The current status of the reflector production for ASTRO-H/HXT
2010
Japan's 6th X-ray satellite mission ASTRO-H , which is planed to be launched in the fiscal year 2013, will carry
two hard X-ray telescopes (HXT) using depth-graded multilayer reflectors 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 ASTROH
/HXT has been established through the balloon borne experiments, InFOCμS and SUMIT mission. The HXT
consists of about 1300 foil reflectors of which a size of the 200 mm mirror length and the diameter range of
120-450 mm which is much larger that those for the balloon borne experiments. To clear the requirements of
the angular resolution and the effective photon collecting area for ASTRO-H /HXT, we should produce twice
the total number of reflectors and select them. Therefore we need to produce more than 5000 foil reflectors for
the two flight telescopes. The installation of the production line and optical evaluation system dedicated to the
ASTRO-H /HXT has been almost done. We are testing and improving the production line through productions
of several sizes of reflectors. The mass production of the reflectors for the flight model is scheduled to start from
July 2010.
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