The calorimeter, range detector and active target elements of the T2K near detectors rely on the Hamamatsu Photonics Multi-Pixel Photon Counters (MPPCs) to detect scintillation light produced by charged particles. Detailed measurements of the MPPC gain, afterpulsing, crosstalk, dark noise, and photon detection efficiency for low light levels are reported. In order to account for the impact of the MPPC behavior on T2K physics observables, a simulation program has been developed based on these measurements. The simulation is used to predict the energy resolution of the detector.
Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- November 2011
- Multi-pixel avalanche photodiodes;
- Physics - Instrumentation and Detectors;
- High Energy Physics - Experiment
- 15 pages, 25 figures. Work done within the T2K collaboration. Submitted to Nucl. Instr. and Meth. A