Methods, Algorithms and Software for Modeling Physical Systems, Mathematical Processing and Analysis of Experimental Data
Leaders:  Gh. Adam P.V. Zrelov 
Participating Countries, Institutes and International organizations: Armenia, Australia, Azerbaijan, Belarus, Belgium, Brazil, Bulgaria, Canada, CERN, China, Czech Republic, France, Georgia, Germany, Greece, India, Italy, Japan,
Kazakhstan, Moldova, Mongolia, Poland, Portugal, Romania, Russia, Slovakia, South Africa, Switzerland, Taiwan, Tajikistan, USA, Vietnam.
Scientific Programme: Carrying out paramount advanced research in the field of computational mathematics and computational physics, directed to the creation of new mathematical
methods, algorithms, and software for the numerical or symbolicnumerical solution of topics arising in experimental and theoretical studies, by using the newest
computational tools, primarily the heterogeneous cluster HybriLIT. This subject area includes a wide spectrum of investigations underway at JINR in high energy physics,
nuclear physics, condensed matter physics and nanotechnologies, biophysics, information technologies, etc., which demand the development of new mathematical methods and
approaches for modeling physical processes, processing and analysis of experimental data, including the use of these studies in the NICA project, the neutrino programme
and other strategic goals of the Institute. A distinctive feature of these investigations is the close cooperation of LIT with research groups from all the JINR laboratories and from Member State institutions.
Expected main results in 2017:
 The development of effective QCDmotivated models for describing
properties of nuclear matter at NICA energies, computer simulations of the behavior of the critical points at the QCD phase diagram.
Threedimensional computer modeling of the magnetic field distribution in the superconducting magnets for NICA and SIS100 (FAIR).
Development of methods of investigation of the dimesoatom formation in processes of multiple particle production at high energies including the coherent birth of long lived nP states of ^{+} ^{} atoms.
Study within the microscopic optical potential model of the mechanisms of various nuclear processes, including preequilibrium processes in the reactions (p,alpha) ^{59}Co at energies from 65 to 160 MeV,
disintegration processes in the interactions of boron isotopes and other exotic nuclei with protons and nuclei, the inelastic interaction of pions with nuclei at (33)resonance energies.
Development and maintenance of the primary data processing program SAS for the YuMO spectrometer at IBR2. Implementation of data processing for the position sensitive detectors for isotopically scattering samples.
Numerical analysis of properties of Bose condensates with nonlocal interaction potentials.
Development of methods for numerical investigations of structures and bifurcation regimes in nonlinear models of condensed matter physics.
Mathematical modeling of beam dynamics for multipurpose isochronous cyclotrons.
Development of methodology, algorithms and programs for digital processing of arbitrary plane curves with the aim to obtain their analytic forms.
Bayesian automatic adaptive quadrature with scale dependent quadrature sums.
Numerical solution of boundary value problems for the nonlinear BoltzmannPoisson equations describing the interaction of protein macromolecules with the solvent.
Study of the applicability of fractal analysis methods for processing and systematization of the results of molecular dynamics simulations of the interaction of nanocluster beams with thin metal films.
Development of algorithms and software for predictive analysis and forecasting parameters of the IBR2M reactor (fluctuations of the pulse energies, the flow of liquid sodium through the core, etc.).
 Development and support of Glauber Monte Carlo program as well as adaptation of Geant4 FTF model for NICA/MPD and CBM experiments.
Development of the dataflow control system in the experiments of the NICA project.
Processing and analysis of data collected at the NUCLON experiment.
Software support of ATLAS experiment (maintenance of the TDAQ components previously developed in LIT; new developments: network monitoring dashboard, online TDAQ Log Manager)
Software development for the GEM tracking detector entering the detector complex of the BM@N experiment (development of algorithms and software for the simulation of realistic data with the microstrip GEM
camera; development and software implementation of algorithms for the reconstruction of the spatial coordinates of the points of interaction of the charged particles with the registering elements of the GEM
detector; software implementation of GEM detector models for the foreseen configurations planned in the upcoming sessions of the BM@N experiment).
BM@N: Event reconstruction with 20162017 Nuclotron data; development of algorithms and programs for the particle trajectories recognition in the MPD setup.
CMS: CSC local reconstruction improvement with high luminosity LHC data.
Development of VMRIA package for the automatic analysis of large spectra collected in experiments carried out on HRFD at IBR2.
Development of methods for automatic analysis of gamma spectra and software for automatic calibration of low statistics gamma spectra.
Development and adaptation of methods of data analysis to the conditions of small statistics and incomplete observations (estimated halflives).
Development of methods based on the generalized separate form factor model, for the analysis of experimental data of small angle neutron and synchrotron radiation on vesicular polydisperse nanosystems.
