The Effect of Gas Ion Bombardment on the Secondary Electron Yield of TiN, TiCN and TiZrV Coatings For Suppressing Collective Electron Effects in Storage Rings

Le Pimpec, F. ; /PSI, Villigen ; Kirby, R.E. ; King, F.K. ; Pivi, M. ; /SLAC

Stanford Linear Accelerator Center

关键词: Alloys;    Getters;    Clouds;    Storage Rings;    43 Particle Accelerators;   

DOI  :  10.2172/875817
RP-ID  :  SLAC-PUB-11621
RP-ID  :  AC02-76SF00515
RP-ID  :  875817

美国|英语

来源: UNT Digital Library

【 摘 要 】

In many accelerator storage rings running positively charged beams, ionization of residual gas and secondary electron emission (SEE) in the beam pipe will give rise to an electron cloud which can cause beam blow-up or loss of the circulating beam. A preventative measure that suppresses electron cloud formation is to ensure that the vacuum wall has a low secondary emission yield (SEY). The SEY of thin films of TiN, sputter deposited Non-Evaporable Getters and a novel TiCN alloy were measured under a variety of conditions, including the effect of re-contamination from residual gas.