arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2201.10733physics.acc-phquant-ph
收藏

用于暗物质研究的特斯拉尺度磁场中高品质因数超导腔的测量

Measurement of high quality factor superconducting cavities in tesla-scale magnetic fields for dark matter searches

S. Posen, M. Checchin, O. S. Melnychuk, T. Ring, I. Gonin, T. Khabiboulline

摘要:

在暗物质搜索使用轴子haloscope,搜索灵敏度取决于质量因素($Q_0$)的射频腔沉浸在多特斯拉磁场。增加$Q_0$将增加通过感兴趣的参数空间的扫描速率。为粒子加速器开发超导射频腔的研究人员已经开发出在$μ$ T尺度磁场中获得极高$Q_0\sim10^{11}$的方法。在本文中,我们描述了努力开发高Q腔由Nb $_3$ Sn膜使用的技术开发的粒子加速器腔。几何优化,为这一应用进行了探讨,两个腔进行了测试:一个现有的粒子加速器式腔和几何开发和制造用于高领域。在3.9 GHz、6 T、4.2 K下测得了($5.3\pm0.3$)$\times 10^5$的品质因数.

英文摘要:

In dark matter searches using axion haloscopes, the search sensitivity depends on the quality factors ($Q_0$) of radiofrequency cavities immersed in multi-tesla magnetic fields. Increasing $Q_0$ would increase the scan rate through the parameter space of interest. Researchers developing superconducting radiofrequency cavities for particle accelerators have developed methods for obtaining extremely high $Q_0\sim10^{11}$ in $μ$T-scale magnetic fields. In this paper, we describe efforts to develop high Q cavities made from Nb$_3$Sn films using a technique developed for particle accelerator cavities. Geometry optimization for this application is explored, and two cavities are tested: an existing particle accelerator-style cavity and a geometry developed and fabricated for use in high fields. A quality factor of ($5.3\pm0.3$)$\times 10^5$ is obtained at 3.9~GHz and 6~T at 4.2~K.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