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Detector Data Acquisition System
Each PMT signal is pre-amplified and integrated.
PMT integrated charge (Q) and time (T) are digitized every 100ns ...info kept for 205ms (about 10x longer than needed) in a circular buffer for each channel.
The trigger captures a time window (stored in the circular buffer) of Q & T data based on:
- External input pulses: "protons to MiniBooNE," calibration, strobe signals
- Detector info: A few Nhit thresholds for Main & Veto
PMT & Trigger data from VME crates are collated, monitored, and shipped.
Other data streams: beam, horn, off-axis muon detector (LMC), beam pulse digitizer, slow monitoring.