Statistical properties of ion and electron temperature fluctuations in the edge of the COMPASS tokamak

0556851 - ÚFP 2023 RIV GB eng J - Journal Article
Cipciar, A. - Adámek, Jiří - Horáček, Jan - Cavalier, Jordan - Hron, Martin
Statistical properties of ion and electron temperature fluctuations in the edge of the COMPASS tokamak.
Plasma Physics and Controlled Fusion. Roč. 64, č. 5 (2022), č. článku 055021. ISSN 0741-3335. E-ISSN 1361-6587
R&D Projects: GA ČR(CZ) GA22-03950S; GA MŠMT(CZ) LM2018117; GA MŠMT(CZ) EF16_019/0000768
EU Projects: European Commission(XE) 633053 - EUROfusion
Institutional support: RVO:61389021
Keywords : turbulence * transport * density * turbulence * ion temperature * sol * tokamak * compass * ball-pen probe * L-mode
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 2.2, year: 2022
Method of publishing: Open access
https://iopscience.iop.org/article/10.1088/1361-6587/ac5a0b

This paper presents measurements of the plasma turbulence with an emphasis on the ion temperature fluctuations in comparison to the electron temperature and the ion saturation current fluctuations in the edge of the COMPASS tokamak. The ion temperature values are obtained by using a fast swept ball-pen probe, with temporal resolution up to 10 mu s, accompanied by independent 1 mu s measurements of the electron temperature and ion saturation current. The experimental results obtained for a wide range of line-averaged densities show that statistical properties of the fluctuations are in good agreement with a form of beta or gamma distribution function. In addition, the dependence of the averaged ion and electron temperatures on the line-averaged density is studied in the near and main scrape off layer region.
Permanent Link: https://hdl.handle.net/11104/0341107