December 3rd 2021

• Updates
  • HCal
    • latency shift during the evening
    • need to investigate
  • coincidence trigger
    • 60 ns window coincidence
    • shift might have been seen during setting up EDTM
    • veto for bigbite low with veto
  • Bigbite Shower
    • trying to take cosmics run with SBS field off : HV looks pretty good
    • can use HV file for SBS Off run
    • want to take another run with SBS on and same HV
    • error message HV GUI : fixed by closing unused GUIs
  • Hodoscope
    • working ok
    • still HV issues
  • GRINCH
  • CDet
    • almost finished with last cosmic for efficiency analysis
    • next week second half
  • GEM Bigbite
    • MPD with errors but run still starts - need to add more diagnostic - rebooting mpd fixed - Ben will change
    • APV disabled - maybe
  • GEM INFN clean room
  • Helicity
    • David and Paul working on analysis
    • issue when writing two streams ? FADC and scalers information recorded - could think record
    • RP detectors with GEn ?
    • helicity decoder board - would give the seed for reported helicity for the trigger
    • feedback ?
    • could try take time setup PITA - beam charge asymmetries to check system, prompt and delayed
  • Beamline/scalers
    • David working on BCM/ unser analysis
    • Charge script by Bob
  • HV
    • Rpi on remote switch
    • send instruction to Steve on how to reboot RPis
    • Steve will put a SBS EPICS page on wiki, want to add instructions
    • hodoscope HV uses proprietary CAEN library ( radiation or too much traffic ) suggest to pull out unused cards to reduce traffic

• On-going tasks
  • EPICS / start End of run logging script (fixed Bob 100% ) - just need to add configuration - will make a test configuration - need to make sure we have all variables - and variables to add at begining / end of run and during the run (EPICS 131 event - need to add to analyzer ) issue with ET - could try run ER and EB on same node - way to restart ET ?
    • Carl looking at issues still unresolved - ER and ET communication - code updated - might fix issues - could try to update emu and ET to test

• • (fixed database issue 100% working ) David readout scalers fine and are in tree - from LHRS - still need SBS side will check with Steve - ( done - looks good on sbs side )
  • script check MPD sync ( Ben , Andrew 20%) - code to unpack information already written - need run with those data - timestamp need some work - ( event count aligned, timestamp look odd maybe will check with Andrew )
  • sync check scripts other modules F1, 1190, FADC ( Andrew , Alex, Mark 20%) - Mark will work to have it available
  • reference channel to all crates - need HCal and Shower + RF - need to add RF to HCAL - 3 cables - in hodoscope crate - if shower FADC available can add

separate - need RC box for shower and hodo if possible - need to check - module will be added ( Mark )

• • Trigger latch TS to TDC ( Bob,Ole 100 % ) - trigger bank has latch
  • event type decoding in analyzer - ( done 100% ) - need update CH analyzer
    • Possible new tasks
      • User event inserted at each split with timestamp, spectrometer information - should discuss with
      • autoanalysis at end of run - ( Paul has something setup 75 % but still need to be tested ) some issues launching jobs automatically - could have 3, one on each machine - not priority

- still issues with non interactive shell - could try for next production

• • • • setup laptop for CH blujeans and Slack - need fix hard drive
  • filling up google sheet with run info

• Unresolved issue
  • Scaler gating ( need cable and go through TTL/ECL converter ) (fixed)
  • TI shower in William office (fixed)
  • (need to test)FADC bad channel - FADC replaced but problem could not be reproduce - need to test more ( on going - low priority ) - FADC in test lab - DAQ setup - need to feed signal
  • (still there)warning PEB ROC - Bryan checking with Dave - might incorrect flag - not sure why - but data still in sync since only happens - still happening - not sure if it is an issue
  • HV can put documentation for other non EPICS control
  • (50%) near 100 MB/s limit for FADC crates - Shower window was divided by 2 - HCal windows - could do 150 ns - Move FADCs to top crate ? - can reach 5.2 KHz now
  • (cannot be fixed - been that way forever) Raster X1 vs Raster X2 anticorrelation
  • (fixed ) EPICS insertion : working better but still hangs for long runs
  • (other issues ) ROC19 busy fiber : issue became worse - MPD23 disabled - firmware fixes to be implemented for reset -
  • (new) ER1 hangup - related to ET issue - VTP can get stuck - resetting run usually fixes
  • (new) TDC errors - just one run though - https://logbooks.jlab.org/entry/3923168
  • (new)HCAL flag file crashing ROCs : file too long ? - max file length to add -
  • (fixed) Raster saturation ( fixed with 20 db attenuator ) -
  • No clear signal in GRINCH - latency was adjusted - need check with beam ( see signal now )
  • HCAL fifo overflow https://logbooks.jlab.org/entry/3925327 - will check HCal people ( maybe empty channels - trigger info )
  • (new) issue with 50 k scripts making entry - logentry script puts a limit on java memory - 50 k and 5 k scripts were changed to use it - might want to use this new script to avoid issues - HALOG from Paul -

Logentry script: https://logbooks.jlab.org/entry/3933875 - is that a ulimit issue ?

• 3820 scalers : issue to address - will get more as spare - and need -
• tftp issue (fixed): network - switch transceiver
• (new) 75 ns timing shift
• ( new) DAQ running with APV and MPD in bad state
• disk filling up
• helicity with several streams

GEn RP

• GEN RP DAQ
  • both VTP working : 10 gigE link from VTP to computer
  • working on VTP update to handle more that 32 MPDs
  • debugging fiber connection
  • will bring VME crate
  • new MPD might arrive for Thanksgiving : 15 MPDs
  • new distribution box ready
  • received lemo cables
  • GEM layers can see clusters and cosmics
  • still DAQ very unstable

• • enpcamsonne cannot ssh out,