Rf Characterization of Superconducting Samples

At CERN a compact Quadrupole Resonator has been re-commissioned for the RF characterization of superconducting materials at 400 MHz. In addition the resonator can also be excited at multiple integers of this frequency. Besides Rs it enables determination of the maximum RF magnetic field, the thermal conductivity and the penetration depth of the attached samples, at different temperatures. The features of the resonator will be compared with those of similar RF devices and first results will be presented. Presented at : the 14 International Conference on RF Superconductivity (SRF09 BERLIN – DRESDEN) RF CHARACTERIZATION OF SUPERCONDUCTING SAMPLES* Tobias Junginger, CERN, Geneva Switzerland and MPIK Heidelberg, Germany Wolfgang Weingarten, CERN, Geneva, Switzerland Carsten Welsch, Cockcroft Institute Warrington and University of Liverpool, United Kingdom