Number of the records: 1
Characterization of edge and scrape-off layer fluctuations using the fast Li-BES system on COMPASS
- 1.
SYSNO ASEP 0522779 Document Type J - Journal Article R&D Document Type The record was not marked in the RIV Subsidiary J Článek ve WOS Title Characterization of edge and scrape-off layer fluctuations using the fast Li-BES system on COMPASS Author(s) Bencze, A. (HU)
Berta, M. (HU)
Buzássyová, K. (SK)
Háček, Pavel (UFP-V) RID, ORCID
Krbec, Jaroslav (UFP-V)
Szutyányi, M. (HU)Number of authors 6 Article number 085014 Source Title Plasma Physics and Controlled Fusion. - : Institute of Physics Publishing - ISSN 0741-3335
Roč. 61, č. 8 (2019)Number of pages 12 s. Language eng - English Country GB - United Kingdom Keywords intermittency ; Li-BES ; SOL filaments R&D Projects GA16-25074S GA ČR - Czech Science Foundation (CSF) LM2015045 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) UT WOS 000507472300004 EID SCOPUS 85064092310 DOI 10.1088/1361-6587/ab24a0 Annotation Recently the Lithium-Beam Emission Spectroscopy (Li-BES) system on COMPASS has reached its full diagnostic power in terms of routine automatic operation in any kind of plasma scenarios and it is normally used as a standard tool for reconstruction of ultra fast density profiles in the edge region of COMPASS plasmas. The purpose of this study is to investigate the advantages and limitations of the COMPASS Li-BES system in characterizing plasma electron density fluctuations. We show how the atomic physics of plasma-beam interactions can affect the interpretation of the measurement at different radial positions and for different electron density profiles. We also demonstrate the usability of generalized sequential probability ratio test for automatic event detection. Using non-perturbative diagnostic, we verify the validity of the stochastic Garcia-model for scrape-off layer filaments and accompanying holes (density deficits). Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2020
Number of the records: 1