OWG Meeting 27-Apr-2011

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Agenda

  • Announcements
  • Review of minutes from 13-Apr-2011 meeting
  • Collaboration meeting agenda
  • Plan Monitoring Histograms - Dave
  • DAQ Group code distribution - Carl, Graham, Dave
  • Controls projects and test station - Hovanes, Elliott
    • How might we use PC104's?
    • Harp scanner requirements
    • CAN control status, ASYN framework
    • Gas system requirements
    • Target requirements
    • Digital input sequencing module (1756-IB16ISOE)
    • HV, LV and crate control
    • Labview and EPICS
    • Control System Studio, archiver, alarm system, backup/restore
    • Visual DCT
    • EPICS on the web
  • P3E Online tasks, DAQ group and open position - Graham, Elliott
  • Update on conditions database - Mark
  • Coil test update - Elliott, Yi
    • VME fast DAQ system
    • Auxiliary tests
  • Other hardware tests - Chris, Beni
    • Multi-crate trigger test
    • FDC cosmic ray test
  • Raw event format - Dave, Carl
  • Event display - Elliott, Andrew
  • Java coda object framework - Elliott
  • Electronics, trigger and DAQ status reports - Chris, Alex, Dave, Fernando, Ben, Ed, William, Bryan
  • Mantis Task Tracker


Time/Location

1:30 PM Wed 27-Apr-2011 CC F326


Announcements

Next Meeting

1:30 PM Wed 25-May-2011 CC F326

Skipping a meeting due to collaboration meeting


Minutes

Present: Simon T, Carl T, Bryan M, Hovanes E, Eugene C, Beni Z, Alex S, Dave L, Mark I, Yi Q


Announcements

  • First Controls group meeting held, see controls wiki page for details, agendas, etc.
  • Collaboration meeting agenda discussed.


Plan Monitoring Histograms

Dave reported on a first draft of the planning document for line item "Plan Monitoring Histograms." Scope includes the farm processes that create the histograms through archive and display. Initial efforts concern counting house operations, but display outside the counting house included. RootSpy forms the core of the histogram collection and display system. Farm manager CODA component critical to manage histogram producers. Dave will post the draft to the DocDB soon.


DAQ Group Code Distribution

Brief discussion concerning code DAQ Group code distribition system, felt to be inadequate for use by offsite collaborators. DAQ group now supplies code to offline groups, a change from the past 15 years, where code was mostly distributed to the online systems of the three halls. Carl reported that this will be addressed in an upcoming DAQ Group meeting and an appropriate system deployed.

A side discussion concerned the use of EVIO for other than DAQ output in Hall D. EVIO is a low overhead, general purpose tree-structured binary I/O package, appropriate for many tasks other than event I/O. Simon used it to store the fine-grained B field table. It only took a handful of simple and straightforward lines of code to implement storage of the B field values. It is much simple to use EVIO than to invent your own I/O format, even for simple cases.


Controls Tasks