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Description
Zoom
https://cern.zoom.us/j/64362083814?pwd=UVJDSWljQTl6RFEzK25HTUpva2hLZz09
ePIC TOF/Tracking Software Meeting – Summary Minutes
Date: June 24, 2025
Participants: Tommy Tsang, Kentaro Kawade, Prithwish Tribedy, Honey Khindri, Kyohei Ono
Software & Clustering Updates
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Tommy's clustering algorithm is accepted but not yet linked to ACTS; a new pull request will follow after lowering simulation thresholds to improve efficiency.
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For now, ~100% efficiency will be assumed using the strip with highest ADC or weighted averaging (charge sharing).
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Simplified electronics model includes ADC and TDC with constant fraction timing; position resolution depends on pixel size or sharing.
Charge Sharing & Geometry
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Honey’s charge sharing implementation works as expected.
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Artifact (3-line structure) in EndCAPTOF plots traced to incorrect pixel geometry; Tommy will submit corrected geometry in a new PR.
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Honey will mirror BarrelTOF workflow for EndCAPTOF once geometry is fixed.
HPD Angular Resolution (Kyohei)
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Resolution degrades with more support material and is better for inner sensor hits vs. outer.
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Results suggest material and hit location significantly impact angular resolution—relevant for detector design.
PID Performance
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Kentaro shared preliminary PID separation plots; plans to improve stats and add uncertainties.
Action Items:
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Tommy: Submit corrected EdnCAPTOF geometry.
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Honey: Begin clustering chain for EndCAPTOF after geometry update.
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Kyohei: Add visual explanation of multiple scattering effects.
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Kentaro: Upload slides, improve PID stats.
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