BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:4 MeV ENERGY PROTONS FOCUSING BY DIELECTRIC CAPILLARY IN THE AIR DTSTART;VALUE=DATE-TIME:20220715T130000Z DTEND;VALUE=DATE-TIME:20220715T132000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-296@events.sinp.msu.ru DESCRIPTION:Speakers: K. E. Kantserova (Sarov Physics and Technology Insti tute of the National Research Nuclear University MEPhI)\, I. A. Karpov (Ru ssian Federal Nuclear Center – All-Russian Research Institute of Experim ental Physics)\nA classical method of the charge particle microbeams forma tion is based on magnetic or electrostatic ion focusing with preliminary i nput beam collimation. An alternative method of the microbeams formation i s using of the capillary. New systems of transformation\, control and tran sfer of the charged particle beams can be developed on a basis of this eff ect\, particularly for obtaining the micron and submicron-sized beams whic h are interested for elemental and structure analysis\, nanolithography\, medical and biological applications\, radiation technologies [1-3]. This m ethod is the easiest and cheapest one for using in comparing with the exis ting micron radiation methods.\nExperimental studies of transfer and focus ing processes of the 4 MeV initial energy proton beam are carried out. For proton beam transportation into the air the SterilleFemtotips 11 dielectr ic capillary with 58 mm length (din = 1\,5 mm\, dout = 92 ± 3 mu-m\; din = 1\,5 mm\, dout = 0\,5 ± 0\,2 mu-m) are used. EGP-10 accelerator [4] is used as a proton source.\nThe optimal distances from capillary to research object are determined as well as time when the least divergence of the be am is observed. Proton energetic spectra are obtained after passing of the protons through the capillary with and without the conductive layer. The method of the beam size determination using the semiconductor detector is proposed. Proton beam sizes at the beam ejection into the air are determin ed.\nRecommendations of formation of proton micron and submicron-sized bea m at EGP-10 accelerator are made basing on obtained experimental data. \n\ n1. А.S. Kamyshan et al\, Vestnik BGU (2007).\n2. G.U.L.Nagy et al.\, Nuc lear Inst. and Methods in Physics Research B. (2018).\n3. S. Wongke et al. \, Surface & Coatings Technology 399 (2020).\n4. S.N. Abramovich\, VANT Se r. Fiz.Yad.Reak. TIYaS-XI. 4. (1997).\n\nhttps://events.sinp.msu.ru/event/ 8/contributions/296/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/296/ END:VEVENT BEGIN:VEVENT SUMMARY:THE OPERATIONAL METHOD FOR CALCULATING THE BIOLOGICAL PROTECTION O F LOW-ENERGY HEAVY ION ACCELERATORS DTSTART;VALUE=DATE-TIME:20220715T124000Z DTEND;VALUE=DATE-TIME:20220715T130000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-457@events.sinp.msu.ru DESCRIPTION:Speakers: Raushan Kabytayeva ()\nSimple analytical formulas fo r operational evaluation of the yield and angular distribution of neutrons \, which are necessary for calculating the biological protection of heavy ion accelerators with energies from 1 to 6 MeV/nucleon\, are presented. Ac tivities on creation of the new multipurpose isochronous cyclotron DC-140 [1] at the FLNR\, JINR became the reason for the development of a method f or operational preliminary calculation. The results of the calculation wer e compared with the results of calculations using the LIZE++ [2] and FLUKA [3] programs and with the available experimental data in the literature.\n As a result of the comparisons\, it can be argued that the proposed method for calculating the yield and angular distribution of neutrons from thick targets can be used to quickly assess the necessary biological protection of heavy ion accelerators under construction and reconstruction with ener gies from 1 to 6 MeV/nucleon. The deviation of the results of these calcul ations from the more accurate ones does not exceed a factor of two\, which is comparable with the results of deviations in the calculation of biolog ical shielding associated with a certain variety of spectra of produced ne utrons and deviations in the protective properties of the materials used o r their thickness.