A Method for monitoring the stability of photomultipliers
BONUTTI, FAUSTINO
•
•
N. Grion
altro
P. Amaudruz
1993
Periodico
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT
Abstract
A method for monitoring hundreds of photomultipliers has been developed in conjunction with the first level trigger of the pion spectrometer CHAOS being constructed at TRIUMF. The system for monitoring the photomultiplier gain stability simply consists of a xenon lamp which operates in the nanosecond time region, a light guide which diffuses the light, and bundles of optical fibers which transport the light to photocathodes. The photomultiplier gain stability can be probed up to few percent (FWHM).
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