NDLI: AC loss measurement of 46 kA-13T Nb/sub 3/Sn conductor for ITER

Content Provider	IEEE Xplore Digital Library
Author	Takahashi, Y. Matsui, K. Nishii, K. Koizumi, N. Nunoya, Y. Isono, T. Ando, T. Tsuji, H. Murase, S. Shimamoto, S.
Copyright Year	2002
Abstract	AC losses of Nb/sub 3/Sn conductor samples with various void fractions for the ITER Central Solenoid Model Coil (CSMC) were measured by using calorimetric and magnetization techniques. The CSMC is designed to generate the magnetic field of 13 T at the operating current of 46 kA. The conductor consists of the multi-stage cable, having 1152 Nb/sub 3/Sn strands, and Incoloy 908 square jacket with circular hole. The strands are coated by chrome plating with 2 /spl mu/m layer. The last sub-cables are wrapped with Inconel tape, having high electric resistivity, to reduce the coupling current loss. The optimum void fraction for pulse coils is obtained from the relation between the coupling time constant and the void fraction. It is indicated that the sub-cable wrapping is very effective in limiting the coupling current between the sub-cables, as expected. The AC losses of the CS Insert were measured in various operating modes. From these obtained results, the validity of conductor design is demonstrated.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1546
Ending Page	1549
Page Count	4
File Size	455905
File Format	PDF
ISSN	10518223
Volume Number	11
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Loss measurement Niobium Magnetic field measurement Conductors Tin Coils Solenoids Magnetization Cable shielding Electric resistance
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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