Charge collection and electrode structures in ionization and phonon based dark matter detectors

Creators: Shutt, T.; Kesden, M.; Golwala, S.; Emes, J.; Hellmig, J.; Sadoulet, B.; Young, B. A.; CDMS Detector Group

Others:: Porter, F. Scott; McCammon, Dan; Galeazzi, Massimiliano; Stahle, Caroline K.

Abstract

We report on progress in our understanding of the physics of of implanted contacts, amorphous layer structures and Schottky contacts on detectors based on the simultaneous ionization and phonon based at 20 mK. Loss of charge for events near the contacts limits the capabilities of these detectors for detecting dark matter, an effect which is minimized by use of amorphous blocking layers.

Additional Information

© 2002 American Institute of Physics. Issue Date: February 5, 2002. The experimental aspects of this work were supported by the Center for Particle Astrophysics, a NSF Science and Technology Center operated by the University of California, Berkeley, under Cooperative Agreement No. AST-91-20005, by the National Science Foundation under Grant No. PHY-9722414, and by the Department of Energy under contracts DE-AC03-76SF00098, DE-FG03-90ER40569, and DE-FG03-91ER40618.

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