IntegrationDaq 231201

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Meeting information

 Meeting time:  1:00pm Eastern
 
 Zoom connection information is sent out by email; please reach out to Paul if you don't have the current link.

Agenda

• Activity updates
• General discussion

Open Issues to be followed up later

1. Discussions with M. Pitt & J. Musson to understand the beam monitor signals we'll be getting
2. Draft timing diagram: DocDB 790
3. Michael, Bob, Brynne, and Paul should put together a list of the integrator running modes we would like to have available

Minutes

Recording at zoomgov:

Participants: R. Michaels, P. King, R. Conaway, M. Gericke, W. Gu, B. Moffit, K. Dehmelt, D. Bishop, R. Fair, B. Shaw, H. Liu, S. Regmi, S. Chatterjee, W. Li, D. McNulty

• Michael reports that the first seven of the remaining prototype boards are being shipped to Manitoba to be tested. The eighth is delayed slightly waiting on a component but is expected shortly
  • The latest firmware is needed to fully test the new boards
  • After they've been tested at Manitoba they would be ready to send out
  • We should add some standoffs below the FPGA so that we can insert and extract the module
    • Michael has a CAD drawing of the housing as modified for the new board; he'll send that to Chris and Armen
    • Daryl will send his suggestions for the standoffs to Chris also
• Bryan has an updated stand-alone driver for the JLab Helicity Generator board
• Bryan has had some success with the zmq interface. He hasn't tried writing to the registers yet.
• Discussion of the integration mode readout
  • The standard readout would get the sum, sum of squares, min, max, and number of samples for the four subblocks and the full window
  • Discussion of how to to get a waveform for a subset of the helicity windows into the stream for CODA for the timing alignment
    • Getting the waveform for 16ch of one helicity window (~7000 samples) would be 448 kbytes of data --- Bryerton thinks that we might overfill the buffer before the DMA would read it out
      • Could use a narrower helicity readout window, trigger on the beam sync signal, and walk the trigger time relative to the beam sync in order to find the tune-mode pulse in all the channels
      • Bryerton will take a look at how many samples we could take from all 16ch and how long it would be before we could grab another waveform
      • Other options would be to only do this for a subset of the channels.
  • We'll work to get the specification document over the next two weeks, and then ask the TB if they want a full presentation or just to look at the spec document
• Manitoba has submitted another run of the PMT base + amplifiers