Physics – Instrumentation and Detectors
Scientific paper
2008-09-19
Nucl.Instrum.Meth.A610:431-435,2009
Physics
Instrumentation and Detectors
Proceedings of NDIP-2008. 8 pages, 8 figures, 6 references
Scientific paper
10.1016/j.nima.2009.05.105
A Cosmic Ray Test Facility (CRTF) is the first large-scale implementation of a scintillation triggering system based on a new scintillation technique known as START. In START, the scintillation light is collected and transported by WLS optical fibers, while light detection is performed by pairs of avalanche photodiodes with the Metal-Resistor-Semiconductor structure operated in the Geiger mode (MRS APD). START delivers 100% efficiency of cosmic muon detection, while its intrinsic noise level is less than 10^{-2} Hz. CRTF, consisting of 160 START channels, has been continuously operated by the ALICE TOF collaboration for more than 25 000 hours, and has demonstrated a high level of stability. Fewer than 10% of MRS APDs had to be replaced during this period.
Akindinov A.
Golovin V.
Grigoriev Evgeniy
Grishuk Yu.
Kuleshov Sergey
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