Magnetohydrodynamic effect of internal transport barrier on EAST tokamak

Yuqi CHU; Haiqing LIU; Shoubiao ZHANG; Liqing XU; Erzhong LI; Yinxian JIE; Hui LIAN; Tianfu ZHOU; Xi FENG; Xuexi ZHANG; Yunfei WANG; Xiang ZHU; Chenbin WU; Shouxin WANG; Yao YANG; K HANADA; Bo LYU; Yingying LI; Qing ZANG; EAST Team

doi:10.1088/2058-6272/ac2726

Plasma Science and Technology > 2022 > 24(3): 035102. > DOI: 10.1088/2058-6272/ac2726

Yuqi CHU, Haiqing LIU, Shoubiao ZHANG, Liqing XU, Erzhong LI, Yinxian JIE, Hui LIAN, Tianfu ZHOU, Xi FENG, Xuexi ZHANG, Yunfei WANG, Xiang ZHU, Chenbin WU, Shouxin WANG, Yao YANG, K HANADA, Bo LYU, Yingying LI, Qing ZANG, EAST Team. Magnetohydrodynamic effect of internal transport barrier on EAST tokamak[J]. Plasma Science and Technology, 2022, 24(3): 035102. DOI: 10.1088/2058-6272/ac2726

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Magnetohydrodynamic effect of internal transport barrier on EAST tokamak

1.
Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
2.
University of Science and Technology of China, Hefei 230026, People's Republic of China
3.
University of California, Los Angeles, California 90095, United States of America
4.
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan
5.
Advanced Energy Research Center, Shenzhen University, Shenzhen 518060, People's Republic of China
6.
Research Institute for Applied Mechanics, Kyushu University, Kasuga, Fukuoka 816-8580, Japan

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Author Bio:
Shoubiao ZHANG: E-mail: bszhang@ipp.ac.cn
⁷ See Ida et al 2018 (https://doi.org/10.1088/1361-6587/aa9b03) for the EAST Team.
Received Date: May 30, 2021
Revised Date: September 12, 2021
Accepted Date: September 14, 2021
Available Online: January 29, 2024
Published Date: March 08, 2022

Graphical Abstract

Abstract

Abstract

An internal transport barrier (ITB) can be formed on EAST in exploring high-parameter operation. Previous studies show that safety factor (q) profiles, Shafranov shift and magnetohydrodynamic behaviors could be helpful in ITB formation by suppressing anomalous transport. Recently, electron density evolution with high resolution demonstrates that fishbone could be dominant in electron density ITB formation and sustainment. The power threshold is low in the fishbone condition and the electron density profile is determined by traits of fishbone. Simulation shows that the low-k ion mode is suppressed by fishbone. Direct measurement of turbulence in the inner region shows that the internal kink mode could sustain an electron temperature ITB by suppressing the trapped electron mode. The multi-scale interaction between the kink mode and turbulence by current could be key in sustaining high-electron-temperature long-pulse operation.
- ITB,
- fishbone,
- kink mode,
- micro turbulence

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Acknowledgments

This work is supported by the National Key R&D Program of China (No. 2017YFE0301705). This work is also supported in part by the Key Program of Research and Development of Hefei Science Center, CAS (No. 2019HSC-KPRD001). This work is also supported by National Natural Science Foundation of China (Nos. 11975271 and 11675211). This work was partly supported by the Collaborative Research Program of the Research Institute for Applied Mechanics, Kyushu University.

References (44)

