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

fYear

1999

fDate

1999

Firstpage

19

Lastpage

23

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Real Time Conference, 1999. Santa Fe 1999. 11th IEEE NPSS

Conference_Location

Sante Fe, NM

Print_ISBN

0-7803-5463-X

Type

conf

DOI

10.1109/RTCON.1999.842555

Filename

842555