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Mikhail Nozdrin (JINR)19/09/2023, 17:00Poster
Project of the source of relativistic electrons with angular momentum
Development of the source of relativistic "vortex" electrons (with orbital angular momentum) based on the LINAC-200 electron accelerator complex is started in JINR. First stage of this project is the testbench with the electron energy of 5 MeV for the RF-gun based option and of 400 keV for the DC-gun based one. Testbench...
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Irina Miloichikova (National Research Tomsk Polytechnic University; Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences)19/09/2023, 17:02General Properties of Radiation from Relativistic ParticlesPoster
One of the important parameters characterizing the interaction of electron beams with matter is the deep dose distribution. To develop a new approach for shaping electron beams using specially created materials suitable for the manufacture of complex 3D-printed devices, it is necessary to analyze the features of ionizing radiation propagation.
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In this work, numerical simulations and... -
Vladimir Smolyanskiy (Tomsk Polytechnic University)19/09/2023, 17:03General Properties of Radiation from Relativistic ParticlesPoster
Nowadays, high-energy radiation sources are increasingly used in nondestructive X-ray inspection. The main reason for the growing popularity of gamma radiation sources with electron energies of more than 1 MeV is the possibility of their application in high-energy radiographic control with innovative digital systems. Such systems have the advantages of high penetration, high sensitivity of...
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Dr Levon Levonyan (Yerevan State University)19/09/2023, 17:04Diffraction Radiation, SmithโPurcell EffectPoster
The use of a temperature gradient in the study of the dynamical diffraction of a spherical X-ray wave in the Laue geometry is due to the fact that the atomic reflecting planes in the crystal are fan-shaped, which makes it possible to control the focusing process. It was shown in [1] that in the case of a short period superlattice a smooth change in the gradient value can focus different...
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Vladimir Smolyanskiy (Tomsk Polytechnic University)19/09/2023, 17:05General Properties of Radiation from Relativistic ParticlesPoster
Experimental results of a study of the properties of microfocus bremsstrahlung (Bs) generated in narrow inner silicon (Si) and tantalum (Ta) targets of a betatron with an electron energy of 18 MeV are presented. The targets were Si crystals 50 and 8 ยตm thick and Ta foil 13 ยตm thick oriented with a goniometer along the direction of the inner electron beam. The results showed a strong dependence...
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Mr Mikhail Vladimirov (NRNU MEPhI)19/09/2023, 17:06Poster
Modern radiofrequency (RF) photoinjectors that are widely spread as $e^-$ sources for free-electron lasers, colliders and synchrotron radiation facilities, use semiconductor photocathodes quite often. Such photocathodes, as a rule, consist of a semiconductor layer (units-tens of $\text{nm}$) with a high QE and a metal substrate. The use of such structures is associated with a number of...
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Anush Badalyan (A. I. Alikhanyan national science laboratory (Yerevan Physics Institute)" foundation)19/09/2023, 17:07General Properties of Radiation from Relativistic ParticlesPoster
Improved thermal barrier coatings (TBCs) will enable future gas turbines to operate at higher gas temperatures. Considerable effort is being invested, in identifying new materials with even better performance than the current industry standard, yttrium stabilized zirconia (YSZ). TBCs are also supposed to be applied in spacecrafts as protective layer against heat. The operation of spacecrafts...
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Dr Liana Bezhanova (Institute of Applied Problems of Physics of the National Academy of Sciences of the Republic of Armenia)19/09/2023, 17:08General Properties of Radiation from Relativistic ParticlesPoster
This study explores the application of catastrophe theory to describe the molecular mechanism of smectisation and the regulation of polymorphism in nematic liquid crystal (NLC) systems that are based on polar liquid crystals, whose molecules have a large dipole moment directed along the long axis of the moยฌยฌleยฌcule .We have identified a relationship between the control variables of cusp...
