Abstract Radiobiological experiments with the irradiation of various biological samples by nuclei from boron to neon with a primary energy of 30–50 MeV/nucleon are performed on the U400M cyclotron of the Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research. The linear energy transfer (LET) of the nuclei in samples is calculated using the code Lise++. For reducing the energy of nuclei

Abstract For the Precision Laser Inclinometer (PLI) temperature resistivity increase the essential design innovations have been developed and introduced in the PLI accepted design scheme. The proposed methods of the temperature resistivity guarantee—as shown experimentally—the achievement of a long term PLI sensitivity of 2.8 × 10–11 rad for allowed ±0.1°С variation of temperature of surrounding environment

Abstract— We have studied proton radioactivity of heavy nuclei of atomic number range 72 < Z < 88. We have calculated the energy released during the proton decay (QP) and half-lives of proton decay. To study the competition between different decay modes, we have compared the proton decay half lives with that of the decay modes such as alpha decay, beta decay, cluster decay and spontaneous fission.

Abstract The conceptual new design of the Precision Laser Inclinometer (PLI) is proposed and developed what resulted in creation of compact instrument for its possible use in a restricted vacuum volume of sensitive elements of Gravitational Wave Interferometric Antennas. It is shown that the use of a position sensitive method—the dividing plates method—for the detection of angular inclination of laser

Abstract At the VEPP-4 accelerator complex experiments on high energy physics, nuclear physics, synchrotron radiation and hard X-ray are carried out. The paper presents the current status of the complex and its experimental programs. The development of the resonance depolarization method for the absolute beam energy measurement using a laser polarimeter is discussed. The results of observing the azimuthal

Abstract Lead converter was irradiated with electron beams with energies of 60, 80 and 100 MeV. And holmium samples were irradiated with a flux of bremsstrahlung, which was formed in a lead converter. The rates of about 20 photonuclear reactions in 165Ho, which are induced by bremsstrahlung, were measured. Simulations to determine the fluence of electrons, photons, neutrons for holmium samples and

Abstract In this paper, we report on the study of the optical properties of YAG:Ce and GGG:Ce garnet crystals after irradiation in a 660 MeV proton beam with a fluence up to 8.9 × 1014 protons/cm2. We found that the transparency of both crystals fell by no more than 7% in the region of their own luminescence. The light yield of the YAG:Ce sample, measured one year after the irradiation, dropped by

Abstract Additional proton beams with variable energy are simulated by the Monte Carlo method for testing the radiation resistance of electronics and other applications on the SC-1000 synchrocyclotron at the Konstantinov Institute of Nuclear Physics (PNPI). It is established that the spectrum of beams with a variable energy of ~62, 100, 200, 300, 400, 500, 600, 700, 800, 900, and 1000 MeV achieved

Abstract Thunderclouds act as the sources of energetic radiation, the main components of which are gamma particles and electrons. The radiation can be registered by satellite or ground-based detectors. The effect is caused by the bremsstrahlung of electrons accelerated by the cloud electric field. The study of high-energy atmospheric phenomena requires analyzing the data on the distribution of cloud

Abstract This publication is devoted to the analysis of ceramic items found in Bolgar, the capital of Volga Bulgaria (now it is the territory of Tatarstan, Russia). Neutron activation analysis (NAA) and X-ray fluorescence (XRF) analysis of the ceramic paste of glazed medieval stonepaste ceramics (fritware) was carried out by the NAA group at the IREN facility of the Frank Laboratory of Neutron Physics

Abstract Surface waves propagating in the semi-bounded collisional hot QCD medium (quark-gluon plasma) are considered. To investigate the effect of collisions as damping and non-ideality factor, the longitudinal and transverse dielectric functions of the quark-gluon plasma are used within the Bhatnagar–Gross–Krook (BGK) approach. The results were obtained both analytically and numerically in the long

