Electric charge estimation using a SensL SiPM

Abstract

The Silicon Photomultipliers (SiPMs) are commonly used in the construction of radiation detectors such as those used in high energy experiments and its applications where an excellent time resolution is required for triggering. In most of this cases, the trigger systems electric charge information is discarded due to limitations in data acquisition. In this work we propose a method, using a simple radiation detector based on an organic plastic scintillator 2×2×0.3 cm3 size, to estimate the electric charge obtained from the acquisition of the fast output signal of a SensL SiPM model C-60035-4P-EVB. Our results suggest a linear relation between the reconstructed electric charge from the fast output of the SiPM used with respect to the one reconstructed with its standard signal output. Using our electric charge reconstruction method, we compared the sensitivity of two plastic scintillators, BC404 and BC422Q, under the presence of 90Sr, 137Cs, 60Co and 22Na radiation sources.

The conceptual design of the miniBeBe detector proposed for NICA-MPD

“…SensL SiPMs are produced having a fast output pin. As shown in [8], this output corresponds to the time derivative of the standard output signal. Its rise time is 1 ns and its pulse width is 3.2 ns.…”

Intrinsic time resolution and efficiency study for simulated scintillators plastics with Geant4

“…The deposited energy (E dep ) by the incident particle is related and increases or decreases with the charge deposited, which can be obtained from the pulse of the photo-senor [8]. For the case where it is required to measure simultaneously the deposited charge and the response time of the detector, it is commonly used a Quad Digital Channel (QDC) and a Time to Digital Convert (TDC), respectively, to make a scatter plot.…”

“…From the standard pulse, it is possible to reconstruct the deposited charge, making an integration of it, for this reason, reading this pulse gives physical information. However, recently, it has been shown that the deposited charge can be reconstructed from the fast signal [8]. Therefore, this signal can be taken for a higher detector response, due to its rise time and improve the TR value.…”