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Tani, Norio; Adachi, Toshikazu*; Someya, Hirohiko*; Watanabe, Yasuhiro; Sato, Hikaru*; Kishiro, Junichi
IEEE Transactions on Applied Superconductivity, 14(2), p.421 - 424, 2004/06
Times Cited Count：13 Percentile：54.64The 3-GeV synchrotron proposed in the JAERI/KEK Joint Project (J-PARC) is a rapid-cycling synchrotron (RCS), which accelerates a high-intensity proton beam from 400-MeV to 3-GeV at a repetition rate of 25-Hz. The 3-GeV synchrotron is used to produce pulsed spallation neutrons and muons. Since the magnets for the 3-GeV synchrotron are required to have a large aperture in order to realize the large beam power of 1 MW, there is a larger fringe field at a pole end than a usual synchrotron magnet. In addition, 25-Hz ac field induces an eddy current in magnet components, magnet end plates and etc. The eddy current induced in the end plates is expected to be large. Therefore, it is important to investigate an effect of large leakage field and eddy current to the beam motion around the magnet end part. We have measured the eddy loss and the eddy field at the edges of the dipole and quadrupole magnets. In this paper, we report the comparison between the results of the measurements and the two-dimensional eddy current model developed for this study.
A.Gilanyi*; Akiba, Masato; Okumura, Yoshikazu; Sugimoto, Makoto; Takahashi, Yoshikazu; Tsuji, Hiroshi
JAERI-Research 99-014, 71 Pages, 1999/03
JAERI-Research-99-014.pdf:3.56MB
no abstracts in English
Koizumi, Koichi; Yamazaki, Kozo*
Purazuma, Kaku Yugo Gakkai-Shi, 72(12), p.1352 - 1361, 1996/12
no abstracts in English
