作者: Futaro Ebina , Fumiaki Noda , Satoshi Totake , Takuya Nomura , Kento Miyahara
DOI: 10.1016/J.NIMA.2019.163340
关键词: Synchrotron 、 Physics 、 Lorentz factor 、 Magnetic field 、 Momentum compaction 、 Beam (structure) 、 Computational physics 、 Particle beam 、 Momentum 、 Dispersion (chemistry)
摘要: Abstract The purpose of this research was to evaluate a dispersion function derived from fluctuation the bending magnetic field synchrotron (BM-derived dispersion) for correcting positional drift irradiated beam in synchrotron-based particle therapy systems. At exit synchrotron, BM-derived is proportional acceleration frequency (RF-derived dispersion), and proportionality constant two types dispersions depends only on momentum compaction factor Lorentz extracted theoretically. were measured at carbon-ion facility, agrees with theoretical value accuracy 16%. Correcting isocenter effectively reduces variation irradiating-beam position caused by due aftereffect.