@inproceedings{oai:repo.qst.go.jp:00078032, author = {阿部, 康志 and 山口, 由高 (RIKEN) and 上坂, 友洋(RIKEN) and Naimi, Sarah(RIKEN) and 洲嵜, ふみ(RIKEN/原研) and 長江, 大輔(RIKEN/九大) and Li, Hongfu((RIKEN/IMP) and 大甕, 舜一朗(埼玉大) and 山口, 貴之(埼玉大) and 荒川, 裕樹(埼玉大) and 猪俣, 玖美(埼玉大) and 小林, 孝彰(埼玉大) and 西室, 国光(埼玉大) and 稲田, 康人(埼玉大) and 坂上, 護(埼玉大) and 細井, 駿(埼玉大) and 横田, 健次郎(埼玉大) and 梶木, 大輔(埼玉大) and 濱川, 大貴(埼玉大) and 竇, 文博(埼玉大) and 小沢, 顕(筑波大) and 森口, 哲朗(筑波大) and 向井, もも(筑波大) and 上岡, 大起(筑波大) and 景澤, 怜央(筑波大) and 道正, 新一郎(東大CNS) and 大田, 晋輔(東大CNS) and 北村, 徳隆(東大CNS) and 増岡, 翔一朗(東大CNS) and 鈴木, 伸司(IMP) and Ge, Zhuang(IMP) and Wang, Qian(IMP) and Wang, Kailong(CMU) and Litvinov, A Yury(GSI) and 若杉, 昌徳(理研/京大化研) and Abe, Yasushi}, book = {2019年第16回日本加速器学会年会プロシーディング}, month = {Nov}, note = {We constructed the isochronous storage ring named “Rare-RI Ring (R3)” at RIKEN RI Beam Factory. Recently, we demonstrated a high-precision mass-measurement capability for the extremely short-lived and rarely-produced exotic nuclei by means of the time-of-flight based mass-spectrometry using R3. We measured one-by-one the revolution times for accepted nuclei including not only the mass-reference nucleus but also the unknown-mass nuclei. One of the massreference nuclei circulates under the isochronous condition. The momentum dependence of the revolution times of stored nuclei was corrected by using their velocities measured in the beam transport line before the injection. Consequently, the mass-to-charge ratios are proportional to the corrected revolution time, and the mass precision is ensured by the precision of the isochronism. We have introduced an event-by-event technique for the first time in the storage ring experiment to make precision mass measurement for extremely rarely produced nuclei possible. That was established with a newly developed self-triggered injection technique and an in-flight particle identification technique. Here, we report on the present status of R3.}, pages = {645--648}, title = {理研RIBFにおける稀少RIリングの現状 (2)}, year = {2019} }