Physics of plasmas, nonlinear dynamics, and electromagnetics
257
Scopus Publications
Scopus Publications
Pressure dependence of magnetron sputtering: 2D-RZ particle-in-cell and 1D fluid modeling Joseph G. Theis, Gregory R. Werner, Thomas G. Jenkins, Daniel Main, John R. Cary Physics of Plasmas, 2026 We reproduce the consistently-seen experimental voltage vs pressure (V–p) dependence of DC magnetron sputtering with two-dimensional-RZ particle-in-cell (PIC) simulation. Informed by PIC simulation, we develop a steady-state, 1D-axial fluid model of the sheath and presheath that also reproduces this V–p dependence. The V–p dependence is the relationship between the steady-state voltage needed to maintain a constant discharge current and the neutral gas pressure. V–p dependence is fundamental to device performance, but has not previously been reproduced with simulation or satisfactorily explained. We find that the decrease in voltage with increasing pressure is not due to electron recapture at the cathode. Rather, the constant current dictates a constant global ionization rate, so the voltage decrease compensates for the increase in neutral gas density by lowering the energy of the plasma electrons, which decreases their ionization probability. The PIC simulations also reveal that the presheath and bulk plasma are unaffected by the electron reflection coefficient at the cathode; the only effect of increasing reflection is a reduction in the sheath voltage and width. In addition to the potential structure, we explore how pressure affects the plasma density, particle drifts, and particle energy distributions.
Modeling the role of secondary electron emission in direct current magnetron sputtering using explicit energy-conserving particle-in-cell methods Daniel Main, Thomas G. Jenkins, Joseph G. Theis, Gregory R. Werner, John R. Cary, Eve Lanham, Seth A. Veitzer, Scott E. Kruger Physics of Plasmas, 2026 We present results from particle-in-cell (PIC) simulations of direct current magnetron sputtering (dcMS) in a 2D cylindrically symmetric geometry. The PIC model assumes an electrostatic approximation and includes the Monte Carlo collision method to model collisions between electrons and the neutral gas. A newly implemented explicit energy-conserving PIC algorithm (EC-PIC) is also exercised by the model, and results are compared with the standard momentum-conserving PIC (MC-PIC) method. We use these simulation tools to examine how changes in ion-induced secondary electron yield (SEY) and the external circuit impact the steady-state current, voltage, and plasma density of dcMS discharges. We show that in general, higher ion-induced SEY and lower external resistance values lead to larger currents, smaller voltages, and larger plasma densities. Simulation results presented in this paper related to the ion-induced SEY demonstrate similar trends that have been observed in previous experimental work and theory. Finally, we demonstrate that EC-PIC maintains numerical stability up to cell sizes as large as ten times the electron Debye length. While we have not performed a comprehensive stability study of MC-PIC, this paper demonstrates improved stability over the standard practice often assumed in MC-PIC. We therefore demonstrate that EC-PIC allows for modeling a wide range of plasma currents and densities using modest computational resources compared with PIC models that require resolution of the electron Debye length.
Grid instability growth rates for explicit, electrostatic momentum- and energy-conserving particle-in-cell algorithms Luke C. Adams, Gregory R. Werner, John R. Cary Physics of Plasmas, 2025 When the Debye length is not resolved in a simulation using the most common particle-in-cell (PIC) algorithm, the plasma will unphysically heat until the Debye length becomes resolved via a phenomenon known as grid heating. This paper presents detailed numerical measurements of grid heating for several explicit PIC algorithms, including the first systematic (covering the Debye length resolution and drift-velocity parameter space) study of grid-heating growth rates for the most common electrostatic momentum-conserving PIC algorithm. Additionally, we derive and test a cubic-spline-based PIC algorithm that ensures that the interpolated electric field has a continuous first derivative but find that a differentiable electric field has minimal impact on grid-heating stability. We also considered energy-conserving PIC algorithms with linear and quadratic interpolation functions. In all cases, we find that unphysical heating can occur for some combinations of Debye under-resolution and plasma drift. We demonstrate analytically and numerically that grid heating cannot be eliminated by using a higher-order field solve and give an analytical expression for the cold-beam stability limits of some energy-conserving algorithms.
