Development of manufacture of mirror glass substrate for x-ray timing and polarization observatory

In China, X-ray timing and polarization (XTP) observatory will have a collection area of 9,000 cm2 at 2~6 keV. The observatory consists of five identical hard X-ray telescopes and ten identical soft X-ray telescopes. The angular resolution is about 1 arcminute of HPD (half-power diameter). Each telescope consists of a large number of mirror segments precisely assembled together. Our development of the mirror glass substrate is presented in this manuscript. These substrates are produced by slumping commercially available thin glass sheets. Here, we report on our work of manufacturing these substrates. The optimization of the slumping procedure is described and optimal procedure parameters are reported. The figure error of slumped glass substrates was measured by a laser scanner and an interferometer with CGH. The measurement demonstrated that the figure error is lower enough for the construction of XTP telescopes.

[1]  Daniele Gallieni,et al.  Slumping technique for the manufacturing of a representative x-ray grazing incidence mirror module for future space missions , 2013, Other Conferences.

[2]  William W. Zhang,et al.  Development of lightweight x-ray mirrors for the Constellation-X mission , 2007, SPIE Optical Engineering + Applications.

[3]  Paolo Conconi,et al.  IXO glass mirrors development in Europe , 2011, Optical Engineering + Applications.

[4]  Carsten P. Jensen,et al.  Thin-shell plastic lenses for space and laboratory applications , 2004, SPIE Optics + Photonics.

[5]  Hideyuki Mori,et al.  Ground-based x-ray calibration of the Astro-E2 x-ray telescope: II. With diverging beam at PANTER , 2004, SPIE Astronomical Telescopes + Instrumentation.

[6]  Paolo Conconi,et al.  Hot slumping glass technology for the grazing incidence optics of future missions with particular reference to IXO , 2010, Astronomical Telescopes + Instrumentation.

[7]  H. An.  HEFT measurement of the hard X-ray size of the Crab Nebula and the hard X-ray optics of the Nuclear Spectroscopic Telescope Array (NuSTAR) , 2011 .

[8]  William W. Zhang,et al.  Manufacture of mirror glass substrates for the NuSTAR mission , 2009, Optical Engineering + Applications.

[9]  H. Wolter.  Spiegelsysteme streifenden Einfalls als abbildende Optiken für Röntgenstrahlen , 1952 .

[10]  William W. Zhang,et al.  Forming mandrels for making lightweight x-ray mirrors , 2011, Optical Engineering + Applications.

[11]  Monika Vongehr,et al.  Development of slumped glass mirror segments for large x-ray telescopes , 2008, Astronomical Telescopes + Instrumentation.

[12]  Oberto Citterio,et al.  Optics for X-ray concentrators on board of the Astronomy Satellite SAX , 1986, Other Conferences.

[13]  Laura Proserpio,et al.  Development of the glass slumping technology for the production of teh X-raymirrors aboard the international X-ray observatory optical module. , 2011 .

[14]  Laura Proserpio,et al.  Progress on indirect glass slumping for future x-ray telescope optics , 2014, Astronomical Telescopes and Instrumentation.

[15]  R. Petre,et al.  Constellation-X mirror technology development , 2007, SPIE Optical Engineering + Applications.

[16]  Yasuo Tanaka,et al.  The X-Ray Astronomy Satellite ASCA (Initial Results from ASCA) , 1994 .

[17]  R. Petre,et al.  Mirror technology development for the International X-Ray Observatory (IXO) mission , 2009, Optics + Optoelectronics.

[18]  Richard R. Freeman,et al.  Design and development of thin quartz glass WFXT polynomial mirror shells by direct polishing , 2010, Astronomical Telescopes + Instrumentation.