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Evolution of electron temperature and density profiles in edge transport barrier in the COMPASS tokamak
- 1.0438886 - ÚFP 2015 CZ eng A - Abstract
Štefániková, Estera - Böhm, Petr - Aftanas, Milan - Bílková, Petra - Weinzettl, Vladimír - Stöckel, Jan - Pánek, Radomír - Scannell, R. - Urban, Jakub - Peterka, Matěj - Imríšek, Martin - Havlíček, Josef
Evolution of electron temperature and density profiles in edge transport barrier in the COMPASS tokamak.
Symposium on Plasma Physics and Technology 2014. Prague: Czech Technical University in Prague, Faculty of Electrical Engineering, 2014.
[SPPT 2014 - 26th Symposium on Plasma Physics and Technology/26./. 16.06.2014-19.06.2014, Prague]
Keywords : COMPASS tokamak * plasma * H-mode
Subject RIV: BL - Plasma and Gas Discharge Physics
High-resolution Thomson scattering system on the COMPASS tokamak (R=0.56 m, a=0.2 m, divertor plasma configuration with ITER-like plasma cross-section) provides electron temperature and density profiles. The spatial resolution in the edge plasma region (~a/100) is optimized for edge transport barrier studies. Formation of characteristic edge profiles (pedestals) is observed during high-confinement mode, i.e. the core electron temperature and density are raised up by the value of pedestal height. Both the Te and ne pedestals are well-fitted by a modified hyperbolic tangent (mtanh) function. In this contribution, a fitting technique of the full radial profiles of electron temperature, density and pressure during H-mode is also described. Electron temperature and density on top of pedestal are statistically processed to find a possible threshold for various types of H-modes.
Permanent Link: http://hdl.handle.net/11104/0242250
Number of the records: 1