@inproceedings{oai:repo.qst.go.jp:00054842, author = {Mizushima, Kota and Furukawa, Takuji and Shirai, Toshiyuki and Sato, Shinji and Iwata, Yoshiyuki and Katagiri, Ken and Hara, Yousuke and Noda, Koji and 水島 康太 and 古川 卓司 and 白井 敏之 and 佐藤 眞二 and 岩田 佳之 and 片桐 健 and 原 洋介 and 野田 耕司}, book = {Proceedings of IBIC2012}, month = {Oct}, note = {Short extraction called preliminary extraction has been added before irradiation in order to avoid an overshoot of the beam spill. A fast beam shutter was developed and installed in the extraction line to prevent the beam delivering to the patient during preliminary extraction. The fast shutter enables us to switch from preliminary extraction to irradiation in 100 ms, and the reliability of the beam-intensity control system was drastically improved by the preliminary extraction technique.}, pages = {143--145}, title = {RELIABLE BEAM-INTENSITY CONTROL TECHNIQUE AT THE HIMAC SYNCHROTRON}, year = {2012} }