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Hayashi, N.

Paper Title Page
TUP020 The J-PARC L3BT Monitor System for RCS Injection 290
 
  • S. Lee, Z. Igarashi, M. Ikegami, T. Toyama
    KEK, Ibaraki
  • H. Akikawa, T. Ohkawa
    JAEA, Ibaraki-ken
  • N. Hayashi, S. H. Hiroki
    JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken
  • S. Sato, T. Tomisawa, A. Ueno
    JAEA/LINAC, Ibaraki-ken
  
  The J-PARC linac-3GeV rapid cycling synchrotron (RCS) beam transport line (L3BT) monitor system will be used to tune the intensity of 5mA-50mA linac beam. The monitor system is composed of BPMs and multi wire profile scanners (MWPS) in L3BT line and RCS injection area. A non-destructive beam momentum spread monitor using a 4-stripline pickups is also developed in order to measure and control the momentum spread of linac beams. The spatial resolution of less than 0.3mm and momentum spread of less than 0.1% is required for RCS injection to avoid uncontrolled beam losses. In this paper, beam position monitor, profile monitor and momentum spread measurement for J-PARC linac is described. Preliminary results of beam size and m value measurement with quadrupole mode of the signal of 4-stripline BPMs in the KEK MEBT1 are also discussed.