Original title: Observation of Sawtooth Oscillations in the COMPASS Tokamak
Authors: Imríšek, Martin ; Havlíček, Josef ; Weinzettl, Vladimír ; Mlynář, Jan
Document type: Papers
Conference/Event: Annual Conference of Doctoral Students – WDS 2013 /22./, Praha (CZ), 2013-06-04 / 2013-06-07
Year: 2013
Language: eng
Abstract: The sawtooth instability in tokamak plasmas results in periodic relaxations of the core plasma density and temperature. The physics of sawtooth is still not fully understood. It is predicted that fusion-born alpha particles will lead to long sawteeth. However, longer sawteeth can seed other instabilities which cause further degradation of plasma confinement. This paper provides brief introduction into sawtooth physics and observations of sawtooth instability in COMPASS. Furthermore, evidence of triggering transition to high confinement regime by sawtooth crash is presented
Keywords: COMPASS; Sawtooth; soft-x ray; tokamak
Project no.: LM2011021 (CEP)
Funding provider: GA MŠk
Host item entry: Proceedings of the 22nd Annual Conference of Doctoral Students – WDS 2013 , ISBN 978-80-7378-251-1

Institution: Institute of Plasma Physics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: http://www.mff.cuni.cz/veda/konference/wds/proc/pdf13/WDS13_210_f2_Imrisek.pdf
Original record: http://hdl.handle.net/11104/0229147

Permalink: http://www.nusl.cz/ntk/nusl-170297


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Research > Institutes ASCR > Institute of Plasma Physics
Conference materials > Papers