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TY - CONF AU - Geraldes, R.R. AU - Caliari, R.M. AU - Moreno, G.B.Z.L. AU - Ruijl, T.A.M. AU - Sanfelici, L. AU - Saveri Silva, M. AU - Schneider, R.M. AU - Tolentino, H.C.N. AU - Westfahl Jr., H. ED - Schaa, Volker RW ED - Tavakoli, Keihan ED - Tilmont, Manuel TI - The Status of the New High-Dynamic DCM 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 monochromator is known to be one of the most critical optical elements of a synchrotron beamline, since it directly affects the beam quality with respect to energy and position. Naturally, the new 4th genera-tion machines, with their small emittances, start to bring higher stability performance requirements, in spite of factors as high power loads and variations, high radiation levels, ultra-high vacuum compatibility and vibration sources. In response to that, an innova-tive concept of a high-dynamic vertical DCM (Double Crystal Monochromator) with angular range between 3 and 60 degrees (equivalent to 2.3 to 38 keV with Si(111)) has been developed at the Brazilian Synchro-tron Light Laboratory. A highly repeatable dynamic system, with servo control bandwidth of 250 Hz, has been achieved and will be installed at Sirius macromo-lecular crystallography beamline ' MANACA ' still in 2018. The complete offline results of the in-vacuum cryocooled high-dynamic DCM, showing stability between crystals around 15 nrad RMS up to 2.5 kHz, even during the Bragg angle motion for flyscans, are presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 147 EP - 152 KW - controls KW - operation KW - vacuum KW - synchrotron KW - experiment DA - 2018/12 PY - 2018 SN - 978-3-95450-207-3 DO - 10.18429/JACoW-MEDSI2018-WEOAMA01 UR - http://jacow.org/medsi2018/papers/weoama01.pdf ER -