Tokamak Plasma Flows Induced by Local RF Forces

Chen, Jiale; Gao, Zhe

doi:10.1088/1009-0630/17/10/01

Cited by 2 publications

(1 citation statement)

References 41 publications

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“…The local rf force can induce torque from asymmetric k-spectrum or asymmetric absorption, or, even the total torque is zero, the local force can generate net drive effect from momentum redistribution [44]. In other words, local rf force can provide a local momentum source and then direct drive the toroidal flow, which is possibly responsible for explaining the flows observed in lower hybrid wave current drive (LHCD) and mode conversion ion cyclotron wave heated (MC-ICH) plasmas [45]. This talk also pointed out that the effect of rf on momentum transport (diffusion and pinch) is of the same importance as the momentum source provided by rf.…”

Section: Plasma Rotation Generation and Modelingmentioning

confidence: 99%

APTWG: The 5th Asia-Pacific Transport Working Group Meeting

et al. 2016

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This conference report gives a summary on the contributed papers and discussions presented at the 5th Asia-Pacific Transport Working Group Meeting held at Dalian, China from 9–12 June 2015. The main goal of the working group is to develop a predictive understanding of the basic mechanisms responsible for particle, momentum and energy transport in magnetically confined plasmas. The topics of the meeting in 2015 were organized under five main headings: (1) turbulence suppression and transport barrier formation, (2) effect of magnetic topology on MHD activity and transport, (3) non-diffusive contribution of momentum and particle transport, (4) non-local transport and turbulence spreading and coupling and (5) energetic particles and instability. The Young Researchers’ Forum which was held at this meeting is also described in this report.

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Section: Plasma Rotation Generation and Modelingmentioning

confidence: 99%

APTWG: The 5th Asia-Pacific Transport Working Group Meeting

et al. 2016

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Transport of poloidal momentum induced by ion cyclotron range of frequencies waves

Zhang

Wang

et al. 2020

Physics of Plasmas

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By using the Lie-transform method, transport of the poloidal momentum induced by the ion cyclotron range of frequencies waves is calculated in the slab geometry. The poloidal momentum equation is derived in the cases with the equilibrium distribution function adopted as a Maxwellian distribution and an anisotropic distribution in the velocity space; in both cases, the poloidal Reynolds stress (PRS) is due to the correlation between the deviation of particle position and the deviation of particle energy, and the poloidal momentum source term is due to the correlation between the deviation of particle poloidal velocity and the deviation of particle energy. The PRS can be partly canceled out by the poloidal momentum source term, resulting in an effective PRS, which is related to the symmetry of poloidal spectrum and the order of cyclotron resonance. In the basic frequency cyclotron resonance case, by adopting the long-wave-limit approximation, the effective PRS is related to the gradient of electric field energy; this term dominates in the case with a strong asymmetry of poloidal spectrum. The calculation is extended to the case with a spatially inhomogeneous equilibrium distribution. The contribution from the inhomogeneity in the configuration space to the effective PRS is derived, which is found to be comparable to the part driven by the inhomogeneity in the velocity space in the case with a symmetric poloidal spectrum.

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Tokamak Plasma Flows Induced by Local RF Forces

Cited by 2 publications

References 41 publications

APTWG: The 5th Asia-Pacific Transport Working Group Meeting

APTWG: The 5th Asia-Pacific Transport Working Group Meeting

Transport of poloidal momentum induced by ion cyclotron range of frequencies waves

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