Patent ID: 7465944

Claim:
A charged particle therapy apparatus comprising: a plurality of irradiation nozzles fixed to a plurality of irradiation rooms respectively and to which accelerated charged particle beams are introduced, a plurality of irradiation operation rooms, and a plurality of passages for allowing a person to move from the irradiation operation rooms to the irradiation rooms, wherein said apparatus further comprises: a first switch provided in each of said plurality of irradiation rooms for issuing an irradiation preparation request command requiring an irradiation preparation for charged particle beams; and a second switch provided in each of the irradiation operation rooms for issuing a beam irradiation command requiring irradiation of charged particle beams; and wherein said apparatus is configured such that when said beam irradiation command is issued from said second switch after said irradiation preparation request command has been issued from said first switch, charged particle beams are introduced to the corresponding irradiation nozzle.