The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Geraldes, R.R. AU - Claudiano, G.V. AU - Ferreira, V.Z. AU - Sanfelici, L. AU - Sikorski, A. AU - Souza, M.S. AU - Tolentino, H.C.N. AU - Volpe, L.M. AU - Westfahl Jr., H. ED - Schaa, Volker RW ED - Tavakoli, Keihan ED - Tilmont, Manuel TI - The Design of Exactly-Constrained X-Ray Mirror Systems for Sirius 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 - The first set of Sirius beamlines is expected to start operating in early 2019. Regarding X-ray mirror sys-tems, a single design concept has been possible thanks to the standardization of side-bounce fixed-shape mirrors. To preserve the extreme quality of both the mirror figures and the source, the main design targets were minimizing mechanical and thermal distortions in the mirrors while maximizing mechanical and thermal stabilities. A deterministic high-resolution exactly-constrained flexure-based mirror support provides pitch tuning within 100 nrad and resonances above 150 Hz, while dealing with clamping and thermal ex-pansion effects. The adopted cooling strategy was indirect cryocooling via cryostats, drastically minimiz-ing thermal gradients and distortions in the mirrors, decoupling vibration sources and simplifying cooling circuits. Finally, a 5-degree-of-freedom granite bench, based on high-resolution levellers and air-bearing solutions, support the vacuum chamber, on which the internal mechanics is stiffly mounted. The specifica-tions, design and partial results are presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 173 EP - 178 KW - vacuum KW - alignment KW - operation KW - coupling KW - feedback DA - 2018/12 PY - 2018 SN - 978-3-95450-207-3 DO - 10.18429/JACoW-MEDSI2018-WEOAMA04 UR - http://jacow.org/medsi2018/papers/weoama04.pdf ER -