| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Scaling Laws of Heat Flux Width in the HL-2A Closed Divertor Tokamak |
| Longwen Yan*, Jinming Gao, Xianggan Miao, Zhihui Huang, Na Wu, Wenjin Chen, Ting Wu, Weice Wang, Liang Liu, Xiaoxue He, Kaiyang Yi, Yu He, Lin Nie, Zhongbing Shi, and Wulv Zhong |
| Southwestern Institute of Physics, Chengdu 610225, China |
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| Cite this article: |
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Longwen Yan, Jinming Gao, Xianggan Miao et al 2022 Chin. Phys. Lett. 39 115202 |
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Abstract The scaling law of divertor heat flux width is one of the key topics of magnetic confinement fusion, which is almost inversely proportional to the poloidal magnetic field on some opened divertor tokamaks. This work focuses on the scaling laws of the closed divertor heat flux width in the HL-2A tokamak under different discharge conditions, such as the Ohmic, L- and H-modes. The results indicate that there are basic similarities of the scaling laws of the heat flux width between the opened and closed divertors. However, a larger spreading width in the private flux region is found, which is relevant to a small expansion factor of the magnetic flux in the closed divertor.
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Received: 31 August 2022
Published: 26 October 2022
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| PACS: |
52.55.Fa
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(Tokamaks, spherical tokamaks)
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52.55.Rk
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(Power exhaust; divertors)
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