Author/Authors :
Gluskin، نويسنده , , E and Vinokurov، نويسنده , , N.A and Decker، نويسنده , , G and Dejus، نويسنده , , R.J and Emma، نويسنده , , A. S. Ilinski، نويسنده , , P and Moog، نويسنده , , E.R and Nuhn، نويسنده , , H.-D and Vasserman، نويسنده , , I.B، نويسنده ,
Abstract :
The Linac Coherent Light Source (LCLS) undulator line will consist of undulator segments separated by breaks of various lengths. Focusing quadrupoles, in a FODO lattice, and electron-beam diagnostics will be located in the breaks, and every third break will be longer to also accommodate photon diagnostics. The electron-beam beta function and the undulator period were selected to minimize the saturation length. The FEL simulation code RON has been used to optimize parameters such as the length of the undulators and the break lengths between undulators. Different break lengths after the first three undulators have been found to help reduce the overall undulator line saturation length. Tolerances for individual undulators have also been determined.
