Darrieus rotors were compared on the basis of their energy-yield capabilities for different annual wind distributions in terms of average speed. The wind distributions were combined with the predicted performance maps of the rotors obtained with a specifically developed numerical code based on a Blade Element Momentum (BEM) approach. The influence on turbine performance of the cut-in speed was accounted for, as well as the limitations due to structural loads (i.e. maximum rotational speed and maximum wind velocity). The analysis, carried out in terms of dimensionless parameters, highlighted the aerodynamic configurations able to ensure the largest annual energy yield for each wind distribution and set of aerodynamic constraints.

Alessandro Bianchini; Giovanni Ferrara; Lorenzo Ferrari

2015-01-01T23:59:59.000Z

460

Study on optimization model of energy collection efficiency and its power generation benefit evaluation of landfill gas  

Science Journals Connector (OSTI)

An optimization model for joint biogas energy collection efficiency that targets the prediction model for landfill gas output dynamics and the optimization model for gas well output has been established. The model was used to comprehensively analyze and evaluate the collection efficiency of a landfill gas well together with the long-term monitoring the gas output of the gas well within Chenjiachong Landfill. The collection efficiency increased by more than 50% than the original collection of landfill biogas and the power generation efficiency increased more than two times after the reservoir area of the landfill was optimized and regulated.

Xue Qiang

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

The Effect of Laser Energy and Target–Substrate Distance on the Quality of CeO2 Seed Layer Deposited by PLD  

Science Journals Connector (OSTI)

In this work, CeO2...seed layers have been deposited on RABiTS substrates by pulsed laser deposition (PLD) in a reel-to-reel chamber. We have systematically investigated the effect of laser energy and target–subs...

Xiaokun Song; Dan Hong; Ying Wang…

2011-07-01T23:59:59.000Z

462

Quantitative determination of energy enhanced interlayer transport in pulsed laser deposition of SrTiO3  

Science Journals Connector (OSTI)

We show that the analysis of single-shot surface x-ray diffraction transients in terms of time-dependent coverages allows quantitative determination of interlayer transport in pulsed-laser deposition of SrTiO3. The fast interlayer transport during and immediately after the arrival of the laser plume and before crystallization represents the dominant mechanism for redistribution of the deposited material that is completed on a ?s-range or faster time scale. Following crystallization interlayer transport is more than four orders of magnitude slower because it is driven only by sluggish thermally activated processes, which represent a small fraction of total interlayer transport that decreases with increasing laser repetition rate. The analysis of growth kinetics shows that it is fast interlayer transport driven by hyperthermal energy species and not thermal annealing that governs layer completion that determines the growth mode and the formation of atomically sharp interfaces in pulsed-laser deposition of epitaxial oxide films and similar energy-enhanced growth processes.

Gyula Eres; J. Z. Tischler; C. M. Rouleau; P. Zschack; H. M. Christen; B. C. Larson

2011-11-28T23:59:59.000Z

463

Calculations for Ni-like soft x-ray lasers: Optimization for W (43.1 A?)  

Science Journals Connector (OSTI)

Near-optimum conditions for lasing in Ni-like W are calculated for a 90-?g/cm2 foil irradiated by a 2? (?=0.53 ?m), 2.3×1014-W/cm2, 550-ps trapezoidal pulse. The gain coefficient for the J=0–1, 4d-4p Ni-like transition at 43.1 A? is predicted to be 5.5 cm-1. The electron density and temperature are 2.5×1021 cm-3 and 860 eV at x-ray laser time.

S. Maxon; S. Dalhed; P. L. Hagelstein; R. A. London; B. J. MacGowan; M. D. Rosen; G. Charatis; G. Busch

1989-07-17T23:59:59.000Z

464

Laser Roadshow  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

outreach Laser Roadshow The NIF Laser Roadshow includes a number of interactive laser demonstrations (Laser Light Fountain, Laser DJ, and NIF "3D ride") that have traveled across...

465

Laser Diode Arrays - Designs and Production Techniques for Fusion Energy Power Plants  

Science Journals Connector (OSTI)

Novel laser diode array designs and manufacturing methods are discussed, with a focus on providing the lowest-cost solution for the specific application of DPSS pumping ...

