Ultrahigh accelerating gradient and quality factor of CEPC 650 MHz superconducting radio-frequency cavity
文献类型：期刊论文
| 作者 | Sha, Peng ; Pan, Wei-Min; Jin, Song; Zhai, Ji-Yuan; Mi, Zheng-Hui; Liu, Bai-Qi; Dong, Chao; He, Fei-Si; Ge, Rui; Sun, Liang-Rui
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| 刊名 | NUCLEAR SCIENCE AND TECHNIQUES
 |
| 出版日期 | 2022 |
| 卷号 | 33期号:10页码:125 |
| ISSN号 | 1001-8042 |
| 关键词 | SRF cavity Accelerating gradient Quality factor Electropolishing Vertical test cavity CEPC quality superconductivity temperature surface |
| DOI | 10.1007/s41365-022-01109-8 |
| 文献子类 | Article |
| 英文摘要 | Two 650 MHz single-cell superconducting radio-frequency (SRF) cavities used for the Circular Electron Positron Collider (CEPC) were studied to achieve a high accelerating gradient (E$_{acc}$) and high intrinsic quality factor (Q$_{0}$). The 650 MHz single-cell cavities were subjected to a combination of buffered chemical polishing (BCP) and electropolishing (EP), and their E$_{acc}$ exceeded 40 MV/m. Such a high E$_{acc}$ may result from the cold EP with more uniform removal. BCP is easy, cheap, and rough, whereas EP is complicated, expensive, and precise. Therefore, the combination of BCP and EP investigated in this study is suitable for surface treatments of mass SRF cavities. Medium temperature (mid-T) furnace baking was also conducted, which demonstrated an ultrahigh Q$_{0}$ of 8 × 10$^{10}$ at 22 MV/m for both cavities, and an extremely low BCS resistance (R$_{BCS}$) of ~ 1.0 nΩ was achieved at 2.0 K. |
| 电子版国际标准刊号 | 2210-3147 |
| 语种 | 英语 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/300055]  |
| 专题 | 高能物理研究所_加速器中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Sha, Peng,Pan, Wei-Min,Jin, Song,et al. Ultrahigh accelerating gradient and quality factor of CEPC 650 MHz superconducting radio-frequency cavity[J]. NUCLEAR SCIENCE AND TECHNIQUES,2022,33(10):125. |
| APA | Sha, Peng.,Pan, Wei-Min.,Jin, Song.,Zhai, Ji-Yuan.,Mi, Zheng-Hui.,...&Ye, Ling-Xi.(2022).Ultrahigh accelerating gradient and quality factor of CEPC 650 MHz superconducting radio-frequency cavity.NUCLEAR SCIENCE AND TECHNIQUES,33(10),125. |
| MLA | Sha, Peng,et al."Ultrahigh accelerating gradient and quality factor of CEPC 650 MHz superconducting radio-frequency cavity".NUCLEAR SCIENCE AND TECHNIQUES 33.10(2022):125. |
入库方式： OAI收割
来源：高能物理研究所
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