February 26, 2020 online meeting minutes

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present: Sergey Boyarinov, Stepan, Nathan, Valery, Ben

1. RG-F run status

DAQ event rate is only few kHz, data rate significantly below 100MB/s because of gas target, with beam current 250nA

trigger is electron with drift chamber roads and 300MeV EC threshold, seems sufficient for production running

big dead time produced by RTPC readout, cannot run faster then about 1.5kHz if desired lifetime is above 90%

beam current unlikely to be increased, so we will stay with current settings for entire run

event rate/data rate were added to DAQ/Trigger EPICS GUIs

MPOD power supply has some issues - Nathan

logbook GUI insertion policy may be reconsidered - too many GUIs in logbook

some network switches keeps dying, replacement installed already on FC, moving wires there; port 48 is set to 10MBit/fullduplex for etherlite32

trigger bit names should be in trigger GUI, Ben/Valery will implement it

2. Streaming DAQ progress

still need to fix VTP TCP/IP issues (Ben)

reconstruction algorithms to be considered for online data processing: offline code, level1 code, ...; can be tested as 'level3' in current DAQ

will investigate different aspects: DAQ (ben,sergey), reconstruction (sergey,gagik), physics motivation/needs (vpk,stepan), human abilities to run reconstruction online, etc

level3 seems good place to investigate possibility to run reconstruction online

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