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Content Provider | IEEE Xplore Digital Library |
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Author | Takahashi, H. Agari, K. Hirose, E. Ieiri, M. Katoh, Y. Minakawa, M. Muto, R. Naruki, M. Noumi, H. Sato, Y. Sawada, S. Shirakabe, Y. Suzuki, Y. Takasaki, M. Tanaka, K.H. Toyoda, A. Watanabe, H. Yamanoi, Y. Saitoh, Y. Satoh, Y. Yahata, K. |
Copyright Year | 2002 |
Abstract | This paper reports developments of indirectly cooled radiation-resistant magnet coils, which can be loaded with 2000-A dc. This current capacity is required for the most upstream magnets of a new high-momentum beam line to be constructed in the future extension of the J-PARC hadron experimental facility. Indirectly cooled coils using solid-conductor-type mineral insulation cables (MICs) and stainless-steel water pipes were adopted to achieve high radiation hardness. MICs were sandwiched by independent cooling water pipes and stacked in a casing, and the entire coil assembly was filled with solder. However, the maximum load applied to the indirectly cooled MIC coils was limited to 1000-A dc, mainly owing to a heat problem at the end parts of the coils. In pursuit of the required current capability, we have carried out load tests using a test sample of the end parts, which consists of MIC current leads and a copper bus bar connecting the MIC conductors, instead of a whole MIC coil. By improving the structure of the end parts, we have succeeded to operate the test piece stably with 2000-A dc in a vacuum. |
Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
Starting Page | 1 |
Ending Page | 4 |
Page Count | 4 |
File Size | 898236 |
File Format | |
ISSN | 10518223 |
Volume Number | 26 |
Issue Number | 4 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2016-01-01 |
Publisher Place | U.S.A. |
Access Restriction | One Nation One Subscription (ONOS) |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Superconducting magnets Coils Microwave integrated circuits Conductors Temperature measurement Magnetic separation Radiation-resistant magnet Conventional accelerator magnet High-intensity accelerator High-intensity beam lines radiation-resistant magnet high-intensity accelerator high-intensity beam lines |
Content Type | Text |
Resource Type | Article |
Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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