High Luminosity Test Plan Meeting 9/15/2016

This meeting is a discussion on the details of the run plan for the High Intensity testing we would like to do during the Fall 2016 run.

Location: CC A110 Time: 15:00 EST

Agenda

1. L1 trigger commissioning plan Fall 2016
2. Data rate mapping (see below)

DAQ system High Intensity Test
Goal: Test ability to read out events and build them at high rate
Issues:
  - Single stream over IB limited to 1.5GB/s
  - Disk writing limited to 2.5GB/sec (depends on block size)
Requires:
  - For anticipated data rates we will need multiple SEBs. This will
    require a new CODA configuration and possibly additional DCs.
Detailed plan:
  - Take data as close as is possible to 5x10^7 but with dumping the
     data at the SEB level. Record event rate, lifetime after running for 
     5 minutes.
  - Repeat at 80%, 60%, 40%, and 20% beam current
  - Repeat above but with transferring data to multiple ERs and dumping

Data from High Intensity
Goal: Get sample of events taken at high luminosity to allow offline
diagnosis of accidentals etc.
Issues:
   - Data rate will be larger than network/disk speed. Live times will be low
Requires:
   - Normal production CODA configuration with single SEB and output stream.
Detailed plan:
   - Repeat measurements using same currents as above. Each run needs only 5 minutes


Procedure:
10  - Change CODA configuration to multi-SEB
60  - 5 runs (dump at SEB)
10  - Change CODA configuration to multi-ER
60  - 5 runs (dump at ER)
10  - Change CODA configuration to standard for low-luminosity
60  - 5 runs (write to disk)
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210 min = 3.5hrs total time