Počet záznamů: 1
Fast measurement of plasma potential, temperature and density in theSOL of ASDEX Upgrade, compared with ESEL simulation
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SYSNO ASEP 0352069 Druh ASEP A - Abstrakt Zařazení RIV Záznam nebyl označen do RIV Zařazení RIV Není vybrán druh dokumentu Název Fast measurement of plasma potential, temperature and density in theSOL of ASDEX Upgrade, compared with ESEL simulation Tvůrce(i) Horáček, Jan (UFP-V) RID, ORCID
Adámek, Jiří (UFP-V) RID, ORCID
Müller, H. W. (DE)
Seidl, Jakub (UFP-V) RID
Nielsen, A.H. (DK)
Rohde, V. (DE)
Mehlmann, F. (AT)
Ionita, C. (AT)
Havlíčková, Eva (UFP-V)Zdroj.dok. 3rd EFDA Transport Topical Group Meeting combined with 15th EU-US Transport Task Force Meeting. - Garching : Max Planck Society, 2010
O2.03-O2.03Poč.str. 1 s. Forma vydání web - web Akce EFDA Transport Topical Group Meeting combined with 15th EU-US Transport Task Force Meeting/3rd./ Datum konání 07.10.2010-10.10.2010 Místo konání Cordoba Země ES - Španělsko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova Tokamak ; plasma ; SOL turbulence ; ESEL Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech CEZ AV0Z20430508 - UFP-V (2005-2011) Anotace This contribution focuses on fast (1 μs) and local (2-4 mm) measurement of plasma density, potential and electron temperature in the edge plasma of tokamak ASDEX Upgrade. The measurements were performed by a combined Langmuir/Ball-pen probe. First, steady-state radial profiles demonstrate credibility of the Ball-pen probe. We demonstrate that floating potential fluctuations measured by a Langmuir probe are dominated by plasma electron temperature rather than potential. Spatial and temporal scales are found consistent with expectations based on interchange-driven turbulence. Conditionally averaged signals found for both potential and density are also consistent, however, those for temperature show an unexpected 4 mm wide decrease by 10% at the very center of a blob. In the wall shadow, temperature measured by the swept Langmuir probe yields values 10 eV, whilst the Ball-pen temperature gradient is more steep and credible, dropping down to 1 eV. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2011
Počet záznamů: 1