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@INPROCEEDINGS{Vormann:357827,
      author       = {Vormann, Hartmut and Barth, Winfried and Miski-Oglu, Maksym
                      and Scheeler, Uwe and Vossberg, Markus and Yaramyshev,
                      Stepan},
      editor       = {Zimmermann, Frank and Tanaka, Hitoshi and Sudmuang, Porntip
                      and Klysubun, Prapong and Sunwong, Prapaiwan and
                      Chanwattana, Thakonwat and Petit-Jean-Genaz, Christine and
                      Schaa, Volker R. W.},
      title        = {{H}igh {C}urrent {H}eavy {I}on {B}eam {I}nvestigations at
                      {GSI}-{UNILAC}},
      address      = {Geneva, Switzerland},
      publisher    = {JACoW Publishing},
      reportid     = {GSI-2025-00481},
      pages        = {78-81},
      year         = {2022},
      note         = {Published by JACoW Publishing under the terms of the
                      Creative Commons Attribution 3.0 International license.},
      comment      = {Proceedings of the 13th International Particle Accelerator
                      Conference},
      booktitle     = {Proceedings of the 13th International
                       Particle Accelerator Conference},
      abstract     = {The GSI Universal Linear Accelerator UNILAC and the
                      synchrotron SIS18 will serve as injector for the upcoming
                      FAIR-facility. The UNILAC-High Current Injector will be
                      improved and modernized until FAIR is commissioned and the
                      Alvarez poststripper accelerator is replaced. The reference
                      heavy ion for future FAIR-operation is uranium, with highest
                      intensity requirements. To re-establish uranium beam
                      operation and to improve high current beam operation,
                      different subjects have been explored in dedicated machine
                      investigation campaigns. After a beam line modification in
                      2017 the RFQ-performance had deteriorated significantly; new
                      rods have been installed and the RF-working point has been
                      redefined. Also the Superlens-performance had become
                      unsatisfactory; improved with a modified RF-coupler. With a
                      pulsed hydrogen gas stripper target the uranium beam
                      stripping efficiency could be increased by $65\%.$ Various
                      work has already been carried out to establish this stripper
                      device in routine operation. With medium heavy ion beams a
                      very high beam brilliance at the end of transfer line to
                      SIS18 was achieved. Results of the measurement campaigns and
                      the UNILAC upgrade activities will be presented.},
      month         = {Jun},
      date          = {2022-06-12},
      organization  = {13th International Particle
                       Accelerator Conference, Bangkok
                       (Thailand), 12 Jun 2022 - 15 Jun 2022},
      keywords     = {Accelerator Physics (Other) / MC4: Hadron Accelerators
                      (Other)},
      cin          = {LIN / OPE},
      cid          = {I:(DE-Ds200)LIN-20160901OR400 /
                      I:(DE-Ds200)OPE-20051214OR052},
      pnm          = {899 - ohne Topic (POF4-899)},
      pid          = {G:(DE-HGF)POF4-899},
      experiment   = {$EXP:(DE-Ds200)no_experiment-20200803$},
      typ          = {PUB:(DE-HGF)8 / PUB:(DE-HGF)7},
      doi          = {10.18429/JACOW-IPAC2022-MOPOST012},
      url          = {https://repository.gsi.de/record/357827},
}