References

[1]	ITER Physics Basis Editors et al 1999 Nucl. Fusion 39 2137 doi: 10.1088/0029-5515/39/12/301
[2]	Gormezano C et al 1998 Phys. Rev. Lett. 80 5544 doi: 10.1103/PhysRevLett.80.5544
[3]	Joffrin E et al 2002 Nucl. Fusion 42 235 doi: 10.1088/0029-5515/42/3/302
[4]	Fujita T and the JT-60 Team 2003 Nucl. Fusion 43 1527 doi: 10.1088/0029-5515/43/12/001
[5]	Bell R E et al 1998 Phys. Rev. Lett. 81 1429 doi: 10.1103/PhysRevLett.81.1429
[6]	Greenfield C M et al 2000 Phys. Plasmas 7 1959 doi: 10.1063/1.874176
[7]	Quigley E D et al 2004 Nucl. Fusion 44 1189 doi: 10.1088/0029-5515/44/11/004
[8]	Hoang G T et al 2000 Phys. Rev. Lett. 84 4593 doi: 10.1103/PhysRevLett.84.4593
[9]	Yu D L et al 2016 Nucl. Fusion 56 056003 doi: 10.1088/0029-5515/56/5/056003
[10]	Baranov Y F et al 1999 Nucl. Fusion 39 1463 doi: 10.1088/0029-5515/39/10/308
[11]	Litaudon X et al 1999 Plasma Phys. Control. Fusion 41 A733 doi: 10.1088/0741-3335/41/3A/066
[12]	Fujisawa A et al 2004 Phys. Rev. Lett. 93 165002 doi: 10.1103/PhysRevLett.93.165002
[13]	Austin M E et al 2006 Phys. Plasmas 13 082502 doi: 10.1063/1.2245579
[14]	Maget P et al 2003 Plasma Phys. Control. Fusion 45 1385 doi: 10.1088/0741-3335/45/8/301
[15]	Fourment C et al 2003 Plasma Phys. Control. Fusion 45 233 doi: 10.1088/0741-3335/45/3/305
[16]	Long F F et al 2020 Nucl. Fusion 60 036008 doi: 10.1088/1741-4326/ab668c
[17]	Yang Y et al 2017 Plasma Phys. Control. Fusion 59 085003 doi: 10.1088/1361-6587/aa6f2a
[18]	Gao X and the EAST team 2018 Phys. Lett. A 382 1242 doi: 10.1016/j.physleta.2018.03.006
[19]	Wu M F et al 2020 Plasma Sci. Technol. 22 025102 doi: 10.1088/2058-6272/ab4f8a
[20]	Joffrin E et al 2003 Nucl. Fusion 43 1167 doi: 10.1088/0029-5515/43/10/018
[21]	Liu Z X et al 2020 Nucl. Fusion 60 122001 doi: 10.1088/1741-4326/abb146
[22]	Li J et al 2013 Nat. Phys. 9 817 doi: 10.1038/nphys2795
[23]	Wan B N et al 2015 Nucl. Fusion 55 104015 doi: 10.1088/0029-5515/55/10/104015
[24]	Liu F K et al 2015 Nucl. Fusion 55 123022 doi: 10.1088/0029-5515/55/12/123022
[25]	Hu C D 2015 Plasma Sci. Technol. 17 1 doi: 10.1088/1009-0630/17/1/01
[26]	Li Y Y et al 2014 Rev. Sci. Instrum. 85 11E428 doi: 10.1063/1.4890408
[27]	Zang Q et al 2011 Rev. Sci. Instrum. 82 063502 doi: 10.1063/1.3599039
[28]	Han X et al 2014 Rev. Sci. Instrum. 85 073506 doi: 10.1063/1.4891040
[29]	Liu H Q et al 2016 Rev. Sci. Instrum. 87 11D903 doi: 10.1063/1.4963378
[30]	Zhu X et al 2015 Plasma Sci. Technol. 17 733 doi: 10.1088/1009-0630/17/9/03
[31]	Qian J P et al 2017 Nucl. Fusion 57 036008 doi: 10.1088/1741-4326/aa4e58
[32]	Xu L Q et al 2015 Phys. Plasmas 22 122510 doi: 10.1063/1.4939020
[33]	Chen L et al 1984 Phys. Rev. Lett. 52 1122 doi: 10.1103/PhysRevLett.52.1122
[34]	Wong K L et al 2004 Nucl. Fusion 45 30 doi: 10.1088/0029-5515/45/1/004
[35]	Duong H H et al 1993 Nucl. Fusion 33 749 doi: 10.1088/0029-5515/33/5/I06
[36]	Staebler G M, Kinsey J E and Waltz R E 2005 Phys. Plasmas 12 102508 doi: 10.1063/1.2044587
[37]	Staebler G M et al 2007 Phys. Plasmas 14 055909 doi: 10.1063/1.2436852
[38]	Staebler G M et al 2013 Phys. Rev. Lett. 110 055003 doi: 10.1103/PhysRevLett.110.055003
[39]	Staebler G M et al 2013 Nucl. Fusion 53 113017 doi: 10.1088/0029-5515/53/11/113017
[40]	Feng X et al 2019 Rev. Sci. Instrum. 90 024704 doi: 10.1063/1.5075615
[41]	Lian H et al 2019 Rev. Sci. Instrum. 90 053501 doi: 10.1063/1.5089699
[42]	Ding W X et al 2003 Phys. Rev. Lett. 90 035002 doi: 10.1103/PhysRevLett.90.035002
[43]	Zhang T et al 2018 Plasma Sci. Technol. 20 115101 doi: 10.1088/2058-6272/aac9b5
[44]	Wang W X et al 2019 Nucl. Fusion 59 084002 doi: 10.1088/1741-4326/ab266d

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