PAC Meeting on Condensed Matter Physics and Neutron Research
In January 2019, the 49th PAC meeting discussed the status and trends in the DNS-IV Project. The meeting focused on scientific opportunities with high neutron flux, structure and dynamics of soft and biological systems, bioenergetics, crystal and magnetic structures, new functional materials, and more. Key topics included neutron-antineutron oscillations, dark matter and dark energy, quantum phenomena, and nuclear standard model. The report highlighted advancements in neutron research and outlined future directions for JINR.
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49th meeting of the PAC on Condensed Matter Physics 24 25 January, 2019, Dubna DNS-IV Project. Present Status and Trends Working SubGroup for the Strategic Long-Range Plan of JINR. Report for 2016 2018 (for details see attached A Proposal to the SLRP of JINR on Neutron Research ) V.L.Aksenov National Research Center Kurchatov Institute , Moscow Joint Institute for Nuclear Research, Dubna
WSG on Condensed matter physics, neutron physics Co-chairmen: V.L.Aksenov (Russia) National Research Center Kurchatov Institute , Moscow; Frank Laboratory of Neutron Physics JINR, Dubna A. Ioffe (Germany) J lich Center for Neutron Science at Heinz Maier-Leibnitz Zentrum, M nchen Frank Laboratory of Neutron Physics JINR, Dubna Scientific secretary: D. Chudoba (Poland) Frank Laboratory of Neutron Physics JINR, Dubna Members: J. Carpenter (USA) Argonne National Laboratory, Chicago A. Harrison (UK) Diamond Light Source, Didcot, Member of JINR Scientific Council N. Kucerka (Slovakia) Frank Laboratory of Neutron Physics JINR, Dubna T.V. Kulevoy (Russia) National Research Center Kurchatov Institute ITEP, Moscow A.V. Lopatkin (Russia) N.A. Dollezhal Research and Development Institute of Power Engineering (NIKIET), Moscow F. Mezei (Sweden) European Spallation Source, Lund P. Mikula (Czech. Rep.) Nuclear Physics Institute e , Member of the JINR PAC on Condensed Matter Physics D. Nagy (Hungary) Wigner Research Centre for Physics, Budapest, Chairman of JINR PAC on Cond. Matter Physics V. Nesvizhevsky (France) Institute Laue-Langevin, Grenoble, Member of JINR PAC on Nuclear Physics L. Rosta (Hungary) Budapest Neutron Center, Budapest S.F. Sidorkin (Russia) Institute for Nuclear Research of Russian Academy of Sciences, Troitsk Moscow Reg. I.T. Tretyakov (Russia) N.A. Dollezhal Research and Development Institute of Power Engineering (NIKIET), Moscow
Scientific opportunities with a high neutron flux Structure and dynamics of soft and biological systems with high flux and polarized neutrons Primary and tertiary structures Intramolecular dynamics Bioenergetics of a cell Biomedicine and pharmacology Crystal and magnetic structure with high resolution and real-time diffraction at high pressure and magnetic fields New functional materials Beyond the Standard Model New Physics New aspects of quantum mechanics and consciousness Neutron-antineutron oscillations Dark matter and dark energy with UCN New Quantum phenomena with neutrons Neutron-rich nuclei at isotope separator on-line system with neutrons, fission Nuclear Standard Model Radiobiology, medicine Irradiation, isotopes The report on the PAC meeting (January, 2017) V.L.Aksenov JINR E3-2017-12, Dubna, 2017)
Dubna Neutron Source of the 4-th Generation The request of the scientific community 2 2 - -n neutron flux : eutron flux : ???= ? ????; ???= ?????/???/ /? (20 times higher IBR (20 times higher IBR- -2) 2) reference point is ESS with similar parameters reference point is ESS with similar parameters t tfast fast= 150 = 150 200 200 s s t ttherm therm= 250 = 250 300 300 s s Neutron pulse duration: Neutron pulse duration: Repetition rate: Repetition rate: 10 Hz 10 Hz Power background: Power background: 2 2 3 times less IBR 3 times less IBR- -2 2 Moderators: Moderators: 300 K, 80 K, 30 K and different geometry 300 K, 80 K, 30 K and different geometry A.M.Balagurov, M.V.Avdeev, V.I.Bodnarchuk, E.A.Goremychkin, S.E.Kichanov. Workshop Advanced Ideas for DNS-IV , December, 2018, Dubna
Conceptual research (2016 2018) I. Neutron Superbooster / Reactor Aksenov V., Balagurov A., Pepelyshev Yu., Rogov A. JINR P-13-2016-49 (2016); VANT: Physics of Nuclear Reactors (2017). High-Flux Pulsed Neutron Source on the Base of Cascade Booster Shabalin E., Aksenov V., Komyshev G., Rogov A. JINR P-13-2017-57 (2017); At. Energy 124 (6) 309 (2018). High-Flux Pulsed Reactor Based on Neptunium Vinogradov A., Pepelyshev Yu., Rogov A. Sidorkin S. JINR P13-2018-40 (2018) High-Flux Pulsed Neutron Source Driven by a Proton Accelerator for Beam Research : reports on the PAC meetings in 2017 and 2018
Conceptual research (2016 2018) II. A proton accelerator linear superconducting 0.8 1.2 GeV synchrotron, storage ring 0.8 1.2 GeV cyclotron 0.8 GeV Open questions accelerator stability (coupled dynamical systems) 2) matching of proton pulse length and moderating time of slow neutrons 3) cost
Conceptual research (2016 2018) III. Moderators at DNS-IV (preliminary) Top view Core + moderators Bottom view Moderators inside reflector From E.P.Shabalin From Yu.N.Pepelyshev
The basic set of neutron TOF stations Moderator Instrument Main issue T, K Size, cm 1. Material science*) 2. High-resolution*) 3. High-intensity 4. High-pressure 5. Magnetic Internal stresses Crystal structure In situ, real-time Micro samples Magnetic structure 300 / 80 K 300 / 80 K 80 K 80 K 30 K 10x10 10x10 20x20 20x20 20x20 Diffraction 6. Direct geometry-I**) 7. Direct geometry-II***) 8. Inverse geometry General purpose General purpose Molecular systems 80 K 20x20 30 K 80 K Inelastic 20x20 20x20 9. High-resolution 10. High-intensity-I 11. High-intensity-II General purpose In situ, real-time Micro samples 30 K 10x10 30 K 30 K SANS 10x10 10x10 NR Reflect. 12. Horizontal plane 13. Vertical plane General purpose Liquid media 30 K 30 K 10x10 10x10 General purpose Complex media 30 K 10x10 30 K 14. White beam 15. Energy dispersive 20x20 *) Fourier chopper **) Fermi chopper ***) Set of choppers
Conclusions 1. Two proposals for the conceptual design at Dollezhal RDIPE in 2019 2021: - Pulsed Fast Reactor IBR-3, Np (200 MEu); - Accelerator Based Neutron Source, Pu (750 1050 MEu). 2. Open questions: - safety and stability of accelerator multiplying target system; - more arguments for an accelerator (nuclear physics, biophysics, medical applications etc.) due to high cost. 3. 2019: main task is moderators - spectrometers optimization. 4. Today there is a justification of instruments for long pulse source.
DNS-IV project roadmap: 2016 - 2036 Activity 2016 18 2019 21 2022 24 2025 26 2027 35 2035 36 Conceptual research 2016 18 Technical study 2019 21 R & D 2022 24 Engineering design 2025 26 Construction 2027 35 Commissioning 2035 36
Strategic Long-Range Plan for JINR International Working Group has been established in 2016 under chairmanship of JINR Director in order to organize the elaboration of the Strategic Long Range Plan (SLRP) of JINR (from the presentation of Prof. B.Yu.Sharkov)
