Chang Hsin, Chang Jing-Yang, Chang Yi-Chieh, Chang Yu-Han, Chang Yuan-Hann, Chen Chien-Han, Chen Ching-Fang, Chen Kuan-Yu, Chen Yung-Fu, Chiang Wei-Yuan, Chien Wei-Chen, Doan Hien Thi, Hung Wei-Cheng, Kuo Watson, Lai Shou-Bai, Liu Han-Wen, OuYang Min-Wei, Wu Ping-I, Yu Shin-Shan
Department of Physics, National Central University, Taoyuan City 320317, Taiwan.
National Synchrotron Radiation Research Center, Hsinchu 300092, Taiwan.
Rev Sci Instrum. 2022 Aug 1;93(8):084501. doi: 10.1063/5.0098783.
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 B = 8 T. With a signal receiver that has a system noise temperature T ≅ 2.2 K and an experiment time of about one month, the search excludes values of the axion-photon coupling constant g ≳ 8.1 × 10 GeV, 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.