[XOPTp-03] Development of high-precision electroformed Wolter mirror for X-ray telescope
We newly developed the figure correction apparatus for the master mandrel to improve the figure accuracy of Wolter mirror equipped as imaging optics in FOXSI-4 project. The imaging performance of Wolter mirror fabricated with the mandrel was evaluated at BL29XU, SPring-8. HPD of EEF was 4 arcsec and 17 arcsec when X-ray of 12 keV was applied to the machining area, and the non-machining area, respectively.
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