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Performance of Large Area Micromegas Detectors for the ATLAS Muon Spectrometer Upgrade Project
Four German institutes are building the 32 high-rate capable SM2 Micromegas quadruplets, for the upgrade of the Small Wheels of the ATLAS muon spectrometer. The cathodes and strip-anodes of the m$^2$ in size quadruplets consist of stable honeycomb sandwiches with a requested planarity better than 80...
Autores principales: | , , , , , , |
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Lenguaje: | eng |
Publicado: |
2016
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Materias: | |
Acceso en línea: | http://cds.cern.ch/record/2120831 |
_version_ | 1780949347358212096 |
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author | Losel, Philipp Jonathan Biebel, Otmar Hertenberger, Ralf Mueller, Ralph Soeren Peter Bortfeldt, Jonathan Flierl, Bernhard Matthias Zibell, Andre |
author_facet | Losel, Philipp Jonathan Biebel, Otmar Hertenberger, Ralf Mueller, Ralph Soeren Peter Bortfeldt, Jonathan Flierl, Bernhard Matthias Zibell, Andre |
author_sort | Losel, Philipp Jonathan |
collection | CERN |
description | Four German institutes are building the 32 high-rate capable SM2 Micromegas quadruplets, for the upgrade of the Small Wheels of the ATLAS muon spectrometer. The cathodes and strip-anodes of the m$^2$ in size quadruplets consist of stable honeycomb sandwiches with a requested planarity better than 80 $\mu$m. The qualification of a full-size SM2 quadruplet, foreseen by ATLAS time schedule for August 2015, will be performed in the Munich Cosmic Ray Measurement Facility (CRMF). Two fully working 4 m$\times$ 2.2 m ATLAS drift-tube chambers provide muon tracking, a RD51 SRS based data acquisition system provides readout of all 12288 electronic channels using 96 APV25 frontend boards. We report on homogeneity of pulse-height and efficiency and will present measurements of the planarity of the sandwich planes and the positions of the readout-strips. This has been pioneered by studying a $102 \times 92$ cm$^2$ Micromegas chamber with similar readout pitch in the CRMF using the TPC-like analysis method. At trigger rates above 100 Hz data taking takes only a few days for sufficient statistics. Shifts of readout planes and buldging due to overpressure were resolved with an accuracy better 50 $\mu$m, single plane angular resolution with an accuracy of about 5 $^\circ$ and spatial resolution of 300 $\mu$m in agreement with 83 $\mu$m for the same detector at high energy 120 GeV pion beams taking into account the multiple scattering of the 2 GeV cosmic muons. |
id | cern-2120831 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2016 |
record_format | invenio |
spelling | cern-21208312019-09-30T06:29:59Zhttp://cds.cern.ch/record/2120831engLosel, Philipp JonathanBiebel, OtmarHertenberger, RalfMueller, Ralph Soeren PeterBortfeldt, JonathanFlierl, Bernhard MatthiasZibell, AndrePerformance of Large Area Micromegas Detectors for the ATLAS Muon Spectrometer Upgrade ProjectParticle Physics - ExperimentFour German institutes are building the 32 high-rate capable SM2 Micromegas quadruplets, for the upgrade of the Small Wheels of the ATLAS muon spectrometer. The cathodes and strip-anodes of the m$^2$ in size quadruplets consist of stable honeycomb sandwiches with a requested planarity better than 80 $\mu$m. The qualification of a full-size SM2 quadruplet, foreseen by ATLAS time schedule for August 2015, will be performed in the Munich Cosmic Ray Measurement Facility (CRMF). Two fully working 4 m$\times$ 2.2 m ATLAS drift-tube chambers provide muon tracking, a RD51 SRS based data acquisition system provides readout of all 12288 electronic channels using 96 APV25 frontend boards. We report on homogeneity of pulse-height and efficiency and will present measurements of the planarity of the sandwich planes and the positions of the readout-strips. This has been pioneered by studying a $102 \times 92$ cm$^2$ Micromegas chamber with similar readout pitch in the CRMF using the TPC-like analysis method. At trigger rates above 100 Hz data taking takes only a few days for sufficient statistics. Shifts of readout planes and buldging due to overpressure were resolved with an accuracy better 50 $\mu$m, single plane angular resolution with an accuracy of about 5 $^\circ$ and spatial resolution of 300 $\mu$m in agreement with 83 $\mu$m for the same detector at high energy 120 GeV pion beams taking into account the multiple scattering of the 2 GeV cosmic muons.ATL-MUON-SLIDE-2016-014oai:cds.cern.ch:21208312016-01-13 |
spellingShingle | Particle Physics - Experiment Losel, Philipp Jonathan Biebel, Otmar Hertenberger, Ralf Mueller, Ralph Soeren Peter Bortfeldt, Jonathan Flierl, Bernhard Matthias Zibell, Andre Performance of Large Area Micromegas Detectors for the ATLAS Muon Spectrometer Upgrade Project |
title | Performance of Large Area Micromegas Detectors for the ATLAS Muon Spectrometer Upgrade Project |
title_full | Performance of Large Area Micromegas Detectors for the ATLAS Muon Spectrometer Upgrade Project |
title_fullStr | Performance of Large Area Micromegas Detectors for the ATLAS Muon Spectrometer Upgrade Project |
title_full_unstemmed | Performance of Large Area Micromegas Detectors for the ATLAS Muon Spectrometer Upgrade Project |
title_short | Performance of Large Area Micromegas Detectors for the ATLAS Muon Spectrometer Upgrade Project |
title_sort | performance of large area micromegas detectors for the atlas muon spectrometer upgrade project |
topic | Particle Physics - Experiment |
url | http://cds.cern.ch/record/2120831 |
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