Study of Secondary Instability of 2/1 Magnetic Island in COMPASS High Density Limit Plasmas.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F17%3A00482424" target="_blank" >RIV/61389021:_____/17:00482424 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Study of Secondary Instability of 2/1 Magnetic Island in COMPASS High Density Limit Plasmas.
Original language description
For generating fusion power, high plasma density is indispensable for reactor tokamaks but it may lead to the density limit disruption (DLD). The physical mechanisms behind the underlying processes of DLD are only partially understood. The growing MHD instabilities are often regarded as precursors to DLD. A secondary instability to the rotating (2,1) magnetic island was observed prior to the thermal quench, when the amplitude of the magnetic island is large and its rotation frequency is low, first in JET and then in COMPASS tokamaks.nThe secondary instability is characterized by small amplitude perturbations, with no m or n mode numbers, superimposed on the perturbations of the precursor magnetic island. The frequency of the SI is higher than the rotating frequency of the island itself.nThe presented work focuses on the study of the SI behaviour in the period preceding the thermal quench. n
Czech name
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Czech description
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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

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
EPS 2017: 44th European Physical Society Conference on Plasma Physics
ISBN
979-10-96389-07
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
Belfast
Event date
Jun 26, 2017
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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