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@INPROCEEDINGS{Groening:357179,
      author       = {Groening, Lars},
      editor       = {Jaje, Kelly and Bishofberger, Kip and Brody, Ryan and
                      Bruno, Gustavo and Chrin, Jan and Eyberger, Cathy and
                      Montes, Maggie and Skiadopoulos, Denise and Wang, Ling and
                      Wootton, Kent},
      title        = {{C}onsiderations and findings on beam vorticity dynamics},
      publisher    = {JACoW Publishing},
      reportid     = {GSI-2025-00325},
      pages        = {397-399 pages},
      year         = {2024},
      note         = {Published by JACoW Publishing under the terms of the
                      Creative Commons Attribution 4.0 license.},
      abstract     = {Rotation of beams is usually quantified through its angular
                      momentum rather than through its vorticity. However, the
                      difference of the two transverse eigen-emittance is linked
                      more strongly to vorticity as to angular momentum. It has
                      been found that the dynamics of vorticity has remarkable
                      similarity to the dynamics of the beam envelope along
                      channels of solenoids and quadrupole triplets. Transport
                      matrices of vorticity, corresponding phase advances and
                      Twiss parameters look very similar and are partially even
                      identical to their counterparts concerning envelopes.
                      Corresponding to emittance, the quantity of vortissance,
                      being a constant of motion, is defined. Unlike emittance,
                      for vorticity-dominated beams, it may take imaginary values
                      causing imaginary Twiss parameters and negative or zero
                      phase advances along a finite beam line section.},
      month         = {Aug},
      date          = {2024-08-25},
      organization  = {32th Linear Accelerator Conference,
                       Chicago (USA), 25 Aug 2024 - 30 Aug
                       2024},
      keywords     = {Accelerator Physics (Other) /
                      mc1-beam-dynamics-extreme-beams-sources-and-beam-related-technologies
                      - MC1: Beam Dynamics, Extreme Beams, Sources and
                      Beam-Related Technologies (Other) / MC1.1 - MC1.1 Beam
                      Dynamics, beam simulations, beam transport (Other)},
      cin          = {PSU},
      cid          = {I:(DE-Ds200)PSU-20121002OR247},
      pnm          = {621 - Accelerator Research and Development (POF4-621)},
      pid          = {G:(DE-HGF)POF4-621},
      experiment   = {$EXP:(DE-Ds200)no_experiment-20200803$},
      typ          = {PUB:(DE-HGF)8},
      doi          = {10.18429/JACOW-LINAC2024-TUPB029},
      url          = {https://repository.gsi.de/record/357179},
}