Effect of toroidal particle sources on SOL physics in the FT-2 tokamak
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2022-06-01
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Language
en
Pages
7
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Contributions to Plasma Physics, Volume 62, issue 5-6
Abstract
Two gas-puffs are used near limiters in the FT-2 tokamak for the purpose of hydrogen refuelling during plasma discharges. This creates toroidal and poloidal asymmetry in particle sources near limiters which has to be considered in modelling. Here, the effect of toroidal asymmetry is simulated using the gyrokinetic code ELMFIRE. Two slightly different toroidal particle sources are used in simulations, and their results are compared with each other, and with experimental measurements to understand the impact of toroidal particle sources on Scrape-off Layer (SOL) physics.Description
Funding Information: This work has been supported by the Academy of Finland grants 330050, 316088, and 330342. The CSC – IT Center for Science is acknowledged for generous allocation of computational resources for this work. The experimental data were obtained with the support of the Russian Science Foundation grant 17‐12‐01110, whereas the FT‐2 discharge parameters presented in the Figure 3 were obtained with support of the Ioffe Institute state contract 0040‐2019‐0023. Publisher Copyright: © 2022 The Authors Contributions to Plasma Physics published by Wiley-VCH GmbH.
Keywords
gyrokinetic simulation, particle sources, PIC, scrape-off layer, tokamak plasma edge, turbulence
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Citation
Albert Devasagayam , F C P , Chôné , L , Kiviniemi , T P , Kaledina , O , Shatalin , S , Gurchenko , A D , Altukhov , A , Gusakov , E , Kantor , M , Kouprienko , D & Lashkul , S 2022 , ' Effect of toroidal particle sources on SOL physics in the FT-2 tokamak ' , Contributions to Plasma Physics , vol. 62 , no. 5-6 , 202100192 . https://doi.org/10.1002/ctpp.202100192