The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Kubo:SRF2015-MOPB009} \bibitem{Kubo:SRF2015-MOPB009} T.~Kubo, \textquotedblleft{Model of Flux Trapping in Cooling Down Process}\textquotedblright, % in \emph{Proc. SRF2015}, MOPB009, pp. 90--94, % in \emph{Proc. SRF2015}, Whistler, BC, Canada, 13-18, 2015, paper MOPB009, pp. 90--94, in \emph{Proc. 17th International Conference on RF Superconductivity (SRF2015)}, Whistler, BC, Canada, 13-18, 2015, paper MOPB009, pp. 90--94, ISBN: 978-3-95450-178-6, \url{http://srf2015.vrws.de/papers/mopb009.pdf}, \url{doi:10.18429/JACoW-SRF2015-MOPB009}, 2015.