November 11th 2021
From Hall A Wiki
- Updates
- HCal
- timing resolution ? Still need to check RF time
- coincidence trigger
- Bigbite Shower
- could not see signal in Shower 17-3 - from last night cosmics
- Preshower gain matching changed after magnet test
- Hodoscope
- working on calibration : offset and timewalk done
- 500 k events - will redo with more statistics
- timing resolution from 250 ps to 150 ps
- working on HV gain curves
- looking at FADC from cosmics : looks ok
- GRINCH
- CDet
- still working on the PMT10 with missing pixels - the paddles might not be separated - might treat them as one single channel
- GEM Bigbite
- everything looks good
- waiting for swap to UV GEM, UV GEM was tested
- GEM INFN clean room
- Helicity
- Beamline/scalers
- no major updates
- still looking at LHRS scalers rate - working with other code and working on handling overflow
- gating of scalers : Steve working on it
- still ET insertion failing after two splits
- scalers inserted in event based
- user events not working at end
- HV
- HCal
- On-going tasks
- EPICS / start End of run logging script (Bob 99% ) - 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 -
- 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 -
- 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 - ( mention at analysis meeting ) - 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
- Possible new tasks
- still issues with non interactive shell - could try for next production
- setup laptop for CH blujeans and Slack - need fix hard drive
- Unresolved issue
- Scaler gating ( need cable and go through TTL/ECL converter )
- 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
- EPICS insertion : working better but still hangs for long runs
- 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
- 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 : VTP and
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
