Trigger and data acquisition system for the N-N experiment

The trigger and data acquisition system for the N-N experiment at the Institute Laue-Langevin at Grenoble is described along with CAMAC modules especially designed for this experiment. The trigger system is organized around three logical levels; it works in the presence of a high level of beam-induc...

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Veröffentlicht in:IEEE transactions on nuclear science 1991-04, Vol.38 (2), p.471-475
Hauptverfasser: Baldo-Ceolin, M., Benetti, P., Bobisut, F., Bonaiti, V., Calligarich, E., Cavestro, A., Dolfini, R., Genoni, M., Gibin, D., Berzolari, A.G., Guglielmi, A., Mattioli, F., Mauri, F., Mezzetto, M., Piazzoli, A., Puglierin, G., Rappoldi, A., Raselli, G.L., Scannicchio, D., Schiavon, P.G., Sconza, A., Vascon, M., Visentin, L.
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Sprache:eng
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Zusammenfassung:The trigger and data acquisition system for the N-N experiment at the Institute Laue-Langevin at Grenoble is described along with CAMAC modules especially designed for this experiment. The trigger system is organized around three logical levels; it works in the presence of a high level of beam-induced noise, without beam pulse synchronization, looking for a very rare signal. The final trigger rate is 4 Hz, not very different from the beam off rate, while the trigger efficiency for the antineutron annihilation detection is >0.7. The data acquisition is based on a MicroVAX II computer, in a cluster with four VaxStations, interfaces to CAMAC, and uses a modified version of the DAQP software developed at CERN. The system, has been working for a year with high efficiency and reliability.< >
ISSN:0018-9499
1558-1578
DOI:10.1109/23.289341