National Library of Energy BETA

Sample records for beam dynamics workshop

  1. Report of the ICFA Beam Dynamics Workshop 'Accelerators for a Higgs

    Office of Scientific and Technical Information (OSTI)

    Factory: Linear Vs. Circular' (HF2012) (Conference) | SciTech Connect Conference: Report of the ICFA Beam Dynamics Workshop 'Accelerators for a Higgs Factory: Linear Vs. Circular' (HF2012) Citation Details In-Document Search Title: Report of the ICFA Beam Dynamics Workshop 'Accelerators for a Higgs Factory: Linear Vs. Circular' (HF2012) Authors: Blondel, Alain ; Chao, Alex ; /Geneva U., astr /SLAC ; Chou, Weiren ; /Fermilab ; Gao, Jie ; /Beijing, Inst. High Energy Phys. ; Schulte, Daniel ;

  2. Beam Instrumentation Workshop

    SciTech Connect (OSTI)

    Shafer, R.E. )

    1994-01-01

    The fifth annual Beam Instrumentation Workshop was hosted by Los Alamos National Laboratory in Santa Fe, New Mexico. These proceedings represent the papers presented at the Workshop. A variety of topics were covered including beam emittance diagnostics, fluorescent screens, control systems for many accelerators and photon sources. Beam monitoring was discussed in great detail. There were thirty seven papers presented at the Workshop and all have been abstracted for the Energy and Science Technology database. (AIP)

  3. Summary of the 2014 Beam-Halo Monitoring Workshop (Conference...

    Office of Scientific and Technical Information (OSTI)

    Conference: Summary of the 2014 Beam-Halo Monitoring Workshop Citation Details In-Document Search Title: Summary of the 2014 Beam-Halo Monitoring Workshop Authors: Fisher, Alan S ;...

  4. Beam Dynamics for ARIA

    SciTech Connect (OSTI)

    Ekdahl, Carl August Jr.

    2014-10-14

    Beam dynamics issues are assessed for a new linear induction electron accelerator being designed for flash radiography of large explosively driven hydrodynamic experiments. Special attention is paid to equilibrium beam transport, possible emittance growth, and beam stability. It is concluded that a radiographic quality beam will be produced possible if engineering standards and construction details are equivalent to those on the present radiography accelerators at Los Alamos.

  5. Dynamic defense workshop : from research to practice.

    SciTech Connect (OSTI)

    Crosby, Sean Michael; Doak, Justin E.; Haas, Jason J.; Helinski, Ryan; Lamb, Christopher C.

    2013-02-01

    On September 5th and 6th, 2012, the Dynamic Defense Workshop: From Research to Practice brought together researchers from academia, industry, and Sandia with the goals of increasing collaboration between Sandia National Laboratories and external organizations, de ning and un- derstanding dynamic, or moving target, defense concepts and directions, and gaining a greater understanding of the state of the art for dynamic defense. Through the workshop, we broadened and re ned our de nition and understanding, identi ed new approaches to inherent challenges, and de ned principles of dynamic defense. Half of the workshop was devoted to presentations of current state-of-the-art work. Presentation topics included areas such as the failure of current defenses, threats, techniques, goals of dynamic defense, theory, foundations of dynamic defense, future directions and open research questions related to dynamic defense. The remainder of the workshop was discussion, which was broken down into sessions on de ning challenges, applications to host or mobile environments, applications to enterprise network environments, exploring research and operational taxonomies, and determining how to apply scienti c rigor to and investigating the eld of dynamic defense.

  6. Summary of the LARP Mini-Workshop on Beam-Beam Compensation 2007

    SciTech Connect (OSTI)

    Fischer, Wolfram; Bruning, Oliver S.; Koutchouk, J.P.; Zimmermann, F.; Sen, T.; Shiltsev, V.; Ohmi, K.; Furman, M.; Cai, Y.; Chao, A.; /SLAC

    2011-11-07

    The LARP Mini-Workshop on Beam-Beam Compensation 2007 was held at SLAC, 2-4 July 2007. It was attended by 33 participants from 10 institutions in Asia, Europe, and America. 26 presentations were given, while more than one third of the time was allocated to discussions. The workshop web site is Ref. [1]. The workshop's main focus was on long-range and head-on beam-beam compensation, with a view towards application in the LHC. Other topics included the beam-beam performance of previous, existing and future circular colliders; beam-beam simulations; new operating modes, theory, and unexplained phenomena. This summary is also published as Ref. [2].

  7. ICFA Beam Dynamics Newsletter

    SciTech Connect (OSTI)

    Ben-Zvi I.; Kuczewski A.; Altinbas, Z.; Beavis, D.; Belomestnykh,; Dai, J. et al

    2012-07-01

    The Collider-Accelerator Department at Brookhaven National Laboratory is building a high-brightness 500 mA capable Energy Recovery Linac (ERL) as one of its main R&D thrusts towards eRHIC, the polarized electron - hadron collider as an upgrade of the operating RHIC facility. The ERL is in final assembly stages, with injection commisioning starting in October 2012. The objective of this ERL is to serve as a platform for R&D into high current ERL, in particular issues of halo generation and control, Higher-Order Mode (HOM) issues, coherent emissions for the beam and high-brightness, high-power beam generation and preservation. The R&D ERL features a superconducting laser-photocathode RF gun with a high quantum efficiency photoccathode served with a load-lock cathode delivery system, a highly damped 5-cell accelerating cavity, a highly flexible single-pass loop and a comprehensive system of beam instrumentation. In this ICFA Beam Dynamics Newsletter article we will describe the ERL in a degree of detail that is not usually found in regular publications. We will discuss the various systems of the ERL, following the electrons from the photocathode to the beam dump, cover the control system, machine protection etc and summarize with the status of the ERL systems.

  8. Summary of the 2014 Beam-Halo Monitoring Workshop (Conference...

    Office of Scientific and Technical Information (OSTI)

    Resource Relation: Conference: InvitedInternational Beam Instrumentation Conference 2015, Melbourne, Australia, 9142015-9172015 Research Org: SLAC National Accelerator ...

  9. Workshops

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

    ISTI organizes, sponsors, or co-sponsors LANL-led workshops in IS&T areas relevant to the ... ISTI organizes, sponsors, or co-sponsors LANL-led workshops in IS&T areas relevant to the ...

  10. Workshops

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

    Workshops Workshops ISTI organizes, sponsors, or co-sponsors LANL-led workshops in IS&T areas relevant to the LANL mission. Contact Institute Director Stephan Eidenbenz (505) 667-3742 Email Professional Staff Assistant Nickole Aguilar Garcia (505) 665-3048 Email ISTI organizes, sponsors, or co-sponsors LANL-led workshops in IS&T areas relevant to the LANL mission. The goals of ISTI workshops are to bring researchers together often from various fields to develop novel technical

  11. Online optimization of storage ring nonlinear beam dynamics ...

    Office of Scientific and Technical Information (OSTI)

    Online optimization of storage ring nonlinear beam dynamics Citation Details In-Document Search Title: Online optimization of storage ring nonlinear beam dynamics Authors: Huang,...

  12. Online optimization of storage ring nonlinear beam dynamics ...

    Office of Scientific and Technical Information (OSTI)

    Online optimization of storage ring nonlinear beam dynamics Citation Details In-Document Search Title: Online optimization of storage ring nonlinear beam dynamics You are...

  13. Proceedings of the workshop on the science of intense radioactive ion beams

    SciTech Connect (OSTI)

    McClelland, J.B.; Vieira, D.J.

    1990-10-01

    This report contains the proceedings of a 2-1/2 day workshop on the Science of Intense Radioactive Ion Beams which was held at the Los Alamos National Laboratory on April 10--12, 1990. The workshop was attended by 105 people, representing 30 institutions from 10 countries. The thrust of the workshop was to develop the scientific opportunities which become possible with a new generation intense Radioactive Ion Beam (RIB) facility, currently being discussed within North America. The workshop was organized around five primary topics: (1) reaction physics; (2) nuclei far from stability/nuclear structure; (3) nuclear astrophysics; (4) atomic physics, material science, and applied research; and (5) facilities. Overview talks were presented on each of these topics, followed by 1-1/2 days of intense parallel working group sessions. The final half day of the workshop was devoted to the presentation and discussion of the working group summary reports, closing remarks and a discussion of future plans for this effort.

  14. Combustion Dynamics Facility: April 1990 workshop working group reports

    SciTech Connect (OSTI)

    Kung, A.H.; Lee, Y.T.

    1990-04-01

    This document summarizes results from a workshop held April 5--7, 1990, on the proposed Combustion Dynamics Facility (CDF). The workshop was hosted by the Lawrence Berkeley Laboratory (LBL) and Sandia National Laboratories (SNL) to provide an opportunity for potential users to learn about the proposed experimental and computational facilities, to discuss the science that could be conducted with such facilities, and to offer suggestions as to how the specifications and design of the proposed facilities might be further refined to address the most visionary scientific opportunities. Some 130 chemical physicists, combustion chemists, and specialists in UV synchrotron radiation sources and free-electron lasers (more than half of whom were from institutions other than LBL and SNL) attended the five plenary sessions and participated in one or more of the nine parallel working group sessions. Seven of these sessions were devoted to broadening and strengthening the scope of CDF scientific opportunities and to detail the experimental facilities required to realize these opportunities. Two technical working group sessions addressed the design and proposed performance of two of the major CDF experimental facilities. These working groups and their chairpersons are listed below. A full listing of the attendees of the workshop is given in Appendix A. 1 tab.

  15. Quantum fluctuations in beam dynamics.

    SciTech Connect (OSTI)

    Kim, K.-J.

    1998-06-04

    Quantum effects could become important for particle and photon beams used in high-luminosity and high brightness applications in the current and next generation accelerators and radiation sources. This paper is a review of some of these effects.

  16. Interactive Beam-Dynamics Program

    Energy Science and Technology Software Center (OSTI)

    2001-01-08

    TRACE3D is an interactive program that calculates the envelopes of a bunched beam, including linear space-charge forces, through a user-defined system. The transport system may consist of the following elements: drift, thin lens, quadrupole, permanent magnet quadrupole, solenoid, doublet, triplet, bending magnet, edge angle (for bend), RF gap, radio-frequency-quadrupole cell, RF cavity, coupled-cavity tank, user-desired element, coordinate rotation, and identical element. The beam is represented by a 6X6 matrix defining a hyper-ellipsoid in six-dimensional phasemore » space. The projection of this hyperellipsoid on any two-dimensional plane is an ellipse that defines the boundary of the beam in that plane.« less

  17. Workshop

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

    Workshops Network R&D Software-Defined Networking (SDN) Experimental Network Testbeds Performance (perfSONAR) Software & Tools Development Data for Researchers Partnerships Publications Workshops Contact Us Technical Assistance: 1 800-33-ESnet (Inside US) 1 800-333-7638 (Inside US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net Workshops SC15 logo November 2015: Software Defined Networking (SDN) for

  18. Injected Beam Dynamics in SPEAR3

    SciTech Connect (OSTI)

    Corbett, Jeff; Fisher, Alan; Huang, Xiaobiao; Safranek, James; Westerman, Stuart; Cheng, Weixing; Mok, Walter; /Unlisted

    2012-06-21

    For the top-off operation it is important to understand the time evolution of charge injected into the storage ring. The large-amplitude horizontal oscillation quickly filaments and decoheres, and in some cases exhibits non-linear x-y coupling before damping to the stored orbit. Similarly, in the longitudinal dimension, any mismatch in beam arrival time, beam energy or phase-space results in damped, non-linear synchrotron oscillations. In this paper we report on measurements of injection beam dynamics in the transverse and longitudinal planes using turn-by-turn BPMs, a fast-gated, image-intensified CCD camera and a Hamamatsu C5680 streak camera.

  19. Beam Dynamics Studies for a Laser Acceleration Experiment (Conference...

    Office of Scientific and Technical Information (OSTI)

    Citation Details In-Document Search Title: Beam Dynamics Studies for a Laser Acceleration Experiment The NLC Test Accelerator (NLCTA) at SLAC was built to address various beam ...

  20. Notes on beam dynamics in linear accelerators

    SciTech Connect (OSTI)

    Gluckstern, R.L.

    1980-09-01

    A collection of notes, on various aspects of beam dynamics in linear accelerators, which were produced by the author during five years (1975 to 1980) of consultation for the LASL Accelerator Technology (AT) Division and Medium-Energy Physics (MP) Division is presented.

  1. TRACKING CODE DEVELOPMENT FOR BEAM DYNAMICS OPTIMIZATION

    SciTech Connect (OSTI)

    Yang, L.

    2011-03-28

    Dynamic aperture (DA) optimization with direct particle tracking is a straight forward approach when the computing power is permitted. It can have various realistic errors included and is more close than theoretical estimations. In this approach, a fast and parallel tracking code could be very helpful. In this presentation, we describe an implementation of storage ring particle tracking code TESLA for beam dynamics optimization. It supports MPI based parallel computing and is robust as DA calculation engine. This code has been used in the NSLS-II dynamics optimizations and obtained promising performance.

  2. Transverse beam dynamics in plasma-based linacs (Conference)...

    Office of Scientific and Technical Information (OSTI)

    Transverse beam dynamics in plasma-based linacs Citation Details In-Document Search Title: Transverse beam dynamics in plasma-based linacs You are accessing a document from the ...

  3. workshop

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

    workshop - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy

  4. Beam Dynamics Challenges for the ILC

    SciTech Connect (OSTI)

    Kubo, Kiyoshi; Seryi, Andrei; Walker, Nicholas; Wolski, Andy; /Cockcroft Inst. Accel. Sci. Tech.

    2008-02-13

    The International Linear Collider (ILC) is a proposal for 500 GeV center-of-mass electron-positron collider, with a possible upgrade to {approx}1 TeV center-of-mass. At the heart of the ILC are the two {approx}12 km 1.3 GHz superconducting RF (SCRF) linacs which will accelerate the electron and positron beams to an initial maximum energy of 250 GeV each. The Global Design Effort (GDE)--responsible for the world-wide coordination of this uniquely international project--published the ILC Reference Design Report in August of 2007 [1]. The ILC outlined in the RDR design stands on a legacy of over fifteen-years of R&D. The GDE is currently beginning the next step in this ambitious project, namely an Engineering Design phase, which will culminate with the publication of an Engineering Design Report (EDR) in mid-2010. Throughout the history of linear collider development, beam dynamics has played an essential role. In particular, the need for complex computer simulations to predict the performance of the machine has always been crucial, not least because the parameters of the ILC represent in general a large extrapolation from where current machines operate today; many of the critical beam-dynamics features planned for the ILC can ultimately only be truly tested once the ILC has been constructed. It is for this reason that beam dynamics activities will continue to be crucial during the Engineering Design phase, as the available computer power and software techniques allow ever-more complex and realistic models of the machine to be developed. Complementary to the computer simulation efforts are the need for well-designed experiments at beam-test facilities, which--while not necessarily producing a direct demonstration of the ILC-like parameters for the reasons mentioned above--can provide important input and benchmarking for the computer models.

  5. Beam stability & nonlinear dynamics. Formal report

    SciTech Connect (OSTI)

    Parsa, Z.

    1996-12-31

    his Report includes copies of transparencies and notes from the presentations made at the Symposium on Beam Stability and Nonlinear Dynamics, December 3-5, 1996 at the Institute for Theoretical Physics, University of California, Santa Barbara California, that was made available by the authors. Editing, reduction and changes to the authors contributions were made only to fulfill the printing and publication requirements. We would like to take this opportunity and thank the speakers for their informative presentations and for providing copies of their transparencies and notes for inclusion in this Report.

  6. Report of the ICFA Beam Dynamics Workshop 'Accelerators for a...

    Office of Scientific and Technical Information (OSTI)

    Authors: Blondel, Alain ; Chao, Alex ; Geneva U., astr SLAC ; Chou, Weiren ; Fermilab ; Gao, Jie ; Beijing, Inst. High Energy Phys. ; Schulte, Daniel ; CERN ; Yokoya, Kaoru ; ...

  7. Report of the ICFA Beam Dynamics Workshop 'Accelerators for a...

    Office of Scientific and Technical Information (OSTI)

    Publication Date: 2013-02-01 OSTI Identifier: 1127908 Report Number(s): SLAC-PUB-15370 ... MLA APA Chicago Bibtex Export Metadata Endnote Excel CSV XML Save to My Library Send to ...

  8. Report of the ICFA Beam Dynamics Workshop 'Accelerators for a...

    Office of Scientific and Technical Information (OSTI)

    Close Cite: Bibtex Format Close 0 pages in this document matching the terms "" Search For Terms: Enter terms in the toolbar above to search the full text of this document for ...

  9. X-Band Photoinjector Beam Dynamics

    SciTech Connect (OSTI)

    Zhou, Feng; Adolphsen, Chris; Ding, Yuantao; Li, Zenghai; Vlieks, Arnold; /SLAC

    2011-12-13

    SLAC is studying the feasibility of using an X-band RF photocathode gun to produce low emittance bunches for applications such as a mono-energetic MeV {gamma} ray source (in collaboration with LLNL) and a photoinjector for a compact FEL. Beam dynamics studies are being done for a configuration consisting of a 5.5-cell X-band gun followed by several 53-cell high-gradient X-band accelerator structures. A fully 3D program, ImpactT, is used to track particles taking into account space charge forces, short-range longitudinal and transverse wakefields, and the 3D rf fields in the structures, including the quadrupole component of the couplers. The effect of misalignments of the various elements, including the drive-laser, gun, solenoid and accelerator structures, are evaluated. This paper presents these results and estimates of the expected bunch emittance vs cathode gradient, and the effects of mixing between the fundamental and off-frequency longitudinal modes. An X-band gun at SLAC has been shown to operate reliably with a 200 MV/m acceleration gradient at the cathode, which is nearly twice the 115 MV/m acceleration gradient in the LCLS gun. The higher gradient should roughly balance the space charge related transverse emittance growth for the same bunch charge but provide a 3-4 times shorter bunch length. The shorter length would make the subsequent bunch compression easier and allow for a more effective use of emittance exchange. Such a gun can also be used with an X-band linac to produce a compact FEL or g ray source that would require rf sources of only one frequency for beam generation and acceleration. The feasibility of using an X-band rf photocathode gun and accelerator structures to generate high quality electron beams for compact FELs and g ray sources is being studied at SLAC. Results from the X-band photoinjector beam dynamics studies are reported in this paper.

  10. Molecular beam studies of reaction dynamics

    SciTech Connect (OSTI)

    Lee, Y.T.

