Joint Institute for Nuclear Research

Comparative analysis of parametric X-ray radiation from diamond powders with varying particle sizes

The traditional Debye-Scherrer method for crystallite size determination faces fundamental limitations when analyzing nanosized objects due to peak broadening effects. This research explores parametric X-ray radiation (PXR) as a promising alternative approach, where radiation is...

Investigations of Depth Profile of Native Oxide Layers Covering GaAs Implanted with Noble Gas by Rutherford Backscattering Spectroscopy with Nuclear Reaction

The samples employed in the investigation were semi-insulating GaAs wafers. Noble gas has been implanted using the UNIMAS ion implanter at energy 100 keV, fluence of 3 × 1015 ions/cm2. Rutherford backscattering spectroscopy with nuclear reaction analysis (RBS/NR) method was used...

Simulation of the U400R Cyclotron Vacuum System

Abstract The U400 cyclotron reconstruction project is currently underway at the Flerov Laboratory of Nuclear Reactions at the Joint Institute for Nuclear Research. Modification of the design of the axial injection channel and the vacuum chamber is planned. It is necessary to simu...

Development Methodology of the Data Management System for the BM@N Experiment

Abstract Methodology for developing the data management system (DMS) for BM@N, a fixed target experiment at the NICA (Nuclotron-based Ion Collider fAcility) project is presented. The data management system provides all the necessary tools for secure and efficient data transfer, f...

Study of the Characteristics of the BBC Detector Prototype

Abstract One of the subsystems of the SPD experiment (phase I) is the Beam Counter (BBC), designed as high-granularity scintillation detector with a segmented structure of ~800 channels. To ensure its reliability, a quick tool to check entire optoelectronic path is needed. We pre...

Liberation of Dynamical Quarks at High Temperature

Abstract Confinement of dynamical fields can be attributed to the absence of corresponding asymptotic states. Thermodynamical properties of such system are more appropriately formulated in terms of collective excitations of these fields, if they appear as particles. This mechanis...

Searches for the Tensor Glueball in ψ(3686) Radiative Decays at BESIII

Search for bound states of gluons–glueballs–remains one of the most important challenges of the modern QCD. Notable progress in this task has been achieved in various studies of $$J{\text{/}}\psi $$ decays performed by the BESIII Collaboration. In this paper we present overview o...

Application of Deep Neural Networks in Top-Higgs Coupling Analysis with the ATLAS Detector

Abstract The associated production of a Higgs boson with a single top quark provides direct sensitivity to the relative phase and magnitude of the Higgs–top coupling. Due to the high similarity of the final–state signature with the dominant backgrounds and extremely small number...

SPD Applied Software Repositories Branch Management Model with CI/CD Integration and Automatic Publishing to CVMFS

Abstract This work focuses on developing common repository management rules and a unified GitLab CI/CD workflow for the SPD experiment applied software. During the development, pre-existing version control and management practices were adjusted, a proprietary GitFlow-based branch...

Monitoring of the SPD Data Management System

Abstract Active work continues on the creation of the SPD (Spin Physics Detector) facility at the NICA accelerator complex, which is located at the Joint Institute for Nuclear Research. Since the detector or facility will collect a large amount of data, data processing and storag...

Performance and Upgrade of Trigger Detectors for the BM@N Experiment

Abstract A system of trigger detectors was developed and successfully operated in the BM@N experiment during the 2023 run with 124Xe ion beams at 3.8 A GeV. The trigger detectors are based on plastic scintillators with specialized PMTs and SiPMs operating in the strong magnetic f...

Data Management System for SPD Online Filter

Abstract This article outlines the architecture of the data management system (DMS), which is one of the core components of the SPD online filter’s middleware. The DMS automates the lifecycle management of experimental data during primary processing. The article also examines the...

High-Voltage Power Supplies Line Development for Research Facilities

Abstract The described R&D activity is based on the use of experience in the development and implementation of high-voltage power supplies for KRION-6T ion source which is a main part of NICA heavy ion injector at LHEP, JINR. The current state of development of a line of high-vol...

Sensitivity of Flow Harmonics to the Equation of State of Strongly Interacting Matter in Heavy-Ion Collisions at Nuclotron-NICA Energies

The main goal of beam energy scan programs in heavy-ion collisions is to investigate the equation of state (EoS) and explore possible phase transitions in strongly interacting matter. Anisotropic flow, quantified from the azimuthal distributions of produced particles, is a key ob...

Double-Differential Cross Sections of Neutron Production at Large Angles in 124Xe + CsI Collisions at 3.8 A GeV

Abstract The double-differential cross sections of neutron production in 124Xe + CsI collisions at 3.8 A GeV were measured at large polar angles with a compact time-of-flight spectrometer of the BM@N experiment. Preliminary results for the energy spectra of neutrons show near-iso...

Longitudinal Phase Space Tomography for NICA Booster Multi-Turn Injection

Abstract Longitudinal phase space tomography is widely used in particle accelerators for beam diagnostics. Earlier works consider synchrotron oscillations of the particles within the separatrix; however, for some experiments the distribution of the particles outside the separatri...

Advanced Setup for Performance Studies of Small Straw Tracker Prototypes for the SPD Detector

Abstract A multi-functional setup has been developed for testing first prototypes of the SPD Straw Tracker. The setup was successfully operated during test beams at CERN in 2024 and 2025, combining a wide range of detectors and front-end electronics. It includes a reference timin...

Supramolecular Organization of Copper-Coordinated Segmented Polyurethanes

Abstract The supramolecular organization in segmented polyurethanes modified with various copper-containing metal complexes was studied using the small-angle X-ray scattering method and atomic-force microscopy. It was found that in series of CuCl2—N,N'-diethylhydroxylamine (MCS s...

Integration of Maestro Software Client and Server Components for Hardware Control of the Synchronization System Segment for the Booster Injector at LHEP JINR

Abstract This paper discusses the integration of the client and server components of Maestro software, designed for controlling the equipment of the synchronization system segment of the Booster injector at the Laboratory of High Energy Physics of the Joint Institute for Nuclear...

Comparison of the Neural Stem Cell Heterogeneity Model for Radiation Research

Abstract Differences in the sensitivity of various neural stem cell (NSC) types to radiation may determine the extent of radiation-induced impairments in the hippocampus. Previously, we proposed a model describing the dynamics of heterogeneity of NSCs with varying division rates....