Figure 10
FEL-2. The image represents the FEL spot in false colors from the two stages, superimposed on a YAG screen tilted at 45° with respect to the beam axis. The first-stage spot corresponds to the large blue–magenta ellipse, while the second-stage emission is the small central green–red ellipse. The light from the first stage can be filtered out or used in experiments, depending on the specific requests. |