ToF Simulation Meeting

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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

  • 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.

  • For now, ~100% efficiency will be assumed using the strip with highest ADC or weighted averaging (charge sharing).

  • Simplified electronics model includes ADC and TDC with constant fraction timing; position resolution depends on pixel size or sharing.

Charge Sharing & Geometry

  • Honey’s charge sharing implementation works as expected.

  • Artifact (3-line structure) in EndCAPTOF plots traced to incorrect pixel geometry; Tommy will submit corrected geometry in a new PR.

  • Honey will mirror BarrelTOF workflow for EndCAPTOF once geometry is fixed.

HPD Angular Resolution (Kyohei)

  • Resolution degrades with more support material and is better for inner sensor hits vs. outer.

  • Results suggest material and hit location significantly impact angular resolution—relevant for detector design.

PID Performance

  • Kentaro shared preliminary PID separation plots; plans to improve stats and add uncertainties.

Action Items:

  • Tommy: Submit corrected EdnCAPTOF geometry.

  • Honey: Begin clustering chain for EndCAPTOF after geometry update.

  • Kyohei: Add visual explanation of multiple scattering effects.

  • Kentaro: Upload slides, improve PID stats.

 
 

壮大なTOF/追跡ソフトウェア会議 - 要約分

 

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