Choose timezone
Your profile timezone:
SCIENCE BRINGS NATIONS TOGETHER
The XX International Scientific Conference of Young Scientists and Specialists (AYSS-2016)
→
Europe/Moscow
Description
The XX International Scientific Conference of Young Scientists and Specialists (AYSS-2016) will be held on 14-18 March 2016 and will be dedicated to the 60th anniversary of the Joint Institute for Nuclear Research. The Conference is held annually and attended by students, PhD students, young scientists and specialists from scientific centers over the world. The proceedings will be published. The papers recommended by the Competition Committee will be submitted for publication in refereed journals. Participation in the Conference is confirmed by a certificate.
|
TOPICS Within the framework of the Conference leading scientists will give lectures on the recent theoretical, experimental and applied investigations carried out in JINR with emphasise on the major results obtained at JINR during its history. In the call for abstracts, we are inviting contributions on the following topics:
|
PARTICIPANTS
Students, PhD students, young scientists and specialists under 35 years from all over the world are invited to participate in the Conference with oral or (and) poster presentations. The registration will be open until February 21, 2016. Right after the registration you will receive a confirmation about your participation from the Organizing Committee. The abstracts of presentations will be accepted until January 17, 2016.
| Programme Committee: | Organizing Committee: |
| Chairman: G.D. Shirkov (JINR) | Co-chairman: A.V. Friesen |
| D.V. Peshekhonov (VLHEP JINR) | Co-chairman: V. Chudoba |
| A.V. Guskov (DLNP JINR) | A. Baimukhanova |
| S.N. Nedelko (BLTP JINR) | A.A. Bezbakh |
| O. Culicov (FLNP JINR) | I. Chuprakov |
| A.V. Karpov (FLNR JINR) | L. Ježková |
| D.V. Podgainy (LIT JINR) | E.I. Krupko |
| I.V. Koshlan (LRB JINR) | O.N. Matyukhina |
| Ş.H. Tanyıldızı | |
| Yu.S. Severukhin | |
| М.V. Shumeyko | |
| T.N. Zaikina |
The WORKING LANGUAGE of the Conference is English.
REGISTRATION FEE is 2500 RUB.
Registration fee covers organizing expenses, coffee breaks and social programme.
SECTIONS
During the conference, the participants will present their reports in ten topical sections.
AYSS 2016 COMPETITION
A JINR Prize competition will be held for young scientists and specialists who make oral presentations at the Conference (poster presentations are not eligible for the competition). The best presentation in each section will be specially awarded.
Proceedings Rules
-
-
Registration
What should be description?
-
Opening Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
09:30
Coffee break/Photo
-
Plenary session: Trubnikov G. V. "Status and Development of the JINR Research Infrastructure " Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
Plenary session: Naumov D. V. "Frontiers in neutrino physics" Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
12:00
Lunch
-
13:00
Coffee break
-
Oral session: Applied Research: Section 1, Part 1 Lecture hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Lecture hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
Oral session: Experimental Nuclear Physics: Section 1, Part 1 Lecture Hall Blokhintsev, 4th floor (Bogoliubov Laboratory of Theoretical Physics)
Lecture Hall Blokhintsev, 4th floor
Bogoliubov Laboratory of Theoretical Physics
-
Oral session: Life Science: Section 1, Part 1 DIAS Hall, basement floor (Bogoliubov Laboratory of Theoretical Physics)
DIAS Hall, basement floor
Bogoliubov Laboratory of Theoretical Physics
-
Oral session: Theoretical Physics: Section 1, Part 1 Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
Plenary session: Belotelov I. "JINR outreach programs" Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
Oral session: Applied Research: Section 1, Part 2 Lecture hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Lecture hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
Oral session: Experimental Nuclear Physics: Section 1, Part 2 Lecture Hall Blokhintsev, 4th floor (Bogoliubov Laboratory of Theoretical Physics)
Lecture Hall Blokhintsev, 4th floor
Bogoliubov Laboratory of Theoretical Physics
-
Oral session: Life Science: Section 1, Part 2 DIAS Hall, basement floor (Bogoliubov Laboratory of Theoretical Physics)
DIAS Hall, basement floor
Bogoliubov Laboratory of Theoretical Physics
-
Oral session: Theoretical Physics: Section 1, Part 2 Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
Satellite event to lecture Belotelov I.: "Masterclass on CMS data analysis" 437 (JINR University Center)
437
JINR University Center
"Masterclass on CMS data analysis"
Location: Laboratory of Information Technology, room 437 of JINR University Center
-
-
-
Plenary session: Ivanov I. "The first results of the Large Hadron Collider" Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
09:00
Coffee break
-
Plenary session: Blaschke D. "Boiling dense QCD. Theory and event simulation for collisions at NICA and FAIR energies" Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
09:30
Coffee break
-
09:30
-
Plenary session: Grigorenko L. V. "Light exotic nuclei: beyond the nuclear stability." Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
11:30
Lunch
-
Oral session: Experimental Nuclear Physics: Section 2 Oval lecture room, 2nd floor (Dzhelepov Laboratory of Nuclear Problem)
Oval lecture room, 2nd floor
Dzhelepov Laboratory of Nuclear Problem
-
Oral session: High energy physics: Section 1 Conference hall (Dzhelepov Laboratory of Nuclear Problems,)
Conference hall
Dzhelepov Laboratory of Nuclear Problems,
-
Oral session: Theoretical Physics: Section 2 Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
