Performance of large-area avalanche photodiode for low-energy X-rays and γ-rays scintillation detection

T. Ikagawa, J. Kataoka, Y. Yatsu, N. Kawai, K. Mori, T. Kamae, H. Tajima, T. Mizuno, Y. Fukazawa, Y. Ishikawa, N. Kawabata, T. Inutsuka

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

We report on the performance of large-area (5×5 mm2) avalanche photodiodes (APD) produced by Hamamatsu Photonics, as a low-energy X-rays and γ-rays scintillation detector. Hamamatsu APD has a reverse structure and works at relatively low bias voltage of 300-350 V. The leakage current is 1.2 nA at room temperature (25°C) and decreases to 10 pA at -20°C for an avalanche gain of 50. The best FWHM energy resolutions of 9.4±0.3% and 7.4±0.3% were obtained for 59.5 keV γ-rays from 241Am and 122 keV γ-rays from 57Co sources, respectively, as measured with a 5×5×5 mm3 cubic CsI(Tl) crystal. We show that the minimum detectable energy for the scintillation light is remarkably low; 4.6 keV at room temperature (20°C) and 1.1 keV at -20°C. 5.9 keV X-rays from 55Fe were clearly resolved at -20°C with an FWHM resolution of 32.9±0.3%. These results suggest that Hamamatsu APD can be a promising device for future applications in low-energy scintillation detection.

Original languageEnglish
Pages (from-to)671-679
Number of pages9
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume515
Issue number3
DOIs
Publication statusPublished - 2003 Dec 11
Externally publishedYes

Fingerprint

Avalanche photodiodes
Scintillation
avalanches
scintillation
photodiodes
rays
Full width at half maximum
X rays
Scintillation counters
x rays
Bias voltage
Leakage currents
Photonics
energy
room temperature
Temperature
Crystals
leakage
photonics
detectors

Keywords

  • Avalanche photodiode
  • Low-signal scintillation detector
  • Minimum detectable energy

ASJC Scopus subject areas

  • Instrumentation
  • Nuclear and High Energy Physics

Cite this

Performance of large-area avalanche photodiode for low-energy X-rays and γ-rays scintillation detection. / Ikagawa, T.; Kataoka, J.; Yatsu, Y.; Kawai, N.; Mori, K.; Kamae, T.; Tajima, H.; Mizuno, T.; Fukazawa, Y.; Ishikawa, Y.; Kawabata, N.; Inutsuka, T.

In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 515, No. 3, 11.12.2003, p. 671-679.

Research output: Contribution to journalArticle

Ikagawa, T. ; Kataoka, J. ; Yatsu, Y. ; Kawai, N. ; Mori, K. ; Kamae, T. ; Tajima, H. ; Mizuno, T. ; Fukazawa, Y. ; Ishikawa, Y. ; Kawabata, N. ; Inutsuka, T. / Performance of large-area avalanche photodiode for low-energy X-rays and γ-rays scintillation detection. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2003 ; Vol. 515, No. 3. pp. 671-679.
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AU - Kataoka, J.

AU - Yatsu, Y.

AU - Kawai, N.

AU - Mori, K.

AU - Kamae, T.

AU - Tajima, H.

AU - Mizuno, T.

AU - Fukazawa, Y.

AU - Ishikawa, Y.

AU - Kawabata, N.

AU - Inutsuka, T.

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AB - We report on the performance of large-area (5×5 mm2) avalanche photodiodes (APD) produced by Hamamatsu Photonics, as a low-energy X-rays and γ-rays scintillation detector. Hamamatsu APD has a reverse structure and works at relatively low bias voltage of 300-350 V. The leakage current is 1.2 nA at room temperature (25°C) and decreases to 10 pA at -20°C for an avalanche gain of 50. The best FWHM energy resolutions of 9.4±0.3% and 7.4±0.3% were obtained for 59.5 keV γ-rays from 241Am and 122 keV γ-rays from 57Co sources, respectively, as measured with a 5×5×5 mm3 cubic CsI(Tl) crystal. We show that the minimum detectable energy for the scintillation light is remarkably low; 4.6 keV at room temperature (20°C) and 1.1 keV at -20°C. 5.9 keV X-rays from 55Fe were clearly resolved at -20°C with an FWHM resolution of 32.9±0.3%. These results suggest that Hamamatsu APD can be a promising device for future applications in low-energy scintillation detection.

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