UKAEA Journals

Showing 1 - 6 of 6 Journals Results
2021
UKAEA-CCFE-PR(21)39
"Screening of resonant magnetic perturbation fields assuming various plasma flow models"

Li Li Yueqiang Liu Guoliang Xia Y. F. Wang Q. B. Luan W. D. Zhang F. C. Zhong

A recently updated version of the MARS-F code [Y. Q. Liu et al. Phys. Plasmas 7, 3681 (2000); L. Li et al. Phys. Plasmas 25, 082512 (2018); G. L. Xia et al. Nucl. Fusion 59, 126035 (2019)] is utilized to numerically investigate the plasma screening effect on the applied resonant magnetic perturbation (RMP) field, assuming various equilibrium flo…

Preprint Published
2021
UKAEA-CCFE-PR(21)03
"Modeling active control of resistive wall mode with power saturation and sensor noise on HL-2M"

Shuo Wang Yueqiang Liu Guoliang Xia X. M. Song G. Z. Hao L. Li B. Li N. Zhang G. Q. Dong X. Bai G. Y. Zheng

The resistive wall mode (RWM) control on the HL-2M tokamak is simulated with the MARS-F code [Liu Y Q et al 2000 Phys. Plasmas 7 3681], aiming at quantifying control current and voltage requirements when more realistic issues are taken into account, i.e. the control power saturation and the sensor signal noise. The fluid model predicts a narrow st…

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The published version of this paper is currently under embargo and will be available on 16/04/2022
2021
UKAEA-CCFE-PR(21)02
"MARS-Q modeling of kink-peeling instabilities in DIII-D QH-mode plasma"

Guanqi Dong Yueqiang Liu Xi Chen Guangzhou Hao Yi Liu Shuo Wang Neng Zhang Guoliang Xia

In quiescent H-mode (QH-mode) regime, edge harmonic oscillations (EHOs) are believed to provide necessary radial transport to prevent occurrence of large edge localized modes. A systematic modeling study is performed here on the low-n EHOs in a DIII-D QH-mode plasma [Chen et al. 2016 Nucl. Fusion 56 076011], by utilizing the MARS-Q code [Liu et a…

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The published version of this paper is currently under embargo and will be available on 22/03/2022
2020
UKAEA-CCFE-PR(20)102
"Active control of resistive wall mode via modification of external tearing index"

Yuling He Yueqiang Liu Xu Yang Guoliang Xia Li Li

Modification of the external tearing index, Δ’ext , by magnetic feedback is analytically investigated, for the purpose of controlling the resistive plasma resistive wall mode (RP-RWM). The matching method is pursued, by deriving expressions for the close-loop Δ’ext and by linking it to the counterpart from the inner layer. Various…

Preprint Published
2019
UKAEA-CCFE-PR(20)121
"Effects of poloidal and parallel flows on resistive wall mode instability in toroidally rotating plasmas"

Guoliang Xia Yueqiang Liu L. Li C. J. Ham Z . Wang Shuo Wang

Effects of parallel and poloidal flows, as well as the flow shear, on the resistive wall mode (RWM) instability have been numerically investigated in toroidally rotating plasmas, utilizing a recently updated version of the MARS-F code (Liu Y Q et al 2000 Phys. Plasmas 7 3681). A significant difference between these flow…

Preprint Published
2018
UKAEA-CCFE-PR(18)61
"Toroidal modeling of resistive wall mode stability and control in HL-2M tokamak"

Guoliang Xia Yueqiang Liu C. J. Ham Shuo Wang Li Li G. Y. Zheng J. X. Li N. Zhang X. Bai G. Q. Dong the HL-2M team

Effects of toroidal plasma flow, magnetic drift kinetic damping as well as feedback control, on the resistive wall mode instability in HL-2M tokamak are numerically investigated, using the linear stability codes MARS-F/K (Liu Y Q et al 2000 Phys. Plasmas 7 3681, Liu Y Q et al 2008 Phys. Plasmas 15…

Preprint Published