Status of the RCNP cyclotron facility

The cyclotron facility at the Research Center for Nuclear Physics (RCNP), Osaka University, consisting of the AVF cyclotron built in 1973 and the ring cyclotron built in 1991, has provided the various ion beam for nuclear and elementary particle physics, nuclear chemistry, and nuclear medicine. We currently plan the intensive maintenance and large scale upgrade in fiscal year 2018 and 2019 aiming at the update of old equipments for stable operation and the upgrade of the performance. We plan the upgrade of the ion sources, the injection line, the Dee electrode, the RF system and the vacuum system intending to the increase of the beam intensity and reduction of the emittance. The upgrade of the ion sources are underway as the first step to the large scale upgrade of the cyclotron. A novel pepper pot emittance monitor which contributes the upgrade and commissioning of the ion sources is under development. We study the elements of accelerators for nuclear therapy. A neutron source for the BNCT and a scanning method for the particle-beam radiation therapy, are intensively studied in collaboration with the Medical School, Osaka University. (author)