Observation of Secondary Instability of 2/1 Magnetic Island in COMPASS High Density Limit Plasmas.
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F16%3A00483193" target="_blank" >RIV/61389021:_____/16:00483193 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Observation of Secondary Instability of 2/1 Magnetic Island in COMPASS High Density Limit Plasmas.
Original language description
Density limit disruptions (DLDs) have been observed in high density tokamak plasmas. It is important to understand the dynamics of the DLDs so that better mitigation strategies can be developed. In this work, following detection in JET of a secondary instability (SI) to the m/n = 2/1 MHD mode in the precursor of DLD, we analyse the evolution of the magnetic island in COMPASS DLD to look for the presence of this SI just close to the onset of energy quench phase of the disruption. The presence of this SI was associated with the occurrence of minor disruptions preceding the major disruption and with the major disruption itself in [Salzedas, F., 2011]. The coherence observed between the perturbations caused by the SI in the magnetic poloidal flux and in the electron temperature was high, allowing to determine that the SI perturbations came from the same position as the magnetic island. In the work presented here, only the perturbations in the magnetic poloidal flux are analysed.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
<a href="/en/project/LM2015045" target="_blank" >LM2015045: COMPASS – Tokamak for Thermonuclear Fusion Research</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
EPS 2016: 43rd European Physical Society Conference on Plasma Physics
ISBN
2-914771-99-1
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
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Publisher name
European Physical Society
Place of publication
Mulhouse
Event location
Leuven
Event date
Jul 4, 2016
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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