Home > Publications database > Influence of the X-point location on edge plasma transport in the J-TEXT tokamak with a high-field-side single-null divertor > print

001     904082
005     20240711113823.0
024 7 _ |a 10.1088/2058-6272/ac224a
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024 7 _ |a 2058-6272
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024 7 _ |a 2128/30173
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037 _ _ |a FZJ-2021-05652
082 _ _ |a 530
100 1 _ |a WANG, Hao
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245 _ _ |a Influence of the X-point location on edge plasma transport in the J-TEXT tokamak with a high-field-side single-null divertor
260 _ _ |a Bristol
|c 2021
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520 _ _ |a High-density experiments in the high-field-side mid-plane single-null divertor configuration have been performed for the first time on J-TEXT. The experiments show an increase in the highest central channel line-averaged density from $2.73\,\times \,{10}^{19}\,{{\rm{m}}}^{-3}$ to $6.49\,\times \,{10}^{19}\,{{\rm{m}}}^{-3}$, while the X-point moves away from the target by increasing the divertor coil current. The corresponding Greenwald fraction rises from 0.50 to 0.79. For the impurity transport, the density normalized radiation intensity (absolute extreme ultraviolet and soft x-ray) of the central channel density decreased significantly (>50%) with an increase in the plasma density. To better understand the underlying physics mechanisms, the 3D edge Monte Carlo code coupled with EIRENE (EMC3- EIRENE) has been implemented for the first time on J-TEXT. The simulation results show good agreement with the experimental findings. As the X-point moves away from the target, the divertor power decay length drops and the scrape-off layer impurity screening effect is enhanced.
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700 1 _ |a LIANG, Yunfeng
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700 1 _ |a Xu, Shuai
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700 1 _ |a JIANG, Zhonghe
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700 1 _ |a FENG, Yuhe
|0 P:(DE-Juel1)6982
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700 1 _ |a KNIEPS, A.
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700 1 _ |a DREWS, P.
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700 1 _ |a YANG, Jie
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700 1 _ |a XU, Xin
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700 1 _ |a LONG, Ting
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700 1 _ |a JIAO, Shaodong
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700 1 _ |a ZHANG, Xiaolong
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700 1 _ |a HAO, Zhigang
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700 1 _ |a YANG, Qinglong
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700 1 _ |a CHEN, Zhipeng
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700 1 _ |a CHEN, Zhongyong
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700 1 _ |a WANG, Nengchao
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700 1 _ |a YANG, Zhoujun
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700 1 _ |a ZHANG, Xiaoqing
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700 1 _ |a DING, Yonghua
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700 1 _ |a PAN, Yuan
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773 _ _ |a 10.1088/2058-6272/ac224a
|g Vol. 23, no. 12, p. 125103 -
|0 PERI:(DE-600)2240796-0
|n 12
|p 125103 -
|t Plasma science & technology
|v 23
|y 2021
|x 1009-0630
856 4 _ |u https://juser.fz-juelich.de/record/904082/files/Postprint_Influence%20of%20the%20X-point%20location%20on%20edge%20plasma%20transport%20in%20the%20J-TEXT.pdf
|y Published on 2021-11-11. Available in OpenAccess from 2022-11-11.
856 4 _ |u https://juser.fz-juelich.de/record/904082/files/WANG_2021_Plasma_Sci._Technol._23_125103.pdf
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