The Tungsten Guard Limiter of 4.6 GHz Lower Hybrid Current Drive Under EAST Operations
文献类型：期刊论文
| 作者 | Liu, Changle2 ; Zhang, Liangliang1; Cao, Lei1; Li, Lei1; Liu, Liang1; Wang, Mao1; Yao, Damao1
|
| 刊名 | IEEE TRANSACTIONS ON PLASMA SCIENCE
 |
| 出版日期 | 2022-04-01 |
| 卷号 | 50 |
| ISSN号 | 0093-3813 |
| 关键词 | Experimental Advanced Superconducting Tokamak (EAST) hot spots lower hybrid current drive (LHCD) tungsten guard limiter (GL) |
| DOI | 10.1109/TPS.2022.3157303 |
| 通讯作者 | Yao, Damao(yaodm@ipp.ac.cn) |
| 英文摘要 | The 4.6 GHz lower hybrid current drive (LHCD) waveguide is a dominative auxiliary heating and current drive facility in Experimental Advanced Superconducting Tokamak (EAST), but a large number of hot spots were observed on the previous guard limiter (GL) of graphite monoblocks plated with SiC during 2016-2017 campaigns, which limited to the plasma density, the superconductor currents, and the heating power of LHCD in EAST operations and also led to the plasma disruptions due to the carbon impurity. Therefore, we developed a tungsten GL for 4.6 GHz LHCD facility employed in the operations. The thermal transfer issues are resolved with a numerical simulation method. The fluid circuit is designed symmetrically considering the interchangeability. The joint water box is schemed based on the physical requirements with explosive welding technology. The new GL experienced the plasma discharges in the LHCD operations under the conditions of I-p similar to 400-600 kA, n(e) similar to 2-4 x 10(19) m(-3), and I-t similar to -10 000/-11 000 A in the plasma discharges. The maximum operated power of LHCD reached 3.7 MW and a short pulse discharge lasted 20 s at operated power of 2.9 MW. In consequence, the plasmas discharges were controlled well without any disruptions due to the hot spot reasons and ended smoothly. It indicates that the hot spots of LHCD GL ever considered as an inevitable event in the LHCD operations could be reduced to minimum via the new engineering design. |
| WOS关键词 | ION-CYCLOTRON ; ANTENNAS ; DIVERTOR ; PLASMA |
| 资助项目 | Research Plan on Experimental Advanced Superconducting Tokamak (EAST) In-Vessel Maintenance[O75ETYM301] ; Science Foundation within the Institute of Plasma Physics, Chinese Academy of Sciences[Y45ETY2302] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| WOS记录号 | WOS:000777132100001 |
| 资助机构 | Research Plan on Experimental Advanced Superconducting Tokamak (EAST) In-Vessel Maintenance ; Science Foundation within the Institute of Plasma Physics, Chinese Academy of Sciences |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/128653]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Yao, Damao |
| 作者单位 | 1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.West Anhui Univ, Fac Mech & Automot Engn, Luan 237012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Changle,Zhang, Liangliang,Cao, Lei,et al. The Tungsten Guard Limiter of 4.6 GHz Lower Hybrid Current Drive Under EAST Operations[J]. IEEE TRANSACTIONS ON PLASMA SCIENCE,2022,50. |
| APA | Liu, Changle.,Zhang, Liangliang.,Cao, Lei.,Li, Lei.,Liu, Liang.,...&Yao, Damao.(2022).The Tungsten Guard Limiter of 4.6 GHz Lower Hybrid Current Drive Under EAST Operations.IEEE TRANSACTIONS ON PLASMA SCIENCE,50. |
| MLA | Liu, Changle,et al."The Tungsten Guard Limiter of 4.6 GHz Lower Hybrid Current Drive Under EAST Operations".IEEE TRANSACTIONS ON PLASMA SCIENCE 50(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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