MHD perturbation amplitudes required to trigger disruptions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F14%3A00441691" target="_blank" >RIV/61389021:_____/14:00441691 - 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
MHD perturbation amplitudes required to trigger disruptions
Original language description
For a large database of JET disruptions (>300) the mode amplitude at the start of the thermal quench has been determined. A similar analysis is being performed for ASDEX Upgrade disruptions. It was found that the thermal quench was triggered at a distinct perturbation level depending predominantly on the plasma current. A regression analysis found that this maximum allowable amplitude scaled linearly with the plasma current (I p ) and furthermore depended on the internal inductance (l i ) and the inverse of the edge safety factor, q. This dependence of the measured perturbation on the mode position means that disruptions are triggered at smaller measured amplitude when operating at higher q. This study provides experimental insight in the processes that trigger tokamak disruptions.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Europhysics conference abstracts Vol. 38F, 41st European Physics Society Conference on Plasma Physics
ISBN
2-914771-90-8
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
Berlin
Event date
Jun 23, 2014
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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