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SNS Warm Linac Circulator Breakdown Considerations for the PPU Project...

by George D Toby, Yoon W Kang, Sang-ho Kim, Sung-woo Lee, John S Moss
Publication Type
Conference Paper
Book Title
Proceedings of the 12th International Particle Accelerator Conference
Publication Date
Page Numbers
1041 to 1043
Publisher Location
Conference Name
12th International Particle Accelerator Conference (IPAC)
Conference Location
Virtual Format, Brazil
Conference Sponsor
Conference Date

Multipacting in accelerating structures is a complex phenomenon about which there is much to be understood. While multipacting research efforts have primarily been focused on superconducting radio frequency (SRF) systems, normal conducting accelerating structures which have a higher thermal capacity, and a greater vacuum pressure tolerance could benefit from additional investigation. This research details multipacting simulation methods and the results of 3-D electromagnetic simulations of RF vacuum windows used on normal conducting linac (NCL) cavities. Benchmarking of the peak electric fields in these structures, benefits of material processing and possible techniques for reducing or eliminating multipacting activities are discussed.