In a particle beam radiation apparatus 100, a control section 2 renders location information of electro magnets 1 (1A, 1B) obtained from cameras 10 (10-1, 10-2….10-n) in an initial alignment be stored in a memory section 3 as position information of reference location, and based on the location information of the reference location that is stored in the memory section 3, obtains a displacement amount from the location information of the electro magnets 1(1A, 1B) obtained via the cameras 10(10-1, 10-2….10-n) when re-aligning is performed.在粒子線照射設備100中,控制部2係使於最初的對準時藉由攝影機10(10-1、10-2、…、10-n)所取得之電磁鐵1(1A、1B)的位置資訊作為基準位置的位置資訊而記憶於記憶部3,且根據記憶於記憶部3之基準位置的位置資訊,從再對準時經由攝影機10(10-1、10-2、…、10-n)所取得之電磁鐵1(1A、1B)的位置資訊取得位移量。1A、1B‧‧‧電磁鐵2‧‧‧控制部3‧‧‧記憶部10-1、10-2、…、10-n‧‧‧攝影機11A、11B‧‧‧致動器100‧‧‧粒子線照射設備
