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Fundamental and second harmonic hydrogen fast-wave heating on DIII-D [electronic resource].

Published:
Washington, D.C. : United States. Dept. of Energy, 1991.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:
Pages: (5 pages) : digital, PDF file
Additional Creators:
General Atomic Company, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
Ion cyclotron resonance heating (ICRH) with fast waves has been investigated on D3-D in both the fundamental hydrogen minority (32 MHz, 2.14 T) and second harmonic hydrogen majority (60 MHz, 1.97 T) regimes. The main purpose of these experiments was to characterize the fast wave coupling and propagation in preparation for upcoming fast wave current drive (FWCD) experiments. For the fundamental minority regime, the electron and ion heating, global confinement, and radiated power fraction are compared for ICRH and NBI discharges with P{sub aux} ≈ 1 MW. The ICRH experiments were conducted using a four strap antenna which was designed for current drive experiments. The antenna is fed by a single 2 MW 30--60 MHz transmitter. For ICRH experiments, either (0,0,0,0) or (0,π,0,π) phasing was used. The launched parallel index of refraction for (0,π,0,π) phasing is {vert bar}n∥{vert bar} ≈ 21 at 32 MHz, and {vert bar}n∥{vert bar} ≈ 11 at 60 MHz. 7 refs., 8 figs.
Report Numbers:
E 1.99:ga-a-20693
E 1.99: conf-910869--25
conf-910869--25
ga-a-20693
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Other Subject(s):
Note:
Published through SciTech Connect.
10/01/1991.
"ga-a-20693"
" conf-910869--25"
"DE92002949"
9. topical conference on radio frequency power in plasmas, Charleston, SC (United States), 19-21 Aug 1991.
Hoffman, D.J.; Petty, C.C.; Bonoli, P.T. . Plasma Fusion Center; Goulding, R.H.; Baity, F.W.; Porkolab, M.; Pinsker, R.I.; Prater, R.; Mayberry, M.J.
Funding Information:
AC03-89ER51114
AC05-84OR21400
View MARC record | catkey: 14746192