Počet záznamů: 1
Development of a Cherenkov-type diagnostic system to study runaway electrons within the COMPASS tokamak
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SYSNO ASEP 0481460 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Development of a Cherenkov-type diagnostic system to study runaway electrons within the COMPASS tokamak Tvůrce(i) Rabinski, M. (PL)
Jakubowski, L. (PL)
Malinowski, K. (PL)
Sadowski, M. J. (PL)
Zebrowski, J. (PL)
Jakubowski, M.J. (PL)
Mirowski, R. (PL)
Weinzettl, Vladimír (UFP-V) RID, ORCID
Ficker, Ondřej (UFP-V) ORCID
Mlynář, Jan (UFP-V) RID
Pánek, Radomír (UFP-V) RID
Papřok, Richard (UFP-V) RID
Vlainic, Milos (UFP-V)Číslo článku C10014 Zdroj.dok. Journal of Instrumentation. - : Institute of Physics Publishing - ISSN 1748-0221
Roč. 12, October (2017)Poč.str. 8 s. Forma vydání Tištěná - P Akce European Conference on Plasma Diagnostics (ECPD2017)/2./ Datum konání 18.04.2017 - 21.04.2017 Místo konání Bordeaux Země FR - Francie Typ akce EUR Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Nuclear instruments and methods for hot plasma diagnostics ; Plasma diagnostics - probes Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech Obor OECD 2.11 Other engineering and technologies CEP LM2015045 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UFP-V - RVO:61389021 UT WOS 000414167000014 EID SCOPUS 85033665917 DOI https://doi.org/10.1088/1748-0221/12/10/C10014 Anotace Direct measurements of fast electrons, which are produced in high-temperature plasma and escape from tokamak-type facilities, are of particular interest for ITER and future fusion devices, where intense runaway electrons (RE) can significantly damage the firstwall components. Therefore, the runaway control and mitigation based on credible measuring methods should be developed
already in present devices. A team from the National Centre for Nuclear Research (NCBJ), Poland, developed special probes equipped with Cherenkov-type detectors for measurements of the fast electrons within edge plasmas of tokamaks. Studies of the fast runaway electrons were extensively carried out at the COMPASS tokamak at the Institute of Plasma Physics (IPP) in Prague during experimental campaigns in 2014–2016. In order to investigate an electron-beam energy distribution a three-channel probe equipped with the Cherenkov-type detectors sensitive to electrons of different energies has been constructed. The measurements performed by means of these detectors showed that the first fast electron peak appears usually in the current ramp-up phase, even before the hard Xrays (HXR) pulse. Some electron signals can also be observed during subsequent HXR emissions.
However, the most distinct electron peaks in all energy channels appear mainly during the plasma disruption. A correlation of Cherenkov signals with the MHD activity was also studied.Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2018
Počet záznamů: 1