A coincidental timing model for the scintillating fibers

TL;DR

This paper presents a comprehensive model for the coincidental timing in scintillating fibers, incorporating fiber geometry, photon emission, and detection, validated by experimental measurements showing excellent agreement.

Contribution

The paper introduces a detailed timing model for scintillating fibers that accounts for various physical and geometrical factors, extending to include triggering mechanisms and experimental validation.

Findings

Model accurately predicts coincidental timing distributions.

Excellent agreement between theoretical predictions and experimental data.

Highlights importance of photon number in timing resolution.

Abstract

A model describing the coincidental timing of scintillating fibers is developed. Fiber geometry, the rate of scintillation decay together with the mean number, spatial dispersion and attenuation of emitted photons is considered. For a specific selection of probability distributions and parameters involved, the entire coincidental timing distributions, corresponding FWHM values and the photon detection efficiencies are extracted. The significance of the number of photons from the scintillation process is specially emphasized. Additionally, the model is extended to include a triggering feature, experimentally realized by coupling fibers to any photon resolving device. Finally, the measurements of a coincidental timing distribution were performed, with an excellent agreement found between the experimental and predicted theoretical results.