Operation
- A vacuum system controls the pressure inside the vacuum vessel.
- The electric energy required for a TJ-II discharge is obtained from a flywheel generator.
- The coils are cooled by means of a cooling system.
- An extensive set of systems is available to perform plasma wall conditioning.
- Two movable limiters can be used to limit the plasma.
- A biasing probe can be used to apply a bias potential at the edge.
- A mechanical paddle is used to suppress runaway electrons during current ramp-up and ramp-down.
Heating and fuelling
TJ-II vacuum vessel and the two NBI injectors. Left: NBI1; right: NBI2
- Gas puff
- Electron Cyclotron Resonant Heating (ECRH)
- Neutral Beam Injection (NBI)
- Electron Bernstein Wave Heating (EBWH)
- Pellet injector (PI)
Control and data acquisition
Passive diagnostics
- Magnetics
- Halpha monitors
- Electron Cyclotron Emission
- Soft X-rays
- Multifilter electron temperature diagnostic
- Bolometry
- Spectroscopy
- Charge exchange spectroscopy
- Compact Neutral Particle Analyzer
- Fast ion loss probe
- Fast camera
Active diagnostics