Original title: U-probe for the COMPASS Tokamak
Authors: Kovařík, Karel ; Ďuran, Ivan ; Stöckel, Jan ; Seidl, Jakub ; Šesták, David ; Brotánková, J. ; Spolaore, M. ; Martines, E. ; Vianello, N. ; Hidalgo, C. ; Pedrosa, M. A.
Document type: Papers
Conference/Event: WDS 2011 - Annual Conference of Doctoral Students /20./, Prague (CZ), 2011-05-31 / 2011-06-03
Year: 2011
Language: eng
Abstract: A complex electrostatic-magnetic probe diagnostics, baptized as 'U-probe', is being prepared for measurement of properties of the filamentary structures in the edge plasmas of COMPASS tokamak. Probe will be composed of two identical towers. Each tower will house 3 sets of 3D coils, balanced triple probe and six single Langmuir probes each. The design of the probe is based on that of U-probe used on reversed field pinch RFX-mod and our combined electromagnetic probe at TJ-II stellarator. This new COMPASS diagnostic will measure vorticity and longitudial electric current of the plasma filaments. Analysis of the properties and, particularly, the correlation between filament vorticity and its current is expected to shed light into physics of filamentary structures in the tokamak plasma edge. The simulation of the probe surface temperature evolution as a function of expected incident heat loads within the COMPASS edge plasmas is presented.
Keywords: edge plasma; filaments; tokamak
Project no.: CEZ:AV0Z20430508 (CEP), GD202/08/H057 (CEP), 7G09042 (CEP), 7G10072 (CEP), FU07-CT-2007-00060
Funding provider: GA ČR, GA MŠk, GA MŠk, EUROATOM
Host item entry: Proceedings of the 20th Annual Conference of Doctoral Students - WDS 2011 , ISBN 978-80-7378-185-9

Institution: Institute of Plasma Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0209015

Permalink: http://www.nusl.cz/ntk/nusl-112205


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