Adaptation of the algorithm L1 – recognition and track reconstruction of charged particles, based on the application of cellular automata, for the detector MVD of the CBM experiment.
Development of a system of testing and quality evaluation for the timeoriented clustering algorithms and the hit search and its software implementation for the STS detector of the CBM experiment.
Visualization of the procedure of the track reconstruction of charged particles in the MUCH detector of the CBM experiment.
Development of selection criteria of the rare decays J/ µ ^{+}µ ^{} using data from within the coordinate planes of the MUCH detector. Development of algorithms for recognition and reconstruction of rare decays
of light vector mesons, J/ e ^{+}e ^{}, recorded in the CBM experiment.
Vectorization and parallelization of the trajectory reconstruction algorithm of the charged muons registered by the MUCH detector.
Analysis of RICH detector data obtained in a test experiment at CERN. Software development for simulation and reconstruction of events recorded by the RICH detector. Optimization of the geometry of the RICH detector.
Software development of the data acquisition system (DAQ) and of the software interface between the DAQ and CBMRoot for the RICH detector online analysis.
Development, optimization and testing of algorithms for the event processing system FLES on multicore servers at LIT. Inclusion of the 4Dreconstruction time slices in CBMROOT. Study of the problem of possible event
cleavage in the border areas between neighboring time slices.
Development of a database system for the CBM experiment: 1) implementation of componentwise database adapted to the features of the various detectors of the CBM facility; 2) implementation of the structure of the geometric database.
Development of methods and algorithms for massive calculations of electrostatic potentials of molecules of DNA, RNA and protein factors, as well as maps of the surface of these biopolymers. Calculation at the HybriLIT cluster
of electrostatic potentials and surface maps of biopolymer molecules enabling solutions of biomolecular recognition problems.
Generation of random rough surfaces to simulate features of diffraction patterns at neutron reflection from the surface of nanostructured objects.
 Development and maintenance of the informationcomputing environment of the heterogeneous cluster HybriLIT.
Development of algorithms for numerical investigation of multidimensional models of evolutionary equations modeling physical processes in different materials under irradiation with heavy ions and pulsed beams, Josephson
barriers in hightemperature superconductors. Their code implementation for computations on HybriLIT.
Development of efficient algorithms for the solution of molecular dynamics equations on hybrid computing infrastructures.
Development of methods and MPI packages for the computation of multiple integrals for the study of processes of ionization and photoionization of the He atom, polyatomic molecules, and their ions.
Development and implementation of new parallel algorithms into the MCTDHB software complex and their adaptation to the new KNL architecture of the Intel Xeon Phi.
Development and maintenance of the Fitter program, including implementation of its parallel version.
HybriLIT devoted optimization of selected programs of the ROOT software package, in particular, improvement, using technologies of parallel computing, of the software implementation of the filling algorithms
of the special data structure Tree.
Elaboration of effective algorithms for solving elliptic nonlinear hpadapted finiteelement systems of equations and their program implementation on heterogeneous architectures.
Adaptation of the multibranch solutions of the TolmanOppenheimerVolkov system of equations to hybrid computing architectures.
Set up, testing and validation of different modules of Comsol Multiphysics® package and of the "CATIAGDML Geometry Builder" complex on the cluster HybriLIT and their adaptation for solving engineeringphysical
problems in JINR laboratories.
 Development and investigation of a new model of quantum networks with memory function.
Description of separable and entangled Xstates of twoqubit systems.
Calculation of relativistic corrections in the description of dynamics of spin particles in strong laser fields (for project ELINP, Romania).
Derivation, based on unitary representations of finite groups, of combinatorial algorithms and algorithms of statistical modelling of quantum systems.
Creation of a symbolicnumerical package implementing the finite element method with associated Hermite polynomials for the solution of equations describing the dynamics of lowdimensional fewparticle quantum systems.
Adaptation of the developed algorithms and codes to hybrid architectures.
Algorithmic construction of difference schemes inheriting the basic algebraic properties of the initial differential equations.
Computation of the renormalization constants for the twoloop propagator of quark mixtures.
Design and implementation of algorithms for computation of rotationalvibrational basis functions in the space of parameters describing quadrupole and octupole deformation of spherical nuclei.
Implementation in Lucid Common Lisp of the computer algebra system Reduce with a convenient user interface toward libraries of numerical programs.
List of Activities   Activity or experiment  Leaders  
 Laboratory or other Division of JINR  Main researchers

