Počet záznamů: 1
Studies of runaway electrons via Cherenkov effect in tokamaks
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SYSNO ASEP 0508698 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Studies of runaway electrons via Cherenkov effect in tokamaks Tvůrce(i) Zebrowski, J. (PL)
Jakubowski, L. (PL)
Rabinski, M. (PL)
Sadowski, M. J. (PL)
Jakubowski, M.J. (PL)
Kwiatkowski, R. (PL)
Malinowski, K. (PL)
Mirowski, R. (PL)
Mlynář, Jan (UFP-V) RID
Ficker, Ondřej (UFP-V) ORCID
Weinzettl, Vladimír (UFP-V) RID, ORCID
Causa, F. (IT)Celkový počet autorů 12 Číslo článku 012002 Zdroj.dok. Journal of Physics: Conference Series, 1046. - Bristol : IOP Publishing Ltd., 2018 - ISSN 1742-6588 Rozsah stran roč. 959, č. 1 (2018) Poč.str. 8 s. Forma vydání Online - E Akce International Conferences on Research and Applications of Plasmas (PLASMA) Datum konání 17.09.2017 - 22.09.2017 Místo konání Varšava Země PL - Polsko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova runaway electrons ; tokamak Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech Obor OECD Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect) CEP LM2015045 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UFP-V - RVO:61389021 UT WOS 000431678000002 EID SCOPUS 85042941915 DOI 10.1088/1742-6596/959/1/012002 Anotace The paper concerns measurements of runaway electrons (REs) which are generated during discharges in tokamaks. The control of REs is an important task in experimental studies within the ITER-physics program. The NCBJ team proposed to study REs by means of Cherenkov-type detectors several years ago. The Cherenkov radiation, induced by REs in appropriate radiators, makes it possible to identify fast electron beams and to determine their spatial- and temporal-characteristics. The results of recent experimental studies of REs, performed in two tokamaks COMPASS in Prague and FTU in Frascati, are summarized and discussed in this paper. Examples of the electron-induced signals, as recorded at different experimental conditions and scenarios, are presented. Measurements performed with a three-channel Cherenkov-probe in COMPASS showed that the first fast electron peaks can be observed already during the current ramp-up phase. A strong dependence of RE-signals on the radial position of the Cherenkov probe was observed. The most distinct electron peaks were recorded during the plasma disruption. The Cherenkov signals confirmed the appearance of post-disruptive RE beams in circular-plasma discharges with massive Ar-puffing. During experiments at FTU a clear correlation between the Cherenkov detector signals and the rotation of magnetic islands was identified. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2020 Elektronická adresa https://iopscience.iop.org/article/10.1088/1742-6596/959/1/012002/pdf
Počet záznamů: 1