Cathode Ion Bombardment in RF Photoguns

[摘要] In this paper, we use the method of rapid oscillating field to solve the equation of ion motion in an RF gun. We apply the method to the BNL 1/2-cell SRF photogun and demonstrate that a significant portion of ions produced in the gun can reach the cathode if no special precautions are taken. Also, the paper proposes a simple mitigation recipe that can reduce the rate of ion bombardment.

[发布日期] 2008-09-01

[学科分类] 核物理和高能物理

[关键词] RF SYSTEMS;ELECTRON GUNS;CATHODES;ION MOBILITY;SUPERCONDUCTING CAVITY RESONATORS;MITIGATION