用于暗物质轴子搜索的高磁场中双轴织构YBa $_{2}$ Cu PDMATHAAB O $_{7-x}$微波腔的第一个原型
First prototype of a biaxially textured YBa$_{2}$Cu$_{3}$O$_{7-x}$ microwave cavity in a high magnetic field for dark matter axion search
摘要：
在强磁场存在下的高品质因数微波谐振器可能具有广泛的应用，例如轴子暗物质搜索，其中两个方面必须共存以增强实验灵敏度。本文介绍了一种在腔体内壁上覆盖$_{2}$ O $_{7-x}$超导带材的双织构腔体。使用一个12边多边形腔，我们获得了显著改善的品质因数的TM $_{010}$模式在6.9 GHz，4 K相对于铜腔，并观察到没有相当大的退化，在磁场的存在下，高达8 T。这相当于超导射频技术在轴子和其他需要在强磁场中实现低损耗的研究领域的首次实际应用演示。我们强调了成功演示的重要性，并讨论了进一步的改进。
英文摘要：
A high-quality factor microwave resonator in the presence of a strong magnetic field could have a wide range of applications, such as axion dark matter searches where the two aspects must coexist to enhance the experimental sensitivity. We introduce a polygon-shaped cavity design with bi-axially textured YBa$_{2}$Cu$_{3}$O$_{7-x}$ superconducting tapes covering the entire inner wall. Using a 12-sided polygon cavity, we obtain substantially improved quality factors of the TM$_{010}$ mode at 6.9 GHz at 4 K with respect to a copper cavity and observe no considerable degradation in the presence of magnetic fields up to 8 T. This corresponds to the first demonstration of practical applications of superconducting radio frequency technology for axion and other research areas requiring low loss in a strong magnetic field. We address the importance of the successful demonstration and discuss further improvements.
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