Schedule 0 2:00 PM - 2:15 PM [XOPT4-03] Ultraprecise fabrication of X-ray mirrors for XFEL sub-10 nm focusing system based on Wolter type III geometry *Takato Inoue1, Jumpei Yamada2, Satoshi Matsuyama1, Nami Nakamura1, Taito Osaka2, Hirokatsu Yumoto3, Takahisa Koyama3, Haruhiko Ohashi3, Makina Yabashi2,3, Tetsuya Ishikawa2, Kazuto Yamauchi1 (1. Osaka University, 2. RIKEN SPring-8 Center, 3. Japan Synchrotron Radiation Research Institute)