Development of x-ray optics for the solar flare sounding rocket FOXSI-4: vibration test

We have been developing our original space X-ray optics by combining space- and ground-based technologies for a solar sounding rocket experiment, FOXSI-4. We completed two Flight Models (FM), soft and hard X-ray optics. Vibration tolerance is one of the most important launch environmental tolerance and thus we established our experimental setup for the two FMs. The imaging quality was evaluated before and after the vibration tests. As a result, no significant changes were detected. In addition, we checked the effect of shims needed for the angle alignment between the optics and detectors integrated into the sounding rocket. We confirmed that the shims do not affect the angle alignment significantly before and after vibration tests.