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Shirakabe, Y.

Paper Title Page
WEPCH029 Injection and Extraction Orbit of the J-PARC Main Ring 1987
 
  • M. Tomizawa, Y. Kamiya, H. Kobayashi, I. Sakai, Y. Shirakabe
    KEK, Ibaraki
  • S. Machida
    CCLRC/RAL/ASTeC, Chilton, Didcot, Oxon
  
  The J-PARC main ring (MR) accelerates a high intensity proton beam and deliver to the neutrino experimental hall by the fast extraction and to the hadron experimental facility by the slow extraction. The beam from the rapid cycle synchrotron (RCS) is injected by the bunch to bucket transfer into the MR. The MR has two beam dump lines, the first one is used to dump the beam at injection energy and the second one can be used to abort accelerated beam. The beam loss at the injection and extraction is one of the critical issue for high intensity proton accelerators. We report designed injection and extraction orbits and discuss about the beam apertures and the beam loss.