A blanket 50 includes a plurality of module assemblies 50A disposed in a circumferential direction Dr around a vertical center line C1 of a helical coil 30. Each of the plurality of module assemblies 50A includes a plurality of blanket modules 51. Each blanket module 51 is movable upward from a gap A formed in the helical coil 30. A vacuum vessel 20 includes a movable cover 21 that covers an upper side of the helical coil 30 and the 10 plurality of module assemblies 50A and is openable and closable. The movable cover 21 is configured such that the whole movable cover 21 moves integrally when the movable cover 21 is opened and closed. Such a structure enables the blanket to be maintained and replaced more efficiently.

Techniques are described for automatically removing and replacing components, including a vacuum vessel, from a tokamak. The inventors have recognized that schemes for automatically removing and replacing components from a tokamak should preferably be simple (e.g., using proven equipment to perform a series of non-mechanically complex tasks) and have a very low risk of damaging components. Techniques described herein may include splitting a tokamak into multiple pieces, separating the pieces, and removing the now separate pieces of the vacuum vessel from within the pieces of the tokamak. A new vacuum vessel can be inserted in multiple pieces and the tokamak rejoined to complete the replacement process.

Techniques are described for automatically removing and replacing components, including a vacuum vessel, from a tokamak. The inventors have recognized that schemes for automatically removing and replacing components from a tokamak should preferably be simple (e.g., using proven equipment to perform a series of non-mechanically complex tasks) and have a very low risk of damaging components. Techniques described herein may include splitting a tokamak into multiple pieces, separating the pieces, and removing the now separate pieces of the vacuum vessel from within the pieces of the tokamak. A new vacuum vessel can be inserted in multiple pieces and the tokamak rejoined to complete the replacement process.

A renewable wall of a fusion reactor chamber is disclosed. In some embodiments of the disclosed technology, a fusion reactor device comprises a fusion reactor chamber including an inner wall that is at least partially made of a wall-forming aggregate to be exposed to a heat flux in the fusion reactor chamber during a nuclear fusion reaction which decomposes into constituent pebbles upon this heat flux exposure, a material collection system structured to collect via gravity, from the inner wall of the fusion reactor, a material recovery unit connected to the material collection system to recover the decomposed wall-forming material and provide a recovered wall-forming material to a wall-forming material container, and an array of extrusion channels connected between the inner wall and the wall-forming material container to feed the recovered wall-forming material from the wall-forming material container toward the inner wall of the fusion reactor chamber.

A renewable wall of a fusion reactor chamber is disclosed. In some embodiments of the disclosed technology, a fusion reactor device comprises a fusion reactor chamber including an inner wall that is at least partially made of a wall-forming aggregate to be exposed to a heat flux in the fusion reactor chamber during a nuclear fusion reaction which decomposes into constituent pebbles upon this heat flux exposure, a material collection system structured to collect via gravity, from the inner wall of the fusion reactor, a material recovery unit connected to the material collection system to recover the decomposed wall-forming material and provide a recovered wall-forming material to a wall-forming material container, and an array of extrusion channels connected between the inner wall and the wall-forming material container to feed the recovered wall-forming material from the wall-forming material container toward the inner wall of the fusion reactor chamber.

The present disclosure is directed to stellarators or assemblies including a stellarator including removable and/or replaceable components, such as removable field shaping units and/or removable shaping coils. In some embodiments, the stellarators of the present disclosure include a toroidal sector, which includes one or more removable field shaping units.

The present disclosure is directed to stellarators or assemblies including a stellarator including removable and/or replaceable components, such as removable field shaping units and/or removable shaping coils. In some embodiments, the stellarators of the present disclosure include a toroidal sector, which includes one or more removable field shaping units.

Techniques are described for automatically removing and replacing components, including a vacuum vessel, from a tokamak. The inventors have recognized that schemes for automatically removing and replacing components from a tokamak should preferably be simple (e.g., using proven equipment to perform a series of non-mechanically complex tasks) and have a very low risk of damaging components. Techniques described herein may include splitting a tokamak into multiple pieces, separating the pieces, and removing the now separate pieces of the vacuum vessel from within the pieces of the tokamak. A new vacuum vessel can be inserted in multiple pieces and the tokamak rejoined to complete the replacement process.

Techniques are described for automatically removing and replacing components, including a vacuum vessel, from a tokamak. The inventors have recognized that schemes for automatically removing and replacing components from a tokamak should preferably be simple (e.g., using proven equipment to perform a series of non-mechanically complex tasks) and have a very low risk of damaging components. Techniques described herein may include splitting a tokamak into multiple pieces, separating the pieces, and removing the now separate pieces of the vacuum vessel from within the pieces of the tokamak. A new vacuum vessel can be inserted in multiple pieces and the tokamak rejoined to complete the replacement process.

The present disclosure is directed to stellarators or assemblies including a stellarator including removable and/or replaceable components, such as removable field shaping units and/or removable shaping coils. In some embodiments, the stellarators of the present disclosure include a toroidal sector, which includes one or more removable field shaping units.