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Title: High ICRF power in Tore Supra

Abstract

The aim of the ICRF system of Tore Supra is to provide high power to the plasma and to sustain long pulse operation. Good results have been obtained at high power in minority heating at 57 MHz on He(H) plasmas: 10 MW of ICRH alone have been coupled and 12 MW of combined heating (minority ICRH+LH) have been sustained for 2 s. The new lateral bumpers installed on one antenna are very satisfactory for power handling. ICRH experiments in {sup 3}He minority (42 MHz, B{sub 0}=3.7 T) have also been carried out. In particular, 6 MW have been coupled in D plasma. The influence of the {sup 3}He concentration has been studied. There is experimental evidence of electron heating with mode conversion at high concentration (10-20%) of {sup 3}He. Without {sup 3}He, 3 MW have been coupled in FWEH on similar D target plasma. A scan in plasma current has been performed (1.5{yields}1.1 MA). The bootstrap current is estimated. Some edge phenomena are observed: heating of the septum and other parts of the Faraday screen occurs when a cyclotron resonance layer is in front of the lateral protections.

Authors:
; ; ; ; ; ; ; ; ; ; ; ;  [1];  [2]
  1. Association Euratom-CEA sur la Fusion Controlee, CEA-Cadarache, 13108 Saint Paul lez Durance Cedex (France)
  2. TRINITI, Troitsk, Moscow region 142092 (Russian Federation)
Publication Date:
OSTI Identifier:
21210435
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 485; Journal Issue: 1; Conference: 13. topical conference on radio frequency power in plasmas, Annapolis, MD (United States), 12-14 Apr 1999; Other Information: DOI: 10.1063/1.59741; (c) 1999 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ANTENNAS; BOOTSTRAP CURRENT; ELECTRON TEMPERATURE; ELECTRONS; HELIUM 3; ICR HEATING; ION TEMPERATURE; MHZ RANGE; MODE CONVERSION; PLASMA; RF SYSTEMS; TORE SUPRA TOKAMAK

Citation Formats

Nguyen, F., Basiuk, V., Beaumount, B., Becoulet, A., Bergeaud, V., Bibet, P., Bremond, S., Colas, L., Eriksson, L.-G., Froissard, P., Kazarian, F., Ladurelle, L., Martin, G., and Monakhov, I. High ICRF power in Tore Supra. United States: N. p., 1999. Web. doi:10.1063/1.59741.
Nguyen, F., Basiuk, V., Beaumount, B., Becoulet, A., Bergeaud, V., Bibet, P., Bremond, S., Colas, L., Eriksson, L.-G., Froissard, P., Kazarian, F., Ladurelle, L., Martin, G., & Monakhov, I. High ICRF power in Tore Supra. United States. doi:10.1063/1.59741.
Nguyen, F., Basiuk, V., Beaumount, B., Becoulet, A., Bergeaud, V., Bibet, P., Bremond, S., Colas, L., Eriksson, L.-G., Froissard, P., Kazarian, F., Ladurelle, L., Martin, G., and Monakhov, I. Mon . "High ICRF power in Tore Supra". United States. doi:10.1063/1.59741.
@article{osti_21210435,
title = {High ICRF power in Tore Supra},
author = {Nguyen, F. and Basiuk, V. and Beaumount, B. and Becoulet, A. and Bergeaud, V. and Bibet, P. and Bremond, S. and Colas, L. and Eriksson, L.-G. and Froissard, P. and Kazarian, F. and Ladurelle, L. and Martin, G. and Monakhov, I.},
abstractNote = {The aim of the ICRF system of Tore Supra is to provide high power to the plasma and to sustain long pulse operation. Good results have been obtained at high power in minority heating at 57 MHz on He(H) plasmas: 10 MW of ICRH alone have been coupled and 12 MW of combined heating (minority ICRH+LH) have been sustained for 2 s. The new lateral bumpers installed on one antenna are very satisfactory for power handling. ICRH experiments in {sup 3}He minority (42 MHz, B{sub 0}=3.7 T) have also been carried out. In particular, 6 MW have been coupled in D plasma. The influence of the {sup 3}He concentration has been studied. There is experimental evidence of electron heating with mode conversion at high concentration (10-20%) of {sup 3}He. Without {sup 3}He, 3 MW have been coupled in FWEH on similar D target plasma. A scan in plasma current has been performed (1.5{yields}1.1 MA). The bootstrap current is estimated. Some edge phenomena are observed: heating of the septum and other parts of the Faraday screen occurs when a cyclotron resonance layer is in front of the lateral protections.},
doi = {10.1063/1.59741},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 485,
place = {United States},
year = {1999},
month = {9}
}