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TY - CONF AU - Lee, H.-G. AU - Jeong, S.-H. AU - Jung, Y.-G. AU - Kang, H.-S. AU - Kim, D.E. AU - Kim, K.W. AU - Lee, S.B. AU - Na, D.H. AU - Oh, B.G. AU - Park, K.-H. AU - Suh, H.S. AU - Suh, Y.J. ED - Petit-Jean-Genaz, Christine ED - Kim, Dong Eon ED - Kim, Kyung Sook ED - Ko, In Soo ED - Schaa, Volker RW TI - Technical Overview of Cavity BPM Mover for PAL XFEL J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016 C1 - Busan, Korea T2 - International Particle Accelerator Conference T3 - 7 LA - english AB - Pohang Accelerator Laboratory(PAL) has been developing a SASE X-ray Free Electron Laser based on 10 GeV linear accelerator. The cavity BPM mover was developed to be used in the intersections of the Undulator Systems. The main specifications include submicron repeatability for a 50 kg cavity BPM adjusting system within compact dimensions and a ±1.5 mm stroke in the vertical and horizontal direction. Compact linear motion guide based on 5-phase stepping motors have been chosen. A closed-loop control system has been developed to achieve this repeatability. For the feedback, one digital probe sensor for each axis was used. Mechanical switches are used to limit movement. In addition, hard-stops are included for emergency. In this report, we describe the design of the stages used for precise movement and results of mechanical measurements including reproducibility will be reported. PB - JACoW CP - Geneva, Switzerland SP - 2395 EP - 2397 KW - cavity KW - controls KW - undulator KW - operation KW - EPICS DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-WEPMR053 UR - http://jacow.org/ipac2016/papers/wepmr053.pdf ER -