Studies on multiplication effect of noises of PPD, and a proposal of a new structure to improve the performance

H. Oide, T. Murase, H. Otono, S. Yamashita

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Pixelated photon detectors (PPDs) are arrayed APDs operated in Geiger-mode. Multi-pixel photon counter (MPPC) is a PPD produced by Hamamatsu Photonics K.K. We performed measurement of total noise rate, random noise rate, after-pulsing, crosstalk, and relative photon detection efficiency for a 1600 px MPPC. The explosive increase of total noise rate to over-voltage is able to be understood of multiplication effect of after-pulsing and crosstalk. Considering the electric field structure of MPPC (p-on-n type) and Geiger-efficiency as a function of the position of initial pair creation, these characteristics are all able to be understood. One suggestion for p-on-n type PPD from these results is narrowing the depletion layer below the multiplication layer to reduce random noise and after-pulsing. Another proposal is to put additional buffer capacitance parallel to the diode to accomplish higher gain with lower over-voltage simultaneously with lower noise rate.

Original languageEnglish
Pages (from-to)324-326
Number of pages3
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume623
Issue number1
DOIs
Publication statusPublished - Nov 1 2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

Fingerprint Dive into the research topics of 'Studies on multiplication effect of noises of PPD, and a proposal of a new structure to improve the performance'. Together they form a unique fingerprint.

  • Cite this