Beams

FRIB beam rates

The following link provides estimated rare isotope beam rates at FRIB for the Program Advisory Committee 1 (PAC 1).

Please note:

  • The LISE++ code (v.9.2.68) has been used to estimate fragment transmission.
  • LISE++ tutorial: Making 64Cr. This PowerPoint presentation shows an example of developing — in simulation — a rare-isotope beam at FRIB. It shows some options to optimize the beam for either higher rate or higher purity.
  • The rates are estimated based on the EPAX 2.15[1] cross section parameterization for fragmentation and the LISE++ 3EER model[2,3] for in-flight fission.
  • Reaccelerated and stopped beam rates above 1E+8 are very uncertain. The use of solid catchers may yield higher rates in some cases. This option is not included.
  • PAC one assumes 10kW (5kW for 238U) and a limited set of primary beams.
  • Estimated rates may change as the various assumptions are tested and refined.
    • [1] – K. Sümmerer and B. Blank, Phys. Rev. C 61 (2000) 034607.
    • [2] – O.B.Tarasov and D.Bazin, NIM B 266 (2008) 4657-466.
    • [3] – O.B. Tarasov, "LISE++ development: Abrasion-Fission", Tech.Rep. MSUCL1300, NSCL, Michigan State University 2005.
  • For further information regarding these calculations, please refer to the readme file (PDF - 230 KB).


Reacclerator (ReA) 3 stand-alone beams (stable and rare isotope)

The following list includes stable and long-lived radioactive beams that may be run at ReAccelerator (ReA) 3 or ReA6 in stand-alone mode (that is, not coupled to FRIB). Please note that it may be possible to run other beams with some development work. For those who are interested in using a beam for an experiment at ReA3 or ReA6 that is not on the beam list, please contact the Manager for User Relations. Feasibility will be discussed with the operations group. 

The rates provided are rough estimates. Users interested in improved estimates and beam purity should see the notes below. Rates and purity used in proposals must be developed by working with an FRIB Beam Physicist. Please contact the Manager for User Relations for assistance.

Please note:

  • Beams of long-lived and rare stable isotopes are subject to availability of material.
  • All of the long-lived radioactive beams will require development time, and may not be available at the beginning of the ReA stand-alone running period.
  • Intensities are quoted for the charge states indicated. Intensities can vary with the charge state and energy; higher energies for heavy isotopes can be obtained with reduced intensity, please contact the Manager for User Relations for a specific energy or beam intensity.
  • Radioactive isotopes produced in batch mode are included. If you have a special request, please contact the Manager for User Relations.

ReA stand-alone beams (stable and Rare isotope) list