High Luminosity Test Plan Meeting 9/15/2016
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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
- L1 trigger commissioning plan Fall 2016
- 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) ———————————————————— 210 min = 3.5hrs total time