Feeler, Ryan

466

Control of Greenhouse Gas Emissions by Optimal DER Technology Investment and Energy Management in Zero-Net-Energy Buildings  

E-Print Network [OSTI]

and Energy Management in Zero-Net-Energy Buildings Michaeland Energy Management in Zero-Net-Energy Buildings 1 Michaelgoal of achieving zero-net-energy commercial buildings (

Stadler, Michael

2010-01-01T23:59:59.000Z

467

A Full Demand Response Model in Co-Optimized Energy and  

SciTech Connect (OSTI)

It has been widely accepted that demand response will play an important role in reliable and economic operation of future power systems and electricity markets. Demand response can not only influence the prices in the energy market by demand shifting, but also participate in the reserve market. In this paper, we propose a full model of demand response in which demand flexibility is fully utilized by price responsive shiftable demand bids in energy market as well as spinning reserve bids in reserve market. A co-optimized day-ahead energy and spinning reserve market is proposed to minimize the expected net cost under all credible system states, i.e., expected total cost of operation minus total benefit of demand, and solved by mixed integer linear programming. Numerical simulation results on the IEEE Reliability Test System show effectiveness of this model. Compared to conventional demand shifting bids, the proposed full demand response model can further reduce committed capacity from generators, starting up and shutting down of units and the overall system operating costs.

Liu, Guodong [ORNL; Tomsovic, Kevin [University of Tennessee, Knoxville (UTK)

2014-01-01T23:59:59.000Z

468

All-laser-driven, MeV-energy X-ray source for detection of SNM Sudeep Banerjee, Nathan Powers, Vidya Ramanathan, Nathaniel Cunningham, Nate Chandler-Smith, Shouyuan  

E-Print Network [OSTI]

All-laser-driven, MeV-energy X-ray source for detection of SNM Sudeep Banerjee, Nathan Powers, MI 48109. A quasi-monoenergetic MeV x-ray source based on laser-driven electron acceleration per laser shot. Characterization of such a high-flux high energy x-ray beam is in progress. Quasi

Umstadter, Donald

469

Intensity and energy modulated radiotherapy with proton beams: Variables affecting optimal prostate plan  

Science Journals Connector (OSTI)

Inverse planning for intensity- and energy-modulated radiotherapy (IEMRT) with proton beams involves the selection of (i) the relative importance factors to control the relative importance of the target and sensitive structures (ii) an appropriate energy resolution to achieve an acceptable depth modulation (iii) an appropriate beamlet width to modulate the beam laterally and (iv) a sufficient number of beams and their orientations. In this article we investigate the influence of these variables on the optimized dose distribution of a simulated prostate cancer IEMRT treatment. Good dose conformation for this prostate case was achieved using a constellation of I factors for the target rectum bladder and normal tissues of 500 50 15 and 1 respectively. It was found that for an active beam delivery system the energy resolution should be selected on the basis of the incident beams’ energy spread (? E ) and the appropriate energy resolution varied from 1 MeV at ? E =0.0? to ?5? MeV at ? E =2.0? MeV . For a passive beam delivery system the value of the appropriate depth resolution for inverse planning may not be critical as long as the value chosen is at least equal to one-half the FWHM of the primary beam Bragg peak. Results indicate that the dose grid element dimension should be equal to or no less than 70% of the beamlet width. For this prostate case we found that a maximum of three to four beam ports is required since there was no significant advantage to using a larger number of beams. However for a small number (?4) of beams the selection of beam orientations while having only a minor effect on target coverage strongly influenced the sensitive structure sparing and normal tissue integral dose.

Collins Yeboah; George A. Sandison; Alexei V. Chvetsov

2002-01-01T23:59:59.000Z

470

Conceptual Design of Optimized Fossil Energy Systems with Capture and Sequestration of Carbon Dioxide  

SciTech Connect (OSTI)