Oral session:Condensed Matter Physics: Section 1 Lecture hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Lecture hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
14:30
Coffee break
-
Oral session: Applied Research: Section 2 Lecture hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Lecture hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
Oral session: Life Science: Section 2 Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
Oral session: Mathematical Modeling and Computational Physics: Section 1 Conference hall (Dzhelepov Laboratory of Nuclear Problems,)
Conference hall
Dzhelepov Laboratory of Nuclear Problems,
-
Oral session: Particle accelerators and nuclear reactors: Section 1 Lecture Hall Blokhintsev, 4th floor (Bogoliubov Laboratory of Theoretical Physics)
Lecture Hall Blokhintsev, 4th floor
Bogoliubov Laboratory of Theoretical Physics
-
Poster session
-
-
-
Plenary session: Korenkov V. V. "The Development Trend of Information Technology at JINR" Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
09:30
Coffee break
-
Plenary session: Krasavin E. A. "55 years of radiobiological research at JINR'S accelerators" Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
Plenary session: Gikal B. "Accelerator complex of FLNR" Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
12:00
Lunch
-
Oral session: High energy physics: Section 2, Part 1 Lecture Hall Blokhintsev, 4th floor (Bogoliubov Laboratory of Theoretical Physics)
Lecture Hall Blokhintsev, 4th floor
Bogoliubov Laboratory of Theoretical Physics
-
Oral session: Information Technology: Section 1, Part 1 Lecture hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Lecture hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
Oral session: Mathematical Modeling and Computational Physics: Section 2, Part 1 DIAS Hall, basement floor (Bogoliubov Laboratory of Theoretical Physics)
DIAS Hall, basement floor
Bogoliubov Laboratory of Theoretical Physics
-
Oral session: Theoretical Physics: Section 3, Part 1 Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
15:00
Coffee break
-
Oral session: High energy physics: Section 2, Part 2 Lecture Hall Blokhintsev, 4th floor (Bogoliubov Laboratory of Theoretical Physics)
Lecture Hall Blokhintsev, 4th floor
Bogoliubov Laboratory of Theoretical Physics
-
Oral session: Information Technology: Section 1, Part 2 Lecture hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Lecture hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
Oral session: Mathematical Modeling and Computational Physics: Section 2, Part 2 DIAS Hall, basement floor (Bogoliubov Laboratory of Theoretical Physics)
DIAS Hall, basement floor
Bogoliubov Laboratory of Theoretical Physics
-
Oral session: Theoretical Physics: Section 3, Part 2 Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
-
-
Plenary session: Negoita F. "ELI-NP project: nuclear physics with lasers" Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
09:30
Coffee break
-
Plenary session: Lychagin E. V. "The Ultra Cold Neutrons - an everlasting challenge" Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
Plenary session: Kazakov D. I. "Particle Physics after Higgs Boson Discovery" Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
12:00
Lunch
-
AYSS 2016 competition Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
1
Development of the CBM RICH readout and DAQWe would like to present the results of the comparison of two different types of readout and data acquisition systems (DAQ) through the example of CBM RICH DAQ. Two triggerless DAQ systems are characterized – one based on nXYTER chip and SysCore readout controller and second based on PADIWA front-end board and multi-functional TRB board. Measurement of time characteristics in laboratory and beam situations of the second readout chain is performed, in particular precision of leading edge timestamp detection by separate components and whole chain. The method of software timestamp correction aimed at the performance is developed. The method for measuring luminescence time profile is developed and applied to the wavelength shifter decay time determination. In order to perform the listed tasks a test setup has been built in the laboratory, measurements have been done, corresponding unpacking and analysis software modules have been developed and obtained results have been analyzed. The source of the signal in CBM RICH is the modern Hamamatsu H12700 multi-anode photomultiplying tube (MAPMT). This PMT has outstanding characteristics – high and uniformly distributed over cathode quantum efficiency, low noise and cross-talk, small gaps between the sensitive areas. nXYTER chip allows to register the amplitude of the input signal together with the timestamp of the leading edge of the input signal. This chip splits the input signal into two. First channel is processed asynchronously by a relatively fast shaper and is needed to detect the timestamp of the input pulse. Second channel is processed by the synchronous electronics detecting pulse amplitude using relatevily slow shaper. PADIWA and TRB are boards which realize most of the functionality using FPGA: PADIWA is a preamplifier and discriminator and TRB is usually programmed such that 4 of 5 available FPGAs work as time-to-digit converters (TDC) and 5th as data concentrator.Speaker: Mr Egor Ovcharenko (JINR, ITEP)
-
2
