Conveners
Poster session 2
- Giovanni Ottavio Delle Monache (Istituto Nazionale di Fisica Nucleare)
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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)10/09/2024, 18:35poster
The radionuclide 111In is one of the widely used radionuclides in diagnostic nuclear medicine. Research on its production has been carried out since the second half of the last century. For commercial purposes, 111In is produced in proton or alpha particle induced reactions on cadmium or silver targets [1, 2]. However, in recent years, various activation methods have been proposed to obtain...
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Pavel Karataev (Royal Holloway, Unviersity of London)10/09/2024, 18:35poster
In this study, a series of experimental samples were produced using the fused filament fabrication technique. The set comprised dielectric wafers printed from a variety of polymers, including polyethylene terephthalate glycol (PETG), polylactide (PLA), acrylonitrile butadiene styrene (ABS), high impact polystyrene (HIPS), styrene-acrylonitrile (SAN) and PLA with differing concentrations of...
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Dr Hayk Gevorgyan (Alikhanyan National Laboratory (Yerevan Physics Institute))10/09/2024, 18:35poster
The problem of coherent X-ray radiation formed in crystalline undulator (CU) by positron bunch with modulated density is solved. The CU parameters are calculated, the choice of which provides coherent radiation of the positron bunch (with parameters of LCLS) modulated in the SASE FEL process. If modulation depth is not too small, then an X-ray photon beam is formed, more powerful and...
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Roza Karapetyan10/09/2024, 18:35poster
The distribution of quasars is quite a good indicator for studying the structure of the universe. The distribution of quasars around quasar 0851+20 gives grounds for asserting that if the number of quasars is complete and their distribution is homogeneous, then that part of the universe is homogeneous. In the distribution of extragalactic objects around quasar 0851+20, quasars show a more...
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Yury Cherepennikov10/09/2024, 18:35poster
Particle and radiation beams are widely used for cancer therapy. In last decades neutron sources are becoming more and more popular for medical applications. One of the most advanced technique for cancer treatment is neutron-capture therapy (NCT). In this technique, a particular element with high cross-section of neutron initiated nuclear reaction is accumulated in a tumour and irradiated by...
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Liana Bezhanova (Institute of Applied Problems of Physics of the National Academy of Sciences of the Republic of Armenia)10/09/2024, 18:35poster
Nematic single crystals (NLC) find wide application in creating various optical devices, where the functioning is based on effects related to the change in orientation of the optical axis or the disruption of optical homogeneity of the crystal in electric, magnetic, and acoustic fields. The development of fundamentally new indicator devices based on electro-optic effects in LCs simul¬taneously...
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Daria Sergeeva10/09/2024, 18:35
Hollow electron beams are actively studied now in view of their usage for high-intensity beam collimation at the Large Hadron Collider in CERN [1, 2]. Besides, the intensively studied today beams with non-zero orbital angular momentum (OAM) are also hollow. Usually hollow beams with OAM are described by Gaussian-Laguerre or Bessel functions. Yet, as a first step, the ring-shaped constant or...
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Dr Anahit Shamamyan (Military Academy after Vazgen Sargsyan MoD RA)10/09/2024, 18:35poster
A formula for the spectral distribution of intensity of radiation from a system of gap-separated spiral undulators is derived. It is found that the form of spontaneous radiation line is changing, viz., it narrows, if the gap between the undulators increases. As the gain factor of the stimulated radiation depends on the derivative of the form of the line, then, as shown in this work, at least...
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Pavel Karataev (Royal Holloway, Unviersity of London)10/09/2024, 18:35poster
Development of advanced intense and reliable sources of charged particle beams is a direction within accelerator physics on its own right. By changing the temperature of Lithium Tantalate (LiTaO3) single crystal at moderate vacuum conditions leads to generation of strong electric field. The uncompensated polarization during the heating or cooling of the crystal causes the ejection of electrons...
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Dr Hayk Gevorgyan (Alikhanyan National Laboratory (Yerevan Physics Institute))10/09/2024, 18:35poster
Unlike in a vacuum undulator, an undulator containing a dispersive medium forms a line shape of soft photons. The energy of these photons is determined by the oscillation frequency of an ultra-relativistic charged particle and the plasma frequency of the medium, when the energy of the particle greatly exceeds the threshold energy for radiation formation. The line shape of the spontaneous...
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Yury Cherepennikov10/09/2024, 18:35
The applied imaging task gains more and more interests during last few decades in very different scientific fields from medicine to material science. New advanced imaging techniques are continuously developed since the demands for their sensitivity (contrast and spatial resolutions) are constantly rising. It should be noted that the highest sensitivity are usually reached for specific...
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Armine Mnatsakanyan (Institute of applied problems of physics NAS RA)10/09/2024, 18:35poster
A new method of diffraction microradiography of single crystals has been proposed and implemented, based on increasing the resolution of X-ray topographic patterns. A special device has been developed, created, and tested that makes it possible to scan synchronously the slit for transmitting separate parts of the X-ray diffraction pattern and X-ray film with a predetermined speed ratio. The...
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Dr Samvel Mkhitaryan (Institute of applied problems of Physics NAS RA)10/09/2024, 18:35poster
As international experience shows, advances in modern science and technology in designing and introducing earthquake early warning systems (EEWS) in many countries significantly improved the effectiveness and feasibility of short-term early warnings of upcoming earthquake shakes and the use of territorial EEWSs. Despite the universal recognition of the EEWSs’ efficacy in many countries and...
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Aleksandr Savchenko (NRNU MEPhI, Russia, Moscow / Belgorod National Research University, Russia, Belgorod)10/09/2024, 18:35poster
Here we report on the results of computer simulations of a calorimeter system for charged particle detection based on Cherenkov radiators with a profiled end-face. We performed simulations in the Geant4 package [1], which is the leading simulation toolkit in high-energy physics, accelerator physics, medical physics, and space studies. We demonstrate that profiled end-faces of Cherenkov...
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Damir Garaev (National Research Nuclear University MEPhI)10/09/2024, 18:35oral
We present the theory of interaction between a metasurface and an electron with non-zero orbital angular momentum (OAM). The metasurface consists of meta-atoms – subwavelength particles – located at the nods of 2D lattice with periods comparable to the wavelength of radiation. Previously we constructed the theory of SPR from such a metasurface for an electron with zero OAM [1, 2]. We discuss...
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Federico Galdenzi (Istituto Nazionale di Fisica Nucleare)10/09/2024, 18:35poster
The EuPRAXIA EU project is leading advancements in particle accelerator research and photon source development through innovative plasma acceleration techniques. The EuAPS project, led by INFN in collaboration with CNR and the University of Tor Vergata, focuses on utilizing laser wakefield acceleration to create a betatron ra- diation source at the INFN Frascati National Laboratory. This...
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