A Tracking Fiber Detector based on Silicon Photomultipliers for the Kaos Spectrometer

TL;DR

This paper presents a novel tracking fiber detector using scintillating fibers and silicon photomultipliers for the Kaos spectrometer, demonstrating high detection efficiency and employing Monte Carlo simulations for device characterization.

Contribution

It introduces a new detector design combining scintillating fibers and SiPMs, with experimental and simulation results validating its performance.

Findings

Detection efficiency between 83% and 100%.

Successful prototype implementation with 2 mm fibers.

Monte Carlo simulation effectively models SiPM photon detection.

Abstract

A tracking detector based on two meters long scintillating fibers read out by silicon photomultipliers (SiPM) is being developed for the Kaos spectrometer at the Mainz Microtron MAMI. Results from a prototype setup using 2 mm square fibers and large area SiPM readout are presented. The detection efficiency of such a combination was measured to be between 83 and 100% depending on the threshold on the SiPM amplitude. A Monte Carlo simulation based on a physical model was employed in order to extract the photon detection efficiency of the SiPM devices.