DAQ Meeting/20180601

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Logistic information

BlueJeans calling instructions:
Toll-Free Number (U.S.& Canada): 888-240-2560
International toll number:     408-740-7256
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Bluejeans link: https://bluejeans.com/475839391

To Do

• All channels everywhere need to be checked, and Happex ADCs need to have their dynamic range and resistor settings checked as well
• All QWeak ADCs need to have a corresponding backup Happex ADC that is already plugged in and ready to go with the exact dynamic range for signals needing to be replaced (using the new Parity analysis framework in development)
• All of the signals and crates and networking connections should be diagrammed (as well as verified regularly) - as per Bob's presentation in apar@adaq3:~/parity/PREX_DAQ_Oct17.pdf
• Per window electronic noise must be negligible in quadrature w.r.t. 171 ppm (counting statistics asymmetry width relevant for physics result) - basically we want our electronics to be so much better than out other limitations that we don't have to explain their problems or limitations in any papers or presentations - see David Armstrong and Bob McKeown arXiv:1207.5238 and Paul Souder and Kent Pashcke (open source) for far more technical details and explanations
• DAQ software needs to be revived and rewritten

• Long-range plan :
  • PAN, post-PAN and PAN-guin (Parity Analyze software) should all be rewritten, primarily to bring its functionality into the current group's control as JAPAN (Just Another Parity ANalyzer).

Bob's Formal TODO List

• During the 2-week visit we managed to do items 1, 4, 5, 6, and the "deploy" part of 2 but not the "testing" part.
• It was a productive visit. We have a fully working DAQ with enough Qweak ADC channels to run; but also HAPPEX ADCs in the HRS and counting room.
• If another visit happens this summer, we'd do the "testing" part of item 2 and also 7, 8, 9. Testing the rate limit will involve learning how to configure and check the timing.
• Item 3 (testing spares) can be done in our test stand; it doesn't need access to the hall, so we can postpone it to the Fall.
• For the software (item 10) I'll try to have a version of "pan" ready to at least look at raw signals. But I am worried about item 10 being ready for the experiment.
• With a fully working DAQ we could do parasitic tests this Fall, if desired.

1. Revive spectrometer crates.
2. Deploy all ADCs and test them.
3. Obtain and test the spares.
4. Build various DAQ configs with subsets of the DAQ crates.
5. Find / remake the RS485 cable between HRS to build full system.
6. Move our DAQ to new computer. 
7. Test rate limit, ensure deadtime zero.
8. Ensure that ET system fast enough for feedback.
9. Revive the synchronization-check system.
10. Online software, a bit undefined since software is changing.
   Some ideas here:
  (a) automatic production of run-dependent database
  (b) feedback
  (c) coil-pulsing
  (d) panguin (GUI showing real-time plots)
  (e) prompt analysis
  (f) e-logbook entries 
  (g) archiving EPICs data

Minutes

• Morning - 9AM - Bob, Tyler, Chandan, Cameron :