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Title: Power deposition profiles during FW-IBW mode conversion on Tore Supra: Measurements and simulations

Abstract

On/off axis peaked electron power deposition profiles were registered on Tore Supra during FW-IBW mode conversion experiments (B{sub 0}=3.58 T, f=48 MHz, P{sub IC}{<=}2.6 MW) in H+{sup 3}He plasma with inductively or LHCD driven current (I{sub P}=0.8 MA). The profiles were reconstructed using a 'break in slope' and Fourier decomposition techniques for analysis of the electron temperature behavior, measured by a superheterodyne ECE radiometer. The power directly deposited on electrons within r/a<0.5 region was found to depend on the MC layer position and reached 70% of the injected ICRH power. The power deposition profiles were simulated by several numerical tools including 1D 'VICE' and 2D 'ALCYON' full-wave codes and 3D ray-tracing code 'RAYS'. A new approach of coupling the full-wave and ray-tracing numerical descriptions of FW-IBW mode conversion was proposed, producing the best agreement with the measurements.

Authors:
 [1];  [2];  [3]; ; ;  [4]
  1. TRINITI, Troitsk, 142092 (Russian Federation)
  2. Prairie View A and M University, Prairie View, 77446 (United States)
  3. (Russian Federation)
  4. Association EURATOM-CEA sur la Fusion Controlee, F-13108 St. Paul-Lez-Durance (France)
Publication Date:
OSTI Identifier:
21210438
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: 10.1063/1.59721; (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; A CODES; BERNSTEIN MODE; COMPUTERIZED SIMULATION; COUPLING; ELECTRON TEMPERATURE; ELECTRONS; HELIUM 3; ICR HEATING; ION TEMPERATURE; LOWER HYBRID CURRENT DRIVE; MHZ RANGE; MODE CONVERSION; PLASMA; PLASMA DIAGNOSTICS; PLASMA SIMULATION; PLASMA WAVES; R CODES; RF SYSTEMS; TORE SUPRA TOKAMAK

Citation Formats

Monakhov, I., Petrov, Yu., TRINITI, Troitsk, 142092, Basiuk, V., Becoulet, A., and Nguyen, F. Power deposition profiles during FW-IBW mode conversion on Tore Supra: Measurements and simulations. United States: N. p., 1999. Web. doi:10.1063/1.59721.
Monakhov, I., Petrov, Yu., TRINITI, Troitsk, 142092, Basiuk, V., Becoulet, A., & Nguyen, F. Power deposition profiles during FW-IBW mode conversion on Tore Supra: Measurements and simulations. United States. doi:10.1063/1.59721.
Monakhov, I., Petrov, Yu., TRINITI, Troitsk, 142092, Basiuk, V., Becoulet, A., and Nguyen, F. Mon . "Power deposition profiles during FW-IBW mode conversion on Tore Supra: Measurements and simulations". United States. doi:10.1063/1.59721.
@article{osti_21210438,
title = {Power deposition profiles during FW-IBW mode conversion on Tore Supra: Measurements and simulations},
author = {Monakhov, I. and Petrov, Yu. and TRINITI, Troitsk, 142092 and Basiuk, V. and Becoulet, A. and Nguyen, F.},
abstractNote = {On/off axis peaked electron power deposition profiles were registered on Tore Supra during FW-IBW mode conversion experiments (B{sub 0}=3.58 T, f=48 MHz, P{sub IC}{<=}2.6 MW) in H+{sup 3}He plasma with inductively or LHCD driven current (I{sub P}=0.8 MA). The profiles were reconstructed using a 'break in slope' and Fourier decomposition techniques for analysis of the electron temperature behavior, measured by a superheterodyne ECE radiometer. The power directly deposited on electrons within r/a<0.5 region was found to depend on the MC layer position and reached 70% of the injected ICRH power. The power deposition profiles were simulated by several numerical tools including 1D 'VICE' and 2D 'ALCYON' full-wave codes and 3D ray-tracing code 'RAYS'. A new approach of coupling the full-wave and ray-tracing numerical descriptions of FW-IBW mode conversion was proposed, producing the best agreement with the measurements.},
doi = {10.1063/1.59721},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 485,
place = {United States},
year = {1999},
month = {9}
}