Orateur
Dr
Antonio Bento
(Max-Planck-Institut Fuer Physik Muenchen)
Description
An important aspect of Dark Matter search experiments is the active background reduction by identification of the type particle interacting in the detector. In CRESST this is achieved by a simultaneous detection of heat and light produced by an interaction in a scintillating absorber. The overall light collection efficiency is a crucial parameter in order to achieve enough sensitivity to measure the small fraction of the deposited energy that is emitted as scintillation light.
With this purpose a thin superconducting lead film deposited on sapphire substrates has been tested as an alternative light absorber to a standard silicon absorber.
The first results already show a better light absorption of the lead film. Other superconducting films are also being analyzed.
Author
Dr
Antonio Bento
(Max-Planck-Institut Fuer Physik Muenchen)
