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1

Control console replacement at the WPI Reactor  

SciTech Connect

With partial funding from the Department of Energy (DOE) University Reactor Instrumentation Upgrade Program (DOE Grant No. DE-FG02-90ER12982), the original control console at the Worcester Polytechnic Institute (WPI) Reactor has been replaced with a modern system. The new console maintains the original design bases and functionality while utilizing current technology. An advanced remote monitoring system has been added to augment the educational capabilities of the reactor. Designed and built by General Electric in 1959, the open pool nuclear training reactor at WPI was one of the first such facilities in the nation located on a university campus. Devoted to undergraduate use, the reactor and its related facilities have been since used to train two generations of nuclear engineers and scientists for the nuclear industry. The reactor power level was upgraded from 1 to 10 kill in 1969, and its operating license was renewed for 20 years in 1983. In 1988, the reactor was converted to low enriched uranium. The low power output of the reactor and ergonomic facility design make it an ideal tool for undergraduate nuclear engineering education and other training.

1992-01-01T23:59:59.000Z

2

numix.dvi  

NLE Websites -- All DOE Office Websites (Extended Search)

Neutrino Neutrino mixing 1 1. NEUTRINO MASS, MIXING, AND OSCILLATIONS Updated May 2012 by K. Nakamura (Kavli IPMU (WPI), U. Tokyo, KEK) and S.T. Petcov (SISSA/INFN Trieste, Kavli IPMU (WPI), U. Tokyo, Bulgarian Academy of Sciences). The experiments with solar, atmospheric, reactor and accelerator neutrinos have provided compelling evidences for oscillations of neutrinos caused by nonzero neutrino masses and neutrino mixing. The data imply the existence of 3-neutrino mixing in vacuum. We review the theory of neutrino oscillations, the phenomenology of neutrino mixing, the problem of the nature - Dirac or Majorana, of massive neutrinos, the issue of CP violation in the lepton sector, and the current data on the neutrino masses and mixing parameters. The open questions and the main goals of future research in the field of neutrino mixing and oscillations are outlined. 1.1. Introduction:

3

numixrpp.dvi  

NLE Websites -- All DOE Office Websites (Extended Search)

3 3 by K. Nakamura (Kavli IPMU (WPI), U. Tokyo, KEK), and S.T. Petcov (SISSA/INFN Trieste, Kavli IPMU (WPI), U. Tokyo, Bulgarian Academy of Sciences). The experiments with solar, atmospheric, reactor and accelerator neutrinos have provided compelling evidences for oscillations of neutrinos caused by nonzero neutrino masses and neutrino mixing. The data imply the existence of 3-neutrino mixing in vacuum. We review the theory of neutrino oscillations, the phenomenology of neutrino mixing, the problem of the nature - Dirac or Majorana, of massive neutrinos, the issue of CP violation in the lepton sector, and the current data on the neutrino masses and mixing parameters. The open questions and the main goals of future research in the field of neutrino mixing and oscillations are outlined. 13.1. Introduction: Massive neutrinos and neutrino mixing It is a well-established experimental

4

numixrpp.dvi  

NLE Websites -- All DOE Office Websites (Extended Search)

2 2 by K. Nakamura (Kavli IPMU (WPI), U. Tokyo, KEK) and S.T. Petcov (SISSA/INFN Trieste, Kavli IPMU (WPI), U. Tokyo, Bulgarian Academy of Sciences). The experiments with solar, atmospheric, reactor and accelerator neutrinos have provided compelling evidences for oscillations of neutrinos caused by nonzero neutrino masses and neutrino mixing. The data imply the existence of 3-neutrino mixing in vacuum. We review the theory of neutrino oscillations, the phenomenology of neutrino mixing, the problem of the nature - Dirac or Majorana, of massive neutrinos, the issue of CP violation in the lepton sector, and the current data on the neutrino masses and mixing parameters. The open questions and the main goals of future research in the field of neutrino mixing and oscillations are outlined. 13.1. Introduction: Massive neutrinos and neutrino mixing It is a well-established experimental

5

(WPI-iCeMS) Pure Nano Drugs*  

E-Print Network (OSTI)

(WPI-iCeMS) SN-38 50 nm * Pure Nano Drugs* SN-38 10 HepG2* JST (-STEP Permeation and Retention (EPR)* EPR 20100 nm SN-38 SN-38 * SN-38 * SN-38 20 SN-38 Pure Nano Drugs

Takada, Shoji

6

Fermilab Today  

NLE Websites -- All DOE Office Websites (Extended Search)

in the middle of Orion's dagger. In the News Strict limit on CPT violation from gamma-ray bursts From Kavli IPMU, Dec. 7, 2012 Kenji Toma (Osaka Univ.), Shinji Mukohyama (Kavli...

