Title :
Development of a cryogenic dark matter detector
Author :
Shutt, T. ; Wang, N. ; Cummings, A. ; Sadoulet, B. ; Barnes, P. ; Emes, J. ; Giraud-Héraud, Y. ; Lange, A. ; Rich, J. ; Ross, R. ; Beeman, J. ; Haller, E.E.
Author_Institution :
Center for Particle Astrophys., California Univ., Berkeley, CA, USA
fDate :
4/1/1990 12:00:00 AM
Abstract :
The continuing development of a cryogenic dark matter detector is described. 60-keV gamma pulses with submicrosecond risetimes have been observed in neutron transmission doped (NTD) germanium thermistors, consistent with the hot electron model. The authors have also developed a eutectic bonding method for attaching thermistors to a larger crystal, and they discuss preliminary studies of the phonon transmission qualities of this technique. They report on the measurement of ionization created by particle interactions in a pure germanium crystal with applied bias fields as low as 1 V/cm
Keywords :
astronomical instruments; cosmic background radiation; cosmic ray apparatus; cryogenics; gamma-ray detection and measurement; ionisation; particle detectors; thermistors; 60 keV; Ge; astronomical missing mass; cosmic background radiation; cosmology; cryogenic dark matter detector; crystal; elementary particle; eutectic bonding; gamma pulses; hot electron model; hypothetical particle; instrumentation; ionization; neutron transmission doped; particle interactions; phonon transmission; submicrosecond risetimes; thermistors; Bonding; Cryogenics; Electrons; Gamma ray detection; Gamma ray detectors; Germanium; Joining processes; Neutrons; Phonons; Thermistors;
Journal_Title :
Nuclear Science, IEEE Transactions on