1.  Mathematical and computation methods for simulation of complex
physical systems  Gh. Adam I.V. Puzynin 


LIT
 S. Adam, P.G. Akishin, I.V. Amirkhanov,
E.A. Ayrjan, A.S. Àyriyan, I.V. Barashenkov,
M.V. Bashashin, I.L. Bogolubsky, N.D. Dikoussar,
H. Grigorian, Yu.L. Kalinovsky, T.V. Karamysheva,
D.S. Kulyabov, K.V. Lukyanov, D.V.A. Luu, A. Machavariani,
N.V. Makhaldiani, T.I. Mikhailova, G.J. Musulmanbekov,
E.G. Nikonov, G.A. Ososkov, D.I. Podgainy,
R.V. Polyakova, T.P. Puzynina, V.N. Robuk,
B. Saha, N.Yu. Shirikova, A.G. Soloviev, T.M. Solovieva, Yu.B. Starchenko, O.I. Streltsova, A.V. Volokhova, O.O. Voskresenskaya,
A. Wojczechowski, R.M. Yamaleev, E.P. Yukalova, E.V. Zemlyanaya


VBLHEP
 E.E. Donets, S. Gevorkyan, M.N. Kapishin, A.O. Kechechyan, H.G. Khodzhibagiyan, V.A. Nikitin, O.V. Rogachevski, W. Scheinast


BLTP
 A.V. Friesen, M. Hnatic, E.M. Ilgenfritz, R.V. Jolos, V.K. Lukyanov, V.D. Toneev, S.N. Vinitsky,
V.V. Voronov, V.I. Yukalov


FLNR
 A.G. Artukh, Yu.K. Kochnev, S.M. Lukyanov, Yu.E. Penionzhkevich, R.A. Rymzhanov, Yu.M. Sereda, V.A. Skuratov


FLNP
 A.V. Belushkin, N. Korepenova, S.A. Manoshin, A.I. Kuklin, A.I. Ivankov, Yu.N. Pepelyshev, D.V. Soloviev


DLNP
 L.G. Afanasiev, G.A. Karamysheva, I.N. Kiyan

2.  Software complexes and
mathematical methods for processing and analysis of experimental
data  P.V. Zrelov V.V. Ivanov 


LIT
 T.O. Ablyazimov, E.P. Akishina, V.P. Akishina,
E.I. Aleksandrov, I.N. Aleksandrov, D.A. Baranov,
S. Belogurov, O.Yu. Derenovskaya, A.A. Kazakov,
A.I. Kazymov, P.I. Kisel, B.F. Kostenko, G.E. Kozlov,
L.Yu. Kruglova, I.N. Kukhtina, A.A. Lebedev,
T.I. Mikhailova, M.A. Mineev, G.A. Ososkov, E.V. Ovcharenko,
V.V. Palichik, V.S. Rikhvitsky, V.N. Shigaev,
N.Yu. Shirikova, L.A. Siurakshina,
S.K. Slepnev, A.N. Sosnin,
V.A. Stepanenko, V.V. Uzhinsky, N.N. Voitishin,
A.V. Yakovlev, E.V. Zemlyanaya, E.I. Zhabitskaya,
V.B. Zlokazov


VBLHEP
 A.S. Galoyan, K.V. Gertsenberger, M.N. Kapishin, V.P. Ladygin, V. Lenivenko, A.I. Malakhov, S.A. Movchan, O.V. Rogachevsky, M.G. Sapozhnikov, N.D. Topilin


FLNR
 A.G. Artukh, A.S. Fomichev, Yu.E. Penionzhkevich, Yu.M. Sereda, Yu.G. Sobolev, Yu.S. Tsyganov, V.K. Utenkov


FLNP
 A.M. Balagurov, I.A. Bobrikov, M.A. Kiselev, D.P. Kozlenko, M.V. Frontasyeva


DLNP
 G.D. Alekseev, I.V. Bednyakov, V.A. Bednyakov, A.G. Olshevsky, D.B. Pontecorvo, A.S. Zhemchugov

3.  Numerical methods, algorithms and
software computationally adapted to multicore and hybrid architectures  Gh. Adam P.V. Zrelov O.I. Streltsova 


