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Very long pulse high-RF power test of a lower hybrid frequency antenna module

Abstract

Outgassing, induced by very long RF waves injection at high power density was studied in a module, able to be used for a lower hybrid frequency antenna. Good RF properties of the module are reported, however, resonance phenomena with strong absorption of RF power (15%) was observed at high temperature (T>400 deg C). A large outgassing data base is provided by the 75 shots cumulating 27 hours of RF injection. The comparison with previous experiments (Tore Supra and TdV prototype modules) confirm the effect of baking and results are consistent. Outgassing increases exponentially with -1/T, and a desorption model with an activation energy Ed {approx} 0.35 eV fits the data up to 400 deg C. In order to design vacuum pumping system for large lower hybrid frequency antenna, outgassing rates are given for different working temperatures. (author). 11 refs., 55 figs.
Authors:
Goniche, M; Brossaud, J; Barral, C; Berger-By, G; Bibet, Ph; Poli, S; Rey, G; Tonon, G; [1]  Seki, M; Obara, K [2] 
  1. Association Euratom-CEA, Centre d`Etudes Nucleaires de Cadarache, 13 - Saint-Paul-lez-Durance (France). Dept. de Recherches sur la Fusion Controlee
  2. Japan Atomic Energy Research Inst., Naka, Ibaraki (Japan). Naka Fusion Research Establishment; and others
Publication Date:
Mar 01, 1994
Product Type:
Technical Report
Report Number:
EUR-CEA-FC-1511
Reference Number:
SCA: 700350; PA: AIX-28:016543; EDB-97:031459; SN: 97001732128
Resource Relation:
Other Information: PBD: Mar 1994
Subject:
70 PLASMA PHYSICS AND FUSION; LOWER HYBRID CURRENT DRIVE; DEGASSING; TOKAMAK DEVICES; ANTENNAS; RADIOWAVE RADIATION; RF SYSTEMS; VACUUM PUMPS
OSTI ID:
425007
Research Organizations:
Association Euratom-CEA, Centre d`Etudes Nucleaires de Cadarache, 13 - Saint-Paul-lez-Durance (France). Dept. de Recherches sur la Fusion Controlee
Country of Origin:
France
Language:
English
Other Identifying Numbers:
Other: ON: TI97613563; TRN: FR9601624016543
Availability:
INIS; OSTI as TI97613563
Submitting Site:
FRN
Size:
[94] p.
Announcement Date:

Citation Formats

Goniche, M, Brossaud, J, Barral, C, Berger-By, G, Bibet, Ph, Poli, S, Rey, G, Tonon, G, Seki, M, and Obara, K. Very long pulse high-RF power test of a lower hybrid frequency antenna module. France: N. p., 1994. Web.
Goniche, M, Brossaud, J, Barral, C, Berger-By, G, Bibet, Ph, Poli, S, Rey, G, Tonon, G, Seki, M, & Obara, K. Very long pulse high-RF power test of a lower hybrid frequency antenna module. France.
Goniche, M, Brossaud, J, Barral, C, Berger-By, G, Bibet, Ph, Poli, S, Rey, G, Tonon, G, Seki, M, and Obara, K. 1994. "Very long pulse high-RF power test of a lower hybrid frequency antenna module." France.
@misc{etde_425007,
title = {Very long pulse high-RF power test of a lower hybrid frequency antenna module}
author = {Goniche, M, Brossaud, J, Barral, C, Berger-By, G, Bibet, Ph, Poli, S, Rey, G, Tonon, G, Seki, M, and Obara, K}
abstractNote = {Outgassing, induced by very long RF waves injection at high power density was studied in a module, able to be used for a lower hybrid frequency antenna. Good RF properties of the module are reported, however, resonance phenomena with strong absorption of RF power (15%) was observed at high temperature (T>400 deg C). A large outgassing data base is provided by the 75 shots cumulating 27 hours of RF injection. The comparison with previous experiments (Tore Supra and TdV prototype modules) confirm the effect of baking and results are consistent. Outgassing increases exponentially with -1/T, and a desorption model with an activation energy Ed {approx} 0.35 eV fits the data up to 400 deg C. In order to design vacuum pumping system for large lower hybrid frequency antenna, outgassing rates are given for different working temperatures. (author). 11 refs., 55 figs.}
place = {France}
year = {1994}
month = {Mar}
}