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@PHDTHESIS{Winkler:437970,
      author       = {Winkler, Paul Viktor},
      title        = {{E}mittance {M}easurements at {L}aser-{W}akefield
                      {A}ccelerators},
      school       = {University of Hamburg},
      type         = {Dissertation},
      reportid     = {PUBDB-2020-01735},
      pages        = {145},
      year         = {2020},
      note         = {Dissertation, University of Hamburg, 2019},
      abstract     = {Laser-wakefield accelerators enable the generation of
                      electron beams with initially nm-small emittances and
                      GeV-level beam energies within cm-scale distances and are
                      thereforepromissing candidates for drivers of future
                      experiments. However, the percent-level energy-spreads and
                      shot-to-shot fluctuations in beam quality can pose a limit
                      to the transportability of plasma-generated beams, and
                      further impete the measurement of the beam emittance using
                      conventional methods.In the framework of this thesis, two
                      energy-resolved phase-space diagnostics, a single-shot and a
                      multi-shot method, have been implemented at the LUX
                      laser-plasma accelerator.Electron beams from ionization
                      injection are imaged by a compact quadrupole doublet from a
                      virtual source into a dispersive electron spectrometer,
                      which allows to measurethe beam emittance, beam size,
                      divergence and phase-space correlation on the
                      singleenergy-slice level. The results from both methods
                      agree within $3\%,$ which verifies theapplicability of the
                      single-shot method at our setup and prooves the
                      reproducability ofthe generated electron beams. A complex
                      variation of the phase-space within the broadenergy spectrum
                      is observed.The implemented diagnostics further allow to
                      measure the chromatic effects of the transportoptics on the
                      beam phase-space and a first measurement of the chromatic
                      emittanceis presented. For a $2\%-energy-spread$
                      sub-interval of the spectrum the normalized beamemittance
                      grows by $10\%$ from (0.83 $\pm$ 0.07) mm mrad to finally
                      (0.93 $\pm$ 0.07) mm mradinside the capturing optic and is
                      conserved afterwards. With the achieved measurement
                      precision, based on a detailed accuracy study andcalibrated
                      with high statistic scans, a reliable phase-space diagnostic
                      has been developedfor emittance optimization for future
                      experiments at LUX.},
      cin          = {MPY / FLA / CFEL-LUX},
      cid          = {I:(DE-H253)MPY-20120731 / I:(DE-H253)FLA-20120731 /
                      I:(DE-H253)CFEL-LUX-20160909},
      pnm          = {631 - Accelerator R $\&$ D (POF3-631) / PHGS, VH-GS-500 -
                      PIER Helmholtz Graduate School $(2015_IFV-VH-GS-500)$},
      pid          = {G:(DE-HGF)POF3-631 / $G:(DE-HGF)2015_IFV-VH-GS-500$},
      experiment   = {EXP:(DE-H253)CFEL-Exp-20150101},
      typ          = {PUB:(DE-HGF)11},
      url          = {https://bib-pubdb1.desy.de/record/437970},
}