Low-energy threshold demonstration for dark matter searches in TREX-DM with an ${}^{37}$Ar source produced at CNA HiSPANoS

J. Castel, S. Cebrián, T. Dafni +16

We report on the successful implementation of an ${}^{37}$Ar calibration source in the TREX-DM detector, a high-pressure time projection chamber designed for low-mass dark matter sea…