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

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

Things to do to speed up the DAQ and reduce deadtime:

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
4. Reduce the Mott Trigger rate by rejecting low energy electrons or dump events:
   1. Increase the E-detector discriminator threshold
   2. Veto the dump events using the beam timing signal