Nonlocal effects on thermal transport in hydrodynamic simulations of unmagnetized MagLIF-relevant gaspipes on NIF R. Y. Lau, D. J. Strozzi, M. Sherlock, M. Weis, A. S. Joglekar, W. A. Farmer, Y. Shi, J. R. Cary Physics of Plasmas, 2025 We present simulations of heat flow relevant to gaspipe experiments on the National Ignition Facility to investigate kinetic effects on transport phenomena. D2 and neopentane (C5H12) filled targets are used to study the laser preheat stage of a MagLIF scheme where an axial magnetic field is sometimes applied to the target. Simulations were done with the radiation-MHD code HYDRA with a collision-dominated fluid model and the SNB nonlocal electron thermal conduction model. Using the SNB model to evolve the electron temperature increased the heat front propagation of neopentane gas targets compared to a local model by limiting radial heat flow. This increases electron temperature near the axis, which decreases laser absorption. We find that the effect of heat flow models on temperature profiles and laser propagation is modest. Beyond the SNB model, we utilize HYDRA to initialize plasma conditions for the Vlasov–Fokker–Planck K2 code. We run K2 until a quasi-steady state is reached and examine the impact of kinetic effects on heat transport. Although axial heat flow is well predicted by fluid models, the fluid model consistently overpredicts radial heat flow up to 150% in regions with the largest temperature gradient of D2 filled gaspipes. On the other hand, the SNB nonlocal electron conduction model is found to be adequate for capturing kinetic heat flow in gaspipes.
Kinetic simulations of low-temperature plasmas used for plasma processing: ICP and feature-scale models Daniel Main, Thomas G. Jenkins, Eve Lanham, Scott E. Kruger, John R. Cary Proceedings of SPIE the International Society for Optical Engineering, 2025 Low-temperature kinetic plasma simulations using Particle-in-Cell (PIC) and Monte Carlo methods (DSMC/MCC) for the chemistry can provide many advantages over fluid simulations, including detailed information about the Ion Energy Distribution Function (IEDF) and Ion Angular Distribution Function (IADF) that are critical for plasma processing. In this presentation, two different types of simulations illustrating the advantages of kinetic modeling are demonstrated. The first is a macroscopic-scale simulation of an Inductively Coupled Plasma (ICP). We demonstrate how implicit methods can make these challenging simulations feasible, and how process parameters such as neutral gas density and bias frequency affect the IEDF and IADF at the wafer surface. We also demonstrate a method of providing constant power to the plasma which decreases run-times to reach steady state and examine the steady-state ion fluxes and IEDFs/IADFs incident on the wafer as a function of bias frequency and waveform shape. Secondly, we discuss efforts to develop microscopic feature-scale simulation capabilities, e.g. for through-silicon vias or other high-aspect-ratio etch features wherein the trajectories of etching species may be affected by charge accumulation on feature sidewalls. Here, our recent efforts have focused on the development of self-consistent flux boundary conditions from macroscopic (sheath)-scale simulations that can be used as inputs for such feature-scale simulations.
Empirically extending 1D Child-Langmuir theory to a finite temperature beam Jesse M. Snelling, Gregory R. Werner, John R. Cary Physics of Plasmas, 2024 Numerical solutions to the 1D steady-state Vlasov–Poisson system are used to develop a straightforward empirical formula for the electric current density transmitted through a vacuum diode (voltage gap) as a function of gap distance, gap voltage, the injected current density, and the average velocity and temperature of injected particles, as well as their charge and mass. This formula generalizes the 1D cold beam Child–Langmuir law (which predicts the maximum transmitted current for mono-energetic particles in a planar diode as a function of gap voltage and distance) to the case where particles are injected with a finite velocity spread. Though this case is of practical importance, no analytical solution is known. Found by a best fit to results from particle-in-cell simulations, the empirical formula characterizes the current transmitted across the diode for an injected velocity distribution of a drifting Maxwellian. It is not meant to yield a precise answer, but approximately characterizes the effect of space charge on transmitted current density over a large input space. The formula allows quick quantitative estimation of the effect of space charge in diode-like devices, such as gate-anode gaps in nanoscale vacuum channel transistors.
