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Presented By: HEP - Astro Seminars

HEP-Astro Seminar | The SPICE and HeRALD Experiments for Sub-GeV Dark Matter Direct Detection

Scott Hertel (University of Massachusetts)

The SPICE and HeRALD experiments aim to probe dark matter (DM) masses at the MeV masses via nuclear recoils. This sensitivity motivates R&D which is now pushing the recoil energy threshold of Transition Edge Sensors (TESs) into the meV regime before then applying these next-generation phonon sensors to a set of well-motivated target materials. The superfluid 4He target (HeRALD) will benefit from both a low-mass target nucleus and a unique quantum evaporation phonon readout method. The complementary SPICE effort employs polar crystal target materials, motivated by their low-momentum phonon states and strong coupling to dark photon couplings.

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