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

Motohiro Suyama, Atsuhito Fukasawa, Junji Haba, Toru Iijima, Seigi Iwata, Makoto Sakuda, Takayuki Sumiyoshi, Fumihiko Takasaki, Manobu Tanaka, Toru Tsuboyama, Yoshikazu Yamada

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


A multi-pixel photon sensor with single-photon sensitivity has been developed. Based on a hybrid photo-detector (HPD) technology, it consists of a photocathode and a multi-pixel avalanche diode (MP-AD). The developed HPD has a proximity-focused structure, where the photocathode and MP-AD face each other with a small gap of 2.5mm. The MP-AD, which has an effective area of 16mm×16mm, is composed of 8×8 pixel and has been specially designed for the HPD. The maximum gain of the HPD is 5×104, sufficiently high to detect single photons with a timing resolution better than 100ps. Up to four photoelectrons can be clearly identified as distinct peaks in a pulse-height spectrum, 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 1.5T.

Original languageEnglish
Pages (from-to)147-157
Number of pages11
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1-2
Publication statusPublished - May 1 2004


  • High speed
  • Hybrid photo-detector (HPD)
  • Multi-pixel
  • Photon sensor
  • Single photon

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


Dive into the research topics of 'Development of a multi-pixel photon sensor with single-photon sensitivity'. Together they form a unique fingerprint.

Cite this