April 2nd 2021

• Updates
  • HCAL
    • working on F1 to use 31.25 MHz external clock.

Can you trigger from ECL port (fails) or LEMO port (FIFO overflow - resolution lock failure ) - need to check - check config files which had to be modified for low resolution

• • • tried one FADC but not sure if it is working, will check it, might
    • start testing DVCS
    • overlapping cables 10 out of 60
    • will check trigger output from TI
  • BigBite Shower
    • started connecting trigger monitor BNC cables - 2 cables need to be fixed, ribbon cables from NIM/ECL to TDC, about 1 day
    • started connected cable from patch panel to FADC - 1 day or two to complete
    • new mapping files for FADC will be done
    • take FADC data next week
    • address fixed and firmware updated
    • Fastbus disconnected right now
  • Bigbite Hodoscope
    • could not run the DAQ since Wednesday, 2 weeks ago trigger were moved, using scintillator A instead of B
    • coincidence needed without output of TI, need to make sure this is done correctly - L1A from TI has a lot of jitter so Mark did the retiming to improve that
    • want scintillator B to still be trigger but has be moved
    • checked with Bogdan but not clear - scintillator coverage very small now. Check for preshower maybe ?
    • need two people to move scintillator back, or move scintillator A - add another scintillator ? prefers full coverage - self trigger for hodoscope might be possible - Mark will help setting up on Monday
  • LHRS
    • ET system working : data insertion working and online plots working - small difference with CODA3.1
    • Jack will install remaining detectors in LHRS next week
  • CDet
    • still taking cosmics
    • VETROC : all boards available to be picked - crate in weldment to be installed - need to ask to remove one Fastbus
    • if student can access JLab can start help setting up locally
  • RICH
    • can use Fastbus or VETROC : preference in Test Lab
  • Bigbite GRINCH
    • managed to get VETROC decoder working with CODA3, looks ok with pulser,still need to take real data with better trigger
    • VETROC in SBS-offline and working
    • need add V792 support
    • port event display to SBS offline
  • GEM
    • GEM TEDF
      • Ben has upgraded firmware
      • All INFN GEMs debugged on Thursday, everything is reading - still need to check pedestal data and after try new firmware
      • will be able to check if can reach 5 KHz ( 2.4 KHz right now )
      • isssues with INFN : using fiber 0 which had issue being read out, bug fixed - APV chip issue, can corrupt low level diagnostic for other APVs
    • new computer from Bryan - waiting for new disks and will finish set up
      • started installing VXS crate for VTP readout - sbsvtp1 and 2 in HCal - some major work to be done for readout with VTP - Ben can give driver details to Bryan later -
    • GEM UVA
      • received repaired APV and backplane - putting back together - few weeks
      • working with Ben trying to find the cause of APV baseline fluctuation

• meeting for computer requirements
  • several ideas to upgrade computer system to handle up to 2 GB/s, 1 single machine will not work ( even using ram disk 1.7 GB/s), two data streams - plan to get 4 computer systems

2 concentrators and 2 raid arrays - still in discussion

• Network upgrade will happen in next few days ( Greenlighted by Jessee ) - 4 x 24 10 gigE fibers

• Paul cleared to be on site - Mid April through May

• Online analysis for GMn and GEn RP
  • need to check PODD throughput
  • online client from ET
  • check if analyzer fast enough to handle the data
  • analyzer to handle two data streams
  • Ole will check throughput of PODD
  • hcana on modern machine limited to 5 to 10 MB/s - output data compressed - ROOT compression might slow down - need to select the compression type
  • need check data structure - most likely ok since flat arrays
  • analysis should clean data significantly - since most is background
  • pi0 background up to 90\%
  • plan farm online analysis