Heterogeneous cluster HybriLIT: New possibilities for the development of parallel applicationsIn order to increase the efficiency of work on the heterogeneous cluster HybriLIT, there appears a need to develop an information-computing environment for work with parallel programming technologies used in the development of high performance applications and for carrying out computations by means of resources of the heterogeneous cluster. In order to provide new possibilities for a more efficient work on the cluster, the following software has been installed on the cluster: • SLURM (Simple Linux Utility for Resource Management); • CernVM-FS (CERN virtual machine file system); • EOS (file system); • NFS (network file system); • MODULES. With an increasing number of users of the cluster, in order to provide new possibilities for efficient work management and mutual development of projects, new services such as GitLab [1] and FreeIPA [2] have been introduced. Other services provided for users include: • HybriLIT website [3]; • HybriLIT User Support project in Project Management Service [4]; • Indico service [5]. References: 1. GitLab service: gitlab-hybrilit.jinr.ru 2. FreeIPA: dobby.jinr.ru 3. HybriLIT portal: hybrilit.jinr.ru 4. Project Management Service: pm.jinr.ru 5. Indico service: indico-hybrilit.jinr.ruSpeaker: Shushanik Torosyan (LIT JINR)
-
3
Numerical Modelling of Eddy Current Non-Destructive Evaluation in Material Defects Detection StudiesThis paper proposes an approach to evaluate the detection possibility and characteristics of material defects using numerical modelling, together with characterizing the capability and reliability of using eddy current non-invasive inspections. Eddy-Current (EC) inspection represents an essential method for the electromagnetic non-destructive detection/evaluation (NDE) of cracks in conductive materials, with its main applications being found in the examination of aircraft, particle accelerators, and other engineering constructions. The method is based on the detection of the magnetic field produced by eddy currents induced in the specimen being tested. The presence of a crack disturbs the flow of the eddy currents, thus producing a magnetic field perturbation dependent on the position and shape of the defect itself. Variations in the electrical conductivity and magnetic permeability of the test object material, and the presence of defects in the object causes a change in eddy current and a corresponding change in phase and amplitude that can be detected by measuring the impedance changes in the magnetic field generating coil, which is a telltale sign of the presence of defects. The NDE methods are characterized in a statistical manner by probability of detection (POD) assessments. The result will be different when evaluating different materials, geometries, defect types and also by the specified procedure settings. The nature of the method is complex and there is therefore a need for deeper understanding that may be gained from mathematical models. Such models can have several objectives as for example procedure and equipment optimization or understanding of the method capability and reliability.Speaker: Dr Emilia Apostol (National Institute for Research&Development in Electrical Engineering ICPE-CA, Buharest, Romania)
-
4
Reconstruction of diffractograms in X-ray imaging of biological objects using Bragg MagnifierWe present the wave propagator determination and improved phase retrieval algorithm invented specifically for imaging of biological objects using Bragg Magnifier Microscope (BMM). The robustness of the algorithm is tested on different samples and the results are shown. First, it is applied to the experimentally measured diffractograms of well-defined samples of polystyrene spheres and siemens star. After achieving success with their analytical forms, we present the reconstruction of the more complex biological object - model organism Tardigrade, where we also deal with the phenomenon of phase wrapping. The obtained resolution of the reconstructed images is determined to be between 0.5 and 1 μm. To speed up our numerical tool, we implemented it on GPU allowing us to reconstruct a single image in few minutes. Results confirm the potential of imaging of biological objects using BMM with the submicron resolution.Speaker: Stanislav Hrivnak
-
5
Study of deep inelastic reactions within the multidimensional dynamical model of nucleus-nucleus collisionsIn the present work, the theoretical analysis of deep inelastic collisions (DIC) with heavy ions is performed based on the dynamical model of ion-ion collisions. Studying of this type of nuclear reactions allows one to extract the information about complex interaction of heavy ions with each other leading to the significant dissipation of the initial kinetic energy and the exchange of a large number of nucleons. In addition, DIC is a promising method of producing new isotopes of heavy and superheavy elements unavailable for obtaining in other reactions (fusion, fragmentation). Developed in FLNR JINR the multidimensional dynamic model of nucleus-nucleus collisions allows one to calculate the energy, charge (mass) and angular distributions of products of reactions with heavy ions. This model was tested by well-measured DIC reactions: 136Xe + 209Bi and 136Xe + 208Pb. The calculated characteristics of DIC obtained within our model are in good agreement with the corresponding experimental values.Speaker: Vyacheslav Saiko (JINR)
-
6
Effects of finite correlation time and compressibility on the active-to-absorbing-state phase transition: renormalization group approachThe direct bond percolation process is studied in the presence of random velocity fluctuations. Using Doi approach a coarse grained field-theoretic action is obtained which captures universal properties of the model near its second order phase transition. Velocity field is modeled by the stochastic Gaussian field with finite correlation time and compressibility taken into account. The multiplicative renormalizability of the model is proven and the renormalization procedure is then performed to the one-loop order. Stable fixed points of the renormalization group are determined and corresponding regions of stability are calculated within the three-parameter (ε,y,η) expansion. The model exhibits eight distinct universality classes. Some of them are already well known: the Gaussian (free) fixed point, a directed percolation without advection, and a passive scalar advection. The remaining points correspond to new universality classes, for which an interplay between advection and percolation is relevant.Speaker: Dr Tomas Lucivjansky (University of Duisburg-Essen)
