University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Monday, April 10th 2017
12:15 pm:
Speaker: D'Ann Barker, UMN
Subject: Low Energy Background Model for CDMSlite

One trend in dark matter direct detection is the development of techniques which will lower experimental thresholds and achieve sensitivity to low-mass dark matter particles. In doing so, it is necessary to have an understanding of the low energy spectrum and the major background components. To understand this region for the Super Cryogenic Dark Matter Search (SuperCDMS), a variety of specialized low energy models have been simulated and compared against theoretical calculations and SuperCDMS data. An important application of this model is to the CDMS low ionization threshold experiment (CDMSlite). CDMSlite has reached world-leading sensitivities in the search for low-mass weakly interacting massive particle dark matter. The sensitivity of the current data can be improved by understanding and modeling the experimental backgrounds down to threshold. Development of the machinery for creating a low energy background model will also be useful in the future SuperCDMS SNOLAB experiment which will operate multiple high voltage detectors in a manner similar to CDMSlite.

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