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
Descripción
Sumario: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).

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