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Analysis of surface currents on the CTX mesh flux conserver [electronic resource].

Published:
Los Alamos, N.M. : Los Alamos National Laboratory, 1984.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:
Pages: 5 : digital, PDF file
Additional Creators:
Los Alamos National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
The use of discharge cleaning and a mesh structure for the flux conserver have led to hotter, less resistive, spheromak configurations in the CTX experiment. Achievement of these conditions has been accompanied by the appearance of oscillations - most notably seen on magnetic probe signals - that were previously not present. These oscillations are observed both during the sustainment (V/sub gun/ not equal to 0) and the decaying (V/sub gun/ = 0) phases of the discharge and are attributed to the presence of internal kink modes driven by the departure of the plasma current distribution from the Taylor state: j/B = const. Computations suggest that an n-1 mode becomes unstable when j/B increases away from the magnetic axis (sustained spheromak) whereas an n=2 mode becomes unstable for radially decreasing j/B (decaying spheromak). The results reported are from an 80-cm-diameter mesh flux conserver constructed form 0.5''-diameter copper stock. It is of the same oblate rooftop design as used for previous work with a dimension of 40 cm from front to back.
Report Numbers:
E 1.99:la-ur-84-623
E 1.99: conf-840255-14
conf-840255-14
la-ur-84-623
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Other Subject(s):
Note:
Published through SciTech Connect.
02/01/1984.
"la-ur-84-623"
" conf-840255-14"
"DE84007491"
6. US-Japan symposium on compact toroid research, Princeton, NJ, USA, 20 Feb 1984.
Wright, B.L.
Funding Information:
W-7405-ENG-36
View MARC record | catkey: 14748668