Kinetic simulations of low-temperature plasmas used for plasma processing Thomas G. Jenkins, Daniel Main, Eve Lanham, Scott E. Kruger, John R. Cary Proceedings of SPIE the International Society for Optical Engineering, 2024 Low-temperature kinetic plasma simulations using particle-in-cell (PIC) and Monte Carlo methods (DSMC/MCC) for the chemistry can provide many advantages over the more popular fluid simulations, including detailed information about the ion energy and angular distribution functions that are critical for plasma processing. In this presentation, two different types of simulations illustrating the power of kinetic modeling are demonstrated. The first is a macroscopic-scale simulation of an inductively coupled plasma (ICP). We demonstrate how implicit methods can make these challenging simulations feasible, and show that our numerical model captures salient physical effects (inductive coupling, sheath formation, plasma generation, etc.) of the ICP discharge. Efforts to hasten the convergence of these simulations to steady-state and to improve their predictive capabilities are also summarized. Secondly, we outline ongoing work to develop microscopic feature-scale simulations of a through-silicon-via etch process, obtaining potential boundary conditions and incident particle fluxes within the feature from larger-scale kinetic sheath computations. For both simulation types, ion energy-angle distributions at the wafer surface, electron kinetics, and the detailed physics of the sheath and presheath can be computed by our numerical model.
Temporal evolution of the light emitted by a thin, laser-ionized plasma source Valentina Lee, Robert Ariniello, Christopher Doss, Kathryn Wolfinger, Peter Stoltz, Claire Hansel, Spencer Gessner, John Cary, Michael Litos Physics of Plasmas, 2024 We present an experimental and simulation-based investigation of the temporal evolution of light emission from a thin, laser-ionized helium plasma source. We demonstrate an analytic model to calculate the approximate scaling of the time-integrated, on-axis light emission with the initial plasma density and temperature, supported by the experiment, which enhances the understanding of plasma light measurement for plasma wakefield accelerator (PWFA) plasma sources. Our model simulates the plasma density and temperature using a split-step Fourier code and a particle-in-cell code. A fluid simulation is then used to model the plasma and neutral density, and the electron temperature as a function of time and position. We then show the numerical results of the space-and-time-resolved light emission and that collisional excitation is the dominant source of light emission. We validate our model by measuring the light emitted by a laser-ionized plasma using a novel statistical method capable of resolving the nanosecond-scale temporal dynamics of the plasma light using a cost-effective camera with microsecond-scale timing jitter. This method is ideal for deployment in the high radiation environment of a particle accelerator that precludes the use of expensive nanosecond-gated cameras. Our results show that our models can effectively simulate the dynamics of a thin, laser-ionized plasma source. In addition, this work provides a detailed understanding of the plasma light measurement, which is one of the few diagnostic signals available for the direct measurement of PWFA plasma sources.
Attosecond-Angstrom free-electron-laser towards the cold beam limit A. F. Habib, G. G. Manahan, P. Scherkl, T. Heinemann, A. Sutherland, R. Altuiri, B. M. Alotaibi, M. Litos, J. Cary, T. Raubenheimer, E. Hemsing, M. J. Hogan, J. B. Rosenzweig, P. H. Williams, B. W. J. McNeil, B. Hidding Nature Communications, 2023 Electron beam quality is paramount for X-ray pulse production in free-electron-lasers (FELs). State-of-the-art linear accelerators (linacs) can deliver multi-GeV electron beams with sufficient quality for hard X-ray-FELs, albeit requiring km-scale setups, whereas plasma-based accelerators can produce multi-GeV electron beams on metre-scale distances, and begin to reach beam qualities sufficient for EUV FELs. Here we show, that electron beams from plasma photocathodes many orders of magnitude brighter than state-of-the-art can be generated in plasma wakefield accelerators (PWFAs), and then extracted, captured, transported and injected into undulators without significant quality loss. These ultrabright, sub-femtosecond electron beams can drive hard X-FELs near the cold beam limit to generate coherent X-ray pulses of attosecond-Angstrom class, reaching saturation after only 10 metres of undulator. This plasma-X-FEL opens pathways for advanced photon science capabilities, such as unperturbed observation of electronic motion inside atoms at their natural time and length scale, and towards higher photon energies.
