Difference between revisions of "SBS DAQ meetings"

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(December 13th 2019)
(December 13th 2019)
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https://userweb.jlab.org/~efuchey/SBS_BB/Pictures/BBweldment_fulllayout-Real_weldment_5-8.pdf
 
https://userweb.jlab.org/~efuchey/SBS_BB/Pictures/BBweldment_fulllayout-Real_weldment_5-8.pdf
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==INFN GEM==
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Isue with MPD 7 , when masked issue goes to another MPD
  
 
== November 22th 2019 ==
 
== November 22th 2019 ==

Revision as of 10:33, 13 December 2019

Bluejeans

https://bluejeans.com/596873830/?src=calendarLink


December 13th 2019

  • GEp DAQ layout

SBSlayoutTSNewTI.png

  • GMn / Bigbite DAQ layout

https://hallaweb.jlab.org/wiki/images/6/61/BBGlobalScheme_prel.pdf

https://userweb.jlab.org/~efuchey/SBS_BB/Pictures/BBweldment_fulllayout-Real_weldment_1-4.pdf

https://userweb.jlab.org/~efuchey/SBS_BB/Pictures/BBweldment_fulllayout-Real_weldment_5-8.pdf

INFN GEM

Isue with MPD 7 , when masked issue goes to another MPD

November 22th 2019

  • HCAL status
    • debugging old half, 6 channels have issues - TDC or discriminator issues maybe for 4 of them - 2 might be related to VME slot ? -

look with Bryan's decoder located in /site/coda/contrib/devel/dataDecode - if really looks like hardware issue can use VME bus analyzer

    • Ben setup the FADC gui - will be useful for FADC/detector debugging - Scott will write some documentation on wiki
    • start cabling other half of detector maybe next week
    • control pulser - use L1A to trigger LED, or use a VME pulser ( will try to give a DVCS LED board to Juan Carlos )
  • Grinch
    • DAQ issues - crashing for long runs
    • need to investigate - maybe check event size
  • BigBite
    • need new TS crate to check the final timing
    • takes about to generate Shower trigger : 60 ns cable + 60 ns logic + cable 25 m = 100 ns ~ 250 ns

October 25th 2019

  • Detectors DAQ status
    • BigBite
      • ADCs working fine running with CODA 2
      • signals from all shower preshower channels
      • can look at data with scripts
      • add TDCs to setup (27x7 + 2x27 ) = 243 channels, only sums so 52 channels ( 1 x 1877S )
      • try CODA3
    • HCal
      • FADC and F1 all running on HCAL
      • resolution checks, not good right now, might be due to discriminator ( Phillips 715 )
      • looking at cosmics
      • all cables for second half of HCAL
      • still unlock error on 1 TDC , need try lower resolution
      • still on CODA2
  • CODA3 testing (Bob) pdf
    • decoder in Podd can figure out if CODA3 or CODA2 data so should be transparent to SBS online library
    • trigger data not decoded yet
    • Eric tried CODA3 at beginning but still need some work for Fastbus
    • Need CODA3 for VTP
  • ATOM CPU testing
    • does not work out from the box




October 4th 2019

  • Bigbite DAQ status ( Eric )
    • slide here pdf
    • taking data but timing needs to be done to look at detector signals
    • Eric should look at existing PODD classes for shower to decode Fastbus
    • Shower trigger  : less than 200 ns
    • test trigger lines : 190 ns might


  • HCAL DAQ status ( Scott )
    • 2 crates : 1 VXS crates with FADC and 1 VME64X with F1 and FADC
- see cosmics in both crates in FADC , missing in TDC ( need to check new timing with 2 crates )
- resolution lock issue with F1, might be overheating
- add blanks to improve cooling
- reduce resolution of F1 to see if problem goes away
- latency from TI ( OT2 is prompt output less delay down to 200 ns)


  • UVA GEM status (Bryan / Kondo )
- 3 VME crates in clean room with TI ( 2 VME and 1 VXS ) : 2 planes per crate , 1 TI and one fiber, need 1 TI with two transceiver
- using CODA3
- wiki with information on wiki : SBS_DAQ:_GEM_EEL_Cleanroom_setup
- computer ready soon
- 3rd (VXS) crate with SSP and MPDs


  • SSP readout ( Ben )
- 16 MPD for 1 SSP to be tested
- all transceiver and fibers on site
- test radiation hardness of transceivers and fibers


  • BCM digital :
- daughter board design done, need to make prototypes and test


  • Certification of electronics : need to check with Ed Folts ( Nilanga question )


  • CDet
    • All TDC for coordinate in weldment : need checks ?
    • Software : running DAQ CODA and root scripts to analyze, need to check if other functionalities needed. Library can be loaded in Hall A / SBS analyzer
    • amount of TDCs for CDet sufficient
    • 25 TDCs - need to check with Bob