The effect of heat load on divertor target by pumping in HL-2A Tokamak

Zhe WANG; Qianhong HUANG; Qingyi TAN; Haoran YE; Chengzhi CAO

doi:10.11889/j.0253-3219.2022.hjs.45.100603

Journals >NUCLEAR TECHNIQUES >Volume 45 >Issue 10 >Page 100603 > Article

NUCLEAR TECHNIQUES
Vol. 45, Issue 10, 100603 (2022)

The effect of heat load on divertor target by pumping in HL-2A Tokamak

Zhe WANG¹, Qianhong HUANG^1、*, Qingyi TAN¹, Haoran YE¹, and Chengzhi CAO²

Author Affiliations

¹University of South China, Hengyang 421001, China

²Southwestern Institute of Physics, Chengdu 610041, China

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DOI: 10.11889/j.0253-3219.2022.hjs.45.100603 Cite this Article

Zhe WANG, Qianhong HUANG, Qingyi TAN, Haoran YE, Chengzhi CAO. The effect of heat load on divertor target by pumping in HL-2A Tokamak[J]. NUCLEAR TECHNIQUES, 2022, 45(10): 100603 Copy Citation Text

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Fig. 1. The SOLPS computational mesh of HL-2A

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Variation of plasma parameters of divertor target with and without pumping(a) Electron temperature of the outer target, (b) Heat load of outer target, (c) Particle flux of outer target, (d) Electron temperature of the inner target, (e) Heat load of inner target, (f) Particle flux of inner target

Fig. 2. Variation of plasma parameters of divertor target with and without pumping(a) Electron temperature of the outer target, (b) Heat load of outer target, (c) Particle flux of outer target, (d) Electron temperature of the inner target, (e) Heat load of inner target, (f) Particle flux of inner target

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Fig. 3. Variation of radiation power of divertor outer target (a) and inner target (b) with different pumping rates

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Fig. 4. Changes of plasma parameters of divertor target at different upstream electron density(a) The electron density of outer target of divertor, (b) The electron temperature of outer target of divertor, (c) The ion density of outer target of divertor, (d) The electron density of inner target of divertor, (e) The electron temperature of inner target of divertor, (f) The ion density of inner target of divertor

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Fig. 5. Variation of neutral particle parameters of divertor target before and after detachment at different upstream electron density(a) The deuterium atomic density of outer target of divertor, (b) The deuterium molecular density of outer target of divertor, (c) The deuterium atomic temperature of outer target of divertor, (d) The deuterium molecular temperature of outer target of divertor, (e) The neutral pressure of outer target of divertor, (f) The deuterium atomic density of inner target of divertor, (g) The deuterium molecular density of inner target of divertor, (h) The deuterium atomic temperature of inner target of divertor, (i) The deuterium molecular temperature of inner target of divertor, (j) The neutral pressure of inner target of divertor

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Fig. 6. Distribution of the deuterium atomic density of divertor area(a) n_e,sep=0.19×10¹⁹m^-3without pumping, (b) n_e,sep=0.6×10¹⁹m^-3 without pumping, (c) n_e,sep=0.9×10¹⁹m^-3 without pumping, (d) n_e,sep=0.19×10¹⁹m^-3 with pumping, (e) n_e,sep=0.6×10¹⁹m^-3 with pumping, (f) n_e,sep=0.9×10¹⁹m^-3 with pumping

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Fig. 7. Distribution of the deuterium molecular density of divertor area(a) n_e,sep=0.19×10¹⁹m^-3without pumping, (b) n_e,sep=0.6×10¹⁹m^-3 without pumping, (c) n_e,sep=0.9×10¹⁹m^-3 without pumping, (d) n_e,sep=0.19×10¹⁹m^-3 with pumping, (e) n_e,sep=0.6×10¹⁹m^-3 with pumping, (f) n_e,sep=0.9×10¹⁹m^-3 with pumping

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Fig. 8. Distribution of the neutral pressure of divertor area(a) n_e,sep=0.19×10¹⁹m^-3without pumping, (b) n_e,sep=0.6×10¹⁹m^-3 without pumping, (c) n_e,sep=0.9×10¹⁹m^-3 without pumping, (d) n_e,sep=0.19×10¹⁹m^-3 with pumping, (e) n_e,sep=0.6×10¹⁹m^-3 with pumping, (f) n_e,sep=0.9×10¹⁹m^-3 with pumping

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序号 Index	反应式Reaction	反应类型 Reaction type
1	$D + e \to D^{+} + 2 e$	电离Ionization
2	$D_{2} + e \to D_{2}^{+} + 2 e$	电离Ionization
3	$D_{2} + e \to D + D + e$	解离Dissociation
4	$D_{2} + e \to D^{+} + D + 2 e$	电离Ionization
5	$D_{2}^{+} + e \to D + e + D^{+}$	解离Dissociation
6	$D_{2}^{+} + e \to D^{+} + D^{+} + 2 e$	电离Ionization
7	$D_{2}^{+} + e \to D + D$	再复合Recombination
8	$D^{+} + e \to D$	再复合Recombination
9	$D^{+} + D \to D + D^{+}$	电荷交换Charge exchange
10	$D^{+} + D_{2} \to D + D_{2}^{+}$	电荷交换Charge exchange
11	$D^{+} + D \to D^{+} + D$	弹性碰撞Elastic collision
12	$D^{+} + D_{2} \to D^{+} + D_{2}$	弹性碰撞Elastic collision

Table 1. Deuterium neutral reactions included in EIRENE

Zhe WANG, Qianhong HUANG, Qingyi TAN, Haoran YE, Chengzhi CAO. The effect of heat load on divertor target by pumping in HL-2A Tokamak[J]. NUCLEAR TECHNIQUES, 2022, 45(10): 100603

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