-
7
Theoretical investigation of the resonance states of low-dimensional two-body system in external electric fieldThe model of a two-dimensional (2D) hydrogen atom in external electric field is investigated. Due to the anisotropy of the influenced interaction the partial wave analysis is ineffective. The algorithm for the numerical solution of the 2D time-dependent Schroedinger equation with anisotropic interaction is proposed. The good convergence and advantages of the algorithm are presented. The good agreement of the numerical results with perturbative theory results for the 2D hydrogen atom in weak external static electric field was obtained. Two methods of the time-dependence of the wave function integration were compared - the split-operator method is much faster than the conventional Crank–Nicolson scheme and has the same accuracy. The verified algorithm can be applied to the investigation of the shape and structure of resonance states, e.g. their energies and widths, of the 2D hydrogen atom in external electric field (Stark effect).Speaker: Mr Eugene Koval (BLTP JINR)
-
8
Gauged Aloof Baby Skyrme ModelI present a study of U(1) gauged modification of the 2+1 dimensional planar Skyrme model with a particular choice of the symmetry breaking potential term which combines a short-range repulsion and a long-range attraction. In the absence of the gauge interaction the multi-solitons of the model are aloof, they consist of the individual constituents which are well separated. Peculiar feature of the model is that there are usually several different stable static multi-soliton solutions of rather similar energy in a topological sector of given degree. I investigated the pattern of the solutions and find new previously unknown local minima. It is shown that coupling of the aloof planar multi-Skyrmions to the magnetic field strongly affects the pattern of interaction between the constituents. I analyse the dependency of the structure of the solutions, their energies and magnetic fluxes on the strength of the gauge coupling. It is found that, generically, in the strong coupling limit the coupling to the gauge field results in effective recovering of the rotational invariance of the configuration.Speaker: Albert Samoilenka (Department of Theoretical Physics and Astrophysics, BSU Minsk)
-
9
Magnetic field buoyancy in accretion disks of young starsWe investigate fossil magnetic field of accretion disks of young stars. It is assumed that Parker instability leads to the formation of the flux tubes of the toroidal magnetic field in regions of the effective generation of the magnetic field. We modify our magneto-gas-dynamic model of accretion disks [1] in order to take into account buoyancy of the toroidal magnetic field. Stationary solution of the induction equation is written in the form in which buoyancy can be treated as the additional mechanism of the magnetic flux escape. We calculated intensity of the fossil magnetic field of accretion disks of young T Tauri stars using the modified model. We consider cases when cross-section radius a of the magnetic flux tubes is 0.1H, 0.5 H or 1H, where H is the accretion disk scale height. Calculations show that buoyancy limits magnetic field intensity at the level comparable with the intensity of the vertical magnetic field component for the case a=0.1H. Applications of the results to the activity of young stellar objects are discussed. Acknowledgements. This work is supported by Russian Science Foundation (project 15-12-10017). References 1. Dudorov A.E., Khaibrakhmanov S.A. Fossil magnetic field of accretion disks of young stars // Astrophys. Space. Sci. – 2014. – V. 352. – Iss. 1. – P. 103-121.Speaker: Dr Sergey Khaibrakhmanov (Ural federal university)
-
10
Temperature Dependent Hadronic Bag and QGP Phase Transition in Dual QCDBased on the magnetic symmetry structure of non-Abelian gauge theories, a dual QCD gauge theory is constructed which takes into account the local structure as well as the topological structure of the color gauge group into its dynamics and contains two potentials, the electric and the magnetic potentials in a dual-symmetric way. Using the dual version of QCD in thermal domain following the partition function approach and the grand canonical ensemble formulation, the phase transition from hadron to QGP phase has been investigated within the framework of temperature dependent hadronic bag in the entire T-μ plane. The various thermodynamic properties including pressure, energy density, entropy density, speed of sound and specific heat of the hadron/QGP phase have been investigated and shown to give the firm evidence of the first order phase transition. The profile of the pressure has been shown to be continuous function of the temperature across the phase transition and energy densities have finite jump discontinuities at critical temperature with latent heat. For zero chemical potential it has been shown that the first-order QGP phase transition turns into a rapid crossover. All the independent thermodynamic quantities are exponentially suppressed below the critical temperature and rather slowly approach their Stefan-Boltzmann limits at high temperatures. The interfacial surface tension has also been calculated and found to be proportional to the cube of transition temperature. These predictions are in remarkable agreement with lattice and MIT bag model results.Speaker: Ms Garima Punetha (Kumaun University Nainital)
