AIOP Dec. 16, 2024

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AIOP - Polarized Photon Source

Agenda:

1. Previous Meeting

2. Announcements

3. Conferences/Workshops
   • NP AI PI Exchange Meeting (Dec. 4-5 Washington D.C.)(David, Thomas, Naomi)

4. Project Progress
   • Coherent peak drift evidence
   • GitHub AIOP Project (AIOP-Photon issues)
   • Milestones: PDF(GitHub AIOP Project AIOP-Photon issues FTE Profiles)

5. PIER Activities
   • Middle School Data Science Hackathon Workshop (Oct. 16) Flappy Bird RL Learning - COMPLETED!
   • HUGS mini-Workshop - COMPLETED!

6. AOT

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AIOP Source 11-18-24

Attendees

David, Thomas, Torri, Naomi, Jiawei, Armen

Jiawei Waymo internship: 3 months over summer. Will resume this work after.

Progress

• Jiawei looked into specific nudge events
  • 4 examples
    • 2018-03-29/30: Beam spot change
      • Unknown why the beam spot was changed
      • Before and after scalar ratio values are different... maybe the AMO had different beam current but not updated. Maybe fitter issues
    • 2018-03-05: Long accel down
    • Run 71350/71351: David failed to restore spectrum
    • 2022-06-25: Cristiano nudge
      • Mysteries abound: no 3 plateaus in beam position. Spectrum looks odd. Seems that there were 3 nudges and the edge dropped 60 MeV
      • We looked at Naomi’s nudge and there seems like little correlation before 12:18 but seems like strong PITCH to edge correlation
  • Todo: Take all nudge events, shuffle, take the first 10. Use that time with a +/- 5 min (or 10 min) window and make the Naomi plots. Plots could be semi-automated using a cnf file for myaplot (or writing the url for the wave gui).
• Naomi suggested maybe using PS pair energy instead of the microscope. It has slower rates and would need reconstruction, but the recon is minimal, could probably be sped up. Advantages of PS Pair E: not dependent on amo normalization. Possibly (need to check) less susceptible to sudden gain changes which demand another amo-reference. At the least, we could compare a fit to the PS pair E edge with the microscope fit result and look for changes in the difference, if that changes then we need a new amo reference. That's the theory.
• We all noted that permitting a diamond spectrum to be stored as an amorphous reference is very trusting of the user, but probably Hovanes fixed that.
• At some point Mark improved the edge fitting routing. We might want to write our own one and refit the microscope data.