@article{oai:repo.qst.go.jp:00043541,
 author = {Furukawa, Takuji and Noda, Kouji and Urakabe, Eriko and Muramatsu, Masayuki and Kanazawa, Mitsutaka and 古川 卓司 and 野田 耕司 and 新谷 恵理子 and 村松 正幸 and 金澤 光隆},
 journal = {Nuclear Instruments & Methods in Physics Research Section A},
 month = {May},
 note = {An irradiation method for spot scanning has been developed in order to provide accurate irradiation even for an irregular target shape. In spot scanning irradiation, the beam is turned off while the beam position is shifted to the next spot for precise dose management. Recently, the fast beam cut-off method, which can achieve a cut-off time of around 50 micro sec, was proposed and verified at the HIMAC synchrotron. In order to utilize such a speciality of the technique for spot scanning, the characteristics of fast beam switching were investigated while turning on/off both the transverse and longitudinal RF fields many times during a single flattop. As a result, it was verified that this technique provides more than 50 spots during a single flattop in the synchrotron operation pattern with a cut-off time of 50 ms. With an increase in a switching number, the momentum spread and the size of the extracted beam increase within the allowable range for practical usage.},
 pages = {485--495},
 title = {Characteristics of fast beam switching for spot scanning},
 volume = {503},
 year = {2003}
}