7

WPI-CS-TR-00-26 December 2000 TxnWrap: A Transactional Approach to Data Warehouse  

E-Print Network (OSTI)

01609-2280 (junchen j chenst j rundenst)@cs.wpi.edu Abstract A Data Warehouse Management System (DWMS warehousing system. Experiments comparing maintenance performance with and without TxnWrap enabled con#12;rm Dynamic Data Warehouse Maintenance (DyDa) system developed at WPI [5]. The basic DyDa system uses SWEEP [1

8

Particle Physics Today Hitoshi Murayama (IPMU Tokyo, Berkeley)  

E-Print Network (OSTI)

because this is the relevant energy scale #12;37 Three Directions #12;37 Three Directions History repeats exist? 2 #12;#12;We are interested in things we don't see #12;4 Cosmic Energy budget stars baryon neutrinos dark matter dark energy #12;4 Cosmic Energy budget Stars and galaxies are only ~0.5% stars baryon

Murayama, Hitoshi

9

Microblaze MCS Tutorial Jim Duckworth, WPI Microblaze MCS Tutorial for Xilinx ISE 14.2  

E-Print Network (OSTI)

Tool to Use BMM: · If the Tcl Console is not visible, select View -> Panels -> Tcl Console in the menu. · In the Tcl Console type the following TCL script command: source ipcore_dir/microblaze_mcs_setup.tcl You should see: Command>source ipcore_dir/microblaze_mcs_setup.tcl microblaze_mcs_setup: Found 1 Micro

Huang, Xinming

10

WPI centers on March 11, 2011 and aftermath Toshio Kuroki, MD, PhD  

E-Print Network (OSTI)

the third disaster; the nuclear power plants in Fukushima became out of control totally and nuclear fuel, the biggest tsunami barriers particularly in these areas and warning systems by catching primary (P) wave City Distance from Fukushima nuclear plants Environmental dose AIMR Sendai 94 km 0.07 Sv/h MANA Tsukuba

Takada, Shoji

11

--No Title--  

NLE Websites -- All DOE Office Websites (Extended Search)

construction and commissioning of XMASS 800kg detector Jing Liu IPMU, Kamioka Observatory Abstract: The XMASS 800kg detector, aiming primarily at the dark matter search, is...

12

Amoeba-Based Fuzzy Computing for Uncertain Knowledge Processing  

E-Print Network (OSTI)

(e.g., car- bon nanotube transistors), molecular (e.g., or- ganic), DNA, optical, micro-Aciego, J.L. Verdegay (eds): Proceedings of IPMU'08, pp. 792­797 Torremolinos (M´alaga), June 22­27, 2008

Munakata, Toshinori

13

SLAC National Accelerator Laboratory - SLAC Scientists Win Prestigious...  

NLE Websites -- All DOE Office Websites (Extended Search)

known as "external seeding" for improving the function of X-ray free electron lasers. Leonardo Senatore, a theoretical physicist with the SLAC-Stanford Kavli Institute for...

14

SLAC National Accelerator Laboratory - Turning Data Into Wild...  

NLE Websites -- All DOE Office Websites (Extended Search)

researchers at KIPAC, the Kavli Institute for Particle Astrophysics andCosmology, at SLAC National Accelerator Laboratory and StanfordUniversity. Rather than relying purely...

15

NIST WTC Public-Private Response Plan  

Science Conference Proceedings (OSTI)

... IAFSS, ASME, LANL, MIT, Princeton, Northwestern, UT Austin, Georgia Tech, Penn State, Drexel, Wharton, Columbia, Lehigh, UMd, WPI, ...

2012-10-17T23:59:59.000Z

16

WTC Technical Conference  

Science Conference Proceedings (OSTI)

... IAFSS, ASME, LANL, MIT, Princeton, Northwestern, UT Austin, Georgia Tech, Penn State, Drexel, Wharton, Columbia, Lehigh, UMd, WPI, ...

2011-08-05T23:59:59.000Z

17

No Slide Title  

Science Conference Proceedings (OSTI)

... IAFSS, ASME, LANL, MIT, Princeton, Northwestern, UT Austin, Georgia Tech, Penn State, Drexel, Wharton, Columbia, Lehigh, UMd, WPI, ...

2011-11-17T23:59:59.000Z

18

Toyota Chairman vs. a Mathematician Chairman of the Board,  

E-Print Network (OSTI)

Toyota Chairman vs. a Mathematician Fujio Cho Chairman of the Board, Toyota Motor Corporation IPMU A Dialogue Between a Mathematician and Toyota's Chairman: Think, Think, and Think Again. What Lies and "Kaizen" C: After graduating from the university, I started working for Toyota. Six years later, I

Kobayashi, Toshiyuki

19

Iran Thomas Auditorium, 8600 Nano Carbon: From Solar Cells to...  

