Electron-beam welding of the grill flanges of the FTU additional heating system
The R&D programme of the fusion sector of ENEA (Italian Agency for New Technologies, Energy and Environment) Frascati is mainly based on experiments on the Frascati Tokamak Upgrade (FTU) machine. The FTU is a medium-high magnetic field (8 T) tokamak with a radio-frequency (RF) additional heating system (8 MW, 8 GHz) that can heat the plasma to temperatures necessary in fusion experiments. The RF power is coupled to the plasma by a coupling structure consisting of three grills, each formed of an array of waveguides welded at the terminal flanges by an electron-beam technique. This solution allows highly accurate dimensions and optimum clean-surface conditions of the welded copper joints.
Bibliographic Reference: Paper presented: Second European Conference on Joining Technology, Firenze (IT), May 16-18, 1994
Availability: Available from (1) as Paper EN 38125 ORA
Record Number: 199410298 / Last updated on: 1994-11-28
Original language: en
Available languages: en