Author/Authors :
Nakazawa، نويسنده , , K. and Takahashi، نويسنده , , T. and Watanabe، نويسنده , , S. and Sato، نويسنده , , G. and Kouda، نويسنده , , M. and Okada، نويسنده , , Y. and Mitani، نويسنده , , T. and Kobayashi، نويسنده , , Y. and Kuroda، نويسنده , , Y. and Onishi، نويسنده , , M. and Ohno، نويسنده , , Sarah R. and Kitajima، نويسنده , , H.، نويسنده ,
Abstract :
The current status of Schottky CdTe diode detectors, especially in view of their space application for hard X-ray and gamma-ray astronomy, are reported. For practical use in space science, a large-area CdTe diode with a size of 21.5×21.5 mm2 and a thickness of 0.5 mm was developed. A good energy resolution, 2.8 keV (FWHM) at −20°C, and high homogeneity to within 0.2% over the detector were achieved for the spectral performance. This device has successfully passed a series of tests required for its use in space, in view of utilizing Japanese M-V rockets. The tests include the mechanical environment test, vacuum test, long run for weeks and proton-beam radiation. Initial results from a 2×2 segmented electrode large-area device with a guard-ring are also presented.
