Irradiating system including a target-holder mounting in a radiation-protection enclosure and a device for deflecting an irradiation beam

A target irradiation system, comprising:

• a particle accelerator configured to emit an irradiation beam along an axis;
• a target holder configured to receive a target that is to be irradiated;
• a target holder mounting that is positioned outside the particle accelerator facing the irradiation beam and that is fixed relative to the particle accelerator,
• the target holder mounting comprising at least two ports axially offset relative to the axis of the irradiation beam,
• at least one port of the at least two ports being configured to receive the target holder that is configured to receive the target that is to be irradiated;
• a radiation protection enclosure surrounding the target holder mounting,
• the particle accelerator being positioned outside the enclosure,
• the radiation protection enclosure comprising an alternating arrangement of at least one layer comprising a first material and at least one layer comprising a hydrogen-rich material comprising a neutron poison,
• the radiation protection enclosure having a wall thickness less than 100 cm;
• and
• a deflection device that is positioned in the radiation protection enclosure and configured to deviate the irradiation beam towards the at least one port of the at least two ports of the target holder mounting receiving the target holder in which the target to be irradiated is inserted.