Patent ID: 8374306

Claim:
An isotope production system comprising: a cyclotron including a magnet yoke that surrounds an acceleration chamber, the cyclotron configured to direct a charged-particle beam from the acceleration chamber through the magnet yoke; and a target system located adjacent to the magnet yoke, the target system configured to hold a target material at a target location, the target location being outside of the magnet yoke such that the charged-particle beam is incident upon the target material outside of the magnet yoke, the target system including a radiation shield that encloses the target location and is configured to attenuate neutrons that are emitted from the target material; and a beam passage extending from the acceleration chamber through the magnet yoke and the radiation shield to the target location, the beam passage being at least partially formed by the magnet yoke and the radiation shield of the target system; wherein the magnet yoke has an exterior surface that forms a shield-acceptance cut-out, the beam passage extending through the magnet yoke from the acceleration chamber and into the shield-acceptance cut-out, wherein a portion of the radiation shield is shaped to fit within the shield-acceptance cut-out of the magnet yoke, the portion of the radiation shield extending out of the shield-acceptance cut-out toward the target location.