Author: Lam, B.
Paper Title Page
THPHA146 LCLS-II Cryomodule and Cryogenic Distribution Control 1729
  • K.J. Mattison, M. Boyes, C. Cyterski, D. Fairley, B. Lam
    SLAC, Menlo Park, California, USA
  • C. Hovater
    JLab, Newport News, Virginia, USA
  • J.A. Kaluzny, A. Martinez
    Fermilab, Batavia, Illinois, USA
  LCLS-II is a superconducting upgrade to the existing Linear Coherent Light Source at the SLAC National Accelerator Laboratory. Construction is underway with a planned continuous wave beam rate of up to 1 MHz. Two cryogenic plants provide helium to a distribution system, and 37 cryomodules with superconducting cavities will operate with Liquid helium at 2.2K. The cryomodules and distribution system is controlled with networked PLC's and EPICS as an integrated system that work in concert for controlling valves, pressure, flow, and temperature. Interlocks and critical process information is communicated with the Low Level Radio Frequency, vacuum, and magnet systems. Engaging the controls community proved vital in advancing the controls architecture from a conventional design to a centralized, reliable, and cost-effective distributed platform.  
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