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Live event reconstruction in an optically read out GEM-based TPC

Combining strong signal amplification made possible by Gaseous Electron Multipliers (GEMs) with the high spatial resolution provided by optical readout, highly performing radiation detectors can be realized. An optically read out GEM-based Time Projection Chamber (TPC) is presented. The device permi...

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Autores principales: Brunbauer, F M, Galgóczi, G, Gonzalez Diaz, D, Oliveri, E, Resnati, F, Ropelewski, L, Streli, C, Thuiner, P, van Stenis, M
Lenguaje:eng
Publicado: 2018
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.nima.2017.12.077
http://cds.cern.ch/record/2301232
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author Brunbauer, F M
Galgóczi, G
Gonzalez Diaz, D
Oliveri, E
Resnati, F
Ropelewski, L
Streli, C
Thuiner, P
van Stenis, M
author_facet Brunbauer, F M
Galgóczi, G
Gonzalez Diaz, D
Oliveri, E
Resnati, F
Ropelewski, L
Streli, C
Thuiner, P
van Stenis, M
author_sort Brunbauer, F M
collection CERN
description Combining strong signal amplification made possible by Gaseous Electron Multipliers (GEMs) with the high spatial resolution provided by optical readout, highly performing radiation detectors can be realized. An optically read out GEM-based Time Projection Chamber (TPC) is presented. The device permits 3D track reconstruction by combining the 2D projections obtained with a CCD camera with timing information from a photomultiplier tube. Owing to the intuitive 2D representation of the tracks in the images and to automated control, data acquisition and event reconstruction algorithms, the optically read out TPC permits live display of reconstructed tracks in three dimensions. An Ar/CF 4 (80/20%) gas mixture was used to maximize scintillation yield in the visible wavelength region matching the quantum efficiency of the camera. The device is integrated in a UHV-grade vessel allowing for precise control of the gas composition and purity. Long term studies in sealed mode operation revealed a minor decrease in the scintillation light intensity.
id oai-inspirehep.net-1647034
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2018
record_format invenio
spelling oai-inspirehep.net-16470342022-08-10T12:29:26Zdoi:10.1016/j.nima.2017.12.077http://cds.cern.ch/record/2301232engBrunbauer, F MGalgóczi, GGonzalez Diaz, DOliveri, EResnati, FRopelewski, LStreli, CThuiner, Pvan Stenis, MLive event reconstruction in an optically read out GEM-based TPCDetectors and Experimental TechniquesCombining strong signal amplification made possible by Gaseous Electron Multipliers (GEMs) with the high spatial resolution provided by optical readout, highly performing radiation detectors can be realized. An optically read out GEM-based Time Projection Chamber (TPC) is presented. The device permits 3D track reconstruction by combining the 2D projections obtained with a CCD camera with timing information from a photomultiplier tube. Owing to the intuitive 2D representation of the tracks in the images and to automated control, data acquisition and event reconstruction algorithms, the optically read out TPC permits live display of reconstructed tracks in three dimensions. An Ar/CF 4 (80/20%) gas mixture was used to maximize scintillation yield in the visible wavelength region matching the quantum efficiency of the camera. The device is integrated in a UHV-grade vessel allowing for precise control of the gas composition and purity. Long term studies in sealed mode operation revealed a minor decrease in the scintillation light intensity.oai:inspirehep.net:16470342018
spellingShingle Detectors and Experimental Techniques
Brunbauer, F M
Galgóczi, G
Gonzalez Diaz, D
Oliveri, E
Resnati, F
Ropelewski, L
Streli, C
Thuiner, P
van Stenis, M
Live event reconstruction in an optically read out GEM-based TPC
title Live event reconstruction in an optically read out GEM-based TPC
title_full Live event reconstruction in an optically read out GEM-based TPC
title_fullStr Live event reconstruction in an optically read out GEM-based TPC
title_full_unstemmed Live event reconstruction in an optically read out GEM-based TPC
title_short Live event reconstruction in an optically read out GEM-based TPC
title_sort live event reconstruction in an optically read out gem-based tpc
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.1016/j.nima.2017.12.077
http://cds.cern.ch/record/2301232
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