Abstract The vertex silicon detector is part of the NICA-MPD tracking system designed for efficient registration of short-lived products of nucleus–nucleus interactions. This paper presents the results of a computer simulation of the identification capability of the MPD tracking system which includes a Time-Projection Chamber (TPC) and a vertex detector based on Monolithic Active Pixel Sensors (MAPS’s)

Abstract This work relates to the study and characterization of the CTDI (Computed Tomography Dose Index) for the 16 slices CT scanner. The CTDI has been simulated with the Monte Carlo code GATE for PMMA (polymethylmethacrylate) digital phantoms of various diameters (1–50 cm) at various kVp (80, 110, 130) and mAs (100, 200, 300, 400 mAs) levels. After using a High-Performance Computing (HPC) station

Abstract The description of the muon capture system units with different targets (gas and solid-state) is presented. Using the muon-event selection system and high-purity germanium (HPGe) detectors, precise measurements of the time-energy distributions following ordinary muon capture in the isotopically-enriched 130Xe, 82Kr, and 24Mg nuclei were performed. The optimal parameters of the muon capture

Abstract This paper investigates an analytical illustration of ignition conditions for the aneutronic reaction of proton-boron plasma in the presence of the magnetic field for fusion. In particular, the criterion for this plasma target is derived through two-temperature Lindl–Widner diagrams. Since the heating and cooling terms in the energy balance equation are affected by inequality between ions

Abstract For ordinary (bipolar) radiation, the integral of the electric-field strength in time is zero. The possibility of generating unipolar radiation was theoretically considered in (E.G. Bessonov. Preprint no. 76, Lebedev Physical Institute, Academy of Sciences of the Soviet Union, Moscow, 1990) for the first time. In this work, unipolar radiation is defined as radiation for which the integral

Abstract In this paper we conduct a phenomenological study for the search of evidence for the intrinsic charm mechanism in double \({J \mathord{\left/ {\vphantom {J \psi }} \right. \kern-0em} \psi }\) production at the COMPASS experiment using the CERN \({{\pi }^{ - }}\) beam at 190 GeV/c. Estimations on \({J \mathord{\left/ {\vphantom {J \psi }} \right. \kern-0em} \psi }\) pair cross-sections and

Abstract Today the task of ensuring the radiation resistance of ICs for space exploration is very important. To solve this problem, a detailed examination of radiation effects on electronics is required. In this paper, the DPS-NICA project, aimed at solving these problems, is presented, as are preliminary simulation results that confirm the operability of the fundamental methods of this project.

Abstract In this talk we review the minimal embedding in \(\mathcal{N} = 2\), \(D = 5\) supergravity of a five–dimensional dilaton–gravity theory that serves as a toy model for the holographic dual of six–dimensional little string theory. Interestingly, the toy model also arises in the continuum version of the clockwork mechanism that was recently proposed as a means of addressing the hierarchy problem

Abstract Although one has trusted that the tree-level string two-point amplitudes vanish due to the infinite volume of residual gauge symmetry, recently the non-zero string two-point amplitudes have been pointed out in the path integral formalism. We consider them in the operator formalism. We have succeeded in obtaining the non-zero two-point amplitude in an open bosonic string theory by introducing

Abstract We present the calculation of the solution of recurrence relations for radial pullback of cubic interaction in AdSd + 1 by using Wolfram Mathematica as an effective tool for computing large expressions. Investigation of the results of these calculations allows us to guess the ansatz for solution and then obtain it completely.

Abstract We discuss how the massive higher spin bosonic and fermionic fields in four-dimensional \(AdS\) space can be described in the frame-like gauge invariant multispinor formalism. We consider both the Lagrangian formulation as well as the unfolded equations.

Abstract We show that the fluctuations of the periodic orbits of deterministically chaotic systems can be captured by supersymmetry, in the sense that they are repackaged in the contribution of the absolute value of the determinant of the noise fields, defined by the equations of motion.

