Dr DONGHUA ZHAO (National Astronomical Observatories, Chinese Academy of Sciences)
The Einstein Probe (EP) mission is dedicated to time-domain astrophysics in 0.5–4 keV energy band to discover high-energy transients and to monitor variable objects. To realize these objectives, EP is equipped with a Wide-filed X-ray Telescope (WXT) which applies the micro-pore lobster-eye optics. Seward et.al 1973 first pointed out that low-energy electrons could cause serious background problem for soft X-ray instrument. We will present the impact of such low-energy electrons on the background of WXT based on Geant4 simulations. We will also introduce the magnetic diverter developed based on this investigation.
Dr DONGHUA ZHAO (National Astronomical Observatories, Chinese Academy of Sciences) Chen Zhang (National Astronomical Observatories,CAS) Weimin Yuan (National Astronomical Observatories,CAS)