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Long-pulse Beam Stability in the DARHT-II Linear-induction Accelerator
/ Ekdahl, Carl (LANL, Los Alamos, New Mexico) ; Abeyta, E Orlando (LANL, Los Alamos, New Mexico) ; Aragon, Paul (LANL, Los Alamos, New Mexico) ; Archuleta, Rita (LANL, Los Alamos, New Mexico) ; Bartsch, Richard (LANL, Los Alamos, New Mexico) ; Bender, Howard (Bechtel Nevada, Los Alamos, New Mexico) ; Briggs, Richard J (SAIC, Alamo, California) ; Broste, William (Bechtel Nevada, Los Alamos, New Mexico) ; Carlson, Carl (Bechtel Nevada, Los Alamos, New Mexico) ; Chan, Kwok-Chi Dominic (LANL, Los Alamos, New Mexico) et al.
2006 - 3 p.
External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.2946
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Technological Improvements in the DARHT II Accelerator Cells
/ Prichard, Benjamin A ; Barraza, Juan ; Bieniosek, Frank ; Briggs, Richard J ; Chow, Ken ; Fawley, William M ; Genoni, Thomas E ; Henestroza, Enrique ; Hughes, Thomas P ; Kang, Mike et al.
DARHT employs two perpendicular electron Linear Induction Accelerators to produce intense, bremsstrahlung x-ray pulses for flash radiography. The second axis, DARHT II, features an 18 MeV, 2-kA, 2-microsecond accelerator. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.169
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Electromagnetic Simulations of Helical-Based Ion Acceleration Structures
/ Nelson, Scott D ; Briggs, Richard J ; Caporaso, George ; Friedman, Alex ; Poole, Brian R ; Waldron, William
Helix structures have been proposed* for accelerating low energy ion beams using MV/m fields in order to increase the coupling effeciency of the pulsed power system and to tailor the electromagnetic wave propagation speed with the particle beam speed as the beam gains energy. Calculations presented here show the electromagnetic field as it propagates along the helix structure, field stresses around the helix structure (for voltage breakdown determination), optimizations to the helix and driving pulsed power waveform, and simulations showing test particles interacting with the simulated time varying fields..
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.2485
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Extraction Compression and Acceleration of High Line Charge Density Ion Beams
/ Henestroza, Enrique ; Briggs, Richard J ; Grote, D P ; Peters, Craig ; Yu, Simon
HEDP applications require high line charge density ion beams. An efficient method to obtain this type of beams is to extract a long pulse, high current beam from a gun at high energy, and let the beam pass through a decelerating field to compress it [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.2032
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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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DARHT-II Long-Pulse Beam-Dynamics Experiments
/ Ekdahl, Carl ; Abeyta, E O ; Bartsch, Richard ; Bender, Howard ; Briggs, Richard J ; Broste, William ; Carlson, Carl ; Caudill, Larry ; Chan, Kwok-Chi D ; Chen Yu Jiuan et al.
When completed, the DARHT-II linear induction accelerator (LIA) will produce a 2-kA, 18-MeV electron beam with more than 1500-ns current/energy "flat-top." In initial tests DARHT-II has already accelerated beams with current pulse lengths from 500-ns to 1200-ns full-width at half maximum (FWHM) with more than1.2-kA, 12.5-MeV peak current and energy. Experiments are now underway with a ~2000-ns pulse length, but reduced current and energy. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.19
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