Conference Proceedings

Level-1 silicon vertex detector trigger at Belle

S Vahsen, M Barbero, T Browder, M Rosen, K Trabelsi, K Uchida, G Varner, S Okuno, P Kapusta, T Lesiak, Z Natkaniec, W Ostrowicz, M Rozanska, S Fratina, S Korpar, P Križan, D Žontar, J Dalseno, R Dowd, GR Moloney Show all

IEEE Nuclear Science Symposium Conference Record | Published : 2004

DOI: 10.1109/NSSMIC.2004.1462572

Abstract

We present a newly developed fast trigger system that uses the silicon vertex detector (SVD) for the Belle experiment at the KEKB energy-asymmetric e+e- collider. It is designed to issue the trigger with a latency of 1.85 μs for the Belle central trigger system (GDL). The primary purpose of the SVD trigger is to reduce beam-induced background events by requiring tracks that come from the interaction point. The system receives trigger signals from VA1TA front-end integrated circuits, which read out signals on the silicon-strips. SVD tracks are constructed with them in combination with the trigger information of the Central Drift Chamber (CDC), which is located outside the SVD. Performance of ..

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University of Melbourne Researchers

Keywords

5106 Nuclear and Plasma Physics
5110 Synchrotrons and Accelerators
51 Physical Sciences