论文标题
Haystac暗物质轴搜索的对称多杆可调微波腔
A Symmetric Multi-rod Tunable Microwave Cavity for the HAYSTAC Dark Matter Axion Search
论文作者
论文摘要
微波腔实验是在0.1-10 GHz范围内寻找轴的最敏感方法，对应于0.5-40 $ $ $ $ eV的质量。大于5 GHz的频率的特殊挑战是设计一个具有较大体积的空腔，其中包含具有高型的谐振模式，具有较高的外形，高质量的因子，广泛的动态范围，并且没有入侵者模式。对于Haystac，我们使用调谐机制设计并构建了优化的高频腔，该机制可保留高度的旋转对称性，这对于最大化其功绩数字至关重要。根据轴质量5.5-7.4 GHz的最新理论估计，该空腔覆盖了一个重要的频率范围，并且该设计似乎也可以扩展到较高的频率。本文将讨论腔体的关键设计和施工细节，介绍设计演变的摘要，并提醒从业者对未来工作的潜在无效途径。
The microwave cavity experiment is the most sensitive way of looking for axions in the 0.1-10 GHz range, corresponding to masses of 0.5 - 40 $μ$eV. The particular challenge for frequencies greater than 5 GHz is designing a cavity with a large volume that contains a resonant mode that has a high form factor, a high quality factor, a wide dynamic range, and is free from intruder modes. For HAYSTAC, we have designed and constructed an optimized high frequency cavity with a tuning mechanism that preserves a high degree of rotational symmetry, critical to maximizing its figure of merit. This cavity covers an important frequency range according to recent theoretical estimates for the axion mass, 5.5 - 7.4 GHz, and the design appears extendable to higher frequencies as well. This paper will discuss key design and construction details of the cavity, present a summary of the design evolution, and alert practitioners of potentially unfruitful avenues for future work.
