Fast programmable trigger for isolated cluster counting in the BELLE experiment

H. J. Kim, S. K. Kim, S. H. Lee, T. W. Hur, C. H. Kim, F. Wang, I. C. Park, Hee Jong Kim, B. G. Cheon, E. Won

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


We have developed a fast programmable trigger processor board based on a field programmable gate array and a complex programmable logic device for use in the BELLE experiment. The trigger board accommodates 144 ECL input signals, 2 NIM input signals, 24 ECL output signals, and the VME bus specification. An asynchronous trigger logic for counting isolated clusters is used. We have obtained a trigger latency of 50 ns with full access to input and output signals via a VME interface. The trigger logic can be modified at any time depending on the experimental conditions.

Original languageEnglish
Pages (from-to)634-639
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number3
Publication statusPublished - 2001 Jan 21
Externally publishedYes

Bibliographical note

Funding Information:
We would like to thank the BELLE group for their installation and maintenance of the detector, and acknowledge support from KOSEF and the Ministry of Education (through BSRI) in Korea.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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