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Mileta Arakelyan (Yerevan State Univercity)19/09/2023, 17:09General Properties of Radiation from Relativistic ParticlesPoster
The purpose of this work is to obtain a dynamic picture of the interaction of two solitons by analyzing the solution of the KdV (Korteweg de Wriz) equation. By changing the variables in the exact solution of the KdV equation, a solution is obtained that can be used to visualize the internal mechanism of the interaction of two solitons. At the corresponding boundary transitions in the...
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Tiruhi Bakhshiyan (Institute of Applied Problems of Physics of the National Academy of Sciences of the Republic of Armenia IAPP NAS RA)19/09/2023, 17:10Radiation Processes and Material SciencePoster
The possibility of the photonuclear production of radioisotope 111In is discussed. The 111In radionuclide is among those that are used most frequently in diagnostics since it is a short lived (T1/2 = 2.8 day) gamma emitter (Eฮณ = 171.3, 245.4 keV). Moreover, this radioisotope is used in Auger therapy.
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Enriched tin targets 112Sn were irradiated at the linear electron accelerator of Alikhanian... -
132. The electron beam propagation through 3D-printed plastic samples with different infill patternsAngelina Bulavskaya (National Research Tomsk Polytechnic University)19/09/2023, 17:11Poster
Three-dimensional printing has a wide range of applications in science and technology. Fused filament fabrication (FFF) is a commonly used 3D printing technology, which is now being increasingly employed in radiation physics. In FFF, the internal structure of an object is primarily determined by its fill pattern and selected print modes. Therefore, this study aims to examine the interaction...
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Dr Sergei Stuchebrov (National Research Tomsk Polytechnic University)19/09/2023, 17:12Poster
This research on the transverse profile of ionizing radiation beams and the development of a multi-angle beam scanning detection system is highly significant and applicable in various fields.
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In technological and research applications, it is crucial to accurately determine the transverse profile of ionizing radiation beams for effective quality control purposes. However, most existing... -
Vitold Bleko (JINR)19/09/2023, 17:13Poster
As part of the commissioning work at the linear electron accelerator LINAC-200 (JINR), we conducted experiments to study the characteristics of a pulsed neutron source obtained by irradiating a converter target with a 140 MeV electron beam. We performed numerical simulations to estimate the parameters of the neutron source and the energy spectra of neutrons in lead and tungsten targets of...
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Suren G. Arutunian (Alikhanyan National Science Laboratory, Yerevan, Armenia; CANDLE Institute for Synchrotron Research, Yerevan, Armenia)19/09/2023, 17:14Poster
In the process of irradiation of materials by fluxes of heavy particles (protons, neutrons, alpha particles) damage of material structure is observed. As a result of accumulation of such damages, there is a subsequent change in the properties of materials, in particular, its embrittlement and hardening. In this work, to observe the effect of heavy irradiation particles on the mechanical...
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Ms Julietta Vardanyan (Institute of Applied Problems of Physics NAS RA)19/09/2023, 17:15Poster
Abstract: Many properties of corundum, including the radiation and thermal resistance, large forbidden zone, high light output, and spectral and temporal characteristics, make it an attractive converter for UV and particle detectors.
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We have at our disposal many corundum crystals of different thicknesses with various activators, which were studied in the UV range of the spectrum.... -
Gohar Hovhannisyan (Yerevan State University)19/09/2023, 17:16Radiation Processes and Material SciencePoster
Cross sections of proton-induced reactions on tin up to energies of 18 MeV using the stacked-foil activation technique have been measured. Experimental values for 114Sn(p,ฮฑ)111In, 114Sn(p,pn)113Sn, 114Sn(p,2n)113Sb, 120Sn(p,n)120m,gSb, 120Sn(p,ฮฑ)117m,gIn reactions cross-sections are reported.
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A stack of enriched 114Sn and 120Sn foils was irradiated using 18 MeV proton beam provided by... -
Yeghisabet Hayrapetyan (National University of Architecture and Construction of Armenian, Yerevan, Republic of Armenia)19/09/2023, 17:17Radiation Processes and Material SciencePoster
Abstract: The article deals with the construction of a single-channel light rangefinder. At the same time, one of the main difficulties is the presence of depolarization of light, which forms residual light at the output of the analyzer, which greatly affects the measurement accuracy. It is shown that in order to exclude residual light by compensating for depolarization, a KDP crystal plate...
