OWG Meeting 26-Oct-2011

Agenda

• Announcements
• Review of minutes from 28-Sep-2011 meeting
• Networking - Hovanes, Elliott
• Review of DAQ group activities for Hall D - Elliott
  • Vardan: farm mgr --> top-level ECS and gui
  • Dave A: simulated raw event file
  • Carl: event disentangler
  • Bryan: automated readout list
• EVIO vsn 4 status - Carl, Elliott
  • built-in dictionary
  • formatted row-wise data storage
• EPICS and the JLab discriminator module - Nerses
• Controls
  • coil taps, signal isolation/amplification and dynamic range - Cody, Elliott
  • Solenoid Controls Redesign - Elliott
  • test stand update - Hovanes
  • Solenoid controls fast DAQ update - Yi
• Conditions database - Dmitry, Mark
• Elog and logbook-like applications - Dave L, Elliott
• PyIRMIS - Hovanes, 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 26-Oct-2011 CC F326

Next Meeting

1:30 PM Wed 9-Nov-2011 CC F326

Minutes

Present: Elliott W, Simon T, David L, Carl T, Nerses G, Bryan M, Hovanes E, Eugene C, Beni Z, Alex S.

Networking

Bryan Hess gave us price lists for all the networking equipment, Hovanes and Elliott will get together to make a proposal, then run it by Eugene. We hope to do this within the next week or so.

DAQ group activities

• Vardan completed the farm manager component. He will write it up and move on to the top-level experiment control system.
• Dave A continues to work on the simulated raw data tape.
• Carl is still busy with the event builder, will get to the disentangler later this Fall.
• Bryan will have a prototype readout list ready soon for Beni's cosmic ray test.

EVIO Vsn 4

Elliott checked in most of his part of the upgrade to v4 (data dictionary, row-wise storage). Carl will get to his part later this Fall after the event builder is ready. There is a long wish list and we'll probably get to all of them. These include a built-in data dictionary and random-access I/O.

EPICS and JLab discriminator

Nerses presented plans and progress on using EPICS to read out scaler information accumulated by the JLab 16-channel discriminator. See his talk for full details. He is aimng for being able to set things at 2 Hz and readout at max 1 kHz.

Controls

• Cody is looking for isolation amplifiers for the coil taps to eliminate cross-talk and baseline shifts. He thinks he can find an amplifier that meets the full range of bandwidth, sensitivity and range requirements.
• Elliott reported on progress on the solenoid controls redesign. Recommendations from the Director's review and the Lehman review have to be addressed. Many were related to avoiding fast dumps, which we now know are not a problem, so it is not clear what we should do about some of the recommendations.
• Yi reported little progress on the fast DAQ since he is working on other things, but that he'll get back to testing the new National Instruments 8-channel non-multiplexed ADC module soon.

Conditions database