Development of a multi-pixel photon sensor with single-photon sensitivity

Details Development of a multi-pixel photon sensor with single-photon sensitivity Development of a multi-pixel photon sensor with single-photon sensitivity

2003-12-04

arxiv.org/abs/physics/0312017v1

Nucl.Instrum.Meth. A523 (2004) 147-157

Physics

Instrumentation and Detectors

39 pages, 22 figures, submitted to Nucl. Intr. and Meth. A

Scientific paper

10.1016/j.nima.2003.12.027

A multi-pixel photon sensor with single-photon sensitivity has been developed, based on a technology of a hybrid photo-detector (HPD) consisting of a photocathode and a multi-pixel avalanche diode (MP-AD). The developed HPD has a proximity focused structure, where a photocathode and an MP-AD are facing each other with a small gap of 2.5 mm. The MP-AD, which has an effective area of 16x16 mm2 composed of 8x8 pixels, has been specially designed for the HPD. The gain of the HPD reaches 5x10^4, sufficiently high to detect single photons with a timing resolution better than 100 ps. Number of photoelectrons up to four can be clearly identified in a pulse-height spectrum as distinct peaks, thanks to the low noise characteristics of the HPD. It is also demonstrated that the HPD can be operated with good performance in a magnetic field as high as 1.5 T

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