Towards 6D Tracking: A Study Of Using Fast-Timing For Measuring Track Position, Time, And Angles
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arXiv
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| Auteurs principaux: | , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866910252332482560 |
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| author | Turbiner, Victor Villhauer, Elena Gupta, Abhiraj Cardiff, Michael Segal, Julie Kenney, Christopher J. Horowitz, Mark Schwartzman, Ariel Dragone, Angelo |
| author_facet | Turbiner, Victor Villhauer, Elena Gupta, Abhiraj Cardiff, Michael Segal, Julie Kenney, Christopher J. Horowitz, Mark Schwartzman, Ariel Dragone, Angelo |
| contents | Current and next-generation particle tracking detectors will incorporate precision timing capabilities with resolutions approaching tens of picoseconds. Using Technology Computer-Aided Design (TCAD) simulations of Low-Gain Avalanche Diode (LGAD) detectors, we demonstrate that oblique particle incidence induces systematic timing variations of hundreds of picoseconds across multiple pixels. We derive an analytical linear model relating inter-pixel timing differences to incident track angles, enabling single-layer angular reconstruction with few-degree precision. Stochastic energy loss fluctuations (Landau fluctuations) impose fundamental limits on both angular resolution and reconstruction efficiency. Comparison with neural network approaches demonstrates that the linear model achieves near-optimal angular resolution, indicating that the physics of charge collection geometry, rather than algorithmic sophistication, dominates the achievable performance. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_24736 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Towards 6D Tracking: A Study Of Using Fast-Timing For Measuring Track Position, Time, And Angles Turbiner, Victor Villhauer, Elena Gupta, Abhiraj Cardiff, Michael Segal, Julie Kenney, Christopher J. Horowitz, Mark Schwartzman, Ariel Dragone, Angelo Instrumentation and Detectors High Energy Physics - Experiment Current and next-generation particle tracking detectors will incorporate precision timing capabilities with resolutions approaching tens of picoseconds. Using Technology Computer-Aided Design (TCAD) simulations of Low-Gain Avalanche Diode (LGAD) detectors, we demonstrate that oblique particle incidence induces systematic timing variations of hundreds of picoseconds across multiple pixels. We derive an analytical linear model relating inter-pixel timing differences to incident track angles, enabling single-layer angular reconstruction with few-degree precision. Stochastic energy loss fluctuations (Landau fluctuations) impose fundamental limits on both angular resolution and reconstruction efficiency. Comparison with neural network approaches demonstrates that the linear model achieves near-optimal angular resolution, indicating that the physics of charge collection geometry, rather than algorithmic sophistication, dominates the achievable performance. |
| title | Towards 6D Tracking: A Study Of Using Fast-Timing For Measuring Track Position, Time, And Angles |
| topic | Instrumentation and Detectors High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2605.24736 |