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Proceedings Article

Ray tracing simulations for the wide-field x-ray telescope of the Einstein Probe mission based on Geant4 and XRTG4

[+] Author Affiliations
Donghua Zhao, Chen Zhang, Weimin Yuan, Zhixing Ling, Shuangnan Zhang

National Astronomical Observatories (China)

Richard Willingale

Univ. of Leicester (United Kingdom)

Hua Feng, Hong Li, Jianfeng Ji, Wenxin Wang

Tsinghua Univ. (China)

Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 91444E (July 24, 2014); doi:10.1117/12.2055434
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From Conference Volume 9144

  • Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray
  • Tadayuki Takahashi; Jan-Willem A. den Herder; Mark Bautz
  • Montréal, Quebec, Canada | June 22, 2014

abstract

Einstein Probe (EP) is a proposed small scientific satellite dedicated to time-domain astrophysics working in the soft X-ray band. It will discover transients and monitor variable objects in 0.5-4 keV, for which it will employ a very large instantaneous field-of-view (60° × 60°), along with moderate spatial resolution (FWHM ∼ 5 arcmin). Its wide-field imaging capability will be achieved by using established technology in novel lobster-eye optics. In this paper, we present Monte-Carlo simulations for the focusing capabilities of EP’s Wide-field X-ray Telescope (WXT). The simulations are performed using Geant4 with an X-ray tracer which was developed by cosine (http://cosine.nl/) to trace X-rays. Our work is the first step toward building a comprehensive model with which the design of the X-ray optics and the ultimate sensitivity of the instrument can be optimized by simulating the X-ray tracing and radiation environment of the system, including the focal plane detector and the shielding at the same time. © (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Donghua Zhao ; Chen Zhang ; Weimin Yuan ; Richard Willingale ; Zhixing Ling, et al.
" Ray tracing simulations for the wide-field x-ray telescope of the Einstein Probe mission based on Geant4 and XRTG4 ", Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 91444E (July 24, 2014); doi:10.1117/12.2055434; http://dx.doi.org/10.1117/12.2055434


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