Detection and suppression of the trapped-electrons-transportation-type flashover in a linear accelerator
文献类型：期刊论文
| 作者 | Liu,Xinmeng4; He,Yuan3 ; Li,Yongming2; Guo,Hao3; Ren,Chengyan1; Gao,Zheng3; Jiang,Tiancai3; Xue,Zongheng3
|
| 刊名 | Physica Scripta
 |
| 出版日期 | 2021-07-02 |
| 卷号 | 96期号:10页码:7 |
| ISSN号 | 0031-8949 |
| 关键词 | trapped electrons transportation flashovers superconducting accelerator field emission |
| DOI | 10.1088/1402-4896/ac0c91 |
| 通讯作者 | He,Yuan() |
| 英文摘要 | Abstract The polarization energy relaxation around trapped electrons type of flashover happened in the Superconducting Demo Linac of the China Initiative Accelerator Driven Subcritical System project, which greatly limited the acceleration capability of the accelerator. This problem seriously affects the stability of accelerator operation and becoming the most urgent issue to be solved. From the reticulated and radial traces through the inner and outer conductors on the electrical aging windows of the RF couplers, the surface discharge or flashover was inferred from the pick-up couplers. The simulation of field-emission electron trajectory in the superconducting cavity and the online monitoring of the flashover signal showed that the discharge occurred by the bombardment and accumulation of field-emission electrons from the cavity. Therefore, the antenna of the pick-up coupler was redesigned and applied to the Linac. The new design removed the abnormal signal caused by discharges during more than one year operation of the cavity, thereby improving the acceleration capability and stability performance of the accelerator. |
| WOS关键词 | INSULATORS ; EMISSION ; VACUUM |
| 资助项目 | National Science Fund for Distinguished Young Scholars[11525523] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | IOP Publishing |
| WOS记录号 | IOP:0031-8949-96-10-AC0C91 |
| 资助机构 | National Science Fund for Distinguished Young Scholars |
| 源URL | [http://119.78.100.186/handle/113462/136976]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | He,Yuan |
| 作者单位 | 1.Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China 2.GLVAC Industrial Technology Research Institute of High Power Devices, Kunshan 215333, People’s Republic of China 3.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China 4.School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Liu,Xinmeng,He,Yuan,Li,Yongming,et al. Detection and suppression of the trapped-electrons-transportation-type flashover in a linear accelerator[J]. Physica Scripta,2021,96(10):7. |
| APA | Liu,Xinmeng.,He,Yuan.,Li,Yongming.,Guo,Hao.,Ren,Chengyan.,...&Xue,Zongheng.(2021).Detection and suppression of the trapped-electrons-transportation-type flashover in a linear accelerator.Physica Scripta,96(10),7. |
| MLA | Liu,Xinmeng,et al."Detection and suppression of the trapped-electrons-transportation-type flashover in a linear accelerator".Physica Scripta 96.10(2021):7. |
入库方式： OAI收割
来源：近代物理研究所
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