NLE Websites -- All DOE Office Websites (Extended Search)

November 3, 2011 4:00 pm Iran Thomas Auditorium, 8600 Nano Carbon: From Solar Cells to Atomic Drums Paul McEuen Goldwin Smith Professor of Physics, Cornell University and Kavli...

20

SLAC National Accelerator Laboratory - Seen Around SLAC: Fermi...  

NLE Websites -- All DOE Office Websites (Extended Search)

Seen Around SLAC: Fermi Telescope Model Flies Over Kavli Lobby By Lori Ann White October 26, 2011 A half-sized Fermi space telescope model, originally launched from SLAC's booth at...

Note: This page contains sample records for the topic "kavli ipmu wpi" 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

Advanced Photon Source | Combining Scanning Probe Microscopy...  

NLE Websites -- All DOE Office Websites (Extended Search)

30.2013 Alan Alda Center for Communicating Science workshop APS APS On September 26-28, 2013, Alan Alda, The Kavli Foundation, and the Alan Alda Center for Communicating Science...

22

Science Challenges & Opportunities for an Advanced X-ray Free...  

NLE Websites -- All DOE Office Websites (Extended Search)

Science Challenges & Opportunities for an Advanced X-ray Free-electron Laser Wednesday, October 2, 2013 - 3:00pm SLAC, Kavli 3rd Floor Conference Room Robert Schoenlein, Lawrence...

23

PRICM 8: Congress Organizers  

Science Conference Proceedings (OSTI)

... [dapelian@wpi.edu]; David Bourell, University of Texas [dbourell@mail.utexas. edu]; George T. Rusty Gray, Los Alamos National Laboratory [rusty@lanl.gov].

24

SOLAR WIND HELIUM ABUNDANCE AS A FUNCTION OF SPEED AND HELIOGRAPHIC LATITUDE: VARIATION THROUGH A SOLAR CYCLE  

E-Print Network (OSTI)

SOLAR WIND HELIUM ABUNDANCE AS A FUNCTION OF SPEED AND HELIOGRAPHIC LATITUDE: VARIATION THROUGH A SOLAR CYCLE Justin C. Kasper,1 Michael L. Stevens, and Alan J. Lazarus Kavli Institute for Astrophysics of the variation of the relative abundance of helium to hydrogen in the solar wind as a function of solar wind

Richardson, John

25

THEO MURPHY INTERNATIONAL SCIENTIFIC MEETING ON  

E-Print Network (OSTI)

.45 Tom Gardiner Measurements of the atmospheric water vapour continuum using a solar- pointing Fourier the Herschel space telescope Monday 13 June 2011 9.00 Welcome by Professor Sir Peter Knight, Principal of Kavli-based observations. 14.30 Discussion #12;14.45 Measurements of the atmospheric water vapour continuum using a solar

Rambaut, Andrew

26

arXiv:astro-ph/0407158v17Jul2004 Dark Energy Probes in Light of the CMB  

E-Print Network (OSTI)

arXiv:astro-ph/0407158v17Jul2004 Dark Energy Probes in Light of the CMB Wayne Hu Kavli Institute regime and provided two self-calibrated absolute standards for dark energy studies: the sound horizon redshift range or depth. The single most important complement to the CMB for measuring the dark energy

Hu, Wayne

27

dark matter dark energy inflation  

E-Print Network (OSTI)

theory dark matter dark energy inflation The National Science Foundation The Kavli Foundation NSF Site Review November 28-29, 2005 #12;dark matter dark energy inflation NSF Site Visit ­ November 28 Gravitation initial conditions beyond single-field slow roll #12;dark matter dark energy inflation NSF Site

Hu, Wayne

28

Task 10 - technology development integration. Semi-annual report, April 1--September 30, 1996  

Science Conference Proceedings (OSTI)

The Energy and Environmental Research Center (EERC), in conjunction with the Waste Policy Institute (WPI), will identify and integrate new technologies to meet site-specific environmental management (EM) requirements at contaminated sites appropriate to U.S. Department of Energy (DOE) interests. This paper briefly reports overall progress for three activities: technology management, project management, and technology integration. Work performed over the reporting period has focused on providing logistical and administrative support. In addition, six monthly WPI reports to the EERC are included as appendices. The WPI reports contained detailed information for progress in each activity.

Hendrikson, J.G.; Daly, D.J.

1997-05-01T23:59:59.000Z

29

A weighted profile intersection measure for profile-based authorship attribution  

Science Conference Proceedings (OSTI)

This paper introduces a new similarity measure called weighted profile intersection (WPI) for profile-based authorship attribution (PBAA). Authorship attribution (AA) is the task of determining which, from a set of candidate authors, wrote a given document. ...

