<?xml version="1.0" encoding="UTF-8"?> <xml> <records> <record> <contributors> <authors> <author>Castilla, Alejandro</author> <author>Ben-Zvi, Ilan</author> <author>Burt, Graeme</author> <author>Calaga, Rama</author> <author>Capatina, Ofelia</author> <author>Dr Schirm, Karl-Martin</author> <author>Hernández-Chahín, Karim</author> <author>Macpherson, Alick</author> <author>Mitchell, James</author> <author>Shipman, Nicholas</author> <author>Turaj, Katarzyna</author> </authors> </contributors> <titles> <title>First RF Performance Results for the DQW Crab Cavities to be Tested in the CERN SPS</title> <secondary-title/> </titles> <doi>10.18429/JACoW-IPAC2017-MOPVA095</doi> <pages>MOPVA095</pages> <volume/> <number/> <keywords> <keyword>cavity</keyword> <keyword>SRF</keyword> <keyword>monitoring</keyword> <keyword>operation</keyword> <keyword>cryomodule</keyword> </keywords> <dates> <year>2017</year> <pub-dates> <date>2017</date> </pub-dates> </dates> <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.</abstract> </record> </records> </xml>