Speaker
Ziqing Hong
(Northwestern University)
Description
SuperCDMS SNOLab is using low energy threshold Si/Ge detectors for dark
matter direct searches. One mode of operation for the experiment runs detectors in a
high-voltage-biased mode, to use Neganov-Luke Amplification.
Understanding the ionization yield of low-energy nuclear recoils is
essential for interpreting dark matter search data taken in this mode. We present two
calibration experiments designed to measure the ionization yield with
the CDMS-style detectors in monoenergetic neutron beams. One experiment
is performed with an Adiabatic-Demagnetization Refrigerator at the TUNL
facility, and the other one with a Dilution Refrigerator in the
NEXUS@FNAL facility with a DD neutron generator. In this poster, we show
the experimental setups and simulation results of this calibration program.
Primary author
Ziqing Hong
(Northwestern University)