TY - JOUR
T1 - Development of cryogenic permanent undulators operating around liquid nitrogen temperature
AU - Tanaka, T.
AU - Hara, T.
AU - Bizen, T.
AU - Seike, T.
AU - Tsuru, R.
AU - Marechal, X.
AU - Hirano, H.
AU - Morita, M.
AU - Teshima, H.
AU - Nariki, S.
AU - Sakai, N.
AU - Hirabayashi, I.
AU - Murakami, M.
AU - Kitamura, H.
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2006/11/28
Y1 - 2006/11/28
N2 - The cryogenic permanent magnet undulator (CPMU) is an insertion device in which permanent magnets (PMs) are cooled to a cryogenic temperature to improve magnetic performances in terms of remanence and coercivity. Operation of CPMUs is expected to be much easier than that of existing superconductive undulators (SCUs) with low-temperature superconducting coils, since the operating temperature can be much higher than that of liquid helium. In addition to pure PMs, high-permeability pole pieces and/or high-temperature superconductors (HTSCs) can be exploited to enhance the magnetic field of the CPMU. Towards realization of this concept, a number of R&Ds are in progress at SPring-8: field measurement under a cryogenic environment and reinforcement of HTSC samples. Encouraging results have been obtained from preliminary studies.
AB - The cryogenic permanent magnet undulator (CPMU) is an insertion device in which permanent magnets (PMs) are cooled to a cryogenic temperature to improve magnetic performances in terms of remanence and coercivity. Operation of CPMUs is expected to be much easier than that of existing superconductive undulators (SCUs) with low-temperature superconducting coils, since the operating temperature can be much higher than that of liquid helium. In addition to pure PMs, high-permeability pole pieces and/or high-temperature superconductors (HTSCs) can be exploited to enhance the magnetic field of the CPMU. Towards realization of this concept, a number of R&Ds are in progress at SPring-8: field measurement under a cryogenic environment and reinforcement of HTSC samples. Encouraging results have been obtained from preliminary studies.
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U2 - 10.1088/1367-2630/8/11/287
DO - 10.1088/1367-2630/8/11/287
M3 - Article
AN - SCOPUS:33751535120
SN - 1367-2630
VL - 8
JO - New Journal of Physics
JF - New Journal of Physics
M1 - 287
ER -