In this final report, we describe research results from Phase 2 of a technical/economic study of fossil hydrogen energy systems with carbon dioxide (CO{sub 2}) capture and storage (CCS). CO{sub 2} capture and storage, or alternatively, CO{sub 2} capture and sequestration, involves capturing CO{sub 2} from large point sources and then injecting it into deep underground reservoirs for long-term storage. By preventing CO{sub 2} emissions into the atmosphere, this technology has significant potential to reduce greenhouse gas (GHG) emissions from fossil-based facilities in the power and industrial sectors. Furthermore, the application of CCS to power plants and hydrogen production facilities can reduce CO{sub 2} emissions associated with electric vehicles (EVs) and hydrogen fuel cell vehicles (HFCVs) and, thus, can also improve GHG emissions in the transportation sector. This research specifically examines strategies for transitioning to large-scale coal-derived energy systems with CCS for both hydrogen fuel production and electricity generation. A particular emphasis is on the development of spatially-explicit modeling tools for examining how these energy systems might develop in real geographic regions. We employ an integrated modeling approach that addresses all infrastructure components involved in the transition to these energy systems. The overall objective is to better understand the system design issues and economics associated with the widespread deployment of hydrogen and CCS infrastructure in real regions. Specific objectives of this research are to: Develop improved techno-economic models for all components required for the deployment of both hydrogen and CCS infrastructure, Develop novel modeling methods that combine detailed spatial data with optimization tools to explore spatially-explicit transition strategies, Conduct regional case studies to explore how these energy systems might develop in different regions of the United States, and Examine how the design and cost of coal-based H{sub 2} and CCS infrastructure depend on geography and location.

Nils Johnson; Joan Ogden

2010-12-31T23:59:59.000Z

471

Diode-end-pumped double Nd:YLF slab laser with high energy, short pulse width, and diffraction-limited quality  

Science Journals Connector (OSTI)

We have developed a novel electro-optic Q-switched diode-end-pumped solid slab laser that combines high energy, short pulse width, high repetition rates, and...

Li, Daijun; Ma, Zhe; Haas, Rüdiger; Schell, Alexander; Zhu, Peng; Shi, Peng; Du, Keming

2008-01-01T23:59:59.000Z

472

Technique of Calibration of a Working Standard of the Energy Unit of Narrow-Pulse Laser Radiation and Results of Trial Use of the Standard  

Science Journals Connector (OSTI)

Questions related to the design and testing of a technique of calibrating a working energy unit of narrow-pulse laser radiation by means of an electrical working system and determining the degree of equivalenc...

I. V. Mnev; M. V. Ulanovskii

2002-06-01T23:59:59.000Z

473

The World's First Free-Electron X-ray Laser | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

First Free-Electron X-ray Laser First Free-Electron X-ray Laser The World's First Free-Electron X-ray Laser August 17, 2010 - 6:19pm Addthis The World's First Free-Electron X-ray Laser John Schueler John Schueler Former New Media Specialist, Office of Public Affairs Yesterday, Secretary Chu participated in the dedication of the world's first free-electron and most powerful X-ray laser, the Linac Coherent Light Source (LCLS). In light of this occasion (pun intended), we posted an in-depth look at the innovative nature of this new instrument and its potential to tackle some of life's biggest mysteries. The Secretary seemed just as geeked about the possibilities of the LCLS, stating that "this is a new instrument that will enable us to see the structure of materials that we could not determine by any other means ... Knowing those

474

Optimization of Ventilation Energy Demands and Indoor Air Quality in High-Performance Homes  

SciTech Connect (OSTI)

High-performance homes require that ventilation energy demands and indoor air quality (IAQ) be simultaneously optimized. We attempted to bridge these two areas by conducting tests in a research house located in Oak Ridge, TN, that was 20 months old, energy-efficient (i.e., expected to consume 50% less energy than a house built per the 2006 IRC), tightly-built (i.e., natural ventilation rate ~0.02 h-1), unoccupied, and unfurnished. We identified air pollutants of concern in the test home that could generally serve as indicators of IAQ, and conduced field experiments and computer simulations to determine the effectiveness and energy required by various techniques that lessened the concentration of these contaminants. Formaldehyde was selected as the main pollutant of concern among the contaminants that were sampled in the initial survey because it was the only compound that showed concentrations that were greater than the recommended exposure levels. Field data indicate that concentrations were higher during the summer primarily because emissions from sources rise with increases in temperature. Furthermore, supply ventilation and gas-phase filtration were effective means to reduce formaldehyde concentrations; however, exhaust ventilation had minimal influence on this pollutant. Results from simulations suggest that formaldehyde concentrations obtained while ventilating per ASHRAE 62.2-2010 could be decreased by about 20% from May through September through three strategies: 1) increasing ASHRAE supply ventilation by a factor of two, 2) reducing the thermostat setpoint from 76 to 74 F, or 3) running a gas-phase filtration system while decreasing supply ventilation per ASHRAE by half. In the mixed-humid climate of Oak Ridge, these strategies caused increases in electricity cost of ~$5 to ~$15/month depending on outdoor conditions.

