Title :
Data acquisition system for the Belle experiment
Author :
Nakao, M. ; Yamauchi, M. ; Suzuki, S.Y. ; Itoh, R. ; Fujii, H.
Author_Institution :
Nat. High Energy Accel. Res. Organ., Ibaraki, Japan
Abstract :
We built a data acquisition system for the Belle experiment at the KEK B-factory. The system is designed to record the signals from the detectors at 500 Hz trigger rate with a less than 10% dead time fraction. A typical event size is 30 kbyte, which corresponds to a data transfer rate of 15 Mbyte/s. The main components are two kinds of detector readout systems, an event builder, an online computer farm and a data storage system. The system has been reliably in operation at the design performance for a half year. We have completed cosmic-ray data taking for 2.5 months and started physics data taking on Jun. 1, 1999
Keywords :
data acquisition; high energy physics instrumentation computing; nuclear electronics; readout electronics; 15 MByte/s; Belle experiment; cosmic ray; data acquisition system; data storage; dead time fraction; event builder; online computer farm; readout systems; Control systems; Counting circuits; Data acquisition; Data storage systems; Detectors; Physics; Production; Strips; Time division multiplexing; Timing;
Conference_Titel :
Real Time Conference, 1999. Santa Fe 1999. 11th IEEE NPSS
Conference_Location :
Sante Fe, NM
Print_ISBN :
0-7803-5463-X
DOI :
10.1109/RTCON.1999.842555
