| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Super-X Divertor Simulation for HCSB-DEMO Conception Design |
| ZHENG Guo-Yao, PAN Yu-Dong, FENG Kai-Ming, HE Hong-Da, CUI Xue-Wu |
Southwestern Institute of Physics (SWIP), P. O. Box 432, Chengdu 610041
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| Cite this article: |
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ZHENG Guo-Yao, PAN Yu-Dong, FENG Kai-Ming et al 2013 Chin. Phys. Lett. 30 015201 |
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Abstract HCSB-DEMO concept design is carried out at SWIP. In order to handle power from a core plasma region, a super-X divertor is preliminarily designed and investigated for HCSB-DEMO. It increases the target surface area by expanding the magnetic flux surface with another X-point generated near the targets and increases the parallel connection length by moving the outer divertor target to larger R and Z. The heat load at the targets is investigated by B2.5-Eirene. With heating power flowing into SOL/divertor regions being P=600 MW, when the density at the separatrix is ne=3.5×1019 m?3, the peak heat load at the inner and outer divertor is 9.2 MW/m2 and 3.7 MW/m2, respectively, which is much less than those of the standard divertor without impurity seeding, and also below the design targets (10 MW/m2). Thus the super-X divertor may work well for HCSB-DEMO to solve the high heat load problem at the divertor target without impurity seeding from this preliminary concept design and simulation.
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Received: 04 September 2012
Published: 04 March 2013
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| PACS: |
52.55.-s
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(Magnetic confinement and equilibrium)
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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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