# Cerium-Doped Fused-Silica Fibers as Wavelength Shifters

## TL;DR

This study assesses Ce-doped fused-silica fibers as wavelength shifters for scintillation detectors, focusing on their performance, radiation tolerance, and potential for high-precision timing in collider experiments.

## Contribution

It provides experimental evaluation of Ce-doped silica fibers' performance and radiation hardness, exploring their suitability for future high-energy physics applications.

## Key findings

- Ce-doped fibers show promising light yield and pulse shape characteristics.
- Radiation exposure affects fiber performance, but they maintain functionality.
- Potential application in high-luminosity collider timing systems.

## Abstract

We have evaluated the performance of a Ce-doped fused-silica fiber as wavelength shifter coupled to a CeF$_{3}$ crystal using electron beams at CERN. The pulse shape and collection efficiency were measured using irradiated (100 kGy) and un-irradiated fibers. In addition, we evaluated the light yield of various Ce-doped fibers and explored the possibility of using them in the future, including for precision timing applications in a high-luminosity collider environment.