2-mm-thick large-area CdTe double-sided strip detectors for high-resolution spectroscopic imaging of X-ray and gamma-ray with depth-of-interaction sensing

Minami, Takahiro; Katsuragawa, Miho; Nagasawa, Shunsaku; Takeda, Shin’ichiro; Watanabe, Shin; Tsuzuki, Yutaka; Takahashi, Tadayuki

doi:10.1016/j.nima.2023.169024

Nuclear Instruments and Methods in Physics Research Section A:

2024

DOI: 10.1016/j.nima.2023.169024

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2-mm-thick large-area CdTe double-sided strip detectors for high-resolution spectroscopic imaging of X-ray and gamma-ray with depth-of-interaction sensing

Takahiro Minami,

Miho Katsuragawa,

Shunsaku Nagasawa

et al.

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Wide-band x-ray observatory for the time domain astronomy era: CHRONOS

Nakazawa,

Enoto,

Iwakiri

et al. 2024

Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray

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Chronos is a X-ray observatory concept capable of "hour-level" follow up observations of transient alerts in 2030s' multi-messenger astronomy, with 0.3-40+ keV wide X-ray band-width and 250-300 nm ultra-violet (UV) coverage. The mission has a good hard X-ray imaging spectroscopy with > 9 ′ field of view, the soft X-ray imager with > 30 ′ field of view, and the UV imager with > 7 • field of view. Aiming at launch in mid-2030s, the mission is designed to provide wide-band spectroscopy of time dependent high-energy phenomena. The low background Further author information: (Send correspondence to K. N.

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Wide-band x-ray observatory for the time domain astronomy era: CHRONOS

Nakazawa,

Enoto,

Iwakiri

et al. 2024

Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray

View full text Add to dashboard Cite

show abstract

Prototype fine-imaging narrow field of view semiconductor Compton telescope with shielded coded-mask, mini-SGI

Okuma,

Nakazawa,

Takeda

et al. 2024

Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray

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Semiconductor Compton telescope (SCT) is one of the promising technologies in cosmic MeV gamma-ray observation, because of good angular resolution measure thanks to its high energy and positional resolutions. However, it cannot be better than a few degrees because of quantum limitation, known as doppler broadening. With improving sensitivity in MeV astronomy, realization of 10-arcmin-level of angular resolution is becoming more important. Combining a coded-aperture mask imaging to SCT is the simplest measure to obtain this level of angular resolution in MeV astronomy. Since the mask made of heavy metal is a BGD source and contribution from bright sources and CXB limits the statistical significance of the mask decoding, we propose the concept of attaching a coded mask to a narrow-field Si/CdTe SCT such as the SGD on the ASTRO-H mission. We developed a concept verification system, mini-SGI, adopting 0.5 mm thick DSSDs and 2 mm thick CdTe-DSD, covered with BGO active shield. By irradiating a 133 Ba source, we succeeded to obtain 1 • resolution coded-mask imaging applied to Compton reconstructed image with ARM resolution of 9.8 degree and 3.0 degree to 81 keV and 356 keV lines, respectively.

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2-mm-thick large-area CdTe double-sided strip detectors for high-resolution spectroscopic imaging of X-ray and gamma-ray with depth-of-interaction sensing

Cited by 2 publications

References 31 publications

Wide-band x-ray observatory for the time domain astronomy era: CHRONOS

Wide-band x-ray observatory for the time domain astronomy era: CHRONOS

Prototype fine-imaging narrow field of view semiconductor Compton telescope with shielded coded-mask, mini-SGI

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