Behaviour in Magnetic Fields of Fast Conventional and Fine-Mesh Photomultipliers

TL;DR

This study evaluates how conventional and fine-mesh Hamamatsu photomultipliers perform in magnetic fields, testing shielding solutions and analyzing effects on signal amplitude and timing for use in scintillation counter detectors.

Contribution

It provides experimental data on photomultiplier performance in magnetic fields and assesses shielding effectiveness for time-of-flight detector applications.

Findings

Signal amplitude decreases in magnetic fields

Timing properties are affected by magnetic fields

Effective shielding improves photomultiplier performance

Abstract

The performance of both conventional and fine-mesh Hamamatsu photomultipliers has been measured inside moderate magnetic fields. This has allowed the test of effective shielding solutions for photomultipliers, to be used in time-of-flight detectors based on scintillation counters. Both signal amplitude reduction or deterioration of the timing properties inside magnetic fields have been investigated.