Conductivity and charge depletion aging of resistive electrodes for high rate RPCs

Development of new electrodes is a key element for the improvement of high rate Resistive Plate Chambers (RPC). In the particular case of resistive electrodes, the fabrication of these elements is a challenging problem from a material science point of view. The combination of resistivity, permittivi...

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Bibliographic Details
Published in:Journal of instrumentation 2013-01, Vol.8 (1), p.P01022-P01022
Main Authors: Morales, M, Pecharromán, C, Mata-Osoro, G, Díaz, L A, Garzón, J A
Format: Article
Language:English
Subjects:
Charge
Dielectric constant
Electrical resistivity
Electrodes
Instrumentation
Permittivity
Plates
Resistive plate chambers
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Summary:Development of new electrodes is a key element for the improvement of high rate Resistive Plate Chambers (RPC). In the particular case of resistive electrodes, the fabrication of these elements is a challenging problem from a material science point of view. The combination of resistivity, permittivity and stability requirements is really hard to satisfy for any known material. Only a few materials have been found to be suitable for fabrication of resistive plates. In this work, we have carried out electrical characterizations of some of the materials that are currently used in RPCs or are solid candidates to be used as resistive plates in high rate RPCs. As a result, we have found strong evidences that ion conduction processes under moderate to high electric fields are able to drift high amounts of charge which allow to understand the degradation nature of the involved processes.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/8/01/P01022