Hun, Diana E [ORNL; Jackson, Mark C [University of Texas at Austin; Shrestha, Som S [ORNL

2014-01-01T23:59:59.000Z

475

Optimal conditions for shock ignition of scaled cryogenic deuterium-tritium targets  

SciTech Connect (OSTI)

Within the framework of the shock-ignition (SI) scheme, ignition conditions are reached following the separation of the compression and heating phases. First, the shell is compressed at a sub-ignition implosion velocity; then an intense laser spike is launched at the end of the main drive, leading to the propagation of a strong shock through the precompressed fuel. The minimal laser energy required for ignition of scaled deuterium-tritium (DT) targets is assessed by calculations. A semi-empiric model describing the ignitor shock generation and propagation in the fuel assembly is defined. The minimal power needed in the laser spike pulse to achieve ignition is derived from the hydrodynamic model. Optimal conditions for ignition of scaled targets are explored in terms of laser intensity, shell-implosion velocity, and target scale range for the SI process. Curves of minimal laser requirements for ignition are plotted in the energy-power diagram. The most economic and reliable conditions for ignition of a millimeter DT target are observed in the 240- to 320-km/s implosion velocity range and for the peak laser intensity ranging from {approx}2 Multiplication-Sign 10{sup 15} W/cm{sup 2} up to 5 Multiplication-Sign 10{sup 15} W/cm{sup 2}. These optimal conditions correspond to shock-ignited targets for a laser energy of {approx}250 kJ and a laser power of 100 to 200 TW. Large, self-ignited targets are particularly attractive by offering ignition at a lower implosion velocity and a reduced laser intensity than for conventional ignition. The SI scheme allows for the compression and heating phases of the high power laser energy research facility target to be performed at a peak laser intensity below 10{sup 16} W/cm{sup 2}. A better control of parametric and hydrodynamic instabilities within the SI scheme sets it as an optimal and reliable approach to attain ignition of large targets.

Lafon, M. [Laboratory for Laser Energetics and Fusion Science Center, University of Rochester, Rochester, New York 14623 (United States); University of Bordeaux-CNRS-CEA, Centre Lasers Intenses et Applications, UMR 5107, 33405 Talence (France); Ribeyre, X.; Schurtz, G. [University of Bordeaux-CNRS-CEA, Centre Lasers Intenses et Applications, UMR 5107, 33405 Talence (France)

2013-02-15T23:59:59.000Z

476

Generation of electron beams from a laser-based advanced accelerator at Shanghai Jiao Tong University  

E-Print Network [OSTI]

At Shanghai Jiao Tong University, we have established a research laboratory for advanced acceleration research based on high-power lasers and plasma technologies. In a primary experiment based on the laser wakefield acceleration (LWFA) scheme, multi-hundred MeV electron beams having a reasonable quality are generated using 20-40 TW, 30 femtosecond laser pulses interacting independently with helium, neon, nitrogen and argon gas jet targets. The laser-plasma interaction conditions are optimized for stabilizing the electron beam generation from each type of gas. The electron beam pointing angle stability and divergence angle as well as the energy spectra from each gas jet are measured and compared.

Elsied, Ahmed M M; Li, Song; Mirzaie, Mohammad; Sokollik, Thomas; Zhang, Jie

2014-01-01T23:59:59.000Z

477

OpenPEOPLE D2.8 Ergonomic Page 1/37 Open Power and Energy Optimization Platform and Estimator  

E-Print Network [OSTI]

OpenPEOPLE D2.8­ Ergonomic Page 1/37 OpenPEOPLE Open Power and Energy Optimization Platform and Estimator Internal Deliverable 2.8 Ergonomics Document Manager Contributors Checked by Name Jonathan PONROY ergonomic for the OpenPEOPLE software platform. inria-00624000,version1-16Sep2011 #12;OpenPEOPLE D2

Paris-Sud XI, Université de

478

Abstract --The growth of non-conventional renewable energies involves a new challenge for optimal network expansion. A better  

E-Print Network [OSTI]

1 Abstract -- The growth of non-conventional renewable energies involves a new challenge for optimal network expansion. A better integration of renewables will be allowed by determining transmission assets necessary for a reliable, affordable and sustainable operation, and even more important

Catholic University of Chile (Universidad Católica de Chile)

479

Cost and Energy Savings Using an Optimal Design of Reverse Osmosis Membrane Pretreatment for Dilute Bioethanol Purification  

Science Journals Connector (OSTI)

Cost and Energy Savings Using an Optimal Design of Reverse Osmosis Membrane Pretreatment for Dilute Bioethanol Purification ... All equipment costs and sizing are modeled using the correlations from Seider et al.(52) while the RO membrane cost is from Baker and Lokhandwala. ...

