Author: Oikawa, H.
Paper Title Page
THPAB081 High-Power Prototype Canon Coupler for APS-U Booster Cavities 3956
 
  • G.J. Waldschmidt, D.J. Bromberek, D. Horan, G. Trento, U. Wienands
    ANL, Lemont, Illinois, USA
  • T. Harada, H. Oikawa, H. Takahashi
    CETD, Tochigi, Japan
  
  The Ad­vanced Pho­ton Source Up­grade (APS-U) plans to achieve a beam cap­ture ef­fi­ciency above 90% at 17 nC bunch charge into the Booster. Due to large beam load­ing at in­jec­tion, the 352-MHz Booster cav­i­ties will be sig­nif­i­cantly de­tuned ne­ces­si­tat­ing ef­fec­tive-power han­dling much greater than the 100kW ef­fec­tive power rat­ing of the pre­sent cou­pler. Canon Elec­tron Tubes & De­vices Co., Ltd. (CETD) has de­signed and built a com­pact cou­pler for the APS-U Booster using a high-power ce­ramic disk win­dow de­sign in ad­di­tion to ac­com­mo­dat­ing sig­nif­i­cant space re­stric­tions and ad­di­tional di­ag­nos­tics and cool­ing re­quire­ments. The cou­pler de­sign was mod­i­fied from an ex­ist­ing 500MHz, 800kW cou­pler that has been in rou­tine op­er­a­tion at KEKB. The APS-U cou­pler has been in­stalled and tested in the high-power 352-MHz test stand at the APS. The de­tails of the de­sign and test­ing of the pro­to­type cou­pler will be re­ported in this paper.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB081  
About • paper received ※ 18 May 2021       paper accepted ※ 28 July 2021       issue date ※ 15 August 2021  
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