Paper |
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THOBA02 |
Status of the Emittance Transfer Experiment Emtex |
2798 |
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- M.T. Maier, L. Groening, C. Mühle, I. Pschorn, P. Rottländer, C. Will, C. Xiao
GSI, Darmstadt, Germany
- M. Chung
Fermilab, Batavia, Illinois, USA
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In order to improve the injection efficiency of the round UNILAC heavy ion beam into the asymmetric acceptance of the SIS18 it would be of great advantage to decrease the horizontal emittance by a so called emittance transfer to the vertical plane. In this contribution the present status of the emittance transfer experiment EMTEX at GSI will be reported. A short introduction about the theoretical background of the technique will be given, while the main part is dedicated to the practical solutions setting up a test beam line at GSI. Finally, the results of a first commissioning beam time will be presented. The scheduled beam time to apply the emittance transfer technique foreseen in spring 2014 had to be shifted to calendar week 26 in 2014, just after this conference, as some components have not been delivered in time by the contractor. The results and comparison to the theoretical predictions you may find in later publications.
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Slides THOBA02 [1.928 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2014-THOBA02
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THPME006 |
Straight Injection of an intense Uranium Beam into the GSI High Current RFQ |
3217 |
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- H. Vormann, A. Adonin, W.A. Barth, L.A. Dahl, P. Gerhard, L. Groening, R. Hollinger, M.T. Maier, S. Mickat, A. Orzhekhovskaya, C. Xiao, S.G. Yaramyshev
GSI, Darmstadt, Germany
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A dedicated high current uranium ion source and LEBT will be built at the GSI High Current Injector (HSI), to fulfil the intensity requirements for FAIR (Facility for Antiproton and Ion Research at Darmstadt). This new injection line will be integrated into the existing complex which already comprises two branches. The new LEBT is designed as a straight injection line without dipole magnet, i.e. without dispersive charge state separation. All uranium charge states, coming from the ion source, are transported to the heavy ion high current GSI-HSI-RFQ. Only the design charge state U4+ is accelerated to the final RFQ energy. The new LEBT design is based on beam emittance and current measurements behind the existing ion source. Beam dynamics simulations have been performed with the codes TRACE-3D (envelopes), DYNAMION, BEAMPATH and TRACK (multiparticle). The recent layout of the LEBT, as well as the results of beam dynamics studies are presented.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2014-THPME006
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THPME007 |
A Virtual Charge State Separator as an Advanced Tool Coupling Measurements and Simulations |
3220 |
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- S.G. Yaramyshev, A. Adonin, W.A. Barth, L.A. Dahl, P. Gerhard, L. Groening, R. Hollinger, M.T. Maier, S. Mickat, A. Orzhekhovskaya, H. Vormann
GSI, Darmstadt, Germany
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A new Low Energy Beam Transport (LEBT) for multi-charge uranium beam will be built at GSI High Current Injector. All uranium charge states coming from the new ion source will be injected into GSI heavy ion high current HSI-RFQ, but only design ions U4+ will be accelerated to the final RFQ energy. A detailed knowledge about injected beam- current and -emittance for pure design U4+ ions is necessary for a proper beam line design commissioning and operation, while the measurements are possible only for a full beam including all charge states. Detailed measurements of beam current and emittance are performed behind the first quadrupole triplet at the beam line. A dedicated algorithm, based on combination of measurements and results of an advanced beam dynamics simulations, provides for an extraction of beam- current and -emittance for only U4+ component of a beam. The obtained results and final beam dynamics design for the new straight beam line are presented.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2014-THPME007
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