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@PHDTHESIS{BermudezMacias:485675,
author = {Bermudez Macias, Ivette Jazmin},
othercontributors = {Fruehling, Ulrike and Duesterer, Stefan and Laarmann, Tim},
title = {{F}ree electron laser pulse characterization by {TH}z
streaking},
school = {University of Hamburg},
type = {Dissertation},
reportid = {PUBDB-2022-06762},
pages = {129},
year = {2022},
note = {Dissertation, University of Hamburg, 2022},
abstract = {The goal of this dissertation was to investigate a reliable
single-shot pulse duration diagnostic tool for the pulse
duration and wavelength range delivered at the Free Electron
LAser of Hamburg (FLASH). At
Self-Amplified-Spontaneous-Emission-based free-electron
lasers (FELs), the radiation parameters - duration, arrival
time, energy, spectrum, and spatial distribution - differ
for each pulse. A dedicated single-shot diagnostic tool for
each parameter is therefore essential in order to interpret
the experimental data on a pulse-to-pulse basis.This work
summarizes the effort to realize a temporal diagnostic tool
using the streaking technique by building a terahertz (THz)
"streak camera". The setup was prepared and calibrated, and
various pulse duration measurements with different
experimental settings were performed in order to explore and
validate the application range of the streaking method. The
aspects limiting the temporal resolution using the
commissioned streaking setup were characterized
experimentally. The pulse duration measurements were
analyzed using classical and quantum mechanical streaking
theory models.Furthermore, a deep statistical study on the
SASE fluctuations was realized using single-shot
measurements of various radiation parameters. Scaling laws
were derived using theoretical simulations and the measured
data. This analysis enabled the intrinsic statistical SASE
fluctuations to be disentangled from accelerator-based
fluctuations and measurement uncertainties.},
cin = {$XFEL_DO_DD_DA$},
cid = {$I:(DE-H253)XFEL_DO_DD_DA-20210408$},
pnm = {631 - Matter – Dynamics, Mechanisms and Control
(POF4-631) / 6G2 - FLASH (DESY) (POF4-6G2) / PHGS, VH-GS-500
- PIER Helmholtz Graduate School $(2015_IFV-VH-GS-500)$},
pid = {G:(DE-HGF)POF4-631 / G:(DE-HGF)POF4-6G2 /
$G:(DE-HGF)2015_IFV-VH-GS-500$},
experiment = {EXP:(DE-H253)F-FL21-20211112},
typ = {PUB:(DE-HGF)11},
urn = {urn:nbn:de:gbv:18-ediss-102082},
doi = {10.3204/PUBDB-2022-06762},
url = {https://bib-pubdb1.desy.de/record/485675},
}