    1993-12-01

    The major thrust of this research project is to elucidate detailed dynamics of simple elementary reactions that are theoretically important and to unravel the mechanism of complex chemical reactions or photochemical processes that play important roles in many macroscopic processes. Molecular beams of reactants are used to study individual reactive encounters between molecules or to monitor photodissociation events in a collision-free environment. Most of the information is derived from measurement of the product fragment energy, angular, and state distributions. Recent activities are centered on the mechanisms of elementary chemical reactions involving oxygen atoms with unsaturated hydrocarbons, the dynamics of endothermic substitution reactions, the dependence of the chemical reactivity of electronically excited atoms on the alignment of excited orbitals, the primary photochemical processes of polyatomic molecules, intramolecular energy transfer of chemically activated and locally excited molecules, the energetics of free radicals that are important to combustion processes, the infrared-absorption spectra of carbonium ions and hydrated hydronium ions, and bond-selective photodissociation through electric excitation.

  11. Simulation study of dynamic aperture with head-on beam-beam compensation in the RHIC

    SciTech Connect (OSTI)

    Luo, Y.; Fischer, W.

    2010-08-01

    In this note we summarize the calculated 10{sup 6} turn dynamic apertures with the proposed head-on beam-beam compensation in the Relativistic Heavy Ion Collider (RHIC). To compensate the head-on beam-beam effect in the RHIC 250 GeV polarized proton run, we are planning to introduce a DC electron beam with the same transverse profile as the proton beam to collide with the proton beam. Such a device to provide the electron beam is called an electron lens (e-lens). In this note we first present the optics and beam parameters and the tracking setup. Then we compare the calculated dynamic apertures without and with head-on beam-beam compensation. The effects of adjusted phase advances between IP8 and the center of e-lens and second order chromaticity correction are checked. In the end we will scan the proton and electron beam parameters with head-on beam-beam compensation.

  12. Proceedings of the workshop on the production and use of intense radioactive beams at the Isospin Laboratory

    SciTech Connect (OSTI)

    Garrett, J.D.

    1992-12-31

    These proceedings report the deliberations of a 3 1/2 day workshop on the Production and Use of Intense Radioactive Ion Beams at the Isospin Laboratory, which was held at the Joint Institute for Heavy Ion Research in Oak Ridge, Tennessee, October 1992. The purpose of this workshop was not to duplicate the programs of other recent radioactive ion beam workshops or international conferences that have focused on the scientific concepts which radioactive beams can, and in fact already are, addressing. Instead, the intent was to address the technical problems associated with the construction of the next generation ISOL facility and to initiate a discussion of the type of experimental equipment that should be developed for such a facility. We have tried to bring together in Oak Ridge the world`s experts in radioactive targets/ion sources, light and heavy-ion accelerators, and detection systems. After 1 1/2 days of overview presentations, the participants divided into three discussion groups (Experiments with Radioactive Beams, Target Ion Sources and Mass Separation, and Accelerators-Primary and Secondary) for 1 1/2 days of detailed discussions of the most pertinent issues. The final session was devoted to reports from each of the discussion groups and a general discussion of where to go from here. An outgrowth of these discussions was the establishment of working groups to coordinate future technical developments associated with the pertinent issues. The proceedings include the text of all the overview presentations, reports from each discussion group, as well as contributions from those participants who chose to provide the text of their presentations in the discussion groups and the Concluding Remarks. Selected papers have been indexed separately for inclusion in the Energy Science and Technology Database.

  13. Beam Dynamics Design and Simulation in Ion Linear Accelerators (

    Energy Science and Technology Software Center (OSTI)

    2006-08-01

    Orginally, the ray tracing code TRACK has been developed to fulfill the many special requirements for the Rare Isotope Accelerator Facility known as RIA. Since no available beam-dynamics code met all the necessary requirements, modifications to the code TRACK were introduced to allow end-to-end (from the ion souce to the production target) simulations of the RIA machine, TRACK is a general beam-dynamics code and can be applied for the design, commissioning and operation of modernmore » ion linear accelerators and beam transport systems.« less

  14. Beam manipulation techniques, nonlinear beam dynamics, and space charge effect in high energy high power accelerators

    SciTech Connect (OSTI)

    Lee, S. Y.

    2014-04-07

    We had carried out a design of an ultimate storage ring with beam emittance less than 10 picometer for the feasibility of coherent light source at X-ray wavelength. The accelerator has an inherent small dynamic aperture. We study method to improve the dynamic aperture and collective instability for an ultimate storage ring. Beam measurement and accelerator modeling are an integral part of accelerator physics. We develop the independent component analysis (ICA) and the orbit response matrix method for improving accelerator reliability and performance. In collaboration with scientists in National Laboratories, we also carry out experimental and theoretical studies on beam dynamics. Our proposed research topics are relevant to nuclear and particle physics using high brightness particle and photon beams.

  15. Advanced beam-dynamics simulation tools for the RIA driver linac,Part I: Low energy beam transport and radiofrequency quadrupole

    SciTech Connect (OSTI)

    Wangler, Thomas P.; Crandall, Kenneth R.; Garnett, Robert W.; Gorelov, Dmitry; Ostroumov, Petr; Qiang, Ji; Ryne, Robert; York, Richard

    2003-08-26

    Advanced Beam-Dynamics Simulation Tools for the RIA Driver Linac; Low Energy Beam Transport and Radiofrequency Quadrupole.

  16. Longitudinal beam dynamics with rf noise

    SciTech Connect (OSTI)

    Shih, H.J.; Ellison, J.A.; Cogburn, R.; Newberger, B.S.

    1993-06-01

    The Dome-Krinsky-Wang (DKW) diffusion-inaction theory for rf-noise-induced emittance dilution is reviewed and related to recent work on the approximation of stochastic processes by Markov processes. An accurate and efficient numerical procedure is developed to integrate the diffusion equation of the DKW theory. Tracking simulations are undertaken to check the validity of the theory in the parameter range of the Superconducting Super Collider (SSC) and to provide additional information. The study of effects of rf noise is applied to two problems of interest at the SSC: (1) determination of noise tolerance levels in the rf system, and (2) feasibility of beam extraction using crystal channeling.

  17. Report on the EU-US Environmental Biotechnology Workshop on Microbial Community Dynamics: Cooperation and Competition

    SciTech Connect (OSTI)

    Wall, Judy D.

    2013-07-01

    The Workshop on Microbial Community Dynamics: Cooperation and Competition to be held in the fall of 2012 in St. Louis, Missouri, USA, is an initiative of the Environmental Biotechnology Working Group of the EU-US Taskforce on Biotechnology Research, a cooperative program between the European Commission and the United States of America. The activities of the Environmental Biotechnology Working Group have as their goals to provide a forum for early career scientists from the US and EU to meet, to learn cutting edge research in the area of microbial biotechnology from world experts and to set the groundwork for future cooperation and collaboration. Workshop topics will address fundamental physiology and genetics of microbial communities that will contribute to advances in bioremediation, bioenergy conversion and carbon sequestration. Senior scientist participants will be world renowned experts who will present the current status of their fields and forecast research challenges and opportunities. It is a goal of the Environmental Biotechnology Working Group to facilitate the formation of direct collaborations among US and European scientists in programs of mutual interest and benefit. Therefore, the workshop will also provide an opportunity for members of the Working Group and attendees to identify areas where advancement is necessary and plan the steps necessary for realizing future research collaborations. In addition, time will be provided for mentoring of the early career scientists by the senior scientists on an individual basis.

  18. Radio Frequency Station - Beam Dynamics Interaction in Circular Accelerators

    SciTech Connect (OSTI)

    Mastoridis, Themistoklis; /Stanford U., Elect. Eng. Dept. /SLAC

    2011-03-01

    The longitudinal beam dynamics in circular accelerators is mainly defined by the interaction of the beam current with the accelerating Radio Frequency (RF) stations. For stable operation, Low Level RF (LLRF) feedback systems are employed to reduce coherent instabilities and regulate the accelerating voltage. The LLRF system design has implications for the dynamics and stability of the closed-loop RF systems as well as for the particle beam, and is very sensitive to the operating range of accelerator currents and energies. Stability of the RF loop and the beam are necessary conditions for reliable machine operation. This dissertation describes theoretical formalisms and models that determine the longitudinal beam dynamics based on the LLRF implementation, time domain simulations that capture the dynamic behavior of the RF station-beam interaction, and measurements from the Positron-Electron Project (PEP-II) and the Large Hadron Collider (LHC) that validate the models and simulations. These models and simulations are structured to capture the technical characteristics of the system (noise contributions, non-linear elements, and more). As such, they provide useful results and insight for the development and design of future LLRF feedback systems. They also provide the opportunity to study diverse longitudinal beam dynamics effects such as coupled-bunch impedance driven instabilities and single bunch longitudinal emittance growth. Coupled-bunch instabilities and RF station power were the performance limiting effects for PEP-II. The sensitivity of the instabilities to individual LLRF parameters, the effectiveness of alternative operational algorithms, and the possible tradeoffs between RF loop and beam stability were studied. New algorithms were implemented, with significant performance improvement leading to a world record current during the last PEP-II run of 3212 mA for the Low Energy Ring. Longitudinal beam emittance growth due to RF noise is a major concern for LHC

  19. SciDAC Advances and Applications in Computational Beam Dynamics

    SciTech Connect (OSTI)

    Ryne, R.; Abell, D.; Adelmann, A.; Amundson, J.; Bohn, C.; Cary, J.; Colella, P.; Dechow, D.; Decyk, V.; Dragt, A.; Gerber, R.; Habib, S.; Higdon, D.; Katsouleas, T.; Ma, K.-L.; McCorquodale, P.; Mihalcea, D.; Mitchell, C.; Mori, W.; Mottershead, C.T.; Neri, F.; Pogorelov, I.; Qiang, J.; Samulyak, R.; Serafini, D.; Shalf, J.; Siegerist, C.; Spentzouris, P.; Stoltz, P.; Terzic, B.; Venturini, M.; Walstrom, P.

    2005-06-26

    SciDAC has had a major impact on computational beam dynamics and the design of particle accelerators. Particle accelerators--which account for half of the facilities in the DOE Office of Science Facilities for the Future of Science 20 Year Outlook--are crucial for US scientific, industrial, and economic competitiveness. Thanks to SciDAC, accelerator design calculations that were once thought impossible are now carried routinely, and new challenging and important calculations are within reach. SciDAC accelerator modeling codes are being used to get the most science out of existing facilities, to produce optimal designs for future facilities, and to explore advanced accelerator concepts that may hold the key to qualitatively new ways of accelerating charged particle beams. In this poster we present highlights from the SciDAC Accelerator Science and Technology (AST) project Beam Dynamics focus area in regard to algorithm development, software development, and applications.

  20. Beam dynamics simulations of the NML photoinjector at Fermilab

    SciTech Connect (OSTI)

    Piot, P.; Sun, Y.-E.; Church, M.; /Fermilab

    2010-08-01

    Fermilab is currently constructing a superconducting RF (SRF) test linear accelerator at the New Muon Lab (NML). Besides testing SRF accelerating modules for ILC and Project-X, NML will also eventually support a variety of advanced accelerator R&D experiments. The NML incorporates a 40 MeV photoinjector capable of providing electron bunches with variable parameters. The photoinjector is based on the 1+1/2 cell DESY-type gun followed by two superconducting cavities. It also includes a magnetic bunch compressor, a round-to-flat beam transformer and a low-energy experimental area for beam physics experiments and beam diagnostics R&D. In this paper, we explore, via beam dynamics simulations, the performance of the photoinjector for different operating scenarios.

  1. Advanced beam-dynamics simulation tools for RIA.

    SciTech Connect (OSTI)

    Garnett, R. W.; Wangler, T. P.; Billen, J. H.; Qiang, J.; Ryne, R.; Crandall, K. R.; Ostroumov, P.; York, R.; Zhao, Q.; Physics; LANL; LBNL; Tech Source; Michigan State Univ.

    2005-01-01

    We are developing multi-particle beam-dynamics simulation codes for RIA driver-linac simulations extending from the low-energy beam transport (LEBT) line to the end of the linac. These codes run on the NERSC parallel supercomputing platforms at LBNL, which allow us to run simulations with large numbers of macroparticles. The codes have the physics capabilities needed for RIA, including transport and acceleration of multiple-charge-state beams, beam-line elements such as high-voltage platforms within the linac, interdigital accelerating structures, charge-stripper foils, and capabilities for handling the effects of machine errors and other off-normal conditions. This year will mark the end of our project. In this paper we present the status of the work, describe some recent additions to the codes, and show some preliminary simulation results.

  2. Beam-dynamics driven design of the LHeC energy-recovery linac...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Beam-dynamics driven design of the LHeC energy-recovery linac Citation Details In-Document Search Title: Beam-dynamics driven design of the LHeC energy-recovery ...

  3. Beam-dynamics driven design of the LHeC energy-recovery linac...

    Office of Scientific and Technical Information (OSTI)

    Beam-dynamics driven design of the LHeC energy-recovery linac Citation Details In-Document Search Title: Beam-dynamics driven design of the LHeC energy-recovery linac The LHeC ...

  4. Beam Dynamics Studies of Parallel-Bar Deflecting Cavities

    SciTech Connect (OSTI)

    S. Ahmed, G. Krafft, K. Detrick, S. Silva, J. Delayen, M. Spata ,M. Tiefenback, A. Hofler ,K. Beard

    2011-03-01

    We have performed three-dimensional simulations of beam dynamics for parallel-bar transverse electromagnetic mode (TEM) type RF separators: normal- and super-conducting. The compact size of these cavities as compared to conventional TM$_{110}$ type structures is more attractive particularly at low frequency. Highly concentrated electromagnetic fields between the parallel bars provide strong electrical stability to the beam for any mechanical disturbance. An array of six 2-cell normal conducting cavities or a one- or two-cell superconducting structure are enough to produce the required vertical displacement at the Lambertson magnet. Both the normal and super-conducting structures show very small emittance dilution due to the vertical kick of the beam.

  5. Beam dynamics studies for transverse electromagnetic mode type rf deflectors

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Ahmed, Shahid; Krafft, Geoffrey A.; Deitrick, Kirsten; De Silva, Subashini U.; Delayen, Jean R.; Spata, Mike; Tiefenback, Michael; Hofler, Alicia; Beard, Kevin

    2012-02-14

    We have performed three-dimensional simulations of beam dynamics for transverse electromagnetic mode (TEM) type rf deflectors: normal and superconducting. The compact size of these cavities as compared to the conventional TM110 type structures is more attractive particularly at low frequency. Highly concentrated electromagnetic fields between the parallel bars provide strong electrical stability to the beam for any mechanical disturbance. An array of six 2-cell normal conducting cavities or a single cell superconducting structure is enough to produce the required vertical displacement at the target point. Both the normal and superconducting structures show very small emittance dilution due to the verticalmore » kick of the beam.« less

  6. Dynamical dipole mode in fusion reactions with exotic nuclear beams

    SciTech Connect (OSTI)

    Baran, V.; Rizzo, C.; Colonna, M.; Toro, M. Di; Pierroutsakou, D.

    2009-02-15

    We report the properties of the prompt dipole radiation, produced via a collective bremsstrahlung mechanism, in fusion reactions with exotic beams. We show that the {gamma} yield is sensitive to the density dependence of the symmetry energy below/around saturation. Moreover, we find that the angular distribution of the emitted photons from such fast collective mode can represent a sensitive probe of its excitation mechanism and of fusion dynamics in the entrance channel.

  7. RIAPMTQ/Impact : beam-dynamics simulation tool for RIA.

    SciTech Connect (OSTI)

    Wangler, T. P.; Billen, J. H.; Garnett, R. W.; Qiang, J.; Ryne, R.; Crandall, K. R.; Ostroumov, P.; Aseev, V. N.; Mustapha, B.; York, R. C.; Wu, X.; Zhao, Q.; Gorelov, D.; Doleans, M.; Physics; LANL; Tech Source; Michigan State Univ.

    2006-01-01

    We have developed a pair of multiparticle beam dynamics codes for end-to-end computer simulations of the proposed RIA heavy-ion driver linac. The two codes are: (1) an adaptation of PARMTEQ called RIAPMTQ for the normal-conducting-linac front end, and (2) IMPACT for the superconducting linac. The codes run on a PC as well as on parallel supercomputing platforms such as NERSC at LBNL. The parallel capability allows us to run simulations with large numbers of macroparticles for the computation of beam halo and beam-losses. The codes are being benchmarked for rms beam properties against previously existing codes at ANL and MSU. The work is being performed by a collaboration including LANL, LBNL, ANL, and Michigan State University (MSU). In this paper we present an overview, the status of the work, comparison of simulation results from RIAPMTQ and the ANL code TRACK for the ANL front-end design, and the first RIAPMTQ/IMPACT end-to-end multiprocessor simulation for the MSU design.

  8. Studies of beam dynamics in relativistic klystron two-beam accelerators

    SciTech Connect (OSTI)

    Lidia, Steven M.

    1999-11-01

    Two-beam accelerators (TBAs) based upon free-electron lasers (FELs) or relativistic klystrons (RK-TBAs) have been proposed as efficient power sources for next generation high-energy linear colliders. Studies have demonstrated the possibility of building TBAs from X-band ({approximately}8-12 GHz) through Ka band ({approximately} 30-35 GHz) frequency regions. Provided that further prototyping shows stable beam propagation with minimal current loss and production of good quality, high-power rf fields, this technology is compatible with current schemes for electron-positron colliders in the multi-TeV center-of-mass scale. A new method of simulating the beam dynamics in accelerators of this type has been developed in this dissertation. There are three main components to this simulation. The first is a tracking algorithm to generate nonlinear transfer maps for pushing noninteracting particles through the external fields. The second component is a 3D Particle-In-Cell (PIC) algorithm that solves a set of Helmholtz equations for the self-fields, including the conducting boundary condition, and generates impulses that are interleaved with the nonlinear maps by means of a split-operation algorithm. The Helmholtz equations are solved by a multi-grid algorithm. The third component is an equivalent circuit equation solver that advances the modal rf cavity fields in time due to excitation by the modulated beam. The RTA project is described, and the simulation code is used to design the latter portions of the experiment. Detailed calculations of the beam dynamics and of the rf cavity output are presented and discussed. A beamline design is presented that will generate nearly 1.2 GW of power from 40 input, gain, and output rv cavities over a 10 m distance. The simulations show that beam current losses are acceptable, and that longitudinal and transverse focusing techniques are sufficient capable of maintaining a high degree of beam quality along the entire beamline. Additional

  9. Crossed-beam studies of the dynamics of radical reactions

    SciTech Connect (OSTI)

    Liu, K.

