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DENK , S. S.

Last name: DENK

First name: S. S.

May 9, 2022 (v1)

Publication

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Effects of strong density fluctuations at the plasma edge on ECEI measurements at ASDEX Upgrade

Vanovac, B. Wolfrum, E. Denk, S. S.

EUROfusion Consortium 633053

Uploaded on: March 1, 2023
April 13, 2022 (v1)

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Effects of density gradients and fluctuations at the plasma edge on ECEI measurements at ASDEX Upgrade

Vanovac, B. Wolfrum, E. Denk, S. S.

Electron cyclotron emission imaging (ECEI) provides measurements of electron temperature (Te) and its fluctuations (δTe). However, when measuring at the plasma edge, in the steep gradient region, radiation transport effects must be taken into account. It is shown that due to these effects, the scrape-off layer region is not accessible to the...

Uploaded on: March 1, 2023
April 11, 2022 (v1)

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Observation of accelerated beam ion population during edge localized modes in the ASDEX Upgrade tokamak

Galdón Quiroga, Joaquín García Muñoz, Manuel McClements, K. G.

The interaction between fast-ions and edge localized modes (ELMs) is investigated by means of fast-ion loss detector measurements. Fast-ion losses are increased during ELMs exhibiting a 3D filamentary-like behaviour. An accelerated beam ion population has been observed during ELMs in a tokamak for the first time. Tomographic inversion of the...

Uploaded on: March 1, 2023