Development of wide-band X-ray/gamma-ray imagers using reach through APD arrays

T. Nakamori, Jun Kataoka, T. Toizumi, M. Koizumi, S. Tanaka, Y. Kanai, Y. Yatsu, N. Kawai, Y. Ishikawa, T. Kawai, N. Kawabata, Y. Matsunaga

Research output: Chapter in Book/Report/Conference proceedingConference contribution


It is quite important to obtain wide band spectra of gamma-ray bursts (GRBs) at the same time in order to probe the emission processes or the structure of GRBs. An avalanche photo diode (APD) is a compact photon sensor with an internal gain of 100. We have developed an X-ray/gamma-ray detector using a back-illuminated reach-through APD (5×5mm2) optically coupled with a conventional CsI(Tl) scintillator, which covers typically from 1 keV to 1 MeV. Further, we developed a 1-dimensional array of the 8/16 APDs (net 16×20 mm2) for the purpose of an imaging photon detector to be used in future GRB missions. Here we present the current status and performance of our hybrid detector.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
Number of pages3
Publication statusPublished - 2009
Externally publishedYes
Event6th Huntsville Symposium on Gamma-Ray Bursts - Huntsville, AL
Duration: 2008 Oct 202008 Oct 23


Other6th Huntsville Symposium on Gamma-Ray Bursts
CityHuntsville, AL



  • Instrumentation: detectors
  • Photometers
  • Spectropraphs

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Nakamori, T., Kataoka, J., Toizumi, T., Koizumi, M., Tanaka, S., Kanai, Y., Yatsu, Y., Kawai, N., Ishikawa, Y., Kawai, T., Kawabata, N., & Matsunaga, Y. (2009). Development of wide-band X-ray/gamma-ray imagers using reach through APD arrays. In AIP Conference Proceedings (Vol. 1133, pp. 73-75)