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TY - UNPB AU - Li, M. AU - Gao, L. AU - Han, H. AU - Han, Q. AU - Liu, X. AU - Tang, S. ED - Schaa, Volker RW ED - Tavakoli, Keihan ED - Tilmont, Manuel TI - R&D of Mirror Bending Techniques in BSRF J2 - Proc. of MEDSI2018, Paris, France, 25-29 June 2018 C1 - Paris, France T2 - Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation T3 - 10 LA - english AB - High precision bending technology is development at Beijing Synchrotron Radiation Facility. We adopted two independent bending moment and variable width mirror geometry design, and no gravity compensation system, and use four rollers structure in long mirror bender and a special flexible hinge structure in short mirror bender. We test the benders' performance by our Flag-type LTP and get sub-200nrad RMS elliptical bending surface shape accuracy in full range, with 72h stability: 66nrad RMS for long mirror and 6nrad RMS for short mirror. PB - JACoW Publishing CP - Geneva, Switzerland ER -