Difference between revisions of "Data Acquisition System"

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==DAQ Hardware==
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=='''DAQ Hardware'''==
  
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* Electronic Map of Mott Crates (January 29, 2013):
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* Electronic Map of Mott Crates (May 06, 2014):
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[[Media:ElectronicsMap_20130129.pdf]]
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[[Media:ElectronicsMap_May062014.pdf]]
  
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[[Media:ElectronicsMap_20130129.ppt]]
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[[Media:ElectronicsMap_May062014.pptx]]
  
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* Cabling of FADC, Scalers, and TDC (January 29, 2013):  
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* Cabling of FADC, Scalers, and TDC (February 12, 2014):  
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[[Media:Cable_20130129.pdf]]
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[[Media:Cable_Feb122014.pdf]]
  
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[[Media:Cable_20130129.pptx]]
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[[Media:Cable_Feb122014.pptx]]
  
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* DAQ Timing (January 29, 2013):  
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* DAQ Timing (February 12, 2014):  
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[[Media:DAQ_Timing_20130129.pdf]]
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[[Media:DAQ_Timing_Feb122014.pdf]]
  
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[[Media:DAQ_Timing_20130129.pptx]]
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[[Media:DAQ_Timing_Feb122014.pptx]]
  
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* Discriminator threshold adjustments (18January2015):
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[[Media:Discriminator_threshold_adjustment.odt]]
  
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= How to run CODA =
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[[Media:Discriminator_threshold_adjust.ods]]
  
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* From an accelerator machine: '''ssh -X idaq@opsmdaq0''' (Note: '''idaq''' is the injector DAQ account and uses ssh authorized_keys for login - no need to enter password) and open few '''xterm &''' windows.
 
  
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  xterm 1: telnet iocmdaq1
 
  
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  xterm 2: msqld (the msqld database is usually running unless opsmdaq0 was rebooted)
 
  
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  xterm 3: platform
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=='''DAQ Software'''==
  
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  xterm 4: codamaster
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* '''[[How to run CODA]]'''
  
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Choose the configuration: '''Mott_Sample'''
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* '''[[Online Monitoring]]'''
  
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When the CODA MASTER panel appears, select '''Config''' => '''Enable Buttons'''.
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* '''[[Mott Analysis]]'''
  
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Select '''ET System''', '''Event Builder''', '''Event Recorder''' and '''Run Control'''.
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* '''[[CODA Summary]]'''
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After doing that if you will click on '''Get Status''' you will find status of ''' ER1''', '''EB1''' and '''ROC1'''. All buttons must be green.
 
  
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Select '''Run Control''' and the main CODA panel will appear.
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* '''[[CODA Scripts]]'''
  
  
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== Start and Stop a Run ==
 
  
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After the opening of the Run Control panel, select in order:
 
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# '''Sessions''' => '''inj'''
 
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# '''Configurations''' => '''Cool''' => '''Mott_Sample'''
 
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# '''Platform''' => '''Connect'''
 
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# '''Configure'''
 
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# '''Download'''
 
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# '''Prestart'''
 
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# '''Start'''
 
  
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At the end:
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=='''Manuals and References'''==
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<ol start="8">
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* Jefferson Lab Data Acquisition Group CODA Wiki [https://coda.jlab.org/drupal/]
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<li>''Stop''</li>
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</ol>
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* CAEN VME Crate Manual - VME8200 9U 21Slot (VME64x backplane with no P0 connector) [[media:VME8200_Manual.pdf]]
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and if you want to apply a change or you need a new configuration:
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<ol start="9">
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<li>''Reset''</li>
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</ol>
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and start from number 5.
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=='''To-do List'''==
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* Analysis List:
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# Add delayed helicity analysis for Mott_Sample and Mott_SemiInt Modes. Delayed analysis is already included for Scalers and PEPPo_Int Modes.
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# Modify decoder for the updated Mott_SemiInt mode. Started: /work/idaq/Mott/Analysis/1, Runs: 7642, 7672. Sample: 7673
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# Update MottOnline
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# Replace "PEPPo" with "Mott" in scripts, decoder, ... .
 +
 
 +
 
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* '''[[New Delayed Helicity Readout Scheme for Physics Events Trigger]]'''
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 +
 
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* Things to do to speed up the DAQ and reduce deadtime:
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# Use the new SemiIntFast Mode:
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## Upgrade the time-of-flight readout to the FADC TDC mode
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## Upgrade the scalers readout to the FADC Scaler mode
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## Add Block Readout
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# Reduce the Mott Trigger rate by rejecting low energy electrons or dump events:
 +
## Increase E-detector discriminator thresholds
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## Veto dump events using beam timing signal
 +
 
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* Max's list of random things
 +
# need to get the signal propagation vs. electron TOF delay for the helicity decoder correct

Latest revision as of 16:39, 14 November 2024

DAQ Hardware

  • Electronic Map of Mott Crates (May 06, 2014):

Media:ElectronicsMap_May062014.pdf

Media:ElectronicsMap_May062014.pptx

  • Cabling of FADC, Scalers, and TDC (February 12, 2014):

Media:Cable_Feb122014.pdf

Media:Cable_Feb122014.pptx

  • DAQ Timing (February 12, 2014):

Media:DAQ_Timing_Feb122014.pdf

Media:DAQ_Timing_Feb122014.pptx

  • Discriminator threshold adjustments (18January2015):

Media:Discriminator_threshold_adjustment.odt

Media:Discriminator_threshold_adjust.ods



DAQ Software



Manuals and References

  • Jefferson Lab Data Acquisition Group CODA Wiki [1]



To-do List

* Analysis List:
  1. Add delayed helicity analysis for Mott_Sample and Mott_SemiInt Modes. Delayed analysis is already included for Scalers and PEPPo_Int Modes.
  2. Modify decoder for the updated Mott_SemiInt mode. Started: /work/idaq/Mott/Analysis/1, Runs: 7642, 7672. Sample: 7673
  3. Update MottOnline
  4. Replace "PEPPo" with "Mott" in scripts, decoder, ... .


* New Delayed Helicity Readout Scheme for Physics Events Trigger



* Things to do to speed up the DAQ and reduce deadtime:
  1. Use the new SemiIntFast Mode:
    1. Upgrade the time-of-flight readout to the FADC TDC mode
    2. Upgrade the scalers readout to the FADC Scaler mode
    3. Add Block Readout
  2. Reduce the Mott Trigger rate by rejecting low energy electrons or dump events:
    1. Increase E-detector discriminator thresholds
    2. Veto dump events using beam timing signal
* Max's list of random things
  1. need to get the signal propagation vs. electron TOF delay for the helicity decoder correct
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