Pakkapol Kanchanalai; Ryan P. Lively; Matthew J. Realff; Yoshiaki Kawajiri

2013-07-02T23:59:59.000Z

480

Optimizing the Low Temperature Cooling Energy Supply: Experimental Performance of an Absorption Chiller, a Compression Refrigeration Machine and Direct Cooling - a Comparison  

E-Print Network [OSTI]

A strategy to optimize the low temperature cooling energy supply of a newly build office building is discussed against the background of a changing energy system. It is focused on, what production way - Direct Cooling, the Compression Refrigeration...

Uhrhan, S.; Gerber, A.

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "laser energy optimization" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

LASER SPECTROSCOPY AND TRACE ELEMENT ANALYSIS Chapter from the Energy and Environment Division Annual Report 1980  

E-Print Network [OSTI]

of Solar Energy, Photovoltaic Energy Systems Division, U.S.methods for energy conversion such as photovoltaic solar

Various, Authors

2014-01-01T23:59:59.000Z

482

Improvements to laser wakefield accelerated electron beam stability, divergence, and energy spread using three-dimensional printed two-stage gas cell targets  

SciTech Connect (OSTI)

High intensity, short pulse lasers can be used to accelerate electrons to ultra-relativistic energies via laser wakefield acceleration (LWFA) [T. Tajima and J. M. Dawson, Phys. Rev. Lett. 43, 267 (1979)]. Recently, it was shown that separating the injection and acceleration processes into two distinct stages could prove beneficial in obtaining stable, high energy electron beams [Gonsalves et al., Nat. Phys. 7, 862 (2011); Liu et al., Phys. Rev. Lett. 107, 035001 (2011); Pollock et al., Phys. Rev. Lett. 107, 045001 (2011)]. Here, we use a stereolithography based 3D printer to produce two-stage gas targets for LWFA experiments on the HERCULES laser system at the University of Michigan. We demonstrate substantial improvements to the divergence, pointing stability, and energy spread of a laser wakefield accelerated electron beam compared with a single-stage gas cell or gas jet target.

Vargas, M.; Schumaker, W.; He, Z.-H.; Zhao, Z.; Behm, K.; Chvykov, V.; Hou, B.; Krushelnick, K.; Maksimchuk, A.; Yanovsky, V.; Thomas, A. G. R., E-mail: agrt@umich.edu [Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109 (United States)

2014-04-28T23:59:59.000Z

483

Light Wars: The Bright Future of Laser Weapons  

E-Print Network [OSTI]

Implications of Laser Weapons. Northrop Grumman. http://Goda. 2004. High energy laser weapons: technology overview.The Bright Future of Laser Weapons WAR TECH SPRING WAR TECH

Mistry, Hemma

2009-01-01T23:59:59.000Z

484

Ultrafast Diagnostics for Electron Beams from Laser Plasma Accelerators  

E-Print Network [OSTI]

for Laser Plasma Accelerators," in this proceedings, 2010.Based Laser Wakefield Accelerator Electron Beam EnergyMotion in a Laser-Plasma Accelerator," in this proceedings,

Matlis, N. H.

2011-01-01T23:59:59.000Z

485

Energy systems planning and GHG-emission control under uncertainty in the province of Liaoning, China – A dynamic inexact energy systems optimization model  

Science Journals Connector (OSTI)

Abstract In this study, a dynamic interval-parameter optimization model (DIP-REM) has been developed for supporting long-term energy systems planning in association with GHG mitigation in the region of Liaoning province. The model can describe Liaoning province energy planning systems as networks of a series of energy flows, transferring extracted/imported energy resources to end users through a variety of conversion and transmission technologies over a number of periods and address the problem of GHG-emission reduction within a general energy planning systems framework under uncertainty. Two scenarios (including a reference case) are considered corresponding to different GHG-emission mitigation levels for in-depth analysis of interactions existing among energy, socio-economy and environment in the Liaoning province. Useful solutions for Liaoning province energy planning systems have been generated, reflecting trade-offs among energy-related, environmental and economic considerations. The results can not only provide optimal energy resource/service allocation and capacity-expansion plans, but also help decision-makers identify desired policies for GHG mitigation with a cost-effective manner in the region of Liaoning province. Thus, it can be used by decision makers as an effective technique in examining and visualizing impacts of energy and environmental policies, regional development strategies and emission reduction measures within an integrated and dynamic framework.