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Yeghisabet Hayrapetyan (Institut of Applied Problems of Physics NAS RA)19/09/2023, 17:18Radiation Processes and Material SciencePoster
To operate a high-precision light rangefinder in a wide temperature range (-10 +40) ยฐ C, as well as to resolve the ambiguity of the measurement, it is necessary to ensure a change in the resonant frequency within 10-15% of the fundamental frequency. At a fixed modulation frequency of 1200 MHz, a device for smoothly changing the modem frequency within 150-180 MHz should be install on the modem...
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Ms Irina Kilmetova (NRC Kurchatov Institute)19/09/2023, 17:19Poster
Linear rare earth permanent magnet (REPM) structures of split-pole type with harmonic distribution of magnetization for generators of synchrotron radiation are considered. The main attention is paid to issues of high order harmonic amplitude decrease at longitudinal Fourier-expansion of the field along the electron beam axis. Itโs presented by a comparison that relative oberton amplitudes...
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Dr Artem Vukolov (TPU)19/09/2023, 17:20Poster
Accelerators of charged particles are powerful experimental tools, which are used in many fundamental researches and applied tasks. Compact accelerators are currently widely used for pretesting and proof-of-principle experiments for MegaScience projects, as well as for applied purposes. In this work, we present the detailed technical report of Microtron Experimental Facility at Tomsk...
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Dr Yury Cherepennikov19/09/2023, 17:21Poster
Cherenkov radiation is widely used effect, which finds a broad application in the charged particle beam diagnostics. Corundum crystals are prospective radiators for obtaining Cherenkov light. Corundum radiators may significantly change their optical properties during extensive exploitation with particle beams that would influence Cherenkov light intensity. In this report, we experimentally...
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Prof. Asatur Lalayan (Yerevan State University)19/09/2023, 17:22Oral
The Fraunhofer diffraction of an electromagnetic wave by a slit on an opaque screen located between vacuum and an anisotropic material medium is considered. Two cases of anisotropic media are considered and compared: with a closed wave vector surface (CWVS) and with an open wave vector surface (OWVS).
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Formulas that describe diffraction in these two types of anisotropic media are obtained.... -
Dr Ruzan Sukiasyan (Institute of Applied Problems of Physics, NAS of Armenia)19/09/2023, 17:23Xโray Based Optics and DiffractometryPoster
In recent years studies have shown that doping a crystal with amino acids improves the non-linear optical properties of ฮฑ-LiIO3crystal [1, 2]. The authors[3] have studied the interaction of lithium with iodic acid and have shown that, at compositions close to 0.2โคxโคO.34, 2LiIO3โขHIO3crystals are formed in a mixture of Li1-xHxIO3.
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The present work deals with the synthesis, IR spectrum, thermal,... -
Ruben Chilingaryan (Institute of Applied Problems of Physics (IAPP) NAS RA)19/09/2023, 17:24Radiation Processes and Material SciencePoster
The results of a study of deposition by a new type of magnetron developed by us - an acoustoplasmic low-frequency magnetron, are presented. The deposition of conductive and non-conductive materials is considered, and also polycrystalline and porous structures.
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Yakov Abakumov (National Research Centre "Kurchatov Institute")19/09/2023, 17:25Poster
Short-period, high-field undulators are widely used on modern SR sources to generate high-intensity coherent radiation. In order to achieve the stability of the properties and the quality of the radiation received in undulators magnetic field of ID has to meet very tough tolerances, which depend on the accuracy of the arrangement of magnets in the assembly. Such tolerances can be achieved by...
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Aleksei Komlev (NIC Kurchatov institute)19/09/2023, 17:26Poster
Synchrotron sources play an essential role in contemporary scientific investigations in physics, chemistry, biology, materials science, and other fields. They offer high intensity, a wide energy spectrum, and distinct synchrotron radiation characteristics, making them unmatched for a variety of experimental objectives. Recent years have witnessed substantial endeavors in advancing...
