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FLEROV
LABORATORY of NUCLEAR REACTIONS

Founded on May 20, 1957



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Address your questions to:
ludmila@jinr.ru

EXPERIMENTAL SETUPS
    ACCULLINA-2 - fragment separator of the new generation

  • ACCULINNA-2 is in-flight fragment separator which belongs to the third generation of the DRIBs facilities. It is to be installed on a primary beam line of the upgraded cyclotron U400M and will be more powerful instrument for production of secondary 6-60 A•MeV RIBs. The new separator is the first stage facility in the process of production of high quality beams of radioactive nuclei with energy of 10-100 keV suitable for applied works in solid-state physics and for injection into an ion trap for mass-spectrometry and/or charge radii measurements. Practical realization of the new DRIBs-3 ISOL facility, i.e., injection of the low energy (10-30 keV) RIBs into the upgraded variable energy cyclotron U400R for the further acceleration up to 5-20 A•MeV is the main goal.

  • Layout of the new fragment separator ACCULINNA-2 in the U-400M cyclotron hall.


  • Characteristics of existing, and new in-flight RIB separators
    (ΔΩ and Δp/p are angular and momentum acceptances, Rp/Δp is the first-order momentum resolution when 1 mm object size is assumed)

    ACC/ACC-2
    FLNR JINR
    RIPS/BigRIBS
    RIKEN
    A1900
    MSU
    FRS/SuperFRS
    GSI
    LISE3
    GANIL
    ΔΩ, msr 0.9 / 5.8 5.0 / 8.0 8.0 0.32 / 5.0 1.0
    Δp/p, % ± 2.5 / ± 3.0 ± 3.0 / 6.0 ± 5.5 ± 2.0 / 5.0 ± 5.0
    Rp/Δp 1000 / 2000 1500 / 3300 2915 8600 / 3050 2200
    Bρ, Tm 3.2 / 3.9 5.76 / 9.0 6.0 18 / 18 3.2 - 4.3
    Length, m 21 / 38 27 / 77 35 74 / 140 19(42)
    E, AMeV 10÷40 / 6÷60 50÷90 / 350 110÷160 220÷1000/1500 40÷80

    Additional RIB Filter No / RF-kicker RF-kicker /
    S-form
    S-form &
    RF- kicker
    S-form / Preseparator Wien Filter

    ACCULINNA-2 will be compatible with RIPS: it’s more extended and operating at low energy domain ERIB ~ 6-60 AMeV with ZRIB = 1-36
    • • inexpensive project / conditions to work with tritium target / experience

  • The scientific program of ACCULINNA-2 fragment separator presupposes the extensive use of the advantages of low energy RIBs (E ~ 6-60 A MeV), cryogenic gaseous targets (including tritium) and modern technique for the study of light exotic nuclei with Z<36.

  • Project status and prospects


  • ACCULINNA-2 construction progress >>>

  • W. Beeckman et al., Status of ACCULINNA-2 RIB Fragment Separator HRS Workshop, GSI, November 2015

  • The possible proposed experiments at ACCULINNA-2 are aimed at the studies of the structure of proton rich nuclei 12O,16,17Ne, 19Mg, 26,27S and extremely neutron rich isotopes like 7H, 10He, 11Li, 16Be,19C.

  • References
    • Fragment separator ACCULINNA-2. Letter of intent, ACCULINNA collaboration. Version: 10.5, May 20, 2010.
      download: [ pdf] (3 854Mb)
    • Long-range plans for research with radioactive ion beams at JINR. A.S. Fomichev, A.A. Bezbakh, V. Chudoba, et al.
      download: [ pdf] (343kb)
    • First experiments at the ACCULINNA-2 fragment separator. A.S. Fomichev
      download: [ pptx] (19 2483Mb)


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Postal address:
FLNR JINR, 141980 Dubna,
Moscow region, Russia

Phone: (7-49621) 62-159
Telefax: (7-49621) 28-933
Telex: 911621 DUBNA SU
E-mail: yuliam@jinr.ru