Proportional counters aged anode wire recovering using an 80%CF4 + 20%CO2 gas mixture

A technique to recover a gas proportional counter having an aged anode wire using a glow discharge in an 80%CF4 + 20%CO2 gas mixture has been developed and tested. Studies of aging effects were carried out under sustained irradiation by an intense 90Sr -source of the straw proportional counters op...

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Autores principales: Gavrilov, Gennady, Aksenov, Dmitry, Conti, Richard, Fetisov, Andrey, Maysuzenko, Dmitry, Shvecova, Natalia, Vakhtel, Victor
Lenguaje:eng
Publicado: 2011
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/1353259
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author Gavrilov, Gennady
Aksenov, Dmitry
Conti, Richard
Fetisov, Andrey
Maysuzenko, Dmitry
Shvecova, Natalia
Vakhtel, Victor
author_facet Gavrilov, Gennady
Aksenov, Dmitry
Conti, Richard
Fetisov, Andrey
Maysuzenko, Dmitry
Shvecova, Natalia
Vakhtel, Victor
author_sort Gavrilov, Gennady
collection CERN
description A technique to recover a gas proportional counter having an aged anode wire using a glow discharge in an 80%CF4 + 20%CO2 gas mixture has been developed and tested. Studies of aging effects were carried out under sustained irradiation by an intense 90Sr -source of the straw proportional counters operated with a 60%Ar + 30%CO2 + 10%CF4 gas mixture. Special attention was paid to the aging mechanism of the anode wires. Our experience showed that using a given gas mixture the swelling of the anode wires is a typical mode of aging that leads to degradation of the gas gain. The proposed method of recovery provided a complete restoration of the gas gain and the signal amplitude in the damaged zone of the wire. SEM/XEM analysis confirmed successful cleaning WOx deposits from the wire surface. The application of this method to recover the aged gaseous detectors in real experimental conditions is discussed.
id cern-1353259
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-13532592019-09-30T06:29:59Zhttp://cds.cern.ch/record/1353259engGavrilov, GennadyAksenov, DmitryConti, RichardFetisov, AndreyMaysuzenko, DmitryShvecova, NataliaVakhtel, VictorProportional counters aged anode wire recovering using an 80%CF4 + 20%CO2 gas mixture Detectors and Experimental TechniquesA technique to recover a gas proportional counter having an aged anode wire using a glow discharge in an 80%CF4 + 20%CO2 gas mixture has been developed and tested. Studies of aging effects were carried out under sustained irradiation by an intense 90Sr -source of the straw proportional counters operated with a 60%Ar + 30%CO2 + 10%CF4 gas mixture. Special attention was paid to the aging mechanism of the anode wires. Our experience showed that using a given gas mixture the swelling of the anode wires is a typical mode of aging that leads to degradation of the gas gain. The proposed method of recovery provided a complete restoration of the gas gain and the signal amplitude in the damaged zone of the wire. SEM/XEM analysis confirmed successful cleaning WOx deposits from the wire surface. The application of this method to recover the aged gaseous detectors in real experimental conditions is discussed. CERN-OPEN-2011-021oai:cds.cern.ch:13532592011-03-25
spellingShingle Detectors and Experimental Techniques
Gavrilov, Gennady
Aksenov, Dmitry
Conti, Richard
Fetisov, Andrey
Maysuzenko, Dmitry
Shvecova, Natalia
Vakhtel, Victor
Proportional counters aged anode wire recovering using an 80%CF4 + 20%CO2 gas mixture
title Proportional counters aged anode wire recovering using an 80%CF4 + 20%CO2 gas mixture
title_full Proportional counters aged anode wire recovering using an 80%CF4 + 20%CO2 gas mixture
title_fullStr Proportional counters aged anode wire recovering using an 80%CF4 + 20%CO2 gas mixture
title_full_unstemmed Proportional counters aged anode wire recovering using an 80%CF4 + 20%CO2 gas mixture
title_short Proportional counters aged anode wire recovering using an 80%CF4 + 20%CO2 gas mixture
title_sort proportional counters aged anode wire recovering using an 80%cf4 + 20%co2 gas mixture
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1353259
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AT aksenovdmitry proportionalcountersagedanodewirerecoveringusingan80cf420co2gasmixture
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AT maysuzenkodmitry proportionalcountersagedanodewirerecoveringusingan80cf420co2gasmixture
AT shvecovanatalia proportionalcountersagedanodewirerecoveringusingan80cf420co2gasmixture
AT vakhtelvictor proportionalcountersagedanodewirerecoveringusingan80cf420co2gasmixture

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