The present invention provides a charged particle beam illumination device (1) with which a charged particle beam is illuminated upon a subject for illumination, comprising: an accelerator (2) which accelerates charged particles and emits a charged particle beam a gantry (4) in which an illumination unit which illuminates the subject for illumination with the particle beam is positioned a treatment platform (5) upon which the subject for illumination is positioned and a transportation line (6), further comprising an energy selection system (11) for adjusting the energy of the charged particle beam which is emitted from the accelerator (2), and which transports the charged particle beam from the accelerator (2) to the illumination unit (3). The transportation line (6) is formed linearly from the accelerator (2) to the gantry (4), with at least a portion of the energy selection system (11) positioned upon the gantry (4). A shield member (18) which shields a radiation beam heading toward the treatment platform (5) is disposed between the energy selection system (11) which is positioned upon the gantry (4) and the treatment platform (5).本發明提供一種帶電粒子束照射裝置,其中,具備有將帶電粒子束照射於被照射體之帶電粒子束照射裝置(1)、加速帶電粒子來射出帶電粒子束之加速器(2)、配置有對被照射體照射帶電粒子束之支架(4)、配置被照射體之治療台(5)及具有為了調整從加速器(2)射出之帶電粒子束的能量之能量選擇系統(11),且從加速器(2)向照射部(3)傳輸帶電粒子束之傳輸管線(6);傳輸管線(6)從加速器(2)到支架(4)形成為直線狀,並且能量選擇系統(11)的至少一部份配置於支架(4),在配置於支架(4)之能量選擇系統(11)與治療台(5)之間,設置有屏蔽朝向治療台(5)之放射線之屏蔽構件(18)。1‧‧‧帶電粒子束照射裝置2‧‧‧加速器3‧‧‧照射部4‧‧‧支架5‧‧‧治療台(照射台)5a‧‧‧機械手臂6‧‧‧傳輸管線7‧‧‧壁8‧‧‧真空導管9‧‧‧加速器側收斂磁鐵10‧‧‧降能器11‧‧‧能量選擇系統12‧‧‧支架側收斂磁鐵13‧‧‧第1偏轉磁鐵14‧‧‧切口15‧‧‧第2偏轉磁鐵16‧‧‧掃描磁鐵17‧‧‧第3偏轉磁鐵18‧‧‧屏蔽構件A‧‧‧患者CL‧‧‧中心軸線
