Development of double-sided CdTe strip detectors for γ-ray imaging and spectroscopy

Shin Nosuke Ishikawa, Shin Watanabe, Taro Fukuyama, Goro Sato, Motohide Kokubun, Hirokazu Odaka, Shinya Saito, Tadayuki Takahashi, Kazuhiro Nakazawa, Takaaki Tanaka

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Abstract

By reading out both anode and cathode strips, double-sided CdTe strip detectors can achieve a large area and a high position resolution with few readout channels, which makes them very attractive for X-ray and γ-ray imaging and spectroscopy. We have developed double-sided CdTe strip detectors, 1:28 × 1:28 cm2 in size and 0.5 and 2.0mm in thickness. Both electrodes are divided into 32 orthogonal strips with a pitch of 400 μm. For a detector of 0.5mm thickness, the energy resolution was measured to be 1.5 keV (FWHM) at 60 keV. For the 2.0-mm-thick detector, an energy resolution of 8.0 keV (FWHM) at 662 keV was obtained using only the anode signal. By combining both the anode and cathode signals, we successfully improved the spectral performance and measured an energy resolution of 5.9 keV (FWHM) at 662 keV.

Original languageEnglish
Article number116702
JournalJapanese Journal of Applied Physics
Volume49
Issue number11
DOIs
Publication statusPublished - 2010 Nov

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ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Ishikawa, S. N., Watanabe, S., Fukuyama, T., Sato, G., Kokubun, M., Odaka, H., Saito, S., Takahashi, T., Nakazawa, K., & Tanaka, T. (2010). Development of double-sided CdTe strip detectors for γ-ray imaging and spectroscopy. Japanese Journal of Applied Physics, 49(11), [116702]. https://doi.org/10.1143/JJAP.49.116702