Taiwan axion search experiment with haloscope: Designs and operations

Hsin Chang; Jing-Yang Chang; Yi-Chieh Chang; Yu-Han Chang; Yuan-Hann Chang; Chien-Han Chen; Ching-Fang Chen; Kuan-Yu Chen; Yung-Fu Chen; Wei-Yuan Chiang; Wei-Chen Chien; Hien Thi Doan; Wei-Cheng Hung; Watson Kuo; Shou-Bai Lai; Han-Wen Liu; Min-Wei OuYang; Ping-I Wu; Shin-Shan Yu

doi:10.1063/5.0098783

Taiwan axion search experiment with haloscope: Designs and operations

Rev Sci Instrum. 2022 Aug 1;93(8):084501. doi: 10.1063/5.0098783.

Authors

Hsin Chang¹, Jing-Yang Chang¹, Yi-Chieh Chang², Yu-Han Chang³, Yuan-Hann Chang⁴, Chien-Han Chen⁴, Ching-Fang Chen¹, Kuan-Yu Chen¹, Yung-Fu Chen¹, Wei-Yuan Chiang², Wei-Chen Chien³, Hien Thi Doan⁴, Wei-Cheng Hung¹, Watson Kuo³, Shou-Bai Lai¹, Han-Wen Liu¹, Min-Wei OuYang¹, Ping-I Wu¹, Shin-Shan Yu¹

Affiliations

¹ Department of Physics, National Central University, Taoyuan City 320317, Taiwan.
² National Synchrotron Radiation Research Center, Hsinchu 300092, Taiwan.
³ Department of Physics, National Chung Hsing University, Taichung City 402202, Taiwan.
⁴ Institute of Physics, Academia Sinica, Taipei City 115201, Taiwan.

PMID: 36050105
DOI: 10.1063/5.0098783

Abstract

We report on a holoscope axion search experiment near 19.6 µeV from the Taiwan Axion Search Experiment with Haloscope collaboration. This experiment is carried out via a frequency-tunable cavity detector with a volume V = 0.234 liter in a magnetic field B₀ = 8 T. With a signal receiver that has a system noise temperature T_sys ≅ 2.2 K and an experiment time of about one month, the search excludes values of the axion-photon coupling constant g_aγγ ≳ 8.1 × 10^-14 GeV^-1, a factor of 11 above the Kim-Shifman-Vainshtein-Zakharov benchmark model, at the 95% confidence level in the mass range of 19.4687-19.8436 µeV. We present the experimental setup and procedures to accomplish this search.