Cargando…

The $\mu$-RWELL for high rate application

The micro-Resistive WELL ($\mu $-RWELL) is a compact, simple and robust Micro-Pattern Gaseous Detector (MPGD) developed for large area HEP applications requiring the operation in harsh environment. The detector amplification stage, similar to a GEM foil, is realized with a polyimide structure micro-...

Descripción completa

Detalles Bibliográficos
Autores principales: Bencivenni, G, De Oliveira, R, Felici, G, Gatta, M, Giovannetti, M, Morello, G, Poli Lener, M
Lenguaje:eng
Publicado: 2020
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1748-0221/15/09/C09034
http://cds.cern.ch/record/2749009
_version_ 1780969023318523904
author Bencivenni, G
De Oliveira, R
Felici, G
Gatta, M
Giovannetti, M
Morello, G
Poli Lener, M
author_facet Bencivenni, G
De Oliveira, R
Felici, G
Gatta, M
Giovannetti, M
Morello, G
Poli Lener, M
author_sort Bencivenni, G
collection CERN
description The micro-Resistive WELL ($\mu $-RWELL) is a compact, simple and robust Micro-Pattern Gaseous Detector (MPGD) developed for large area HEP applications requiring the operation in harsh environment. The detector amplification stage, similar to a GEM foil, is realized with a polyimide structure micro-patterned with a blind-hole matrix, embedded through a thin Diamond-Like-Carbon (DLC) resistive layer with the readout PCB. The introduction of a resistive layer ($\rho $= 50÷20 M$\Omega $/$\square $) mitigating the transition from streamer to spark gives the possibility to achieve large gains (>10$^{4}$), while affecting the detector performance in terms of rate capability. Different detector layouts have been studied: the most simple one based on a single-resistive layer, with edge grounding has been designed for low-rate applications (few tens of kHz/cm$^{2}$); more sophisticated schemes have been studied for high-rate purposes (0$\geq $1 MHz/cm$^{2}$). An overview of the different architectures studied for the high-rate version of the detector, together with their performance will be presented. The presence of the resistive layer also affects the charge spread on the strips and consequently the spatial resolution of the detector: a systematic study of the spatial resolution obtained with the charge centroid (CC) method as a function of the impinging angle was made. For non-orthogonal tracks the spatial resolution with CC method is compared with the performance obtained with the micro-TPC mode ($\mu $TPC): a readout approach that exploits the combined measurement of the ionization clusters time of arrival and the amplitude of the signals on the strips. Implementing the $\mu $TPC allows reaching an almost flat space resolution <100 $\mu $ m for a wide angular range. Finally the results of the detector aging campaign is presented, with detectors integrating up to 175 mC/cm$^{2}$ and bare DLC foils integrating a charge up to 800 mC/cm$^{2}$.
id oai-inspirehep.net-1817825
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2020
record_format invenio
spelling oai-inspirehep.net-18178252021-02-09T22:54:50Zdoi:10.1088/1748-0221/15/09/C09034http://cds.cern.ch/record/2749009engBencivenni, GDe Oliveira, RFelici, GGatta, MGiovannetti, MMorello, GPoli Lener, MThe $\mu$-RWELL for high rate applicationDetectors and Experimental TechniquesThe micro-Resistive WELL ($\mu $-RWELL) is a compact, simple and robust Micro-Pattern Gaseous Detector (MPGD) developed for large area HEP applications requiring the operation in harsh environment. The detector amplification stage, similar to a GEM foil, is realized with a polyimide structure micro-patterned with a blind-hole matrix, embedded through a thin Diamond-Like-Carbon (DLC) resistive layer with the readout PCB. The introduction of a resistive layer ($\rho $= 50÷20 M$\Omega $/$\square $) mitigating the transition from streamer to spark gives the possibility to achieve large gains (>10$^{4}$), while affecting the detector performance in terms of rate capability. Different detector layouts have been studied: the most simple one based on a single-resistive layer, with edge grounding has been designed for low-rate applications (few tens of kHz/cm$^{2}$); more sophisticated schemes have been studied for high-rate purposes (0$\geq $1 MHz/cm$^{2}$). An overview of the different architectures studied for the high-rate version of the detector, together with their performance will be presented. The presence of the resistive layer also affects the charge spread on the strips and consequently the spatial resolution of the detector: a systematic study of the spatial resolution obtained with the charge centroid (CC) method as a function of the impinging angle was made. For non-orthogonal tracks the spatial resolution with CC method is compared with the performance obtained with the micro-TPC mode ($\mu $TPC): a readout approach that exploits the combined measurement of the ionization clusters time of arrival and the amplitude of the signals on the strips. Implementing the $\mu $TPC allows reaching an almost flat space resolution <100 $\mu $ m for a wide angular range. Finally the results of the detector aging campaign is presented, with detectors integrating up to 175 mC/cm$^{2}$ and bare DLC foils integrating a charge up to 800 mC/cm$^{2}$.oai:inspirehep.net:18178252020
spellingShingle Detectors and Experimental Techniques
Bencivenni, G
De Oliveira, R
Felici, G
Gatta, M
Giovannetti, M
Morello, G
Poli Lener, M
The $\mu$-RWELL for high rate application
title The $\mu$-RWELL for high rate application
title_full The $\mu$-RWELL for high rate application
title_fullStr The $\mu$-RWELL for high rate application
title_full_unstemmed The $\mu$-RWELL for high rate application
title_short The $\mu$-RWELL for high rate application
title_sort $\mu$-rwell for high rate application
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.1088/1748-0221/15/09/C09034
http://cds.cern.ch/record/2749009
work_keys_str_mv AT bencivennig themurwellforhighrateapplication
AT deoliveirar themurwellforhighrateapplication
AT felicig themurwellforhighrateapplication
AT gattam themurwellforhighrateapplication
AT giovannettim themurwellforhighrateapplication
AT morellog themurwellforhighrateapplication
AT polilenerm themurwellforhighrateapplication
AT bencivennig murwellforhighrateapplication
AT deoliveirar murwellforhighrateapplication
AT felicig murwellforhighrateapplication
AT gattam murwellforhighrateapplication
AT giovannettim murwellforhighrateapplication
AT morellog murwellforhighrateapplication
AT polilenerm murwellforhighrateapplication