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 the SVD trigger is evaluated with collision data.
Original language | English (US) |
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Article number | N33-116 |
Pages (from-to) | 1716-1720 |
Number of pages | 5 |
Journal | IEEE Nuclear Science Symposium Conference Record |
Volume | 3 |
State | Published - 2004 |
Event | 2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors - Rome, Italy Duration: Oct 16 2004 → Oct 22 2004 |
All Science Journal Classification (ASJC) codes
- Radiation
- Nuclear and High Energy Physics
- Radiology Nuclear Medicine and imaging
Keywords
- Belle
- KEKB
- Silicon vertex detector
- Trigger
- VA1TA