Containment structures and port configurations

This article describes the DEMO cryostat, vacuum vessel, and tokamak building as well system configurations to integrate main in-vessel components auxiliary systems developed during Pre-Conceptual Design Phase. The vessel is primary component for radiation shielding containment of tritium other radioactive material. Various required operate plasma are integrated in its ports. together with external magnetic coils located inside even larger cryostat that has function provide a enable operation superconducting cryogenic condition. surrounded by thick concrete structure: bioshield. It protects areas from neutron gamma emitted tokamak. layout aligned VV ports implementing floors separate rooms, so-called port cells, can be sealed secondary confinement when opened maintenance. torus-shaped have allow replacement but also incorporate limiters heating diagnostic systems. divertor replaced through horizontal at lower level, breeding blanket (BB) upper vertical pipe work these routed To facilitate BB, it divided into large segments. Their mechanical support relies on vertically clamping them combination obstructed thermal expansion radial pre-compression due ferromagnetic force acting structural material toroidal field.