Results 1 to 10 of about 92 (76)

Modeling of toroidal momentum transport induced by neoclassical toroidal viscosity torque for ITER scenarios

Nuclear Fusion, 2023
Neoclassical toroidal viscosity (NTV) torque caused by resonant magnetic perturbation (RMP) and the induced toroidal momentum transport are investigated for International Thermonuclear Experimental Reactor (ITER) scenarios through numerical modeling. The
X.-T. Yan, Y.-W. Sun, L. Li, Y.-Q. Liu, N.-N. Bao, A. Loarte, S. Pinches, B.-N. Wan   +7 more
doaj   +2 more sources

Neoclassical toroidal plasma viscosity in bounce-transit and drift resonance regimes in tokamaks

Nuclear Fusion, 2023
Neoclassical toroidal plasma viscosity in the bounce-transit and drift resonance regimes is calculated using a version of the drift kinetic equation that encompasses the physics of the nonlinear trapping and quasilinear plateau regimes in tokamaks. It is
K.C. Shaing, M. Garcia-Munoz, E. Viezzer
doaj   +4 more sources

Neoclassical Toroidal Plasma Viscosity Torque in Collisionless Regimes in Tokamaks [PDF]

Physical Review Letters, 2010
Bumpiness in a magnetic field enhances the magnitude of the plasma viscosity and increases the rate of the plasma flow damping. A general solution of the neoclassical toroidal plasma viscosity (NTV) torque induced by nonaxisymmetric magnetic perturbation (NAMP) in the collisionless regimes in tokamaks is obtained in this Letter.
Hans Rudolf Koslowski, K C Shaing, Yunfeng Liang   +2 more
exaly   +4 more sources

Resonant mode effects on rotation braking induced by n = 1 resonant magnetic perturbations in the EAST tokamak

Nuclear Fusion, 2023
The spectrum effects on toroidal rotation braking, induced by n  = 1 resonant magnetic perturbations (RMPs) in the discharges with $q_{95} = 4.1$ and $q_{95} = 5.1$ , are studied in the EAST tokamak.
H. Sheng, Y.W. Sun, X.Y. Li, H.H. Li, X.M. Wu, Y.Y. Li, S.F. Mao, Q. Ma, Y.Q. Liu, C. Ye, X.T. Yan, P.C. Xie, Q. Zang, H.H. Wang, M.N. Jia, M.Y. Ye, the EAST Team   +16 more
doaj   +1 more source

Numerical Verification of Bounce-Harmonic Resonances in Neoclassical Toroidal Viscosity for Tokamaks [PDF]

Physical Review Letters, 2013
This Letter presents the first numerical verification for the bounce-harmonic (BH) resonance phenomena of the neoclassical transport in a tokamak perturbed by nonaxisymmetric magnetic fields. The BH resonances were predicted by analytic theories of neoclassical toroidal viscosity (NTV), as the parallel and perpendicular drift motions can be resonant ...
Kimin, Kim, Jong-Kyu, Park, Allen H, Boozer   +2 more
openaire   +5 more sources

Transition in particle transport under resonant magnetic perturbations in a tokamak

Nuclear Fusion, 2023
Nonlinear 3D MHD simulations and validations reveal that the hybrid particle-MHD transport is a key process for driving the pump-out in the presence of Resonant Magnetic Perturbations (RMPs) in the KSTAR tokamak.
S.K. Kim, N.C. Logan, M. Becoulet, M. Hoelzl, Q. Hu, G.T.A. Huijsmans, S.J.P. Pamela, Q. Yu, S.M. Yang, C. Paz-soldan, E. Kolemen, J.-K. Park   +11 more
doaj   +1 more source

Toroidal modeling of plasma flow damping and density pump-out by RMP during ELM mitigation in HL-2A

Nuclear Fusion, 2023
Reduction of both the plasma density and toroidal flow speed, due to application of the predominantly n  = 1 ( n is the toroidal mode number) resonant magnetic perturbation (RMP) for controlling the edge localized mode in the HL-2A tokamak, is ...
N. Zhang, Y.Q. Liu, D.L. Yu, Yi Liu, G.Z. Hao, L. Liu, X.X. He, T.F. Sun, X.Q. Ji, S. Wang, G.Q. Dong, X. Bai, Y.L. Wei, W.J. Chen, Y.W. Sun, M. Jiang, Y.P. Zhang, Z.B. Shi, W.L. Zhong, M. Xu   +19 more
doaj   +1 more source

The effect of plasma beta on error-field penetration in radio-frequency wave heated plasmas in EAST

Nuclear Fusion, 2023
The plasma-beta effect on the n  = 1 resonant magnetic perturbation (RMP) field penetration in purely radio-frequency (RF) wave heated discharges has been investigated in EAST.
Cheng Ye, You-Wen Sun, Hui-Hui Wang, Yue-Qiang Liu, Tong-Hui Shi, Qing Zang, Tian-Qi Jia, Qun Ma, Shuai Gu, Nan Chu, Kai-Yang He, Man-Ni Jia, Xue-Min Wu, Peng-Cheng Xie, Hui Sheng, Hua Yang, Lian-Sheng Huang, Biao Shen, Miao-Hui Li, Jin-Ping Qian, the EAST Team   +20 more
doaj   +1 more source

Toroidal modeling of 3D perturbations generated by current filaments in scrape-off layer in tokamak with biased divertor targets

Nuclear Fusion, 2022
The divertor biasing technique offers a promising alternative to control the edge localized mode (ELM) as well as the divertor heat load in tokamaks, as compared to the resonant magnetic perturbation (RMP) generated by magnetic coils.
G.Z. Hao, G.Q. Dong, B.T. Cui, Y.Q. Liu, Y.H. Xu, T.F. Sun, X.Q. Ji, S. Wang, Y.F. Zhao, J.Q. Xu, X. Bai, N. Zhang, C.Y. Li, L. Wang, H.D. He, J.M. Gao, Yi Liu, W.L. Zhong, M. Xu, X.R. Duan   +19 more
doaj   +1 more source

Comparison of toroidal viscosity with neoclassical theory

Physics of Plasmas, 1997
Toroidal rotation profiles are measured with charge exchange spectroscopy for a plasma heated with tangential neutral beam injection (NBI) in the Compact Helical System (CHS) heliotron/torsatron device [Ida et al., Phys. Rev. Lett. 67, 58 (1991)] to estimate the toroidal viscosity.
K. Ida, N. Nakajima
openaire   +1 more source