The Ring Imaging Cherenkov detector of the AMS experiment: test beam results with a prototype

The Alpha Magnetic Spectrometer (AMS) to be installed on the International Space Station (ISS) will be equipped with a proximity Ring Imaging Cherenkov (RICH) detector for measuring the velocity and electric charge of the charged cosmic particles. This detector will contribute to the high level of r...

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Detalles Bibliográficos
Autores principales: Arruda, Luisa, Barao, Fernando, Goncalves, Patricia, Pereira, Rui
Lenguaje:eng
Publicado: 2008
Materias:
astro-ph
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysbps.2007.07.025
http://cds.cern.ch/record/1083347
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author Arruda, Luisa
Barao, Fernando
Goncalves, Patricia
Pereira, Rui
author_facet Arruda, Luisa
Barao, Fernando
Goncalves, Patricia
Pereira, Rui
author_sort Arruda, Luisa
collection CERN
description The Alpha Magnetic Spectrometer (AMS) to be installed on the International Space Station (ISS) will be equipped with a proximity Ring Imaging Cherenkov (RICH) detector for measuring the velocity and electric charge of the charged cosmic particles. This detector will contribute to the high level of redundancy required for AMS as well as to the rejection of albedo particles. Charge separation up to iron and a velocity resolution of the order of 0.1% for singly charged particles are expected. A RICH protoptype consisting of a detection matrix with 96 photomultiplier units, a segment of a conical mirror and samples of the radiator materials was built and its performance was evaluated. Results from the last test beam performed with ion fragments resulting from the collision of a 158 GeV/c/nucleon primary beam of indium ions (CERN SPS) on a lead target are reported. The large amount of collected data allowed to test and characterize different aerogel samples and the sodium fluoride radiator. In addition, the reflectivity of the mirror was evaluated. The data analysis confirms the design goals.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2008
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spelling cern-10833472019-09-30T06:29:59Zdoi:10.1016/j.nuclphysbps.2007.07.025http://cds.cern.ch/record/1083347engArruda, LuisaBarao, FernandoGoncalves, PatriciaPereira, RuiThe Ring Imaging Cherenkov detector of the AMS experiment: test beam results with a prototypeastro-phThe Alpha Magnetic Spectrometer (AMS) to be installed on the International Space Station (ISS) will be equipped with a proximity Ring Imaging Cherenkov (RICH) detector for measuring the velocity and electric charge of the charged cosmic particles. This detector will contribute to the high level of redundancy required for AMS as well as to the rejection of albedo particles. Charge separation up to iron and a velocity resolution of the order of 0.1% for singly charged particles are expected. A RICH protoptype consisting of a detection matrix with 96 photomultiplier units, a segment of a conical mirror and samples of the radiator materials was built and its performance was evaluated. Results from the last test beam performed with ion fragments resulting from the collision of a 158 GeV/c/nucleon primary beam of indium ions (CERN SPS) on a lead target are reported. The large amount of collected data allowed to test and characterize different aerogel samples and the sodium fluoride radiator. In addition, the reflectivity of the mirror was evaluated. The data analysis confirms the design goals.arXiv:0801.4484oai:cds.cern.ch:10833472008-01-30
spellingShingle astro-ph
Arruda, Luisa
Barao, Fernando
Goncalves, Patricia
Pereira, Rui
The Ring Imaging Cherenkov detector of the AMS experiment: test beam results with a prototype
title The Ring Imaging Cherenkov detector of the AMS experiment: test beam results with a prototype
title_full The Ring Imaging Cherenkov detector of the AMS experiment: test beam results with a prototype
title_fullStr The Ring Imaging Cherenkov detector of the AMS experiment: test beam results with a prototype
title_full_unstemmed The Ring Imaging Cherenkov detector of the AMS experiment: test beam results with a prototype
title_short The Ring Imaging Cherenkov detector of the AMS experiment: test beam results with a prototype
title_sort ring imaging cherenkov detector of the ams experiment: test beam results with a prototype
topic astro-ph
url https://dx.doi.org/10.1016/j.nuclphysbps.2007.07.025
http://cds.cern.ch/record/1083347
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