Toroidal modeling of anisotropic thermal transport and energetic particle effects on stability of resistive plasma resistive wall mode

Bai, Xue; Liu, Yueqiang; Gao, Zhe; Hao, Guangzhou

doi:10.1063/5.0007426

Toroidal modeling of anisotropic thermal transport and energetic particle effects on stability of resistive plasma resistive wall mode

Journal Article · Mon Jul 06 00:00:00 EDT 2020 · Physics of Plasmas

DOI:https://doi.org/10.1063/5.0007426· OSTI ID:1799658

^[1]; Liu, Yueqiang ^[2]; Gao, Zhe ^[3]; Hao, Guangzhou ^[4]

Southwestern Institute of Physics, Chengdu (China); Tsinghua Univ., Beijing (China); Southwestern Institute of Physics, China
General Atomics, San Diego, CA (United States)
Tsinghua Univ., Beijing (China)
Southwestern Institute of Physics, Chengdu (China)

Effects of anisotropic thermal transport on the linear stability of the resistive plasma resistive wall mode (RPRWM) are investigated by the magnetohydrodynamic-kinetic hybrid code MARS-K [Liu et al., Phys. Plasmas 15, 112503 (2008)], including the kinetic contribution from energetic particles (EPs). It is found that thermal transport can further stabilize the RPRWM in the presence of drift kinetic contributions from EPs. This is different from the fluid model, which always predicts destabilization of the mode by thermal transport. Furthermore, the thermal transport effect is found to amplify the role played by an adiabatic term, associated with the radial distribution of EPs’ birth energy, in modifying the mode stability as well as the mode eigenfunction. The shape of the equilibrium profiles of EPs, in particular that of the temperature, is also found to strongly affect the mode stabilization. This profile effect is more pronounced in the absence of thermal transport. MARS-K computations show that the stabilizing effect by thermal transport is more likely to occur at slower plasma rotation and lower EP energy.

View Accepted Manuscript (DOE)

Research Organization:: General Atomics, San Diego, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: FC02-04ER54698; FG02-95ER54309

OSTI ID:: 1799658

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 7 Vol. 27; ISSN 1070-664X

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

Country of Publication:: United States

Language:: English

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