Experimentally determined profiles of fast wave current drive on DIII-D

Journal Article · Thu Feb 01 04:00:00 EST 1996 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.49575· OSTI ID:284130

Forest, C B; Petty, C C; Baity, F W; Chiu, S C; deGrassie, J S; Groebner, R J; Ikezi, H; Jaeger, E F; Kupfer, K; Murakami, M; Pinsker, R I; Prater, R; Rice, B W; Wade, M R; Whyte, D G ^[1]

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1. General Atomics, San Diego, California 92186 (United States)

Profiles of non-inductive current driven by fast waves have been determined for reversed-shear DIII-D discharges. Both the current profile and toroidal electric field profile are determined from time sequences of equilibrium reconstructions [C. B. Forest {ital et} {ital al}., Phys. Rev. Lett. {bold 73}, 2224 (1994)]. Using this information, the measured current profile has been separated into inductive and non-inductive portions. By comparing similar discharges with co and counter antenna phasings and similar fast wave power, the portion of the total non-inductive current driven by fast waves was determined. The experimentally determined profiles of FWCD are in general agreement with theoretical predictions. Specifically, 135 kA was driven by 1.4 MW of rf power with a profile peaked inside {rho}=2. {copyright} {ital 1996 American Institute of Physics.}

• Research Organization: General Atomics
• Sponsoring Organization: USDOE
• DOE Contract Number: AC03-89ER51114; AC05-84OR21400; W-7405-ENG-48
• OSTI ID: 284130
• Report Number(s): CONF-9505105--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 355; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANTENNAS
CURRENT DENSITY
CURRENT-DRIVE HEATING
ELECTRON TEMPERATURE
NON-INDUCTIVE CURRENT DRIVE
REACTOR SAFETY
SHEAR
TOKAMAK DEVICES