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

摘要

We present the technical design for the SuperCDMS high-voltage, low-mass darkmatter 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 scatteringevents in high-purity Ge and Si crystals. In this paper we discuss some of thestudies and technological improvements which have allowed us to design such asensitive detector, including advances in phonon sensor design and detectorsimulation. With this design we expect to achieve better than 10 eV (5 eV)phonon energy resolution in our Ge (Si) detectors, and recoil energy resolutionbelow 1eV by exploiting Luke-Neganov phonon generation of charges acceleratedin high fields.