Belle-II high level trigger at SuperKEKB

S. Lee, R. Itoh, T. Higuchi, M. Nakao, S. Y. Suzuki, Eunil Won

Research output: Contribution to journalArticle


A next generation B-factory experiment, Belle II, is now being constructed at KEK in Japan. The upgraded accelerator SuperKEKB is designed to have the maximum luminosity of 8 × 1035 cm-2s-1 that is a factor 40 higher than the current world record. As a consequence, the Belle II detector yields a data stream of the event size ∼1 MB at a Level 1 rate of 30 kHz. The Belle II High Level Trigger (HLT) is designed to reduce the Level 1 rate to 1/5 by performing the real time full event reconstruction and by applying the physics level event selection as the software trigger. In this paper, the development of the high level trigger system for Belle II and its performance is discussed.

Original languageEnglish
Article number012029
JournalJournal of Physics: Conference Series
Issue numberPART 1
Publication statusPublished - 2012 Dec 1


ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Lee, S., Itoh, R., Higuchi, T., Nakao, M., Suzuki, S. Y., & Won, E. (2012). Belle-II high level trigger at SuperKEKB. Journal of Physics: Conference Series, 396(PART 1), [012029].