Searches for dark matter axions involve the use of microwave resonant cavities operating in a strong magnetic field. Detector sensitivity is directly related to the cavity quality factor, which is limited, until recently, to the use of non-superconducting metals by the presence of the external magnetic field. In this paper, we present a cavity of novel design whose quality factor is not affected by a magnetic field. It is based on a photonic structure by the use of sapphire rods. The quality factor at cryogenic temperature is in excess of 5 × 105 for a selected mode.

中文翻译：

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用于暗物质轴子搜索的高质量因子光子腔

暗物质轴子的搜索涉及使用在强磁场中运行的微波谐振腔。探测器灵敏度与腔品质因数直接相关，直到最近，由于外部磁场的存在，腔品质因数仅限于使用非超导金属。在本文中，我们提出了一种新颖设计的腔体，其品质因数不受磁场的影响。它基于使用蓝宝石棒的光子结构。对于选定的模式，低温下的品质因数超过 5 × 105。