Hard X-ray imaging with microchannel plate optics |
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| Authors: | R Willingale G W Fraser A N Brunton A P Martin |
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| Institution: | (1) Department of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, U.K |
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| Abstract: | We investigate, by ray-trace simulation, two hard X-ray telescopes based on microchannel plate (MCP) optics. The first is the, by now well known, lobster-eye geometry, while the second is a novel design. The second design uses a pair of MCPs with square channels packed in a radial fashion and represents a conical approximation to the Wolter type I configuration. We show that such telescopes can provide X-ray imaging at energies up to 100 keV. Effective area may be scaled arbitrarily by co-aligning many MCP optics. As an example, we calculate that 50 parallel Wolter I units each of 60 mm diameter and 5 m focal length yield a sensitivity of 1 milli Crab at 45 keV in a 105 second integration. |
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| Keywords: | Instrumentation: miscellaneous MCP optics Telescopes X-rays: general |
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