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

Journal Article · Sat Nov 15 00:00:00 EST 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4894528· OSTI ID:22303718

Imrisek, M. ^[1]; Weinzettl, V.; Mlynar, J.; Panek, R.; Hron, M. ^[1]; Odstrcil, T. ^[2]; Odstrcil, M. ^[3]; Ficker, O. ^[3]; Pinzon, J. R. ^[4]; Ehrlacher, C. ^[5]

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1. Institute of Plasma Physics ASCR, Prague (Czech Republic)
2. Max-Planck-Institut für Plasmaphysik, Garching (Germany)
3. Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Prague (Czech Republic)
4. Institue Jean Lamour, Université de Lorraine, Nancy (France)
5. ENS Cachan, Paris (France)

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.

• OSTI ID: 22303718
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 11; Other Information: (c) 2014 Euratom; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COMPARATIVE EVALUATIONS
COMPASS-D TOKAMAK
EDGE LOCALIZED MODES
MONITORING
PLASMA
PLASMA CONFINEMENT
PLASMA DIAGNOSTICS
RUNAWAY ELECTRONS
SAWTOOTH OSCILLATIONS
SOFT X RADIATION