Share Email Print
cover

Proceedings Paper

Development of thin foil substrates for an X-ray telescope: II.
Author(s): Hisamitsu Awaki; Kazunori Heike; Youichi Misao; Yuzuru Tawara; Yasushi Ogasaka; Hideyo Kunieda; Hitoshi Ohmori; Weimin Lin; Sei Moriyasu; Yoshiyuki Ueno; Shin-ya Morita; Kazutoshi Katahira; Changling Liu; Hiromichi Honda; Susumu Shioya
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We propose a method to make advanced thin-foil substrates for an X-ray telescope by press forming. Walter Type-I optics, which reflect X-rays twice with their confocal paraboloidal and hyperboloidal reflectors, have commonly been used in X-ray astronomy. However, it is difficult to make substrates for a large X-ray telescope with a high imaging quality. By forming two reflectors from one thin substrate, the accuracy of the angle between two reflectors is determined by the accuracy of a mandrel or a stamping die. We made a stamping die using a precision processing method at RIKEN. After several improvements of our pressing method, we have obtained the substrates with a figure error < 15 um, which corresponds to an angular resolution of about 2' at the focal plane, although a small waviness was found in the mirror surface. We also propose a new holding method of the foil to reduce a displacement of the foil positions. The foil is tightly held with three thin-supports with a thickness of 0.3 mm. We made the test model of a mirror housing, and found that the foil position was determined with σ~12μm.

Paper Details

Date Published: 11 March 2003
PDF: 8 pages
Proc. SPIE 4851, X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy, (11 March 2003); doi: 10.1117/12.461142
Show Author Affiliations
Hisamitsu Awaki, Ehime Univ. (Japan)
Kazunori Heike, Ehime Univ. (Japan)
Youichi Misao, Ehime Univ. (Japan)
Yuzuru Tawara, Nagoya Univ. (Japan)
Yasushi Ogasaka, Nagoya Univ. (Japan)
Hideyo Kunieda, Institute of Space and Astronautical Science (Japan)
Hitoshi Ohmori, Institute of Physical And Chemical Research (Japan)
Weimin Lin, Institute of Physical And Chemical Research (Japan)
Sei Moriyasu, Institute of Physical And Chemical Research (Japan)
Yoshiyuki Ueno, Institute of Physical And Chemical Research (Japan)
Shin-ya Morita, Institute of Physical And Chemical Research (Japan)
Kazutoshi Katahira, Institute of Physical And Chemical Research (Japan)
Changling Liu, Institute of Physical And Chemical Research (Japan)
Hiromichi Honda, Nihon Spin Co. (Japan)
Susumu Shioya, Seiko Co. (Japan)


Published in SPIE Proceedings Vol. 4851:
X-Ray and Gamma-Ray Telescopes and Instruments for Astronomy
Joachim E. Truemper; Harvey D. Tananbaum, Editor(s)

© SPIE. Terms of Use
Back to Top