Hugo Jair Escalante; Manuel Montes-y-Gmez; Thamar Solorio

2011-11-01T23:59:59.000Z

30

 

NLE Websites -- All DOE Office Websites (Extended Search)

Curve Modeling of Superluminous Supernovae Curve Modeling of Superluminous Supernovae Takashi Moriya (IPMU) Abstract: Recent SN surveys are discovering SNe with very high luminosity (brighter than -21 mag) and they are called superluminous SNe (SLSNe). At first, I will introduce SLSNe and their observational varieties. One idea to explain the huge luminosities is the collision of dense CSM and SN ejecta. If SN ejecta is surrounded by dense CSM, the kinetic energy of SN ejecta is efficiently converted to radiation energy, making them very bright. I will show our results of numerical modeling of such collisions and their light curves. From the light curve modeling, we obtain the properties of CSM and mass loss of the progenitors of SLSNe and some constraints on the progenitors. I also shortly introduce the transient survey planned for

31

Hull Wind: A Community Gets Green  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hull Wind Hull Wind A Community Gets Green Community Wind Power National Renewable Energy Laboratory September 18, 2012 Andrew Stern Executive Director Action for Clean Energy, Inc. www. ActionforCleanEnergy.org "A non-profit helping citizens and communities get green..." 1990 GM SunRayce WPI Starduster Windmill Point Hull, Massachusetts 1990 GM SunRayce WPI Starduster Windmill Point Hull, Massachusetts 1 kW solar array 5 kWh AgZn battery Top speed: 70 mph 80+ mpg equivalent 1650 miles 32 colleges MIT Solar House -2007 DOE Solar House Windmill Point Hull, Massachusetts

32

IEEE TRANSACTIONS ON COMPUTERS, VOL. X, NO. X, MONTH 2004 1 Energy Scalable Universal Hashing  

E-Print Network (OSTI)

Institute Rd., Worcester, MA 01609. E-mail: sunar@wpi.edu. might monitor plant growth, moisture and PH achieved substantial power savings of up to 59% and a speedup of up to 7.4 times over NH. Moreover, we show how the technique of multi-hashing and the Toeplitz approach can be combined to reduce the power

33

Chemical Zeolites Combinatorial . . .  

E-Print Network (OSTI)

Chemical Zeolites Combinatorial . . . Realization 2d Zeolites Finite Zeolites The Layer . . . Holes University (Brigitte Servatius -- WPI) #12;Chemical Zeolites Combinatorial . . . Realization 2d Zeolites. Chemical Zeolites · crystalline solid · units: Si + 4O Si O O O O · two covalent bonds per oxygen #12

Servatius, Brigitte

34

News Item  

NLE Websites -- All DOE Office Websites (Extended Search)

Neaton Neaton Jeff Neaton Director, Molecular Foundry Senior Faculty Scientist, Theory of Nanostructured Materials jbneaton@lbl.gov 510.486.4527 personal website Biography Jeffrey B. Neaton is the Director of the Molecular Foundry, where he also serves as a Senior Faculty Scientist in the Theory of Nanostructured Materials Facility. Dr. Neaton received a B.S. in Physics and Astrophysics from the University of Minnesota and a Ph.D. in Physics from Cornell University. He was a Departmental Postdoctoral Associate in Physics at Rutgers University prior to joining the Molecular Foundry, first as a postdoc and then as a staff member. In 2009 he was award the Presidential Early Career Award for Scientists and Engineers, and 2010 he was an National Academy of Sciences Kavli Fellow. Since 2012, he has been Division

35

Bauer-082312 - Argonne National Laboratories, Materials Sicence Division  

NLE Websites -- All DOE Office Websites (Extended Search)

Bauer-082312 Bauer-082312 MATERIALS SCIENCE COLLOQUIUM SPEAKER: Prof. Gerrit E. W. Bauer Institute of Materials Research Tohoku University, Japan Kavli Institute of NanoScience, TU Delft, The Netherlands TITLE: IEEE Magnetics Society Distinguished Lecture "Spin Caloritronics" DATE: Thursday, August 23, 2012 TIME: 11:00 a.m. PLACE: Building 212 / A-157 HOST: Axel Hoffmann Refreshments will be served at 10:45 a.m. ABSTRACT: The spin degree of freedom of the electron affects not only charge, but also heat and thermoelectric transport, leading to new effects in small structures that are studied in the field of spin caloritronics (from calor, the Latin word for heat). This lecture addresses the basic physics of spin caloritronics. Starting with an introduction into thermoelectrics and Onsager's reciprocity

36

Fermilab Today  

NLE Websites -- All DOE Office Websites (Extended Search)

