ATLAS 5D Calorimetry

Monday 29 Sept 2025, 08:30 → 09:35 America/Los_Angeles

84/1-B188 - Ballam (SLAC)

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1 Introduction

2 Vertex t0 reconstruction in simulated events

• Track-cell matching
• Machine learning

3 Vertex t0 in data

• Run 3:
  • calibration
  • cross-talk
  • cell weighting
• Run 4:
  • Calibration using HGTD

4 LAr reconstruction

• machine learning pulse shape
• timing optimization
• cross-talk

5 HGTD / LAr timing combination

6 Jet timing and particle flow

Use of LAr timing to improve particle flow
jet time for delay jets