Abstract: A particle beam rotational irradiation apparatus includes: a frame that supports an irradiation nozzle and rotates; an irradiation-nozzle support member that is provided on an inner-circumference side of the frame and supports the irradiation nozzle; a movable floor that has a roller movable in a circumferential direction centering on a rotation axis of the frame; and a movable-floor rail that is provided in the circumferential direction on the inner-circumference side of the frame and supports the roller; wherein the irradiation-nozzle support member and the movable floor have respective coupling portions that are attachable/detachable to/from each other in the circumferential direction centering on the rotation axis of the frame.

Abstract: Plural pairs of connection plates are placed circumferentially around a plurality of circularly-arranged electromagnets, in which the plural pairs are each a pair of two connection plates placed with a gap in a radial direction and are arranged in a longitudinal direction of the connection plates. At a portion where one of the two connection plates forming a pair and one of the adjacent two connection plates forming another pair are connected, an end portion of the one of the two connection plates forming the pair and an end portion of the one of the two connection plates forming the another pair, are configured to be bent in the radial direction so that these end portions are apart from the other one of the two connection plates forming the pair, whereby the connection plates in the pair and the connection plates in the another pair are serially connected.

Abstract: Plural pairs of connection plates are placed circumferentially around a plurality of circularly-arranged electromagnets, in which the plural pairs are each a pair of two connection plates placed with a gap in a radial direction and are arranged in a longitudinal direction of the connection plates. At a portion where one of the two connection plates forming a pair and one of the adjacent two connection plates forming another pair are connected, an end portion of the one of the two connection plates forming the pair and an end portion of the one of the two connection plates forming the another pair, are configured to be bent in the radial direction so that these end portions are apart from the other one of the two connection plates forming the pair, whereby the connection plates in the pair and the connection plates in the another pair are serially connected.

Abstract: The electromagnet support frame is for supporting an electromagnet having a trunnion pair which comprises two trunnions that are formed on mutually opposite side-faces of the electromagnet and whose central axes are matched to each other, and is characterized by including support fixtures whose number is the same as that of the trunnions and in which engaging parts are formed that are engaged with the trunnions so as to cover outer faces thereof, and a mounting frame that holds the support fixtures through vertical adjustment parts that move the fixtures in a vertical direction.

Abstract: The electromagnet support frame is for supporting an electromagnet having a trunnion pair which comprises two trunnions that are formed on mutually opposite side-faces of the electromagnet and whose central axes are matched to each other, and is characterized by including support fixtures whose number is the same as that of the trunnions and in which engaging parts are formed that are engaged with the trunnions so as to cover outer faces thereof, and a mounting frame that holds the support fixtures through vertical adjustment parts that move the fixtures in a vertical direction.

Abstract: A particle beam rotational irradiation apparatus includes: a frame that supports an irradiation nozzle and rotates; an irradiation-nozzle support member that is provided on an inner-circumference side of the frame and supports the irradiation nozzle; a movable floor that has a roller movable in a circumferential direction centering on a rotation axis of the frame; and a movable-floor rail that is provided in the circumferential direction on the inner-circumference side of the frame and supports the roller; wherein the irradiation-nozzle support member and the movable floor have respective coupling portions that are attachable/detachable to/from each other in the circumferential direction centering on the rotation axis of the frame.