论文标题
用空心的介电圆柱来实现高质量因子谐振器用于斧头搜索
Realization of a high quality factor resonator with hollow dielectric cylinders for axion searches
论文作者
论文摘要
高质量因子谐振器的实现和表征讨论了两个空心圆柱体，其伪tm $ _ {030} $模式以10.9 GHz频率共鸣。质量因子在300 k和4 K的温度下测量$ \ mbox {q} _ {300 \ mbox {k}} =（150,000 \ pm 2,000）$和$ \ mbox {q} _ {q} _ {4 \ mbox {k}} =（720,000 \ pm 10,000 $ a的订单传统的铜圆柱腔具有相应的TM $ _ {010} $模式以相同频率共鸣。讨论了与腔实验的暗轴搜索的含义，表明质量因子的增益不会因减少的几何耦合$ c_ {030} $而破坏轴向磁场。这种减少效应估计最多为20％。数值模拟表明，数百个MHz的频率调整是可行的。
The realization and characterization of a high quality factor resonator composed of two hollow-dielectric cylinders with its pseudo-TM$_{030}$ mode resonating at 10.9 GHz frequency is discussed. The quality factor was measured at the temperatures 300 K and 4 K obtaining $\mbox{Q}_{300\mbox{K}}=(150,000\pm 2,000)$ and $\mbox{Q}_{4\mbox{K}}=(720,000\pm 10,000)$respectively, the latter corresponding to a gain of one order of magnitude with respect to a traditional copper cylindrical-cavity with the corresponding TM$_{010}$ mode resonating at the same frequency. The implications to dark-matter axion-searches with cavity experiments are discussed showing that the gain in quality factor is not spoiled by a reduced geometrical coupling $C_{030}$ of the cavity mode to the axion field. This reduction effect is estimated to be at most 20%. Numerical simulations show that frequency tuning of several hundreds MHz is feasible.
