Realization of thousand-second improved confinement plasma with Super I-mode in Tokamak EAST

Song, Yuntao; Zou, Xiaolan; Gong, Xianzu; Becoulet, Alain; Buttery, Richard; Bonoli, Paul; Hoang, Tuong; Maingi, Rajesh; Qian, Jinping; Zhong, Xiaoming; Liu, Adi; Li, Erzhong; Ding, Rui; Huang, Juan; Zang, Qing; Liu, Haiqing; Wang, Liang; Zhang, Ling; Li, Guoqiang; Sun, Youwen; Garofalo, Andrea; Osborne, Tom; Leonard, Tony; Baek, Seung Gyou; Wallace, Greg; Xu, Liqing; Zhang, Bin; Wang, Shouxin; Chu, Yuqi; Zhang, Tao; Duan, Yanmin; Lian, Hui; Zhang, Xuexi; Jin, Yifei; Zeng, Long; Lyu, Bo; Xiao, Binjia; Huang, Yao; Wang, Yong; Shen, Biao; Xiang, Nong; Wu, Yu; Wu, Jiefeng; Wang, Xiaojie; Ding, Bojiang; Li, Miaohui; Zhang, Xinjun; Qin, Chengming; Xi, Weibin; Zhang, Jian; Huang, Liansheng; Yao, Damao; Hu, Yanlan; Zuo, Guizhong; Yuan, Qiping; Zhou, Zhiwei; Wang, Mao; Xu, Handong; Xie, Yahong; Wang, Zhengchu; Chen, Junling; Xu, Guosheng; Hu, Jiansheng; Lu, Kun; Liu, Fukun; Wu, Xinchao; Wan, Baonian; Li, Jiangang

doi:10.1126/sciadv.abq5273

Realization of thousand-second improved confinement plasma with Super I-mode in Tokamak EAST

Journal Article · Fri Jan 06 00:00:00 EST 2023 · Science Advances

DOI:https://doi.org/10.1126/sciadv.abq5273· OSTI ID:1914094

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Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China.
CEA, IRFM, F-13108 St Paul Les Durance, France.
General Atomics, PO Box 85608, San Diego, CA 92186-5608, USA.
Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
Princeton Plasma Physics Laboratory, Princeton, NJ 08543, USA.
University of Science and Technology of China, Hefei, Anhui 230026, China.

Mastering nuclear fusion, which is an abundant, safe, and environmentally competitive energy, is a great challenge for humanity. Tokamak represents one of the most promising paths toward controlled fusion. Obtaining a high-performance, steady-state, and long-pulse plasma regime remains a critical issue. Recently, a big breakthrough in steady-state operation was made on the Experimental Advanced Superconducting Tokamak (EAST). A steady-state plasma with a world-record pulse length of 1056 s was obtained, where the density and the divertor peak heat flux were well controlled, with no core impurity accumulation, and a new high-confinement and self-organizing regime (Super I-mode = I-mode + e-ITB) was discovered and demonstrated. These achievements contribute to the integration of fusion plasma technology and physics, which is essential to operate next-step devices.

View Accepted Manuscript (DOE)

Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: China National Funds for Distinguished Young Scientists; EAST Performance Improvement project; National Key R&D Program of China; USDOE

Contributing Organization:: EAST Team

Grant/Contract Number:: AC02-09CH11466; FC02-04ER54698; SC0010492; SC0010685

OSTI ID:: 1914094

Journal Information:: Science Advances, Journal Name: Science Advances Journal Issue: 1 Vol. 9; ISSN 2375-2548

Publisher:: AAASCopyright Statement

Country of Publication:: United States

Language:: English

References (67)

