On the origin of high harmonic fast wave edge losses in NSTX

Tierens, W.; Bilato, R.; Bertelli, N.; Shiraiwa, S.; Myra, J.; Colas, L.

doi:10.1088/1741-4326/ac7c7d

Title: On the origin of high harmonic fast wave edge losses in NSTX

Journal Article · 17 July 2022 · Nuclear Fusion

DOI: https://doi.org/10.1088/1741-4326/ac7c7d · OSTI ID:1887996

^[1]; Bilato, R. ^[1];

^[2]; Shiraiwa, S. ^[2];

^[3]; Colas, L. ^[4]

Max Planck Society, Garching (Germany). Max Planck Institute for Plasma Physics
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Lodestar Research Corp., Boulder, CO (United States)
CEA, IRFM, Saint Paul Lez Durance (France)

Many mechanisms have been proposed to explain the high harmonic fast wave edge losses in the National Spherical Torus Experiment (NSTX) (Perkins et al 2012 Phys. Rev. Lett. 109 045001). Here, we discuss a newly discovered edge loss mechanism (Tierens et al 2021 Plasma Phys. Control. Fusion 64 035001) which involves the resonant excitation of surface waves on filaments. We show that this edge loss mechanism can explain the main parameter dependencies observed in NSTX experiments.

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

Sponsoring Organization:: European Union (EU); USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Grant/Contract Number:: AC02-05CH11231; SC0018090

OSTI ID:: 1887996

Journal Information:: Nuclear Fusion, Journal Name: Nuclear Fusion Journal Issue: 9 Vol. 62; ISSN 0029-5515

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

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Title: On the origin of high harmonic fast wave edge losses in NSTX

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