%\cite{Wang:FEL2015-TUP070} \bibitem{Wang:FEL2015-TUP070} L.~Wang, A.L.~Benwell, A.~Brachmann, W.S.~Colocho, F.-J.~Decker, Z.~Huang, \emph{et al.}, % L. Wang \emph{et al.}, \textquotedblleft{Energy Jitter Minimization at LCLS}\textquotedblright, % in \emph{Proc. FEL2015}, TUP070, pp. 523--529, % in \emph{Proc. FEL2015}, Daejeon, Republic of Korea, August 2015, paper TUP070, pp. 523--529, in \emph{Proc. 37th International Free Electron Laser Conference (FEL2015)}, Daejeon, Republic of Korea, August 2015, paper TUP070, pp. 523--529, ISBN: 978-3-95450-134-2, \url{http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/tup070.pdf}, doi:10.18429/JACoW-FEL2015-TUP070, 2015.