Author: Ito, T.
Paper Title Page
THPWO029 Beam Loss Monitoring and Mitigation at J-PARC DTL 3824
 
  • T. Maruta
    J-PARC, KEK & JAEA, Ibaraki-ken, Japan
  • K. Futatsukawa, M. Ikegami, T. Miyao
    KEK, Ibaraki, Japan
  • T. Ito, A. Miura
    JAEA/J-PARC, Tokai-mura, Japan
 
  Close radiation survey at the cavity outer surface has indicated a significant beam loss in the first tank of J-PARC DTL (Drift Tube Linac) which has been localized at a certain drift tube. It has motivated us to measure the beam loss at the DTL, and we have installed beam loss monitors of scintillator type at the cavity surface. It is challenging to monitor the beam loss due to low energy of lost particles and shielding by the thick cavity wall. In this paper, we report the results of beam loss measurement and beam loss mitigation tuning using the beam loss monitors.