-
11
Experimental cross sections for alpha particle induced reactions on p-nucleiPreliminary alpha capture cross sections on p-nuclei at energies close to the Gamow window will be presented. The cross section were measured by means of the activation method using an alpha beam delivered by the IFIN-HH tandem accelerator. The induced activities were measured in close-to-detection geometry using two large volume HPGe detectors in a low background passive shielding.Speaker: Dr Andreea Oprea (Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH))
-
12
Background suppression in HPGe detectors using Pulse Shape Discrimination methodsTo achieve low background in rare events physics experiments, several techniques are used. Apart from external veto and shielding, one can recognize the physical process taking place in the detector by analyzing the pulse shape of the detector signal. A presented discrimination method between multi-site and single-site energy deposition events in High Purity Germanium detectors is performed on the basis of the shape of preamplifier's signal rising edge, using multivariate classifiers (Multi Layer Perceptron Neural Networks and Projective Likelihood).Speaker: Mr Krzysztof Panas (Jagiellonian University)
-
1
-
15:00
Coffee break
-
AYSS 2016 competition Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
13
FLUKA and GEANT4 simulations for studying the production of 6HeIn this paper the experimental results and simulation results of the production of the exotic 6He nuclei with the use of the 22 MeV electron beam provided by the MT-25 microtron are presented. This method for obtaining 6 He nuclei may turn out to be one of the most optimal and inexpensive as compared with other methods, which are used for the production of exotic nuclei.Speaker: Mrs Raushan Kabytayeva (FLNR, JINR)
-
14
New molecular-ionic ferroelectric based on diisobutylammonium cationFerroelectric crystals are import and basic materials for technological applications in capacitors, pyroelectric, and electrooptical devices. Their nonlinear characteristics were found to be very useful, for example, in optical second-harmonic generators and other nonlinear optical devices.[1] Much of the attention in this field has been focused on developing ferroelectric inorganic compounds such as KH2PO4 (KDP),[2] perovskite-type compounds (BaTiO3) and LiNbO3.[3] Recently, the molecule-based ferroelectrics, simple alkylammonium organic salts: diisopropylammonium chloride (DIPAC) and diisopropylammonium bromide (DIPAB) have been synthesized and characterized.[4,5] They undergo a reversible phase transition from a high temperature paraelectric phase (2/m) to a low temperature ferroelectric phase (2) at ca. 440 K and 425 K, respectively with the spontaneous polarization resulting from the ordering of the organic cations (order–disorder-type ferroelectric). A particular behavior of their dielectric parameters (especially DIPAB) distinguishes them from the formerly reported organic, hydrogen-bonded ferroelectrics.[5,6] This compound is characterized by an extremely high value of the spontaneous polarization (23 μC cm^-2), a high Curie temperature (426 K), a high dielectric constant, small dielectric losses and a low coercivity field.[5,6] Additional qualities of DIPAB are: facility of preparation, low cost, nontoxicity, and good thermal stability. DIPAB also shows a strong piezoelectric effect and has a well defined ferroelectric domain structure. Recently, we have synthesized and characterized the physicochemical properties of a novel biferroic material: diisobutylammonium bromide [i-(C4H9)2NH2][Br] (DIBAB) by thermal, electric and spectroscopic measurements.[7] DIBAB exhibits unique and unexpected properties related to ordering of chains of diisobutylammonium cations. It undergoes a strongly discontinuous phase transition (at 285/286 K, cooling/heating respectively) driven by an order–disorder mechanism strongly coupled to macroscopic deformation. The polar properties of DIBAB in the low temperature phase have been studied by the pyroelectric current measurements. The spontaneous polarization was found to be reversible in an external electric dc field (±6 kV cm^−1) and equals 5×10^−2 μC cm^-2. This corroborates the structural findings concerning the orientation of molecular permanent dipoles. The behavior of the spontaneous polarization also resembles that of a canted ferromagnetism.[8] The ferroelasticity in DIBAB was confirmed by the optical observation of the ferroelastic domains under polarizing microscope. The crystal shows a phase growth and a domain pattern resembling that of martensitic phase transitions. It is the most spectacular result of this work and the first example of martensitic transition in the organic compound. This research was supported by the Ministry of Science and Higher Education (Poland) under grant no. IP 0356/IP2/2015/ 73 (A. Piecha-Bisiorek). 1. J. F. Scott, Science, 2007, 315, 954. 2. G. Busch and P. Scherrer, Naturwissenschaften, 1935, 23, 737. 3. Ferroelectrics and Related Substances, ed. Y. Shiozaki, E. Nakamura and T. Mitsui, Landolt–Bornstein New Series, Springer-Verlag, Berlin, 2006, vol. III/36. 4. D.-W. Fu, W. Zhang, H.-L. Cai, J.-Z. Ge, Y. Zhang, R.-G. Xiong, Adv. Mater. 2011, 23, 5658. 5. D.-W. Fu, H.-L. Cai, Y. Liu, Q. Ye, W. Zhang, Y. Zhang, X.-Y. Chen, G. Giovannetti, M. Capone, J. Li, R.-G. Xiong, Science 2013, 339, 425. 6. A. Piecha, A. Gągor, R. Jakubas, P. Szklarz, CrystEngComm 2013, 15, 940. 7.A. Piecha-Bisiorek, A. Białońska, R. Jakubas, P. Zieliński, M. Wojciechowska, M. Gałązka, Adv. Mater. 2015, 27, 5023. 8 L. Tauxe, J. Gee, H. Staudigel, J. Geophys. Res. 1998, 103, 17775.Speaker: Ms Martyna Wojciechowska (University of Wroclaw)
