The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{ko:fel2019-tup017} \bibitem{ko:fel2019-tup017} J.H. Ko and H.-S. Kang, \textquotedblleft{Terahertz FEL Simulation in PAL XFEL}\textquotedblright, % --- abbreviated form (published paper) - JACoW template Feb 2018 --- in \emph{Proc. FEL'19}, Hamburg, Germany, Aug. 2019, pp. 77--79. \url{doi:10.18429/JACoW-FEL2019-TUP017} % --- additional material -ISSN/ISBN-- % ISBN: 978-3-95450-210-3, ISSN: ""