9, 2004 9, 2004 Calendar Monday, March 29 2:30 p.m. Theoretical Astrophysics Seminar - Curia II Speaker: E. Baltz, Kavli Institute for Particle Astrophysics, Stanford Title: Diffuse Emission from Annihilations in Galactic Satellites 3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over 4:00 p.m. All Experimenters' Meeting - Curia II Tuesday, March 30 2:00 p.m. Computing Techniques Seminar - Curia II (NOTE LOCATION) Speaker: G. Nawrocki, The Globus Alliance Title: The Globus Toolkit and the OGSI - WSRF Evolution 3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over THERE WILL BE NO ACCELERATOR PHYSICS AND TECHNOLOGY SEMINAR TODAY Cafeteria Monday, March 29 BBQ Chicken with your choice of two sides $3.25 Penne Pasta with a meat sauce with Garlic Bread $3.50 Assorted gourmet sandwiches and panini $4.75

37

Pixel and Microstrip detectors for current and future synchrotron light  

NLE Websites -- All DOE Office Websites (Extended Search)

Pixel and Microstrip detectors for current and future synchrotron light Pixel and Microstrip detectors for current and future synchrotron light sources Friday, July 1, 2011 - 1:00pm SLAC, Kavli Auditorium Dr. Christian Brönnimann, CEO, DECTRIS Ltd., CH-5400 Baden, Switzerland The PILATUS pixel detectors, large area modular two-dimensional hybrid pixel array detectors, have revolutionized protein crystallography and biological small- and wide-angle scattering by combining noise-free counter properties with highest data acquisition rates. These features enable optimized data acquisition modes and new experimental techniques. The PILATUS 6M detector was developed at the Paul Scherrer Institut specifically for protein crystallography. DECTRIS has successfully commercialized the PILATUS technology. Currently eight 6M-systems are in

38

David J. Gross and the Strong Force  

NLE Websites -- All DOE Office Websites (Extended Search)

David J. Gross and the Strong Force David J. Gross and the Strong Force Resources with Additional Information The 2004 Nobel Prize in Physics was awarded to David Gross for "the discovery of asymptotic freedom in the theory of the strong interaction". 'Gross, who obtained his PhD in physics in 1966, currently is a professor of physics and director of the Kavli Institute for Theoretical Physics at UC Santa Barbara. ... David Gross Courtesy of UC Santa Barbara [When on the faculty at Princeton University,] he and then-graduate student Frank Wilczek came up with a way to describe the "strong force" that governs interactions between protons and neutrons in the nucleus of the atom. He and Wilczek published their proposal simultaneously with H. David Politzer, a graduate student [at Harvard University] who independently came up with the same idea. ...

39

Richard Schaller  

NLE Websites -- All DOE Office Websites (Extended Search)

My current research focuses on optical experimental investigations of the electronic structure of My current research focuses on optical experimental investigations of the electronic structure of quantum-confined semiconductor materials, excitonic energy relaxation and thermal dissipation, generation and fate of multiple excited carriers, and charge manipulation. The goal is to understand the physical laws that determine the limits of material performance for energy- relevant applications as well as to permit predictive capabilities regarding the potential performance of novel material compositions. Honors: Selected as National Academy of Sciences Kavli Fellow, 2012 Los Alamos Award Program (LAAP), 2008 Distinguished Postdoctoral Performance Award, 2006 Los Alamos Postdoctoral Publication Prize in Experimental Sciences, 2005 Frederick Reines Distinguished Postdoctoral Fellow, 2004-2006

40

Chang-032813 - Argonne National Laboratories, Materials Sicence Division  

NLE Websites -- All DOE Office Websites (Extended Search)

Chang-032813 Chang-032813 MATERIALS SCIENCE COLLOQUIUM SPEAKER: Clarence Chang Kavli Institute for Cosmological Physics TITLE: Superconducting technology and the South Pole Telescope: connecting Material Sciences with Cosmology DATE: Thursday, March 28, 2013 TIME: 11:00 a.m. PLACE: Building 212 / A-157 HOST: Ray Osborn Refreshments will be served at 10:45 a.m. ABSTRACT: Advances in superconducting Transition Edge Sensors (TES) are enabling new measurements relevant for understanding the origins, composition, and evolution of the Universe. I will discuss how TES technology is opening new windows into cosmology through ground-breaking measurements of the Cosmic Microwave Background (CMB) radiation with the South Pole Telescope (SPT), a 10-m mm-wave observatory at the geographic

Note: This page contains sample records for the topic "kavli ipmu wpi" 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

Scientific Challenges for Understanding the Quantum Universe  

SciTech Connect

A workshop titled "Scientific Challenges for Understanding the Quantum Universe" was held December 9-11, 2008, at the Kavli Institute for Particle Astrophysics and Cosmology at the Stanford Linear Accelerator Center-National Accelerator Laboratory. The primary purpose of the meeting was to examine how computing at the extreme scale can contribute to meeting forefront scientific challenges in particle physics, particle astrophysics and cosmology. The workshop was organized around five research areas with associated panels. Three of these, "High Energy Theoretical Physics," "Accelerator Simulation," and "Experimental Particle Physics," addressed research of the Office of High Energy Physics Energy and Intensity Frontiers, while the"Cosmology and Astrophysics Simulation" and "Astrophysics Data Handling, Archiving, and Mining" panels were associated with the Cosmic Frontier.

