Reduction of transport due to magnetic shear in gyrokinetic simulations of the scrape-off layer

Mandell, N. R.; Hammett, G. W.; Hakim, A.; Francisquez, M.

doi:10.1088/1361-6587/ac72be

Reduction of transport due to magnetic shear in gyrokinetic simulations of the scrape-off layer

Journal Article · Mon Jun 27 00:00:00 EDT 2022 · Plasma Physics and Controlled Fusion

DOI:https://doi.org/10.1088/1361-6587/ac72be· OSTI ID:1887981

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Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center; Princeton University, NJ (United States)
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

We report the effect of varying magnetic shear on scrape-off layer turbulence and profiles is studied via electromagnetic gyrokinetic simulations of a helical scrape-off layer model. We develop a model helical geometry with magnetic shear and a corresponding field-aligned coordinate system, which is used for simulations with the Gkeyll code. We find that perpendicular transport is reduced in cases with stronger shear, resulting in higher peak particle and heat fluxes to the endplates. Electromagnetic effects slightly increase transport in strong shear cases.

View Accepted Manuscript (DOE)

Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: Multiscale Gyrokinetic Turbulence (MGK); USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Grant/Contract Number:: AC02-09CH11466; SC0014664

OSTI ID:: 1887981

Journal Information:: Plasma Physics and Controlled Fusion, Journal Name: Plasma Physics and Controlled Fusion Journal Issue: 8 Vol. 64; ISSN 0741-3335

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
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Reduction of transport due to magnetic shear in gyrokinetic simulations of the scrape-off layer

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