Particle and power deposition on divertor targets in EAST H-mode plasmas
文献类型：期刊论文
| 作者 | Guo, HY ; Chen, R; Zhang, L; Ming, TF; Xu, GS; Wang, L; Wan, BN; Wang, HQ; Wang, HQ; Yan, N
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| 刊名 | nuclear fusion
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| 出版日期 | 2012 |
| 中文摘要 | the effects of edge-localized modes (elms) on divertor particle and heat fluxes were investigated for the first time in the experimental advanced superconducting tokamak (east). the experiments were carried out with both double null and lower single null divertor configurations, and comparisons were made between the h-mode plasmas with lower hybrid current drive (lhcd) and those with combined ion cyclotron resonance heating (icrh). the particle and heat flux profiles between and during elms were obtained from langmuir triple-probe arrays embedded in the divertor target plates. and isolated elms were chosen for analysis in order to reduce the uncertainty resulting from the influence of fast electrons on langmuir triple-probe evaluation during elms. the power deposition obtained from langmuir triple probes was consistent with that from the divertor infra-red camera during an elm-free period. it was demonstrated that elm-induced radial transport predominantly originated from the low-field side region, in good agreement with the ballooning-like transport model and experimental results of other tokamaks. elms significantly enhanced the divertor particle and heat fluxes, without significantly broadening the sol width and plasma-wetted area on the divertor target in both lhcd and lhcd + icrh h-modes, thus posing a great challenge for the next-step high-power, long-pulse operation in east. increasing the divertor-wetted area was also observed to reduce the peak heat flux and particle recycling at the divertor target, hence facilitating long-pulse h-mode operation. the particle and heat flux profiles during elms appeared to exhibit multiple peak structures, and were analysed in terms of the behaviour of elm filaments and the flux tubes induced by modified magnetic topology during elms. |
| 学科主题 | 等离子体物理与核聚变研究 |
| 公开日期 | 2012-07-09 |
| 源URL | [http://ir.hfcas.ac.cn/handle/334002/5628]  |
| 专题 | 合肥物质科学研究院_中科院等离子体物理研究所 |
| 推荐引用方式 GB/T 7714 | Guo, HY,Chen, R,Zhang, L,et al. Particle and power deposition on divertor targets in EAST H-mode plasmas[J]. nuclear fusion,2012. |
| APA | Guo, HY.,Chen, R.,Zhang, L.,Ming, TF.,Xu, GS.,...&Gong, XZ.(2012).Particle and power deposition on divertor targets in EAST H-mode plasmas.nuclear fusion. |
| MLA | Guo, HY,et al."Particle and power deposition on divertor targets in EAST H-mode plasmas".nuclear fusion (2012). |
入库方式： OAI收割
来源：合肥物质科学研究院
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