Experimental results on the characterization of the linear and non-linear microwave properties of niobium film produced by UHV cathodic arc deposition are presented. Surface impedance Zs as a function of RF field and intermodulation distortion (IMD) measurement have been carried out by using a dielectrically loaded resonant cavity operating at 7 GHz. The experimental data show that these samples have a lower level of intrinsic non-linearities at low temperature and low circulating power in comparison with Nb samples grown by sputtering. These results make UHV cathodic arc deposition a promising technique for the improvement of RF superconducting cavities for particle accelerators
Catani, L., Cianchi, A., Lorkiewicz, J., Tazzari, S., Langner, J., Strzyzewski, P., et al. (2006). Cathodic arc grown niobium films for RF superconducting cavity applications. PHYSICA. C, SUPERCONDUCTIVITY, 441, 130-133 [doi:10.1016/j.physc.2006.03.028].
Cathodic arc grown niobium films for RF superconducting cavity applications
CIANCHI, ALESSANDRO;
2006-01-01
Abstract
Experimental results on the characterization of the linear and non-linear microwave properties of niobium film produced by UHV cathodic arc deposition are presented. Surface impedance Zs as a function of RF field and intermodulation distortion (IMD) measurement have been carried out by using a dielectrically loaded resonant cavity operating at 7 GHz. The experimental data show that these samples have a lower level of intrinsic non-linearities at low temperature and low circulating power in comparison with Nb samples grown by sputtering. These results make UHV cathodic arc deposition a promising technique for the improvement of RF superconducting cavities for particle acceleratorsQuesto articolo è pubblicato sotto una Licenza Licenza Creative Commons
