| 射频超导腔加速性能的改进 |
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| 引用本文： | 李欣, 陈强, 辛天牧, 等. 射频超导腔加速性能的改进[J]. 强激光与粒子束, 2006, 18(09). |
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| 作者姓名： | 李欣 陈强 辛天牧 郝建奎 |
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| 作者单位： | 1.北京航空航天大学 理学院 物理系,北京 1 00083;;;2.北京大学 重离子物理教育部重点实验室, 重离子物理研究所,北京 1 00871 |
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| 摘 要： | 为提高超导加速腔的加速梯度和Q值，改进了薄膜型超导腔的加速性能。研究证明，对于铜铌溅射腔，在无氧铜衬底和铌膜之间加入NbN 层可以提高铌膜的超导转变温度，改善晶格结构；对纯铌超导腔提出了改进方法，在传统的纯铌超导腔表面制备多层的超导-绝缘-超导复合膜可以屏蔽Nb腔表面的界面场，提高超导腔的临界磁场，从而提高了铌腔的加速梯度。
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| 关 键 词： | 溅射 超导腔 氮化铌 超导转变温度 超导-绝缘-超导 |
Performance improvment of RF superconducting cavity |
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| li xin, chen qiang, xin tian-mu, et al. Performance improvment of RF superconducting cavity[J]. High Power Laser and Particle Beams, 2006, 18. |
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| Authors: | li xin chen qiang xin tian-mu hao jian-kui |
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| Affiliation: | 1. Department of Physics,School of Science,Beijing University of Aronautics and Astronautics,Beijing 100083,China;;;2. MOE Key Laboratory of Heavy Ion Physics,Institute of Heavy Ion Physics,Peking University,Beijing 100871,China |
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| Abstract: | To improve the acceleration properties of the niobium cavities and niobium-sputtered copper cavities, studies are carried out. For niobium-sputtered copper cavities, by adding a layer of NbN between the copper and niobium, the transition temperature of the superconducting film can be increased so that the superconducting properties can be improved. Analysis shows that the accelerating gradient can be improved by preparing SIS multilayers on the surface of the superconducting cavities. |
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| Keywords: | sputtering superconducting cavity nbn superconducting transition temperature superconducting insulation superconducting(sis) |
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