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https://hdl.handle.net/10316/4377
Título: | Accurate timing of gamma rays with high-rate Resistive Plate Chambers | Autor: | Lopes, L. Pereira, A. Fonte, P. Marques, R. Ferreira |
Palavras-chave: | High-rate | Data: | 2007 | Citação: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 573:1-2 (2007) 4-7 | Resumo: | The counting rate capability of RPCs is strongly conditioned by the availability of suitable resistive materials for the electrodes. For time-of-flight measurements in heavy-ion high-energy physics, the extension of the counting rate capabilities achievable with glass electrodes, around 2 kHz/cm2, to much higher values is of fundamental importance. To address this issue we developed single-gap tRPCs with electrodes made from metal and from a commercially available ceramic material free of charge-depletion effects. Tests performed with 511 keV photons yielded a time resolution around 90 ps [sigma]. Neither the time resolution nor the efficiency have been affected by background rates of up to 20 kHz/cm2 produced with photons from an X-ray generator. The present result establishes the practical feasibility of accurate timing measurements with RPCs at rates up to 20 kHz/cm2, while keeping a time resolution below 100 ps [sigma]. | URI: | https://hdl.handle.net/10316/4377 | DOI: | 10.1016/j.nima.2006.10.245 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Física - Artigos em Revistas Internacionais |
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Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
file3ad541b13aa44b7fa0e39763b476cbb3.pdf | 176.19 kB | Adobe PDF | Ver/Abrir |
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