WBS 1.3.8

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Trigger and DAQ

• WBS 1.3.8
• Subsystem Manager Krishna Kumar
• Participating Institutions
• Boston University, University of Massachusetts
• RSVP LOC Review
• January 19, 2005

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Overview

• DAQ scope
• Digitize hits and form pipeline
• Generate level-1 trigger
• Build events and load to processor farm
• Generate level-3 software trigger
• Define physics data sets and write to permanent
  storage
• Separate system for slow control and monitoring
• Level-1 Trigger
• DIO electrons prescaled calibration triggers
• Few µs for decision based on trigger sums
• 1-2 kHz trigger rate 1 Gb/s into event builder
• Event Builder
• Digitized data from all subsystems
• Processor Farm
• Simple algorithms based on tracker information
• 10 to 100 Hz to storage

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DAQ Schematic
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DAQ Status

• Cost Estimate
• Current estimate 2.47M (3.38M)
• Confidence level mostly engineering concept
  technology generally exists
• Scrubbing just begun
• Hardware
• Pre-conceptual design of calorimeter digitization
  and trigger processor just begun
• Trigger and data rate estimates to be refined
• Reference design document preparation to begin
• Software
• Simulation of trigger algorithms to begin soon
• Reconstruction software awaits funding
• Slow control and Monitoring
• Manpower to be defined
• Will copy successful existing systems

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