Cold RF test and associated mechanical features correlation of a TESLA-style 9-cell superconducting niobium cavity built in China |
| |
Authors: | DAI Jing LU Xiang-Yang QUAN Sheng-Wen ZHANG Bao-Cheng LIN Lin HAO Jian-Kui ZHU Feng XU Wen-Can HE Fei-Si JIN Song WANG Fang LIU Ke-Xin R. L. Geng ZHAO Kui |
| |
Affiliation: | 1;1) 1 Institute of Heavy Ion Physics, Peking University, Beijing 100871, China 2 Thomas Jefferson National Accelerator Facility, Newport News, VA 2606, USA |
| |
Abstract: | The RF performance of a 1.3 GHz 9-cell superconducting niobium cavity was evaluated at cryogenic temperatures following surface processing by using the standard ILC-style recipe. The cavity is a TESLA-style 9-cell superconducting niobium cavity, with complete end group components including a higher order mode coupler, built in China for practical applications. An accelerating gradient of 28.6 MV/m was achieved at an unloaded quality factor of 4 × 109. The morphological property of mechanical features on the RF surface of this cavity was characterized through optical inspection. Correlation between the observed mechanical features and the RF performance of the cavity is attempted. |
| |
Keywords: | superconducting cavity unloaded quality factor field emission |
本文献已被 CNKI 等数据库收录! |
| 点击此处可从《中国物理 C》浏览原始摘要信息 |
|
点击此处可从《中国物理 C》下载全文 |
|