SASE-FEL experiments at the TESLA Test Facility Linac
Pedro Castro, DESY
In summer last year, a 14 meter long undulator was installed
in the TESLA Test Facility (TTF) Linac. In February, the first
experimental evidence for SASE was observed at a wavelength of 109 nm.
Afterwards, SASE gain was observed at a range of wavelengths between
80 and 180 nm, demonstrating the tunability of this type of radiation
facility. After a brief introduction to the TESLA Linear Collider project,
the main parameters and components of the TESLA Test Facility (TTF) Linac
will be presented. The experimental results on SASE will be discussed
and compared with the theoretical expectations. At the end, the next steps
for new FEL experiments will be shown.