Author: Lee, H.M.
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THPMY028 Technical Overview of the PAL-XFEL Conventional Facility 3715
 
  • I. Mok, M.S. Hwang, T.-H. Kang, K.W. Kim, K.R. Kim, S.H. Kim, S.N. Kim, Y. C. Kim, B.H. Lee, H.M. Lee, M.S. Lee, B.I. Moon, K.W. Seo, C.H. Son, C.W. Sung, J. Yang
    PAL, Pohang, Republic of Korea
  • Y.C. Kim, J.H. Lee
    Haenglim Architecture & Engineering Co. Ltd, Seoul, Republic of Korea
  • I.S. Ko
    POSTECH, Pohang, Kyungbuk, Republic of Korea
  • S.W. Yong
    Posco Engineering & Construction., Ltd., Gyeongsangbuk-do, Republic of Korea
 
  Pohang Accelerator Laboratory (PAL) has finished construction of a 1,110m long 10GeV X-ray free electron laser (XFEL) linear accelerator building in FY2015. In order to secure high-sensitive of XFEL accelerating devices, more advanced and well proven technologies were adopted in the design of the building. These are the ground improvement underneath the tunnel and tunnel structure itself against the possible ground deformation, air conditioning system to maintain the temperature and humidity in the tolerable ranges and architectural zoning. In this paper we describe the features of design and construction of the XFEL accelerator building.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMY028  
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THPMY029 Technical Overview of the PAL-XFEL Low-Conductivity Water Cooling System 3718
 
  • B.H. Lee, H.-G. Kim, K.W. Kim, K.R. Kim, S.H. Kim, Y. C. Kim, H.M. Lee, M.S. Lee, H. Matsumoto, I. Mok, C.W. Sung, J. Yang
    PAL, Pohang, Republic of Korea
  • J.H. Jeon
    Taeyoung, Seoul, Republic of Korea
  • K.T. Kim
    HMT, Pohang, Republic of Korea
  • I.S. Ko
    POSTECH, Pohang, Kyungbuk, Republic of Korea
 
  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.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMY029  
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