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Title: High power impulse magnetron sputtering of thin films for superconducting RF cavities
Authors: Wilde, S.
Valizadeh, R.
Malyshev, O.B.
Barradas, N.P.
Alves, E.
Stenning, G.B.G.
Hannah, A.
Pattalwar, S.
Chesca, Boris
Issue Date: 2015
Publisher: JACoW © the authors
Citation: WILDE, S. ... et al., 2015. High power impulse magnetron sputtering of thin films for superconducting RF cavities. IN: Laxdal, R. Thomson, J. and Schaa, V.R.W. (eds.) Proceedings of the 17th International Conference on RF Superconductivity, pp. 647 - 650.
Abstract: The production of superconducting coatings for radio frequency cavities is a rapidly developing field that should ultimately lead to acceleration gradients greater than those obtained by bulk Nb RF cavities. The use of thin films made from superconductors with thermodynamic critical field, Hc>Hn/cb, allows the possibility of multilayer superconductor – insulator – superconductor (SIS) films and also accelerators that could operate at temperatures above the 2 K typically used. SIS films theoretically allow increased acceleration gradient due to magnetic shielding of underlying superconducting layers [1] and higher operating temperature can reduce cost [2]. High impulse magnetron sputtering (HiPIMS) and pulsed DC magnetron sputtering processes were used to deposit NbN and NbTiN thin films onto Si(100) substrate. The films were characterised using scanning electron microscopy (SEM), x-ray diffraction (XRD), Rutherford back-scattering spectroscopy (RBS) and a four point probe.
Description: This is a conference paper. SRF2015 was organized by TRIUMF and held at the Whistler Convention Centre, BC, Canada, September 13–18, 2015.
Version: Published
URI: https://dspace.lboro.ac.uk/2134/22364
Publisher Link: http://accelconf.web.cern.ch/AccelConf/SRF2015/papers/tupb040.pdf
ISBN: 978-3-95450-178-6
Appears in Collections:Conference Papers (Physics)

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