Development of large area avalanche photodiode for future space research

Tomoko Ikagawa*, Jun Kataoka, Nobuyuki Kawai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We report on the performance of recent avalanche photodiodes (APDs) produced by Hamamatsu photonics as a new X-ray and γ-ray detector. An FWHM energy resolution of 6.5% was obtained for direct detection of 5.9 keV X-rays, whereas 9.4% was obtained for 59.5 keV γ-rays measured with a CsI crystal. Because of their small volumes and low operating bias voltage, APDs are promising devices for future space research. We are planning to use them for our small satellites, CUTE-1.7 and Hu-ring.

Original languageEnglish
Pages (from-to)345-346
Number of pages2
JournalProgress of Theoretical Physics Supplement
Publication statusPublished - 2004
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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