    1993-12-01

    The objective of this program is to characterize the detailed dynamics of elementary radical reactions and to provide a better understanding of radical reactivity in general. The radical beam is typically generated by a laser photolysis method. After colliding with the reacting molecule in a crossed-beam apparatus, the reaction product state distribution is interrogated by laser spectroscopic techniques. Several radicals of combustion significance, such as O, CH, OH, CN and NCO have been successfully generated and their collisional behavior at the state-to-state integral cross section level of detail has been studied in this manner. During the past year, the detection system has been converted from LIF to REMPI schemes, and the emphasis of this program shifted to investigate the product angular distributions. Both inelastic and reactive processes have been studied.

  10. Accessing defect dynamics using intense, nanosecond pulsed ion beams

    SciTech Connect (OSTI)

    Persaud, A.; Barnard, J. J.; Guo, H.; Hosemann, P.; Lidia, S.; Minor, A. M.; Seidl, P. A.; Schenkel, T.

    2015-06-18

    Gaining in-situ access to relaxation dynamics of radiation induced defects will lead to a better understanding of materials and is important for the verification of theoretical models and simulations. We show preliminary results from experiments at the new Neutralized Drift Compression Experiment (NDCX-II) at Lawrence Berkeley National Laboratory that will enable in-situ access to defect dynamics through pump-probe experiments. Here, the unique capabilities of the NDCX-II accelerator to generate intense, nanosecond pulsed ion beams are utilized. Preliminary data of channeling experiments using lithium and potassium ions and silicon membranes are shown. We compare these data to simulation results using Crystal Trim. Furthermore, we discuss the improvements to the accelerator to higher performance levels and the new diagnostics tools that are being incorporated.

  11. Accessing defect dynamics using intense, nanosecond pulsed ion beams

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Persaud, A.; Barnard, J. J.; Guo, H.; Hosemann, P.; Lidia, S.; Minor, A. M.; Seidl, P. A.; Schenkel, T.

    2015-06-18

    Gaining in-situ access to relaxation dynamics of radiation induced defects will lead to a better understanding of materials and is important for the verification of theoretical models and simulations. We show preliminary results from experiments at the new Neutralized Drift Compression Experiment (NDCX-II) at Lawrence Berkeley National Laboratory that will enable in-situ access to defect dynamics through pump-probe experiments. Here, the unique capabilities of the NDCX-II accelerator to generate intense, nanosecond pulsed ion beams are utilized. Preliminary data of channeling experiments using lithium and potassium ions and silicon membranes are shown. We compare these data to simulation results using Crystalmore » Trim. Furthermore, we discuss the improvements to the accelerator to higher performance levels and the new diagnostics tools that are being incorporated.« less

  12. ORBIT : BEAM DYNAMICS CALCULATIONS FOR HIGH - INTENSITY RINGS.

    SciTech Connect (OSTI)

    HOLMES,J.A.; DANILOV,V.; GALAMBOS,J.; SHISHLO,A.; COUSINEAU,S.; CHOU,W.; MICHELOTTI,L.; OSTIGUY,F.; WEI,J.

    2002-06-03

    We are developing a computer code, ORBIT, specifically for beam dynamics calculations in high-intensity rings. Our approach allows detailed simulation of realistic accelerator problems. ORBIT is a particle-in-cell tracking code that transports bunches of interacting particles through a series of nodes representing elements, effects, or diagnostics that occur in the accelerator lattice. At present, ORBIT contains detailed models for strip-foil injection including painting and foil scattering; rf focusing and acceleration; transport through various magnetic elements; longitudinal and transverse impedances; longitudinal, transverse, and three-dimensional space charge forces; collimation and limiting apertures; and the calculation of many useful diagnostic quantities. ORBIT is an object-oriented code, written in C++ and utilizing a scripting interface for the convenience of the user. Ongoing improvements include the addition of a library of accelerator maps, BEAMLINE/MXYZPTLK the introduction of a treatment magnet errors and fringe fields; the conversion of the scripting interface to the standard scripting language, Python; and the parallelization of the computations using MPI. The ORBIT code is an open source, powerful, and convenient tool for studying beam dynamics in high-intensity rings.

  13. Electron-beam dynamics for an advanced flash-radiography accelerator

    SciTech Connect (OSTI)

    Ekdahl, Carl August Jr.

    2015-06-22

    Beam dynamics issues were assessed for a new linear induction electron accelerator. Special attention was paid to equilibrium beam transport, possible emittance growth, and beam stability. Especially problematic would be high-frequency beam instabilities that could blur individual radiographic source spots, low-frequency beam motion that could cause pulse-to-pulse spot displacement, and emittance growth that could enlarge the source spots. Beam physics issues were examined through theoretical analysis and computer simulations, including particle-in cell (PIC) codes. Beam instabilities investigated included beam breakup (BBU), image displacement, diocotron, parametric envelope, ion hose, and the resistive wall instability. Beam corkscrew motion and emittance growth from beam mismatch were also studied. It was concluded that a beam with radiographic quality equivalent to the present accelerators at Los Alamos will result if the same engineering standards and construction details are upheld.

  14. Dynamic Processes in Biology, Chemistry, and Materials Science: Opportunities for UltraFast Transmission Electron Microscopy - Workshop Summary Report

    SciTech Connect (OSTI)

    Kabius, Bernd C.; Browning, Nigel D.; Thevuthasan, Suntharampillai; Diehl, Barbara L.; Stach, Eric A.

    2012-07-25

    This report summarizes a 2011 workshop that addressed the potential role of rapid, time-resolved electron microscopy measurements in accelerating the solution of important scientific and technical problems. A series of U.S. Department of Energy (DOE) and National Academy of Science workshops have highlighted the critical role advanced research tools play in addressing scientific challenges relevant to biology, sustainable energy, and technologies that will fuel economic development without degrading our environment. Among the specific capability needs for advancing science and technology are tools that extract more detailed information in realistic environments (in situ or operando) at extreme conditions (pressure and temperature) and as a function of time (dynamic and time-dependent). One of the DOE workshops, Future Science Needs and Opportunities for Electron Scattering: Next Generation Instrumentation and Beyond, specifically addressed the importance of electron-based characterization methods for a wide range of energy-relevant Grand Scientific Challenges. Boosted by the electron optical advancement in the last decade, a diversity of in situ capabilities already is available in many laboratories. The obvious remaining major capability gap in electron microscopy is in the ability to make these direct in situ observations over a broad spectrum of fast (µs) to ultrafast (picosecond [ps] and faster) temporal regimes. In an effort to address current capability gaps, EMSL, the Environmental Molecular Sciences Laboratory, organized an Ultrafast Electron Microscopy Workshop, held June 14-15, 2011, with the primary goal to identify the scientific needs that could be met by creating a facility capable of a strongly improved time resolution with integrated in situ capabilities. The workshop brought together more than 40 leading scientists involved in applying and/or advancing electron microscopy to address important scientific problems of relevance to DOE’s research

  15. Beam dynamics in a long-pulse linear induction accelerator

    SciTech Connect (OSTI)

    Ekdahl, Carl; Abeyta, Epifanio O; Aragon, Paul; Archuleta, Rita; Cook, Gerald; Dalmas, Dale; Esquibel, Kevin; Gallegos, Robert A; Garnett, Robert; Harrison, James F; Johnson, Jeffrey B; Jacquez, Edward B; Mc Cuistian, Brian T; Montoya, Nicholas A; Nath, Subrato; Nielsen, Kurt; Oro, David; Prichard, Benjamin; Rose, Chris R; Sanchez, Manolito; Schauer, Martin M; Seitz, Gerald; Schulze, Martin; Bender, Howard A; Broste, William B; Carlson, Carl A; Frayer, Daniel K; Johnson, Douglas E; Tom, C Y; Trainham, C; Williams, John; Scarpetti, Raymond; Genoni, Thomas; Hughes, Thomas; Toma, Carsten

    2010-01-01

    The second axis of the Dual Axis Radiography of Hydrodynamic Testing (DARHT) facility produces up to four radiographs within an interval of 1.6 microseconds. It accomplishes this by slicing four micro-pulses out of a long 1.8-kA, 16.5-MeV electron beam pulse and focusing them onto a bremsstrahlung converter target. The long beam pulse is created by a dispenser cathode diode and accelerated by the unique DARHT Axis-II linear induction accelerator (LIA). Beam motion in the accelerator would be a problem for radiography. High frequency motion, such as from beam breakup instability, would blur the individual spots. Low frequency motion, such as produced by pulsed power variation, would produce spot to spot differences. In this article, we describe these sources of beam motion, and the measures we have taken to minimize it.

  16. SciDAC advances in beam dynamics simulation: from light sources to colliders

    SciTech Connect (OSTI)

    Qiang, Ji; Qiang, J.; Borland, M.; Kabel, A.; Li, R.; Ryne, R.; Stern, E.; Wang, Y.; Wasserman, H.; Zhang, Y.

    2008-06-16

    In this paper, we report on progress that has been made in beam dynamics simulation, from light sources to colliders, during the first year of SciDAC-II accelerator project,"Community Petascale Project for Accelerator Science and Simulation (ComPASS)." Several parallel computational tools for beam dynamics simulation will be described. A number of applications in current and future accelerator facilities, e.g., LCLS, RHIC, Tevatron, LHC, ELIC, are presented.

  17. The 19th ICFA Advanced Beam Dynamics Workshop on Future Light...

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

    ... the system is excited with a conventional laser and the structure changes are probed ... Bio-fragments and bio-molecules are also an extension of this work. The radiation damage ...

  18. Injector Beam Dynamics for a High-Repetition Rate 4th-Generation Light Source

    SciTech Connect (OSTI)

    Papadopoulos, C. F.; Corlett, J.; Emma, P.; Filippetto, D.; Penn, G.; Qiang, J.; Reinsch, M.; Sannibale, F.; Steier, C.; Venturini, M.; Wells, R.

    2013-05-20

    We report on the beam dynamics studies and optimization methods for a high repetition rate (1 MHz) photoinjector based on a VHF normal conducting electron source. The simultaneous goals of beamcompression and reservation of 6-dimensional beam brightness have to be achieved in the injector, in order to accommodate a linac driven FEL light source. For this, a parallel, multiobjective optimization algorithm is used. We discuss the relative merits of different injector design points, as well as the constraints imposed on the beam dynamics by technical considerations such as the high repetition rate.

  19. Electron-Beam Dynamics for an Advanced Flash-Radiography Accelerator

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Ekdahl, Carl

    2015-11-17

    Beam dynamics issues were assessed for a new linear induction electron accelerator being designed for multipulse flash radiography of large explosively driven hydrodynamic experiments. Special attention was paid to equilibrium beam transport, possible emittance growth, and beam stability. Especially problematic would be high-frequency beam instabilities that could blur individual radiographic source spots, low-frequency beam motion that could cause pulse-to-pulse spot displacement, and emittance growth that could enlarge the source spots. Furthermore, beam physics issues were examined through theoretical analysis and computer simulations, including particle-in-cell codes. Beam instabilities investigated included beam breakup, image displacement, diocotron, parametric envelope, ion hose, and themore » resistive wall instability. The beam corkscrew motion and emittance growth from beam mismatch were also studied. It was concluded that a beam with radiographic quality equivalent to the present accelerators at Los Alamos National Laboratory will result if the same engineering standards and construction details are upheld.« less

  20. Workshop History

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

    Workshop History The 2014 event is the seventh joint workshop held by the EFCOG ESH Electrical Safety subgroup. The first "joint" Electrical Safety Workshop was held in the summer...

  1. Next Generation Light Source Workshops

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

    Next Generation Light Source Workshops A series of workshops will be held in late August with the goal of refining the scientific drivers for the facility and translating the scientific needs into the technical performance requirements. Feedback from these workshops will provide important input for advancing the design of the facility. Workshops are planned in the following areas Fundamental Atomic, Molecular, Optical Physics & Combustion Dynamics Mon. Aug. 20 - Tues. Aug 21, 2012 Physical

  2. TRACE3D. Interactive Beam-Dynamics Program

    SciTech Connect (OSTI)

    Singleton, L.; Yao, C.Y.

    1993-12-01

    TRACE3D is an interactive program that calculates the envelopes of a bunched beam, including linear space-charge forces, through a user-defined system. The transport system may consist of the following elements: drift, thin lens, quadrupole, permanent magnet quadrupole, solenoid, doublet, triplet, bending magnet, edge angle (for bend), RF gap, radio-frequency-quadrupole cell, RF cavity, coupled-cavity tank, user-desired element, coordinate rotation, and identical element. The beam is represented by a 6X6 matrix defining a hyper-ellipsoid in six-dimensional phase space. The projection of this hyperellipsoid on any two-dimensional plane is an ellipse that defines the boundary of the beam in that plane.

  3. Crossed Molecular Beam Studies and Dynamics of Decomposition of Chemically Activated Radicals

    DOE R&D Accomplishments [OSTI]

    Lee, Y. T.

    1973-09-01

    The power of the crossed molecular beams method in the investigation of the dynamics of chemical reactions lies mainly in the direct observation of the consequences of single collisions of well controlled reactant molecules. The primary experimental observations which provide information on reaction dynamics are the measurements of angular and velocity distributions of reaction products.

  4. PROCEEDINGS OF RIKEN BNL RESEARCH CENTER WORKSHOP ON BARYON DYNAMICS AT RHIC, MARCH 28-30, 2002, BROOKHAVEN NATIONAL LABORATORY.

    SciTech Connect (OSTI)

    GYULASSY,M.; KHARZEEV,D.; XU,N.

    2002-03-28

    One of the striking observations at RHIC is the large valence baryon rapidity density observed at mid rapidity in central Au+Au at 130 A GeV. There are about twice as many valence protons at mid-rapidity than predicted based on extrapolation from p+p collisions. Even more striking PHENIX observed that the high pt spectrum is dominated by baryons and anti-baryons. The STAR measured event anisotropy parameter v2 for lambdas are as high as charged particles at pt {approx} 2.5 GeV/c. These are completely unexpected based on conventional pQCD parton fragmentation phenomenology. One exciting possibility is that these observables reveal the topological gluon field origin of baryon number transport referred to as baryon junctions. Another is that hydrodynamics may apply up to high pt in A+A. There is no consensus on what are the correct mechanisms for producing baryons and hyperons at high pt and large rapidity shifts and the new RHIC data provide a strong motivation to hold a meeting focusing on this class of observables. The possible role of junctions in forming CP violating domain walls and novel nuclear bucky-ball configurations would also be discussed. In this workshop, we focused on all measured baryon distributions at RHIC energies and related theoretical considerations. To facilitate the discussions, results of heavy ion collisions at lower beam energies, results from p+A /p+p/e+e collisions were included. Some suggestions for future measurements have been made at the workshop.

  5. Dynamics of ion beam charge neutralization by ferroelectric plasma sources

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Stepanov, Anton D.; Gilson, Erik P.; Grisham, Larry R.; Kaganovich, Igor D.; Davidson, Ronald C.

    2016-04-27

    Ferroelectric Plasma Sources (FEPSs) can generate plasma that provides effective space-charge neutralization of intense high-perveance ion beams, as has been demonstrated on the Neutralized Drift Compression Experiment NDCX-I and NDCX-II. This article presents experimental results on charge neutralization of a high-perveance 38 keV Ar+ beam by a plasma produced in a FEPS discharge. By comparing the measured beam radius with the envelope model for space-charge expansion, it is shown that a charge neutralization fraction of 98% is attainable with sufficiently dense FEPS plasma. The transverse electrostatic potential of the ion beam is reduced from 15V before neutralization to 0.3 V,more » implying that the energy of the neutralizing electrons is below 0.3 eV. Measurements of the time-evolution of beam radius show that near-complete charge neutralization is established similar to –5 μs after the driving pulse is applied to the FEPS and can last for 35 μs. It is argued that the duration of neutralization is much longer than a reasonable lifetime of the plasma produced in the sub-mu s surface discharge. Measurements of current flow in the driving circuit of the FEPS show the existence of electron emission into vacuum, which lasts for tens of mu s after the high voltage pulse is applied. Lastly, it is argued that the beam is neutralized by the plasma produced by this process and not by a surface discharge plasma that is produced at the instant the high-voltage pulse is applied.« less

  6. Workshop Presentations

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

    Presentations Workshop Presentations Large Scale Computing and Storage Requirements for Fusion Energy Sciences An FES ASCR NERSC Workshop August 3-4, 2010 Sort by: Default | ...

  7. Workshop Logistics

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

    Logistics Workshop Logistics Large Scale Computing and Storage Requirements for Advanced Scientific Computing Research January 5-6, 2011 Location The workshop will be held at...

  8. NIF Workshops

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

    NIF Workshops Laser Safety Laser Safety Officer Workshop 2014 For individuals with laser safety responsibility and interest in a research, industrial or academic setting who want ...

  9. Workshop Agenda

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

    Agenda Workshop Agenda Large Scale Computing and Storage Requirements for High Energy Physics An HEP ASCR NERSC Workshop November 12-13, 2009 >> Download and View these ...

  10. 2013 Workshops

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

    Workshops Print banner Home Agenda Awards Exhibitors Lodging Posters Registration T-Shirt Contest Transportation Workshops Contact Us User Meeting Archives Users' Executive...

  11. Formation and nonlinear dynamics of the squeezed state of a helical electron beam with additional deceleration

    SciTech Connect (OSTI)

    Egorov, E. N. Koronovskii, A. A.; Kurkin, S. A.; Hramov, A. E.

    2013-11-15

    Results of numerical simulations and analysis of the formation and nonlinear dynamics of the squeezed state of a helical electron beam in a vircator with a magnetron injection gun as an electron source and with additional electron deceleration are presented. The ranges of control parameters where the squeezed state can form in such a system are revealed, and specific features of the system dynamics are analyzed. It is shown that the formation of a squeezed state of a nonrelativistic helical electron beam in a system with electron deceleration is accompanied by low-frequency longitudinal dynamics of the space charge.

  12. LHeC ERL Design and Beam-dynamics Issues

    SciTech Connect (OSTI)

    S.A. Bogacz, I. Shin, D. Schulte, F. Zimmermann

    2011-09-01

    We discuss machine and beam parameter choices for a Linac-Ring option of the Large Hadron electron Collider (LHeC) based on the LHC. With the total wall-plug power limited to 100 MW and a target current of about 6 mA the desired luminosity of 1033 cm-2 s-1 can be reached, providing one exploits unique features of the Energy Recovery Linac (ERL). Here, we describe the overall layout of such ERL complex located on the LHC site. We present an optimized multi-pass linac optics enabling operation of the proposed 3-pass Recirculating Linear Accelerator (RLA) in the Energy Recovery mode. We also describe emittance preserving return arc optics architecture; including layout and optics of the arc switch-yard. Furthermore, we discuss importance of collective effects such as: beam breakup in the RLA, as well as ion accumulation, with design-integrated mitigation measures, and the electron-beam disruption in collision. Finally, a few open questions are highlighted.

