Ishi, Y. Mori, Y. Uesugi, T. JACoW Publishing Geneva, Switzerland 2673-5482 978-3-95450-212-7 10.18429/JACoW-CYCLOTRONS2022-THPO018 English 344-346 experiment target proton radiation injection Contribution to a conference proceedings 2023 2023-10 https://doi.org/10.18429/JACoW-CYCLOTRONS2022-THPO018 https://jacow.org/cyclotrons2022/papers/thpo018.pdf The current activities of FFAG in Japan will be presented as well as future projects using energy recovery internal target scheme in the FFAG ring.