Plasma–tungsten interactions in experimental advanced superconducting tokamak (EAST) Ding, Fang; Luo, Guang-Nan; Chen, Xiahua Tungsten, Vol. 1, Issue 2 https://doi.org/10.1007/s42864-019-00019-4	journal	June 2019
ELM energy and particle losses and their extrapolation to burning plasma experiments Loarte, A.; Saibene, G.; Sartori, R. Journal of Nuclear Materials, Vol. 313-316 https://doi.org/10.1016/S0022-3115(02)01398-3	journal	March 2003
The Experimental Advanced Superconducting Tokamak Li, Jiangang; Wan, Yuanxi Engineering, Vol. 7, Issue 11 https://doi.org/10.1016/j.eng.2021.10.004	journal	November 2021
An overview of the EAST project Wu, Songtao Fusion Engineering and Design, Vol. 82, Issue 5-14 https://doi.org/10.1016/j.fusengdes.2007.03.012	journal	October 2007
EAST plasma control system Xiao, B. J.; Humphreys, D. A.; Walker, M. L. Fusion Engineering and Design, Vol. 83, Issue 2-3 https://doi.org/10.1016/j.fusengdes.2007.12.028	journal	April 2008
A simple apparatus for the injection of lithium aerosol into the scrape-off layer of fusion research devices Mansfield, D. K.; Roquemore, A. L.; Schneider, H. Fusion Engineering and Design, Vol. 85, Issue 6 https://doi.org/10.1016/j.fusengdes.2010.08.033	journal	November 2010
Plasma facing components of EAST Song, Y. T.; Peng, X. B.; Xie, H. Fusion Engineering and Design, Vol. 85, Issue 10-12 https://doi.org/10.1016/j.fusengdes.2010.09.020	journal	December 2010
Overview of EU DEMO design and R&D activities Federici, G.; Kemp, R.; Ward, D. Fusion Engineering and Design, Vol. 89, Issue 7-8 https://doi.org/10.1016/j.fusengdes.2014.01.070	journal	October 2014
Development of 4.6GHz lower hybrid current drive system for steady state and high performance plasma in EAST Liu, F. K.; Li, J. G.; Shan, J. F. Fusion Engineering and Design, Vol. 113 https://doi.org/10.1016/j.fusengdes.2016.10.020	journal	December 2016
Upgrade of EAST plasma control system for steady-state advanced operation Yuan, Q. P.; Tang, J. Y.; Penaflor, B. Fusion Engineering and Design, Vol. 129 https://doi.org/10.1016/j.fusengdes.2018.02.079	journal	April 2018
Progress on in-vessel poloidal field coils optimization design for alternative divertor configuration studies on the EAST tokamak Xiao, B. J.; Luo, Z. P.; Li, H. Fusion Engineering and Design, Vol. 146 https://doi.org/10.1016/j.fusengdes.2019.03.126	journal	September 2019
ECRH system upgrade design using dual frequency gyrotrons for EAST Xu, Handong; Xu, Weiye; Wu, Dajun Fusion Engineering and Design, Vol. 164 https://doi.org/10.1016/j.fusengdes.2020.112222	journal	March 2021
Recent analysis of key plasma wall interactions issues for ITER Roth, Joachim; Tsitrone, E.; Loarte, A. Journal of Nuclear Materials, Vol. 390-391 https://doi.org/10.1016/j.jnucmat.2009.01.037	journal	June 2009
First results of lithium experiments on EAST and HT-7 Zuo, G. Z.; Hu, J. S.; Li, J. G. Journal of Nuclear Materials, Vol. 415, Issue 1 https://doi.org/10.1016/j.jnucmat.2010.08.052	journal	August 2011
Lithium coating for H-mode and high performance plasmas on EAST in ASIPP Zuo, G. Z.; Hu, J. S.; Li, J. G. Journal of Nuclear Materials, Vol. 438 https://doi.org/10.1016/j.jnucmat.2013.01.014	journal	July 2013
A space-resolved extreme ultraviolet spectrometer for radial profile measurement of tungsten ions in the Experimental Advanced Superconducting Tokamak Zhang, Ling; Morita, Shigeru; Wu, Zhenwei Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 916 https://doi.org/10.1016/j.nima.2018.11.082	journal	February 2019
Results from core-edge experiments in high Power, high performance plasmas on DIII-D Petrie, T. W.; Fenstermacher, M. E.; Holcomb, C. T. Nuclear Materials and Energy, Vol. 12 https://doi.org/10.1016/j.nme.2016.10.029	journal	August 2017
