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1.
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Nonlinear Delta-f Particle Simulations of Collective Effects in High-Intensity Bunched Beams
/ Qin, Hong ; Davidson, Ronald C ; Hudson, Stuart R ; Startsev, Edward
The collective effects in high-intensity 3D bunched beams are described self-consistently by the nonlinear Vlasov-Maxwell equations.* The nonlinear delta-f method,** a particle simulation method for solving the nonlinear Vlasov-Maxwell equations, is being used to study the collective effects in high-intensity 3D bunched beams. The delta-f method, as a nonlinear perturbative scheme, splits the distribution function into equilibrium and perturbed parts. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.2107
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2.
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Ion Beam Pulse Interaction with Background Plasma in a Solenoidal Magnetic Field
/ Kaganovich, Igor D ; Davidson, Ronald C ; Startsev, Edward
Background plasma can be used as an effective neutralization scheme to transport and compress intense ion beam pulses, and the application of a solenoidal magnetic field allows additional control and focusing of the beam pulse. Ion beam pulse propagation in a background plasma immersed in an applied solenoidal magnetic field has been studied both analytically and numerically with three different particle-in-cell codes (LSP, OOPIC-Pro and EDPIC) to cross-check the validity of the results. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.2062
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3.
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Multispecies Weibel Instability for Intense Ion Beam Propagation Through Background Plasma
/ Davidson, Ronald C ; Hudson, Stuart R ; Kaganovich, Igor D ; Qin, Hong ; Startsev, Edward
In application of heavy ion beams to high energy density physics and fusion, background plasma is utilized to neutralize the beam space charge during drift compression and/or final focus of the ion beam. It is important to minimize the deleterious effects of collective instabilities on beam quality associated with beam-plasma interactions. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.1952
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4.
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Initial Results on Neutralized Drift Compression Experiments (NDCX-IA) for High Intensity Ion Beam
/ Roy, Prabir K ; Anders, Andre ; Baca, David ; Bieniosek, Frank ; Coleman, Joshua E ; Davidson, Ronald C ; Efthimion, Philip ; Eylon, Shmuel ; Gilson, Erik P ; Grant Logan, B et al.
Ion beam neutralization and compression experiments are designed to determine the feasibility of using compressed high intensity ion beams for high energy density physics (HEDP) experiments and for inertial fusion power. To quantitatively ascertain the various mechanisms and methods for beam compression, the Neutralized Drift Compression Experiment (NDCX) facility is being constructed at Lawrence Berkeley National Laboratory (LBNL). [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3856
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5.
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Highly Compressed Ion Beams for High Energy Density Science
/ Friedman, Alex ; Barnard, John J ; Briggs, Richard J ; Callahan, Debra ; Caporaso, George ; Celata, C M ; Davidson, Ronald C ; Faltens, Andy ; Grant-Logan, B ; Grisham, Larry et al.
The Heavy Ion Fusion Virtual National Laboratory (HIF-VNL) is developing the intense ion beams needed to drive matter to the High Energy Density (HED) regimes required for Inertial Fusion Energy (IFE) and other applications. An interim goal is a facility for Warm Dense Matter (WDM) studies, wherein a target is heated volumetrically without being shocked, so that well-defined states of matter at 1 to 10 eV are generated within a diagnosable region. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.339
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6.
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Development of Laser-Induced Fluorescence Diagnostic for the Paul Trap Simulator Experiment
/ Chung, Moses ; Davidson, Ronald C ; Efthimion, Philip ; Gilson, Erik P ; Majeski, Richard ; Startsev, Edward
The Paul Trap Simulator Experiment (PTSX) is a cylindrical Paul trap whose purpose is to simulate the nonlinear dynamics of intense charged particle beam propagation in alternating-gradient magnetic transport systems. For the in-situ measurement of the transverse ion density profile in the PTSX device, which is essential for the study of beam mismatch and halo particle production, a laser-induced fluorescence diagnostic system is being developed. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.2878
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7.
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Accelerator and Ion Beam Tradeoffs for Studies of Warm Dense Matter
/ Barnard, John J ; Briggs, Richard J ; Callahan, Debra ; Davidson, Ronald C ; Friedman, Alex ; Grant-Logan, B ; Grisham, Larry ; Lee, Edward ; Lee, Richard ; Olson, Craig et al.
One approach to heat a target to "Warm Dense Matter" conditions (similar, for example, to the interiors of giant planets or certain stages in Inertial Confinement Fusion targets), is to use intense ion beams as the heating source. By consideration of ion beam phase space constraints, both at the injector, and at the final focus, and consideration of simple equations of state, approximate conditions at a target foil may be calculated. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.2568
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8.
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9.
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Numerical Studies of Electromagnetic Instabilities in Intense Charged Particle Beams with Large Energy Anisotropy
/ Startsev, Edward ; Davidson, Ronald C ; Lee, Wei-li
In intense charged particle beams with large energy anisotropy, free energy is available to drive transverse electromagnetic Weibel-type instabilities. Such slow-wave transverse electromagnetic instabilities can be described by the so-called Darwin model, which neglects the fast-wave portion of the displacement current. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3780
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10.
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A Fast Faraday Cup for the Neutralized Drift Compression Experiment
/ Sefkow, Adam ; Bieniosek, Frank ; Coleman, Joshua E ; Davidson, Ronald C ; Efthimion, Philip ; Eylon, Shmuel ; Gilson, Erik P ; Greenway, Wayne ; Henestroza, Enrique ; Kwan, Joe W et al.
Heavy ion drivers for high energy density physics applications and inertial fusion energy use space-charge-dominated beams which require longitudinal bunch compression in order to achieve sufficiently high beam intensity at the target. The Neutralized Drift Compression Experiment-1A (NDCX-1A) at Lawrence Berkeley National Laboratory (LBNL) is used to determine the effective limits of neutralized drift compression. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3765
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