Physics – Instrumentation and Detectors
Scientific paper
2005-09-09
Nucl.Instrum.Meth.A573:302-305,2007
Physics
Instrumentation and Detectors
Submitted to the Proceedings of the PSD-7 Conf. in Liverpool, UK
Scientific paper
10.1016/j.nima.2006.10.264
There are several proposals and projects today for building LXe Time Projection Chambers (TPCs) for dark matter search. An important element of these TPCs are the photomultipliers operating either inside LXe or in vapors above the liquid. We have recently demonstrated that photosensitive gaseous detectors (wire type and hole-type) can operate perfectly well until temperatures of LN2. In this paper results of systematic studies of operation of the photosensitive version of these detectors (combined with reflective or semi-transparent CsI photocathodes) in the temperature interval of 300-150 K are presented. In particular, it was demonstrated that both sealed and flushed by a gas detectors could operate at a quite stable fashion in a year/time scale. Obtained results, in particular the long-term stability of photosensitive gaseous detectors, strongly indicate that they can be cheap and simple alternatives to photomultipliers or avalanche solid-state detectors in LXe TPC applications.
Iacobaeus C.
Lund-Jensen Bengt
Periale L.
Peskov V.
Picchi P.
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