A long-pulse high-confinement plasma regime in the Experimental Advanced Superconducting Tokamak Li, J.; Guo, H. Y.; Wan, B. N. Nature Physics, Vol. 9, Issue 12 https://doi.org/10.1038/nphys2795	journal	November 2013
Recent progress of the development of a long pulse 140GHz ECRH system on EAST Xu, Handong; Wang, Xiaojie; Zhang, Jian EPJ Web of Conferences, Vol. 203 https://doi.org/10.1051/epjconf/201920304002	journal	January 2019
Upgraded multipulse laser and multipoint Thomson scattering diagnostics on EAST Zang, Qing; Zhao, Junyu; Yang, Li Review of Scientific Instruments, Vol. 82, Issue 6 https://doi.org/10.1063/1.3599039	journal	June 2011
Microwave Doppler reflectometer system in the Experimental Advanced Superconducting Tokamak Zhou, C.; Liu, A. D.; Zhang, X. H. Review of Scientific Instruments, Vol. 84, Issue 10 https://doi.org/10.1063/1.4825344	journal	October 2013
Design and characterization of a 32-channel heterodyne radiometer for electron cyclotron emission measurements on experimental advanced superconducting tokamak Han, X.; Liu, X.; Liu, Y. Review of Scientific Instruments, Vol. 85, Issue 7 https://doi.org/10.1063/1.4891040	journal	July 2014
2-D soft x-ray arrays in the EAST Chen, Kaiyun; Xu, Liqing; Hu, Liqun Review of Scientific Instruments, Vol. 87, Issue 6 https://doi.org/10.1063/1.4953837	journal	June 2016
Upgrade of Langmuir probe diagnostic in ITER-like tungsten mono-block divertor on experimental advanced superconducting tokamak Xu, J. C.; Wang, L.; Xu, G. S. Review of Scientific Instruments, Vol. 87, Issue 8 https://doi.org/10.1063/1.4960181	journal	August 2016
Initial measurements of plasma current and electron density profiles using a polarimeter/interferometer (POINT) for long pulse operation in EAST (invited) Liu, H. Q.; Qian, J. P.; Jie, Y. X. Review of Scientific Instruments, Vol. 87, Issue 11 https://doi.org/10.1063/1.4963378	journal	October 2016
Five-channel tunable W-band Doppler backscattering system in the experimental advanced superconducting tokamak Feng, X.; Liu, A. D.; Zhou, C. Review of Scientific Instruments, Vol. 90, Issue 2 https://doi.org/10.1063/1.5075615	journal	February 2019
Challenges for plasma-facing components in nuclear fusion Linke, Jochen; Du, Juan; Loewenhoff, Thorsten Matter and Radiation at Extremes, Vol. 4, Issue 5 https://doi.org/10.1063/1.5090100	journal	September 2019
Deuterium–tritium plasmas in the Joint European Torus (JET): Behavior and implications Gibson, A. Physics of Plasmas, Vol. 5, Issue 5 https://doi.org/10.1063/1.872854	journal	May 1998
Overview of DT results from TFTR Bell, M. G.; McGuire, K. M.; Arunasalam, V. Nuclear Fusion, Vol. 35, Issue 12 https://doi.org/10.1088/0029-5515/35/12/I02	journal	December 1995
H mode confinement in Alcator C-Mod Greenwald, M.; Boivin, R. L.; Bombarda, F. Nuclear Fusion, Vol. 37, Issue 6 https://doi.org/10.1088/0029-5515/37/6/I07	journal	June 1997
Chapter 1: Overview and summary Editors, ITER Physics Basis; Co-Chairs, ITER Physics Expert Group Chairs an; Unit, ITER Joint Central Team and Physics Nuclear Fusion, Vol. 39, Issue 12 https://doi.org/10.1088/0029-5515/39/12/301	journal	December 1999
Chapter 2: Plasma confinement and transport Transport, ITER Physics Expert Group on Confin; Database, ITER Physics Expert Group on Confin; Editors, ITER Physics Basis Nuclear Fusion, Vol. 39, Issue 12 https://doi.org/10.1088/0029-5515/39/12/302	journal	December 1999
Overview of ITER physics deuterium-tritium experiments in JET Jacquinot, J.; Bhatnagar, V. P.; Cordey, J. G. Nuclear Fusion, Vol. 39, Issue 2 https://doi.org/10.1088/0029-5515/39/2/307	journal	February 1999
JT-60U high performance regimes Ishida, S.; Team, Jt-60 Nuclear Fusion, Vol. 39, Issue 9Y https://doi.org/10.1088/0029-5515/39/9Y/301	journal	September 1999
