The trigger system of the NOMAD experiment

The NOMAD trigger system is described in the present paper. It is made up of a largearea plastic scintillator veto system, two trigger scintillator planes inside a 0.4~Tmagnetic field and their associated trigger electronics. Special features of the systemconsist of the use of proximity mesh photomu...

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Detalles Bibliográficos
Autores principales: Altegoer, J, Andrle, J, Boyd, S, Cardini, A, Farthouat, Philippe, Ferrari, R, Geppert, D, Gössling, C, Huta, W, Hyett, N, Koch, N, Lanza, A, Long, J, Moorhead, G F, Poolmann, D, Poulsen, C, Rubbia, André, Schmidt, B, Soler, F J P, Steele, D, Varvell, K E, Weisse, T, Winton, L J, Yabsley, B D, Voullieme, A
Lenguaje:eng
Publicado: 1998
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.1016/S0168-9002(99)00176-X
http://cds.cern.ch/record/377620
Descripción
Sumario:The NOMAD trigger system is described in the present paper. It is made up of a largearea plastic scintillator veto system, two trigger scintillator planes inside a 0.4~Tmagnetic field and their associated trigger electronics. Special features of the systemconsist of the use of proximity mesh photomultipliers which allow the trigger scintillators to operate in the magnetic field, and the use of custom-built VME moduleswhich perform the trigger logic decisions, the signal synchronisation and gate generation,event counting and livetime calculations. This paper also includes a description of each of the NOMAD triggers, with their calculated and measured rates, efficiencies and livetimes.

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