DocumentCode :
994709
Title :
Development of a 30-kA cable-in-conduit conductor for pulsed poloidal coils
Author :
Takahashi, Y. ; Dresner, L. ; Tsuji, H. ; Tada, E. ; Okuno, K. ; Kato, T. ; Nishi, M. ; Sanada, Y. ; Iida, F. ; Ando, T. ; Shimamoto, S. ; Yasukochi, K.
Author_Institution :
Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken, Japan
Volume :
19
Issue :
3
fYear :
1983
fDate :
5/1/1983 12:00:00 AM
Firstpage :
386
Lastpage :
389
Abstract :
This paper describes designed parameters of a 30-kA cable-in-conduit conductor (JF-30), and the test results of stability margin measured by using a triplex in a conduit. Cross sectional size of JF-30 is 35mm × 35mm and 567 NbTi-Cu-CuNi strands are in a stainless steel conduit whose thickness is 2 mm. Void fraction is 33 % and the designed stability margin is 270 mJ/cc at 5 atm and 7 T. Stability test by a triplex showed a favorable margin, a few hundreds of mJ at 7 T even without helium flow. In addition, the stability was strongly increased when helium flow up to 0.2 g/s was applied. At around 3 atm, we found that the stability margin was mere than 2 J/cc which exceeded the present heater capacity. This resulted in an extension of current range, in which the sample is stable, up to 150 to 200 % when compared to the case without helium flow.
Keywords :
Superconducting magnets, pulsed; Tokamaks, superconducting magnets; Atomic measurements; Conductors; Design optimization; Helium; Niobium compounds; Pulse measurements; Stability analysis; Steel; Superconducting coils; Testing;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1983.1062430
Filename :
1062430
Link To Document :
بازگشت