First experimental results on the IShTAR testbed

R. D'Inca, J. Jacquot, R. Ochoukov, I. Morgal, K. Crombe, F. Louche, D. Van Eester, S. Heuraux, S. Devaux, J. Moritz, E. Faudot, H. Fünfgelder, H. Faugel, J. M. Noterdaeme

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdragepeer review

Samenvatting

IShTAR (Ion cyclotron Sheath Test ARrangement) is a linear magnetized plasma test facility dedicated to the investigation of RF wave/plasma interaction [1] in the Ion Cyclotron Range of Frequencies (ICRF). It provides a better accessibility for the instrumentation than tokamaks while being representative of the neighboring region of the wave emitter. It is equipped with a magnetized plasma source (1 m long, 0.4 m diameter) powered by a helical antenna up to 3 kW at 11 MHz. We present the results of the first analysis of the plasma characteristics (plasma density, electron temperature) in function of the operating parameters (injected power, neutral pressure and magnetic field) as measured with fixed and movable Langmuir probes, spectrometer and cameras. The plasma is presently produced only by the helical antenna (no ICRF). We show that the plasma exists in three regime depending on the power level: the first two ones are stable and separated by a jump in density; a first spatial profile of the plasma density has been established for these modes; The third mode is unstable, characterized by strong oscillations of the plasma tube position.

Originele taal-2Engels
TitelRadio Frequency Power in Plasmas
SubtitelProceedings of the 21St Topical Conference
RedacteurenRobert I. Pinsker
UitgeverijAmerican Institute of Physics Inc.
ISBN van elektronische versie9780735413368
DOI's
StatusGepubliceerd - 10 dec. 2015
Evenement21st Topical Conference on Radiofrequency Power in Plasmas - Lake Arrowhead, Verenigde Staten van Amerika
Duur: 27 apr. 201529 apr. 2015

Publicatie series

NaamAIP Conference Proceedings
Volume1689
ISSN van geprinte versie0094-243X
ISSN van elektronische versie1551-7616

Congres

Congres21st Topical Conference on Radiofrequency Power in Plasmas
Land/RegioVerenigde Staten van Amerika
StadLake Arrowhead
Periode27/04/1529/04/15

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