Author: Utyonkov, V.K.
Paper Title Page
GFS-2 - The New Gas-filled Separator for Super-Heavy Elements in JINR. A Guided Walk through the Genesis of the Project from First Thoughts to Completion  
  • W. Beeckman, S. Antoine, F. Forest, P.J. Jehanno, P. Jivkov, M.J. Leray, X. Milpied, C. Nignol, O. Tasset-Maye
    SIGMAPHI S.A., Vannes, France
  • A.G. Popeko, V.K. Utyonkov
    JINR/FLNR, Moscow region, Russia
  The brand-new Superheavy Element Factory at the Flerov Laboratory of Nuclear Reactions (FLNR) in JINR, Dubna, is under completion, with the high-current DC-280 cyclotron fully installed and tested having Argon beams available for first tests. To improve the efficiency of studies on heavy and superheavy nuclei, it will deliver a wide range of species with high intensity, which in turn require effective separators providing high suppression of unwanted reaction products. The first experiment fed by the cyclotron, GFS-2, is a universal gas-filled separator for synthesis and study of the properties of heavy isotopes, based on the QvDhQvQhD scheme. The presentation describes its study and design in close collaboration between FLNR and Sigmaphi, starting from the initial demand in 2015 and going through the different steps, up to its construction in 2017 and installation in 2018. A second system, GFS-3 is ready to be installed by the end of 2019.  
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THC01 SHE Factory: Cyclotron Facility for Super Heavy Elements Research 305
  • I.V. Kalagin, S.L. Bogomolov, S.N. Dmitriev, B. Gikal, G.G. Gulbekyan, I.A. Ivanenko, G.N. Ivanov, N.Yu. Kazarinov, M.V. Khabarov, Y.T. Oganessian, N.F. Osipov, S.V. Pashchenko, V.A. Semin
    JINR, Dubna, Moscow Region, Russia
  • V.K. Utyonkov, A.V. Yeremin
    JINR/FLNR, Moscow region, Russia
  The synthesis of heavy and the heaviest elements and the study of their nuclear and chemical properties are of highest priority in the basic research programme of the Flerov Laboratory of Nuclear Reactions. The synthesis of super heavy elements (SHE) with atomic numbers 113-118 has been achieved in the 48Ca-induced reactions. The International Unions of Pure and Applied Physics (IUPAP) and Chemistry (IUPAC) recognized the priority of Dubna in the discovery of elements 114-118. The seventh period of the Periodic Table has been completed. In accordance with the development program, the first in the world SHE Factory was built at the Laboratory on the basis of the new DC280 cyclotron which was commissioned in 2019. DC-280 has to provide intensities up to 10 pmkA for ions with atomic masses over 50. The main task of the Factory is the synthesis of new chemical elements with atomic numbers 119 and higher, as well as a detailed study of the nuclear and chemical properties of previously discovered superheavy elements. The Factory are being equipped with target materials, new separators and detectors for the study of the nuclear, atomic and chemical properties of the new elements.  
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About • paper received ※ 11 September 2019       paper accepted ※ 25 September 2019       issue date ※ 20 June 2020  
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