• O.K. Kester, D. Bazin, C. Benatti, J. Bierwagen, G. Bollen, S. Bricker, S. Chouhan, C. Compton, A.C. Crawford, K.D. Davidson, J. DeLauter, M. Doleans, L.J. Dubbs, K. Elliott, W. Hartung, M.J. Johnson, S.W. Krause, A. Lapierre, F. Marti, J. Ottarson, G. Perdikakis, J. Popielarski, L. Popielarski, M. Portillo, R. Rencsok, D.P. Sanderson, S. Schwarz, N. Verhanovitz, J.J. Vincent, J. Wlodarczak, X. Wu, J. Yurkon, A. Zeller, Q. Zhao
  NSCL, East Lansing, Michigan
• A. Schempp, J.S. Schmidt
  IAP, Frankfurt am Main

Rare isotope beam (RIB) accelerator facilities provide rich research opportunities in nuclear physics. The National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University (MSU) is constructing a RIB facility, called ReA3. It will provide unique low-energy rare isotope beams by stopping fast RIBs and reaccelerating them in a compact linac. 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 (QWRs) 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, as the charge state of the ions can be adjusted by the EBIT. ReA3 will initially use beams from NSCL's Coupled Cyclotron Facility (CCF). Later ReA3 will provide reacceleration capability for the Facility for Rare Isotope Beams (FRIB), a new national user facility funded by the Department of Energy (DOE) that will be hosted at MSU. The ReA3 concept and status of ReA3 will be presented, with emphasis on the comissioning of the facility, which is underway.

Slides

• M. Okamura, J.G. Alessi, E.N. Beebe, K. Kondo, R.F. Lambiase, V. LoDestro, R. Lockey, M. Mapes, A. McNerney, D. Phillips, A.I. Pikin, D. Raparia, J. Ritter, L. Smart, L. Snydstrup, A. Zaltsman
  BNL, Upton, Long Island, New York
• T. Kanesue
  Kyushu University, Hakozaki
• A. Schempp, J.S. Schmidt, M. Vossberg, C. Zhang
  IAP, Frankfurt am Main
• J. Tamura
  Department of Energy Sciences, Tokyo Institute of Technology, Yokohama

The EBIS based preinjector for the RHIC is now being commissioned. During the step-wise commissioning of the preinjector from January 2009 to June 2010, the RFQ was commissioned first using Test EBIS in January 2009 and then moved to its final location and commissioned again with RHIC EBIS in March 2010. The RFQ accelerates ions from 17 keV/u to 300 keV/u and operates at 100.625 MHz. The RFQ is followed by a short (81 cm) Medium Energy Beam Transport (MEBT), which consists of four quadrupoles and one buncher cavity. Temporary diagnostics for this commissioning included an emittance probe, TOF system, fast Faraday cup, and beam current measurement units. This contribution will report results of RFQ and MEBT commissioning with helium and gold beams.