Development of X-ray optics for the solar flare sounding rocket FOXSI-4: ray-tracing simulation

We have been developing X-ray optics on board FOXSI-4 and constructing our original ray-tracing simulator to quantitatively understand their performances. The simulator is essential to create response functions for analyzing actual observation data. Currently, we have confirmed the energy dependence of the absolute value of the on-axis effective area, as well as the relative values as a function of an off-axis angle and the consistency with actual data in the intensity distribution. Furthermore, the simulator was also used to determine design parameters in our stray light blocker system. In my poster, the details will be reported.