-
15
Synthesis and characterization of spider silk calcite compositeBiomineralization is a process in which living organisms form minerals from organic and inorganic components. By its mechanical properties biominerals surpass minerals that spontaneously form without presence of organic molecules. Biomineralization inspired scientists to create new materials via combination of biomolecules and inorganic molecules. There is a growing interest in mimicking biomineralization as a potential route in synthesis building block for bone replacement materials. Spider silk posses excellent mechanical properties,tenacity and elasticity and it has been used as a template for calcite mineralization to improve load bearing strength of osteoconductive calcite. The samples were obtained by mimicking biomineralization for five days in order to follow formation and growth of calcite on the surface of spider silk. XRD and FTIR spectroscopy were used to observe formation of crystal phase. Microstructure, crystal size and its morphology were studied by means of FESEM.Speaker: Ms Svetlana Dmitrovic (Vinča Institute of Nuclear Sciences, Materials Science Laboratory, Belgrade University, Belgrade, Serbia)
-
16
Ultra-compact portable gamma detector system based on CdTeIEAP CTU group in cooperation with NRPI (National Radiation Protection Institute) and other partners have interests in the field of ultra-compact portable radiation detectors. Detectors of this type can be mounted on UAVs (unmanned aerial vehicles - such as very popular RC drones or model RC aircraft) and perform precise inexpensive large area radiation scans without people being present in the affected area. This is now in high demand and much needed in the event of incident with releases of nuclear material (like Fukushima Daiichi nuclear disaster). For this purpose, a prototype of ultra-compact portable gamma detector system based on CdTe detector was constructed. Preliminary results of measurements with this device and its features will be presented.Speaker: Mr Petr Kouba (IEAP, CTU Prague)
-
17
Influence of the conical shape of the latent tracks near the irradiated surface on the correct measurements of the latent track sizeThe difference in track parameters registered in some oxides at the same energy loss and different ion beam energy, so called “velocity effect” have been evidenced by number of experimental methods. Most of corresponding data on damage cross-section and then on the track radii were found by means of Channelling Rutherford Backscattering Spectroscopy or X-ray diffraction while the contribution of TEM results in the whole data array still remains very limited. In this report we give analysis of existing TEM results related the “velocity effect” and consider how the conical shape of latent tracks observed in the subsurface region of the swift heavy ion irradiated oxides may affect the correct determination of the track size as well as the critical electronic energy loss for track formation. The discussion is based on our cross-sectional TEM studies of high energy Bi and Xe ion induced latent tracks in TiO2 and Al2O3 single crystals.Speaker: Mr Maxim Saifulin (JINR, Dubna, Russia)
-
18
γ-ray induction and repair of DNA double-strand breaks in rat hippocampus and cerebellum cells.Radiation protection both on Earth and in space is based on the principles of risk justification and limitation. The contemporary concept of the radiation risk of manned interplanetary flights incorporates the influence of space radiation on the CNS functions. It is expected that possible space radiation risks for the CNS, like altered cognitive functions (including in short-term memory disorders), reduced motor functions, and behavioral changes are connected with damage on the molecular and cellular levels. These CNS changes can also originate in the radiation-induced DNA damage arising in neuronal and non-neuronal cells of specific brain areas. DNA double-strand break (DSB) is the most harmful damage for the cell. To protect the DNA molecule from such changes there are mechanisms of DNA repair which maintain genome integrity in an intact state. Investigation of DNA DSB induction and repair is of special interest in cells of the hippocampus and cerebellum. The hippocampus is the brain area performs the function of the production of new neurons by neurogenesis and has been associated with radiation-induced cognitive decline in spatial learning and memory. The cerebellum is involved in the coordination of voluntary motor movement and contains roughly half of the brain's neurons. For the analysis of the induction and repair of DNA DSBs, Spraque Dawley rat heads were irradiated with 1, 3, and 5 Gy 60Co γ-rays. DNA DSBs were visualized by immunohistochemical staining of paraffin-embedded rat brain tissues. Tissue slices were processed by the standard procedure of immunostaining with fluorescent antibodies for the phosphorylated histone H2AX (γ-H2AX) and repair protein 53BP1 – DSBs markers. Quantification of colocalized γH2AX/53BP1 foci allows evaluation of the quantity and quality of DNA DSB and their repair in hippocampus and cerebellum cells. Fluorescent images hippocampus sections with visualized γH2AX foci in were obtained.Speaker: Ms Tatyana Bulanova (associate scientist, Joint Instituite for Nuclear Research, LRB)
-
19