Recent fully non-inductive operation results in Tore Supra with 6 min, 1 GJ plasma discharges Houtte, D. van; Martin, G.; Bécoulet, A. Nuclear Fusion, Vol. 44, Issue 5 https://doi.org/10.1088/0029-5515/44/5/L01	journal	May 2004
Chapter 6: Steady state operation Gormezano, C.; Sips, A. C. C.; Luce, T. C. Nuclear Fusion, Vol. 47, Issue 6 https://doi.org/10.1088/0029-5515/47/6/S06	journal	June 2007
Recent experiments in the EAST and HT-7 superconducting tokamaks Wan, Baonian Nuclear Fusion, Vol. 49, Issue 10 https://doi.org/10.1088/0029-5515/49/10/104011	journal	September 2009
I-mode: an H-mode energy confinement regime with L-mode particle transport in Alcator C-Mod Whyte, D. G.; Hubbard, A. E.; Hughes, J. W. Nuclear Fusion, Vol. 50, Issue 10 https://doi.org/10.1088/0029-5515/50/10/105005	journal	August 2010
Validation of the ITER-relevant passive-active-multijunction LHCD launcher on long pulses in Tore Supra Ekedahl, A.; Delpech, L.; Goniche, M. Nuclear Fusion, Vol. 50, Issue 11 https://doi.org/10.1088/0029-5515/50/11/112002	journal	September 2010
Study on H-mode access at low density with lower hybrid current drive and lithium-wall coatings on the EAST superconducting tokamak Xu, G. S.; Wan, B. N.; Li, J. G. Nuclear Fusion, Vol. 51, Issue 7 https://doi.org/10.1088/0029-5515/51/7/072001	journal	June 2011
Approaches towards long-pulse divertor operations on EAST by active control of plasma–wall interactions Guo, H. Y.; Li, J.; Gong, X. Z. Nuclear Fusion, Vol. 54, Issue 1 https://doi.org/10.1088/0029-5515/54/1/013002	journal	November 2013
Plasma facing components for the Experimental Advanced Superconducting Tokamak and CFETR Li, Jiangang; Luo, Guangnan; Ding, Rui Physica Scripta, Vol. T159 https://doi.org/10.1088/0031-8949/2014/T159/014001	journal	April 2014
Some Criteria for a Power Producing Thermonuclear Reactor Lawson, J. D. Proceedings of the Physical Society. Section B, Vol. 70, Issue 1 https://doi.org/10.1088/0370-1301/70/1/303	journal	January 1957
H-mode power threshold and transition in ASDEX Upgrade Ryter, F.; Suttrop, W.; Brüsehaber, B. Plasma Physics and Controlled Fusion, Vol. 40, Issue 5 https://doi.org/10.1088/0741-3335/40/5/032	journal	May 1998
Wall pumping and saturation in divertor tokamaks Asakura, Nobuyuki Plasma Physics and Controlled Fusion, Vol. 46, Issue 12B https://doi.org/10.1088/0741-3335/46/12B/029	journal	November 2004
The technology and science of steady-state operation in magnetically confined plasmas Bécoulet, A.; Hoang, G. T. Plasma Physics and Controlled Fusion, Vol. 50, Issue 12 https://doi.org/10.1088/0741-3335/50/12/124055	journal	November 2008
Imaging x-ray crystal spectrometer on EAST Shi, Yuejiang; Wang, Fudi; Wan, Baonian Plasma Physics and Controlled Fusion, Vol. 52, Issue 8 https://doi.org/10.1088/0741-3335/52/8/085014	journal	July 2010
Density Profile and Fluctuation Measurements by Microwave Reflectometry on EAST Zhang, Shoubiao; Gao, Xiang; Ling, Bili Plasma Science and Technology, Vol. 16, Issue 4 https://doi.org/10.1088/1009-0630/16/4/02	journal	April 2014
Overview of Development Status for EAST-NBI System Hu, Chundong; Xie, Yahong; Xie, Yuanlai Plasma Science and Technology, Vol. 17, Issue 10 https://doi.org/10.1088/1009-0630/17/10/02	journal	October 2015
Reconstruction of the Density Profile for the EAST Tokamak Based on Polarimeter/Interferometer and Microwave Reflectometer Systems Zhu, Xiang; Zeng, Long; Liu, Haiqing Plasma Science and Technology, Vol. 17, Issue 9 https://doi.org/10.1088/1009-0630/17/9/03	journal	September 2015
The influence of plasma-surface interaction on the performance of tungsten at the ITER divertor vertical targets De Temmerman, G.; Hirai, T.; Pitts, R. A. Plasma Physics and Controlled Fusion, Vol. 60, Issue 4 https://doi.org/10.1088/1361-6587/aaaf62	journal	March 2018
