Relative shift in position of temperature and density pedestals at the COMPASS tokamak.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F17%3A00482690" target="_blank" >RIV/61389021:_____/17:00482690 - 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
Relative shift in position of temperature and density pedestals at the COMPASS tokamak.
Original language description
Recent analysis performed on ASDEX Upgrade, NSTX and DIII-D suggest that the density profile position plays an important role in pedestal stability [1,2,3]. On JET and ASDEX Upgrade, it has been observed that the electron temperature and electron density profiles can have different relative pedestal positions (so-called relative shift). As shown in [4,5], the increase of the relative shift is correlated with the reduction in the normalized pressure gradient, leading to a weakening of the pedestal stability. Therefore, in this work, analysis of the effect of the relative shift has been carried on the COMPASS tokamak discharges. The dataset used for analysis was obtained during two dedicated experimental campaigns in 2015 and 2016 [6]. Systematic measurements of pedestal structure were performed in Ohmic and NBIassisted Type I ELMy H-modes [7]. For PNBI exceeding 200 kW the electron pedestal temperature reached 300 eV, allowing to achieve pedestal collisionality Vped* < 1 at q95 ~3. Measurements during the last 30% of the ELM cycle were considered for analysis.
Czech name
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Czech description
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Project
<a href="/en/project/GA14-35260S" target="_blank" >GA14-35260S: Study of dynamics of the edge transport barrier on the COMPASS tokamak</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

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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