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CIDeR-ML General Meeting
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America/Los_Angeles
Description
https://u-tokyo-ac-jp.zoom.us/j/83932834349
Recording
Minutes:
Quick recap
The meeting focused on updates and discussions regarding the preparation for an upcoming workshop, performance validation of optic SIREN with cosmic muon calibration, and technical details related to LED and PMT angular response analysis. Ryotaro presented findings on PMT angular response using LED data, highlighting the need for acceptance corrections and suggestions to calculate actual angles relative to LED directions for better coverage analysis. Zhenxiong provided updates on optic SIREN validation, noting biases in post-tuning results and plans to investigate sampling improvements and updates to the Cherenkov SIREN. Patrick Tsang and Kazuhiro provided feedback on data labeling clarity and suggested improvements to ensure consistent and effective presentation of results. The group also briefly discussed potential future projects, including Cherenkov profile modeling and cycle-consistency training using LUCiD data, with plans to continue these discussions in the following week.
Next steps
- Ryotaro: Calculate and present the angle between the LED direction and the PMT direction in future analysis
- Zhenxiong: Test different sampling methods to see if results improve
- Zhenxiong: Update the CherenkovSIREN to handle proper cosmic muon predictions
- Zhenxiong: Go through the reconstruction pipeline to evaluate calibration performance using reconstructed information
- Zhenxiong: Create plot showing loss as a function of PMT charge (x-axis) for pre-tune, epoch 5, 10, and 15
- Zhenxiong: Overlay photon shotgun results on the smearing plot
- Omar: Present muon analysis slides in next week's meeting
- Team: Postpone LUCiD projects discussion (including Cherenkov profile modeling) to next week
Summary
Workshop Planning and Logistics
Patrick confirmed that the workshop is over 3 weeks away and accommodations in Hongo are sorted with confirmation emails sent out. He noted that room booking is ready and the next steps involve preparing plans and goals for the workshop. No specific issues or questions were raised during the discussion.
PMT Analysis and LED Firing
Ryotaro presented a report on PMT (Photomultiplier Tube) analysis, focusing on LED firing and photon angle distribution. He discussed the setup with 3 LEDs per mPMT and two types of mPMTs (in situ and ex situ), presenting data on photon entries and cosine distributions. Ryotaro mentioned plans to compare the data with MC (Monte Carlo) simulations and evaluate the number of photoelectrons per flash for each LED and PMT. PatrickD inquired if Ryotaro had presented this to WCTE first, to which Ryotaro responded that he would report it in the next analysis meeting.
Data Precision in Presentations
The team discussed numerical precision in Ryotaro's presentation, with Kazuhiro pointing out that the displayed numbers had more decimal places than necessary, suggesting greater precision than actually present. PatrickD suggested removing unnecessary decimal digits and emphasized that detailed acceptance corrections should be defined by WCTE before implementation for CIDeR. The discussion focused on ensuring appropriate scientific notation without misrepresenting the level of precision in the data.
LED Angle Measurement Discussion
Omar suggested measuring the actual angle of LEDs relative to the direction to PMT to provide more meaningful metrics for LED coverage and direction. Ryotaro acknowledged this and discussed the correlation between angles for collimated and diffuse LEDs. PatrickD provided guidance on calculating additional angles to better understand LED profiles and PMT angular response.
Optic Siren Performance Validation Updates
Zhenxiong presented updates on validating the performance of optic SIREN for cosmic muon calibration, highlighting issues with previous plots due to incorrect hypothesis and observed data setup. She reported that post-tuning results showed significant bias, particularly for high charge events, and discussed ongoing investigations into sampling and updating the Cherenkov SIREN for proper cosmic muon predictions. Patrick Tsang questioned the setup differences between plots, particularly regarding the horizontal axes, and Zhenxiong clarified the changes made to address these issues.
Analysis Plot Improvements Discussion
The team discussed Zhenxiong's analysis plots, with Kazuhiro requesting clearer labeling to avoid confusion between different axes and variables. Patrick noted that the optical siren results looked acceptable except for very low energy cases. The team agreed to create new plots showing loss at different epochs for each configuration. They also discussed potential future projects, including Cherenkov profile modeling and cycle-consistency training using LUCiD data, though these were postponed to the next meeting.
