Author/Authors :
Gerth، نويسنده , , Ch and Faatz، نويسنده , , B and Lokajczyk، نويسنده , , T and Treusch، نويسنده , , R and Feldhaus، نويسنده , , J، نويسنده ,
Abstract :
A single-pass free-electron laser operating in the self-amplified spontaneous-emission (SASE) mode at around 100 nm is currently under test at the TESLA Test Facility at DESY. After first observation of SASE in February 2000, the photon beam has been characterized by different techniques. We present the methods of VUV photon diagnostics that were used to measure the spectral and angular distribution of the photon beam and how these properties are affected by the electron beam energy and orbit in the undulator.
Keywords :
Photon beam diagnostics , CCD camera , SASE , free electron laser , X-ray laser , VUV
