Fast Temperature Fluctuation Measurements in SOL of Tokamak TCV

0322603 - ÚFP 2009 HU eng A - Abstrakt
Horáček, Jan - Nielsen, A.H. - Pitts, R. A. - Zajac, Jaromír - Seidl, Jakub - Garcia, O.E. - Gulejová, B.
Fast Temperature Fluctuation Measurements in SOL of Tokamak TCV.
[Rychlé měření teploty na okraji tokamaku TCV.]
Book of Abstracts of the Workshop on Electric Fields, Turbulence and Self-Organisation in Magnetized Plasmas, Satellite meeting of the 35th EPS Plasma Physics Conference. Budapest: EURATOM-Association, 2008. O2-4.4-O2-4.4. ISBN N.
[Workshop on Electric Fields, Turbulence and Self-Organisation in Magnetized Plasmas, Satellite meeting of the 35th EPS Plasma Physics Conference. 16.062008-17.06.2008, Hersonissos]
Výzkumný záměr: CEZ:AV0Z20430508
Klíčová slova: Tokamak CASTOR * turbulent transport
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
http://www.rmki.kfki.hu/~eftsomp2008/EFTSOMP2008_AbstractBooklet.pdf

A fast scanning assembly has been widely used on the TCV tokamak to insert a probe head equipped with an array of single Langmuir probe tips up to the separatrix at the plasma midplane. Using fast voltage sweeping, we obtain IV-characteristics every 8 μs, allowing measurement of the electron temperature, Te on this timescale. Fast temperature measurement in the SOL is therefore available for the first time in tokamak TCV. We present basic statistics derived from the Te time series obtained at different radii in the SOL plasma. The fast Te capability also probes the SOL response to Edge Localised Modes.

Rychlou reciprokou sondu na tokamaku TCV jsme použili na rychlé rozmítání Langmuirovy sondy. Poprvé na tokamaku TCV jsme tímto proměřili rychlé (120kHz) změny elektronové teploty okrajového plazmatu. Prezentujeme zde základní statistiku této veličiny, její radiální profily během L-modu i během ELMu.
Trvalý link: http://hdl.handle.net/11104/0170805