OWG Meeting 14-Sep-2011

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Agenda

  • Announcements
    • getting 18 more 30" beige racks from CC
    • target controls needed summer 2012
    • solenoid control system needed fall 2012
  • Review of minutes from 31-Aug-2011 meeting
  • Talks at the collaboration meeting
    • Oct. 7, 11:00am - Electronics -- Speaker
    • Oct. 7, 11:30am - Trigger -- Speaker
    • Oct. 7, 12:00pm - DAQ -- Speaker
    • Oct. 7, 12:00pm - Monitoring/Controls -- Speaker
  • Hall, counting house and tagger building networking - Elliott, Hovanes
  • Update on simulated raw data - Dave A, Elliott
  • CODA 3 Status - Dave A
  • Trigger configuration - Alex
  • Review of other DAQ group activities for Hall D - Elliott
    • event disentangler
    • automated readout list
    • farm manager
  • Counting house elog - SNS version may be interesting - Elliott
  • Counting house rack hardware purchase - Hovanes, Elliott
  • Controls
    • Danfysik slow dump working - Elliott
    • test stand - Hovanes
    • Solenoid Controls Redesign - Elliott
    • solenoid controls fast DAQ - Yi
    • IRMIS - Hovanes
    • JavaIOC and related projects - Elliott
  • CCDB online requirements - Elliott
  • Multi-crate trigger test - Bryan
  • FDC cosmic ray test - Beni
  • Electronics, trigger and DAQ status reports - Chris, Alex, Dave, Fernando, Ben, Ed, William, Bryan
  • Mantis Task Tracker


Time/Location

1:30 PM Wed 14-Sep-2011 CC F326


Announcements

Next Meeting

1:30 PM Wed 28-Sep-2011 CC F326


Minutes

Present: Elliott W, Simon T, Mark I, Bryan M, Graham H, Carl T, Dmitry R, Hovanes E, Dave A, Vardan G, Beni Z, Alex S, David L, Yi Q.


Collaboration Meeting

A tentative list of speakers was determined. Elliott will work out the exact schedule.


Hall Networking

Elliott and Hovanes are in the middle of discussions with Bryan Hess concerning getting networking going in the hall, counting house, tagger building and trailer. Bryan is getting quotes for the hardware. Bryan says there is no great advantage in delaying purchasing network equipment in the hope it comes down in price, except for 10 GBit hardware. He will propose a flexible system that we can purchase soon that will be easily upgradable to 10 GBit when we need it.


CODA 3 Status

Dave Abbott gave an update on the status of the many sub-projects that comprise CODA 3. Many are ready, some are almost ready, and some need more work (see his slides).

  • Graham said the first usable release should be shortly after Thanksgiving.
  • Initial release will support a single event builder, up to 5 crates and event blocking.
  • EVIO V4 is released in Java, needs to be ported to C++ (by Carl).
  • DAQ group is also working on other projects, but this is the highest priority.


Trigger Configuration

Alex gave an overview of the hardware in the trigger, the kinds of information needed to configure the trigger, and their initial efforts to organize trigger configurations in a database (see his slides). Discussion ensued on the distinction between managing trigger configurations and storing the one used for a particular run in a place suitable for offline access and the role of the CCDB in relation to their trigger database. He proposed that initially triggers will be downloaded into the hardware via autonomous processes (AFECS), but questioned whether this functionality might be folded into the ROC itself. Elliott questioned that, although this was possible, was mixing such different functionality in the same code a good idea.


Other DAQ Tasks

  • Elliott and Carl reported that the disentangler code will be written in a modular way such that parts of it could be run stand-alone in small test systems that involve event blocking.
  • Vardan reported he is almost finished the planning of the "farm manager" and will give a report at the next meeting.
  • Bryan M reported continuing progress on the automated readout list.


Elog

Elliott reported discovery of yet another candidate for the counting house Elog from the SNS. We need to begin an elog selection effort in the near future.


Counting House Racks

Elliott reported securing 18 additional racks from the CC for the counting house. Hovanes, Mark S and Elliott are putting together an order for hardware needed in the racks (power, shelves, etc).


Controls

  • Elliott reported that Sarin Philips determined that the Danfysik slow dump is working. When we changed the dump resistor we didn't realize that the dump control circuit needed modification at the same time. He tested the slow dump circuit with the original dump resistor and it worked fine.
  • Hovanes reported on continuing development of the test stand. Elliott noted that additional equipment will be moved there as we move out of the Test Lab, but that the solenoid controls racks will not be stored in EEL 126.
  • Elliott reported on the subgroup looking into redesign of the solenoid control system based on experience during the test. See the link in the agenda to the to-do list.
  • Yi reported that the new NI fast DAQ device has arrived. This one has a single ADC per channel, unlike the two previous versions that had one ADC multiplexed over many channels, which led to cross-talk. If the NI device does not work then we will implement a VME-based system but with a single ADC per channel, not multiplexed.
  • Hovanes and Elliott reported on major changes in the IRMIS development effort. The original web services based interface project has been terminated and the developer working on it has moved on. The one remaining IRMIS core developer plans to release a Python-based interface (PyIRMIS) this fall. PyIRMIS will likely be adopted by the new BNL light source...if so it should have a good future. If not, CLAS12 (Serguei B) has been working on something similar which may be useful to Hall D.
  • Elliott reported on lack of progress on the EPICS JavaIOC. The main developer (Marty Kraimer) had to put it on hold due to higher priority projects for the new BNL light source. He hopes it will get back on track soon.


CCDB in the Hall D Online

Elliott noted that the "conditions" part of the CCDB needs to be developed, as it will play a major role in the Online. He further noted that we need to clearly distinguish between requirements for online configurations, online conditions and offline calibrations. There was much discussion about the role of the CCDB and much of it was due to confusion among the three.


Other projects

  • Bryan reported on continuing progress in the multi-crate trigger test. He has new versions of the TI, SD and CTP.
  • Alex reported on the need for boards that allow one to use flash boards with the old TI in a regular VME crate. Later, Fernando said some of these are in or on order. Coordinate with Fernando on this.