%\cite{Kawase:FEL2015-TUP029} \bibitem{Kawase:FEL2015-TUP029} K.~Kawase, M.~Fujimoto, K.~Furukawa, A.~Irizawa, G.~Isoyama, R.~Kato, and K.~Kubo, % K. Kawase \emph{et al.}, \textquotedblleft{Single Picosecond THz Pulse Extraction from the FEL Macropulse using a Laser Activating Semiconductor Reflective Switch}\textquotedblright, % in \emph{Proc. FEL2015}, TUP029, pp. 430--432, % in \emph{Proc. FEL2015}, Daejeon, Republic of Korea, August 2015, paper TUP029, pp. 430--432, in \emph{Proc. 37th International Free Electron Laser Conference (FEL2015)}, Daejeon, Republic of Korea, August 2015, paper TUP029, pp. 430--432, ISBN: 978-3-95450-134-2, \url{http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/tup029.pdf}, doi:10.18429/JACoW-FEL2015-TUP029, 2015.