High resolution CdTe detector and applications to imaging devices

Takahashi, Tadayuki; Watanabe, Shin; Sato, G.; Okada, Y.; Kubo, S.; Kuroda, Yoshihiro; Onishi, M.; Ohno, Ryoichi

doi:10.1109/nssmic.2000.949043

Cited by 25 publications

(33 citation statements)

References 13 publications

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“…Although we have demonstrated that our bump method provides high yield when we handle small pixel size [21], [22], no signal was obtained for seven channels out of 64 of the first detector due to a failure in the procedure of connecting the pixels to the fanout board. To improve the yield of the connections, we have fabricated another batch of detectors in different conditions of bump bonding.…”

Section: High Resolution Cdte Pixel Detector and Double-sided Simentioning

confidence: 91%

A prototype Si/CdTe Compton camera and the polarization measurement

Mitani

Tanaka

Nakazawa

et al. 2004

IEEE Trans. Nucl. Sci.

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Abstract-A Compton camera is the most promising approach for gamma-ray detection in the energy region from several hundred keV to MeV, especially for application in high energy astrophysics. In order to obtain good angular resolution, semiconductor detectors such as silicon, germanium and cadmium telluride(CdTe) have several advantages over scintillation detectors, which have been used so far. Based on the recent advances of high resolution CdTe and silicon imaging detectors, we are working on a Si/CdTe Compton camera. We have developed 64-pixel CdTe detectors with a pixel size of 2 mm×2 mm and double-sided Si strip detectors(DSSDs) with a position resolution of 800µm. As a prototype Si/CdTe Compton camera, we use a DSSD as a scatterer and two CdTe pixel detectors as an absorber. In order to verify its performance, we irradiate the camera with 100% linearly polarised 170 keV γ-rays and demonstrate the system works properly as a Compton camera. The resolution of the reconstructed scattering angle is 22• (FWHM). Measurement of polarization is also reported. The polarimetric modulation factor is obtained to be 43%, which is consistent with the prediction of Monte Carlo simulations.

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Section: High Resolution Cdte Pixel Detector and Double-sided Simentioning

confidence: 91%

A prototype Si/CdTe Compton camera and the polarization measurement

Mitani

Tanaka

Nakazawa

et al. 2004

IEEE Trans. Nucl. Sci.

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“…8 Taking advantage of significant development in CdTe technology, we have proposed a new generation of Compton telescope, a Semiconductor Multiple-Compton Telescope (SMCT). The SMCT is a hybrid semiconductor gamma-ray detector which consists of silicon and CdTe detectors.…”

Section: -7mentioning

confidence: 99%

Low-noise double-sided silicon strip detector for multiple-compton gamma-ray telescope

et al. 2003

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A Semiconductor Multiple-Compton Telescope (SMCT) is being developed to explore the gammaray universe in an energy band 0.1-20 MeV, which is not well covered by the present or near-future gamma-ray telescopes. The key feature of the SMCT is the high energy resolution that is crucial for high angular resolution and high background rejection capability. We have developed prototype modules for a low noise Double-sided Silicon Strip Detector (DSSD) system which is an essential element of the SMCT. The geometry of the DSSD is optimized to achieve the lowest noise possible. A new front-end VLSI device optimized for low noise operation is also developed. We report on the design and test results of the prototype system. We have reached an energy resolution of 1.3 keV (FWHM) for 60 keV and 122 keV at 0• C. Contributed to Astronomical Telescopes and Instrumentation

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“…9,10 Taking advantage of significant development in CdTe technology, we are developing a new generation of Compton telescopes, the SGD (Soft Gamma-ray Detector) 5,6,11 onboard the NeXT (New X-ray Telescope) mission proposed at ISAS (Institute of Space and Astronautical Science) as a successor of the Astro-E2, and the SMCT (Semiconductor Multiple-Compton Telescope).…”

Section: -8mentioning

confidence: 99%

Gamma-ray polarimetry with Compton Telescope

et al. 2004

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Compton telescope is a promising technology to achieve very high sensitivity in the soft gamma-ray band (0.1-10 MeV) by utilizing Compton kinematics. Compton kinematics also enables polarization measurement which will open new windows to study gamma-ray production mechanism in the universe. CdTe and Si semiconductor technologies are key technologies to realize the Compton telescope in which their high energy resolution is crucial for high angular resolution and background rejection capability. We have assembled a prototype module using a double-sided silicon strip detector and CdTe pixel detectors. In this paper, we present expected polarization performance of a proposed mission (NeXT/SGD). We also report results from polarization measurements using polarized synchrotron light and validation of EGS4 MC simulation.

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High resolution CdTe detector and applications to imaging devices

Cited by 25 publications

References 13 publications

A prototype Si/CdTe Compton camera and the polarization measurement

A prototype Si/CdTe Compton camera and the polarization measurement

Low-noise double-sided silicon strip detector for multiple-compton gamma-ray telescope

Gamma-ray polarimetry with Compton Telescope

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