Simulating electron effects in heavy-ion accelerators with solenoid focusing

W M Sharp,P K Roy,A W Molvik,D P Grote,R H Cohen,J.-L Vay,J E Coleman,P A Seidl,A Friedman

doi:10.1109/pac.2007.4440506

Simulating electron effects in heavy-ion accelerators with solenoid focusing

W M Sharp, P K Roy + Show 7 more

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https://doi.org/10.1109/pac.2007.4440506

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Publication Date: Jan 1, 2007

Affiliation: Lawrence Livermore National Security, University of California, Berkeley, University of Maryland, College Park

#Lawrence Berkeley National Laboratory #Code WARP + Show 8 more

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Abstract

Contamination from electrons is a concern for solenoid-focused ion accelerators being developed for experiments in high-energy-density physics. These electrons, produced directly by beam ions hitting lattice elements or indirectly by ionization of desorbed neutral gas, can potentially alter the beam dynamics, leading to a time-varying focal spot, increased emittance, halo, and possibly electron-ion instabilities. The electrostatic particle-in-cell code WARP is used to simulate electron-cloud studies on the solenoid-transport experiment (STX) at Lawrence Berkeley National Laboratory. We present self-consistent simulations of several STX configurations and compare the results with experimental data in order to calibrate physics parameters in the model.

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