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TY - CONF AU - Lee, H.-G. AU - Han, J.H. AU - Jeong, S.-H. AU - Jung, Y.G. AU - Kang, H.-S. AU - Kim, D.E. AU - Lee, H.-S. AU - Lee, S.B. AU - Oh, B.G. AU - Park, K.-H. AU - Suh, H.S. ED - Schaa, Volker RW ED - Tavakoli, Keihan ED - Tilmont, Manuel TI - Adjusting Mechanism of Inter-Undulator Section for PAL XFEL 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 - Pohang Accelerator Laboratory (PAL) has developed a SASE X-ray Free Electron Laser based on 10 GeV linear accelerator. The inter-Undulator (IU) support section was developed to be used in the intersections of the Undulator Systems. The IU supports consist of phase shifter, quadrupole magnet with mover, beam loss monitor, cavity BPM with mover, two corrector magnets and vacuum components. The adjusting mechanism of IU Support has manual alignment system to be easily adjusting the component. The mover of quadruple magnet and cavity BPM with submicron repeatability has auto-adjusting systems with stepping motor. The mover main specifications include compact dimensions and a ±1.5 mm stroke in the vertical and horizontal direction. Linear motion guide based on 5-phase stepping motors have been chosen. This paper describes the design of the stages used for precise movement and results of mechanical measurements including reproducibility will be reported. PB - JACoW Publishing CP - Geneva, Switzerland SP - 241 EP - 244 KW - undulator KW - cavity KW - FEL KW - quadrupole KW - controls DA - 2018/12 PY - 2018 SN - 978-3-95450-207-3 DO - 10.18429/JACoW-MEDSI2018-WEPH17 UR - http://jacow.org/medsi2018/papers/weph17.pdf ER -