Reduction of sawtooth amplitude by resonant magnetic perturbation

Jianchao Li; Yonghua Ding; Qingquan Yu; Nengchao Wang; Da Li; Xiaoqing Zhang; Dongliang Han; Zhipeng Chen; Zhoujun Yang; Song Zhou; Wei Yan; Yunfeng Liang; Xiaolong Zhang; Xiaodong Lin; Huibin Sun; Xiang Gao; Jiangang Li

doi:10.1088/1741-4326/abae47

Reduction of sawtooth amplitude by resonant magnetic perturbation

Jianchao Li
, Yonghua Ding
, Qingquan Yu
, Nengchao Wang
, Da Li
, Xiaoqing Zhang
, Dongliang Han
, Zhipeng Chen
, Zhoujun Yang
, Song Zhou
, Wei Yan
, Yunfeng Liang
, Xiaolong Zhang
, Xiaodong Lin
, Huibin Sun
, Xiang Gao
, Jiangang Li

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Sawtooth crashes of large amplitude are detrimental to tokamak plasma confinement, and the amplitude has to be reduced for a fusion reactor. A novel method, i.e. applying m/n= 2/2 resonant magnetic perturbations (RMPs), is found to be able to reduce the sawtooth magnitude in J-TEXT tokamak experiments. The penetration of RMPs and formation of 2/2 locked island are found to be related to the reduction of sawtooth magnitude. With the available 2/2 RMP field, the sawtooth mitigation is reproducibly achieved with q a < 2.8 and n e < 2 × 1019 m-3 in J-TEXT.

Original language	English
Article number	126002
Journal	Nuclear Fusion
Volume	60
Issue number	12
DOIs	https://doi.org/10.1088/1741-4326/abae47
State	Published - Dec 2020

Keywords

2/2 island
resonant magnetic perturbation
sawtooth
tokamak plasma

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10.1088/1741-4326/abae47

Cite this

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title = "Reduction of sawtooth amplitude by resonant magnetic perturbation",

abstract = "Sawtooth crashes of large amplitude are detrimental to tokamak plasma confinement, and the amplitude has to be reduced for a fusion reactor. A novel method, i.e. applying m/n= 2/2 resonant magnetic perturbations (RMPs), is found to be able to reduce the sawtooth magnitude in J-TEXT tokamak experiments. The penetration of RMPs and formation of 2/2 locked island are found to be related to the reduction of sawtooth magnitude. With the available 2/2 RMP field, the sawtooth mitigation is reproducibly achieved with q a < 2.8 and n e < 2 × 1019 m-3 in J-TEXT.",

keywords = "2/2 island, resonant magnetic perturbation, sawtooth, tokamak plasma",

author = "Jianchao Li and Yonghua Ding and Qingquan Yu and Nengchao Wang and Da Li and Xiaoqing Zhang and Dongliang Han and Zhipeng Chen and Zhoujun Yang and Song Zhou and Wei Yan and Yunfeng Liang and Xiaolong Zhang and Xiaodong Lin and Huibin Sun and Xiang Gao and Jiangang Li",

note = "Publisher Copyright: {\textcopyright} 2020 IAEA, Vienna.",

year = "2020",

month = dec,

doi = "10.1088/1741-4326/abae47",

language = "英语",

volume = "60",

journal = "Nuclear Fusion",

issn = "0029-5515",

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TY - JOUR

T1 - Reduction of sawtooth amplitude by resonant magnetic perturbation

AU - Li, Jianchao

AU - Ding, Yonghua

AU - Yu, Qingquan

AU - Wang, Nengchao

AU - Li, Da

AU - Zhang, Xiaoqing

AU - Han, Dongliang

AU - Chen, Zhipeng

AU - Yang, Zhoujun

AU - Zhou, Song

AU - Yan, Wei

AU - Liang, Yunfeng

AU - Zhang, Xiaolong

AU - Lin, Xiaodong

AU - Sun, Huibin

AU - Gao, Xiang

AU - Li, Jiangang

PY - 2020/12

Y1 - 2020/12

N2 - Sawtooth crashes of large amplitude are detrimental to tokamak plasma confinement, and the amplitude has to be reduced for a fusion reactor. A novel method, i.e. applying m/n= 2/2 resonant magnetic perturbations (RMPs), is found to be able to reduce the sawtooth magnitude in J-TEXT tokamak experiments. The penetration of RMPs and formation of 2/2 locked island are found to be related to the reduction of sawtooth magnitude. With the available 2/2 RMP field, the sawtooth mitigation is reproducibly achieved with q a < 2.8 and n e < 2 × 1019 m-3 in J-TEXT.

AB - Sawtooth crashes of large amplitude are detrimental to tokamak plasma confinement, and the amplitude has to be reduced for a fusion reactor. A novel method, i.e. applying m/n= 2/2 resonant magnetic perturbations (RMPs), is found to be able to reduce the sawtooth magnitude in J-TEXT tokamak experiments. The penetration of RMPs and formation of 2/2 locked island are found to be related to the reduction of sawtooth magnitude. With the available 2/2 RMP field, the sawtooth mitigation is reproducibly achieved with q a < 2.8 and n e < 2 × 1019 m-3 in J-TEXT.

KW - 2/2 island

KW - resonant magnetic perturbation

KW - sawtooth

KW - tokamak plasma

UR - https://www.scopus.com/pages/publications/85092435642

U2 - 10.1088/1741-4326/abae47

DO - 10.1088/1741-4326/abae47

M3 - 文章

AN - SCOPUS:85092435642

SN - 0029-5515

VL - 60

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 12

M1 - 126002

ER -

Reduction of sawtooth amplitude by resonant magnetic perturbation

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Keywords

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