AIOP May 20, 2024
The current weekly meeting time is every other Monday at 13:00 US/Eastern
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AIOP - Polarized Photon Source
Agenda:
- Previous Meeting
- Announcements
- Project Progress
- Data mining/preparation
- GitHub AIOP Project (AIOP-Photon issues)
- Task assignments (FTE Profiles)
- PIER Activities
- Middle School Data Science Hackathon Workshop
- HUGS mini-Workshop
- AOT
Minutes
- 5-20-24
- Attendees: David, Thomas, Torri, Hovanes, Jiawei, Armen, Cristiano, Patrick, Naomi
- Review of Minutes from last meeting
- Thorough review was had
- Announcements:
- There is a workshop at jlab on polarization. We should attend
- Project Progress
- data-mining/prep
- Jiawei: not much to report due to GlueX collab meeting
- Patrick
- Have identified more discrepancies
- Need to remove Perp/para change based nudges
- Beam current on req from 30s to Jiawei’s 10s
- Showed a slide showing the difference in 1 vs 2 nudge counts
- David questioned the number of button clicks
- Looks like a nudge event may be many clicks waiting for system responses
- Hovanes agrees
- Naomi: how many > = >>
- Hovanes: 10
- We think it should be 1 event not 2. Jiawei thinks he can combine them
- Do we have the rate of nudges?
- Patrick: no, not yet
- David: we need to have a nominal coherent edge to measure drift
- Naomi: will look (https://halldweb.jlab.org/hdops/wiki/index.php/Standard_Production_Running_Conditions)
- Hovanes: some PERP->PARA->PERP (vice versa) probably contain valid nudge events
- Patrick: being cut out…will go back and look
- ~8% of nudges are when the beam is down. What do we do with them?
- Thomas thinks the case shown indicates the nudge condition was met and the button press happened when beam was away “unintentionally”
- Will try to reclaim with simple filters
- Beam conditions change from before to after nudge
- Naomi: small number get rid of them
- New definition! Nudge sequence = multiple nudges. A nudge is a button press
- Hovanes: look at active collimator too
- Example of beam pos change with an event
- More discussion as to the definition of the start/end of a nudge sequence
- Discussion of definitions of event start/end as it relates to the “training data”