| Budget Amount *help |
¥6,600,000 (Direct Cost: ¥6,600,000)
Fiscal Year 1994: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 1993: ¥3,900,000 (Direct Cost: ¥3,900,000)
|
|---|
| Research Abstract |
We have studied the development of high throughput X-ray telescope using diamond-turned very thin aluminum mirror substrates. In this study, there are following points to research and develop ; production of mirror substrate, production of smooth mirror surface, deposition of metals for X-ray reflecting mirror surface, design and fabrication of mirror support and their alignment mechanics, development of X-ray facility and X-ray measurement for telescope performance.
On the fabrication of mirror substrate, we have made 0.3 mm thick mirror substrate made by diamond-turned machining and found that it had the shape to give us 1.7 arcmin HPD performance for 2 stage system and also found the surface roughness can be reduced down to 1 mm by acrylic coating, but X-ray performance is not enough high for low scattering X-ray mirror.
On the development of the thin foil mirror profiler with high precision, we have designed and fabricated it assembling laser displacement sensor and precision Z-stage. This system has been connected to the advanced system, namely ultra-precision 3-D cylindrical mirror profiler. To reduce the surface roughness of diamond-turned aluminum foil substrate, we have also tried to make similar mirror with non-spherical polishing technique for nickel coated aluminum surface. For such small sample mirror, we have found that hey have enough smooth surface for X-ray mirror. For Wolter type I mirror made by the same way, its high imaging capability was confirmed as it has small HPD of less than 5 arcsec.
|
