Design and implementation of electron diverters for lobster eye space-based X-ray optics
| Autor: | Dennis J. Chornay, Paul Houghton, Christopher Bicknell, James F. Pearson, K Keresztes, Richard Willingale, S S Sachdev, J. P. Osborne, Tony Crawford, Charlotte Feldman, Adrian Martindale, Steve Sembay, V Aslanyan |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Physics business.industry Astrophysics::High Energy Astrophysical Phenomena Detector Astrophysics::Instrumentation and Methods for Astrophysics Magnetosphere X-ray optics Electron 01 natural sciences 010305 fluids & plasmas law.invention Telescope Solar wind Optics law Magnet Physics::Space Physics 0103 physical sciences Ionosphere business Instrumentation |
| Zdroj: | Review of Scientific Instruments. 90:124502 |
| ISSN: | 1089-7623 0034-6748 |
| Popis: | Micropore optics have recently been implemented in a lobster eye geometry as a compact X-ray telescope. Fields generated by rare-earth magnets are used to reduce the flux of energetic electrons incident upon the focal plane detector in such a setup. We present the design and implementation of the electron diverters for X-ray telescopes of two upcoming missions: the microchannel X-ray telescope onboard the space-based multiband astronomical variable objects monitor and the soft X-ray instrument onboard the solar wind magnetosphere ionosphere link explorer. Electron diverters must be configured to conform to stringent limits on their total magnetic dipole moment and be compensated for any net moment arising from manufacturing errors. The two missions have differing designs, which are presented and evaluated in terms of the fractions of electrons reaching the detector, as determined by relativistic calculations of electron trajectories. The differential flux of electrons to the detector is calculated, and the integrated electron background is determined for both designs. |
| Databáze: | OpenAIRE |
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