Design And Test Of A Prototype Gas-Sampling Electromagnetic Calorimeter Of High Granularity For The Cplear Experiment
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT(1992)
Abstract
We have designed and tested a gas-sampling calorimeter of high granularity as a prototype for the electromagnetic calorimeter of the CPLEAR experiment. The prototype calorimeter, consisting of 18 layers of 1.5 mm thin lead converters interleaved with a total of 1152 high-gain tubes and 2304 pick-up strips, was tested in a tagged photon beam with photons in the energy range of 50 to 350 MeV. It well fulfilled the requirements of a good detection efficiency for photons above 50 MeV with a spatial resolution sigma almost-equal-to 5 mm for the photon conversion point and an energy resolution sigma(E)/E almost-equal-to 15% square-root E[GeV].
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Key words
spatial resolution
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