scholarly journals Design studies of heavy ion linear accelerators constructed of independently phased spiral resonators

1975 ◽  
Author(s):  
R.H. Stokes ◽  
D.D. Armstrong
Keyword(s):  
Heavy Ion ◽  
Linear Accelerators ◽  
Design Studies

scholarly journals DESIGN STUDIES OF PROTON LINEAR ACCELERATORS

1963 ◽  
Author(s):  
D E Young ◽  
R S Christian ◽  
C D Curtis ◽  
T W Edwards ◽  
F J Kriegler ◽  
...  
Keyword(s):  
Linear Accelerators ◽  
Design Studies

scholarly journals Simulations of longitudinal instabilities in ion induction linear accelerators

1992 ◽  
Vol 10 (3) ◽  
pp. 511-529 ◽  
Author(s):  
Stanley Humphries
Keyword(s):  
Space Charge ◽  
Transmission Lines ◽  
Axial Velocity ◽  
Cell Model ◽  
Heavy Ion ◽  
Velocity Spread ◽  
Continuous Systems ◽  
Linear Accelerators ◽  
Simulation Code ◽  
Heavy Ion Fusion

This article describes computer simulations of a longitudinal instability that affects induction linear accelerators for high-power ion beams. The instability is driven by axial bunching of ions when they interact with acceleration gaps connected to input transmission lines. The process is similar to the longitudinal resistive wall instability in continuous systems. Although bunching instabilities do not appear in existing induction linear accelerators for electrons, they may be important for proposed ion accelerators for heavy ion fusion. The simulation code is a particle-in-cell model that describes a drifting beam crossing discrete acceleration gaps with a self-consistent calculation of axial space charge forces. In present studies with periodic boundaries, the model predicts values for quantities such as the stabilizing axial velocity spread that are in good agreement with analytic theories. The simulations describe the nonlinear growth of the instability and its saturation with increased axial emittance. They show that an initially cold beam is subject to a severe disruption that drives the emittance well above the stabilized saturation levels. The simulation results confirm that axial space charge forces do not reduce axial beam bunching. In fact, space charge effects increase the axial velocity spread required for stability. With simple resistive driving circuits, the model predicts velocity spreads that are too high for heavy ion fusion applications. Several processes currently under study may mitigate this result, including advanced pulsed power switching methods, enhanced gap capacitance, and an energy spread impressed between individual beams of a multibeam transport system.

scholarly journals Two Design Options for Compact Linear Accelerators for High Flux Neutron Source

2021 ◽  
Vol 12 (1) ◽  
pp. 386
Author(s):  
Xiaowen Zhu ◽  
Claude Marchand ◽  
Olivier Piquet ◽  
Michel Desmons
Keyword(s):  
Neutron Source ◽  
Materials Science ◽  
Optimized Design ◽  
Linear Accelerators ◽  
Fundamental Physics ◽  
Design Studies ◽  
Societal Challenges ◽  
Initial Stage ◽  
Design Options ◽  
Better Than

We describe and compare two optimized design options of RF linear accelerators with different resonant frequencies at 162.5 MHz (f0) and 325 MHz (2∙f0). The RFQ + DTL linacs have been designed to provide 13 MeV acceleration to a proton beam for achieving a fast neutron yield of not lower than 1013 n/s via 9Be(p, n)9B reaction in pulsed-mode operation. Our design studies show that none of the two options is better than the other, but that the choice of operating frequency will mainly be determined by the accelerator length and RF cost consideration. This study can serve as a basis for the design of an initial stage of a new high brilliance Compact Accelerator-driven Neutron Source (CANS), aiming to use neutron scattering techniques for studying material properties in fundamental physics, materials science, nuclear energy, as well as for industries and societal challenges.

Design studies of the 2 MeV heavy ion beam probe for TEXT upgrade

2003 ◽  
Author(s):  
J. Schwelberger ◽  
P.M. Schoch ◽  
R.L. Hickok ◽  
T.P. Crowley ◽  
K.A. Connor ◽  
...  
Keyword(s):  
Ion Beam ◽  
Heavy Ion ◽  
Design Studies ◽  
Heavy Ion Beam ◽  
Heavy Ion Beam Probe
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