Fabrication of a demonstration mandrel for ESA's XEUS mirror development program

Details Fabrication of a demonstration mandrel for ESA's XEUS mirror development program Fabrication of a demonstration mandrel for ESA's XEUS mirror development program

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4012..559a&link_type=abstract

Proc. SPIE Vol. 4012, p. 559-566, X-Ray Optics, Instruments, and Missions III, Joachim E. Truemper; Bernd Aschenbach; Eds.

Physics

Optics

Scientific paper

ESA's XEUS x-ray telescope design asks for segmented Wolter 1 mirror plates with radii up to 5 m and a focal length of 50 m. The mirror plates shall have an excellent optical performance (< 5 arcsec HEW). They shall be made by metal (e.g. Nickel) electroforming. This design approach requires highest quality segmented Wolter 1 mandrel plates, with an on-axis HEW < 2 arcsec and a micro-roughness better than 0.3 nm (rms). We will report about the novel design concept, fabrication approach and verification of the x-ray optical performance of the first XEUS demonstration mandrel.

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