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Divertor Design and Physics Issues of Huge Power Handling for SlimCS Demo Reactor
| Content Provider | Semantic Scholar |
|---|---|
| Author | Asakura, Nobuyuki Shimizu, Katsuhiro Hoshino, Kazuo Tobita, Kenji Someya, Youji Utoh, Hiroyasu Nakamura, Makoto Takizuka, Tomonori |
| Copyright Year | 2012 |
| Abstract | Power exhaust scenario for a 3 GW class fusion reactor with the ITER-size plasma has been developed with enhancing the radiation loss from seeding impurity. Impurity transport and the plasma detachment were simulated self-consistently, for the first time, under the Demo divertor condition using an integrated divertor code SONIC. Power handling with different seeding impurities showed that the total heat loading, including the plasma transport (qt arget plasma ) and radiation (qt arget rad ), was reduced from 15 MW/m to ~10 MW/m for the higher Z (Kr) case, where both heat load components become comparable, which qt arget rad extended over the wide area accompanying with impurity recycling. Geometry effects of the long-leg divertor was examined. Full detachment was obtained, and peak qtarget was decreased to 12 MW/m, where neutral heat load became comparable to qt arget plasma and qt arget rad maybe due to small flux expansion. Finally, plasma transport significantly affected the performance of the plasma detachment. Peak qtarget was significantly reduced to 5 MW/m well below engineering design level, with uniformly increasing the diffusion coefficient by the factor of two. Effects of the divertor geometry were also investigated. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www-naweb.iaea.org/napc/physics/FEC/FEC2012/papers/162_FTPP732.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
