Preliminary study for a new axion dark-matter haloscope

Abstract

A new haloscope for Axion dark-matter search is under study using in a first step the large bore superconducting magnet in construction at the LNCMI in Grenoble, which will produce 9 T in 812 mm diameter and 1400 mm height. Microwave cavities of high quality factor Q ~ 105 - 106 will be developed at CAPP/IBS in Daejeon. Low-noise microwave amplification of the signal will be ensured by DC superconducting quantum interference devices (SQUID) or/and Josephson parametric amplifiers (JPA) cooled-down to 20 mK by a 3He/4He dilution refrigerator. This new haloscope will be designed to probe QCD dark-matter Axions in the mass range of 1-100 μeV with unprecedented sensitivity.