Plasma Photocathodes Ahmad Fahim Habib, Thomas Heinemann, Grace G. Manahan, Daniel Ullmann, Paul Scherkl, Alexander Knetsch, Andrew Sutherland, Andrew Beaton, David Campbell, Lorne Rutherford, Lewis Boulton, Alastair Nutter, Oliver S. Karger, Michael D. Litos, Brendon D. O'Shea, Gerard Andonian, David L. Bruhwiler, Georg Pretzler, Thomas Wilson, Zhengming Sheng, Michael Stumpf, Lars Reichwein, Alexander Pukhov, John R. Cary, Mark J. Hogan, Vitaly Yakimenko, James B. Rosenzweig, Bernhard Hidding Annalen Der Physik, 2023 Plasma wakefield accelerators offer accelerating and focusing electric fields three to four orders of magnitude larger than state‐of‐the‐art radiofrequency cavity‐based accelerators. Plasma photocathodes can release ultracold electron populations within such plasma waves and thus open a path toward tunable production of well‐defined, compact electron beams with normalized emittance and brightness many orders of magnitude better than state‐of‐the‐art. Such beams will have far‐reaching impact for applications such as light sources, but also open up new vistas on high energy and high field physics. This paper reviews the innovation of plasma photocathodes, and reports on the experimental progress, challenges, and future prospects of the approach. Details of the proof‐of‐concept demonstration of a plasma photocathode in 90° geometry at SLAC FACET within the E‐210: Trojan Horse program are described. Using this experience, alongside theoretical and simulation‐supported advances, an outlook is given on future realizations of plasma photocathodes such as the upcoming E‐310: Trojan Horse‐II program at FACET‐II with prospects toward excellent witness beam parameter quality, tunability, and stability. Future installations of plasma photocathodes also at compact, hybrid plasma wakefield accelerators, will then boost capacities and open up novel capabilities for experiments at the forefront of interaction of high brightness electron and photon beams.
Underdense plasma lens with a transverse density gradient C. E. Doss, R. Ariniello, J. R. Cary, S. Corde, H. Ekerfelt, E. Gerstmayr, S. J. Gessner, M. Gilljohann, C. Hansel, B. Hidding, M. J. Hogan, A. Knetsch, V. Lee, K. Marsh, B. O’Shea, P. San Miguel Claveria, D. Storey, A. Sutherland, C. Zhang, M. D. Litos Physical Review Accelerators and Beams, 2023
Plasma photonic spatiotemporal synchronization of relativistic electron and laser beams P. Scherkl, A. Knetsch, T. Heinemann, A. Sutherland, A. F. Habib, O. S. Karger, D. Ullmann, A. Beaton, G. G. Manahan, Y. Xi, A. Deng, M. D. Litos, B. D. O’Shea, S. Z. Green, C. I. Clarke, G. Andonian, R. Assmann, D. L. Bruhwiler, J. Smith, J. R. Cary, M. J. Hogan, V. Yakimenko, J. B. Rosenzweig, B. Hidding Physical Review Accelerators and Beams, 2022
All-optical density downramp injection in electron-driven plasma wakefield accelerators D. Ullmann, P. Scherkl, A. Knetsch, T. Heinemann, A. Sutherland, A. F. Habib, O. S. Karger, A. Beaton, G. G. Manahan, A. Deng, G. Andonian, M. D. Litos, B. D. O'Shea, J. R. Cary, M. J. Hogan, V. Yakimenko, J. B. Rosenzweig, B. Hidding Physical Review Research, 2021
Extremely Dense Gamma-Ray Pulses in Electron Beam-Multifoil Collisions Archana Sampath, Xavier Davoine, Sébastien Corde, Laurent Gremillet, Max Gilljohann, Maitreyi Sangal, Christoph H. Keitel, Robert Ariniello, John Cary, Henrik Ekerfelt, Claudio Emma, Frederico Fiuza, Hiroki Fujii, Mark Hogan, Chan Joshi, Alexander Knetsch, Olena Kononenko, Valentina Lee, Mike Litos, Kenneth Marsh, Zan Nie, Brendan O’Shea, J. Ryan Peterson, Pablo San Miguel Claveria, Doug Storey, Yipeng Wu, Xinlu Xu, Chaojie Zhang, Matteo Tamburini Physical Review Letters, 2021
