Author: Yamaguchi, S.
Paper Title Page
TUPO074 Design and Fabrication of KEK Superconducting RF Gun #2 510
 
  • T. Konomi, Y. Honda, E. Kako, Y. Kobayashi, S. Michizono, T. Miyajima, H. Sakai, K. Umemori, S. Yamaguchi, M. Yamamoto
    KEK, Ibaraki, Japan
  
  Su­per­con­duct­ing RF gun can re­al­ize high ac­cel­er­a­tion volt­age and high beam rep­e­ti­tion. KEK has been de­vel­op­ing the 1.3 GHz el­lip­ti­cal type 1.5 cell su­per­con­duct­ing RF gun to in­ves­ti­gate fun­da­men­tal per­for­mance. A sur­face clean­ing method and tools are de­vel­oped by using KEK SR­F­GUN #1 and high sur­face peak gra­di­ent 75 MV/m was achieved with­out field emis­sion. SR­F­GUN #2 which equips the he­lium jacket and can be op­er­ated with elec­tron beam was de­signed based on the SR­F­GUN #1. It can be op­er­ated with trans­mit type pho­to­cath­ode which in­clude su­per­con­duct­ing trans­par­ent ma­te­r­ial. The cath­ode plug is cooled by ther­mal con­duct­ing from the 2 K he­lium jacket and pho­to­cath­ode will be kept around 2K to main­tain su­per­con­duc­tiv­ity. Bulk nio­bium pho­to­cath­ode plug and sub­strate will used for the fun­da­men­tal per­for­mance test. In par­al­lel, the pho­to­cath­ode de­po­si­tion cham­ber for multi-al­kali pho­to­cath­ode will be pre­pared.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-TUPO074  
About • paper received ※ 12 September 2018       paper accepted ※ 20 September 2018       issue date ※ 18 January 2019  
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