Kinetic equilibrium reconstruction on EAST tokamak

Li, G Q; Ren, Q.; Qian, J.; Lao, L. L.; Ding, Siye; Chen, Y J; Liu, Z X; Lu, Baozhu; Zang, Qing

doi:10.1088/0741-3335/55/12/125008

Cited by 56 publications

(45 citation statements)

References 26 publications

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“…The EAST equilibrium used here was reconstructed by the EFIT code 45 by using the constraints from experimental diagnostics in EAST discharge #38300 at 3.9 s. 46 Figure 5 plots the flux surfaces of the equilibrium and the flux coordinates grids within the last closed flux surface (LCFS) used in the numerical calculation. The equilibrium is a double-null configuration with the LCFS connected with the lower X point.…”

Section: Taes In East Discharge #38300mentioning

confidence: 99%

Numerical study of Alfvén eigenmodes in the Experimental Advanced Superconducting Tokamak

Gorelenkov

et al. 2014

Physics of Plasmas

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Alfv en eigenmodes in up-down asymmetric tokamak equilibria are studied by a new magnetohydrodynamic eigenvalue code. The code is verified with the NOVA code for the Solov ev equilibrium and then is used to study Alfv en eigenmodes in a up-down asymmetric equilibrium of the Experimental Advanced Superconducting Tokamak. The frequency and mode structure of toroidicity-induced Alfv en eigenmodes are calculated. It is demonstrated numerically that up-down asymmetry induces phase variation in the eigenfunction across the major radius on the midplane. V C 2014 AIP Publishing LLC. [http://dx.

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Section: Taes In East Discharge #38300mentioning

confidence: 99%

Numerical study of Alfvén eigenmodes in the Experimental Advanced Superconducting Tokamak

Gorelenkov

et al. 2014

Physics of Plasmas

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“…Because in EAST H-mode discharges, the plasma density and temperature profiles are not well measured experimentally, especially near the pedestal, we use the joint DIII-D experimentally measured data of temperature and density profiles (shot 154406), which is similar to those in the EAST H-mode discharge (shot 38300). 28 The electron temperature profile and density profile are shown in Fig. 7.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

“…But for H-mode discharges, the plasmas density and temperature profiles are much different, and the experimental data will be used. 28,29 …”

Section: B Plasma Equilibrium and Magnetic Topology With Magnetic Ismentioning

confidence: 99%

Effect of magnetic islands on lower hybrid current drive in experimental advanced superconductor tokamak plasma with circular cross section

Xiang

Shi

2014

Physics of Plasmas

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The lower hybrid wave current drive (LHCD) in the presence of magnetic islands in Tokamak plasma with the circular cross section is studied numerically. The emergence of magnetic island is considered as a perturbation characterized by the perturbed magnetic flux near the resonant surface. By taking the perturbed magnetic field into account in the lower hybrid simulation code, the wave propagation, power deposition, and current drive are investigated using typical Experimental Advanced Superconductor Tokamak (EAST) L- and H-modes discharge parameters. The simulation results show that the wave propagation, power deposition, and current drive are significantly affected by the existence of magnetic island. Due to the H-mode pedestal, the effect of magnetic islands on the LHCD in EAST H-mode discharge is more significant than that in the L-mode discharge.

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“…The SXR measurements and equilibrium results from kinetic EFIT (k-EFIT) (Li et al. 2013; Qian et al. 2017) show that the fishbone instability is located inside the q = 1 surface, corresponding to ρ ~ 0.15 ( ρ is the square root of the normalized toroidal flux), as shown in figure 3( c ).…”

Section: Dependence Of Fishbone Cycle Frequency On Plasma Parametersmentioning

confidence: 99%

Dependence of fishbone cycle on energetic particle intensity in EAST low-magnetic-shear plasmas

et al. 2020

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The dependence of fishbone cycle on energetic particle intensity has been investigated in EAST low-magnetic-shear plasmas. It is observed that the fishbone mode growth rate, saturation amplitude as well as fishbone cycle frequency clearly increase with increasing neutral beam injection (NBI) power. Moreover, enhanced electron density and temperature perturbations as well as energetic particle loss were observed with greater injected NBI power. Simulation results using M3D-K code show that as the NBI power increases, the resonant frequency and the energy of the resonant particles become higher, and the saturation amplitude of the mode also changes, due to the non-perturbative energetic particle contribution. The relationship between the calculated energetic particle pressure ratio and fishbone cycle frequency is obtained as ${f_{\textrm{FC}}} = 2.2{(1000{\beta _{\textrm{ep,calc}}} - 0.1)^{5.9 \pm 0.5}}$ . Results consistent with the experimental observations have been achieved based on a predator–prey model.

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Kinetic equilibrium reconstruction on EAST tokamak

Cited by 56 publications

References 26 publications

Numerical study of Alfvén eigenmodes in the Experimental Advanced Superconducting Tokamak

Numerical study of Alfvén eigenmodes in the Experimental Advanced Superconducting Tokamak

Effect of magnetic islands on lower hybrid current drive in experimental advanced superconductor tokamak plasma with circular cross section

Dependence of fishbone cycle on energetic particle intensity in EAST low-magnetic-shear plasmas

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