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Kaonlt-Pionlt Meeting Notes
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Date: 2024-12-12
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Attendees:
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- Regina - Alicia Postuma, Nacer Hamdi, Vijay Kumar
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- JLab - Dave Gaskell
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- CUA - Tanja Horn, Casey Morean
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- Virginia - Richard Trotta
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- Ohio - Julie Roche
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Discussion Points:
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Vijay
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- Cache Issues:
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- Read-only access for changes to the cache is causing problems.
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- Recommended procedure:
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1. Use jput to move data to tape.
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2. Use jget to retrieve data to cache.
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- Relevant Python code: GitHub Link.
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- Note: Code needs jget addition for full functionality.
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- Vijay will update file paths to address these changes.
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Nacer
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- HeeP Singles Analysis Update:
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- Incorporated corrections for dummy target subtraction, charge normalization, etc.
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- Dave's Comments on Analysis:
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- Avoid applying cuts to ytar; SIMC cannot perfectly match.
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- A potential real ztar offset may explain discrepancies in ytar plots.
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- SHMS 10.6 GeV:
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- Like Nacer, Dave observed a consistent -5% discrepancy in HMS 2022 data, which required an ad hoc 1.5 mrad angle offset for correction.
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- Currently investigating similar SHMS 2022 data.
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- Suggestions for improving ratios (2-3% target range):
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1. Combine a small angle offset (~0.5 mrad) with improved boiling corrections.
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2. Test boiling corrections using Dave Mack's scaler studies (~2.5% boiling effect from online runs).
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3. Review boiling data from Dave's compiled Excel sheet.
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Alicia
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- GEANT Update:
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- SHMS detectors, including windows and trays, implemented in simulations.
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- Simulations now functional for selected particles.
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- Next Steps:
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- Enhance GEANT simulation further.
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- Integrate real kinematics.
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- Referee Comments:
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- Working on addressing reviewer feedback.
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- Updating formatting before resubmitting to the collaboration for review.
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Richard
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- t-range: Adjusted from 0.15-0.6 to 0.16-0.6.
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- Binning Scheme: Changed to 5 bins in t and 10 bins in phi. Increased the number of events per bin.
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- Outcome: Significant reduction in pion leakage for the lowest t-bin.
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- Upper t-range: Need to reduced from 0.6 to 0.5 to address high-background issues in the highest t-bin.
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- Functional Forms: Now adjusting L and LT terms, in addition to T and TT terms.
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---
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Announcements:
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- Dave and Julia will not attend next week's meeting due to Holidays. The meeting may be smaller.
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