J. Liu; Q.G. Lin; G.H. Huang; Q. Wu; H.P. Li

2013-01-01T23:59:59.000Z

486

Optimization of Operating Parameters for Minimum Mechanical Specific Energy in Drilling  

SciTech Connect (OSTI)

Efficiency in drilling is measured by Mechanical Specific Energy (MSE). MSE is the measure of the amount of energy input required to remove a unit volume of rock, expressed in units of energy input divided by volume removed. It can be expressed mathematically in terms of controllable parameters; Weight on Bit, Torque, Rate of Penetration, and RPM. It is well documented that minimizing MSE by optimizing controllable factors results in maximum Rate of Penetration. Current methods for computing MSE make it possible to minimize MSE in the field only through a trial-and-error process. This work makes it possible to compute the optimum drilling parameters that result in minimum MSE. The parameters that have been traditionally used to compute MSE are interdependent. Mathematical relationships between the parameters were established, and the conventional MSE equation was rewritten in terms of a single parameter, Weight on Bit, establishing a form that can be minimized mathematically. Once the optimum Weight on Bit was determined, the interdependent relationship that Weight on Bit has with Torque and Penetration per Revolution was used to determine optimum values for those parameters for a given drilling situation. The improved method was validated through laboratory experimentation and analysis of published data. Two rock types were subjected to four treatments each, and drilled in a controlled laboratory environment. The method was applied in each case, and the optimum parameters for minimum MSE were computed. The method demonstrated an accurate means to determine optimum drilling parameters of Weight on Bit, Torque, and Penetration per Revolution. A unique application of micro-cracking is also presented, which demonstrates that rock failure ahead of the bit is related to axial force more than to rotation speed.

Hamrick, Todd

2011-05-25T23:59:59.000Z

487

Stimulated scattering in laser driven fusion and high energy density physics experiments  

SciTech Connect (OSTI)

In laser driven fusion and high energy density physics experiments, one often encounters a k?{sub D} range of 0.15?

Yin, L., E-mail: lyin@lanl.gov; Albright, B. J.; Rose, H. A.; Montgomery, D. S.; Kline, J. L.; Finnegan, S. M.; Bergen, B.; Bowers, K. J. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Kirkwood, R. K.; Milovich, J. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

2014-09-15T23:59:59.000Z

488

Topical hyperbaric oxygen and low energy laser for the treatment of diabetic foot ulcers  

Science Journals Connector (OSTI)

Fifty patients with chronic diabetic foot ulcers in whom conventional therapy had failed ... oxygen alone or in combination with a low power laser are valuable adjuvants to conventional therapy for diabetic foot

Z. Landau

1998-02-01T23:59:59.000Z

489

A CW normal-conductive RF gun for free electron laser and energy recovery linac applications  

E-Print Network [OSTI]

Todd, State-of-the art electron guns and injector de- signs,7] Summary of working group on guns and injectors, 41st Ad-A CW normal-conductive RF gun for free electron laser and

Baptiste, Kenneth

2009-01-01T23:59:59.000Z

490

Integrated process modeling for the laser inertial fusion Energy (LIFE) generation system  

SciTech Connect (OSTI)

A concept for a new fusion-fission hybrid technology is being developed at Lawrence Livermore National Laboratory. The primary application of this technology is base-load electrical power generation. However, variants of the baseline technology can be used to 'burn' spent nuclear fuel from light water reactors or to perform selective transmutation of problematic fission products. The use of a fusion driver allows very high burn-up of the fission fuel, limited only by the radiation resistance of the fuel form and system structures. As a part of this process, integrated process models have been developed to aid in concept definition. Several models have been developed. A cost scaling model allows quick assessment of design changes or technology improvements on cost of electricity. System design models are being used to better understand system interactions and to do design trade-off and optimization studies. Here we describe the different systems models and present systems analysis results. Different market entry strategies are discussed along with potential benefits to US energy security and nuclear waste disposal. Advanced technology options are evaluated and potential benefits from additional R&D targeted at the different options is quantified.

Meier, W R; Anklam, T M; Erlandson, A C; Miles, R R; Simon, A J; Sawicki, R; Storm, E

2009-10-22T23:59:59.000Z