Abstract
To improve surface event rejection for the SuperCDMS experiment, we have designed, fabricated and tested a new detector concept where ionization electrodes are interleaved with phonon sensors on both sides of the detector. This i-(interleaved)-ZIP concept has electrical fields tangential to all detector surfaces. A surface event will produce an ionization signal in one charge read out channel, whereas an event within the bulk of the crystal will cause a signal in both charge read out channels. In addition, the symmetric phonon channels on both sides of the crystal, two semicircles on one side for x and two on the other for y, allow three-dimensional reconstruction of event locations through time delays and relative energy collection between the four phonon channels. Preliminary results from a 100 g Si prototype are presented.
Original language | English (US) |
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Pages (from-to) | 414-416 |
Number of pages | 3 |
Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
Volume | 559 |
Issue number | 2 |
DOIs | |
State | Published - Apr 14 2006 |
Keywords
- Cold dark matter
- Surface ionization detector
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation