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%\cite{Furukawa:IPAC2017-TUPAB004} \bibitem{Furukawa:IPAC2017-TUPAB004} K. Furukawa, M. Akemoto, D.A. Arakawa, Y. Arakida, H. Ego, A. Enomoto, \emph{et al.}, % K. Furukawa, M. Akemoto, D.A. Arakawa, Y. Arakida, H. Ego, A. Enomoto, Y. Enomoto, S. Fukuda, Y. Funahashi, T. Higo, H. Honma, N. Iida, M. Ikeda, H. Kaji, K. Kakihara, T. Kamitani, H. Katagiri, M. Kawamura, M. Kurashina, S. Matsumoto, T. Matsumoto, H. Matsushita, S. Michizono, K. Mikawa, T. Miura, F. Miyahara, H. Nakajima, K. Nakao, T. Natsui, M. Nishida, Y. Ogawa, Y. Ohnishi, S. Ohsawa, F. Qiu, I. Satake, D. Satoh, M. Satoh, Y. Seimiya, A. Shirakawa, H. Sugimoto, H. Sugimura, T. Suwada, T. Takatomi, T. Takenaka, M. Tanaka, N. Toge, Y. Yano, K. Yokoyama, M. Yoshida, R. Zhang, and X. Zhou, % K. Furukawa \emph{et al.}, \textquotedblleft{Progress of 7-GeV SuperKEKB Injector Linac Upgrade and Commissioning}\textquotedblright, % in \emph{Proc. IPAC2017}, pp. 1300--1303, % in \emph{Proc. IPAC2017}, Copenhagen, Denmark, May 2017, paper TUPAB004, pp. 1300--1303, in \emph{Proc. 8th Int. Particle Accelerator Conf. (IPAC'17)}, Copenhagen, Denmark, May 2017, paper TUPAB004, pp. 1300--1303, % ISBN: 978-3-95450-182-3, \url{http://jacow.org/ipac2017/papers/tupab004.pdf}, \url{https://doi.org/10.18429/JACoW-IPAC2017-TUPAB004}, 2017.