Abstract Higher-point functions of gauge invariant composite operators in \(\mathcal{N} = 4\) super Yang–Mills theory can be computed via triangulation. The elementary tile in this process is the hexagon introduced for the evaluation of structure constants. A gluing procedure welding the tiles back together is needed to return to the original object. We re-analyse previous work on five-point functions

Abstract We consider the role of a 3-form gauge field and a dynamical supermembrane coupled to the former in the Veneziano–Yankielowicz effective field theory describing the gaugino condensate of \(\mathcal{N} = 1\), \(D = 4\) SYM. In particular, we show how these objects provide a self-consistent description of BPS domain walls interpolating between two different SYM vacua and get their explicit shape

Abstract We shortly describe classical models of spinning electron and list a number of theoretical issues where these models turn out to be useful. Then we discuss the possibility to extend the range of applicability of these models by introducing an interaction,that forces the spin to align up or down relative to its precession axis.

Abstract We review the theory for a multiplet of interacting partially massless spin-2 fields around (anti-) de Sitter (A)dS\(_{D}\) background and give new results concerning the couplings between a massless spin-1 vector field and a partially massless spin-2 field.

Abstract Spin Ruijsenaars–Schneider model introduced by Krichever and Zabrodin is a generalisation of a finite-dimensional integrable system due to Ruijsenaars and Schneider, where particles carry additional internal degrees of freedom. We review how a Hamiltonian structure of the spin model with the hyperbolic potential can be obtained by means of Poisson reduction applied to a specially chosen Poisson

Abstract First of all we give a simple example of Kähler manifolds (pseudo)Euclidean complex spaces as well as compact and non-compact complex projective spaces. Moreover we describe The Klein model of Lobachevsky space and mapping a conformal mechanics to itin one dimensional case first. Than we extend Klein model for the N-dimensional. We got interesting results that isometry generators of the phase

Abstract We consider the explicit spinor \(R\) matrices of low rank orthogonal algebras and the corresponding \(RTT\) algebras using the new approach to calculation of spinorial \(R\) matrix. We also discuss the Algebraic Bethe Ansatz for spinor and vector monodromy matrices.

Abstract We discuss the Einstein tensor, the supercurrent and their conservation laws of old and new minimal formulations of supergravity in the superconformal approach. The variation of the action with respect to the gauge field of the \(R\)-symmetry in the conformal approach (the auxiliary field in the super-Poincaré action) allows to find the Einstein tensor and supercurrent in any curved background

Abstract We review some fundamental aspects of mixed symmetry tensor gauge theories using a formulation based on graded geometry. In particular, we are able to construct kinetic, mass and Galileon-type higher derivative interaction terms for such fields. The resulting elegant geometric formulas allow for shared features of these theories to be highlighted and for possible interaction terms to be classified

Abstract This paper is a review of the recently published article by Martin O’Loughlin and Hovhannes Demirchian [1] on covariant description of gravitational memory effect. There, a new approach was introduced to study geodesic congruences and their evolution after traversing impulsive signals, containing a mixture of material sources and gravitational waves. It was shown that the effect of the wave

Abstract We study the highest weight representations of the RTT-algebras for the R-matrix of \(\mathop {{\text{sp}}}\nolimits_q (4)\) type by the nested algebraic Bethe ansatz. It is a generalization of our study for R-matrix of \({\text{sp}}(4)\).

Abstract Motivated by the universal knot polynomials in the gauge Chern–Simons theory, we show that the values of the second Casimir operator on an arbitrary power of Cartan product of \({{X}_{2}}\) and the adjoint representations of simple Lie algebras can be represented in a universal form. We show that it complies with the Perelomov–Popov formula for the generating function for the Casimir spectra

Abstract We report on the results of our work [1], which discusses \(\mathcal{N} = 2\) nonlinear sigma models on the quadrics of the Grassmann manifold and three-pronged junctions of the mass-deformed nonlinear sigma models on \(SO(8){\text{/}}U(4)\) and \(Sp(3){\text{/}}U(3)\). This article is prepared for the Proceedings of International Workshop “Supersymmetries and Quantum Symmetries—SQS’2019”

