Data Acquisition System

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

• How to run CODA

• Online Monitoring

• Mott Analysis

• CODA Summary

• CODA Scripts

Manuals and References

• Jefferson Lab Data Acquisition Group CODA Wiki [1]

• CAEN VME Crate Manual - VME8200 9U 21Slot (VME64x backplane with no P0 connector) media:VME8200_Manual.pdf

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