Effect of NOS-inhibitor NS23 on radiation-induced alteration in hemapoiesis and survival of irradiated animalsSuppression of the synthesis of the endogenous nitric oxide after injection of NOS-inhibitors is a promising approach to induce radioresistance. Previously we have shown that radioprotective activity of some isothiourea derivatives had a correlation with their NOS-inhibitory activity. In this study we investigated the influence of one of our newly synthesized N,S-substituted derivative of isothiourea with proven NOS-inhibitory activity on recovery from bone marrow syndrome of acute radiation injury. Materials and methods. In this research we used substance NS23, an N,S-substituted derivative of isothiourea. Male F1 (CBA×C57Bl6j) mice were exposed to gamma-radiation with dose rate 75-80 mGy/s. To investigate radioprotective activity of new substance we used standard radiobiological tests: 30-days survival of mice and survival of their bone marrow clonogenic cells by methods of splenic endo- and exogenous colony formation. Also we estimated the quantity of cells in bone marrow and peripheral blood using the automatic hematology analyzer Abacus Junior Vet (Diatron, Austria). Results. Using the splenic exogenous colony formation method we showed that injection of NS23 before irradiation facilitated survival of bone marrow clonogenic cells. Statistically significant radioprotective effect was observed when NS23 was used at dose 1/8 LD16 (40 mg/kg), at dose 1/4 LD16 (75 mg/kg) the effect reached the maximum level and then, when NS23 was used at higher doses, its radioprotective effect remained virtually unchanged. The results of this study allowed to consider the dose 75 mg/kg of NS23 as optimal radioprotective dose for this animal species. Using the splenic endogenous colony formation method we studied the duration of the radioprotective effect. Statistically significant increase of clonogenic cell survival was observed so far in five minutes after NS23 administration, then radioprotective effect reached the maximum and was stable within an hour after injection. Although after an hour we observed some decline in the efficacy of NS23, nevertheless statistically significant radioprotective effect persisted for at least two hours. Thus, NS23 protected from radiation bone marrow clonogenic cells. It allowed us to expect that this substance had an effect on hemapoietic recovery after irradiation. At the same time many authors demonstrated the enhancement of migration and proliferative activity of hemapoietic clonogenic cells by NOS-inhibitors. Certainly all of this affects influenced the quantitative structure of peripheral blood of irradiated mice. When 75 mg/kg of NS23 had been used at 30 min before irradiation the severity of pancytopenia and manifestations of hemodepression were much less intensive than in control animals. Attenuation of radiation-induced hematopoietic changes by NS23 made this substance responsible for protection animals against radiation death. In our study we showed that this NOS-inhibitor protected no less than 90% mice irradiated with 9 Gy and wasn't inferior to the effectiveness of cystamine. Dose modification factor for NS23 was determined by different methods in independent experiments and amounted to 1,44 (1,26 ÷ 1,65) in 30-day survival test; 1,81 (1,29 ÷ 2,38) and 1,56 (1,21 ÷ 1,94) in exogenous splenic colony formation test. Summary. As a result NS23 strongly protected bone marrow clonogenic cells from radiation. It allowed this NOS-inhibitor to weaken radiation-induced hemapoietic disorders and largely ensure the survival of irradiated at medullary dose range animals. According to existing criteria of pharmacological selecting of potential radioprotective agents substance NS23 is definitely promising for further development. Carrying out its preclinical studies as emergency radioprotector seems quite appropriate.Speaker: Ms Viktoriya Makarchuk (A. Tsyb Medical Radiological Research Centre - branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation)
-
20
Metal uptake by cyanobacteria Spirulina platensis from single-and multi-component systemsThe process of lanthanum, chromium, uranium and vanadium accumulation and sorption by Spirulina platensis biomass from single- and multi-component systems was studied for biotechnological purposes. The influence of multi-component system on the spirulina biomass growth was less pronounced in comparison with the single-component ones. To trace the uptake of metals by spirulina biomass the neutron activation analysis was used. In the experiment on the accumulation the efficiency of studied metal uptake changes in the following order La(V) > Cr(III) > U(VI) > V(V) (single-metal solutions) and Cr(III) > La(V) > V(V)> U(VI) (multi-metal system). The process of metals biosorption was studied during a two-hour experiment. The highest rate of metal adsorption for single-component systems was observed for lanthanum and chromium. While for the multi-component system the significant increase of vanadium and chromium content in biomass was observed. The results of present work show that spirulina biomass can be efficiently applied for metal removal from industrial wastewater.Speaker: Dr Inga Zinicovscaia (Joint Institute for Nuclear Research)
-
21
Creation and results of experiments on a full scale model of the cold moderator in the central direction (CM 1) for IBR-2 reactor. Technical support and devices.In the plan of the modernization IBR-2 reactor around a reactor core will be installed 3 cryogenic neutron moderators. For slowdown neutrons in moderators use a mesitylene with m-xylene as frozen beads with a diameter of 3-4 mm. These pellets are served in a moderator chamber by a helium flow. Currently, one of the moderators (202) is already installed and working on the experiment. Given the positive experience of the moderator (202) is now commissioned a full-scale stand retarder 201 with reference to the premises. The report will be submitted to the moderator 201. The main problem of transportation is download pellets in a moderator chamber (pellets should raise up the height of 4 meters at an angle of 50 degrees). It condition is defined by the geometric position of the moderator in a reactor biodefense . Will present the results of experiments on the loading pellets into the moderator chamber and proposed the concept of a moderator with the continuous change of pellets without stop of the reactor cycle. In presentation will be show a cryogenic system for all cryogenic complex of cold moderator. It is including two cryogenic refrigerators 700 watt and 1200 watt. If necessary, refrigerators can replace each other.Speaker: Mr Konstantin Mukhin (JINR)
