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

Abstract

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.

Authors:
; ; ;  [1]; ;  [2]; ; ;  [3]
  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)
Publication Date:
Research Org.:
General Atomics, San Diego, CA (United States)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
6099041
Report Number(s):
GA-A-20693; CONF-910869-25
ON: DE92002949
DOE Contract Number:  
AC03-89ER51114; AC05-84OR21400
Resource Type:
Conference
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
Subject:
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-)

Citation Formats

Petty, C C, Pinsker, R I, Mayberry, M J, Prater, R, Porkolab, M, Bonoli, P T, Baity, F W, Goulding, R H, and Hoffman, D J. Fundamental and second harmonic hydrogen fast-wave heating on DIII-D. United States: N. p., 1991. Web.
Petty, C C, Pinsker, R I, Mayberry, M J, Prater, R, Porkolab, M, Bonoli, P T, Baity, F W, Goulding, R H, & Hoffman, D J. Fundamental and second harmonic hydrogen fast-wave heating on DIII-D. United States.
Petty, C C, Pinsker, R I, Mayberry, M J, Prater, R, Porkolab, M, Bonoli, P T, Baity, F W, Goulding, R H, and Hoffman, D J. Tue . "Fundamental and second harmonic hydrogen fast-wave heating on DIII-D". United States. https://www.osti.gov/servlets/purl/6099041.
@article{osti_6099041,
title = {Fundamental and second harmonic hydrogen fast-wave heating on DIII-D},
author = {Petty, C C and Pinsker, R I and Mayberry, M J and Prater, R and Porkolab, M and Bonoli, P T and Baity, F W and Goulding, R H and Hoffman, D J},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/6099041}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {10}
}

Conference:
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