AIOP Nov. 18, 2024
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AIOP - Polarized Photon Source
Agenda:
- Previous Meeting
- Announcements
- Conferences/Workshops
- Project Progress
- Coherent peak drift evidence
- GitHub AIOP Project (AIOP-Photon issues)
- Milestones: PDF(GitHub AIOP Project AIOP-Photon issues FTE Profiles)
- PIER Activities
Middle School Data Science Hackathon Workshop (Oct. 16) Flappy Bird RL Learning- COMPLETED!HUGS mini-Workshop- COMPLETED!
- AOT
Minutes
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AIOP Meeting Notes - 11/18/24
Attendees: David, Thomas, Torri, Naomi, Armen, Jiawei, Patrick
Note: With the holidays approaching, some work may need to be conducted through alternative means.
Progress Updates
Thomas
- Will run queries to retrieve data on nudges again.
- Plans to search for relevant anecdotes in the logbook.
Patrick
- Shared slides on his investigation into backlash:
- Used S2020 and removed outliers.
- Ensured the beam was operational.
- Observed fixed roll and three groupings of yaw:
- Coherent edge spread (a few hundred MeV).
- Question: Where is this spread originating?
- Hypothesized that variation could be fit-driven:
- Scalar values archived:
- Requires refitting (current fits show errors).
- Utilized Minuit fit.
- Possible hue mismatch with run number (or another factor).
- Need to calculate the error on the coherent edge.
- Highlighted the difference between set point and position.
- Scalar values archived:
Naomi
- Researched coherent peak movement instances:
- Recalled the March 30, 2018 event, where the coherent edge appeared problematic:
- A new diamond spot was located with a very narrow width.
- After the accelerator resumed operation, the width increased significantly.
- Hovannes relocated the beam to a new position for stability.
- Plans to examine CPP logs for periods with significant beam movement.
- Recalled the March 30, 2018 event, where the coherent edge appeared problematic:
Jiawei
- Presented before-and-after plots of coherent peak changes using archived data:
- Data source: HD:CBREM:ENH_REF.
- While the reference plot appears static, it successfully illustrates the difference in coherence.
- Mentioned that a “live plot” is harder to implement but feasible.
Action Items
- Thomas: Follow up on nudge data and search for relevant logbook entries.
- Naomi: Continue analysis in CPP logs for beam movement.
- Patrick: Refine Minuit fit and further explore causes of variation in coherent edge spread.
- Jiawei: Investigate feasibility of implementing a live plot for coherent edge monitoring.
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