Understanding edge-localized mode mitigation by resonant magnetic perturbations on MAST

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F13%3A00392034" target="_blank" >RIV/61389021:_____/13:00392034 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/0029-5515/53/4/043007" target="_blank" >http://dx.doi.org/10.1088/0029-5515/53/4/043007</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0029-5515/53/4/043007" target="_blank" >10.1088/0029-5515/53/4/043007</a>

Result language

angličtina

Original language name

Understanding edge-localized mode mitigation by resonant magnetic perturbations on MAST

Original language description

Sustained edge-localized mode (ELM) mitigation has been achieved using resonant magnetic perturbations (RMPs) on MAST. The ELM frequency increases by up to a factor of eight with a similar reduction in energy loss. A threshold current is observed above which the ELM frequency increases approximately linearly with current in the coils. A comparison of the filament structures observed during the ELMs in the natural and mitigated stages shows that the mitigated ELMs have the characteristics of type I ELMseven though their frequency is higher, their energy loss is reduced and the pedestal pressure gradient is decreased. During the ELM mitigated stage clear lobe structures are observed in visible-light imaging of the X-point region. The size of these lobesis correlated with the increase in ELM frequency observed. The RMPs produce a clear 3D distortion to the plasma and it is likely that these distortions explain why ELMs are destabilized and hence why ELM mitigation occurs.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

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Project

<a href="/en/project/GAP205%2F11%2F2341" target="_blank" >GAP205/11/2341: Control of edge localized modes in tokamaks by external magnetic perturbations</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nuclear Fusion

ISSN

0029-5515

e-ISSN

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Volume of the periodical

53

Issue of the periodical within the volume

4

Country of publishing house

AT - AUSTRIA

Number of pages

11

Pages from-to

043007-043007

UT code for WoS article

000316049300008

EID of the result in the Scopus database

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