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Development of the gas electron multiplier (GEM)

We describe recent developments of the Gas Electron Multiplier (GEM), a thin composite mesh acting as proportional avalanche amplifier in gas counters. In beam tests we have verified the excellent efficiency, time resolution and localization accuracy for a GEM with micro-strip read-out. Efficiency,...

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Detalles Bibliográficos
Autores principales: Benlloch, J M, Bressan, A, Büttner, C, Capéans-Garrido, M, Gruwé, M, Hoch, M, Labbé, J C, Placci, Alfredo, Ropelewski, Leszek, Sauli, Fabio, Sharma, A, Veenhof, R
Lenguaje:eng
Publicado: 1997
Materias:
Acceso en línea:https://dx.doi.org/10.1109/23.682386
http://cds.cern.ch/record/342526
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author Benlloch, J M
Bressan, A
Büttner, C
Capéans-Garrido, M
Gruwé, M
Hoch, M
Labbé, J C
Placci, Alfredo
Ropelewski, Leszek
Sauli, Fabio
Sharma, A
Veenhof, R
author_facet Benlloch, J M
Bressan, A
Büttner, C
Capéans-Garrido, M
Gruwé, M
Hoch, M
Labbé, J C
Placci, Alfredo
Ropelewski, Leszek
Sauli, Fabio
Sharma, A
Veenhof, R
author_sort Benlloch, J M
collection CERN
description We describe recent developments of the Gas Electron Multiplier (GEM), a thin composite mesh acting as proportional avalanche amplifier in gas counters. In beam tests we have verified the excellent efficiency, time resolution and localization accuracy for a GEM with micro-strip read-out. Efficiency, localization accuracy and operation in strong magnetic fields has been verified; operation at rates above 106 Hz/mm2 and lifetimes corresponding to at least 10 mC/cm of collected charge have been demonstrated. Refinements in the manufacturing technology have permitted the realization of large size detectors (27 by 25 cm2), to be used in conjunction with micro-strip gas chambers. With an improved design, stable gains above two thousand have been reached (GEM2000); larger gains can be obtained increasing the thickness of the foils, cascading two GEMs at some distance or in electrical contact. Further developments of the technology and prospective applications are discussed.
id cern-342526
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1997
record_format invenio
spelling cern-3425262019-09-30T06:29:59Zdoi:10.1109/23.682386http://cds.cern.ch/record/342526engBenlloch, J MBressan, ABüttner, CCapéans-Garrido, MGruwé, MHoch, MLabbé, J CPlacci, AlfredoRopelewski, LeszekSauli, FabioSharma, AVeenhof, RDevelopment of the gas electron multiplier (GEM)Detectors and Experimental TechniquesWe describe recent developments of the Gas Electron Multiplier (GEM), a thin composite mesh acting as proportional avalanche amplifier in gas counters. In beam tests we have verified the excellent efficiency, time resolution and localization accuracy for a GEM with micro-strip read-out. Efficiency, localization accuracy and operation in strong magnetic fields has been verified; operation at rates above 106 Hz/mm2 and lifetimes corresponding to at least 10 mC/cm of collected charge have been demonstrated. Refinements in the manufacturing technology have permitted the realization of large size detectors (27 by 25 cm2), to be used in conjunction with micro-strip gas chambers. With an improved design, stable gains above two thousand have been reached (GEM2000); larger gains can be obtained increasing the thickness of the foils, cascading two GEMs at some distance or in electrical contact. Further developments of the technology and prospective applications are discussed.CERN-PPE-97-146oai:cds.cern.ch:3425261997-11-11
spellingShingle Detectors and Experimental Techniques
Benlloch, J M
Bressan, A
Büttner, C
Capéans-Garrido, M
Gruwé, M
Hoch, M
Labbé, J C
Placci, Alfredo
Ropelewski, Leszek
Sauli, Fabio
Sharma, A
Veenhof, R
Development of the gas electron multiplier (GEM)
title Development of the gas electron multiplier (GEM)
title_full Development of the gas electron multiplier (GEM)
title_fullStr Development of the gas electron multiplier (GEM)
title_full_unstemmed Development of the gas electron multiplier (GEM)
title_short Development of the gas electron multiplier (GEM)
title_sort development of the gas electron multiplier (gem)
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.1109/23.682386
http://cds.cern.ch/record/342526
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