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000904082 1001_ $$0P:(DE-HGF)0$$aWANG, Hao$$b0
000904082 245__ $$aInfluence of the X-point location on edge plasma transport in the J-TEXT tokamak with a high-field-side single-null divertor
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000904082 520__ $$aHigh-density experiments in the high-field-side mid-plane single-null divertor configuration have been performed for the first time on J-TEXT. The experiments show an increase in the highest central channel line-averaged density from $2.73\,\times \,{10}^{19}\,{{\rm{m}}}^{-3}$ to $6.49\,\times \,{10}^{19}\,{{\rm{m}}}^{-3}$, while the X-point moves away from the target by increasing the divertor coil current. The corresponding Greenwald fraction rises from 0.50 to 0.79. For the impurity transport, the density normalized radiation intensity (absolute extreme ultraviolet and soft x-ray) of the central channel density decreased significantly (>50%) with an increase in the plasma density. To better understand the underlying physics mechanisms, the 3D edge Monte Carlo code coupled with EIRENE (EMC3- EIRENE) has been implemented for the first time on J-TEXT. The simulation results show good agreement with the experimental findings. As the X-point moves away from the target, the divertor power decay length drops and the scrape-off layer impurity screening effect is enhanced.
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000904082 7001_ $$0P:(DE-Juel1)130088$$aLIANG, Yunfeng$$b1$$eCorresponding author
000904082 7001_ $$0P:(DE-Juel1)171372$$aXu, Shuai$$b2
000904082 7001_ $$0P:(DE-HGF)0$$aJIANG, Zhonghe$$b3
000904082 7001_ $$0P:(DE-Juel1)6982$$aFENG, Yuhe$$b4
000904082 7001_ $$0P:(DE-Juel1)173792$$aKNIEPS, A.$$b5
000904082 7001_ $$0P:(DE-Juel1)162257$$aDREWS, P.$$b6
000904082 7001_ $$0P:(DE-Juel1)188909$$aYANG, Jie$$b7
000904082 7001_ $$0P:(DE-HGF)0$$aXU, Xin$$b8
000904082 7001_ $$0P:(DE-HGF)0$$aLONG, Ting$$b9
000904082 7001_ $$0P:(DE-HGF)0$$aJIAO, Shaodong$$b10
000904082 7001_ $$0P:(DE-HGF)0$$aZHANG, Xiaolong$$b11
000904082 7001_ $$0P:(DE-HGF)0$$aHAO, Zhigang$$b12
000904082 7001_ $$0P:(DE-HGF)0$$aYANG, Qinglong$$b13
000904082 7001_ $$0P:(DE-HGF)0$$aCHEN, Zhipeng$$b14
000904082 7001_ $$0P:(DE-HGF)0$$aCHEN, Zhongyong$$b15
000904082 7001_ $$0P:(DE-Juel1)165601$$aWANG, Nengchao$$b16
000904082 7001_ $$0P:(DE-HGF)0$$aYANG, Zhoujun$$b17
000904082 7001_ $$0P:(DE-HGF)0$$aZHANG, Xiaoqing$$b18
000904082 7001_ $$0P:(DE-HGF)0$$aDING, Yonghua$$b19
000904082 7001_ $$0P:(DE-HGF)0$$aPAN, Yuan$$b20
000904082 773__ $$0PERI:(DE-600)2240796-0$$a10.1088/2058-6272/ac224a$$gVol. 23, no. 12, p. 125103 -$$n12$$p125103 -$$tPlasma science & technology$$v23$$x1009-0630$$y2021
000904082 8564_ $$uhttps://juser.fz-juelich.de/record/904082/files/Postprint_Influence%20of%20the%20X-point%20location%20on%20edge%20plasma%20transport%20in%20the%20J-TEXT.pdf$$yPublished on 2021-11-11. Available in OpenAccess from 2022-11-11.
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