Home/To the Main Page Search/Search E-Mail
                       
FLNR ACCELERATOR COMPLEXES


    DC280 cyclotron, a stand-alone SHE-factory

  • All works on creation of DC-280 cyclotron complex are completed in the FLNR JINR. New cyclotron start-up is planned for November 2018.
    (JINR TV, September 12, 2018)



    FLNR JINR DC-280 cyclotron complex. All works are completed
    JINR SI Department


  • Commissioning of DC-280 cyclotron complex
    (JINR TV, July 12, 2018)



    FLNR JINR DC-280 cyclotron complex. Commissioning of all systems is under way.
    JINR SI Department


    Creation of SHE factory based on the high-intensity universal DC-280 cyclotron (A ≤ 238, E ≤ 10 MeV·A, I ≤ 20 pµA) in a new separate experimental building is a part of the DRIBs-III project according to the Seven-Year Plan for the Development of JINR 2010-2016 approved by the Committee of Plenipotentiaries of the Governments of the JINR Member States (CPP) in November 2009.

    The SuperHeavy Element Factory will increase the overall production of super-heavy nuclei by one-two orders of magnitude with respect to presently achieved rates. This will enable the studies of nuclear /atomic structure of heaviest atoms and open the door to the discoveries of new elements above Z=118 and of isotopes closer to the predicted shell closure at N=184.


    SHE Factory Goals

    Experiments at the extremely low (σ<100 fb) cross sections:

    • Synthesis of new SHE in reactions with 50Ti, 54Cr ...;

    • Synthesis of new isotopes of SHE;

    • Study of decay properties of SHE;

    • Study of excitation functions.


    Experiments requiring high statistics:

    • Nuclear spectroscopy of SHE;

    • Precise mass measurements;

    • Study of chemical properties of SHE.


  • DC280 cyclotron, a stand-alone SHE-factory





  • Synthesis and study of properties of superheavy elements;

  • Search for new reactions for SHE-synthesis;

  • Chemistry of new elements;
  • DC-280 (expected)
    E=4 - 8 MeV/A
    Ion Ion
    energy
    [MeV/A]
    Output
    intensity
    7Li 4 1x1014
    18O 8 1x1014
    40Ar 5 6x1013
    48Ca 5 0,6-1,2x1014
    54Cr 5 2x1013
    58Fe 5 1x1013
    124Sn 5 2x1012
    136Xe 5 1x1014
    238U 7 5x1010


    DC280 cyclotron main design parameters

    Ion source DECRIS-PM - 14 GHz on the HV platform (Umax=60kV )
    Injection energy Up to 80 keV/Z
    A/Z range 4÷7.5
    Energy 4÷8 MeV/n
    Ion mass (for DECRIS-PM) 4-136
    Intensities (A~50) >10 ρμA
    Magnetic field level 0.6÷1.3T
    K factor 280
    Dee voltage 2x130 kV
    RF power consumption 2x30 kW
    Flat-top dee voltage 2x13 kV
    Flat-top power consumption 2x2 kW
    Beam emittance less than 30 π mm•mrad
    Efficiency of beam transfer >50%


  • Main setups:

    • Gas-filled recoil separator (DGFRS-II);
    • Preseparator for chemical investigations;
    • Separator for Heavy Element Spectroscopy: velocity filter SHELS;
    • Mass Analyzer of SuperHeavy Atoms (MASHA)
    • Channels reserved for external users

  • SHE Factory Project progress




  • SHE Factory building on November 14,2016



  • Assembly of DC-280 cyclotron magnet is almost completed
    (JINR TV, November 14, 2016)


    https://www.youtube.com/jinrtv



  • DC-280 cyclotron magnet is ready to be tested
    (JINR TV, February 09, 2017)


    https://www.youtube.com/jinrtv





    <<< back