A high resolution fast-RICH counter for on-line tagging of high energy particles

The design and performances of a new Cherenkov counter for on-line tagging of high energy particles are reported. The counter is equipped with a 6 m focal length spherical mirror and a chromatic corrector. The Cherenkov ring size is reduced by means of a set of two conical mirrors to match the activ...

Descripción completa

Detalles Bibliográficos
Autores principales: Ballon, J, Bérat, C, Buénerd, M, Chauvin, J, Hostachy, J Y, Laâmyem, M, Martin, P, Epherre-Rey-Campagnolle, Marcelle, Touillon, R, Volkemer, B
Lenguaje:eng
Publicado: 1993
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/248089
_version_ 1780885382242500608
author Ballon, J
Bérat, C
Buénerd, M
Chauvin, J
Hostachy, J Y
Laâmyem, M
Martin, P
Epherre-Rey-Campagnolle, Marcelle
Touillon, R
Volkemer, B
author_facet Ballon, J
Bérat, C
Buénerd, M
Chauvin, J
Hostachy, J Y
Laâmyem, M
Martin, P
Epherre-Rey-Campagnolle, Marcelle
Touillon, R
Volkemer, B
author_sort Ballon, J
collection CERN
description The design and performances of a new Cherenkov counter for on-line tagging of high energy particles are reported. The counter is equipped with a 6 m focal length spherical mirror and a chromatic corrector. The Cherenkov ring size is reduced by means of a set of two conical mirrors to match the active area of an image intensifier which output is read by a matrix of optical fibres partitioned in pixel, each pixels being coupled to a photomultiplier. Results of tests with π (plus K and p ) beams are reported and performances of the apparatus are discussed. A spatial resolution of 0.125 mm (20.6 μrad angular) on the Cherenkov radius measurement has been obtained with a 50 μrad divergence 220 GeV pion beam, outlining encouraging prospects for a separation of 270 GeV Σ − and Ξ − hyperons at the 5σ level.
id cern-248089
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1993
record_format invenio
spelling cern-2480892019-09-30T06:29:59Zhttp://cds.cern.ch/record/248089engBallon, JBérat, CBuénerd, MChauvin, JHostachy, J YLaâmyem, MMartin, PEpherre-Rey-Campagnolle, MarcelleTouillon, RVolkemer, BA high resolution fast-RICH counter for on-line tagging of high energy particlesDetectors and Experimental TechniquesThe design and performances of a new Cherenkov counter for on-line tagging of high energy particles are reported. The counter is equipped with a 6 m focal length spherical mirror and a chromatic corrector. The Cherenkov ring size is reduced by means of a set of two conical mirrors to match the active area of an image intensifier which output is read by a matrix of optical fibres partitioned in pixel, each pixels being coupled to a photomultiplier. Results of tests with π (plus K and p ) beams are reported and performances of the apparatus are discussed. A spatial resolution of 0.125 mm (20.6 μrad angular) on the Cherenkov radius measurement has been obtained with a 50 μrad divergence 220 GeV pion beam, outlining encouraging prospects for a separation of 270 GeV Σ − and Ξ − hyperons at the 5σ level.ISN-93-11oai:cds.cern.ch:2480891993-01-26
spellingShingle Detectors and Experimental Techniques
Ballon, J
Bérat, C
Buénerd, M
Chauvin, J
Hostachy, J Y
Laâmyem, M
Martin, P
Epherre-Rey-Campagnolle, Marcelle
Touillon, R
Volkemer, B
A high resolution fast-RICH counter for on-line tagging of high energy particles
title A high resolution fast-RICH counter for on-line tagging of high energy particles
title_full A high resolution fast-RICH counter for on-line tagging of high energy particles
title_fullStr A high resolution fast-RICH counter for on-line tagging of high energy particles
title_full_unstemmed A high resolution fast-RICH counter for on-line tagging of high energy particles
title_short A high resolution fast-RICH counter for on-line tagging of high energy particles
title_sort high resolution fast-rich counter for on-line tagging of high energy particles
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/248089
work_keys_str_mv AT ballonj ahighresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT beratc ahighresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT buenerdm ahighresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT chauvinj ahighresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT hostachyjy ahighresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT laamyemm ahighresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT martinp ahighresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT epherrereycampagnollemarcelle ahighresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT touillonr ahighresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT volkemerb ahighresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT ballonj highresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT beratc highresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT buenerdm highresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT chauvinj highresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT hostachyjy highresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT laamyemm highresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT martinp highresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT epherrereycampagnollemarcelle highresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT touillonr highresolutionfastrichcounterforonlinetaggingofhighenergyparticles
AT volkemerb highresolutionfastrichcounterforonlinetaggingofhighenergyparticles

Ejemplares similares