Engel, Robin
(2015)
Real Time Analysis
of FEL Radiation Spectra
for the Estimation of Photon Pulse Duration.
["eprint_fieldopt_thesis_type_bachelor" not defined], Deutsches Electronen Synchrotron (DESY).
Abstract
One of the most challenging tasks for extreme ultraviolet, soft and hard X-ray freeelectron
laser photon diagnostics is the precise determination of the photon pulse duration,
which is typically in the sub 100 fs range. For some purposes like the FEL tuning,
an estimate of the pulse duration is required in real time and with minimal experimental
effort. Therefore a method has been developed to evaluate the photon pulse spectra
during run-time, yielding an estimate for the photon pulse duration. The developed
method makes use of the statistical properties and spectral correlation techniques and
has been embedded into the Data Acquisition System of the FLASH facility.
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