NMB4.0: development of integrated nuclear fuel cycle simulator from the front to back-end Tomohiro Okamura, Ryota Katano, Akito Oizumi, Kenji Nishihara, Masahiko Nakase, Hidekazu Asano and Kenji Takeshita EPJ Nuclear Sci. Technol., 7 (2021) 19 Published online: 03 November 2021 DOI: 10.1051/epjn/2021019