  13. IPHE Infrastructure Workshop - Workshop Proceedings, February...

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

    IPHE Infrastructure Workshop - Workshop Proceedings, February 25-26, 2010 Sacramento, CA IPHE Infrastructure Workshop - Workshop Proceedings, February 25-26, 2010 Sacramento, CA ...

  14. Watson Workshop

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

    Home » Events » HPC Workshops » Watson Workshop Watson Workshop January 21, 2016 The Data and Analytics Services group is coordinating an IBM Watson Workshop at LBL and NERSC on Thursday, January 21. Watson is an artificial intelligence system combining advanced natural language processing, machine learning, and information retrieval technologies. The workshop provides attendees with an overview of Watson and an opportunity to explore potential partnerships with the Watson team. The overview

  15. Workshop Presentations

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

    Presentations Workshop Presentations Large Scale Computing and Storage Requirements for Basic Energy Sciences An BES / ASCR / NERSC Workshop February 9-10, 2010 Sort by: Default | Name | Date (low-high) | Date (high-low) BES/NERSC Requirements Gathering Workshop, Workshop Goals February 9, 2010 | Author(s): Yukiko Sekine | Workshop outline, logistics, format, procedures February 9, 2010 | Author(s): Richard Gerber | BES Program Office Research Directions February 9, 2010 | Author(s): Mark

  16. SciDAC Advances in Beam Dynamics Simulation: From Light Sources to Colliders

    SciTech Connect (OSTI)

    Qiang, J.; Borland, M.; Kabel, A.; Li, R.; Ryne, R.; Stern, E.; Wang, Y.; Wasserman, H.; Zhang, Y.; /SLAC

    2011-11-14

    In this paper, we report on progress that has been made in beam dynamics simulation, from light sources to colliders, during the first year of the SciDAC-2 accelerator project 'Community Petascale Project for Accelerator Science and Simulation (ComPASS).' Several parallel computational tools for beam dynamics simulation are described. Also presented are number of applications in current and future accelerator facilities (e.g., LCLS, RHIC, Tevatron, LHC, and ELIC). Particle accelerators are some of most important tools of scientific discovery. They are widely used in high-energy physics, nuclear physics, and other basic and applied sciences to study the interaction of elementary particles, to probe the internal structure of matter, and to generate high-brightness radiation for research in materials science, chemistry, biology, and other fields. Modern accelerators are complex and expensive devices that may be several kilometers long and may consist of thousands of beamline elements. An accelerator may transport trillions of charged particles that interact electromagnetically among themselves, that interact with fields produced by the accelerator components, and that interact with beam-induced fields. Large-scale beam dynamics simulations on massively parallel computers can help provide understanding of these complex physical phenomena, help minimize design cost, and help optimize machine operation. In this paper, we report on beam dynamics simulations in a variety of accelerators ranging from next generation light sources to high-energy ring colliders that have been studied during the first year of the SciDAC-2 accelerator project.

  17. Beam-Based Alignment, Tuning and Beam Dynamics Studies for the ATF2 Extraction Line and Final Focus System

    SciTech Connect (OSTI)

    White, Glen R.; Molloy, S.; Woodley, M.; /SLAC

    2008-07-25

    Using a new extraction line currently under construction, the ATF2 experiment plans to test the novel compact final focus optics design with local chromaticity correction intended for use in future linear colliders. With a 1.3 GeV design beam of 30nm normalized vertical emittance extracted from the ATF damping ring, the primary goal is to achieve a vertical spot-size at the IP waist of 37nm. We discuss our planned strategy for tuning the ATF2 beam to meet the primary goal. Simulation studies have been performed to asses the effectiveness of the strategy, including 'static' (installation) errors and dynamical effects (ground-motion, mechanical vibration, ring extraction jitter etc.). We have simulated all steps in the tuning procedure, from initial orbit establishment to final IP spot-size tuning. Through a Monte Carlo study of 100's of simulation seeds we find we can achieve a spot-size within {approx}10% of the design optics value in at least 75% of cases. We also ran a simulation to study the long-term performance with the use of beam-based feedbacks.

  18. Low emittance growth funneling line: preliminary design and beam dynamics study

    SciTech Connect (OSTI)

    Guy, F.W.

    1985-01-01

    A theoretical design study has resulted in a conceptual funneling-line design that has a transverse emittance growth limited to only 15% based on beam-dynamics calculations. Two 2-MeV, 100-mA proton beams are funneled from a two-channel, 212.5-MHz radio-frequency quadrupole (RFQ) to a single beam suitable for injection into a 425-MHz linac. The design uses permanent-magnet quadrupoles, dipoles, and combined-function elements. The low emittance growth is obtained by arranging the focusing strength, the periodic structure, and the bending elements so as to minimize abrupt changes in the beam environmental with consequent charge redistribution and space-charge-caused emittance growth.

  19. Workshop Agenda

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

    Agenda Workshop Agenda Large Scale Computing and Storage Requirements for Advanced Scientific Computing Research ASCR / NERSC Workshop January 5-6, 2011 >> Download and View these presentations Wednesday, January 5 Time Topic Presenter 8:00 Arrive, informal discussions 8:30 Welcome, introductions, workshop goals, charge to committee Yukiko Sekine, DOE-SC/ASCR 8:50 Workshop outline, logistics, format Harvey Wasserman, NERSC 9:00 ASCR Program Office Research Directions Karen Pao, DOE / ASCR

  20. Workshop Agenda

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

    Agenda Workshop Agenda Large Scale Computing and Storage Requirements for Fusion Energy Sciences FES / ASCR / NERSC Workshop August 3-4, 2010 >> Download and View these presentations Tuesday, August 3 Time Topic Presenter 8:00 Arrive, informal discussions 8:30 Welcome, introductions, workshop goals, charge to committee Yukiko Sekine, DOE-SC/ASCR 8:50 Workshop outline, logistics, format, procedures Harvey Wasserman, NERSC 9:00 FES Program Office Research Directions John Mandrekas , DOE /

  1. Workshop Agenda

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

    Agenda Workshop Agenda Large Scale Computing and Storage Requirements for High Energy Physics An HEP / ASCR / NERSC Workshop November 12-13, 2009 >> Download and View these Presentations. Thursday, November 12 8:00 am Arrive, informal discussions 8:30 am Welcome, introductions, workshop goals, charge to committee Yukiko Sekine, DOE-SC/ASCR 8:45 am Workshop outline, logistics, format, procedures Harvey Wasserman, NERSC 9:00 am HEP Program Office Research Directions Amber Boehnlein, DOE /

  2. Workshop Presentations

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

    Presentations Workshop Presentations Large Scale Computing and Storage Requirements for Advanced Scientific Computing Research An ASCR / NERSC Workshop January 5-6, 2011 Sort by: Default | Name | Date (low-high) | Date (high-low) Welcome, introductions, workshop goals, charge to committee January 5, 2011 | Author(s): Yukiko Sekine | Workshop outline, logistics, format January 5, 2011 | Author(s): Harvey Wasserman | ASCR Program Office Research Directions January 5, 2011 | Author(s): Karen Pao |

  3. Workshop Presentations

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

    Presentations Workshop Presentations Large Scale Computing and Storage Requirements for Fusion Energy Sciences An FES / ASCR / NERSC Workshop August 3-4, 2010 Sort by: Default | Name | Date (low-high) | Date (high-low) FES/NERSC Requirements Gathering Workshop August 3, 2010 | Author(s): Yukiko Sekine | Workshop Goals & Process: Large Scale Computing and Storage Requirements for Fusion Energy Sciences August 3, 2010 | Author(s): Harvey Wasserman | FES Overview August 3, 2010 | Author(s):

  4. Progress on Optimization of the Nonlinear Beam Dynamics in the MEIC Collider Rings

    SciTech Connect (OSTI)

    Morozov, Vasiliy S.; Derbenev, Yaroslav S.; Lin, Fanglei; Pilat, Fulvia; Zhang, Yuhong; Cai, Y.; Nosochkov, Y. M.; Sullivan, Michael; Wang, M.-H.; Wienands, Uli

    2015-09-01

    One of the key design features of the Medium-energy Electron-Ion Collider (MEIC) proposed by Jefferson Lab is a small beta function at the interaction point (IP) allowing one to achieve a high luminosity of up to 1034 cm-2s-1. The required strong beam focusing unavoidably causes large chromatic effects such as chromatic tune spread and beam smear at the IP, which need to be compensated. This paper reports recent progress in our development of a chromaticity correction scheme for the ion ring including optimization of dynamic aperture and momentum acceptance.

  5. Characterization of beam dynamics in the APS injector rings using time-resolved imaging techniques

    SciTech Connect (OSTI)

    Yang, B.X.; Lumpkin, A.H.; Borland, M.

    1997-06-01

    Images taken with streak cameras and gated intensified cameras with both time (longitudinal) and spatial (transverse) resolution reveal a wealth of information about circular accelerators. The authors illustrate a novel technique by a sequence of dual-sweep streak camera images taken at a high dispersion location in the booster synchrotron, where the horizontal coordinate is strongly correlated with the particle energy and the {open_quotes}top-view{close_quotes} of the beam gives a good approximation to the particle density distribution in the longitudinal phase space. A sequence of top-view images taken fight after injection clearly shows the beam dynamics in the phase space. We report another example from the positron accumulator ring for the characterization of its beam compression bunching with the 12th harmonic rf.

  6. Slip-stacking Dynamics for High-Power Proton Beams at Fermilab

    SciTech Connect (OSTI)

    Eldred, Jeffrey Scott

    2015-12-01

    Slip-stacking is a particle accelerator configuration used to store two particle beams with different momenta in the same ring. The two beams are longitudinally focused by two radiofrequency (RF) cavities with a small frequency difference between them. Each beam is synchronized to one RF cavity and perturbed by the other RF cavity. Fermilab uses slip-stacking in the Recycler so as to double the power of the 120 GeV proton beam in the Main Injector. This dissertation investigates the dynamics of slip-stacking beams analytically, numerically and experimentally. In the analytic analysis, I find the general trajectory of stable slip-stacking particles and identify the slip-stacking parametric resonances. In the numerical analysis, I characterize the stable phase-space area and model the particle losses. In particular, I evaluate the impact of upgrading the Fermilab Booster cycle-rate from 15 Hz to 20 Hz as part of the Proton Improvement Plan II (PIP-II). The experimental analysis is used to verify my approach to simulating slip-stacking loss. I design a study for measuring losses from the longitudinal single-particle dynamics of slip-stacking as a function of RF cavity voltage and RF frequency separation. I further propose the installation of a harmonic RF cavity and study the dynamics of this novel slip-stacking configuration. I show the harmonic RF cavity cancels out parametric resonances in slip-stacking, reduces emittance growth during slip-stacking, and dramatically enhances the stable phase-space area. The harmonic cavity is expected to reduce slip-stacking losses to far exceed PIP-II requirements. These results raise the possibility of extending slip-stacking beyond the PIP-II era.

  7. Radiation defect dynamics in Si at room temperature studied by pulsed ion beams

    SciTech Connect (OSTI)

    Wallace, J. B.; Myers, M. T.; Charnvanichborikarn, S.; Bayu Aji, L. B.; Kucheyev, S. O.; Shao, L.

    2015-10-07

    The evolution of radiation defects after the thermalization of collision cascades often plays the dominant role in the formation of stable radiation disorder in crystalline solids of interest to electronics and nuclear materials applications. Here, we explore a pulsed-ion-beam method to study defect interaction dynamics in Si crystals bombarded at room temperature with 500 keV Ne, Ar, Kr, and Xe ions. The effective time constant of defect interaction is measured directly by studying the dependence of lattice disorder, monitored by ion channeling, on the passive part of the beam duty cycle. The effective defect diffusion length is revealed by the dependence of damage on the active part of the beam duty cycle. Results show that the defect relaxation behavior obeys a second order kinetic process for all the cases studied, with a time constant in the range of ∼4–13 ms and a diffusion length of ∼15–50 nm. Both radiation dynamics parameters (the time constant and diffusion length) are essentially independent of the maximum instantaneous dose rate, total ion dose, and dopant concentration within the ranges studied. However, both the time constant and diffusion length increase with increasing ion mass. This demonstrates that the density of collision cascades influences not only defect production and annealing efficiencies but also the defect interaction dynamics.

  8. Workshop Agenda

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

    Agenda Workshop Agenda Large Scale Computing and Storage Requirements for Biological and Environmental Research May 7-8, 2009 Location: Hilton Washington DC/Rockville Executive Meeting Center. 1750 Rockville Pike, Rockville, Maryland, 20852 Thursday, May 7 8:00 am - Arrive, informal discussions 8:30 am - Welcome, introductions, workshop goals, charge to committee (Yukiko Sekine, DOE-SC/ASCR) 8:45 am - Workshop outline, logistics, format, procedures (Harvey Wasserman, NERSC) 9:00 am - BER Program

  9. Workshop Logistics

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

    Logistics Workshop Logistics Large Scale Computing and Storage Requirements for Fusion Energy Sciences An FES / ASCR / NERSC Workshop August 3-4, 2010 Goals This workshop is being organized by the Department of Energy's Office of Fusion Energy Sciences and Office of Advanced Scientific Computing Research (ASCR) to elucidate computing requirements for fusion energy sciences research at NERSC. These requirements will serve as input to the NERSC planning processes for systems and support, and will

  10. Workshop Presentations

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

    Presentations Workshop Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) Workshop Goals/Overview November 12, 2009 | Author(s): Yukiko Sekine | Workshop Logistics November 12, 2009 | Author(s): Harvey Wasserman | DOE HEP Overview November 12, 2009 | Author(s): Amber Boehnlein | NERSC Role in High Energy Physics Research November 12, 2009 | Author(s): Kathy Yelick | Community Petascale Project for Accelerator Science and Simulation (ComPASS) November 12, 2009 | Author(s):

  11. 2013 Workshops

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

    Workshops banner Home Agenda Awards Exhibitors Lodging Posters Registration T-Shirt Contest Transportation Workshops Contact Us User Meeting Archives Users' Executive Committee 2013 ALS User Meeting Workshops Advances in Infrared Spectroscopy and Imaging: Broadband Vibrational Nanospectroscopy and Spectro-Microtomography Michael Martin, Hans Bechtel (ALS-LBNL), Carol Hirschmugl (Univ. of Wisconsin, Milwaukee), and Markus Raschke (Univ. of Colorado, Boulder) Location: 80-234 Advanced Tomographic

  12. 2015 Workshop

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

    SAXS Workshop at CAMD Thursday, April 23rd, 2015 LSU Center for Advanced Microstructures and Devices, 6980 Jefferson Highway, Baton Rouge, LA A small angle X-ray scattering (SAXS) workshop will be held at the J. Bennett Johnston, Sr., Center for Advanced Microstructures and Devices (CAMD) on April 23, 2015, the day before the Users Meeting. The workshop will be led by Dr. Jan Illavsky from the X-ray operations division of the Argonne National Laboratory, Argonne, Illinois. Data of different

  13. HPC Workshops

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

    HPCOR Watson Workshop July 2009: HPSS in the Extreme Scale Era May 2007: Petascale Systems Integration Sept 2008: Risk Management Sept 2009: Software Lifecycles Sept 2010: Power Management Sept 2011: File Systems and Archives CS Seminars Calendar Move to CRT Home » Events » HPC Workshops HPC Workshops NERSC Operational Assessment Review Logistics and Agenda for NERSC Operational Review Read More » All logos DOE High Performance Computing Operational Review (HPCOR) Enabling Data-Driven

  14. Second user workshop on high-power lasers at the Linac Coherent Light Source

    SciTech Connect (OSTI)

    Heimann, Phil; Glenzer, Siegfried

    2015-05-28

    The second international workshop on the physics enabled by the unique combination of high-power lasers with the world-class Linac Coherent Light Source (LCLS) free-electron X-ray laser beam was held in Stanford, CA, on October 7–8, 2014. The workshop was co-organized by UC Berkeley, Lawrence Berkeley, Lawrence Livermore, and SLAC National Accelerator Laboratories. More than 120 scientists, including 40 students and postdoctoral scientists who are working in high-intensity laser-matter interactions, fusion research, and dynamic high-pressure science came together from North America, Europe, and Asia. The focus of the second workshop was on scientific highlights and the lessons learned from 16 new experiments that were performed on the Matter in Extreme Conditions (MEC) instrument since the first workshop was held one year ago.

  15. Second user workshop on high-power lasers at the Linac Coherent Light Source

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Heimann, Phil; Glenzer, Siegfried

    2015-05-28

    The second international workshop on the physics enabled by the unique combination of high-power lasers with the world-class Linac Coherent Light Source (LCLS) free-electron X-ray laser beam was held in Stanford, CA, on October 7–8, 2014. The workshop was co-organized by UC Berkeley, Lawrence Berkeley, Lawrence Livermore, and SLAC National Accelerator Laboratories. More than 120 scientists, including 40 students and postdoctoral scientists who are working in high-intensity laser-matter interactions, fusion research, and dynamic high-pressure science came together from North America, Europe, and Asia. The focus of the second workshop was on scientific highlights and the lessons learned from 16 newmore » experiments that were performed on the Matter in Extreme Conditions (MEC) instrument since the first workshop was held one year ago.« less

  16. Summary report of working group 5: Beam and radiation generation, monitoring, and control

    SciTech Connect (OSTI)

    Church, Mike; Kim, Ki-Yong; /Maryland U.

    2010-01-01

    This paper summarizes the activities and presentations of Working Group 5 of the Advanced Accelerator Concepts Workshop held at Annapolis, Maryland in June 2010. Working Group 5 touched on a broad range of topics in the fields of beam and radiation generation and their monitoring and control. These topics were not comprehensively covered in this Workshop, but rather the Working Group concentrated on specific new developments and recent investigations. The Working Group divided its sessions into four broad categories: cathodes and electron guns, radiation generation, beam diagnostics, and beam control and dynamics. This summary is divided into the same structure.

  17. Transmission Workshop

    Broader source: Energy.gov [DOE]

    On November 1-2, 2012, the GTT presented a workshop on grid integration on the transmission system at the DoubleTree Crystal City near Washington, DC.

  18. Workshop Logistics

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

    This workshop is being organized by the Department of Energy's Office of Fusion Energy Sciences and Office of Advanced Scientific Computing Research (ASCR) to elucidate computing ...

  19. Workshop Logistics

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

    This workshop is being organized by the Department of Energy's Office of Basic Energy Sciences and Office of Advanced Scientific Computing Research (ASCR) to elucidate computing ...

  20. Workshop Agenda

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

    Workshop outline, logistics, format, procedures Harvey Wasserman, NERSC 9:00 FES Program ... Case Study: Plasma Turbulence & Transport C. S. Chang 12:00 Case Study: MHD Stephen ...

