Operation of low-noise single-gap RPC modules exposed to ionisation rates up to 1 kHz/cm$^2$

Two single gap medium-size RPC modules, made of bakelite plates of very good mechanical quality of the surface and having initial volume resistivity of 1 multiplied by 10**1**0 omegacm, were tested in the Gamma Irradiation Facility at CERN at ionisation rates up to 1 kHz/cm **3. The internal surface...

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Detalles Bibliográficos
Autores principales: Cwiok, M, Dominik, Wojciech, Górski, M, Królikowski, J
Lenguaje:eng
Publicado: 2004
Materias:
Health Physics and Radiation Effects
Acceso en línea:https://dx.doi.org/10.1016/j.nima.2004.06.123
http://cds.cern.ch/record/818565
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author Cwiok, M
Dominik, Wojciech
Górski, M
Królikowski, J
author_facet Cwiok, M
Dominik, Wojciech
Górski, M
Królikowski, J
author_sort Cwiok, M
collection CERN
description Two single gap medium-size RPC modules, made of bakelite plates of very good mechanical quality of the surface and having initial volume resistivity of 1 multiplied by 10**1**0 omegacm, were tested in the Gamma Irradiation Facility at CERN at ionisation rates up to 1 kHz/cm **3. The internal surfaces facing the gas volume of one RPC module were cladded with a thin layer of linseed oil varnish for comparison of oiled and non-oiled RPC operation. The results refer to the gas mixture of C//2H//2F //4/isobutane (97:3) with SF//6 addition below 1%. The single gap modules exhibited full detection efficiency plateau for the high voltage range of about 1 kV at full intensity of gamma rays. Good timing characteristics allowed to reach 95% efficiency at fully opened irradiation source with time window of 20 ns. The intrinsic noise rate for a non-oiled and an oiled RPC gap was, respectively, below 5 and 1 Hz/cm**2 at full efficiency over 1 k V voltage range.
id cern-818565
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2004
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spelling cern-8185652019-09-30T06:29:59Zdoi:10.1016/j.nima.2004.06.123http://cds.cern.ch/record/818565engCwiok, MDominik, WojciechGórski, MKrólikowski, JOperation of low-noise single-gap RPC modules exposed to ionisation rates up to 1 kHz/cm$^2$Health Physics and Radiation EffectsTwo single gap medium-size RPC modules, made of bakelite plates of very good mechanical quality of the surface and having initial volume resistivity of 1 multiplied by 10**1**0 omegacm, were tested in the Gamma Irradiation Facility at CERN at ionisation rates up to 1 kHz/cm **3. The internal surfaces facing the gas volume of one RPC module were cladded with a thin layer of linseed oil varnish for comparison of oiled and non-oiled RPC operation. The results refer to the gas mixture of C//2H//2F //4/isobutane (97:3) with SF//6 addition below 1%. The single gap modules exhibited full detection efficiency plateau for the high voltage range of about 1 kV at full intensity of gamma rays. Good timing characteristics allowed to reach 95% efficiency at fully opened irradiation source with time window of 20 ns. The intrinsic noise rate for a non-oiled and an oiled RPC gap was, respectively, below 5 and 1 Hz/cm**2 at full efficiency over 1 k V voltage range.oai:cds.cern.ch:8185652004
spellingShingle Health Physics and Radiation Effects
Cwiok, M
Dominik, Wojciech
Górski, M
Królikowski, J
Operation of low-noise single-gap RPC modules exposed to ionisation rates up to 1 kHz/cm$^2$
title Operation of low-noise single-gap RPC modules exposed to ionisation rates up to 1 kHz/cm$^2$
title_full Operation of low-noise single-gap RPC modules exposed to ionisation rates up to 1 kHz/cm$^2$
title_fullStr Operation of low-noise single-gap RPC modules exposed to ionisation rates up to 1 kHz/cm$^2$
title_full_unstemmed Operation of low-noise single-gap RPC modules exposed to ionisation rates up to 1 kHz/cm$^2$
title_short Operation of low-noise single-gap RPC modules exposed to ionisation rates up to 1 kHz/cm$^2$
title_sort operation of low-noise single-gap rpc modules exposed to ionisation rates up to 1 khz/cm$^2$
topic Health Physics and Radiation Effects
url https://dx.doi.org/10.1016/j.nima.2004.06.123
http://cds.cern.ch/record/818565
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AT dominikwojciech operationoflownoisesinglegaprpcmodulesexposedtoionisationratesupto1khzcm2
AT gorskim operationoflownoisesinglegaprpcmodulesexposedtoionisationratesupto1khzcm2
AT krolikowskij operationoflownoisesinglegaprpcmodulesexposedtoionisationratesupto1khzcm2

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