Estimation of magnetic island width by the fluctuations of electron cyclotron emission radiometer on J-TEXT

Bowen RUAN (阮博文); Zhoujun YANG (杨州军); Xiaoming PAN (潘晓明); Hao ZHOU (周豪); Fengqi CHANG (常风岐); Jing ZHOU (周静)

doi:10.1088/2058-6272/aae382

Plasma Science and Technology > 2019 > 21(1): 15102-015102. > DOI: 10.1088/2058-6272/aae382

Bowen RUAN (阮博文), Zhoujun YANG (杨州军), Xiaoming PAN (潘晓明), Hao ZHOU (周豪), Fengqi CHANG (常风岐), Jing ZHOU (周静). Estimation of magnetic island width by the fluctuations of electron cyclotron emission radiometer on J-TEXT[J]. Plasma Science and Technology, 2019, 21(1): 15102-015102. DOI: 10.1088/2058-6272/aae382

Citation:

PDF (1256 KB)

Estimation of magnetic island width by the fluctuations of electron cyclotron emission radiometer on J-TEXT

International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China

Funds: This work is supported by the National Magnetic Confinement Fusion Program of China (Nos. 2015GB120003 and 2014GB108001).

More Information

Received Date: June 13, 2018

Graphical Abstract

Abstract

Abstract

The width of a magnetic island is an important parameter for the quantitative analysis of magnetohydrodynamic-related physics. An electron cyclotron emission radiometer (ECE) is a powerful tool that can be used to obtain this width, which can usually be determined from the flat temperature distribution at the O-point phase or the maxima temperature perturbation. An improved method to estimate the width of a magnetic island is proposed in this paper, and it is independent of calibration. With this method and the existing 24-channel ECE system, the width of a rotation magnetic island can be estimated. Additionally, by filtering the fluctuation ECE signal, the evolution of the magnetic island can be obtained. The results of this method are consistent with those of the integrated magnetic probe signals, which represent the relative change of the magnetic island.
- magnetic island width,
- ECE,
- relative temperature perturbation,
- J-TEXT tokamak

FullText(HTML)

References (13)

References

[1]	Igochine V 2015 Active Control of Magneto-Hydrodynamic Instabilities in Hot Plasmas (Berlin: Springer)
[2]	Kobuchi T et al 2008 J. Phys. Conf. Ser. 123 012021
[3]	Fonseca A M M et al 2005 IEEE Trans Plasma Sci. 33 2046
[4]	Han X et al 2013 Plasma Sci. Technol. 15 217
[5]	Igochine V et al 2017 Nucl. Fusion 57 036015
[6]	Igochine V et al 2014 Phys. Plasmas 21 603
[7]	Zhuang G et al 2011 Nucl. Fusion 51 094020
[8]	Yang Z J et al 2012 Rev. Sci. Instrum. 83 10E313
[9]	Yang Z J et al 2016 Rev. Sci. Instrum. 87 11E112
[10]	Shi Z B et al 2014 Rev. Sci. Instrum. 85 023510
[11]	Huang X L et al 2011 Nucl. Fusion Plasma Phys. 31 193 (in Chinese)
[12]	Fitzpatrick R 1995 Phys. Plasmas 2 825
[13]	Meskat J P et al 2001 Plasma Phys. Control. Fusion 43 1325

[1]	Long CHEN, Zuojun CUI, Weifu GAO, Ping DUAN, Zichen KAN, Congqi TAN, Junyu CHEN. Effect of ion stress on properties of magnetized plasma sheath[J]. Plasma Science and Technology, 2024, 26(2): 025001. DOI: 10.1088/2058-6272/ad0d4f
[2]	Jinkui FENG (冯金奎), Decheng WANG (王德成), Changyong SHAO (邵长勇), Lili ZHANG (张丽丽), Xin TANG (唐欣). Effects of cold plasma treatment on alfalfa seed growth under simulated drought stress[J]. Plasma Science and Technology, 2018, 20(3): 35505-035505. DOI: 10.1088/2058-6272/aa9b27
[3]	Shanwen ZHANG (张善文), Yuntao SONG (宋云涛), Linlin TANG (汤淋淋), Zhongwei WANG (王忠伟), Xiang JI (戢翔), Shuangsong DU (杜双松). Electromagnetic–thermal–structural coupling analysis of the ITER edge localized mode coil with fiexible supports[J]. Plasma Science and Technology, 2017, 19(5): 55601-055601. DOI: 10.1088/2058-6272/aa57f4
[4]	WANG Xianwei(汪献伟), XIE Fei(谢飞), JIN Huan(金环). Calculation and Optimization of ITER Upper VS Feeder Under an Electromagnetic Load[J]. Plasma Science and Technology, 2014, 16(11): 1063-1067. DOI: 10.1088/1009-0630/16/11/12
[5]	ZHANG Shanwen(张善文), SONG Yuntao(宋云涛), WANG Zhongwei(王忠伟), LU Su(卢速), JI Xiang(戢翔), DU Shuangsong(杜双松), LIU Xufeng(刘旭峰), FENG Changle(冯昌乐), YANG Hong(杨洪), WANG Songke(王松可), LUO Zhiren(罗志仁). Rapid Thermal-Hydraulic Analysis and Design Optimization of ITER Upper ELM Coils[J]. Plasma Science and Technology, 2014, 16(10): 978-983. DOI: 10.1088/1009-0630/16/10/14
[6]	ZHANG Shanwen(张善文), SONG Yuntao(宋云涛), WANG Zhongwei(王忠伟), LU Su(卢速), JI Xiang(戢翔), DU Shuangsong(杜双松), LIU Xufeng(刘旭峰), FENG Changle(冯昌乐), YANG Hong(杨洪), WANG Songke(王松可), LUO Zhiren(罗志仁). Mechanical Analysis and Optimization of ITER Upper ELM Coil & Feeder[J]. Plasma Science and Technology, 2014, 16(8): 794-799. DOI: 10.1088/1009-0630/16/8/11
[7]	KANG Weishan(康伟山), YUAN Tao(袁涛), SUN Qian(孙倩), WU Jihong(吴继红), CHEN Jiming(谌继明). Numerical Analyses of Electromagnetic Forces on the ITER Blanket Module Shield Block During Major Disruptions[J]. Plasma Science and Technology, 2014, 16(7): 701-705. DOI: 10.1088/1009-0630/16/7/12
[8]	CEN Yishun (岑义顺), LI Qiang (李强), DING Yonghua (丁永华), CAI Lijun (蔡立君), et al.. Stress and Thermal Analysis of the In-Vessel RMP Coils in HL-2M[J]. Plasma Science and Technology, 2013, 15(9): 939-944. DOI: 10.1088/1009-0630/15/9/20
[9]	LEI Mingzhun (雷明准), SONG Yuntao (宋云涛), WANG Songke (王松可), WANG Xianwei (汪献伟). Electromagnetic and Stress Analyses of the ITER Equatorial Thermal Shield[J]. Plasma Science and Technology, 2013, 15(8): 830-833. DOI: 10.1088/1009-0630/15/8/22
[10]	ZHU Dahuan (朱大焕), WANG Kun (王坤), WANG Xianping (王先平), CHEN Junling (陈俊凌), FANG Qianfeng (方前锋). Analysis of residual thermal stress in CVD-W coating as plasma facing material[J]. Plasma Science and Technology, 2012, 14(7): 656-660. DOI: 10.1088/1009-0630/14/7/20