21 January 1993 Production of thin-walled lightweight CFRP/EPOXY x-ray mirrors for the XMM telescope
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Abstract
Attention is given to the ESA High Throughput X-ray Spectroscopy Mission (XMM), a telescope with three modules each consisting of 58 highly nested Wolter I mirrors with a focal length of 7.5 m. The envisaged resolution for an XMM module is 27 arcsec half energy width (HEW) at 8 keV X-ray energy. Results are presented of production and performance tests of the medium-size XMM CFRP/EPOXY mirror shell, including: the production of CFRP carriers as the mirror shell substrate with a global ovality PTV(R) of less than 50 microns and HEW contribution due to roundness of less than 10 arcsec; the replication of Wolter I shaped reflecting gold surface on the CFRP substrate; the measurement of optical performance (HEW is less than 17 arcsec at 1.5 keV X-ray energy); and an investigation of long-term stability for the 10-yr mission time. It is shown that the CFRP/EPOXY mirror shell replication technology can meet the XMM mission requirements.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dieter Pauschinger, Dieter Pauschinger, Wilhelm J. Egle, Wilhelm J. Egle, Walter Neumann, Walter Neumann, Holger Glatzel, Holger Glatzel, D. Rohde, D. Rohde, Hubert Salmen, Hubert Salmen, W. Becker, W. Becker, Gunter Helwig, Gunter Helwig, } "Production of thin-walled lightweight CFRP/EPOXY x-ray mirrors for the XMM telescope", Proc. SPIE 1742, Multilayer and Grazing Incidence X-Ray/EUV Optics for Astronomy and Projection Lithography, (21 January 1993); doi: 10.1117/12.140557; https://doi.org/10.1117/12.140557
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