Khaleel, Mohammad A.

2009-10-16T23:59:59.000Z

42

Using Wave-Packet Interferometry to Monitor the External Vibrational Control of Electronic Excitation Transfer  

E-Print Network (OSTI)

We investigate the control of electronic energy transfer in molecular dimers through the preparation of specific vibrational coherences prior to electronic excitation, and its observation by nonlinear wave-packet interferometry. Laser-driven coherent nuclear motion can affect the instantaneous resonance between site-excited electronic states and thereby influence short-time electronic excitation transfer (EET). We first illustrate this control mechanism with calculations on a dimer whose constituent monomers undergo harmonic vibrations. We then consider the use of nonlinear wave-packet interferometry (nl-WPI) experiments to monitor the nuclear dynamics accompanying EET in general dimer complexes following impulsive vibrational excitation by a sub-resonant control pulse (or control pulse sequence). In measurements of this kind, two pairs of polarized phase-related femtosecond pulses following the control pulse generate superpositions of coherent nuclear wave packets in optically accessible electronic states. Interference contributions to the time- and frequency-integrated fluorescence signal due to overlaps among the superposed wave packets provide amplitude-level information on the nuclear and electronic dynamics. We derive the basic expression for a control-pulse-dependent nl-WPI signal. The electronic transition moments of the constituent monomers are assumed to have a fixed relative orientation, while the overall orientation of the complex is distributed isotropically. We include the limiting case of coincident arrival by pulses within each phase-related pair in which control-influenced nl-WPI reduces to a fluorescence-detected pump-probe difference experiment. Numerical calculations of pump-probe signals based on these theoretical expressions are presented in the following paper.

Jason D. Biggs; Jeffrey A. Cina

2009-10-12T23:59:59.000Z

43

TECHNICAL INTEGRATION ENVIRONMENTAL MANAGEMENT FOCUS AREAS  

SciTech Connect

This contract involved a team of companies led by WPI (formerly the Waste Policy Institute). In addition to WPI, the team included four subcontractors--TRW (formerly BDM Federal), SAIC, Energetics, and the University of North Dakota Energy and Environmental Research Center (EERC). The team of companies functioned as a ''seamless team'' assembled to support the Environmental Management Program Focus Areas. Staff resources were applied in the following offices: Richland, Washington, Idaho Falls, Idaho, Morgantown, West Virginia, Grand Forks, North Dakota, Aiken, South Carolina, Gaithersburg, Maryland, and Blacksburg, Virginia. These locations represented a mixture of site support offices at the field focus area locations and central staff to support across the focus areas. The management of this dispersed resource base relied on electronic communication links to allow the team to function as a ''virtual office'' to address tasks with the best qualified staff matched to the task assignments. A variety of tasks were assigned and successfully completed throughout the life of the contract that involved program planning and analysis, program execution, program information management and communication and data transmission.

Carey R. Butler

2001-10-01T23:59:59.000Z

44

The Absolute Magnitude of RRc Variables From Statistical Parallax  

E-Print Network (OSTI)

We present the first definitive measurement of the absolute magnitude of RR Lyrae c-type variable stars (RRc) determined purely from statistical parallax. We use a sample of 247 RRc selected from the All Sky Automated Survey (ASAS) for which high-quality light curves, photometry and proper motions are available. We obtain high-resolution echelle spectra for these objects to determine radial velocities and abundances as part of the Carnegie RR Lyrae Survey (CARRS). We find that M_(V,RRc) = 0.52 +/- 0.11 at a mean metallicity of [Fe/H] = -1.59. This is to be compared with previous estimates for RRab stars (M_(V,RRab) = 0.75 +/- 0.13 and the only direct measurement of an RRc absolute magnitude (RZ Cephei, M_(V, RRc) = 0.27 +/- 0.17). We find the bulk velocity of the halo to be (W_pi, W_theta, W_z) = (10.9,34.9,7.2) km/s in the radial, rotational and vertical directions with dispersions (sigma_(W_pi), sigma_(W_theta), sigma_(W_z)) = (154.7, 103.6, 93.8) km/s. For the disk, we find (W_pi, W_theta, W_z) = (8.5, 213...

