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@INPROCEEDINGS{Ye:409100,
      author       = {Ye, Hong and Fallahi, Arya and Kärtner, Franz and Küpper,
                      Jochen and Muecke, Oliver and Rossi, Giulio Maria and
                      Trippel, Sebastian},
      title        = {{C}haracterization of {P}olarization-{D}ependent
                      {E}mittance {F}rom an {A}rray of {A}u {N}anorods using
                      {V}elocity {M}ap {I}maging {S}pectrometer},
      address      = {Geneva},
      publisher    = {JACoW Publishing},
      reportid     = {PUBDB-2018-03279},
      isbn         = {978-3-95450-184-7},
      pages        = {1612-1614},
      year         = {2018},
      abstract     = {Electron beams of high quality, e.g., low emittance, are of
                      crucial importance for cutting-edge scientific instruments,
                      such as x-ray free electron lasers (XFELs) and ultrafast
                      electron diffraction (UED) setups. A velocity-map-imaging
                      (VMI) spectrometer was implemented to characterize the
                      intrinsic root-mean-square (rms) normalized emittance from
                      photocathodes. The spectrometer operated in both, spatial
                      map imaging (SMI) and VMI modes. Therefore, spatial- and
                      velocity-coordinates were recorded independently and
                      quickly. The technique allows for fast complete emittance
                      measurements, within minutes. A 75 μm pitch array of Au
                      nanorods of dimension 100 × 30 ~ nm, was studied under
                      strong-field-emission regime by 100 fs 1 kHz 1.3 μm laser
                      pulses with a 300 × 30 μm² focus spot size on the sample.
                      A patterned electron bunch was observed, each emitted from a
                      single nanorod within the array. A polarization dependent
                      photoemission study was performed showing a smaller
                      rms-normalized divergence of 0.8 mrad with the laser
                      polarization normal to the sample surface, compared to 1.15
                      mrad for the parallel case.},
      month         = {Apr},
      date          = {2018-04-29},
      organization  = {9th International Particle Accelerator
                       Conference, Vancouver (Canada), 29 Apr
                       2018 - 4 May 2018},
      cin          = {UNI/CUI / CFEL-UFOX / FS-CFEL-2 / FS-CFEL-CMI / UNI/EXP /
                      FS-CFEL-1},
      cid          = {$I:(DE-H253)UNI_CUI-20121230$ /
                      I:(DE-H253)CFEL-UFOX-20160927 /
                      I:(DE-H253)FS-CFEL-2-20120731 /
                      I:(DE-H253)FS-CFEL-CMI-20220405 /
                      $I:(DE-H253)UNI_EXP-20120731$ /
                      I:(DE-H253)FS-CFEL-1-20120731},
      pnm          = {631 - Accelerator R D (POF3-631) / AXSIS - Frontiers in
                      Attosecond X-ray Science: Imaging and Spectroscopy (609920)
                      / CUI - Hamburger Zentrum für ultraschnelle Beobachtung
                      (194651731) / DFG project 281310551 - SOLSTICE - Festkörper
                      in starken terahertz und infrarotenTräger-Einhüllende
                      phasenstabilen Wellenformen (281310551) / ACHIP - Laser
                      Accelerators on a Chip $(ACHIP_2015-10-01)$ / COMOTION -
                      Controlling the Motion of Complex Molecules and Particles
                      (614507)},
      pid          = {G:(DE-HGF)POF3-631 / G:(EU-Grant)609920 /
                      G:(GEPRIS)194651731 / G:(GEPRIS)281310551 /
                      $G:(DE-HGF)ACHIP_2015-10-01$ / G:(EU-Grant)614507},
      experiment   = {EXP:(DE-H253)CFEL-Exp-20150101},
      typ          = {PUB:(DE-HGF)8 / PUB:(DE-HGF)7},
      doi          = {10.18429/JACOW-IPAC2018-TUPML031},
      url          = {https://bib-pubdb1.desy.de/record/409100},
}