The current status of ASTRO-H/HXT development facility
2009
We present the current state of the development system of the hard ray telescope onboard ASTRO-H satellite.
Japan's 6th X-ray satellite mission ASTRO-H, which is planed to be launched in fiscal year 2013, will carry
four X-ray telescopes (XRT). Two of four XRTs are hard X-ray telescopes (HXT) using depth-graded multilayer
reflector which provide us the capability of hard X-ray imaging observation up to 80 keV. ASTRO-H/HXT is the
light-weight hard X-ray telescope using Pt/C depth-graded multilayer and high-throughput thin-foil optics. The
basic technology for fabricating the ASTRO-H/HXT has been established through the balloon borne experiments,
"InFOCμS" (US-Japan international joint experiment) and "SUMIT" missions. (Nagoya University, Osaka
University and JAXA). Major changes from XRTs onboard InFOCμS and SUMIT missions are large aperture
size of 45 cm in diameter, the length of reflectors of 20 cm and the focal length of 12 m (XRTs onboard the
balloon missions above have the aperture size of 40 cm in diameter, 13 cm long reflectors and 8 m focal length).
Now we have almost finished to establish the mirror production facility dedicated to the ASTRO-H/HXT and
are starting to produce foil reflectors for performance verification of 200 mm long reflector. We report the current
status of the development facilities and test foil production.
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