A beam monitor detector based on doped silica and optical fibres

TL;DR

This paper presents a novel beam monitor detector using doped silica and optical fibers, capable of measuring beam position, shape, and intensity with easy installation and operation, tested with proton beams.

Contribution

Introduces a new beam monitor detector based on doped silica fibers, including the first study of Sb doped silica fibers' response characteristics.

Findings

Effective measurement of beam parameters demonstrated

Sb doped silica fibers' response characterized for the first time

Detector is easy to install and operate with commercial components

Abstract

A beam monitor detector prototype based on doped silica fibres coupled to optical fibres has been designed, constructed and tested, mainly for accelerators used in medical applications. Scintillation light produced by Ce and Sb doped silica fibres moving across the beam has been measured, giving information on beam position, shape and intensity. Mostly based on commercial components, the detector is easy to install, to operate and no electronic components are located near the beam. Tests have been performed with a 2 MeV proton pulsed beam at an average current of 0.8 {\mu}A. The response characteristics of Sb doped silica fibres have been studied for the first time.