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Igor Vnukov19/09/2023, 17:27Oral
Recently, a number of works have appeared devoted to estimating the size, divergence, and emittance of beams of relativistic electrons (positrons) by recording the angular distributions of diffracted transition radiation (DTR) of particles in thin crystals [1, 2]. Diffracted transition radiation can be represented as a result of reflection of transition radiation (TR) with a characteristic...
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Blazo Djurnic19/09/2023, 17:28
Optical transition radiation (OTR) is widely used for relativistic beam diagnostics. Recently such a technique was applied for transverse profile measurements at the GSI non-relativistic ion beam [1]. Authors of the paper [2] proposed a new method for measuring the ion energy based on the monochromatic optical Cherenkov radiation (ChR) from radiators with frequency dispersion.
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This report... -
Pavel Shapovalov (National Research Nuclear University "MEPhI")19/09/2023, 17:29Poster
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Abdulkarim AmirovRadiation Processes and Material SciencePoster
Hall magnetometry is one of the basic measurement methods for research and diagnostics of undulator systems for generating coherent synchrotron radiation. Present work is devoted to the development of 3D measurement device based on Hall sensors for the studies of magnetic characteristics of undulator systems constructed of permanent magnets. The main purposes of the developed 3D magnetic...
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Dr Armen Sedrakyan (National Polytechnic University of Armenia (NPUA))Poster
The study of light scattering in school textbooks did not consider the heterogeneity of the crystal, and Maliusโs law was written for the ideal crystal. In this paper, I consider it expedient to discuss the mentioned issues in some detail. Given the heterogeneity of the crystal, the general or probabilistic form of Maliusโs law is proposed.
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Consider the inhomogeneity or ellipticity of the... -
Astghik Danghyan (Institute of Applied Problems of Physics of the NAS RA)
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Syuzi GrigoryanGeneral Properties of Radiation from Relativistic ParticlesPoster
The effect of p-nitroaniline on a model of biological membranes consisting of the sodium salt of di-(2-ethylhexyl) sulfosuccinic acid-n-heptane and water was studied by X-ray analysis.
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Structural changes, phase transformations, changes in the degree of compactness of the liquid crystal structure, thereby changing the conditions of transport phenomena through model membranes, have... -
Artur Aramyan (IAPP NAS, RA)Poster
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Samvel Mkhitatyan (Institute of applied problems of physics NAS RA)
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Oleg Bogdanov (Tomsk Polytechnic University)Poster
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Dr Armen SedrakyanControl of Parameters of Plasma by Acoustic SuperlatticesPoster
In a huge number of works on the synthesis of high-temperature superconductors (HTSCs), two main directions are distinguished: works on the synthesis of new superconductors ([1] -as well as references therein), and works on the development of new methods for improving the physical parameters of traditional HTSC materials [2โ4].
In this paper, we consider three methods for the synthesis of...
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Vyacheslav DyubkovPoster
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Kristine Sahakyan (IAPP NAS, RA)Poster
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Dr Aleqsan Abrahamyan (Institute of Applied Problems of Physics (IAPP) NAS RA), Ruben Chilingaryan (Institute of Applied Problems of Physics (IAPP) NAS RA)Control of Parameters of Plasma by Acoustic SuperlatticesPoster
The possibility of acceleration of charged particles in a low-pressure acoustoplasma at low values of the voltage applied to the plasma has been shown theoretically and experimentally. In experiments in neon acoustoplasma, the average gradient of the external voltage applied to the anode-cathode gap was < 5 V/cm.
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Syuzi GrigoryanInteraction of Particles Beams with Artificial StructuresPoster
Structural rearrangements of di-(2-ethylhexyl)sulfosuccinic acid (AOT) - n-heptane-water liquid-crystal system simulating biological membranes, under the influence of different concentrations of Dimethyl sulfoxide (DMSO).
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It has been established that the influence of Dimethyl sulfoxide (DMSO), by changing the degree of hydration of the polar core, changes the characteristic parameters of the...
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