Laser-ionized, beam-driven, underdense, passive thin plasma lens C. E. Doss, E. Adli, R. Ariniello, J. Cary, S. Corde, B. Hidding, M. J. Hogan, K. Hunt-Stone, C. Joshi, K. A. Marsh, J. B. Rosenzweig, N. Vafaei-Najafabadi, V. Yakimenko, M. Litos Physical Review Accelerators and Beams, 2019
Generation and acceleration of electron bunches from a plasma photocathode A. Deng, O. S. Karger, T. Heinemann, A. Knetsch, P. Scherkl, G. G. Manahan, A. Beaton, D. Ullmann, G. Wittig, A. F. Habib, Y. Xi, M. D. Litos, B. D. O’Shea, S. Gessner, C. I. Clarke, S. Z. Green, C. A. Lindstrøm, E. Adli, R. Zgadzaj, M. C. Downer, G. Andonian, A. Murokh, D. L. Bruhwiler, J. R. Cary, M. J. Hogan, V. Yakimenko, J. B. Rosenzweig, B. Hidding Nature Physics, 2019
Experimental opportunities for the ion channel laser Micha Litos, Robert Ariniello, Christopher Doss, Keenan Hunt-Stone, John R. Cary 2018 IEEE Advanced Accelerator Concepts Workshop ACC 2018 Proceedings, 2018
Simulating magnetrons with VSim Diana M. Cheatham, David N. Smithe, Nicholas A. Roberds, John R. Cary 2018 IEEE International Vacuum Electronics Conference Ivec 2018, 2018
First measurements of trojan horse injection in a plasma wakefield accelerator Ipac 2017 Proceedings of the 8th International Particle Accelerator Conference, 2017
Select Advances in Computational Accelerator Physics John R. Cary, Dan T. Abell, George I. Bell, Benjamin M. Cowan, Jacob R. King, Dominic Meiser, Ilya V. Pogorelov, Gregory R. Werner IEEE Transactions on Nuclear Science, 2016
Present status of coherent electron cooling proof-of-principle experiment Ipac 2014 Proceedings of the 5th International Particle Accelerator Conference, 2014
Present status of Coherent Electron Cooling Proof-of-principle Experiment Proceedings of the 36th International Free Electron Laser Conference Fel 2014, 2014
Wake-field reduction in hybrid photonic crystal accelerator cavities Ipac 2013 Proceedings of the 4th International Particle Accelerator Conference, 2013
Suppressing transverse beam halo with nonlinear magnetic fields Ipac 2013 Proceedings of the 4th International Particle Accelerator Conference, 2013
Progress with coherent electron cooling proof-of principle experiment Ipac 2013 Proceedings of the 4th International Particle Accelerator Conference, 2013
Accurate simulation of the electron cloud in the Fermilab main injector with VORPAL Ecloud 2010 49th Icfa Advanced Beam Dynamics Workshop on Electron Cloud Physics, 2013
VORPAl simulation of eCloud in the Fermilab main injector Ecloud 2010 49th Icfa Advanced Beam Dynamics Workshop on Electron Cloud Physics, 2013
Simulating high-intensity proton beams in nonlinear lattices with pyorbit Ipac 2012 International Particle Accelerator Conference 2012, 2012
Simulations of surface effects and electron emission from diamond-amplifier cathodes Ipac 2011 2nd International Particle Accelerator Conference, 2011
Stress tests of transport models using FACETS code A. Y Pankin, J. D. Callen, J. R. Cary, R. J. Groebner, A. Hakim, S. E. Kruger, A. Pletzer, S. Shasharina, S. Vadlamani, R. H. Cohen, A. H. Kritz, T. D. Rognlien, T. Rafiq, FACETS team, Jan Weiland, Enzo Lazzaro Aip Conference Proceedings, 2011
