Online Integration Outline for May 2008

• Overview of online systems
  • scope of online effort
  • trigger and data rates
• Software foundations
  • cMsg pub/sub interprocess communication system
  • ET system
• Trigger/DAQ
  • overall trigger
  • adapting CODA toolkit to Hall D
  • implementation plans for low luminosity prototype farm
  • event transfer to silo
  • scaling to high luminosity and full L3 farm
• Controls
  • slow controls
    • architecture - 3-tier, functional view vs implementation view
    • strategy - control loops, PLC usage, CAN, I2C, SNMP, OPC, etc.
    • component choices (tentative)
    • interoperability with accelerator control system
  • experiment controls
    • run control using AFECS, inclusion of non-CODA components
    • generic high-level state machines
• Monitoring
  • detector
    • via slow controls system
    • via data stream when running
  • event data quality - via (prototype) farm
  • archive/display system - MonAlisa, other possibilities
  • event display
• Alarm system
  • design goals
  • epics, LASER, cMsg/CLAS, A-B, others
• Misc
  • networking
  • databases - MySQL or PostgeSQL
  • run and shift bookkeeping
  • e-log - CLAS, CRL or other public domain, write one yet again, etc.