Lower hybrid current drive experiments and improved performance on the HT-7 superconducting tokamak

Guangli Kuang; Yuexiou Liu; Jiafang Shan; Weihua Xu; Xiangqin Zhang; Dengcheng Liu; Fukun Liu; Yubao Zhu; Cheng Zhang; Guanghua Zheng; Junshuan Wu; Jianan Lin; Bojiang Ding; Handong Xu; Yude Fang; Jiangang Li; Jiarong Luo; Xiaodong Zhang; Baonian Wan; Qingchu Zhao; Jianshan Mao; Xiang Gao; Shouyin Zhang; Chengfu Li; Xuemao Gu; Pinjian Qing; Hengyu Fan; Shengxia Liu; Bili Ling; Bolong Ding; Yahong Li; Zhengwei Wu; Yinxian Jie; Sheng Liu; Jikang Xie; Yuanxi Wan

doi:10.1088/0029-5515/39/11Y/317

Lower hybrid current drive experiments and improved performance on the HT-7 superconducting tokamak

Guangli Kuang
, Yuexiou Liu
, Jiafang Shan
, Weihua Xu
, Xiangqin Zhang
, Dengcheng Liu
, Fukun Liu
, Yubao Zhu
, Cheng Zhang
, Guanghua Zheng
, Junshuan Wu
, Jianan Lin
, Bojiang Ding
, Handong Xu
, Yude Fang
, Jiangang Li
, Jiarong Luo
, Xiaodong Zhang
, Baonian Wan
, Qingchu Zhao

Jianshan Mao, Xiang Gao, Shouyin Zhang, Chengfu Li, Xuemao Gu, Pinjian Qing, Hengyu Fan, Shengxia Liu, Bili Ling, Bolong Ding, Yahong Li, Zhengwei Wu, Yinxian Jie, Sheng Liu, Jikang Xie, Yuanxi Wan

School of Electrical Engineering

CAS - Institute of Plasma Physics

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

53 Scopus citations

Abstract

The feedback control system to control plasma current and position on the HT-7 superconducting tokamak was greatly improved in early 1998. Lower hybrid current drive (LHCD) experiments with the improved control system were performed to sustain long pulse discharges and to improve plasma confinement. Partial non-inductive current drive and full non-inductive current drive for several seconds by means of LHCD were demonstrated. It was observed that plasma confinement could be considerably improved by LHCD. Experimental evidence suggests that this improvement during the LHCD phase could be due to the modification of the current profile in the outer region of the plasma. MHD modes (especially m = 2) seem unstable with such a current profile. The EFIT code was modified for the reconstruction of the magnetic surfaces in HT-7 and a test computation was performed.

Original language	English
Pages (from-to)	1769-1774
Number of pages	6
Journal	Nuclear Fusion
Volume	39
Issue number	Special Issu
DOIs	https://doi.org/10.1088/0029-5515/39/11Y/317
State	Published - 1999

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Kuang, G., Liu, Y., Shan, J., Xu, W., Zhang, X., Liu, D., Liu, F., Zhu, Y., Zhang, C., Zheng, G., Wu, J., Lin, J., Ding, B., Xu, H., Fang, Y., Li, J., Luo, J., Zhang, X., Wan, B., ... Wan, Y. (1999). Lower hybrid current drive experiments and improved performance on the HT-7 superconducting tokamak. Nuclear Fusion, 39(Special Issu), 1769-1774. https://doi.org/10.1088/0029-5515/39/11Y/317

@article{d64a56ef716847ffa30923f3ff373999,

title = "Lower hybrid current drive experiments and improved performance on the HT-7 superconducting tokamak",

abstract = "The feedback control system to control plasma current and position on the HT-7 superconducting tokamak was greatly improved in early 1998. Lower hybrid current drive (LHCD) experiments with the improved control system were performed to sustain long pulse discharges and to improve plasma confinement. Partial non-inductive current drive and full non-inductive current drive for several seconds by means of LHCD were demonstrated. It was observed that plasma confinement could be considerably improved by LHCD. Experimental evidence suggests that this improvement during the LHCD phase could be due to the modification of the current profile in the outer region of the plasma. MHD modes (especially m = 2) seem unstable with such a current profile. The EFIT code was modified for the reconstruction of the magnetic surfaces in HT-7 and a test computation was performed.",

