تقرير
Measurement of high quality factor superconducting cavities in tesla-scale magnetic fields for dark matter searches
| العنوان: | Measurement of high quality factor superconducting cavities in tesla-scale magnetic fields for dark matter searches |
|---|---|
| المؤلفون: | Posen, S., Checchin, M., Melnychuk, O. S., Ring, T., Gonin, I., Khabiboulline, T. |
| سنة النشر: | 2022 |
| المجموعة: | Physics (Other) Quantum Physics |
| مصطلحات موضوعية: | Physics - Accelerator Physics, Quantum Physics |
| الوصف: | 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 $\mu$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. |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2201.10733 |
| رقم الأكسشن: | edsarx.2201.10733 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |