Author: Adonin, A.
Paper Title Page
MOPOY017 Upgrade of the Universal Linear Accelerator UNILAC for FAIR 880
 
  • L. Groening, A. Adonin, X. Du, R. Hollinger, E. Jäger, M.T. Maier, S. Mickat, A. Rubin, B. Schlitt, G. Schreiber, H. Vormann, C. Xiao, A. Yakushev, C. Zhang
    GSI, Darmstadt, Germany
  • M. Baschke, H. Hähnel, H. Podlech, U. Ratzinger, A. Seibel, R. Tiede
    IAP, Frankfurt am Main, Germany
  • Ch.E. Düllmann, P. Scharrer
    HIM, Mainz, Germany
 
  In order to meet the requirements on beam parameters for the upcoming FAIR facility at GSI, the injector linac UNILAC will be upgraded. The activities comprise development of the sources for stable provision of intense uranium beams at a repetition rate of 2.7 Hz, a revision of the beam dynamics layout of the 120 keV/u RFQ, the replacement of the matching section to the 1.4 MeV/u pre-stripper DTL, and enhancement of the gaseous stripping section efficiency. This section shall also include a round-to-flat emittance adaptor to prepare the beam for injection into the synchrotron SIS18 which has a flat transverse injection acceptance. Finally, the upgrade includes the complete replacement of the 40 year old 11.4 MeV/u Alvarez-type post-stripper DTL with a new DTL, preferably using Alvarez-type cavities with improved beam focusing features, as well as its rf-power alimentations.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOY017  
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TUPMR057 High Current Proton and Carbon Beam Operation via Stripping of a Molecular Beam at GSI UNILAC 1390
 
  • M. Heilmann, A. Adonin, W.A. Barth, Ch.E. Düllmann, R. Hollinger, E. Jäger, P. Scharrer, W. Vinzenz, H. Vormann
    GSI, Darmstadt, Germany
  • W.A. Barth, Ch.E. Düllmann, P. Scharrer
    HIM, Mainz, Germany
  • Ch.E. Düllmann
    Johannes Gutenberg University Mainz, Institut of Nuclear Chemistry, Mainz, Germany
  • P. Scharrer
    Mainz University, Mainz, Germany
 
  The experimental program of the future facility for Antiproton and Ion Research (FAIR) project requires a high number of cooled anti-protons per hour. The FAIR proton injector linac has to deliver a 70 MeV, 35 mA pulsed proton beam at a repetition rate of 4 Hz. During recent machine investigations at the GSI a high current proton beam was achieved in the Universal Lineral Accelerator (UNILAC). In preparation for this the ion source was equipped with a newly developed 7-hole extraction system and optimized for single charged hydrocarbon beam (isobutane gas) operation. This beam was accelerated to 1.4 MeV/u and cracked in a new pulsed gas stripper into protons and charged carbon. The new stripper setup injects high density gas pulses synchronous with the transit of the beam pulse close to the beam trajectory. With this setup a proton (up to 4.3 mA) as well a carbon beam (up to 9.5 mA) intensity record at beam energy of 1.4 MeV was achieved. The proton beam was accelerated up to 3.6 MeV/u inside the first Alvarez-section with full transmission. The paper will present beam measurement in comparison to the former beam investigations using a 2 mA proton beam in the entire UNILAC.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMR057  
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WEOBA03 High Brilliance Uranium Beams for FAIR 2052
 
  • W.A. Barth, A. Adonin, Ch.E. Düllmann, M. Heilmann, R. Hollinger, E. Jäger, O.K. Kester, J. Khuyagbaatar, J. Krier, E. Plechov, P. Scharrer, W. Vinzenz, H. Vormann, A. Yakushev, S. Yaramyshev
    GSI, Darmstadt, Germany
  • Ch.E. Düllmann, J. Khuyagbaatar, P. Scharrer, A. Yakushev
    HIM, Mainz, Germany
  • Ch.E. Düllmann
    Johannes Gutenberg University Mainz, Institut of Nuclear Chemistry, Mainz, Germany
  • P. Scharrer
    Mainz University, Mainz, Germany
 
  The 40 years old GSI-UNILAC (Universal Linear Accelerator) as well as the heavy ion synchrotron SIS18 will serve as a high current heavy ion injector for the new FAIR (Facility for Antiproton and Ion Research) synchrotron SIS100. Due to an advanced machine investigation program in combination with the ongoing UNILAC upgrade program, a new uranium beam intensity record (10 emA, U29+) at very high beam brilliance was achieved recently in a machine experiment campaign. This is an important step paving the way to fulfill the FAIR heavy ion high intensity beam requirements. Results of high current uranium beam measurements applying a newly developed pulsed hydrogen gas stripper (at 1.4 MeV/u) will be presented in detail.  
slides icon Slides WEOBA03 [2.281 MB]  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEOBA03  
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