SiPM-based photodetectors for spectroscopic measurements in wide dynamic range

Abstract

The results of measurements of the characteristics of photodetectors based on large-area SiPM matrices with a wide dynamic range are presented. The potential application of SiPM-based photodetectors for electromagnetic calorimetry in the energy range from hundreds of keV to tens of GeV is explored. The potential application of SiPM in gamma-spectroscopy is also discussed.

Figures (6)

• Figure 1: Fig. 1. Schematic diagram of combining four SiPMs into a photodetector matrix.
• Figure 2: Fig. 2. current-voltage characteristic for photodetectors of 1 and 4 SiPM.
• Figure 3: Fig. 3. Dependences of the relative gain (left) and relative amplitude resolution (right) of a SiPM-based photodetector on the bias voltage.
• Figure 4: Fig. 4. Measured dependences of the signal amplitude from a photodetector based on 4 SiPM at voltages of 40 and 42 V and with FEU-84-3 (left) and the ratio of the amplitudes of 4 SiPM to FEU-84-3 (right) on the DAC code of the LED pulse generator.
• Figure 5: Fig. 5. Dependences of the relative amplitude resolution of photodetectors from one and four SiPMs on the amplitude of the light signal.