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TY - CONF AU - Lee, B.H. AU - Jeon, J.H. AU - Kim, H.-G. AU - Kim, K.R. AU - Kim, K.T. AU - Kim, K.W. AU - Kim, S.H. AU - Kim, Y. C. AU - Ko, I.S. AU - Lee, H.M. AU - Lee, M.S. AU - Matsumoto, H. AU - Mok, I. AU - Sung, C.W. AU - Yang, 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 the PAL-XFEL Low-Conductivity Water Cooling System 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) started operation of an X-ray Free Electron Laser (XFEL) based on 10GeV linear accelerator in FY2015. For accurate temperature control of the various XFEL accelerator devices, a low-conductivity water (LCW) cooling system were installed. The LCW pump station generates LCW controlling the temperature variation within ±0.1°C. The LCW is supplied to klystrons including modulators and various control devices. On the other hand, the precision temperature controlled water to minimize temperature variation down to ±0.02°C. This water is supplied to accelerating columns, wave guide and SLED. Therefore, this paper shows the design, construction and operation of the LCW cooling system. PB - JACoW CP - Geneva, Switzerland SP - 3718 EP - 3720 KW - controls KW - simulation KW - operation KW - laser KW - ion DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-THPMY029 UR - http://jacow.org/ipac2016/papers/thpmy029.pdf ER -