Author: Takahashi, T.
Paper Title Page
TUPAB015 Beam Loading Compensation of APS Cavity with Off-Crest Acceleration in ILC e-Driven Positron Source 1368
 
  • M. Kuriki, S. Konno, H. Nagoshi
    HU/AdSM, Higashi-Hiroshima, Japan
  • T. Omori, J. Urakawa, K. Yokoya
    KEK, Ibaraki, Japan
  • T. Takahashi
    Hiroshima University, Graduate School of Science, Higashi-Hiroshima, Japan
  
  In E-Dri­ven positron source of ILC, the gen­er­ated positron is cap­tured by RF ac­cel­er­a­tor by APS cav­ity. The positron is ini­tially placed at the de­cel­er­a­tion phase and grad­u­ally slipped down to ac­cel­er­a­tion phase. Be­cause the beam-load­ing is ex­pected to be more than 1A with a multi-bunch for­mat, the com­pen­sa­tion is es­sen­tial to ob­tain uni­form in­ten­sity over the pulse. A con­ven­tional method for the com­pen­sa­tion is con­trol­ling the tim­ing, but it doesn’t work in off-crest case. In this man­u­script, we dis­cuss the com­pen­sa­tion with the phase and am­pli­tude mod­u­la­tion on the input RF.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB015  
About • paper received ※ 19 May 2021       paper accepted ※ 27 July 2021       issue date ※ 26 August 2021  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)