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Simultaneous poloidal measurements using new magnetically driven reciprocating probes in COMPASS
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SYSNO ASEP 0468297 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Simultaneous poloidal measurements using new magnetically driven reciprocating probes in COMPASS Author(s) Dejarnac, Renaud (UFP-V) RID, ORCID
Gunn, J. P. (FR)
Dimitrova, Miglena (UFP-V) ORCID
Hron, Martin (UFP-V) RID, ORCID
Pánek, Radomír (UFP-V) RID
Pascal, J.-Y. (FR)
Saragosti-Chausy, C. (FR)
Tamain, P. (FR)Article number 012017 Source Title Journal of Physics Conference Series, 700. - Bristol : IOP Publishing, Ltd., 2016 - ISSN 1742-6588 Number of pages 7 s. Publication form Print - P Action International Summer School on Vacuum, Electron and Ion Technologies (VEIT2015)/19./ Event date 21.09.2015 - 25.09.2015 VEvent location Sozopol Country BG - Bulgaria Event type WRD Language eng - English Country GB - United Kingdom Keywords COMPASS ; scrape-off layer (SOL) Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) Institutional support UFP-V - RVO:61389021 UT WOS 000432421500017 EID SCOPUS 84964900567 DOI 10.1088/1742-6596/700/1/012017 Annotation Particles and heat transport in the scrape-off layer (SOL) of tokamaks is not yet fully understood. COMPASS is a small-size tokamakp where the edge plasma is well diagnosed in view of studying the competition between the parallel and the cross-field transport in the SOL. In order to better characterize SOL dynamics, in particular the poloidal asymmetry of the main parameters’ radial profiles, two new in-situ magnetically driven reciprocating manipulators have been recently installed in COMPASS. These manipulators, the so-called pecker probes, are two additional poloidal measurement points to the existing two (vertical and horizontal) reciprocating manipulators. The pecker probes are located at the low field side of COMPASS at ±47.5o with respect to the outer mid-plane and are equipped with identical tunnel probe heads, providing simultaneous measurements of the ion saturation current density Jsat, the electron temperature Te and the parallel Mach number M// with high temporal resolution. In this paper, a detailed description of the pecker probe system in COMPASS is described and first measurements are presented.
Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2017
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