-
22
Matter effect in neutrino oscillations for NOvA experimentNOvA is an accelerator experiment at FNAL (USA) devoted for studying neutrino oscillations (electron neutrino appearance and muon neutrino disappearance in both neutrino and antineutrino modes). This is one of off-axis new generation experiments with two detectors sited at 14 mrad off the NuMI beam axis and separated by 810 km of the Earth crust. The nu_e appearance analysis aims to determine the neutrino oscillation mass spectrum and measure the CP violating phase. First results of the NOvA experiment based on 1 year statistics in neutrino mode were presented in 2015. In this talk we focus on matter effect in oscillation phenomenon — observing an enhancement in nu-mu to nu-e oscillations by passing nu-mu beam through the earth crust (in comparison with a vacuum case).Speaker: Ms Liudmila Kolupaeva (JINR)
-
23
Challenges and progress in the design of the Fast Interaction Trigger for the ALICE upgrade.The Fast Interaction Trigger (FIT) [1] will be installed as part of the ALICE upgrade [2] during the Long Shutdown 2 of the LHC in 2019. To cope with increased luminosity and event rate after LHC upgrade ALICE has to modify most of its detector subsystems, which includes replacing currently used T0, V0 and FMD with FIT. Because FIT is located at the very center of ALICE, the accessibility will be very limited after the upgrades of other subdetectors are installed. Thus early and reliable design, as well as thorough testing, is required. This is also why FIT modules should be radiation hard and resist ageing. Moreover FIT is expected to achieve exceptional time and amplitude resolution, which in turn translate to the (independent from tracking) vertex position estimation and multiplicity determination (event plane, centrality) at high pseudorapidity range. This talk will present the latest design concepts of the FIT detector module along with the beam test results carried out at CERN in the fall of 2015 in light of their importance for the overall future performance of ALICE. [1] W.H Trzaska, Synergy in Fast Timing R&D, talk at NICA Days 2015 in Warsaw [2] The ALICE Collaboration, Technical Design Report for the Upgrade of the ALICE Readout and Trigger System (http://cds.cern.ch/record/1603472?ln=en)Speaker: Mr Maciej Slupecki (University of Jyväskylä)
-
24
Femtoscopic in MPD experimentHeay Ion Collsion (HIC) are used for study properties of matter that existed at early stage of the universe. One of main topics of those studies is structure of phase diargram of strongly interactin matter, different parts of this diagram can be studied by collisions of heavy ions with different energies. Such measurements will be also done in MPD (Multi-Purpose Detector) in NICA facility with is now under construction in Dubna. One of method used in analysys of HIC is femtoscopy, this method uses two-particle correlations to obtain information about space-time evolution of source of the particles. As part of preparations for MPD experiment some analysis with simulated data where performed. Three sets of simulations has been made, with and without viscosity of bulk dense matter, and with different type of phase transtion from Quark Gluon Plasma to hadronic matter - one of most interesting problems that will be studied by using MPD. Those analysis shown that system that creates particles during collision lives longer when first order phase transition occurs what was expected by theorist, however standard femtoscopic measurements are not suitable tool for study such effects as it was expected. It's mean that new methods or combining more observables toghether must be used like imaging methods.Speaker: Mr Daniel Wielanek (Warsaw University of Technology, Faculty of Physics)
-
25
Fast neutron background in the Daya Bay experimentThe precise measurements of neutrino mixing angle \theta_{13} and square of mass splitting are the main goals of the Daya Bay experiment. There are several types of systematic uncertainties in that measurement. The backgrounds induced by cosmic muons(fast neutrons, unstable isotopes of Li and He) are important sources of systematic errors because signature of its' interaction in detector is indistinguishable from antineutrino interactions. The fast neutron background is produced by energetic neutrons created in interaction of cosmic muons with the material of the detector. We present study of the selection procedure for such events and preliminary results for its' rates and spectra based on data set from 2012 to 2015.Speaker: Mr Konstantin Treskov (JINR)
-
13
-
Banquet
-
-
-
Plenary session: Skuratov V. A. "Swift heavy ions in radiation material science". Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
09:30
Coffee break
-
Plenary session: Kulikov S. "How to build a neutron spectrometer? – The science behind the science" Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
Plenary session: Popeko A. "Synthesis of superheavy nuclei" Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
Closing Large Conference Hall, 2nd floor (Bogoliubov Laboratory of Theoretical Physics)
Large Conference Hall, 2nd floor
Bogoliubov Laboratory of Theoretical Physics
-