  1. Workshop Agenda

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

    (Yukiko Sekine, DOE-SCASCR) 8:45 am - Workshop outline, logistics, format, procedures (Harvey Wasserman, NERSC) 9:00 am - BER Program Office Research Directions (David...

  2. Workshop Agenda

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

    Agenda Workshop Agenda Large Scale Computing and Storage Requirements for Basic Energy Sciences A BES / ASCR / NERSC Workshop February 9-10, 2010 >> Download and View these Presentations. The day-and-a-half workshop will be held all day Tuesday, February 9 and on the morning of Wednesday, February 10, 2010. Due to weather conditions in the Washington, D.C. area, the workshop was held as a teleconference/web conference. Hilton Washington DC/Rockville Executive Meeting Center 1750 Rockville

  3. Distribution Workshop

    Broader source: Energy.gov [DOE]

    On September 24-26, 2012, the GTT presented a workshop on grid integration on the distribution system at the Sheraton Crystal City near Washington, DC.

  4. Sustainable manufacturing Workshop: Workshop Summary Report

    Energy Savers [EERE]

    AMO Workshop on Sustainable Manufacturing i | P a g e Table of Contents 1. Workshop ......... 6 Sustainable Manufacturing Technology Assessment ...

  5. ESPC Workshop

    Broader source: Energy.gov [DOE]

    This three-day workshop educates attendees on how to implement energy and water projects through an energy savings performance contract (ESPC). The workshop consists of a basic introduction to the U.S. Department of Energy (DOE) IDIQ contracts and how to get started with an ESPC project at your site.

  6. H Workshop

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

    ... Social Twitter Google + Vimeo GovDelivery SlideShare H Workshop HomeEnergy ResearchFusion Energy SciencesH Workshop - H Workshopadmin2015-04-29T14:54:39+00:00 For the 10th in ...

  7. TRACING ELECTRON BEAMS IN THE SUN'S CORONA WITH RADIO DYNAMIC IMAGING SPECTROSCOPY

    SciTech Connect (OSTI)

    Chen Bin; Bastian, T. S.; White, S. M.; Gary, D. E.; Perley, R.; Rupen, M.; Carlson, B.

    2013-01-20

    We report observations of type III radio bursts at decimeter wavelengths (type IIIdm bursts)-signatures of suprathermal electron beams propagating in the low corona-using the new technique of radio dynamic imaging spectroscopy provided by the recently upgraded Karl G. Jansky Very Large Array. For the first time, type IIIdm bursts were imaged with high time and frequency resolution over a broad frequency band, allowing electron beam trajectories in the corona to be deduced. Together with simultaneous hard X-ray and extreme ultraviolet observations, we show that these beams emanate from an energy release site located in the low corona at a height below {approx}15 Mm, and propagate along a bundle of discrete magnetic loops upward into the corona. Our observations enable direct measurements of the plasma density along the magnetic loops, and allow us to constrain the diameter of these loops to be less than 100 km. These overdense and ultra-thin loops reveal the fundamentally fibrous structure of the Sun's corona. The impulsive nature of the electron beams, their accessibility to different magnetic field lines, and the detailed structure of the magnetic release site revealed by the radio observations indicate that the localized energy release is highly fragmentary in time and space, supporting a bursty reconnection model that involves secondary magnetic structures for magnetic energy release and particle acceleration.

  8. Synchronous digitization for high dynamic range lock-in amplification in beam-scanning microscopy

    SciTech Connect (OSTI)

    Muir, Ryan D.; Sullivan, Shane Z.; Oglesbee, Robert A.; Simpson, Garth J.

    2014-03-15

    Digital lock-in amplification (LIA) with synchronous digitization (SD) is shown to provide significant signal to noise (S/N) and linear dynamic range advantages in beam-scanning microscopy measurements using pulsed laser sources. Direct comparisons between SD-LIA and conventional LIA in homodyne second harmonic generation measurements resulted in S/N enhancements consistent with theoretical models. SD-LIA provided notably larger S/N enhancements in the limit of low light intensities, through the smooth transition between photon counting and signal averaging developed in previous work. Rapid beam scanning instrumentation with up to video rate acquisition speeds minimized photo-induced sample damage. The corresponding increased allowance for higher laser power without sample damage is advantageous for increasing the observed signal content.

  9. Workshop Reports | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    Since then, community input workshops and a Request For Information (RFI) have been held for potential stewardship topics in: Ion Beam Therapy, Laser Technology for Accelerators, ...

  10. Three-dimensional ordering of cold ion beams in a storage ring: A molecular-dynamics simulation study

    SciTech Connect (OSTI)

    Yuri, Yosuke

    2015-06-29

    Three-dimensional (3D) ordering of a charged-particle beams circulating in a storage ring is systematically studied with a molecular-dynamics simulation code. An ion beam can exhibit a 3D ordered configuration at ultralow temperature as a result of powerful 3D laser cooling. Various unique characteristics of the ordered beams, different from those of crystalline beams, are revealed in detail, such as the single-particle motion in the transverse and longitudinal directions, and the dependence of the tune depression and the Coulomb coupling constant on the operating points.

  11. Workshop: Materials for Harsh Service Conditions Workshop Agenda...

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

    Workshop: Materials for Harsh Service Conditions Workshop Agenda Workshop: Materials for Harsh Service Conditions Workshop Agenda Harsh Materials Workshop -Agenda (UPDATED).pdf ...

  12. Workshop on algorithms for macromolecular modeling. Final project report, June 1, 1994--May 31, 1995

    SciTech Connect (OSTI)

    Leimkuhler, B.; Hermans, J.; Skeel, R.D.

    1995-07-01

    A workshop was held on algorithms and parallel implementations for macromolecular dynamics, protein folding, and structural refinement. This document contains abstracts and brief reports from that workshop.

  13. Experimental investigation of the longitudinal beam dynamics in a photoinjector using a two-macroparticle bunch

    SciTech Connect (OSTI)

    Piot, P.; Tikhoplav, R.; Mihalcea, D.; Barov, N.; /Northern Illinois U.

    2006-03-01

    We have developed a two-macroparticle bunch to explore the longitudinal beam dynamics through various components of the Fermilab/NICADD photoinjector. Such a two-macroparticle bunch is generated by splitting the ultraviolet pulse from the photocathode drive laser. The presented method allows the exploration of radiofrequency-induced compression in the 1.625 cell rf-gun and the booster cavity. It also allows a direct measurement of the momentum compaction of the magnetic bunch compressor. The measurements are compared with analytical and numerical models.

  14. Workshop Presentations

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

    Presentations Workshop Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) Workshop Goals/Overview May 7, 2009 | Author(s): Yukiko Sekine | Workshop Logistics May 7, 2009 | Author(s): Harvey Wasserman | BER Overview May 7, 2009 | Author(s): David Thomassen | NERSC Overview May 7, 2009 | Author(s): Kathy Yelick | CCSM and Earth System Model May 7, 2009 | Author(s): Lawrence Buja, John Drake, Michael Wehner | Role of Climate System Noise in Climate Simulations May 7, 2009 |

  15. Effect of Field Errors in Muon Collider IR Magnets on Beam Dynamics

    SciTech Connect (OSTI)

    Alexahin, Y.; Gianfelice-Wendt, E.; Kapin, V.V.; /Fermilab

    2012-05-01

    In order to achieve peak luminosity of a Muon Collider (MC) in the 10{sup 35} cm{sup -2}s{sup -1} range very small values of beta-function at the interaction point (IP) are necessary ({beta}* {le} 1 cm) while the distance from IP to the first quadrupole can not be made shorter than {approx}6 m as dictated by the necessity of detector protection from backgrounds. In the result the beta-function at the final focus quadrupoles can reach 100 km making beam dynamics very sensitive to all kind of errors. In the present report we consider the effects on momentum acceptance and dynamic aperture of multipole field errors in the body of IR dipoles as well as of fringe-fields in both dipoles and quadrupoles in the ase of 1.5 TeV (c.o.m.) MC. Analysis shows these effects to be strong but correctable with dedicated multipole correctors.

  16. Workshop Presentations

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

    May 7, 2009 | Author(s): Yukiko Sekine | Workshop Logistics May 7, 2009 | Author(s): Harvey Wasserman | BER Overview May 7, 2009 | Author(s): David Thomassen | NERSC Overview...

  17. Workshop Contacts

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

    803-208-3389 Los Alamos National Laboratory- Workshop Chair Lloyd Gordon 505-667-0778 National Renewable Energy Laboratory- EFCOG ESSG Vice-Chair Heath Garrison 303-384-7408...

  18. Workshop Presentations

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

    Case Study: Math Software January 6, 2011 | Author(s): Esmond Ng, Osni Marques | NERSC Initial Summary January 6, 2011 | Author(s): Richard Gerber | Case study format review, preparation instructions; Report schedule January 6, 2011 | Author(s): Harvey Wasserman | Welcome, introductions, workshop goals, charge to committee January 5, 2011 | Author(s): Yukiko Sekine | Workshop outline, logistics, format January 5, 2011 | Author(s): Harvey Wasserman | ASCR Program Office Research Directions

  19. Workshop Agenda

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

    Agenda Workshop Agenda Large Scale Computing and Storage Requirements for Nuclear Physics May 26-27, 2011 Chesapeak Suites Wireless Network: Hyatt Bethesda Meeting Room Meeting Room: Embassy Group Name: NERSC Passcode: As given in handout at meeting Hyatt Regency Bethesda One Bethesda Metro Center (7400 Wisconsin Ave) Bethesda, Maryland, USA 20814 Thursday, May 26 Time Topic Presenter 8:00 Arrive, informal discussions 8:30 Welcome, introductions, workshop goals, charge to committee Yukiko

  20. Workshop Logistics

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

    Logistics Workshop Logistics Large Scale Computing and Storage Requirements for Advanced Scientific Computing Research January 5-6, 2011 Location The workshop will be held at NERSC's Oakland Scientific Facility (OSF) 415 20th Street (415 Thomas L. Berkeley Way) Oakland CA, 94612 No free parking is available at NERSC. You are urged to take BART to NERSC, since the nearest station (19th Street) is directly across the street from our facility. A map showing locations of nearby parking facilities is

  1. Workshop Logistics

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

    Logistics Workshop Logistics Goals This workshop is being organized by the Department of Energy's Office of Basic Energy Sciences and Office of Advanced Scientific Computing Research (ASCR) to elucidate computing requirements for high energy physics research at NERSC. These requirements will serve as input to the NERSC planning processes for systems and support, and will help ensure that NERSC continues to provide world-class support for scientific discovery to DOE scientists and their

  2. 2012 User Meeting Workshops

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

    Workshops Print 2012 ALS User Meeting Workshops Home Agenda Awards Exhibitors Lodging Posters Registration Transportation Workshops This e-mail address is being protected from...

  3. Simulative research on the anode plasma dynamics in the high-power electron beam diode

    SciTech Connect (OSTI)

    Cai, Dan; Liu, Lie; Ju, Jin-Chuan; Zhang, Tian-Yang; Zhao, Xue-Long; Zhou, Hong-Yu

    2015-07-15

    Anode plasma generated by electron beams could limit the electrical pulse-length, modify the impedance and stability of diode, and affect the generator to diode power coupling. In this paper, a particle-in-cell code is used to study the dynamics of anode plasma in the high-power electron beam diode. The effect of gas type, dynamic characteristic of ions on the diode operation with bipolar flow model are presented. With anode plasma appearing, the amplitude of diode current is increased due to charge neutralizations of electron flow. The lever of neutralization can be expressed using saturation factor. At same pressure of the anode gas layer, the saturation factor of CO{sub 2} is bigger than the H{sub 2}O vapor, namely, the generation rate of C{sup +} ions is larger than the H{sup +} ions at the same pressure. The transition time of ions in the anode-cathode gap could be used to estimate the time of diode current maximum.

  4. High Resolution Simulation of Beam Dynamics in Electron Linacs for Free Electron Lasers

    SciTech Connect (OSTI)

    Ryne, R.D.; Venturini, M.; Zholents, A.A.; Qiang, J.

    2009-01-05

    In this paper we report on large scale multi-physics simulation of beam dynamics in electron linacs for next generation free electron lasers (FELs). We describe key features of a parallel macroparticle simulation code including three-dimensional (3D) space-charge effects, short-range structure wake fields, longitudinal coherent synchrotron radiation (CSR) wake fields, and treatment of radiofrequency (RF) accelerating cavities using maps obtained from axial field profiles. A macroparticle up-sampling scheme is described that reduces the shot noise from an initial distribution with a smaller number of macroparticles while maintaining the global properties of the original distribution. We present a study of the microbunching instability which is a critical issue for future FELs due to its impact on beam quality at the end of the linac. Using parameters of a planned FEL linac at Lawrence Berkeley National Laboratory (LBNL), we show that a large number of macroparticles (beyond 100 million) is needed to control numerical shot noise that drives the microbunching instability. We also explore the effect of the longitudinal grid on simulation results. We show that acceptable results are obtained with around 2048 longitudinal grid points, and we discuss this in view of the spectral growth rate predicted from linear theory. As an application, we present results from simulations using one billion macroparticles of the FEL linac under design at LBNL. We show that the final uncorrelated energy spread of the beam depends not only on the initial uncorrelated energy spread but also depends strongly on the shape of the initial current profile. By using a parabolic initial current profile, 5 keV initial uncorrelated energy spread at 40 MeV injection energy, and improved linac design, those simulations demonstrate that a reasonable beam quality can be achieved at the end of the linac, with the final distribution having about 100 keV energy spread, 2.4 GeV energy, and 1.2 kA peak

  5. Training & Workshops

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

    TraccTraining1 735w TRACC RESEARCH Computational Fluid Dynamics Computational Structural Mechanics Transportation Systems Modeling Training Courses and Workshops at TRACC TRACC offers expanded outreach, training, collaboration, visualization, and technology enablement to users, collaborators, and USDOT partners. TRACC resources can enrich the meeting experience for all participants. Events (meetings, conferences and training sessions) that benefit from sharing both video/audio and data among

  6. Dynamics of CN+alkane reactions by crossed-beam dc slice imaging

    SciTech Connect (OSTI)

    Huang Cunshun; Li Wen; Estillore, Armando D.; Suits, Arthur G.

    2008-08-21

    The hydrogen atom abstraction reactions of CN (X {sup 2}{sigma}{sup +}) with alkanes have been studied using the crossed molecular beam technique with dc slice ion imaging at collision energies of 7.5 and 10.8 kcal/mol. The product alkyl radical images were obtained via single photon ionization at 157 nm for the reactions of CN (X {sup 2}{sigma}{sup +}) with n-butane, n-pentane, n-hexane, and cyclohexane. From analysis of the images, we obtained the center-of-mass frame product angular distributions and translational energy distributions directly. The results indicate that the products are largely backscattered and that most of the available energy ({approx}80%-85%) goes to the internal energy of the products. The reaction dynamics is discussed in light of recent kinetics data, theoretical calculations, and results for related halogen and oxygen atom reactions.

  7. A Multimedia Tutorial for Charged-Particle Beam Dynamics. Final report

    SciTech Connect (OSTI)

    Silbar, Richard R.

    1999-07-26

    In September 1995 WhistleSoft, Inc., began developing a computer-based multimedia tutorial for charged-particle beam dynamics under Phase II of a Small Business Innovative Research grant from the U.S. Department of Energy. In Phase I of this project (see its Final Report) we had developed several prototype multimedia modules using an authoring system on NeXTStep computers. Such a platform was never our intended target, and when we began Phase II we decided to make the change immediately to develop our tutorial modules for the Windows and Macintosh microcomputer market. This Report details our progress and accomplishments. It also gives a flavor of the look and feel of the presently available and upcoming modules.

  8. SAXS Workshop

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

    pople_title.jpg (17023 bytes) A workshop to be held at the Stanford Synchrotron Radiation Laboratory In conjunction with the 26th Annual Users' Conference Date: Tuesday October 12, 1999 Time: 1:30 - 5:00PM This workshop is designed as a series of relatively informal lectures in which users in the small-angle X-ray scattering (SAXS) community will share their experience in their particular application of SAXS techniques. Fields which will be reviewed include materials science applications: where

  9. Electron beam dynamics in the long-pulse, high-current DARHT-II linear induction accelerator

    SciTech Connect (OSTI)

    Ekdahl, Carl A; Abeyta, Epifanio O; Aragon, Paul; Archuleta, Rita; Cook, Gerald; Dalmas, Dale; Esquibel, Kevin; Gallegos, Robert A; Garnett, Robert; Harrison, James F; Johnson, Jeffrey B; Jacquez, Edward B; Mccuistian, Brian T; Montoya, Nicholas A; Nath, Subrato; Nielsen, Kurt; Oro, David; Prichard, Benjamin; Rowton, Lawrence; Sanchez, Manolito; Scarpetti, Raymond; Schauer, Martin M; Seitz, Gerald; Schulze, Martin; Bender, Howard A; Broste, William B; Carlson, Carl A; Frayer, Daniel K; Johnson, Douglas E; Tom, C Y; Williams, John; Hughes, Thomas; Anaya, Richard; Caporaso, George; Chambers, Frank; Chen, Yu - Jiuan; Falabella, Steve; Guethlein, Gary; Raymond, Brett; Richardson, Roger; Trainham, C; Weir, John; Genoni, Thomas; Toma, Carsten

    2009-01-01

    The DARHT-II linear induction accelerator (LIA) now accelerates 2-kA electron beams to more than 17 MeV. This LIA is unique in that the accelerated current pulse width is greater than 2 microseconds. This pulse has a flat-top region where the final electron kinetic energy varies by less than 1% for more than 1.5 microseconds. The long risetime of the 6-cell injector current pulse is 0.5 {micro}s, which can be scraped off in a beam-head cleanup zone before entering the 68-cell main accelerator. We discuss our experience with tuning this novel accelerator; and present data for the resulting beam transport and dynamics. We also present beam stability data, and relate these to previous stability experiments at lower current and energy.

