SuperCDMS (Cryogenic Dark Matter Search) SNOLAB

Yen-Yung Chang (for SuperCDMS Collaboration)^1*

¹Division of Physics, Mathematics, & Astronomy, California Institute of Technology, California, USA

* Presenter:Yen-Yung Chang (for SuperCDMS Collaboration), email:yychang@caltech.edu

SuperCDMS SNOLAB is a next generation experiment for direct detection of dark matter (DM). It utilizes cryogenic Ge/Si crystal with superconducting Transition Edge Sensor (TES) for phonon-mediated recoil detection. It will search for low mass dark matter in 0.5-10 GeV mass range with a sensitivity down to 10^-43 cm² DM-nucleon scattering cross section. It will begin taking data in 2020. I will begin with a brief introduction to the experimental principle and design, its background expectation, and then discuss its complementary iZIP and HV detectors. These one-of-a-kind detectors enable two parallel DM searches: one, at higher masses, using the full electron-nuclear recoil discrimination of the iZIP detectors; and second, using Neganov-Trofimov-Luke amplification to reach down below 1 GeV without background discrimination. I will conclude the talk with SuperCDMS SNOLAB projected sensitivity and ongoing R&D efforts to open the possibility for future lower mass DM searches.

Keywords: dark matter, low-mass search, cryogenic detector