 DOCUMENT METADATASLAC Publication: SLAC-PUB-14194
SLAC Release Date: July 30, 2010
FEL Gain Length and Taper Measurements at LCLS
Ratner, Daniel.
We present experimental studies of the gain length and saturation power level from 1.5 nm to 1.5 A at the Linac Coherent Light Source (LCLS). By disrupting the FEL process with an orbit kick, we are able to measure the X-ray intensity as a function of undulator length. This kick method is cross-checked with the method of removing undulator sections. We also study the FEL-induced electron energy loss after saturation to determine the optimal taper of the undulator K values. The experimental resul... Show Full Abstract
We present experimental studies of the gain length and saturation power level from 1.5 nm to 1.5 A at the Linac Coherent Light Source (LCLS). By disrupting the FEL process with an orbit kick, we are able to measure the X-ray intensity as a function of undulator length. This kick method is cross-checked with the method of removing undulator sections. We also study the FEL-induced electron energy loss after saturation to determine the optimal taper of the undulator K values. The experimental results are compared to theory and simulations. Show Partial Abstract
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