EAST equilibrium current profile reconstruction using polarimeter-interferometer internal measurement constraints Qian, J. P.; Lao, L. L.; Liu, H. Q. Nuclear Fusion, Vol. 57, Issue 3 https://doi.org/10.1088/1741-4326/aa4e58	journal	December 2016
Overview of the present progress and activities on the CFETR Wan, Yuanxi; Li, Jiangang; Liu, Yong Nuclear Fusion, Vol. 57, Issue 10 https://doi.org/10.1088/1741-4326/aa686a	journal	June 2017
Control of hydrogen content and fuel recycling for long pulse high performance plasma operation in EAST Yu, Y. W.; Hu, J. S.; Zuo, G. Z. Nuclear Fusion, Vol. 59, Issue 12 https://doi.org/10.1088/1741-4326/ab3ead	journal	October 2019
Power balance investigation in long-pulse high-performance discharges with ITER-like tungsten divertor on EAST Liu, Y. K.; Gao, X.; Hanada, K. Nuclear Fusion, Vol. 60, Issue 9 https://doi.org/10.1088/1741-4326/aba0c6	journal	August 2020
Experimental identification of edge temperature ring oscillation and alternating turbulence transitions near the pedestal top for sustaining stationary I-mode Liu, A. D.; Zou, X. L.; Han, M. K. Nuclear Fusion, Vol. 60, Issue 12 https://doi.org/10.1088/1741-4326/abb14a	journal	September 2020
Operating a full tungsten actively cooled tokamak: overview of WEST first phase of operation Bucalossi, J.; Achard, J.; Agullo, O. Nuclear Fusion, Vol. 62, Issue 4 https://doi.org/10.1088/1741-4326/ac2525	journal	February 2022
Advances in the long-pulse steady-state high beta H-mode scenario with active controls of divertor heat and particle fluxes in EAST Wan, B. N.; Gong, X. Z.; Liang, Y. Nuclear Fusion, Vol. 62, Issue 4 https://doi.org/10.1088/1741-4326/ac2993	journal	February 2022
Characterization of pedestal burst instabilities during I-mode to H-mode transition in the EAST tokamak Zhong, X. M.; Zou, X. L.; Liu, A. D. Nuclear Fusion, Vol. 62, Issue 6 https://doi.org/10.1088/1741-4326/ac60e9	journal	April 2022
First experimental results with new ICRF antenna in EAST Zhang, X. J.; Yang, H.; Qin, C. M. Nuclear Fusion, Vol. 62, Issue 8 https://doi.org/10.1088/1741-4326/ac7657	journal	June 2022
Reconstruction and operation of the helium purification system in the cryogenic system for EAST Tokamak Zhou, Z. W.; Zhang, Q. Y.; Zhu, P. IOP Conference Series: Materials Science and Engineering, Vol. 1240, Issue 1 https://doi.org/10.1088/1757-899X/1240/1/012070	journal	May 2022
Fault Modes and Criticality Analysis of the EAST cryogenic system based on operating experience over 10 years Zhou, Z. W.; Zhang, Q. Y.; Zhu, Z. G. IOP Conference Series: Materials Science and Engineering, Vol. 502 https://doi.org/10.1088/1757-899X/502/1/012121	journal	April 2019
Experimental Evidence of Intrinsic Current Generation by Turbulence in Stationary Tokamak Plasmas Li, Erzhong; Zou, X. L.; Xu, L. Q. Physical Review Letters, Vol. 128, Issue 8 https://doi.org/10.1103/PhysRevLett.128.085003	journal	February 2022
Regime of Improved Confinement and High Beta in Neutral-Beam-Heated Divertor Discharges of the ASDEX Tokamak Wagner, F.; Becker, G.; Behringer, K. Physical Review Letters, Vol. 49, Issue 19 https://doi.org/10.1103/PhysRevLett.49.1408	journal	November 1982
The Superconducting Magnets for EAST Tokamak Wei, J.; Chen, W. G.; Wu, W. Y. IEEE Transactions on Applied Superconductivity, Vol. 20, Issue 3 https://doi.org/10.1109/TASC.2010.2040030	journal	June 2010
A Continuous Data Acquisition System Based on CompactPCI for EAST Tokamak Wang, Feng; Li, Guiming; Li, Shi IEEE Transactions on Nuclear Science, Vol. 57, Issue 2 https://doi.org/10.1109/TNS.2009.2037499	journal	April 2010
The Accomplishments and Next-Step Plan of EAST in Support of Fusion Song, Yun Tao; Li, Jian Gang; Wan, Yuan Xi IEEE Transactions on Plasma Science, Vol. 42, Issue 3 https://doi.org/10.1109/TPS.2014.2301159	journal	March 2014

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