Author: Kaiser, M.
Paper Title Page
TUPVA057 Design Study for a Prototype Alvarez-Cavity for the Upgraded Unilac 2205
 
  • M. Heilmann, X. Du, P. Gerhard, L. Groening, M. Kaiser, S. Mickat, A. Rubin
    GSI, Darmstadt, Germany
  • A. Seibel
    IAP, Frankfurt am Main, Germany
 
  The design study describes the prototype Alvarez-tank of the new post-stripper of the UNILAC. A prototype with 17 drift tubes (including quadrupole singulets) of 3 m of total length and 2 m of diameter will be manufactured. This cavity features new drift tube shape profiles to provide for high shunt impedance at a maximum electric surface field of 1 Ek. Additionally, it allows realization and high power testing of an optimized stem configuration for field stabilization. In case of successful tuning and long-term operation at high power level, it shall be used as a first of series cavity of the new UNILAC post-stripper DTL.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPVA057  
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TUPVA058 Status of the FAIR pLinac 2208
 
  • C.M. Kleffner, R. Berezov, D. Daehn, J. Fils, P. Forck, L. Groening, M. Kaiser, K. Knie, C. Mühle, S. Puetz, A. Schnase, G. Schreiber, T. Sieber, J. Trüller, W. Vinzenz, C. Will
    GSI, Darmstadt, Germany
  • U. Ratzinger
    IAP, Frankfurt am Main, Germany
 
  This paper describes the development progress of the 70 MeV, 70 mA proton injector for the FAIR facility. The injector comprises an ECR-type high current proton source followed by a ladder 4-rod RFQ and six normal conduction CH-DTL accelerating cavities. This unique design allows for a compact structure. The design work of the cavities has been mostly completed by our collaberation partners at IAP Frankfurt. The design of the buncher cavities, the mechanical integration as well as beam diagnostic devices are currently under development. The construction of a new modulator for the pLinac rf-system has been started on site. The proton source and the LEBT as well as the subsequent chopper are currently assembled at CEA/Saclay. Beam commissioning of the source at Saclay will start at the beginning of 2017. An overview of the pLinac main parameters and design choices is given, and the overall status reported.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPVA058  
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THPVA003 Status of the Beam Dynamics Design of the New Post-Stripper DTL for GSI-FAIR 4414
 
  • A. Rubin, X. Du, L. Groening, M. Kaiser, S. Mickat
    GSI, Darmstadt, Germany
 
  The GSI UNILAC has served as injector for all ion species since 40 years. Its 108 MHz Alvarez DTL providing acceleration from 1.4 MeV/u to 11.4 MeV/u has suffered from material fatigue and has to be replaced by a new section. The design of the new post-stripper DTL is now under development in GSI. Five Alvarez tanks with four intertank sections provide 100% transmission and low emittance growth. The intertank sections allow for a matched solution and provide place for diagnostics. Simulations along the complete Alvarez DTL were done for 238U28+ using the TraceWin code. The transversal zero current phase advance is 65' for all tanks. Results of beam dynamics simulations for six different scenarios as well as an error study for the FAIR nominal case are presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA003  
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