author = "Guangli Kuang and Yuexiou Liu and Jiafang Shan and Weihua Xu and Xiangqin Zhang and Dengcheng Liu and Fukun Liu and Yubao Zhu and Cheng Zhang and Guanghua Zheng and Junshuan Wu and Jianan Lin and Bojiang Ding and Handong Xu and Yude Fang and Jiangang Li and Jiarong Luo and Xiaodong Zhang and Baonian Wan and Qingchu Zhao and Jianshan Mao and Xiang Gao and Shouyin Zhang and Chengfu Li and Xuemao Gu and Pinjian Qing and Hengyu Fan and Shengxia Liu and Bili Ling and Bolong Ding and Yahong Li and Zhengwei Wu and Yinxian Jie and Sheng Liu and Jikang Xie and Yuanxi Wan",

year = "1999",

doi = "10.1088/0029-5515/39/11Y/317",

language = "英语",

volume = "39",

pages = "1769--1774",

journal = "Nuclear Fusion",

issn = "0029-5515",

publisher = "IOP Publishing Ltd.",

number = "Special Issu",

}

Kuang, G, Liu, Y, Shan, J, Xu, W, Zhang, X, Liu, D, Liu, F, Zhu, Y, Zhang, C, Zheng, G, Wu, J, Lin, J, Ding, B, Xu, H, Fang, Y, Li, J, Luo, J, Zhang, X, Wan, B, Zhao, Q, Mao, J, Gao, X, Zhang, S, Li, C, Gu, X, Qing, P, Fan, H, Liu, S, Ling, B, Ding, B, Li, Y, Wu, Z, Jie, Y, Liu, S, Xie, J & Wan, Y 1999, 'Lower hybrid current drive experiments and improved performance on the HT-7 superconducting tokamak', Nuclear Fusion, vol. 39, no. Special Issu, pp. 1769-1774. https://doi.org/10.1088/0029-5515/39/11Y/317

TY - JOUR

T1 - Lower hybrid current drive experiments and improved performance on the HT-7 superconducting tokamak

AU - Kuang, Guangli

AU - Liu, Yuexiou

AU - Shan, Jiafang

AU - Xu, Weihua

AU - Zhang, Xiangqin

AU - Liu, Dengcheng

AU - Liu, Fukun

AU - Zhu, Yubao

AU - Zhang, Cheng

AU - Zheng, Guanghua

AU - Wu, Junshuan

AU - Lin, Jianan

AU - Ding, Bojiang

AU - Xu, Handong

AU - Fang, Yude

AU - Li, Jiangang

AU - Luo, Jiarong

AU - Zhang, Xiaodong

AU - Wan, Baonian

AU - Zhao, Qingchu

AU - Mao, Jianshan

AU - Gao, Xiang

AU - Zhang, Shouyin

AU - Li, Chengfu

AU - Gu, Xuemao

AU - Qing, Pinjian

AU - Fan, Hengyu

AU - Liu, Shengxia

AU - Ling, Bili

AU - Ding, Bolong

AU - Li, Yahong

AU - Wu, Zhengwei

AU - Jie, Yinxian

AU - Liu, Sheng

AU - Xie, Jikang

AU - Wan, Yuanxi

PY - 1999

Y1 - 1999

N2 - The feedback control system to control plasma current and position on the HT-7 superconducting tokamak was greatly improved in early 1998. Lower hybrid current drive (LHCD) experiments with the improved control system were performed to sustain long pulse discharges and to improve plasma confinement. Partial non-inductive current drive and full non-inductive current drive for several seconds by means of LHCD were demonstrated. It was observed that plasma confinement could be considerably improved by LHCD. Experimental evidence suggests that this improvement during the LHCD phase could be due to the modification of the current profile in the outer region of the plasma. MHD modes (especially m = 2) seem unstable with such a current profile. The EFIT code was modified for the reconstruction of the magnetic surfaces in HT-7 and a test computation was performed.

AB - The feedback control system to control plasma current and position on the HT-7 superconducting tokamak was greatly improved in early 1998. Lower hybrid current drive (LHCD) experiments with the improved control system were performed to sustain long pulse discharges and to improve plasma confinement. Partial non-inductive current drive and full non-inductive current drive for several seconds by means of LHCD were demonstrated. It was observed that plasma confinement could be considerably improved by LHCD. Experimental evidence suggests that this improvement during the LHCD phase could be due to the modification of the current profile in the outer region of the plasma. MHD modes (especially m = 2) seem unstable with such a current profile. The EFIT code was modified for the reconstruction of the magnetic surfaces in HT-7 and a test computation was performed.

UR - https://www.scopus.com/pages/publications/0141689550

U2 - 10.1088/0029-5515/39/11Y/317

DO - 10.1088/0029-5515/39/11Y/317

M3 - 文章

AN - SCOPUS:0141689550

SN - 0029-5515

VL - 39

SP - 1769

EP - 1774

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - Special Issu

ER -

Lower hybrid current drive experiments and improved performance on the HT-7 superconducting tokamak

Abstract

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