Electro-optical characterization of MPPC detectors for the ASTRI Cherenkov telescope camera
Abstract
This work addresses a systematic and in-depth electro-optical characterization of the Multi-Pixel Photon Counter (MPPC) sensors constituting the camera detection system at the focal plane of the ASTRI telescope prototype. The paper reports the experimental results of a large set of measurements on the MPPC devices in order to provide a reliable qualification of the detector performance and evaluate its compliance with the telescope focal plane requirements. In particular, breakdown voltage, internal gain, dark count rate, cross-talk and extra-charge probability, and absolute photon detection efficiency measurements are performed on the basic sensor device unit as a function of the detector operating conditions.
- Publication:
-
Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- December 2014
- DOI:
- 10.1016/j.nima.2014.09.015
- Bibcode:
- 2014NIMPA.768...32M
- Keywords:
-
- Detector performance;
- Electro-optical characterization;
- Photon detection efficiency;
- Silicon photomultipliers