Final Technical Report for DUSEL Research and Development on Sub-Kelvin Germanium Detectors for Ton Scale Dark Matter Search

Cabrera, Blas

关键词: germanium particle detectors;    cryogenic detectors;    dark matter;   

DOI  :  10.2172/1050238
RP-ID  :  DOE/ER41480-1
PID  :  OSTI ID: 1050238

美国|英语

来源: SciTech Connect

【 摘 要 】

We have supported one graduate student and a small percentage of fabrication staff on $135k per year for three years plus one no cost extension year on this DUSEL R&D grant. There were three themes within our research program: (1) how to improve the radial sensitivity for single sided phonon readout with four equal area sensors of which three form a central circle and fourth a surrounding ring; (2) how to instrument double sided phonon readouts which will give us better surface event rejection and increased fiducial volume for future CDMS style detectors; and (3) can we manufacture much larger Ge detectors using six inch diameter material which is not suitable for standard gamma ray spectroscopy.