Simulation of anomalous transport in tokamaks using the FACETS code Alexei Y. Pankin, Alex Pletzer, Srinath Vadlamani, John R. Cary, Ammar Hakim, Scott E. Kruger, Mahmood Miah, Thomas D. Rognlien, Svetlana Shasharina, Glenn Bateman, Arnold H. Kritz, Tariq Rafiq Computer Physics Communications, 2011
Accurate simulation of the electron cloud in the Fermilab main injector with vorpal Ipac 2010 1st International Particle Accelerator Conference, 2010
Vizschema - A unified visualization of computational accelerator physics data Ipac 2010 1st International Particle Accelerator Conference, 2010
FACETS - A framework for parallel coupling of fusion components John R. Cary, Ammar Hakim, Mahmood Miah, Scott Kruger, Alexander Pletzer, Svetlana Shasharina, Srinath Vadlamani, Ronald Cohen, Tom Epperly, Tom Rognlien, Alexei Pankin, Richard Groebner, Satish Balay, Lois McInnes, Hong Zhang Proceedings of the 18th Euromicro Conference on Parallel Distributed and Network Based Processing Pdp 2010, 2010
Vizschema - Visualization interface for scientific data Proceedings of the Iadis International Conference Computer Graphics Visualization Computer Vision and Image Processing 2009 Cgvcvip 2009 Part of the Iadis Mccsis 2009, 2009
Development of high gradient laser wakefield accelerators towards nuclear detection applications at LBNL Cameron G. R. Geddes, David L. Bruhwiler, John R. Cary, Eric H. Esarey, Anthony J. Gonsalves, Chen Lin, Estelle Cormier-Michel, Nicholas H. Matlis, Kei Nakamura, Mike Bakeman, Dmitriy Panasenko, Guillaume R. Plateau, Carl B. Schroeder, Csaba Toth, Wim P. Leemans, Floyd D. McDaniel, Barney L. Doyle Aip Conference Proceedings, 2009
New developments in the simulation of advanced accelerator concepts David L. Bruhwiler, John R. Cary, Benjamin M. Cowan, Kevin Paul, Cameron G. R. Geddes, Paul J. Mullowney, Peter Messmer, Eric Esarey, Estelle Cormier-Michel, Wim Leemans, Jean-Luc Vay, Carl B. Schroeder, Wim Leemans, Eric Esarey Aip Conference Proceedings, 2009
Concurrent, parallel, multiphysics coupling in the FACETS project J R Cary, J Candy, J Cobb, R H Cohen, T Epperly, D J Estep, S Krasheninnikov, A D Malony, D C McCune, L McInnes, A Pankin, S Balay, J A Carlsson, M R Fahey, R J Groebner, A H Hakim, S E Kruger, M Miah, A Pletzer, S Shasharina, S Vadlamani, D Wade-Stein, T D Rognlien, A Morris, S Shende, G W Hammett, K Indireshkumar, A Yu Pigarov, H Zhang Journal of Physics Conference Series, 2009
The 2008 public release of the international multi-tokamak confinement profile database C.M. Roach, M. Walters, R.V. Budny, F. Imbeaux, T.W. Fredian, M. Greenwald, J.A. Stillerman, D.A. Alexander, J. Carlsson, J.R. Cary, F. Ryter, J. Stober, P. Gohil, C. Greenfield, M. Murakami, G. Bracco, B. Esposito, M. Romanelli, V. Parail, P. Stubberfield, I. Voitsekhovitch, C. Brickley, A.R. Field, Y. Sakamoto, T. Fujita, T. Fukuda, N. Hayashi, G.M.D Hogeweij, A. Chudnovskiy, N.A. Kinerva, C.E. Kessel, T. Aniel, G.T. Hoang, J. Ongena, E.J. Doyle, W.A. Houlberg, A.R. Polevoi, ITPA Confinement Database, Modelling Topical Group, ITPA Transport Physics Topical Group Nuclear Fusion, 2008
Computational studies and optimization of wakefield accelerators C G R Geddes, D L Bruhwiler, J R Cary, W B Mori, J-L Vay, S F Martins, T Katsouleas, E Cormier-Michel, W M Fawley, C Huang, X Wang, B Cowan, V K Decyk, E Esarey, R A Fonseca, W Lu, P Messmer, P Mullowney, K Nakamura, K Paul, G R Plateau, C B Schroeder, L O Silva, C Toth, F S Tsung, M Tzoufras, T Antonsen, J Vieira, W P Leemans Journal of Physics Conference Series, 2008