  10. PKI Workshop | Department of Energy

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

    PKI Workshop PKI Workshop PKI Workshop.pdf (174.14 KB) More Documents & Publications ICAM Workshop Radio and Spectrum Management Ad Hoc Meetings

  11. ICAM Workshop | Department of Energy

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

    ICAM Workshop ICAM Workshop DOE ICAM Workshop 4_3.pdf (51.15 KB) More Documents & Publications Radio and Spectrum Management Ad Hoc Meetings PKI Workshop

  12. Workshops | Department of Energy

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

    Workshops Workshops The U.S. Department of Energy Office of Indian Energy offers regional interactive workshops designed to provide tribal leaders and their staff members with the information and guidance needed to navigate the complexities of developing and implementing energy projects. Upcoming Workshops Date Workshop Location 7/19-20 Tribal Energy Economic Impact Tools Training Portland, Oregon Past Workshops Date Workshop Location 06/07/2016 System Advisor Model Training Flagstaff, Arizona

  13. Dynamical dipole mode in fusion reactions at 16 MeV/nucleon and beam energy dependence

    SciTech Connect (OSTI)

    Pierroutsakou, D.; Boiano, A.; Romoli, M.; Martin, B.; Inglima, G.; Commara, M. La; Parascandolo, C.; Sandoli, M.; Agodi, C.; Alba, R.; Colonna, M.; Coniglione, R.; Zoppo, A. Del; Maiolino, C.; Piattelli, P.; Santonocito, D.; Sapienza, P.; Baran, V.; Cardella, G.; Filippo, E. De

    2009-08-15

    High-energy {gamma} rays and light charged particles from the {sup 36}Ar+{sup 96}Zr and {sup 40}Ar+{sup 92}Zr reactions at E{sub lab}=16 and 15.1 MeV/nucleon, respectively, were measured in coincidence with evaporation residues by means of the MEDEA multidetector array coupled to four parallel plate avalanche counters. The aim of this experiment was to investigate the prompt {gamma} radiation, emitted in the decay of the dynamical dipole mode, in the {approx}16 MeV/nucleon energy range and to map its beam energy dependence, comparing the present results with our previous ones obtained at lower energies. The studied reactions populate, through entrance channels having different charge asymmetries, a compound nucleus in the region of Ce under the same conditions of excitation energy and spin. Light charged particle energy spectra were used to pin down the average excitation energy and the average mass of the system. By studying the {gamma}-ray spectra of the charge symmetric reaction {sup 40}Ar+{sup 92}Zr, the statistical giant dipole resonance (GDR) parameters and angular distribution were extracted, and a comparison of the linearized 90 deg. {gamma}-ray spectra of the two reactions revealed a 12% extra yield in the GDR energy region for the more charge asymmetric system. The center-of-mass angular distribution data of this extra {gamma} yield, compatible with a dipole oscillating along the symmetry axis of the dinuclear system, support its dynamical nature. The experimental findings are compared with theoretical predictions performed within a Boltzmann-Nordheim-Vlasov transport model and based on a collective bremsstrahlung analysis of the entrance channel reaction dynamics. An interesting sensitivity to the symmetry term of the equation of state and to in-medium effects on nucleon-nucleon (nn) cross sections is finally discussed.

  14. Chirped-pulse manipulated carrier dynamics in low-temperature molecular-beam-epitaxy grown GaAs

    SciTech Connect (OSTI)

    Lee, Chao-Kuei; Lin, Yuan-Yao; Lin, Sung-Hui; Lin, Gong-Ru; Pan, Ci-Ling

    2014-04-28

    Chirped pulse controlled carrier dynamics in low-temperature molecular-beam-epitaxy grown GaAs are investigated by degenerate pump-probe technique. Varying the chirped condition of excited pulse from negative to positive increases the carrier relaxation time so as to modify the dispersion and reshape current pulse in time domain. The spectral dependence of carrier dynamics is analytically derived and explained by Shockley-Read Hall model. This observation enables the new feasibility of controlling carrier dynamics in ultrafast optical devices via the chirped pulse excitations.

  15. Previous Workshops

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

    Reviews Science Engagement Move your data Programs & Workshops Science Requirements Reviews Network Requirements Reviews Documents and Background Materials FAQ for Case Study Authors BER Requirements Review 2015 ASCR Requirements Review 2015 Previous Reviews HEP/NP Requirements Review 2013 FES Requirements Review 2014 BES Requirements Review 2014 Requirements Review Reports Case Studies Contact Us Technical Assistance: 1 800-33-ESnet (Inside US) 1 800-333-7638 (Inside US) 1 510-486-7600

  16. Workshop Presentations

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

    Agenda Presentations Logistics Reference Materials Participants Organizing Committee Case Study Worksheets High Energy Physics (HEP) Nuclear Physics (NP) Overview Published Reports Case Study FAQs NERSC HPC Achievement Awards Share Your Research User Submitted Research Citations NERSC Citations Home » Science at NERSC » HPC Requirements Reviews » Requirements Reviews: Target 2014 » Fusion Energy Sciences (FES) » Presentations Workshop Presentations Large Scale Computing and Storage

  17. Workshop Presentations

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

    High Energy Physics (HEP) Agenda Presentations Reference Materials Participants Organizing Committee Nuclear Physics (NP) Overview Published Reports Case Study FAQs NERSC HPC Achievement Awards Share Your Research User Submitted Research Citations NERSC Citations Home » Science at NERSC » HPC Requirements Reviews » Requirements Reviews: Target 2014 » High Energy Physics (HEP) » Presentations Workshop Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) Advanced

  18. Workshop Presentations

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

    Agenda Presentations Logistics Reference Materials Participants Organizing Committee Biological and Environmental Science (BER) Fusion Energy Sciences (FES) High Energy Physics (HEP) Nuclear Physics (NP) Overview Published Reports Case Study FAQs NERSC HPC Achievement Awards Share Your Research User Submitted Research Citations NERSC Citations Home » Science at NERSC » HPC Requirements Reviews » Requirements Reviews: Target 2014 » Basic Energy Sciences (BES) » Presentations Workshop

  19. Some Beam Dynamics and Related Studies of Possible Changes to the ILC Baseline Design

    SciTech Connect (OSTI)

    Paterson, Ewan; /SLAC

    2012-04-03

    Since the completion of the ILC Reference Design Report (RDR) in 2007, global R and D has continued on all ILC systems in a coordinated program titled Technical Design Phase 1. This program, which is planned and coordinated by the Program Managers and the Technical Area Group Leaders, will transition to a Phase 2 in 2010 which has the goal of producing a more complete Technical Design Report in 2012. In this transition there will be a re-baseline process which will update and or modify the RDR baseline design taking into account progress with systems design and progress with various technologies coming from the continuing R and D programs. The RDR design was considered by some to be a conservative one and many of the topics being studied for inclusion in a new baseline are directed towards more optimum cost versus risk designs. Some of these are engineering systems design modifications, both technical and civil, while others are accelerator parameters, technical system designs and beam dynamics optimizations. A few of the latter are described here.

  20. HPC Workshop Reports

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

    HPC Workshop Reports HPC Workshop Reports Sort by: Default | Name | Date (low-high) | Date (high-low) | Source | Category Petascale Systems Integration into Large Scale Facilities Workshop August 31, 2007 | URL: https://outreach.scidac.gov/pibp/ Download File: PetascaleFinalDraft.doc | doc | 216 KB This workshop was the first given in the HPC Best Practices Workshop Series. Held in San Francisco, May 15-16 2007, the workshop looked at the challenges and opportunities that come with Petascale

  1. Programs & Workshops

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

    CrossConnects Workshop Series Operating Innovative Networks Workshop Series Enlighten Your Research Global Program Science Requirements Reviews Case Studies News & Publications ESnet News Publications and Presentations Galleries ESnet Awards and Honors Blog ESnet Live Home » Science Engagement » Programs & Workshops Science Engagement Move your data Programs & Workshops CrossConnects Workshop Series Operating Innovative Networks Workshop Series Enlighten Your Research Global

  2. Creating Fantastic PI Workshops

    SciTech Connect (OSTI)

    Biedermann, Laura B.; Clark, Blythe G.; Colbert, Rachel S.; Dagel, Amber Lynn; Gupta, Vipin P.; Hibbs, Michael R.; Perkins, David Nikolaus; West, Roger Derek

    2015-10-01

    The goal of this SAND report is to provide guidance for other groups hosting workshops and peerto-peer learning events at Sandia. Thus this SAND report provides detail about our team structure, how we brainstormed workshop topics and developed the workshop structure. A Workshop “Nuts and Bolts” section provides our timeline and check-list for workshop activities. The survey section provides examples of the questions we asked and how we adapted the workshop in response to the feedback.

  3. 2012 Microgrid Workshop Report

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

    2 DOE Microgrid Workshop July 30-31, 2012 Chicago, Illinois 2012 DOE Microgrid Workshop Report Page i Acknowledgment The U.S. Department of Energy (DOE) would like to acknowledge the support provided by the organizations represented on the workshop planning committee in developing the workshop process and sessions. The preparation of this workshop report was coordinated by Energy & Environmental Resources Group, LLC (E2RG). The report content is based on the workshop session discussions,

  4. Meetings and Workshops

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

    Exchange Program Surplus Power Sales Reports Meetings and Workshops January 21, 2016 Generation Inputs Workshop Location, time and call-in information Materials to be posted...

  5. NEET Workshop 2010

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Nuclear Energy Enabling Technologies Workshop Report was held in Rockville, MD on July 29, 2010. DOE’s primary purposes in convening the NEET workshop were to:

  6. 2011 User Meeting Workshops

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

    Workshops Print Home Agenda Awards Exhibitors Lodging Posters Registration Photo Contest Transportation Workshops This e-mail address is being protected from spambots. You need...

  7. AFC Workshop

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

    * * Go to "View | Header and Footer" to add your organization, sponsor, meeting name here; then, click "Apply to All" * * Go to "View | Header and Footer" to add your organization, sponsor, meeting name here; then, click "Apply to All" * Digital Gammasphere ATLAS Users Workshop Argonne National Laboratory May 15, 2014 Michael P. Carpenter Cast of Characters: M. Albers, A. M. Alcorta, J. Anderson, A. Ayangeakaa, P. Camboulives, M.P. Carpenter, C. Chiara, H.

  8. Critical Materials Workshop

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentations during the Critical Materials Workshop held on April 3, 2012 overviewing critical materials strategies

  9. Workshops and Awards | Department of Energy

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

    Workshops 2015 DOE Acquisition and Project Management Workshop 2014 DOE Project Management Workshop 2012 DOE Project Management Workshop 2011 DOE Project Management Workshop Awards...

  10. HPC Workshop Reports

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

    The 4th Workshop on HPC Best Practices: Power Management September 29, 2010 | URL: https://outreach.scidac.gov/pmbp/ Download File: PMBPreport110322.pdf | pdf | 520 KB This, the fourth workshop in the HPC Best Practices Workshop Series, was held September 28-29, 2010, in San Francisco. This workshop addressed the current practices and issues related to controlling and reducing power required by facilities and systems. An important question that this workshop explored was whether the power

  11. Diagnostic Neutral Beam Injector for Active Plasma Spectroscopy at Gas-Dynamic Trap

    SciTech Connect (OSTI)

    Korepanov, S.A.; Deichuli, P.O.; Ivanov, A.A.; Mishagin, V.V.

    2005-01-15

    A diagnostic beam system has been developed for the GDT. This injector is the modification of the diagnostic injector RFX-DNBI. The system is primarily used for magnetic field measurements via motional Stark effect (MSE). The ion source provides 50keV, 5A hydrogen beam. Ions are extracted from a plasma created by an arc-discharge source and, after accelerating and focusing, are neutralized in a gas target. A plasma emitter, which is formed by collisionless expansion of a plasma jet on to the grids, has low perpendicular ion temperature. These results in rather low (0.01 rad) angular divergence of the extracted ion beam. In the accelerator, there is a set of four nested grids with 421 circular apertures of 4 mm diameter configured in a hexagonal pattern. The geometry of the elementary cell was optimized by using 2D computer code PBGUNS to obtain small angular divergence of the beam. The grids of ion optical system are spherically curved providing geometric focusing of the beam at a distance 1.5 m. Arc-discharge plasma box provides highly ionized plasma, so that the extracted beam has about 90% of full energy specie. The injector provides up to 4 ms duration pulse.

  12. Instrumentation and Beam Dynamics Study of Advanced Electron-Photon Facility in Indiana University

    SciTech Connect (OSTI)

    Luo, Tianhuan; /Indiana U.

    2011-08-01

    The Advanced eLectron-PHoton fAcility (ALPHA) is a compact electron accelerator under construction and being commissioned at the Indiana University Center for Exploration of Energy and Matter (CEEM). In this thesis, we have studied the refurbished Cooler Injector Synchrotron (CIS) RF cavity using both the transmission line model and SUPERFISH simulation. Both low power and high power RF measurements have been carried out to characterize the cavity. Considering the performance limit of ferrite, we have designed a new ferrite loaded, co-axial quarter wave like cavity with similar structure but a more suitable ferrite material. We have also designed a traveling wave stripline kicker for fast extraction by POISSON and Microwave Studio. The strips geometry is trimmed to maximize the uniformity of the kicking field and match the impedance of the power cables. The time response simulation shows the kicker is fast enough for machine operation. The pulsed power supply requirement has also been specified. For the beam diagnosis in the longitudinal direction, we use a wideband Wall Gap Monitor (WGM) served in CIS. With proper shielding and amplification to get good WGM signal, we have characterized the injected and extracted beam signal in single pass commissioning, and also verified the debunching effect of the ALPHA storage ring. A modulation-demodulation signal processing method is developed to measure the current and longitudinal profile of injected beam. By scanning the dipole strength in the injection line, we have reconstructed the tomography of the longitudinal phase space of the LINAC beam. In the accumulation mode, ALPHA will be operated under a low energy and high current condition, where intra beam scattering (IBS) becomes a dominant effect on the beam emittance. A self consistent simulation, including IBS effect, gas scattering and linear coupling, has been carried out to calculate the emittance of the stored beam.

  13. Workshop Presentations

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

    High-Resolution Modeling of the Earth System May 7, 2009 | Author(s): Christopher Kerr | Molecular Dynamics May 7, 2009 | Author(s): Teresa Head-Gordon | Microbial Genome and...

  14. Workshop Presentations

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

    Dynamics Codes and Coupling of Length Scales February 9, 2010 | Author(s): Peter T. Cummings, Normand Modine and Randy Cygan | The Nature of the Mineral-Water Interface: A...

  15. Beam-dynamics driven design of the LHeC energy-recovery linac

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Pellegrini, Dario; Latina, Andrea; Schulte, Daniel; Bogacz, S. Alex

    2015-12-23

    The LHeC study is a possible upgrade of the LHC that aims at delivering an electron beam for collisions with the existing hadronic beams. The current baseline design for the electron facility consists of a multi-pass superconducting energy-recovery linac operating in a continuous wave mode. Here, we summarize the overall layout of such ERL complex located on the LHC site and introduce the most recent developments. We review of the lattice components, presenting their baseline design along with possible alternatives that aims at improving the overall machine performance. The detector bypass has been designed and integrated into the lattice. Trackingmore » simulations allowed us to verify the high current (~150 mA in the linacs) beam operation required for the LHeC to serve as an Higgs Factory. The impact of single and multi-bunch wake-fields, synchrotron radiation and beam-beam effects has been assessed in this paper.« less

  16. Fully 3D Multiple Beam Dynamics Processes Simulation for the Fermilab Tevatron

    SciTech Connect (OSTI)

    Stern, E.; Amundson, J.; Spentzouris, P; Valishev, A.; /Fermilab

    2010-06-01

    The Fermilab Tevatron has been, until 2010, the premier high-energy physics collider in the world. The data collected over the last decade by high-energy physics experiments running at the Tevatron have been analyzed to make important measurements in fundamental areas such as B meson masses and flavor oscillation, searches for the Higgs boson, and supersymmetry. Collecting these data at the limits of detectability has required the Tevatron to operate reliably at high beam intensities to maximize the number of collisions to analyze. This impressive achievement has been assisted by the use of HPC resources and software provided through the SciDAC program. This paper describes the enhancements to the BeamBeam3d code to realistically simulate the Tevatron, the validation of these simulations, and the improvement in equipment reliability and personal safety achieved with the aid of simulations.

  17. Beam Dynamics Studies for the First Muon Linac of the Neutrino Factory

    SciTech Connect (OSTI)

    C. Bontoiu,M. Aslaninejad,J. Pozimski,Alex Bogacz

    2010-05-01

    Within the Neutrino Factory Project the muon acceleration process involves a complex chain of accelerators including a (single-pass) linac, two recirculating linacs and an FFAG. The linac consists of RF cavities and iron shielded solenoids for transverse focusing and has been previously designed relying on idealized field models. However, to predict accurately the transport and acceleration of a high emittance 30 cm wide beam with 10 % energy spread requires detailed knowledge of fringe field distributions. This article presents results of the front-to-end tracking of the muon beam through numerically simulated realistic field distributions for the shielded solenoids and the RF fields. Real and phase space evolution of the beam has been studied along the linac and the results are presented and discussed.

  18. Non-adiabatic ab initio molecular dynamics of supersonic beam epitaxy of silicon carbide at room temperature

    SciTech Connect (OSTI)

    Taioli, Simone; Garberoglio, Giovanni; Simonucci, Stefano; Beccara, Silvio a; Aversa, Lucrezia; Nardi, Marco; Verucchi, Roberto; Iannotta, Salvatore; Dapor, Maurizio; and others

    2013-01-28

    In this work, we investigate the processes leading to the room-temperature growth of silicon carbide thin films by supersonic molecular beam epitaxy technique. We present experimental data showing that the collision of fullerene on a silicon surface induces strong chemical-physical perturbations and, for sufficient velocity, disruption of molecular bonds, and cage breaking with formation of nanostructures with different stoichiometric character. We show that in these out-of-equilibrium conditions, it is necessary to go beyond the standard implementations of density functional theory, as ab initio methods based on the Born-Oppenheimer approximation fail to capture the excited-state dynamics. In particular, we analyse the Si-C{sub 60} collision within the non-adiabatic nuclear dynamics framework, where stochastic hops occur between adiabatic surfaces calculated with time-dependent density functional theory. This theoretical description of the C{sub 60} impact on the Si surface is in good agreement with our experimental findings.

  19. Neutrons for Catalysis: A Workshop on Neutron Scattering Techniques for Studies in Catalysis

    SciTech Connect (OSTI)

    Overbury, Steven {Steve} H; Coates, Leighton; Herwig, Kenneth W; Kidder, Michelle

    2011-10-01

    This report summarizes the Workshop on Neutron Scattering Techniques for Studies in Catalysis, held at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL) on September 16 and 17, 2010. The goal of the Workshop was to bring experts in heterogeneous catalysis and biocatalysis together with neutron scattering experimenters to identify ways to attack new problems, especially Grand Challenge problems in catalysis, using neutron scattering. The Workshop locale was motivated by the neutron capabilities at ORNL, including the High Flux Isotope Reactor (HFIR) and the new and developing instrumentation at the SNS. Approximately 90 researchers met for 1 1/2 days with oral presentations and breakout sessions. Oral presentations were divided into five topical sessions aimed at a discussion of Grand Challenge problems in catalysis, dynamics studies, structure characterization, biocatalysis, and computational methods. Eleven internationally known invited experts spoke in these sessions. The Workshop was intended both to educate catalyst experts about the methods and possibilities of neutron methods and to educate the neutron community about the methods and scientific challenges in catalysis. Above all, it was intended to inspire new research ideas among the attendees. All attendees were asked to participate in one or more of three breakout sessions to share ideas and propose new experiments that could be performed using the ORNL neutron facilities. The Workshop was expected to lead to proposals for beam time at either the HFIR or the SNS; therefore, it was expected that each breakout session would identify a few experiments or proof-of-principle experiments and a leader who would pursue a proposal after the Workshop. Also, a refereed review article will be submitted to a prominent journal to present research and ideas illustrating the benefits and possibilities of neutron methods for catalysis research.

