Investigations of plasma response associated with resonant magnetic perturbation fields using perturbation method in KSTAR H-mode plasmas

Xiao, W. W.; Evans, T. E.; Tynan, G. R.; Orlov, D. M.; Yoon, S. W.; Ko, W. H.; Kim, M. W.; Jeon, Y. M.; Nam, Y. U.; Oh, Y. K.; KSTAR Team,

doi:10.1088/1741-4326/ac4b01

Investigations of plasma response associated with resonant magnetic perturbation fields using perturbation method in KSTAR H-mode plasmas

Journal Article · 19 April 2022 · Nuclear Fusion

DOI:https://doi.org/10.1088/1741-4326/ac4b01· OSTI ID:1979411

^[1]; ; Tynan, G. R.; ; Yoon, S. W.; Ko, W. H.; ; Jeon, Y. M.; Nam, Y. U.; Oh, Y. K.; KSTAR Team,

OSTI

Abstract

The plasma response associated with the resonant magnetic perturbation (RMP) field was investigated using the small edge perturbations induced by a modulated supersonic molecular beam injection (SMBI) in KSTAR. The modulated SMBI provides a time-varying perturbation of the plasma density source in the region just inside the last closed flux surface and a modulated flow damping rate. Radial propagation of the toroidal rotation perturbation induced by SMBI from theq= 3 surface to theq= 2 surface was observed. Theoretical analysis using the general perturbed equilibrium code of the RMP intensity profiles of the RMP field is consistent with the phase profile of the toroidal rotation perturbation.

Research Organization:: Univ. of Wisconsin, Madison, WI (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

DOE Contract Number:: FG02-08ER54999

OSTI ID:: 1979411

Journal Information:: Nuclear Fusion, Journal Name: Nuclear Fusion Journal Issue: 6 Vol. 62; ISSN 0029-5515

Publisher:: IOP Science

Country of Publication:: United States

Language:: English

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