Time Resolution and Linearity Measurements for a Scintillating Fiber Detector Instrumented with VLPC's

TL;DR

This paper reports on the time resolution and gain linearity of a scintillating fiber detector with VLPCs, validating a Monte Carlo model and providing recommendations for performance improvements.

Contribution

It presents the first detailed measurements of time resolution and gain linearity for VLPC-based scintillating fiber detectors, supported by a simple Monte Carlo model.

Findings

Time resolution agrees with Monte Carlo predictions.

Gain remains linear up to 600 photoelectrons.

Model-based recommendations for detector performance enhancement.

Abstract

The time resolution for a charged particle detection is reported for a typical scintillating fiber detector instrumented with Rockwell HISTE-IV Visible Light Photon Counters. The resolution measurements are shown to agree with a simple Monte Carlo model, and the model is used to make recomendations for improved performance. In addition, the gain linearity of a sample of VLPC devices was measured. The gain is shown to be linear for incident light intensities which produce up to approximately 600 photoelectrons per event.