Abstract The assumption that elementary particle can be a black hole (BH) opens up several new aspects in the problems of particle physics and its interaction with gravity. We consider here regularized version of the particle created by Kerr–Newman BH solution, and analyse two new related gravitational effects: (1) emergence and role of the non-trivial topology and (2) new effect of a self-interaction

We consider formulae for universal (in Vogel’s sense) quantum dimensions and their applications. Universal quantum dimensions of Cartan powers of \({{X}_{2}}\) and adjoint representations at the points of special type singularities are shown to give correct answers when restricted to both exceptional and one other appropriate lines. Derivation of Diophantine equations, classifying simple Lie algebras

For a couple of associative algebras we define the notion of their double and give a set of examples. Also, we discuss applications of such doubles to representation theory of certain quantum algebras and to a new type of Noncommutative Geometry.

The present contribution is the written counterpart of a talk given in Yerevan at the SQS’2019 International Workshop “Supersymmetries and Quantum Symmetries” (SQS’2019, 26 August–August 31, 2019). After a short presentation of various pictographs (O-blades, metric honeycombs) that one can use in order to calculate \({\text{SU}}(n)\) multiplicities (Littlewood–Richardson coefficients, Kostka numbers)

The construction of Chern–Simons gravities (CSG) and gravitational Chern–Simons densities (GCS) are considered. Since both these are definied \(via\) the non-Abelian (nA) Chern–Simons densities (CS) in the appropriate representations, and the latter are defined only in odd dimensions, so are the CSG and the GCS. To overcome this restriction, it is proposed that instead of employing nA CS densities

The symmetries of the generalized Calogero model and its discrete version are related to the well-known unitary symmetries of the isotropic oscillator. The correspondence is provided by the Dunkl-operator deformation of the standard quantum momentum.

The traditional particle interpretation of states of quantum field theory in Minkowski spacetime relies on the Minkowski spacetime symmetry, i.e., the Poincare group uplifted to the Hilbert space. We argue that Weinberg’s approach to particles and interactions in Minkowski spacetime utilizes the representations of the inhomogeneous Lorentz transformations in the Hilbert space dissociated from the spacetime

The graph complex acts on the spaces of Poisson bi-vectors \(\mathcal{P}\) by infinitesimal symmetries. We prove that whenever a Poisson structure is homogeneous, i.e. \(\mathcal{P} = {{{\text{L}}}_{{\vec {V}}}}(\mathcal{P})\) w.r.t. the Lie derivative along some vector field \(\vec {V}\), but not quadratic (the coefficients of \(\mathcal{P}\) are not degree-two homogeneous polynomials), and whenever

We review analytic SU(2) Yang–Mills solutions with finite action on four-dimensional de Sitter space from a new perspective, by conformally mapping dS \(_{4}\) to a finite Lorentzian cylinder \((0,\pi ) \times {{S}^{3}}\). As a byproduct, all abelian (i.e. Maxwell) solutions are classified by SO(4) representations. Conformal equivalence of (two copies of half of) this cylinder to Minkowski space yields

In this talk we present the result of [1] where we slightly modified prescription of the radial pullback formalism proposed previously by R. Manvelyan, R. Mkrtchyan and W. Rühl in 2012 [2]. We succeeded to solve all necessary recurrence relations to finalize full radial pullback of the main term of cubic self-interaction for higher spin gauge fields in Fronsdal’s formulation from flat to one dimension

The exotic \(\mathcal{N} = (3,1)\) and \(\mathcal{N} = (4,0)\) supergravity theories in six dimensions are theories describing potentials with mixed-symmetry indices satisfying a second order self-duality relation, and giving rise to maximal supergravity in five dimensions upon dimensional reduction. After reviewing how the linearised equations are constructed, we show how introducing additional gauge

The U(1) vector multiplet theory with the Fayet–Iliopoulos (FI) term is one of the oldest and simplest models for spontaneously broken rigid supersymmetry. Lifting the FI term to supergravity requires gauged \(R\)-symmetry, as was first demonstrated in 1977 by Freedman within \(\mathcal{N} = 1\) supergravity. There exists an alternative to the standard FI mechanism, which is reviewed in this conference

Abstract We discus the gauge dependence of one-loop divergences in the six-dimensional \(\mathcal{N} = (1,1)\) supersymmetric Yang–Mills (SYM) theory.

