FINER receiver used for a dark photon search (DOSUE-RR)

Before its shipment to the LMT, the FINER Band 6+7 receiver (210–350 GHz) is being used at NAOJ by DOSUE-RR, an experiment that searches for dark matter with radio waves. The team led by Okayama University, including Associate Professor Adachi, installed its own calibration and readout system on FINER and started the search for dark photons in the 0.9–1.4 meV mass range on 6 April 2026. See the announcement by Okayama University (in Japanese).