SuperCDMS SNOLAB Low-Mass Detectors: Ultra-Sensitive Phonon Calorimeters for a Sub-GeV Dark Matter Search

Kavli Affiliate: Paul Brink

| First 5 Authors: Noah Kurinsky, Paul Brink, Richard Partridge, Blas Cabrera, Matt Pyle

| Summary:

We present the technical design for the SuperCDMS high-voltage, low-mass dark
matter detectors, designed to be sensitive to dark matter down to 300 MeV/$c^2$
in mass and resolve individual electron-hole pairs from low-energy scattering
events in high-purity Ge and Si crystals. In this paper we discuss some of the
studies and technological improvements which have allowed us to design such a
sensitive detector, including advances in phonon sensor design and detector
simulation. With this design we expect to achieve better than 10 eV (5 eV)
phonon energy resolution in our Ge (Si) detectors, and recoil energy resolution
below 1eV by exploiting Luke-Neganov phonon generation of charges accelerated
in high fields.

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