Geometry optimization for long-lived particle detectors
Abstract
The proposed designs of many auxiliary long-lived particle (LLP) detectors at the LHC call for the instrumentation of a large surface area inside the detector volume, in order to reliably reconstruct tracks and LLP decay vertices. Taking the CODEX-b detector as an example, we provide a proof-of-concept optimization analysis that demonstrates the required instrumented surface area can be substantially reduced for many LLP models, while only marginally affecting the LLP signal efficiency. This optimization permits a significant reduction in cost and installation time, and may also inform the installation order for modular detector elements. We derive a branch-and-bound based optimization algorithm that permits highly computationally efficient determination of optimal detector configurations, subject to any specified LLP vertex and track reconstruction requirements. We outline the features of a newly-developed generalized simulation framework, for the computation of LLP signal efficiencies across a range of LLP models and detector geometries.
- Publication:
-
Journal of Instrumentation
- Pub Date:
- September 2023
- DOI:
- 10.1088/1748-0221/18/09/P09012
- arXiv:
- arXiv:2211.08450
- Bibcode:
- 2023JInst..18P9012G
- Keywords:
-
- Large detector systems for particle and astroparticle physics;
- Particle tracking detectors;
- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment;
- Physics - Instrumentation and Detectors
- E-Print:
- 46 pages, 11 figures, 3 tables