Kollmeier, Juna A; Burns, Christopher R; Gould, Andrew; Thompson, Ian B; Preston, George W; Sneden, Christopher; Crane, Jeffrey D; Dong, Subo; Madore, Barry F; Morrell, Nidia; Prieto, Jose L; Shectman, Stephen; Simon, Joshua D; Villanueva, Edward

2012-01-01T23:59:59.000Z

45

Calculations of Nonlinear Wave-Packet Interferometry Signals in the Pump-Probe Limit as Tests for Vibrational Control over Electronic Excitation Transfer  

E-Print Network (OSTI)

The preceding paper describes a strategy for externally influencing the course of short-time electronic excitation transfer (EET) in molecular dimers and observing the process by nonlinear wave-packet interferometry (nl-WPI). Within a sample of isotropically oriented dimers having a specified internal geometry, a vibrational mode internal to the acceptor chromophore can be preferentially driven by electronically nonresonant impulsive stimulated Raman (or resonant infrared) excitation with a short polarized control pulse. A subsequent electronically resonant polarized pump then preferentially excites the donor, and EET ensues. Here we test both the control strategy and its spectroscopic investigation-with some sacrifice of amplitude-level detail-by calculating the pump-probe difference signal. That signal is the limiting case of the control-influenced nl-WPI signal in which the two pulses in the pump pulse-pair coincide, as do the two pulses in the probe pulse-pair. We present calculated pump-probe difference signals for (1) a model excitation-transfer complex in which two equal-energy monomers each support one moderately Franck-Condon active intramolecular vibration; (2) a simplified model of the covalent dimer dithia-anthracenophane, representing its EET dynamics following selective impulsive excitation of the weakly Franck-Condon active anthracene vibration at 385 cm-1; and (3) a model complex featuring moderate electronic-vibrational coupling in which the site energy of the acceptor chromophore is lower than that of the donor.

Jason D. Biggs; Jeffrey A. Cina

2009-10-12T23:59:59.000Z

46

TECHNICAL INTEGRATION ENVIRONMENTAL MANAGEMENT FOCUS AREAS  

SciTech Connect

This contract involved a team of companies led by WPI (formerly the Waste Policy Institute). In addition to WPI, the team included four subcontractors--TRW (formerly BDM Federal), SAIC, Energetics, and the University of North Dakota Energy and Environmental Research Center (EERC). The team of companies functioned as a ''seamless team'' assembled to support the Environmental Management Program Focus Areas. Staff resources were applied in the following offices: Richland, Washington, Idaho Falls, Idaho, Morgantown, West Virginia, Grand Forks, North Dakota, Aiken, South Carolina, Gaithersburg, Maryland, and Blacksburg, Virginia. These locations represented a mixture of site support offices at the field focus area locations and central staff to support across the focus areas. The management of this dispersed resource base relied on electronic communication links to allow the team to function as a ''virtual office'' to address tasks with the best qualified staff matched to the task assignments. A variety of tasks were assigned and successfully completed throughout the life of the contract that involved program planning and analysis, program execution, program information management and communication and data transmission.

Carey R. Butler

2001-10-01T23:59:59.000Z

47

Task 10 - Technology Development Integration. Semiannual report, November 1, 1996--March 31, 1997  

Science Conference Proceedings (OSTI)

The Energy and Environmental Research Center (EERC) in conjunction with the Waste Policy Institute (WPI) will identify and integrate new technologies to meet site-specific environmental management (EM) requirements at contaminated sites appropriate to U.S. Department of Energy (DOE) interests. EM technologies offered by developers will be evaluated to determine their complementary contribution to new cleanup systems focused on particular characterization and remediation problems at specific EM sites. The technology clusters identified will provide EM cleanup capabilities that are significantly faster, better, safer, and cheaper than systems that are currently available. Work will be performed under the DOE-EERC EM Cooperative Agreement (EMCA), which includes provisions to develop, demonstrate, and commercialize technologies that address environmental management needs of contaminated sites together with management activities which accelerate transfer of technologies. The effort began July 1, 1995.

Erickson, Thomas A.; Daly, Daniel J.

