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Automatic ELM detection using gSPRT on the COMPASS tokamak
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SYSNO ASEP 0508733 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Automatic ELM detection using gSPRT on the COMPASS tokamak Author(s) Berta, M. (HU)
Szutyanyi, M. (HU)
Bencze, A. (HU)
Hron, Martin (UFP-V) RID, ORCID
Pánek, Radomír (UFP-V) RIDNumber of authors 5 Source Title Fusion Engineering and Design. - : Elsevier - ISSN 0920-3796
Roč. 123, November (2017), s. 950-954Number of pages 5 s. Language eng - English Country NL - Netherlands Keywords edge-localized modes ; elm ; Plasma diagnostics ; COMPASS tokamak ; Automatic detection ; gsprt Subject RIV BL - Plasma and Gas Discharge Physics OECD category Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect) R&D Projects GA16-25074S GA ČR - Czech Science Foundation (CSF) 8D15001 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2015045 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UFP-V - RVO:61389021 UT WOS 000418992000200 EID SCOPUS 85015790618 DOI 10.1016/j.fusengdes.2017.03.025 Annotation This paper contains the description of the generalized Sequential Probability Ratio Test (gSPRT) method used for automatic ELM detection in different diagnostic signals collected on the COMPASS tokamak. After determination of H-mode region based on D-alpha signal in a given shot, ELMs are automatically detected in different diagnostic time traces (e.g. magnetic signals and also in D-alpha signals). The onset time, the maximum location and the peak value, and the duration of each detected ELM is determined. Analyzed diagnostic signals came from different radial positions of the studied plasma volume, thus from arrival times of given ELM into different detectors, the average radial propagation velocity of the ELM event can be also estimated. Comparison of results from gSPRT method with two different, commonly used automatic ELM detection method (threshold technique and correlation based technique) is also reported. (C) 2017 Elsevier B.V. All rights reserved. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2020 Electronic address https://www.sciencedirect.com/science/article/abs/pii/S0920379617302284?via%3Dihub
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