Scintillator tiles read out with silicon photomultipliers

O Pooth,S Weingarten,T Radermacher,L Weinstock

doi:10.1088/1748-0221/10/10/t10007

Abstract

A detector prototype based on a fast plastic scintillator read out with silicon photomultipliers is presented. All studies have been done with cosmic muons and focus on parameter optimization such as coupling the SiPM to the scintillator or wrapping the scintillator with reflective material. The prototype shows excellent results regarding the light-yield and offers a detection efficiency of 99.5% with a signal purity of 99.9% for cosmic muons.

Highlights

Experimental setupThe presented studies were performed with the prototype shown in figure 1
The second stage is a non-inverting amplifier, which sets the total amplification to a factor of 5.7, the bandwidth to 210 MHz, and output pulses to the order of 10 mV for single photons
The module consists of a fast 100 × 100 × 5 mm3 organic scintillator of type BC-404 by Saint-Gobain [11] and is read out by two SiPMs of type S10362-33-100C by Hamamatsu

Summary

Experimental setup

The presented studies were performed with the prototype shown in figure 1. The emission spectrum of the scintillator (figure 8 (a)) has its maximum at λmax = 408 nm and is limited roughly in the range between 380 nm and 500 nm. A typical signal spectrum of the detector, externally triggered with cosmic muons, is shown in figure 9. All measurements presented in the chapter have been performed with cosmic muons, triggered by the coincidence of two scintillators read out with photomultiplier tubes. 050C type SiPM [9]

Parameter optimization

Prototype performance

Findings

Conclusion