Abstract The performance of the BINP accelerator mass spectrometer in radiocarbon dating user samples is reviewed. The operation regime of the spectrometer and the experimental procedure are described. The results of the analyses are summarized.

The exact calculation of the delivered dose in the process of irradiating tumors with proton and carbon ion beams is one of the most important components of the process of planning radiation therapy. Today there are two advanced microdosimetric models for calculation the relative biological efficacy of radiation, that are used in clinical practice. This is Microdosimetric Kinetic Model (MKM) and Local

AbstractThe in-depth understanding of beam collective effects in the damping ring (DR) of the VEPP-5 injection complex at BINP is essential for optimizing its operation. Towards this, beam longitudinal profiles at the stage of injection into the DR and for a high-current stored beam have been measured using a streak camera and a dissector. The process of linac-beam capture into the DR has been simulated

AbstractVEPP-2000 is the only electron–positron collider with round beams. This factor enables one to increase the beam–beam effect limit. During the 2018–2019 season, the experimental program was focused on the energy range of 550–990 MeV per beam. Data accumulation was performed using CMD-3 and SND detectors. The measured luminosity integral proved to have a record value of 68 pb–1 per detector.

AbstractIn order to achieve the design luminosity in the NICA collider, it is planned to equip it with both stochastic and electron cooling. The electron-cooling system (ECS) for 2.5 MeV consists of two coolers which cool both ion beams simultaneously. The Budker Institute of Nuclear Physics (BINP SB RAS) already built and commissioned an electron cooling system for the NICA booster, and now the high-voltage

AbstractElectron-beam energy recuperation is usually used in electron-cooling systems (ECSs). The operation stability, vacuum conditions, and radiation background (which is especially important in high-voltage coolers) depend on recuperation efficiency. The only way to improve recuperation efficiency in high-voltage coolers is to increase the electron-collector efficiency. This paper describes the

AbstractA new accelerator complex with new beam lines for applied research is being constructed at the Joint Institute for Nuclear Research (Dubna, Russia) as part of the Nuclotron-based Ion Collider fAcility (NICA) project. The new beam channels are the link between the NICA accelerators and the new stations for applied studies in the applied research program. The channels provide beam transport and

Abstract—The HV electron cooling system designed at the Budker Institute of Nuclear Physics for the NICA collider is the world’s only setup developed for a collider and makes it possible to simultaneously cool two ion beams with an energy up to 4.5 GeV/u using the magnetized electron flow [1]. Due to the fact that the cooling system should be installed at the NICA collider, the distance between the

AbstractThe optimization of the optical structure of the NICA Collider is presented. The Collider optics settings are given for a working point of 9.44/9.44 and a bare gold nuclei beam with energies of 1, 3, and 4.5 GeV/u. The dynamic aperture simulation and optimization results are given. The tolerance of the magnetic field errors for the Collider structural elements and the closed orbit adjustment

Abstact—The results of a statistical and harmonic analysis of the magnetic measurement data of structural elements (dipole magnets) of the Nuclotron Booster at an injection and extraction current are presented.

AbstractCollective effects in the NICA collider are considered taking into account the results of calculations of induced electromagnetic fields (wakes) and coupling impedances of vacuum-chamber elements [1]. Coulomb shifts of longitudinal and transverse oscillations are considered and the stability of coherent oscillations in the presence of these shifts is analyzed; their influence is significant