Development of X-ray telescope with ultra thin mirror substrate machined by diamond turning
| Project/Area Number |
05452018
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Astronomy
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| Research Institution | Nagoya University |
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Principal Investigator |
TAWARA Yuzuru Nagoya Univ.Dept.of Physics Assoc.Prof., 理学部, 助教授 (10135296)
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| Co-Investigator(Kenkyū-buntansha) |
KUNIEDA Hideyo Nagoya Univ.Dept.of Physics Assoc.Prof., 理学部, 助教授 (00126856)
YAMASHITA Koujun Nagoya Univ.Dept.of Physics Prof., 理学部, 教授 (80022622)
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| Project Period (FY) |
1993 – 1994
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| Project Status |
Completed (Fiscal Year 1994)
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| 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)
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| Keywords | X-ray telescope / X-ray optics / super precision machining / coating / surface microroughness |
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| 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.
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Report
(3 results)
Research Products
(6 results)
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[Publications] K.Tamura^a, K.Yamashita^a, H.Kunieda^a, Y.Tawara^a, A.Furuzawa^a, K.Haga^a, G.S.Lodha^a N.Nakajo^a, N.Nakamura^a, Takashi Okajima^a, Osamu Tsuuda^a P.J.Serlemitsos^b, J.Tueller^b, R.Petre^b Y.Ogasaka^b, Y.Soong^b and K.Chan^b: "Development of balloon-borne hard X-ray telescopes using multilayr supermirror" SPIE. Vol.3113. 285-292 (1997)
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