Physics – Optics
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21345706b&link_type=abstract
American Astronomical Society, AAS Meeting #213, #457.06; Bulletin of the American Astronomical Society, Vol. 41, p.358
Physics
Optics
Scientific paper
Silicon pore optics have been developed over the last years to enable future astrophysical X-ray telescopes and have now become a candidate mirror technology for the IXO mission. Scientific requirements demand an angular resolution better than 5” and a large effective area of several square meters at photon energies of 1 keV. This paper discusses the performance of the latest generation of these novel light, stiff and modular X-ray optics, based on ribbed plates made from commercial high grade 12” silicon wafers. Stacks with several tens of silicon plates have been assembled in the course of an ESA technology development program, by bending the plates into an accurate shape and directly bonding them on top of each other. Several mirror modules, using two stacks each, have been aligned and integrated to form the conical approximation of a Wolter-I design. This paper presents the status of the technology, addresses and discusses a number of activities in the ongoing ESA technology development and shows the latest results of full area measurements at the long-beamline MPE X-ray test facility (PANTER) and the PTB beam line at the BESSY electron storage ring in Berlin.
Ackermann Marcelo
Bavdaz Marcos
Beijersbergen Marco
Christensen Finn
Collon Maximilien J.
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