On-line use of the 168/E emulator at the CERN ISR SFM detector

The Split Field Magnet Detector at the CERN ISR has been used to study events with a high transverse momentum charged particle. As a first- level computer-based trigger, a linear estimate of the track momentum by fixed point arithmetic was calculated on-line using a minicomputer. Appreciable further...

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Detalles Bibliográficos
Autores principales: Bertuzzi, C, Drijard, Daniel, Frehse, H, Gavillet, P, Gokieli, R, Innocenti, Pier Giorgio, Messerli, R, Mornacchi, G, Norton, A, Porte, J P
Lenguaje:eng
Publicado: CERN 1981
Materias:
Nuclear Physics
Acceso en línea:https://dx.doi.org/10.5170/CERN-1981-007.329
http://cds.cern.ch/record/862913
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author Bertuzzi, C
Drijard, Daniel
Frehse, H
Gavillet, P
Gokieli, R
Innocenti, Pier Giorgio
Messerli, R
Mornacchi, G
Norton, A
Porte, J P
author_facet Bertuzzi, C
Drijard, Daniel
Frehse, H
Gavillet, P
Gokieli, R
Innocenti, Pier Giorgio
Messerli, R
Mornacchi, G
Norton, A
Porte, J P
author_sort Bertuzzi, C
collection CERN
description The Split Field Magnet Detector at the CERN ISR has been used to study events with a high transverse momentum charged particle. As a first- level computer-based trigger, a linear estimate of the track momentum by fixed point arithmetic was calculated on-line using a minicomputer. Appreciable further rejection was obtained by off-line filtering on an IBM-370/168, using pattern recognition and a fit of the triggering particle in the magnetic field. The availability of the 168/E emulator makes it possible to transfer the proven methods, used off-line, to real time data reduction. Preliminary results of filter efficiency and speed for an experiment triggering on a high P/sub T/ hadron at 10 to 20 degrees with respect to the outgoing beam are given. Possible improvements and extensions are discussed. (9 refs).
id cern-862913
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1981
publisher CERN
record_format invenio
spelling cern-8629132019-09-30T06:29:59Zdoi:10.5170/CERN-1981-007.329http://cds.cern.ch/record/862913engBertuzzi, CDrijard, DanielFrehse, HGavillet, PGokieli, RInnocenti, Pier GiorgioMesserli, RMornacchi, GNorton, APorte, J POn-line use of the 168/E emulator at the CERN ISR SFM detectorNuclear PhysicsThe Split Field Magnet Detector at the CERN ISR has been used to study events with a high transverse momentum charged particle. As a first- level computer-based trigger, a linear estimate of the track momentum by fixed point arithmetic was calculated on-line using a minicomputer. Appreciable further rejection was obtained by off-line filtering on an IBM-370/168, using pattern recognition and a fit of the triggering particle in the magnetic field. The availability of the 168/E emulator makes it possible to transfer the proven methods, used off-line, to real time data reduction. Preliminary results of filter efficiency and speed for an experiment triggering on a high P/sub T/ hadron at 10 to 20 degrees with respect to the outgoing beam are given. Possible improvements and extensions are discussed. (9 refs).CERNoai:cds.cern.ch:8629131981
spellingShingle Nuclear Physics
Bertuzzi, C
Drijard, Daniel
Frehse, H
Gavillet, P
Gokieli, R
Innocenti, Pier Giorgio
Messerli, R
Mornacchi, G
Norton, A
Porte, J P
On-line use of the 168/E emulator at the CERN ISR SFM detector
title On-line use of the 168/E emulator at the CERN ISR SFM detector
title_full On-line use of the 168/E emulator at the CERN ISR SFM detector
title_fullStr On-line use of the 168/E emulator at the CERN ISR SFM detector
title_full_unstemmed On-line use of the 168/E emulator at the CERN ISR SFM detector
title_short On-line use of the 168/E emulator at the CERN ISR SFM detector
title_sort on-line use of the 168/e emulator at the cern isr sfm detector
topic Nuclear Physics
url https://dx.doi.org/10.5170/CERN-1981-007.329
http://cds.cern.ch/record/862913
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