An ITER-DMV prototype for 100 bar, D = 80 mm, opening time 3.5 ms, is ready for fabrication.
The vacuum part is sealed against the working gas by stainless steel bellows for 110 bar.
The conical Laval gas outlet allows maximal mass flow rate.
The eddy current drive turn ratio was optimized for low tilting moment.
Polyimide is used for the head sealing, the decelerator and for the bearing of the guide tube.