Thermal analysis of EAST neutral beam injectors for long-pulse beam operation | |
Hu, Chundong; Xu, Yongjian; Xie, Yuanlai; Xie, Yahong; Liang, Lizhen; Jiang, Caichao; Liu, Sheng; Wei, Jianglong; Sheng, Peng; Liu, Zhimin | |
刊名 | PLASMA SCIENCE & TECHNOLOGY |
2018-04-01 | |
卷号 | 20期号:4页码:5 |
关键词 | thermal analysis neutral beam injector beam extraction beam divergence ion source |
ISSN号 | 1009-0630 |
DOI | 10.1088/2058-6272/aaa4f0 |
英文摘要 | Two sets of neutral beam injectors (NBI-1 and NBI-2) have been mounted on the EAST tokamak since 2014. NBI-1 and NBI-2 are co-direction and counter-direction, respectively. As with indepth physics and engineering study of EAST, the ability of long pulse beam injection should be required in the NBI system. For NBIs, the most important and difficult thing that should be overcome is heat removal capacity of heat loaded components for long-pulse beam extraction. In this article, the thermal state of the components of EAST NBI is investigated using water flow calorimetry and thermocouple temperatures. Results show that (1) operation parameters have an obvious influence on the heat deposited on the inner components of the beamline, (2) a suitable operation parameter can decrease the heat loading effectively and obtain longer beam pulse length, and (3) under the cooling water pressure of 0.25 MPa, the predicted maximum beam pulse length will be up to 260 s with 50 keV beam energy by a duty factor of 0.5. The results present that, in this regard, the EAST NBI-1 system has the ability of long-pulse beam injection. |
WOS关键词 | EXTRACTION |
WOS研究方向 | Physics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000431031600026 |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/36267] |
专题 | 合肥物质科学研究院_中科院等离子体物理研究所 |
通讯作者 | Xu, Yongjian |
作者单位 | Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China |
推荐引用方式 GB/T 7714 | Hu, Chundong,Xu, Yongjian,Xie, Yuanlai,et al. Thermal analysis of EAST neutral beam injectors for long-pulse beam operation[J]. PLASMA SCIENCE & TECHNOLOGY,2018,20(4):5. |
APA | Hu, Chundong.,Xu, Yongjian.,Xie, Yuanlai.,Xie, Yahong.,Liang, Lizhen.,...&Tao, Ling.(2018).Thermal analysis of EAST neutral beam injectors for long-pulse beam operation.PLASMA SCIENCE & TECHNOLOGY,20(4),5. |
MLA | Hu, Chundong,et al."Thermal analysis of EAST neutral beam injectors for long-pulse beam operation".PLASMA SCIENCE & TECHNOLOGY 20.4(2018):5. |
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