arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.05605hep-exhep-phphysics.ins-det
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再论轴子星宿探测器的探测率

Revisiting the detection rate for axion haloscopes

Dongok Kim, Junu Jeong, SungWoo Youn, Younggeun Kim, Yannis K. Semertzidis

摘要:

腔晕镜已被用来探测在强磁场作用下不可见宇宙轴子共振转换的微波光子。在该方案中,轴子-光子转换功率已被公式化为对于某些条件有效,无论是$Q_{cavity}\ll Q_{\rm axion}$还是$Q_{cavity} \gg Q_{axion}$。然而,当这两个量彼此相当时,这种补救方法就失败了。此外,噪声功率流已被视为独立的阻抗失配的系统,这可能会引起误导的实验灵敏度的估计。我们重新审视的分析方法,得到一个一般的描述的信号和噪声功率。我们还优化了接收器的耦合强度,以产生最大的灵敏度轴子搜索实验。

英文摘要:

The cavity haloscope has been employed to detect microwave photons resonantly converted from invisible cosmic axions under a strong magnetic field. In this scheme, the axion-photon conversion power has been formulated to be valid for certain conditions, either $Q_{cavity}\ll Q_{\rm axion}$ or $Q_{cavity} \gg Q_{axion}$. This remedy, however, fails when these two quantities are comparable to each other. Furthermore, the noise power flow has been treated independently of the impedance mismatch of the system, which could give rise to misleading estimates of the experimental sensitivity. We revisit the analytical approaches to derive a general description of the signal and noise power. We also optimize the coupling strength of a receiver to yield the maximal sensitivity for axion search experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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