Effect of toroidal particle sources on SOL physics in the FT-2 tokamak

Francis Clinton Prasanth Albert Devasagayam; Laurent Chôné; Timo Petteri Kiviniemi; Oksana Kaledina; Sergei Shatalin; Alexey Dmitrievich Gurchenko; Alexey Altukhov; Evgeniy Gusakov; Mikhail Kantor; Denis Kouprienko; Sergei Lashkul

doi:10.1002/ctpp.202100192

Effect of toroidal particle sources on SOL physics in the FT-2 tokamak

Francis Clinton Prasanth Albert Devasagayam^*, Laurent Chôné, Timo Petteri Kiviniemi, Oksana Kaledina, Sergei Shatalin, Alexey Dmitrievich Gurchenko, Alexey Altukhov, Evgeniy Gusakov, Mikhail Kantor, Denis Kouprienko, Sergei Lashkul

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

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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.

Original language	English
Article number	202100192
Number of pages	7
Journal	Contributions to Plasma Physics
Volume	62
Issue number	5-6
Early online date	10 Mar 2022
DOIs	https://doi.org/10.1002/ctpp.202100192
Publication status	Published - 1 Jun 2022
MoE publication type	A1 Journal article-refereed

Keywords

gyrokinetic simulation
particle sources
PIC
scrape-off layer
tokamak plasma edge
turbulence

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10.1002/ctpp.202100192Licence: CC BY

Effect of toroidal particle sources on SOL physics in the FT-2 tokamakFinal published version, 2.18 MBLicence: CC BY

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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, 62(5-6), Article 202100192. Advance online publication. https://doi.org/10.1002/ctpp.202100192

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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.",

keywords = "gyrokinetic simulation, particle sources, PIC, scrape-off layer, tokamak plasma edge, turbulence",

author = "{Albert Devasagayam}, {Francis Clinton Prasanth} and Laurent Ch{\^o}n{\'e} and Kiviniemi, {Timo Petteri} and Oksana Kaledina and Sergei Shatalin and Gurchenko, {Alexey Dmitrievich} and Alexey Altukhov and Evgeniy Gusakov and Mikhail Kantor and Denis Kouprienko and Sergei Lashkul",

note = "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: {\textcopyright} 2022 The Authors Contributions to Plasma Physics published by Wiley-VCH GmbH.",

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AU - Kiviniemi, Timo Petteri

AU - Kaledina, Oksana

AU - Shatalin, Sergei

AU - Gurchenko, Alexey Dmitrievich

AU - Altukhov, Alexey

AU - Gusakov, Evgeniy

AU - Kantor, Mikhail

AU - Kouprienko, Denis

AU - Lashkul, Sergei

N1 - 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.

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N2 - 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.

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Effect of toroidal particle sources on SOL physics in the FT-2 tokamak

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MoPEF: Molecules and Photons in the edge of fusion plasmas

-: Turbulent transport of fusion plasmas

-: Cyclokinetic edge turbulence in tokamak plasmas

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Effect of toroidal particle sources on SOL physics in the FT-2 tokamak

Abstract

Keywords

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Projects

MoPEF: Molecules and Photons in the edge of fusion plasmas

-: Turbulent transport of fusion plasmas

-: Cyclokinetic edge turbulence in tokamak plasmas

Cite this