3d and r,z particle simulations of Heavy Ion Fusion beams
- Lawrence Livermore National Lab., CA (United States)
- Naval Research Lab., Washington, DC (United States)
The space-charge-dominated beams in a Heavy Ion beam driven inertial Fusion (HIF) accelerator must be focuses onto small (few mm) spots at the fusion target, and so preservation of a small emittance is crucial. The nonlinear beam self-fields can lead to emittance growth; thus, a self-consistent field description is necessary. We have developed a multi-dimensional time-dependent discrete particle simulation code, WARP, and are using it to study the behavior of HIF beams. The code's 3d package combines features of an accelerator code and a particle-in-cell (PIC) plasma simulation. Novel techniques allow it to follow beams through many accelerator elements over long distances and around bends. We have used the code to understand the emittance growth observed in the MBE4 experiment at. Lawrence Berkeley Laboratory (LBL) under conditions of aggressive drift-compression. We are currently applying it to LBL's planned ILSE experiments, and (most recently) to an ESQ injector option being evaluated for ILSE. The code's r, z package is being used to study the axial confinement afforded by the shaped ends of the accelerating pulses, and to study longitudinal instability induced by induction module impedance.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States); Naval Research Lab., Washington, DC (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48; AC03-76SF00098
- OSTI ID:
- 7368438
- Report Number(s):
- UCRL-JC-110201; CONF-9208109--84; ON: DE93013417
- Country of Publication:
- United States
- Language:
- English
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Overview of WARP, a particle code for Heavy Ion Fusion
Overview of WARP, a particle code for heavy ion fusion
Related Subjects
430200 -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700411* -- Inertial Confinement Devices-- (1992-)
ACCELERATORS
BEAM DYNAMICS
BEAM EMITTANCE
BEAMS
COMPUTER CODES
CONFINEMENT
HEAVY ION ACCELERATORS
INERTIAL CONFINEMENT
ION BEAMS
PLASMA CONFINEMENT
PLASMA SIMULATION
SIMULATION
SPACE CHARGE
W CODES