  20. Sandia Energy Workshops

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

    4th PV Performance Modeling and Monitoring Workshop in Cologne, Germany, October 22-23, 2015 http:energy.sandia.gov4th-pv-performance-modeling-and-monitoring-workshop-in-cologne...

  1. IPHE Infrastructure Workshop Proceedings

    Fuel Cell Technologies Publication and Product Library (EERE)

    This proceedings contains information from the IPHE Infrastructure Workshop, a two-day interactive workshop held on February 25-26, 2010, to explore the market implementation needs for hydrogen fuelin

  2. HUD Grant Writing Workshop

    Broader source: Energy.gov [DOE]

    The U.S. Department of Housing and Urban Development’s (HUD's) Utah Office is offering a free two-day grant writing workshop at the Salt Lake City Library. This workshop is intended to assist with...

  3. Structured Innovation Initiative Workshop

    Broader source: Energy.gov [DOE]

    Following Water Power Week in Washington, D.C, the U.S. Department of Energy (DOE) will conduct a workshop on the Structured Innovation Initiative, similar to the workshop recently held in Edinburgh, Scotland during ICOE 2016.

  4. IPHE Infrastructure Workshop Proceedings

    SciTech Connect (OSTI)

    2010-02-01

    This proceedings contains information from the IPHE Infrastructure Workshop, a two-day interactive workshop held on February 25-26, 2010, to explore the market implementation needs for hydrogen fueling station development.

  5. Ad Lucem Workshop Welcome

    Broader source: Energy.gov [DOE]

    This presentation summarizes the information given by DOE during the DOE Ad Lucem workshop, Feb. 17, 2012.

  6. Membrane Technology Workshop

    Broader source: Energy.gov [DOE]

    Presentation by Charles Page (Air Products & Chemicals, Inc.) for the Membrane Technology Workshop held July 24, 2012

  7. Workshops | Department of Energy

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

    Workshops Workshops Presentations, video and audio files, and other information related to AMO workshops are available for review. Dispatchable Distributed Generation: Manufacturing's Role in Support of Grid Modernization - February 10-11 Sustainability In Manufacturing - January 6-7 High Value Roll to Roll (HV R2R) Manufacturing Innovation - December 2-3, 2015 Materials for Harsh Service Conditions - November 19-20, 2015 Desalination Technology Development Workshop - November 5-6, 2015 Process

  8. GTT Tranmission Workshop- Documents

    Broader source: Energy.gov [DOE]

    Use the links below to download documents from the GTT Transmission Workshop, held November 1-2, 2012.

  9. Detroit Workshop Highlights

    Broader source: Energy.gov [DOE]

    View the video showing highlights from the ninth annual DOE Solid-State Lighting Market Development Workshop in Detroit.

  10. HPC Workshop Reports

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

    Petascale Systems Integration into Large Scale Facilities Workshop August 31, 2007 | URL: https://outreach.scidac.gov/pibp/ Download File: PetascaleFinalDraft.doc | doc | 216 KB This workshop was the first given in the HPC Best Practices Workshop Series. Held in San Francisco, May 15-16 2007, the workshop looked at the challenges and opportunities that come with Petascale systems deployment. Participants identified challenges; searched for the best practices; shared experiences and defined

  11. 2011 User Meeting Workshops

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

    2011 User Meeting Workshops Home Agenda Awards Exhibitors Lodging Posters Registration Photo Contest Transportation Workshops This e-mail address is being protected from spambots. You need JavaScript enabled to view it User Meeting Archives Users' Executive Committee Workshops will follow the end of the plenary sessions on Tuesday and continue through Wednesday.When registering , you will be asked to select the workshop that you plan to attend; this helps organizers plan room assignments and

  12. 2011 User Meeting Workshops

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

    Workshops Home Agenda Awards Exhibitors Lodging Posters Registration Photo Contest Transportation Workshops This e-mail address is being protected from spambots. You need JavaScript enabled to view it User Meeting Archives Users' Executive Committee Workshops will follow the end of the plenary sessions on Tuesday and continue through Wednesday.When registering , you will be asked to select the workshop that you plan to attend; this helps organizers plan room assignments and refreshments.

  13. Building Envelope Stakeholder Workshop

    Broader source: Energy.gov [DOE]

    Oak Ridge National Laboratory is hosting a building envelope stakeholder workshop on behalf of the DOE Building Technologies Office.

  14. Summary of the LARP Mini-Workshop on Electron Lens Simulations at BNL

    SciTech Connect (OSTI)

    Valishev,A.; Luo,Y.; Fischer, W.

    2009-03-01

    This was a 1 day workshop that brought together a group of people working on beam-beam simulations, in particular those comprising the simulation part of LARP Beam-Beam Task. There were 8 participants from BNL, and 3 from FNAL. The goals of the mini-workshop were: (1) To identify the beam-beam effects in LHC and RHIC that could be mitigated using electron lenses, and to define machine and beam parameters one should be looking at in simulations; (2) To assess the group capabilities and establish means of collaboration; and (3) To establish near and long term simulation program, set priorities and a schedule.

  15. Statistical analysis of the dynamics of secondary electrons in the flare of a high-voltage beam-type discharge

    SciTech Connect (OSTI)

    Demkin, V. P.; Mel'nichuk, S. V.

    2014-09-15

    In the present work, results of investigations into the dynamics of secondary electrons with helium atoms in the presence of the reverse electric field arising in the flare of a high-voltage pulsed beam-type discharge and leading to degradation of the primary electron beam are presented. The electric field in the discharge of this type at moderate pressures can reach several hundred V/cm and leads to considerable changes in the kinetics of secondary electrons created in the process of propagation of the electron beam generated in the accelerating gap with a grid anode. Moving in the accelerating electric field toward the anode, secondary electrons create the so-called compensating current to the anode. The character of electron motion and the compensating current itself are determined by the ratio of the field strength to the concentration of atoms (E/n). The energy and angular spectra of secondary electrons are calculated by the Monte Carlo method for different ratios E/n of the electric field strength to the helium atom concentration. The motion of secondary electrons with threshold energy is studied for inelastic collisions of helium atoms and differential analysis is carried out of the collisional processes causing energy losses of electrons in helium for different E/n values. The mechanism of creation and accumulation of slow electrons as a result of inelastic collisions of secondary electrons with helium atoms and selective population of metastable states of helium atoms is considered. It is demonstrated that in a wide range of E/n values the motion of secondary electrons in the beam-type discharge flare has the character of drift. At E/n values characteristic for the discharge of the given type, the drift velocity of these electrons is calculated and compared with the available experimental data.

  16. Ultrafast harmonic rf kicker design and beam dynamics analysis for an energy recovery linac based electron circulator cooler ring

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Huang, Yulu; Wang, Haipeng; Rimmer, Robert A.; Wang, Shaoheng; Guo, Jiquan

    2016-08-01

    An ultrafast kicker system is being developed for the energy recovery linac (ERL) based electron circulator cooler ring (CCR) in the proposed Jefferson Lab Electron Ion Collider (JLEIC, previously named MEIC). In the CCR, the injected electron bunches can be recirculated while performing ion cooling for 10–30 turns before the extraction, thus reducing the recirculation beam current in the ERL to 1/10–1/30 (150mA–50 mA) of the cooling beam current (up to 1.5 A). Assuming a bunch repetition rate of 476.3 MHz and a recirculating factor of 10 in the CCR, the kicker is required to operate at a pulse repetitionmore » rate of 47.63 MHz with pulse width of around 2 ns, so that only every 10th bunch in the CCR will experience a transverse kick while the rest of the bunches will not be disturbed. Such a kicker pulse can be synthesized by ten harmonic modes of the 47.63 MHz kicker pulse repetition frequency, using up to four quarter wavelength resonator (QWR) based deflecting cavities. In this paper, several methods to synthesize such a kicker waveform will be discussed and a comparison of their beam dynamics performance is made using ELEGANT. Four QWR cavities are envisaged with high transverse shunt impedance requiring less than 100 W of total rf power for a Flat-Top kick pulse. Multipole fields due to the asymmetry of this type of cavity are analyzed. The transverse emittance growth due to the sextupole component is simulated in ELEGANT. In conclusion, off-axis injection and extraction issues and beam optics using a multicavity kick-drift scheme will also be discussed.« less

  17. ICP-MS Workshop

    SciTech Connect (OSTI)

    Carman, April J.; Eiden, Gregory C.

    2014-11-01

    This is a short document that explains the materials that will be transmitted to LLNL and DNN HQ regarding the ICP-MS Workshop held at PNNL June 17-19th. The goal of the information is to pass on to LLNL information regarding the planning and preparations for the Workshop at PNNL in preparation of the SIMS workshop at LLNL.

  18. Workshop Presentations

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

    Subsurface Reactive Transport Modeling May 7, 2009 | Author(s): Tim Scheibe, Bruce Palmer | Role of Eddies in Meridional Overturning Circulation May 7, 2009 | Author(s): Christopher Wolfe | Coupled High-Resolution Modeling of the Earth System May 7, 2009 | Author(s): Christopher Kerr | Molecular Dynamics May 7, 2009 | Author(s): Teresa Head-Gordon | Microbial Genome and Metagenome Data Analysis May 7, 2009 | Author(s): Victor Markowitz | Proteomics and BLAST Scaling May 7, 2009 | Author(s): Lee

  19. Particle simulation of collision dynamics for ion beam injection into a rarefied gas

    SciTech Connect (OSTI)

    Giuliano, Paul N.; Boyd, Iain D.

    2013-03-15

    This study details a comparison of ion beam simulations with experimental data from a simplified plasma test cell in order to study and validate numerical models and environments representative of electric propulsion devices and their plumes. The simulations employ a combination of the direct simulation Monte Carlo and particle-in-cell methods representing xenon ions and atoms as macroparticles. An anisotropic collision model is implemented for momentum exchange and charge exchange interactions between atoms and ions in order to validate the post-collision scattering behaviors of dominant collision mechanisms. Cases are simulated in which the environment is either collisionless or non-electrostatic in order to prove that the collision models are the dominant source of low- and high-angle particle scattering and current collection within this environment. Additionally, isotropic cases are run in order to show the importance of anisotropy in these collision models. An analysis of beam divergence leads to better characterization of the ion beam, a parameter that requires careful analysis. Finally, suggestions based on numerical results are made to help guide the experimental design in order to better characterize the ion environment.

  20. 2016 National Cleanup Workshop | Department of Energy

    Office of Environmental Management (EM)

    6 National Cleanup Workshop 2016 National Cleanup Workshop 2016 National Cleanup Workshop The Energy Communities Alliance (ECA) will be holding the 2016 National Cleanup Workshop ...

  1. Field calculations, single-particle tracking, and beam dynamics with space charge in the electron lens for the Fermilab Integrable Optics Test Accelerator

    SciTech Connect (OSTI)

    Noll, Daniel; Stancari, Giulio

    2015-11-17

    An electron lens is planned for the Fermilab Integrable Optics Test Accelerator as a nonlinear element for integrable dynamics, as an electron cooler, and as an electron trap to study space-charge compensation in rings. We present the main design principles and constraints for nonlinear integrable optics. A magnetic configuration of the solenoids and of the toroidal section is laid out. Singleparticle tracking is used to optimize the electron path. Electron beam dynamics at high intensity is calculated with a particle-in-cell code to estimate current limits, profile distortions, and the effects on the circulating beam. In the conclusions, we summarize the main findings and list directions for further work.

  2. Beam dynamics study of a 30 MeV electron linear accelerator to drive a neutron source

    SciTech Connect (OSTI)

    Kumar, Sandeep; Yang, Haeryong; Kang, Heung-Sik

    2014-02-14

    An experimental neutron facility based on 32 MeV/18.47 kW electron linac has been studied by means of PARMELA simulation code. Beam dynamics study for a traveling wave constant gradient electron accelerator is carried out to reach the preferential operation parameters (E = 30 MeV, P = 18 kW, dE/E < 12.47% for 99% particles). The whole linac comprises mainly E-gun, pre-buncher, buncher, and 2 accelerating columns. A disk-loaded, on-axis-coupled, 2π/3-mode type accelerating rf cavity is considered for this linac. After numerous optimizations of linac parameters, 32 MeV beam energy is obtained at the end of the linac. As high electron energy is required to produce acceptable neutron flux. The final neutron flux is estimated to be 5 × 10{sup 11} n/cm{sup 2}/s/mA. Future development will be the real design of a 30 MeV electron linac based on S band traveling wave.

  3. R&D ERL: Beam dynamics, parameters, and physics to be learned

    SciTech Connect (OSTI)

    Kayran, D.

    2010-02-01

    The R&D ERL facility at BNL aims to demonstrate CW operation of ERL with average beam current in the range of 0.1-1 ampere, combined with very high efficiency of energy recovery. The ERL is being installed in one of the spacious bays in Bldg. 912 of the RHIC/AGS complex (Fig. 1). The bay is equipped with an overhead crane. The facility has a control room, two service rooms and a shielded ERL cave. The control room is located outside of the bay in a separate building. The single story house is used for a high voltage power supply for 1 MW klystron. The two-story unit houses a laser room, the CW 1 MW klystron with its accessories, most of the power supplies and electronics. The ERL R&D program has been started by the Collider Accelerator Department (C-AD) at BNL as an important stepping-stone for 10-fold increase of the luminosity of the Relativistic Heavy Ion Collider (RHIC) using relativistic electron cooling of gold ion beams with energy of 100 GeV per nucleon. Furthermore, the ERL R&D program extends toward a possibility of using 10-20 GeV ERL for future electron-hadron/heavy ion collider, MeRHIC/eRHIC. These projects are the driving force behind the development of ampere-class ERL technology, which will find many applications including light sources and FELs. The intensive R&D program geared towards the construction of the prototype ERL is under way: from development of high efficiency photo-cathodes to the development of new merging system compatible with emittance compensation.

  4. Workshops | Argonne National Laboratory

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

    Workshops Photos Videos Career Opportunities CNM Intranet CNM on Facebook Career Opportunities CNM Intranet CNM on Facebook Argonne National Laboratory Center for Nanoscale Materials About Research Capabilities For Users People Publications News & Events News & Events RESEARCH HIGHLIGHTS COLLOQUIUM SERIES SEMINAR SERIES Argonne Press Releases Feature Stories In the News Users Meetings Workshops Photos Videos Workshops September 17-18, 2015 Argonne National Laboratory and the

  5. Multimaterial Joining Workshop

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

    Multimaterial Joining Workshop - Monday July 23, 2012 P a g e | 1 Workshop Overview This Advanced Manufacturing Office (AMO) workshop will gather input from stakeholders in industry and academia on the current state of the art, and identify emerging applications, barriers and actions to advance multimaterial joining technologies. Specifically, AMO wants to learn more about the current state of multimaterial joining research and industry trends; identify high value opportunities and emerging

  6. Hydrogen Compatible Materials Workshop

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

    Hydrogen Compatible Materials Workshop November 3 rd , 2010 Research, Engineering, and Applications Center for Hydrogen Sandia National Laboratory, Livermore, CA Introduction: On November 3 rd , 2010, Sandia National Labs hosted a workshop focused on hydrogen compatible materials and components. The goals of the workshop were two-fold, 1) to identify gaps in hydrogen compatible materials R&D, and 2) to develop international R&D pathways that address the identified R&D gaps. This

  7. 2012 User Meeting Workshops

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

    Workshops 2012 ALS User Meeting Workshops Home Agenda Awards Exhibitors Lodging Posters Registration Transportation Workshops This e-mail address is being protected from spambots. You need JavaScript enabled to view it User Meeting Archives Users' Executive Committee Advanced Characterization of Critical Magnetic Materials Catherine Jenkins, Peter Fischer, Elke Arenholz, and David Shuh (LBNL) 67-3111 (Wed.) Automating Tomographic Data Analysis: Transfer, Storage, Processing, and Simulation Dula

  8. BEAM INSTRUMENTATION FOR HIGH POWER HADRON BEAMS

    SciTech Connect (OSTI)

    Aleksandrov, Alexander V

    2013-01-01

    This presentation will describe developments in the beam diagnostics which support the understanding and operation of high power hadron accelerators. These include the measurement of large dynamic range transverse and longitudinal beam profiles, beam loss detection, and non-interceptive diagnostics.

  9. Critical Materials Workshop

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

    Critical Materials Workshop U.S. Department of Energy April 3, 2012 eere.energy.gov Dr. Leo Christodoulou Program Manager Advanced Manufacturing Office Energy Efficiency and...

  10. ESnet Requirements Workshops

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

    Requirements Workshops Summary for Sites Eli Dart, Network Engineer ESnet Network Engineering Group ESnet Site Coordinating Committee Meeting Clemson, SC February 2, 2011 Lawrence ...

  11. HPC Workshop Reports

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

    Petascale Systems Integration into Large Scale Facilities Workshop August 31, 2007 | URL: https:outreach.scidac.govpibp Download File: PetascaleFinalDraft.doc | doc | 216 KB ...

  12. ESPC Workshop (Nashville, TN)

    Broader source: Energy.gov [DOE]

    This three-day workshop educates attendees on how to implement energy and water projects through an energy savings performance contract (ESPC).

  13. San Francisco Workshop Highlights

    Broader source: Energy.gov [DOE]

    View the video showing highlights from the twelfth annual DOE Solid-State Lighting R&D Workshop in San Francisco. 

