Edge plasma study using a fast visible light camera in the COMPASS tokamak

0483894 - ÚFP 2018 RIV NL eng C - Conference Paper (international conference)
Jirman, T. - Peterka, Matěj - Seidl, Jakub - Cavalier, Jordan - Weinzettl, Vladimír - Brochard, F. - Cahyna, Pavel - Harrison, J. - Imríšek, Martin - Kirk, A. - Pánek, Radomír
Edge plasma study using a fast visible light camera in the COMPASS tokamak.
Energy Procedia. Vol. 127. Amsterdam: Elsevier Ltd, 2017 - (Jimenez, G.; Capriotti, L.; Cao, L.), s. 360-368. Elsevier Science. ISSN 1876-6102.
[International Youth Nuclear Congress 2016, IYNC 2016. Hangzhou (CN), 24.07.2016-30.07.2016]
R&D Projects: GA ČR(CZ) GAP205/12/2327; GA ČR(CZ) GA16-25074S; GA ČR(CZ) GA16-24724S; GA ČR(CZ) GA15-10723S; GA MŠMT(CZ) LM2015045
EU Projects: European Commission(XE) 633053 - EUROfusion
Institutional support: RVO:61389021
Keywords : Tokamak * COMPASS * visible light * oscillatory modes * fast camera * plasma diagnostics * RMP
OECD category: Fluids and plasma physics (including surface physics)
http://www.sciencedirect.com/science/article/pii/S1876610217335646

Fast SA5 camera operating in the visible range has been installed on the COMPASS tokamak and used to study oscillations ofvisible light emission at plasma periphery. The work proved capability of the camera to detect several types of oscillatory modesin the COMPASS plasma in the frequency range 500 Hz – 50 kHz, such as sawteeth (~400 Hz), tearing mode (~10 kHz) or geodesicacoustic mode (~30 kHz). Moreover, method for visualising their spatial structure has been proposed and tested on the case of arotating ~10 kHz tearing mode. In addition, the camera has been used as a tool to study time evolution of divertor strike pointsplitting induced by resonant magnetic perturbations.
Permanent Link: http://hdl.handle.net/11104/0279097