Cathode Ion Bombardment in RF Photoguns

Pozdeyev,E. ; Kayran, D. ; Litvinenko, V.

Brookhaven National Laboratory

关键词: Cathodes;    Ion Mobility;    43 Particle Accelerators;    Superconducting Cavity Resonators;    Mitigation;   

DOI  :  10.2172/939989
RP-ID  :  BNL--81602-2008-IR
RP-ID  :  DE-AC02-98CH10886
RP-ID  :  939989

美国|英语

来源: UNT Digital Library

【 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.