First results from core-edge parallel composition in the FACETS project J R Cary, J Candy, R H Cohen, S Krasheninnikov, D C McCune, D J Estep, J Larson, A D Malony, A Pankin, P H Worley, J A Carlsson, A H Hakim, P Hamill, S Kruger, M Miah, S Muzsala, A Pletzer, S Shasharina, D Wade-Stein, N Wang, S Balay, L McInnes, H Zhang, T Casper, L Diachin, T Epperly, T D Rognlien, M R Fahey, J Cobb, A Morris, S Shende, G W Hammett, K Indireshkumar, D Stotler, A Y Pigarov Journal of Physics Conference Series, 2008
Status of the R&D towards electron cooling of RHIC I. Ben-Zvi, J. Alduino, D. Barton, D. Beavis, M. Blaskiewicz, J. Brennan, A. Burrill, R. Calaga, P. Cameron, X. Chang, A. Drees, A. V. Fedotov, W. Fischer, G. Ganetis, D. Gassner, J. Grimes, H. Hahn, L. Hammons, A. Hershcovitch, H-C Hseuh, D. Kayran, J. Kewisch, R. Lambiase, D. Lederle, V. Litvinenko, C. Longo, W. MacKay, G. Mahler, G. McIntyre, W. Meng, B. Oerter, C. Pai, G. Parzen, D. Pate, D. Phillips, S. Plate, E. Pozdeyev, T. Rao, J. Reich, T. Roser, A. Ruggiero, T. Russo, C. Schultheiss, Z. Segalov, J. Smedley, K. Smith, T. Tallerico, S. Tepikian, R. Than, R. Todd, D. Trbojevic, J. Tuozzolo, P. Wanderer, G. Wang, D. Weiss, Q. Wu, K. Yip, A. Zaltsman, A. Favale, D. Holmes, J. Sredniawski, H. Bluem, M. Cole, J. Rathke, T. Schultheiss, A. Todd, V. Parkhomchuk, V. Reva, A. Burov, S. Nagaitsev, L. Prost, A. Sidorin, A. Smirnov, Y. Derbenev, P. Kneisel, J. Mammosser, L. Phillips, J. Preble, C. Reece, R. Rimmer, J. Saunders, M. Stirbet, H. Wang, A. Aleksandrov, D. Douglas, Y. Kang, D. Abell, G. Bell, D. Bruhwiler, R. Busby, J. Cary, D. Dimitrov, P. Messmer, V. Ranjbar, D. Smithe, A. Sobol, P. Stoltz Proceedings of the IEEE Particle Accelerator Conference, 2007
Laser wakefield simulations towards development of compact particle accelerators C G R Geddes, D Bruhwiler, J R Cary, E Cormier-Michel, E Esarey, C B Schroeder, W A Isaacs, N Stinus, P Messmer, A Hakim, K Nakamura, A J Gonsalves, D Panasenko, G R Plateau, Cs Toth, B Nagler, J van Tilborg, T Cowan, S M Hooker, W P Leemans Journal of Physics Conference Series, 2007
COMPASS, the COMmunity Petascale project for Accelerator Science and Simulation, a broad computational accelerator physics initiative J R Cary, P Spentzouris, J Amundson, L McInnes, M Borland, B Mustapha, B Norris, P Ostroumov, Y Wang, W Fischer, A Fedotov, I Ben-Zvi, R Ryne, E Esarey, C Geddes, J Qiang, E Ng, S Li, C Ng, R Lee, L Merminga, H Wang, D L Bruhwiler, D Dechow, P Mullowney, P Messmer, C Nieter, S Ovtchinnikov, K Paul, P Stoltz, D Wade-Stein, W B Mori, V Decyk, C K Huang, W Lu, M Tzoufras, F Tsung, M Zhou, G R Werner, T Antonsen, T Katsouleas Journal of Physics Conference Series, 2007
Introducing FACETS, the framework application for core-edge transport simulations J R Cary, J Candy, R H Cohen, S Krasheninnikov, D C McCune, D J Estep, J Larson, A D Malony, P H Worley, J A Carlsson, A H Hakim, P Hamill, S Kruger, S Muzsala, A Pletzer, S Shasharina, D Wade-Stein, N Wang, L McInnes, T Wildey, T Casper, L Diachin, T Epperly, T D Rognlien, M R Fahey, J A Kuehn, A Morris, S Shende, E Feibush, G W Hammett, K Indireshkumar, C Ludescher, L Randerson, D Stotler, A Yu Pigarov, P Bonoli, C S Chang, D A D'Ippolito, P Colella, D E Keyes, R Bramley, J R Myra Journal of Physics Conference Series, 2007
Electron injection by a nanowire in the bubble regime Baifei Shen, Yuelin Li, Karoly Nemeth, Hairong Shang, Yong-chul Chae, Robert Soliday, Robert Crowell, Edward Frank, William Gropp, John Cary Physics of Plasmas, 2007
