Use of soft x-ray diagnostic on the COMPASS tokamak for investigations of sawteeth crash neighborhood and of plasma position using fast inversion methods

0436281 - ÚFP 2015 RIV US eng J - Journal Article
Imríšek, Martin - Weinzettl, Vladimír - Mlynář, Jan - Odstrčil, T. - Odstrčil, M. - Ficker, O. - Pinzon, J.R. - Ehrlacher, C. - Pánek, Radomír - Hron, Martin
Use of soft x-ray diagnostic on the COMPASS tokamak for investigations of sawteeth crash neighborhood and of plasma position using fast inversion methods.
Review of Scientific Instruments. Roč. 85, č. 11 (2014), 11E433-11E433. ISSN 0034-6748. E-ISSN 1089-7623.
[Topical Conference on High-Temperature Plasma Diagnostics/20./. Atlanta, 01.06.2014-05.06.2014]
R&D Projects: GA ČR GAP205/10/2055; GA MŠMT(CZ) LM2011021
Institutional support: RVO:61389021
Keywords : Inversion methods * Plasma positions * Sawteeth * Soft X-ray
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 1.614, year: 2014
http://dx.doi.org/10.1063/1.4894528

The soft x-ray diagnostic is suitable for monitoring plasma activity in the tokamak core, e.g., sawtooth instability. Moreover, spatially resolved measurements can provide information about plasma position and shape, which can supplement magnetic measurements. In this contribution, fast algorithms with the potential for a real-time use are tested on the data from the COMPASS tokamak. In addition, the soft x-ray data are compared with data from other diagnostics in order to discuss possible connection between sawtooth instability on one side and the transition to higher confinement mode, edge localized modes and productions of runaway electrons on the other side.
Permanent Link: http://hdl.handle.net/11104/0240082