Fundamental and second harmonic hydrogen fast-wave heating on DIII-D

Conference · Tue Oct 01 00:00:00 EDT 1991

OSTI ID:6099041

Petty, C C; Pinsker, R I; Mayberry, M J; Prater, R ^[1]; Porkolab, M; Bonoli, P T ^[2]; Baity, F W; Goulding, R H; Hoffman, D J ^[3]

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1. General Atomics, San Diego, CA (United States)
2. Massachusetts Inst. of Tech., Cambridge, MA (United States). Plasma Fusion Center
3. Oak Ridge National Lab., TN (United States)

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} {approx} 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,{pi},0,{pi}) phasing was used. The launched parallel index of refraction for (0,{pi},0,{pi}) phasing is {vert bar}n{parallel}{vert bar} {approx} 21 at 32 MHz, and {vert bar}n{parallel}{vert bar} {approx} 11 at 60 MHz. 7 refs., 8 figs.

• Research Organization: General Atomics, San Diego, CA (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-89ER51114; AC05-84OR21400
• OSTI ID: 6099041
• Report Number(s): GA-A-20693; CONF-910869-25; ON: DE92002949
• Resource Relation: Conference: 9. topical conference on radio frequency power in plasmas, Charleston, SC (United States), 19-21 Aug 1991
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DOUBLET-3 DEVICE
ICR HEATING
HARMONICS
NEUTRAL ATOM BEAM INJECTION
BEAM INJECTION
CLOSED PLASMA DEVICES
HEATING
HIGH-FREQUENCY HEATING
OSCILLATIONS
PLASMA HEATING
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
700350* - Plasma Production
Heating
Current Drive
& Interactions- (1992-)