Switchless event building farm for the Belle data acquisition system

M. Nakao, R. Itoh, S. Y. Suzuki, M. Yamauchi, E. Won, H. J. Kim, S. H. Roh, H. W. Kim, H. O. Kim, S. Yanaka

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


We designed a switchless event building farm for the Belle experiment at the KEKB e+e- 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.

Original languageEnglish
Pages (from-to)2385-2390
Number of pages6
JournalIEEE Transactions on Nuclear Science
Issue number6 II
Publication statusPublished - 2001 Dec
Externally publishedYes
Event2001 Nuclear Science Symposium (NSS) - Lyon, France
Duration: 2000 Oct 152000 Oct 20


  • Data acquisition
  • Data transfer
  • Event building
  • Event filtering

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering


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