Author: Leitner, D.
Paper Title Page
WEP226 Commissioning Results of the ReA RFQ at MSU* 1912
 
  • D. Leitner, C. Benatti, S.W. Krause, D. Morris, S. Nash, J. Ottarson, G. Perdikakis, M. Portillo, R. Rencsok, T. Ropponen, L. Tobos, N.R. Usher, D. Wang
    NSCL, East Lansing, Michigan, USA
  • J. Haeuser
    Kress GmbH, Biebergemuend, Germany
  • O.K. Kester
    GSI, Darmstadt, Germany
  • F. Marti, E. Tanke, X. Wu, Q. Zhao
    FRIB, East Lansing, Michigan, USA
  • A. Schempp, J.S. Schmidt, H. Zimmermann
    IAP, Frankfurt am Main, Germany
 
  Funding: Project funded by Michigan State University
The Facility for Rare Isotope Beams (FRIB) is currently in the preliminary design phase at Michigan State University (MSU). FRIB consists of a driver LINAC for the acceleration of heavy ion beams, followed by a fragmentation target station and a ReAccelerator facility (ReA3). ReA3 comprises gas stopper systems, an Electron Beam Ion Trap (EBIT) charge state booster, a room temperature radio frequency quadrupole (RFQ), a LINAC using superconducting quarter wave resonators and an achromatic beam transport and distribution line to the new experimental area. Beams from ReA3 will range from 3 MeV/u for heavy ions to about 6 MeV/u for light ions. The ReA3 RFQ, which is of the 4 rod type, is designed to accelerate ions with an Q/A of 0.2 to 0.5 from 12 keV/u to 600 keV/u. The RFQ operates at a frequency of 80.5 MHz and power levels up to 120 kW at 10% duty factor. In this paper we will report on commissioning results from the ReA3 RFQ using a H2+ and He+ beam from an auxiliary ion source.
 
 
FROAN2 DIANA, a Next Generation Deep Underground Accelerator Facility 2552
 
  • D. Leitner
    NSCL, East Lansing, Michigan, USA
  • M. Couder, M. Wiescher
    Notre Dame University, Notre Dame, Iowa, USA
  • A. Hodgkinson, A. Lemut, J.S. Saba
    LBNL, Berkeley, California, USA
  • M. Leitner
    FRIB, East Lansing, Michigan, USA
 
  Funding: This work was supported by the National Science Foundation NSF-09-500 grant (DUSEL S4), Proposal ID 091728
DIANA (Dakota Ion Accelerators for Nuclear Astrophysics) is a next generation nuclear astrophysics accelerator facility proposed to be built as part of the US DUSEL (Deep Underground Science and Engineering Laboratory) project. The scientific goals of DIANA are focused on experiments related to nucleosynthesis processes. Reaction cross-sections at stellar temperature are extremely low, which makes these experiments challenging. Small signal rates are overwhelmed by large background rates associated with cosmic ray-induced reactions, background from natural radioactivity in the laboratory environment, and the beam-induced background on target impurities. By placing the DIANA facility deep underground (1.4 km) the cosmic ray induced background can be eliminated. In addition, the DIANA accelerator is being designed to achieve large laboratory reaction rates by delivering high ion beam currents (up to 100 mA) to a high density super-sonic jet-gas target (up to 1018 atoms/cm2). Two accelerators are coupled to enable measurements over a wide energy range from 30 keV to 3 MeVin a consistent manner. The accelerators design and its technical challenges are presented.
 
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