< Topic >Until recently, as quite it can form in the thin beam diameter where it is not, beam diameter is controlled in high accuracy, furthermore beam range and the beam lighting device which can control also the beam track and the beam lighting control method where it can control the range of the radiation field in the lighting object at high accuracy are offered.SolutionsWhile the beam maintaining convergent angle, the evacuation which becomes the traffic channel of the beam which is removed from the accelerator vis-a-vis the transport pipe which is done and the lighting object which exists in the atmosphere, in order incidence to do, with as 4 polar electromagnets and the lighting object of the beam and it is provided distance variably, making the beam pass, it decreased beam energy and the movable range shifter control beam diameter of 1 or more which where beam range is controlled it consisted of, controlled beam diameter and beam range, targeting lighting it constituted of the beam lighting device which features that the beam is made to irradiate.< Selective figure >Figure 1【課題】従来にない極めて細いビーム径に成形できるとともに、高精度にビーム径を制御し、さらにビーム飛程及びビーム軌道をも制御できるビーム照射装置及び、照射対象での照射野の範囲を高精度で制御できるビーム照射制御方法を提供する。【解決手段】加速器から取り出されたビームの輸送路となる真空排気された輸送管と、大気中に存在する照射対象に対し、ビームが収束角を維持しながら入射するようビーム径を制御する4極電磁石と、ビームの照射対象と距離可変に設けられるとともにビームを通過させてビームエネルギーを低下させビーム飛程を制御する1以上の可動レンジシフタとからなり、ビーム径及びビーム飛程を制御し、照射対象にビームを照射させることを特徴とするビーム照射装置の構成とした。【選択図】図1