Coupling of laser energy into plasma channels D. A. Dimitrov, R. E. Giacone, D. L. Bruhwiler, R. Busby, J. R. Cary, C. G. R. Geddes, E. Esarey, W. P. Leemans Physics of Plasmas, 2007
Electron and ion acceleration in the bubble regime Optics Infobase Conference Papers, 2007
Initial 3D vorpal simulations for RF electron gun modeling Proceedings 41st Advanced Icfa Beam Dynamics Workshop on Energy Recovery Linacs Erl 2007, 2007
Low energy spread 100 MeV-1 GeV electron bunches from laser wakefield acceleration at loasis 23rd International Linear Accelerator Conference Linac 2006 Proceedings, 2006
Numerical study of the magnetized friction force A. V. Fedotov, D. L. Bruhwiler, A. O. Sidorin, D. T. Abell, I. Ben-Zvi, R. Busby, J. R. Cary, V. N. Litvinenko Physical Review Special Topics Accelerators and Beams, 2006
Mono-energetic beams from laser plasma interactions C.G.R. Geddes, E. Esarey, C.B. Schroeder, Cs. Toth, J. van Tilborg, W.P. Leemans, J.R. Cary, Chet Nieter Proceedings of the IEEE Particle Accelerator Conference, 2005
Laser guiding at relativistic intensities and wakefield particle acceleration in plasma channels Quantum Electronics and Laser Science Conference QELS, 2005
SciDAC advances and applications in computational beam dynamics R Ryne, D Abell, A Adelmann, J Amundson, C Bohn, J Cary, P Colella, D Dechow, V Decyk, A Dragt, R Gerber, S Habib, D Higdon, T Katsouleas, K-L Ma, P McCorquodale, D Mihalcea, C Mitchell, W Mori, C T Mottershead, F Neri, I Pogorelov, J Qiang, R Samulyak, D Serafini, J Shalf, C Siegerist, P Spentzouris, P Stoltz, B Terzic, M Venturini, P Walstrom Journal of Physics Conference Series, 2005
Finding a nonlinear lattice with improved integrability using Lie transform perturbation theory Physical Review E Statistical Nonlinear and Soft Matter Physics, 2004
Longitudinal cooling of a strongly magnetized electron plasma Proceedings of the IEEE Particle Accelerator Conference, 2003
VORPAL: A computational tool for the study of advanced accelerator concepts Proceedings of the IEEE Particle Accelerator Conference, 2003
A Lie transform perturbation scheme for Hamiltonian averaging in self consistent systems Proceedings of the IEEE Particle Accelerator Conference, 2003
Simulation of ionization effects for high-density positron drivers in future plasma wakefield experiments Proceedings of the IEEE Particle Accelerator Conference, 2003
All-optical beamlet train generation Proceedings of the IEEE Particle Accelerator Conference, 2003
Generation of single pulse particle beams in a plasma channel by laser injection in laser wakefield accelerators Proceedings of the IEEE Particle Accelerator Conference, 2003
Boris push with spatial stepping G Penn, P H Stoltz, J R Cary, J Wurtele Journal of Physics G Nuclear and Particle Physics, 2003
VORPAL - A multidimensional code for simulating advanced acceleration concepts Proceedings of the IEEE Particle Accelerator Conference, 2001
The effect of nonlinear transport on beam halo formation Proceedings of the IEEE Particle Accelerator Conference, 2001
Cooling of non-neutral plasma by energy exchange Proceedings of the IEEE Particle Accelerator Conference, 2001
Simulations of electron injection into plasma wake fields by colliding laser pulses using XOOPIC Proceedings of the IEEE Particle Accelerator Conference, 2001
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