Title :
The data acquisition system for the OBELIX central detector
Author :
Filippini, V. ; Liu, T.F. ; Maron, G. ; Masoni, A. ; Vedovato, G.
Author_Institution :
INFN Sezione di Pavia, Italy
fDate :
4/1/1991 12:00:00 AM
Abstract :
The data acquisition system developed for the central detector of the OBELIX experiment at the Low Energy Antiproton Ring (LEAR) at CERN is described.. The system is based on a VME multiprocessor that formats, collects, and makes a rough online analysis of the events digitized by high-speed (100-MHz) flash-ADCs (analog-to-digital converters). Full online event reconstruction is also provided. The system is in routine operation. The event rate ranges from 20 events/s when the event size is ~80 kB (all wires and strip hit) to 110 events/s when the event size is ~2 kB (two wires and two strips hit). The maximum rate foreseen for the experiment is ~50 events/s
Keywords :
data acquisition; position sensitive particle detectors; 100 MHz; OBELIX central detector; VME multiprocessor; data acquisition system; flash-ADCs; Anodes; Atomic measurements; Cathodes; Data acquisition; Hydrogen; Magnetic field measurement; Spirals; Strips; X-ray detection; X-ray detectors;
Journal_Title :
Nuclear Science, IEEE Transactions on
