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PROGRESS TOWARD FULLY NONINDUCTIVE, HIGH BETA DISCHARGES IN DIII-D.
M. MURAKAMI
C. KESSEL
DIII-D NATIONAL TEAM.
R. PRATER
J. LOHR
T. W. PETRIE
M. A. MAKOWSKI
L. L. LAO
J. R. FERRON
T. C. LUCE
C. C. PETTY
T. A. CASPER
P. A. POLITZER
R. I. PINSKER
A. M. GAROFALO
K. H. BURRELL
M. R. WADE
T. S. TAYLOR
W. P. WEST
C. M. GREENFIELD
R. J. JAYAKUMAR
E. J. DOYLE
R. V. BUDNY
J. C. DeBOO
J. E. MENARD
H. E. St JOHN
出版
United States. Department of Energy. Oakland Operations Office
, 2003
URL
http://books.google.com.hk/books?id=D03mjwEACAAJ&hl=&source=gbs_api
註釋
OAK-B135 Advanced Tokamak (AT) research in DIII-D focuses on developing a scientific basis for steady-state, high performance operation. For optimal performance, these experiments routinely operate with {beta} above the n = 1 no-wall limit, enabled by active feed-back control. The ideal wall {beta} limit is optimized by modifying the plasma shape, current and pressure profile. Present DIII-D AT experiments operate with f{sub BS} {approx} 50%-60%, with a long-term goal of {approx} 90%. Additional current is provided by neutral beam and electron cyclotron current drive, the latter being localized well away from the magnetic axis ({rho} {approx} 0.4-0.5). Guided by integrated modeling, recent experiments have produced discharges with {beta} {approx} 3%, {beta}{sub N} {approx} 3, f{sub BS} {approx} 55% and noninductive fraction f{sub NI} {approx} 90%. Additional control is anticipated using fast wave current drive to control the central current density.