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Title Trim Tuning of SPS-Series DQW Crab Cavity Prototypes
  • 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
Abstract 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.
Funding Work partially supported by US DOE via BSA LLC contract No.DE-AC02-98CH10886 and by the US LARP program.
Paper download MOPVA143.PDF [0.783 MB / 3 pages]
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Conference IPAC2017, Copenhagen, Denmark
Series International Particle Accelerator Conference (8th)
Proceedings Link to full IPAC2017 Proccedings
Session Posters Monday 3
Date 15-May-17   16:00–18:00
Main Classification 07 Accelerator Technology
Sub Classification T07 Superconducting RF
Keywords cavity, target, operation, simulation, controls
Publisher JACoW, Geneva, Switzerland
Editors Volker RW Schaa (GSI, Darmstadt, Germany); Gianluigi Arduini (CERN, Geneva, Switzerland); Juliana Pranke (ESS, Lund, Sweden); Mike Seidel (PSI, Villigen, Switzerland); Mats Lindroos (ESS, Lund, Sweden)
ISBN 978-3-95450-182-3
Published May 2017
Copyright © 2017 by JACoW, Geneva, Switzerland     CC-BY Creative Commons License
cc Creative Commons Attribution 3.0