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Direct measurements of the plasma potential by katsumata-type probes
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SYSNO ASEP 0050420 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Direct measurements of the plasma potential by katsumata-type probes Title Přímé měření potenciálu plazmatu sondami typu Katsumata Author(s) Schrittwieser, R. (AT)
Ionita, C. (AT)
Adámek, Jiří (UFP-V) RID, ORCID
Stöckel, Jan (UFP-V) RID
Brotánková, Jana (UFP-V)
Martines, E. (IT)
Popa, G. (RO)
Costin, C. (RO)
van de Peppel, L. (NL)
Van Oost, G. (BE)Source Title Czechoslovak Journal of Physics. - : Springer - ISSN 0011-4626
Roč. 56, 8 suppl.B (2006), s. 145-150Number of pages 12 kB Publication form CD-ROM - CD-ROM Action Symposium on Plasma Physics and Technology /22nd./ Event date 26.6.2006-29.6.2006 VEvent location Praha Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords toroidal plasma system ; tokamak ; probe diagnostics ; plasma potential Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects KJB100430601 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20430508 - UFP-V (2005-2011) Annotation By taking advantage of the inherent difference between the gyro-radii of ions and electrons in a magnetised plasma, we developed a method to measure the plasma potential directly. The principle is based on the concept of the Katsumata probe. The probe collector is hidden inside a tube which screens an adjustable fraction of the electron flux whereas it lets pass most of the ions. In this paper an arrangement of three Katsumata-type probes with different diameters is used in the edge plasma region of the CASTOR tokamak to investigate the influence of the dimension of the probe. The results show almost no influence of the probe diameter on the values of the plasma potential. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2007
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