Author: D'Ewart, J.M.
Paper Title Page
MOPAB149 Design of LCLS-II ATCA BPM System 477
 
  • A. Young, R. Claus, J.M. D'Ewart, J.C. Frisch, G. Haller, R.T. Herbst, S. L. Hoobler, U. Legat, J.J. Olsen, R. Ruckman, L. Sapozhnikov, S.R. Smith, T. Straumann, J.A. Vásquez, M. Weaver, E. Williams, C. Xu
    SLAC, Menlo Park, California, USA
 
  Funding: Work supported by U.S. Department of Energy under Contract Numbers DE-AC02-06CH11357
SLAC's LCLS-II is a next generation X-ray FEL that will use a CW 4 GeV superconducting linac with nominal bunch spacing of 1us will deliver both soft and hard x-ray FEL to users. In order to achieve the required performance, the SLAC Technical Innovation Directorate has developed a common hardware and firmware platform for beam instrumentation based on the ATCA crate format. We have designed a stripline and cavity BPM system based on this platform that is capable of measuring the beam position at full beam rate. The system will have a dynamic range between 1 pC to 300 pC. This paper will discuss the design of the BPM electronics, overall architecture and performance on LCLS-I.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB149  
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THPVA152 Performance of ATCA LLRF System at LCLS 4817
 
  • J.M. D'Ewart, J.C. Frisch, B. Hong, K.H. Kim, J.J. Olsen, D. Van Winkle
    SLAC, Menlo Park, California, USA
 
  Funding: Work supported by Department of Energy contract DE-AC02-76SF00515.
The low level RF control for the SLAC LINAC is being upgraded to provide improved performance and maintainability. The new LLRF system is based on the SLAC ATCA common platform hardware. RF control is achieved through a high performance FPGA based DDS/DDC system. The signal processing is designed to be phase insensitive, allowing the use of modest performance on-board digitizer clock and LO. The prototype LLRF control system was installed and used to operate RF station 28-2 in LCLS-I. Design details and prototype performance results will be presented.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA152  
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