LIT
 E.I. Aleksandrov, I.V. Amirkhanov, A.S. Àyriyan,
E.A. Ayrjan, M.V. Bashashin, D.V. Belyakov,
A.M. Chervyakov, O. Chuluunbaatar, M. Kirakosyan, M.A. Matveev,
E.V. Ovcharenko, D.V. Podgainy, T.P. Puzynina,
A.A. Sapozhnikov, T.F. Sapozhnikova, N.R. Sarkar,
I. Sarkhadov, S.I. Serdyukova, Z.A. Sharipov,
A.G. Soloviev, T.M. Solovieva, Sh. Torosyan,
Z.K. Tukhliev, A.V. Volokhova, O.I. Yuldashev,
M.B. Yuldasheva, E.V. Zemlyanaya, E.I. Zhabitskaya,
M.I. Zuev


LITMICC
 V.V. Korenkov, V.V. Mitsyn, T.A. Strizh


FLNR
 P.Yu. Apel, V.A. Skuratov


BLTP
 D.B. Blashke, A.A. Bulychev, Yu.V. Popov, Yu.M. Shukrinov

4.  Methods, algorithms and software of computer algebra  V.P. Gerdt 


LIT
 V. Abgaryan, A.A. Bogolubskaya,
O. Chuluunbaatar, S.A. Evlakhov, A.A. Gusev,
A.M. Khvedelidze, V.V. Kornyak, A.M. Raportirenko,
I.A. Rogozhin, O.V. Tarasov, A.G. Torosyan,
D.A. Yanovich, E.P. Yukalova


BLTP
 A.V. Czhizhov, P. Fiziev, A.I. Titov, S.I. Vinitsky, V.I. Yukalov

Collaboration 
Country or International Organization  City  Institute or Laboratory 
Armenia
 Yerevan
 YSU



 IIAP NAS RA



 RAU



 Foundation ANSL


Australia
 Sydney
 Univ.


Azerbaijan
 Baku
 IP ANAS


Belarus
 Minsk
 IM NASB


 Gomel
 GSTU


Belgium
 Brussels
 ULB


 Liege
 ULg


Brazil
 Sao Carlos, SP
 IFSC USP


Bulgaria
 Sofia
 IMI BAS



 INRNE BAS



 SU


 Plovdiv
 PU


Canada
 Edmonton
 U of A


 Toronto
 IBM Lab


CERN
 Geneva
 CERN


China
 Hangzhou
 ZJU


Czech Republic
 Prague
 CTU


France
 Nancy
 UL


 Nantes
 SUBATECH


Georgia
 Tbilisi
 UG



 TSU



 GTU


Germany
 Bonn
 UniBonn


 Darmstadt
 GSI


 Dresden
 IFW


 Frankfurt/Main
 Univ.


 Giessen
 JLU


 Hamburg
 Univ.


 Heidelberg
 Univ.


 Jena
 Univ.


 Wuppertal
 UW


 Freiberg
 TUBAF


 Kassel
 Uni Kassel


 Marburg
 Univ.


 Munich
 LMU


Greece
 Thessaloniki
 AUTH


India
 Calcutta
 JU


Italy
 Turin
 INFN


 Bari
 UniBa


Japan
 Osaka
 Kansai Univ.


Kazakhstan
 Almaty
 INP


Moldova
 Chisinau
 IAP ASM


Mongolia
 Ulaanbaatar
 NUM



 MUST


Poland
 Krakow
 NINP PAS


 Lublin
 UMCS


 OtwockSwierk
 NCBJ


 Warsaw
 WUT


 Wroclaw
 UW


Portugal
 Lisbon
 UL


Romania
 Bucharest
 IFA



 IFINHH



 ISS



 UB


 ClujNapoca
 INCDTIM


Russia
 Moscow
 IPMech RAS



 ITEP



 NNRU "MEPhI"



 KIAM RAS



 MSU



 PFUR



 SINP MSU



 RCC MSU



 GPI RAS



 NRC KI



 ICS RAS


 Dubna
 Dubna Univ.


 Gatchina
 PNPI


 Protvino
 IHEP


 Puschino
 IMPB RAS



 ITEB RAS



 IPR RAS


 Saratov
 SSU


 St. Petersburg
 FIP



 NIIEFA


 Tomsk
 TSU


Slovakia
 Kosice
 IEP SAS



 TUKE



 PJSU


 Presov
 PU


 Banska Bistrica
 UMB


South Africa
 Cape Town
 UCT


 Pretoria
 UP


 Stellenbosch
 SU


Switzerland
 Zurich
 ETH


Taiwan
 Taipei
 AS


Tajikistan
 Dushanbe
 TNU



 PHTI ASRT


 Khujent
 KSU


USA
 Argonne, IL
 ANL


 Stanford, CA
 SU


Vietnam
 Hanoi
 VNU


