Author: Nemoto, Y.
Paper Title Page
TUPVA096 Detection of H0 Particles in MEBT2 Chicane of J-PARC Linac 2308
 
  • J. Tamura, H. Ao, T. Maruta, A. Miura, T. Morishita, K. Okabe, M. Yoshimoto
    JAEA/J-PARC, Tokai-mura, Japan
  • K. Futatsukawa, T. Miyao
    KEK, Ibaraki, Japan
  • Y. Nemoto
    Nippon Advanced Technology Co., Ltd., Tokai, Japan
 
  In the Japan Proton Accelerator Research Complex (J-PARC), H0 particles generated by collisions of accelerated H beams with residual gases are considered as one of the key factors of the residual radiation in the high energy accelerating section of the linac. To diagnose the H0 particles, the new beam line for analyzing H0 and H particles was installed in the second medium energy beam transport (MEBT2), which is the matching section from the separated-type drift tube linac (SDTL) to the annular-ring coupled structure linac (ACS). The analysis line consists of four dipole magnets for giving the H beam chicane orbit, and a wire scanner monitor (WSM) for measuring the horizontal shift of the H beam. To detect the H0 particles, a carbon plate is installed to the WSM. In the beam commissioning, we detected the signals of H0 particles penetrating the plate and observed the transition of the signal with various vacuum condition in the SDTL section.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPVA096  
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