Charge Distribution Dependency on Gap Thickness of CMS Endcap RPC

We report a systematic study of charge distribution dependency of CMS Resistive Plate Chamber (RPC) on gap thickness. Prototypes of double-gap RPCs with six different gap thickness ranging from from 1.0 to 2.0 mm in 0.2-mm steps have been built with 2-mm-thick phenolic high-pressure-laminated plates...

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Detalles Bibliográficos
Autores principales: Park, Sung K., Kang, Min Ho, Lee, Kyongsei
Lenguaje:eng
Publicado: 2016
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.1088/1748-0221/11/11/C11034
http://cds.cern.ch/record/2151514
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author Park, Sung K.
Kang, Min Ho
Lee, Kyongsei
author_facet Park, Sung K.
Kang, Min Ho
Lee, Kyongsei
author_sort Park, Sung K.
collection CERN
description We report a systematic study of charge distribution dependency of CMS Resistive Plate Chamber (RPC) on gap thickness. Prototypes of double-gap RPCs with six different gap thickness ranging from from 1.0 to 2.0 mm in 0.2-mm steps have been built with 2-mm-thick phenolic high-pressure-laminated plates. The efficiencies of the six gaps are measured as a function of the effective high voltages. We report that the strength of the electric fields of the gap is decreased as the gap thickness is increased. The distributions of charges in six gaps are measured. The space charge effect is seen in the charge distribution at the higher voltages. The logistic function is used to fit the charge distribution data. Smaller charges can be produced within smaller gas gap. But the digitization threshold should be also lowered to utilize these smaller charges.
id cern-2151514
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
record_format invenio
spelling cern-21515142022-03-25T07:47:50Zdoi:10.1088/1748-0221/11/11/C11034http://cds.cern.ch/record/2151514engPark, Sung K.Kang, Min HoLee, KyongseiCharge Distribution Dependency on Gap Thickness of CMS Endcap RPCDetectors and Experimental TechniquesWe report a systematic study of charge distribution dependency of CMS Resistive Plate Chamber (RPC) on gap thickness. Prototypes of double-gap RPCs with six different gap thickness ranging from from 1.0 to 2.0 mm in 0.2-mm steps have been built with 2-mm-thick phenolic high-pressure-laminated plates. The efficiencies of the six gaps are measured as a function of the effective high voltages. We report that the strength of the electric fields of the gap is decreased as the gap thickness is increased. The distributions of charges in six gaps are measured. The space charge effect is seen in the charge distribution at the higher voltages. The logistic function is used to fit the charge distribution data. Smaller charges can be produced within smaller gas gap. But the digitization threshold should be also lowered to utilize these smaller charges.We report on the results of a systematic study for the charge distribution dependency of CMS Resistive Plate Chamber (RPC) on the gap thickness. Prototypes of the double-gap RPCs with six different gap thicknesses ranging from 1.0 to 2.0 mm in 0.2 mm steps were built with 2 mm-thick phenolic high-pressure-laminated (HPL) plates. The efficiencies of the six gaps were measured as a function of the effective high voltages. We report that the strength of the electric field of the gap decreased as the gap thickness increased. The charge distribution in the six gaps was measured, and the space charge effect is seen in the charge distribution at high voltages near 95% efficiency. The logistic function is used to fit the charge distribution data, and smaller charges than charges within the current 2.0 mm gap are produced within smaller gas gaps. The digitization threshold should also be lowered to utilize these smaller charges.We report a systematic study of charge distribution dependency of CMS Resistive Plate Chamber (RPC) on gap thickness. Prototypes of double-gap RPCs with six different gap thickness ranging from from 1.0 to 2.0 mm in 0.2-mm steps have been built with 2-mm-thick phenolic high-pressure-laminated plates. The efficiencies of the six gaps are measured as a function of the effective high voltages. We report that the strength of the electric fields of the gap is decreased as the gap thickness is increased. The distributions of charges in six gaps are measured. The space charge effect is seen in the charge distribution at the higher voltages. The logistic function is used to fit the charge distribution data. Smaller charges can be produced within smaller gas gap. But the digitization threshold should be also lowered to utilize these smaller charges.arXiv:1605.02167oai:cds.cern.ch:21515142016-05-07
spellingShingle Detectors and Experimental Techniques
Park, Sung K.
Kang, Min Ho
Lee, Kyongsei
Charge Distribution Dependency on Gap Thickness of CMS Endcap RPC
title Charge Distribution Dependency on Gap Thickness of CMS Endcap RPC
title_full Charge Distribution Dependency on Gap Thickness of CMS Endcap RPC
title_fullStr Charge Distribution Dependency on Gap Thickness of CMS Endcap RPC
title_full_unstemmed Charge Distribution Dependency on Gap Thickness of CMS Endcap RPC
title_short Charge Distribution Dependency on Gap Thickness of CMS Endcap RPC
title_sort charge distribution dependency on gap thickness of cms endcap rpc
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.1088/1748-0221/11/11/C11034
http://cds.cern.ch/record/2151514
work_keys_str_mv AT parksungk chargedistributiondependencyongapthicknessofcmsendcaprpc
AT kangminho chargedistributiondependencyongapthicknessofcmsendcaprpc
AT leekyongsei chargedistributiondependencyongapthicknessofcmsendcaprpc

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