Author: Baurac, S.
Paper Title Page
MOPVA143 Trim Tuning of SPS-Series DQW Crab Cavity Prototypes 1187
 
  • S. Verdú-Andrés, J. Skaritka, Q. Wu
    BNL, Upton, Long Island, New York, USA
  • S. Baurac, C.H. Boulware, T.L. Grimm, J.A. Yancey
    Niowave, Inc., Lansing, Michigan, USA
  • W.A. Clemens, E.A. McEwen, H. Park
    JLab, Newport News, Virginia, USA
  • H. Park
    ODU, Norfolk, Virginia, USA
  • A. Ratti
    LBNL, Berkeley, California, USA
  • A. Ratti
    SLAC, Menlo Park, California, USA
 
  Funding: Work partially supported by US DOE via BSA LLC contract No.DE-AC02-98CH10886 and by the US LARP program.
The final steps in the manufacturing of a superconducting RF cavity involve careful tuning before the final welds to match the target frequency as fabrication tolerances may introduce some frequency deviations. The target frequency is chosen based on analysis of the shifts induced by remaining processing steps including acid etching and cool down. The baseline fabrication of a DQW crab cavity for the High Luminosity LHC (HL-LHC) envisages a first tuning before the cavity subassemblies are welded together. To produce a very accurate final result, subassemblies are trimmed to frequency in the last machining steps, using a clamped cavity assembly for RF measurements. This paper will describe the trim tuning of one of the SPS prototype DQW crab cavities fabricated by Niowave.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPVA143  
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