Integrated Operating Scenario to Achieve 100-Second, High Electron Temperature Discharge on EAST

QIAN Jinping (钱金平); GONG Xianzu (龚先祖); WAN Baonian (万宝年); LIU Fukun (刘甫坤); WANG Mao (王茂); XU Handong (徐旵东); HU Chundong (胡纯栋); WANG Liang (王亮); LI Erzhong (李二众); ZENG Long (曾龙); TI Ang (提昂); SHEN Biao (沈飚); LIN Shiyao (林士耀); SHAO Linming (邵林明); ZANG Qing (臧庆); LIU Haiqing (刘海庆); ZHANG Bin (张斌); SUN Youwen (孙有文); XU Guosheng (徐国盛); LIANG Yunfeng (梁云峰); XIAO Bingjia (肖炳甲); HU Liqun (胡立群); LI Jiangang (李建刚); the EAST Team

doi:10.1088/1009-0630/18/5/01

Plasma Science and Technology > 2016 > 18(5): 457-459. > DOI: 10.1088/1009-0630/18/5/01

QIAN Jinping (钱金平), GONG Xianzu (龚先祖), WAN Baonian (万宝年), LIU Fukun (刘甫坤), WANG Mao (王茂), XU Handong (徐旵东), HU Chundong (胡纯栋), WANG Liang (王亮), LI Erzhong (李二众), ZENG Long (曾龙), TI Ang (提昂), SHEN Biao (沈飚), LIN Shiyao (林士耀), SHAO Linming (邵林明), ZANG Qing (臧庆), LIU Haiqing (刘海庆), ZHANG Bin (张斌), SUN Youwen (孙有文), XU Guosheng (徐国盛), LIANG Yunfeng (梁云峰), XIAO Bingjia (肖炳甲), HU Liqun (胡立群), LI Jiangang (李建刚), the EAST Team. Integrated Operating Scenario to Achieve 100-Second, High Electron Temperature Discharge on EAST[J]. Plasma Science and Technology, 2016, 18(5): 457-459. DOI: 10.1088/1009-0630/18/5/01

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Integrated Operating Scenario to Achieve 100-Second, High Electron Temperature Discharge on EAST

Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

Funds: supported by the National Magnetic Confinement Fusion Science Foundation of China (Nos. 2015GB102000 and 2014GB103000)

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Received Date: April 04, 2016

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Abstract

Abstract

Stationary long pulse plasma of high electron temperature was produced on EAST for the first time through an integrated control of plasma shape, divertor heat flux, particle exhaust, wall conditioning, impurity management, and the coupling of multiple heating and current drive power. A discharge with a lower single null divertor conguration was maintained for 103 s at a plasma current of 0.4 MA, q95 ≈7.0, a peak electron temperature of >4.5 keV, and a central density n_e(0)~2.5×10¹⁹ m^-3. The plasma current was nearly non-inductive (V_loop <0.05 V, poloidal beta ∼0.9) driven by a combination of 0.6 MW lower hybrid wave at 2.45 GHz, 1.4 MW lower hybrid wave at 4.6 GHz, 0.5 MW electron cyclotron heating at 140 GHz, and 0.4 MW modulated neutral deuterium beam injected at 60 kV. This progress demonstrated strong synergy of electron cyclotron and lower hybrid electron heating, current drive, and energy confinement of stationary plasma on EAST. It further introduced an example of integrated “hybrid” operating scenario of interest to ITER and CFETR.
- superconducting tokamak,
- high electron temperature,
- long pulse

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References (1)

References

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