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TY - CONF AU - Geraldes, R.R. AU - Caliari, R.M. AU - Moreno, G.B.Z.L. AU - Ronde, M.J.C. AU - Ruijl, T.A.M. AU - Schneider, R.M. ED - Casas, Joan ED - Schaa, Volker RW ED - Costa, Isidre ED - López, David ED - Prieto, Montserrat TI - Mechatronics Concepts for the New High-Dynamics DCM for Sirius J2 - Proc. of MEDSI2016, Barcelona, Spain, 11-16 September 2016 CY - Barcelona, Spain T2 - Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation Conference T3 - 9 LA - english AB - The monochromator is known to be one of the most critical optical elements of a synchrotron beamline. The new 4th generation machines, with emittances in the range of order of 100 pm rad, require even higher stability performances, in spite of the still conflicting factors such as high power loads, power load variation, and vibration sources. A new high-dynamics DCM is under development at LNLS for the future X-ray undulator and superbend beamlines of Sirius. Aiming at inter-crystal stability of a few tens of nrad and considering the limitations of the current DCM implementations, several aspects of DCM engineering are being revisited. The system concept is chosen such that a control bandwidth in the order of 200 to 300 Hz can be achieved. This requires well-designed system dynamics, which can be realized by applying a fundamentally different architecture than that used in common DCM designs, based on principles used in ultra-precision systems for semiconductor manufacturing. As a result, known disturbances can be attenuated or suppressed, and internally excited modes can be effectively handled. The mechatronics concepts and analyses, including the metrological details, are shown. PB - JACoW Publishing CP - Geneva, Switzerland SP - 44 EP - 47 KW - ion KW - controls KW - synchrotron KW - alignment KW - resonance DA - 2017/06 PY - 2017 SN - 978-3-95450-188-5 DO - doi:10.18429/JACoW-MEDSI2016-MOPE19 UR - http://jacow.org/medsi2016/papers/mope19.pdf ER -