The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
H. Sakai et al., “KEK ERL SRF Operation Experience”, presented at the 63th ICFA Advanced Beam Dynamics Workshop on Energy Recovery Linacs (ERL'19), Berlin, Germany, Sep. 2019, paper TUCOYBS01, unpublished.