Charging test results of the DPC-TJ, a high-current-density large superconducting coil for fusion machines

Author

Ono, M. ; Wachi, Y. ; Shimada, M. ; Sanada, Y. ; Mukai, H. ; Hamajima, T. ; Fujioka, T. ; Nishi, M. ; Tsuji, H. ; Ando, T. ; Hiyama, T. ; Takahashi, Y. ; Yoshida, K. ; Okuno, K. ; Kato, T. ; Nakajima, H. ; Kawano, K. ; Isono, T. ; Sugimoto, M. ; Koizumi,

Author_Institution

Toshiba Corp., Yokohama, Japan

Volume

3

Issue

1

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

480

Lastpage

483

Abstract

The authors describe the electromagnetic results and the quench phenomena of the DPC-TJ large cable-in-conduit Nb/sub 3/Sn coil experiment which took place in the summer of 1991. The DPC-TJ coil was developed by Toshiba and JAERI in collaboration to demonstrate the realization of (NbTi)/sub 3/Sn superconducting coils for fusion with high average current density of 40 A/mm/sup 2/. The coil was charged up to its rated current of 24 kA (40 A/mm/sup 2/) at 7.6 T without quench in the DPC test facility. Thereafter, the electromagnetic performance was tested by measuring I/sub c/ and T/sub cs/, and the critical current at 12 T was estimated to be 41 kA. The quench phenomena of the DPC-TJ coil were also tested by measuring normal-zone propagation velocity to get the protection design. In these experiments, very slow and very fast propagation were observed. Many other electromagnetic results were also obtained, which are necessary for the design of fusion machines such as International Thermonuclear Experimental Reactor.<>

Keywords

fusion reactor materials; superconducting magnets; DPC test facility; DPC-TJ large cable-in-conduit Nb/sub 3/Sn coil experiment; I/sub c/; International Thermonuclear Experimental Reactor; T/sub cs/; average current density; charging test results; critical current; electromagnetic results; fusion machines; normal-zone propagation velocity; quench phenomena; superconducting coils; Collaboration; Electromagnetic measurements; Electromagnetic propagation; Fusion reactor design; Niobium compounds; Superconducting cables; Superconducting coils; Testing; Tin; Titanium compounds;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.233747

Filename

233747