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https://doi.org/10.18429/JACoW-IPAC2017-MOPVA095
Title First RF Performance Results for the DQW Crab Cavities to be Tested in the CERN SPS
Authors
  • A. Castilla, R. Calaga, O. Capatina, K.M. Dr. Schirm, K.G. Hernández-Chahín, A. Macpherson, N.C. Shipman, K. Turaj
    CERN, Geneva, Switzerland
  • I. Ben-Zvi
    BNL, Upton, Long Island, New York, USA
  • G. Burt, J.A. Mitchell
    Lancaster University, Lancaster, United Kingdom
  • K.G. Hernández-Chahín
    DCI-UG, León, Mexico
  • N.C. Shipman
    Cockcroft Institute, Lancaster University, Lancaster, United Kingdom
  • N.C. Shipman
    UMAN, Manchester, United Kingdom
Abstract As part of the High Luminosity LHC (HL-LHC) project strategy, crab cavity correctors shall be installed around CMS and ATLAS experiments of the LHC. To accommodate the different crossing angle planes, two distinct cavity designs have been selected: the RF Dipole (RFD) and the Double Quarter Wave resonator (DQW). CERN has fabricated two double quarter wave resonators (DQW_{S}PS), for validation with a proton beam at the CERN SPS accelerator. Standard superconducting rf surface preparation protocols have been applied to the two bulk niobium cavities, followed by cryogenic testing in a vertical cryostat at CERN's SM18 facility. The performance results obtained after the first bare cavity tests for cavities DQW_{S}PS₀01 and DQW_{S}PS₀02 are shown in this paper, and include Q0 vs Vt curves, Lorentz Force Detuning (LFD) analyses and pressure sensitivity of a higher order mode.
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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, SRF, monitoring, operation, cryomodule
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
Copyright © 2017 by JACoW, Geneva, Switzerland     CC-BY Creative Commons License
cc Creative Commons Attribution 3.0