Fully nonlinear δf gyrokinetics for scrape-off layer parallel transport

Pan, Q.; Told, D.; Jenko, F.

doi:10.1063/1.4964666

Title: Fully nonlinear δf gyrokinetics for scrape-off layer parallel transport

Journal Article · Mon Oct 10 00:00:00 EDT 2016 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4964666· OSTI ID:1465152

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^[1]; Jenko, F. ^[1]

Univ. of California, Los Angeles, CA (United States). Dept. of Physics and Astronomy

Edge plasmas present a few challenges for gyrokinetic simulations that are absent in tokamak cores. Among them are large fluctuation amplitudes and plasma-wall interactions in the open field line region. In this work, the widely used core turbulence code GENE, which employs a δf-splitting technique, is extended to simulate open systems with large electrostatic fluctuations. With inclusion and proper discretization of the parallel nonlinear term, it becomes equivalent to a full-f code and the δf-splitting causes no fundamental difficulty in handling large fluctuations. The loss of particles to the wall is accounted for by using a logical sheath boundary, which is implemented in the context of a finite-volume method. The extended GENE code is benchmarked for the well-established one-dimensional parallel transport problem in the scrape-off layer during edge-localized modes. The parallel heat flux deposited onto the divertor target is compared with previous simulation results and shows good agreement.

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Research Organization:: Univ. of California, Los Angeles, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division

Contributing Organization:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Princeton Univ., NJ (United States). Max-Planck-Princeton Center for Plasma Physics

Grant/Contract Number:: SC0016073; S014889-R; AC02-05CH11231

OSTI ID:: 1465152

Alternate ID(s):: OSTI ID: 1328478

Journal Information:: Physics of Plasmas, Vol. 23, Issue 10; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 7 works

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Full- f gyrokinetic simulation of turbulence in a helical open-field-line plasma Shi, E. L.; Hammett, G. W.; Stoltzfus-Dueck, T. Physics of Plasmas, Vol. 26, Issue 1 https://doi.org/10.1063/1.5074179	journal	January 2019
Gyrokinetic full-f particle-in-cell simulations on open field lines with PICLS Boesl, M.; Bergmann, A.; Bottino, A. Physics of Plasmas, Vol. 26, Issue 12 https://doi.org/10.1063/1.5121262	journal	December 2019
Full- f version of GENE for turbulence in open-field-line systems Pan, Q.; Told, D.; Shi, E. L. Physics of Plasmas, Vol. 25, Issue 6 https://doi.org/10.1063/1.5008895	journal	June 2018
Gyrokinetic full-f particle-in-cell simulations on open field lines with PICLS Boesl, Mathias Helmut; Bergmann, Andreas; Bottino, Alberto arXiv https://doi.org/10.48550/arxiv.1908.00318	text	January 2019

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Title: Fully nonlinear δf gyrokinetics for scrape-off layer parallel transport

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