  14. Meetings and Workshops

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

    feed-image Digg: ALSBerkeleyLab Facebook Page: 208064938929 Flickr: advancedlightsource/albums Twitter: AdvLightSource YouTube: AdvancedLightSource Home User Information Meetings and Workshops Meetings and Workshops A listing of synchrotron-related meetings, conferences, and workshops can be found at lightsources.org . Meetings and Workshops Archive 2nd conference on Intense field- Short Wavelength Atomic and Molecular Processes - ISWAMP2 Print http://iswamp2.jlu.edu.cn/ July 20-22, 2013; Xi'an,

  15. Hydrogen Sensor Workshop Agenda

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

    3a. The Agenda HYDROGEN SENSOR WORKSHOP AGENDA June 8 th , 2011  Chicago, IL 8:00 am - 8:30 am Registration Workshop will take place in a room at the Convention Center. Exact room 21. 8:30 am - 8:50 am Welcome Remarks William Buttner, NREL DOE Fuel Cell and Hydrogen Program; Role of Sensors 8:50 am - 9:00 am Scott McWorter, SRNL; DOE 9:00 am - 9:20 am 2007 Workshop Robert Glass/Lawrence Livermore National Laboratory 2011 Workshop Background and Objectives; Technology Update Robert Burgess,

  16. Transmission Workshop | Department of Energy

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

    DOE Grid Tech Team » Activities/Outreach » GTT Activities » Transmission Workshop Transmission Workshop Transmission Workshop GTT Transmission Workshop - November 1-2, 2012 On November 1-2, 2012, the GTT presented a workshop on grid integration on the transmission system at the DoubleTree Crystal City near Washington, DC. A draft of the DOE Action Plan Addressing the Electricity Transmission System was discussed during the workshop, which addressed the challenges and opportunities presented

  17. Beam Status

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

    Beam Status Beam Status Print Loading... You can also view the Operations Group's Beam History archives.

  18. Past Meetings and Workshops

    Office of Energy Efficiency and Renewable Energy (EERE)

    Industry workshops help the U.S. Department of Energy (DOE) Solar Energy Technologies Office obtain a wide range of stakeholder feedback to guide the SunShot Initiative. DOE held the workshops below to identify barriers and opportunities associated with the SunShot goals.

  19. Electron lenses for compensation of beam-beam effects: Tevatron, RHIC, LHC

    SciTech Connect (OSTI)

    Shiltsev, V.; /Fermilab

    2007-12-01

    Since previous BEAM'06 workshop a year ago, significant progress has been made in the field of beam-beam compensation (BBC)--it has been experimentally demonstrated that both Tevatron Electron Lenses (TEL) significantly improve proton and luminosity lifetimes in high-luminosity stores. This article summarizes these results and discusses prospects of the BBC in Tevatron, RHIC and LHC.

  20. 2015 Construction Safety Workshop Presentations

    Office of Energy Efficiency and Renewable Energy (EERE)

    2015 Construction Safety Workshop Presentations, June 16, 2015 - Forrestal Building - Washington, DC

  1. 2014 DOE Project Management Workshop

    Broader source: Energy.gov [DOE]

    What:  2014 DOE Project Management Workshop (Meeting the Challenge—Integrated Acquisition & Project Management)

  2. Workshop on neutron capture therapy

    SciTech Connect (OSTI)

    Fairchild, R.G.; Bond, V.P.

    1986-01-01

    Potentially optimal conditions for Neutron Capture Therapy (NCT) may soon be in hand due to the anticipated development of band-pass filtered beams relatively free of fast neutron contaminations, and of broadly applicable biomolecules for boron transport such as porphyrins and monoclonal antibodies. Consequently, a number of groups in the US are now devoting their efforts to exploring NCT for clinical application. The purpose of this Workshop was to bring these groups together to exchange views on significant problems of mutual interest, and to assure a unified and effective approach to the solutions. Several areas of preclinical investigation were deemed to be necessary before it would be possible to initiate clinical studies. As neither the monomer nor the dimer of sulfhydryl boron hydride is unequivocally preferable at this time, studies on both compounds should be continued until one is proven superior.

  3. Fuel Cell Bus Workshop

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

    ue Ce ec o o es o a Energy Efficiency & Renewable Energy Fuel Cell Bus Workshop Overview and Purp pose Dimitrios Papageorgopoulos Fuel Cell Technolog gies Prog gram DOE and DOT Joint Fuel Cell Bus Workshop, Washington DC DOE and DOT Joint Fuel Cell Bus Workshop, Washington DC June 7, 2010 June 7, 2010 Fuel Cells - Addressing Energy Challenges Energy Efficiency and Resource Diversity * Fuel cells offer a highly efficient way to use diverse fuels and energy sources Fuel cells offer a highly

  4. Meetings and Workshops Archive

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

    feed-image Digg: ALSBerkeleyLab Facebook Page: 208064938929 Flickr: advancedlightsource/albums Twitter: AdvLightSource YouTube: AdvancedLightSource Meetings and Workshops Archive Photoemission Spectroscopy at SRI2013 Workshop on Photoemission Spectroscopy: The Upcoming Decades Organizers: Alexei Fedorov (ALS) and Peter Johnson (BNL) Tuesday, June 18, 2013 * Location TBD 9:00 a.m.-17:00 p.m. Workshop to take place during SRI 2013 in Washington, D.C., June 19-21, 2013 2013 IEEE International

  5. HPC Workshop Reports

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

    HPSS in the Extreme Scale Era (2018-2022): Report of the Extreme Scale Workshop July 15, 2009 | Download File: HPSSExtremeScaleFINALpublic.pdf | pdf | 1.6 MB This paper, from a workshop held at the National Energy Research Scientific Computing (NERSC) Facility in Oakland, CA, on July 14-15, 2009, is a report on the feasibility of using HPSS into the Extreme Scale era of storage (2018 - 2022). Workshop Participants: Danny Cook, LANL; Jason Hick, LBNL (chair); Jim Minton, LLNL; Henry Newman,

  6. Nuclear Innovation Workshops Report

    SciTech Connect (OSTI)

    Jackson, John Howard; Allen, Todd Randall; Hildebrandt, Philip Clay; Baker, Suzanne Hobbs

    2015-09-01

    The Nuclear Innovation Workshops were held at six locations across the United States on March 3-5, 2015. The data collected during these workshops has been analyzed and sorted to bring out consistent themes toward enhancing innovation in nuclear energy. These themes include development of a test bed and demonstration platform, improved regulatory processes, improved communications, and increased public-private partnerships. This report contains a discussion of the workshops and resulting themes. Actionable steps are suggested at the end of the report. This revision has a small amount of the data in Appendix C removed in order to avoid potential confusion.

  7. Capstone Workshop Portfolio | Department of Energy

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

    Capstone Workshop Portfolio Capstone Workshop Portfolio Capstone Workshop Portfolio Department of Energy Quadrennial Technology Review Capstone Workshop (6.02 MB) More Documents & Publications Department of Energy Quadrennial Technology Review Capstone Workshop Agenda Quadrennial Technology Review Workshop Portfolios Department of Energy Quadrennial Technology Review Capstone Workshop Agenda

  8. NWHA Fall Workshop & Tour

    Broader source: Energy.gov [DOE]

    This year’s Fall Regional Workshop on October 30 will focus on extending the longevity of our legacy hydropower projects through upgrades, refurbishment and life extensions, while meeting needs of...

  9. 2014 Joint Action Workshop

    Broader source: Energy.gov [DOE]

    The Joint Action Workshop is an annual event for joint action agencies and their members to meet informally and discuss emerging policy, regulatory, and power supply issues, and other topics...

  10. Complex Flow Workshop Report

    SciTech Connect (OSTI)

    none,

    2012-05-01

    This report documents findings from a workshop on the impacts of complex wind flows in and out of wind turbine environments, the research needs, and the challenges of meteorological and engineering modeling at regional, wind plant, and wind turbine scales.

  11. Critical Materials Workshop

    Broader source: Energy.gov [DOE]

    AMO hosted a public workshop on Tuesday, April 3, 2012 in Arlington, VA to provide background information on critical materials assessment, the current research within DOE related to critical...

  12. Conferences, workshops, trainings

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

    models, leading to breakthrough accuracies in benchmarks for computer vision, language, etc. Jan 11 Mon 8:30 AM Santa Fe Jets and Heavy Flavor Workshop Inn and Spa at...

  13. HPC Workshop Reports

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

    The 4th Workshop on HPC Best Practices: Power Management September 29, 2010 | URL: https:outreach.scidac.govpmbp Download File: PMBPreport110322.pdf | pdf | 520 KB This, the...

  14. Stanford Geothermal Workshop

    Broader source: Energy.gov [DOE]

    Now in its 40th year, the Stanford Geothermal Workshop is one of the world's longest running technical meetings on geothermal energy. The conference brings together engineers, scientists and...

  15. LOD Workshop Invitation

    Open Energy Info (EERE)

    promote the use of linked open data in our organizations * Follow up meeting organized by CDKN and Worldbank to be held on Tuesday. http:openei.orgwikiOpenDataWorkshop2012...

  16. Membrane Technology Workshop

    Broader source: Energy.gov [DOE]

    At the Membrane Technology Workshop (held July 24, 2012, in Rosemont, IL), stakeholders from industry and academia explored the status of membrane research and development (R&D). Participants ...

  17. UVIG Fall Technical Workshop

    Broader source: Energy.gov [DOE]

    The 2015 UVIG Fall Technical Workshop will provide attendees with an expanded perspective on the status of wind and solar integration and interconnection to utility systems in the United States and...

  18. SAXS-Diffraction_Workshop

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

    Workshop on Small-angle X-ray ScatteringDiffraction in Biology October 21, 1998 SPEAKERS Dimitri Svergun, EMBL-Hamburg John E. Johnson, The Scripps Research Institute Wah Chiu, ...

  19. Renewable Energy Finance Workshop

    Open Energy Info (EERE)

    Agenda - December 10 th , 2012 Renewable Energy Finance Workshop 12:00 - 12:15 WELCOME AND INTRODUCTIONS- Richard Kauffman 12:15 - 12:25 PRESIDENTIAL PRIORITIES - Jon Powers & Rick...

  20. Alaska Solar Energy Workshop

    Broader source: Energy.gov [DOE]

    The Alaska Solar Energy Workshop is a forum to exchange ideas and information about best practices, performance of systems in the arctic, project development and financing, and lessons learned about solar energy.

  1. Special parallel processing workshop

    SciTech Connect (OSTI)

    1994-12-01

    This report contains viewgraphs from the Special Parallel Processing Workshop. These viewgraphs deal with topics such as parallel processing performance, message passing, queue structure, and other basic concept detailing with parallel processing.

  2. Sustainable Nanomaterials Workshop

    Broader source: Energy.gov [DOE]

    The Sustainable Nanomaterials Workshop (held in Washington, D.C., on June 26, 2012) gathered stakeholders from industry and academia to discuss the current state of the art for sustainable nanomat...

  3. Alaska Solar Energy Workshop

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Alaska Solar Energy Workshop is a forum to exchange ideas and information about best practices, performance of systems in the arctic, project development and financing, and lessons learned...

  4. Multimaterial Joining Workshop

    Broader source: Energy.gov [DOE]

    At the Multimaterial Joining Workshop (held in Chicago, IL, on July 23, 2012), subject matter experts from industry and academia described their views on state-of-the-art technologies, opportuniti...

  5. Algal Biofuels Strategy Workshops

    Office of Energy Efficiency and Renewable Energy (EERE)

    The U.S. Department of Energy’s Bioenergy Technologies Office (BETO) hosted the Algal Biology Toolbox Workshop on May 24–25, 2016, in San Diego, California. Because biological productivity is a key...

  6. Transportation Management Workshop: Proceedings

    SciTech Connect (OSTI)

    Not Available

    1993-10-01

    This report is a compilation of discussions presented at the Transportation Management Workshop held in Gaithersburg, Maryland. Topics include waste packaging, personnel training, robotics, transportation routing, certification, containers, and waste classification.

  7. CDP Spring Workshop 2016

    Broader source: Energy.gov [DOE]

    Combating climate change requires Silicon Valley innovation, which is why CDP (formerly the Carbon Disclosure Project), has partnered with Google for its annual Spring Workshop, which will be held...

  8. Distributed Wind Energy Workshop

    Broader source: Energy.gov [DOE]

    Join instructor Brent Summerville for a fun and interactive workshop at Appalachian State University's Small Wind Research and Demonstration Site. Learn about a variety of distributed wind energy...

  9. Critical Materials Workshop Agenda

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

    Critical Materials Workshop Sheraton Crystal City 1800 Jefferson Davis Highway, Arlington, VA April 3, 2012, 8 am - 5 pm Time (EDT) Activity Speaker 8:00 am - 9:00 am Registration ...

  10. 2014 AAGEN Leadership Workshop

    Broader source: Energy.gov [DOE]

    AAGEN is pleased to announce that the 2014 AAGEN Leadership Workshop: Pathways to Success, has been scheduled for Thursday, June 5, 2014. Click here to view the program agenda. Save the date and...

  11. Systems Analysis Workshop Purpose

    Broader source: Energy.gov [DOE]

    Presentation on SAW purpose to the DOE Systems Analysis Workshop held in Washington, D.C. July 28-29, 2004 to discuss and define role of systems analysis in DOE Hydrogen Program.

  12. ARM - Instrumentation Workshop 2008

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

    FacilityInstrumentation Workshop 2008 AAF Information Proposal Process Baseline Instruments Campaign Instruments AAF Fact Sheet G-1 Fact Sheet Images Science Airborne Instrumentation Needs for Climate and Atmospheric Research The DOE ARM Aerial Facility Field Campaigns AAF Campaigns 2007 - UAV Campaigns 1993 - 2006, 2015 Other Aircraft Campaigns 1993 - 2010 AAF Contacts Rickey Petty DOE AAF Program Director Beat Schmid Technical Director Instrumentation Workshop 2008 Agenda and Presentations

  13. Meetings and Workshops

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

    meetings workshops Meetings and Workshops LLNL Well Represented at Joint Working Group Meeting Twenty-nine LLNL researchers participated in a Joint Working Group (JOWOG) meeting hosted by the United Kingdom's Atomic Weapons Establishment (AWE) in Aldermaston, UK, from July 18 to 22. JOWOGs enable classified technical exchanges between UK and U.S. collaborators via the two nations' 1958 Mutual Defense Agreement, which was reaffirmed by the signing of a new Statutory Determination. Joint Working

  14. ARM - Teacher Workshops

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

    TeachersTeacher Workshops Outreach Home Room News Publications Traditional Knowledge Kiosks Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans Teacher Workshops The ARM Education and Outreach Program plans on conducting teacher in-service training as requested by the local communities and regions hosting ARM's data gathering field sites. Laura Marsh

  15. Industrial Fuel Flexibility Workshop

    SciTech Connect (OSTI)

    none,

    2006-09-01

    On September 28, 2006, in Washington, DC, ITP and Booz Allen Hamilton conducted a fuel flexibility workshop with attendance from various stakeholder groups. Workshop participants included representatives from the petrochemical, refining, food and beverage, steel and metals, pulp and paper, cement and glass manufacturing industries; as well as representatives from industrial boiler manufacturers, technology providers, energy and waste service providers, the federal government and national laboratories, and developers and financiers.

  16. Conferences & Workshops

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

    Conferences & Workshops Conferences & Workshops The Institute for Materials Science supports the implementation of the Laboratory's materials strategy and promotes a strong sense of community among the Laboratory's materials researchers. Contact Institute Administrator Caryll Blount Institute for Materials Science (505) 665-3950 Email Materials Science and Data Technology Nexus: IMS mini-symposium September 21, 2016 - Recent years have witnessed exponential growth in the ability to

  17. 2010 Workshop.pptx

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

    CSTEC Annual External Workshop - August 4, 2010 CSTEC's Annual External Workshop offered a detailed view of the center's current and future research to the 18 faculty and 50 students and post docs attending and also to the four members of our external advisory board - David Eaglesham, Chief Technology Officer at First Solar; Larry Kazmerski, Director of the National Center for Photovoltaics at NREL; Venky Narayanamurti, Benjamin Peirce Professor of Technology and Public Policy and Professor of

  18. Connected Lighting Systems Workshop | Department of Energy

    Energy Savers [EERE]

    Lighting Systems Workshop Connected Lighting Systems Workshop 2016 Connected Lighting Systems Workshop Agenda.pdf (373.88 KB) More Documents & Publications Connected Lighting ...

  19. Workshops and Events | Department of Energy

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

    Workshops and Events Workshops and Events The Advanced Computing Tech Team has held workshops annually to engage industry, academy and government together on the subject. October ...

  20. Critical Materials Workshop Plenary Session Videos | Department...

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

    Critical Materials Workshop Plenary Session Videos Critical Materials Workshop Plenary Session Videos Welcome and Overview of Workshop and Energy Innovation Hubs Speakers * Dr. Leo ...

  1. Rates Meetings and Workshops (pbl/rates)

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

    Rate Case Workshops Other Power Rates-Related Workshops July 1, 2004 - Rates and Finances Workshop (updated June 25, 2004) (financial and rate forecasts and scenarios for FY...

  2. Advanced Conversion Roadmap Workshop | Department of Energy

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

    Advanced Conversion Roadmap Workshop Advanced Conversion Roadmap Workshop DOE introduction slides to the Advanced Conversion Roadmap Workshop webinar. ctabwebinardoe.pdf (1.47 ...

  3. Natural Gas and Hydrogen Infrastructure Opportunities Workshop...

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

    Opportunities Workshop Agenda Natural Gas and Hydrogen Infrastructure Opportunities Workshop Agenda Agenda for the Natural Gas and Hydrogen Infrastructure Opportunities Workshop ...

  4. WORKSHOP: SUSTAINABILITY IN MANUFACTURING AGENDA AND OVERVIEW...

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

    WORKSHOP: SUSTAINABILITY IN MANUFACTURING AGENDA AND OVERVIEW WORKSHOP: SUSTAINABILITY IN MANUFACTURING AGENDA AND OVERVIEW PDF icon Sustainable Manufacturing Workshop Agenda.pdf ...

  5. Demonstration and Deployment Strategy Workshop Flier | Department...

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

    Strategy Workshop Flier Demonstration and Deployment Strategy Workshop Flier Demonstration and Deployment Strategy Workshop Flier danddworkshopflier.pdf (1.15 MB) More ...

  6. Microsoft PowerPoint - LANL AM Workshop_July 2015_Chou_published.pptx

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

    Additive Manufacturing Materials Workshop Temperature Simulations and Measurements Manufacturing Materials Workshop p for Process Qualification in Powder-Bed Electron Beam Additive Manufacturing Electron Beam Additive Manufacturing Kevin Chou Kevin Chou Professor Mechanical Engineering Department The University of Alabama The University of Alabama Assistant Director for Technology Advanced Manufacturing National Program Office g g U.S. Department of Commerce July 20, 2015 Disclaimer and Note *

  7. Beam Dynamics Laboratory

    Energy Science and Technology Software Center (OSTI)

    1995-06-22

    Simple model of an accelerator as it is running can be interactively manipulated to observe the effects of the manipulations of particle motion. The system can be used to demonstrte effects such as decoherence, slow-extraction, resonance islands, coupling resonance and synchro-betatron coupling.

  8. International Hydrogen Infrastructure Challenges Workshop Summary...

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

    International Hydrogen Infrastructure Challenges Workshop Summary - NOW, NEDO, and DOE International Hydrogen Infrastructure Challenges Workshop Summary - NOW, NEDO, and DOE ...

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

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

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