Bocci, V. and Chao, D. and Chiodi, G. and Faccini, R. and Ferroni, F. and Lunadei, R. and Martellotti, G. and Penso, G. and Pinci, D. and Recchia, L. (2012) Dependence of the energy resolution of a scintillating crystal on the readout integration time. Journal of Instrumentation, 7 (9). Art. No. P09014. ISSN 1748-0221. doi:10.1088/1748-0221/7/09/P09014. https://resolver.caltech.edu/CaltechAUTHORS:20130115-105921501
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Abstract
The possibilty of performing high-rate calorimetry with a slow scintillating crystal is studied. In this experimental situation, to avoid pulse pile-up, it can be necessary to base the energy measurement on only a fraction of the emitted light, thus spoiling the energy resolution. This effect was experimentally studied with a BGO crystal and a photomultiplier followed by an integrator, by measuring the maximum amplitude of the signals. The experimental data show that the energy resolution is exclusively due to the statistical fluctuations of the number of photoelectrons contributing to the maximum amplitude. When such number is small its fluctuations are even smaller than those predicted by Poisson statistics. These results were confirmed by a Monte Carlo simulation which allows to estimate, in a general case, the energy resolution, given the total number of photoelectrons, the scintillation time and the integration time.
Item Type: | Article | ||||||||||||
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Additional Information: | © 2012 Institute of Physics. Received: July 23, 2012. Accepted: September 4, 2012. Published: September 24, 2012. | ||||||||||||
Subject Keywords: | Gamma detectors (scintillators, CZT, HPG, HgI etc); Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators); Calorimeters | ||||||||||||
Issue or Number: | 9 | ||||||||||||
Classification Code: | PACS: 29.40.Mc, 85.60.Ha, 29.40.Vj, 07.50.Qx | ||||||||||||
DOI: | 10.1088/1748-0221/7/09/P09014 | ||||||||||||
Record Number: | CaltechAUTHORS:20130115-105921501 | ||||||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20130115-105921501 | ||||||||||||
Official Citation: | Dependence of the energy resolution of a scintillating crystal on the readout integration time V Bocci et al 2012 JINST 7 P09014 | ||||||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||
ID Code: | 36388 | ||||||||||||
Collection: | CaltechAUTHORS | ||||||||||||
Deposited By: | Ruth Sustaita | ||||||||||||
Deposited On: | 15 Jan 2013 21:09 | ||||||||||||
Last Modified: | 09 Nov 2021 23:21 |
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