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.pptx]]
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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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==DAQ Software==
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* Discriminator threshold adjustments (18January2015):
 +
[[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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= How to run CODA =
 
  
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CODA crl files are in: idaq@opsmdaq0: /opt/idaq/crl
 
  
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CODA scripts files are in: idaq@opsmdaq0: /opt/idaq/scripts
 
  
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* From an accelerator machine: '''ssh -X idaq@opsmdaq0'''
 
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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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=='''DAQ Software'''==
  
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  xterm 2: msqld (the CODA msqld database is usually running unless opsmdaq0 was rebooted)
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* '''[[How to run CODA]]'''
  
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  xterm 3: platform
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* '''[[Online Monitoring]]'''
  
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  xterm 4: codamaster
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* '''[[Mott Analysis]]'''
  
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Choose the configuration: '''Mott_Sample'''
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* '''[[CODA Summary]]'''
  
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When the CODA MASTER panel appears, select '''Config''' => '''Enable Buttons'''.
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* '''[[CODA Scripts]]'''
  
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Select '''ET System''', '''Event Builder''', '''Event Recorder''' and '''Run Control'''.
 
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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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== Start and Stop a Run ==
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=='''Manuals and References'''==
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* Jefferson Lab Data Acquisition Group CODA Wiki [https://coda.jlab.org/drupal/]
  
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From Run Control panel, select in the following order:
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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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# '''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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<ol start="8">
 
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<li>'''Stop'''</li>
 
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</ol>
 
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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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== Mott DAQ iocmdaq1 ==
 
  
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* There are two ways to access the Mott DAQ ioc:
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=='''To-do List'''==
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# From an accelerator machine: '''telnet iocmdaq1'''
 
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# From an accelerator machine: '''ioc_concole iocmdaq1'''. Here you need to enter a password to this cannot be done with the idaq account.
 
  
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  The startup file is: idaq@opsmdaq0:/cs/op/iocs/iocmdaq1/startup
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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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The CODA boot file: idaq@opsmdaq0:/opt/coda/boot/mott_roc1.boot
 
  
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* [[Online Monitoring]]
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* '''[[New Delayed Helicity Readout Scheme for Physics Events Trigger]]'''
  
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* [[Mott Analysis]]
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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

Latest revision as of 15:03, 30 May 2017

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
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