1997-12-31T23:59:59.000Z

48

Making Galaxies: One Star at a Time  

DOE Green Energy (OSTI)

In the age of precision cosmology the fundamental parameters of our world model are being measured to unprecedented accuracy. In particular, measurements of the cosmic microwave background radiation detail the state of the universe only 400,000 years after the big bang. Unfortunately, we have no direct observational evidence about the following few hundred million years, the so called dark ages. However, we do know from the composition of the highest redshift galaxies that it is there where the earliest and first galaxies are being formed. From a physics point of view these earliest times are much easier to understand and model because the chemical composition of the early gas is simpler and the first galaxies are much smaller than the ones found nearby. The absence of strong magnetic fields, cosmic rays, dust grains and UV radiation fields clearly also helps. The first generation of structure formation is as such a problem extremely well suited for direct ab initio calculations using supercomputers. In this colloquium I will discuss the rich physics of the formation of the first objects as computed via ab initio Eulerian cosmological adaptive mesh refinement calculations. We find the first generation of stars to be massive and to form in isolation with mass between 30 and 300 times the mass of the sun. Remarkably the relevant mass scales can all be understood analytically from the microscopic properties of atomic and molecular hydrogen. The UV radiation from these stars photo-evaporates their parent clouds within their lifetimes contributing significantly to cosmological reionization. Their supernovae distribute the first heavy elements over thousands of light years and enrich the intergalactic medium. As we are beginning to illuminate these earliest phases of galaxy formation many new questions arise and become addressable with our novel numerical techniques. How and where are the earliest magnetic fields made? How do the first super-massive black holes form? When and how can the first planets form in the universe? Algorithmic breakthroughs and large supercomputers enable these studies. Hence I will close with discussing how the expanding computing infrastructure at SLAC and scientific visualization at the Schwob Computing and Information Center at the Fred Kavli building allow us to find answers to the fundamental questions about the beginning of structure in the universe.

Abel, Tom

2006-09-18T23:59:59.000Z

49

Energy Efficient Microwave Hybrid Processing of Lime for Cement, Steel, and Glass Industries  

SciTech Connect

In this study, the microwave materials interactions were studied through dielectric property measurements, process modeling, and lab scale microwave hybrid calcination tests. Characterization and analysis were performed to evaluate material reactions and energy usage. Processing parameters for laboratory scale and larger scale calcining experiments were developed for MAT limestone calcination. Early stage equipment design concepts were developed, with a focus on microwave post heating treatment. The retrofitting of existing rotary calcine equipment in the lime industry was assessed and found to be feasible. Ceralink sought to address some of the major barriers to the uptake of MAT identified as the need for (1) team approach with end users, technology partners, and equipment manufacturers, (2) modeling that incorporates kiln materials and variations to the design of industrial microwave equipment. This project has furthered the commercialization effort of MAT by working closely with an industrial lime manufacturer to educate them regarding MAT, identifying equipment manufacturer to supply microwave equipment, and developing a sophisticated MAT modeling with WPI, the university partner. MAT was shown to enhance calcining through lower energy consumption and faster reaction rates compared to conventional processing. Laboratory testing concluded that a 23% reduction in energy was possible for calcining small batches (5kg). Scale-up testing indicated that the energy savings increased as a function of load size and 36% energy savings was demonstrated (22 kg). A sophisticated model was developed which combines simultaneous microwave and conventional heating. Continued development of this modeling software could be used for larger scale calcining simulations, which would be a beneficial low-cost tool for exploring equipment design prior to actual building. Based on these findings, estimates for production scale MAT calcining benefits were calculated, assuming uptake of MAT in the US lime industry. This estimate showed that 7.3 TBTU/year could be saved, with reduction of 270 MMlbs of CO2 emissions, and $29 MM/year in economic savings. Taking into account estimates for MAT implementation in the US cement industry, an additional 39 TBTU/year, 3 Blbs of CO2 and $155 MM/year could be saved. One of the main remaining barriers to commercialization of MAT for the lime and cement industries is the sheer size of production. Through this project, it was realized that a production size MAT rotary calciner was not feasible, and a different approach was adapted. The concept of a microwave post heat section located in the upper portion of the cooler was devised and appears to be a more realistic approach for MAT implementation. Commercialization of this technology will require (1) continued pilot scale calcining demonstrations, (2) involvement of lime kiln companies, and (3) involvement of an industrial microwave equipment provider. An initial design concept for a MAT post-heat treatment section was conceived as a retrofit into the cooler sections of existing lime rotary calciners with a 1.4 year payback. Retrofitting will help spur implementation of this technology, as the capital investment will be minimal for enhancing the efficiency of current rotary lime kilns. Retrofits would likely be attractive to lime manufacturers, as the purchase of a new lime kiln is on the order of a $30 million dollar investment, where as a MAT retrofit is estimated on the order of $1 million. The path for commercialization lies in partnering with existing lime kiln companies, who will be able to implement the microwave post heat sections in existing and new build kilns. A microwave equipment provider has been identified, who would make up part of the continued development and commercialization team.

Fall, Morgana L; Yakovlev, Vadim; Sahi, Catherine; Baranova, Inessa; Bowers, Johnney G; Esquenazi , Gibran L

2012-02-10T23:59:59.000Z