J-PARC linac and RCS – operational status and upgrade plan to 2 MW. - Yamamoto, Kazami; Moriya, Katsuhiro; Okita, Hidefumi; Yamada, Ippei; Chimura, Motoki; Saha, Pranab Kumar; Shobuda, Yoshihiro; Tamura, Fumihiko; Yamamoto, Masanobu; Morishita, Takatoshi; Hotchi, Hideaki; Liu, Yong (Journal of Neutron Research, 2024)