Beam Dynamics Home : Main Linac : Power Coupler
FEL Beam Dynamics Group - Main Linac - Power Coupler
The coaxial power input coupler for the XFEL Linac cavities.
The coaxial part is thermally connected to the 4.5 K and 70 K radiation shields of the cryostat.
The input antenna is movable to vary Qext in the range 106 - 107.