The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{wang:ipac2021-wepab031} \bibitem{wang:ipac2021-wepab031} G. Wang, V. Litvinenko, and J. Ma, \textquotedblleft{Frequency Dependence of Plasma Cascade Amplification}\textquotedblright, % --- abbreviated form (published paper) - JACoW template Feb 2018 --- in \emph{Proc. IPAC'21}, Campinas, SP, Brazil, May 2021, pp. 2672--2674. \url{doi:10.18429/JACoW-IPAC2021-WEPAB031} % --- additional material -ISSN/ISBN-- % ISBN: 978-3-95450-214-1, ISSN: 2673-5490