Title :
Switchless event building farm for the belle data acquisition system
Author :
Nakao, M. ; Itoh, R. ; Suzuki, S.Y. ; Yamauchi, M. ; Won, E. ; Kim, H.J. ; Roh, S.-H. ; Kim, H.-W. ; Kim, H.J. ; Yanaka, S.
Author_Institution :
High Energy Accelerator Res. Organ., Tsukuba, Japan
Abstract :
We designed a switchless event building farm for the Belle experiment at the KEKB e/sup +/e/sup -/ collider, as a replacement of the existing event builder and the online farm systems. In the new system, PCs are directly interconnected with multiple point-to-point Fast and Gigabit Ethernet connections. The PCs build the detector data in two steps to perform distributed event processing. We set up a test system and confirmed the event building performance meets our new requirements using a realistic prototype software. The system is being installed as scheduled using the summer shutdown time in 2001.
Keywords :
Cherenkov counters; drift chambers; high energy physics instrumentation computing; local area networks; silicon radiation detectors; Belle data acquisition system; distributed event processing; event building performance; event filtering; prototype software; switchless event building farm; Buildings; Data acquisition; Detectors; Ethernet networks; Event detection; Personal communication networks; Software performance; Software prototyping; Software testing; System testing;
Journal_Title :
Nuclear Science, IEEE Transactions on