\n\nhttps://events.sinp.msu.ru/event/8/contributions/457 / LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/457/ END:VEVENT BEGIN:VEVENT SUMMARY:NMR-BASED INJECTION FIELD MEASUREMENT SYSTEM FOR MEDICAL PROTON SY NCHROTRON DTSTART;VALUE=DATE-TIME:20220715T120000Z DTEND;VALUE=DATE-TIME:20220715T122000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-268@events.sinp.msu.ru DESCRIPTION:Speakers: Mikhail Belikhin (Lomonosov Moscow State University) \nOne of the main processes in a proton synchrotron is capture of particle s during injection. For successful capture\, it is necessary to measure th e magnetic field in the orbit with high accuracy. Widely used Hall sensors have many disadvantages: not very high precision and long-term stability\ , low radiation resistance\, angular dependence and etc. All these cause d ifficulties in setting of the synchrotron and reduce the stability of its operation\, which is especially important for medical accelerators. Theref ore\, the development of new methods for control of the injection field\, will improve the stability of medical synchrotrons and reduce the treatmen t time [1].\nThe purpose of this work is to develop a high-precision NMR-b ased system for measuring and controlling the injection magnetic field for the medical proton synchrotron [2].\nThe developed system is based on a p ulsed proton NMR-gaussmeter. The magnetic field measurement is made by mea suring the frequency of spin echoes after 180-degree pulses in Carr-Purcel l-Meiboom-Gill sequence. The measuring probe is installed in the vacuum ch amber of the synchrotron in close proximity to the injection channel. The NMR-gaussmeter is built on a modern electronic element base. Control\, fre quency measurement and data transfer are realized by high-speed ARM-microc ontroller. The NMR-gaussmeter is configured and controlled using PC-softwa re designed in Lab Windows CVI.\nThe measuring probe provides an NMR-signa l from the quasi-constant synchrotron’s magnetic field of about ≈1000 Gs (corresponding to proton injection energy of ≈1 MeV) with the possibi lity of digital tuning of the resonant frequency in the range of ±50 Gs. The magnetic field is measured with an accuracy of no worse than 0.1 Gs. T he measurement time is 20 ms. The signal-to-noise radio is at least 5.\nTh e developed system makes it possible to measure the injection magnetic fie ld in real time directly in the acceleration cycle and to ensure the stabl e capture of particles.\n\n1. Chernyaev A.P.\, Klenov G.I.\, Bushmanov A.Y .\, Pryanichnikov A.A.\, Belikhin M.A.\, Lykova E.N. Proton Accelerators f or Radiation Therapy // Medical Radiology and radiation safety . 2019. no. 2. pp. 11-22.\n2. A.A. Pryanichnikov\, V.V. Sokunov\, A.E. Shemyakov\, So me Results of the Clinical Use of the Proton Therapy Complex «Prometheus »\, Physics of Particles and Nuclei Letters\, 2018\, Vol. 15 no. 7.\, P.9 81-985.\n\nhttps://events.sinp.msu.ru/event/8/contributions/268/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/268/ END:VEVENT BEGIN:VEVENT SUMMARY:Biological protection calculation of the elextron accelerator MT-2 5 FLNR JINR by using FLUKA software package DTSTART;VALUE=DATE-TIME:20220715T103000Z DTEND;VALUE=DATE-TIME:20220715T105000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-616@events.sinp.msu.ru DESCRIPTION:Speakers: Yeldos Bolatkazyyev (JINR)\nPhysical experiments to study collinear cluster tri-partition are planned on the cyclic electron a ccelerator MT-25. This is a new type of multibody decay that requires\, du e to the small cross-section of the reaction\, work at the maximum intensi ty of the electron beam for research.\nThe purpose of this work is to stud y the radiation fields that occur at the maximum intensity of the electron beam outside the biological protection of the microtron at an energy of 2 5 MeV.\nIn the course of the work\, measurements of the dose rate of neutr on and bremsstrahlung radiation were carried out. Beyond the biological pr otection of electron accelerators\, they are the main components of radiat ion hazard. For measurements\, a mobile measuring stand was used\, the mai n elements of which are neutron and gamma radiation dosimeters UDBN-01 and UDBG-01.\nAccording to the results of measurements at elevated beam curre nts\, significant excess of the dose rate of braking radiation was detecte d at some points of the existing protection. Protection calculations were performed to eliminate weaknesses using the FLUKA software package created for Monte Carlo simulation of physical processes. At the same time\, one of the tasks was to conduct a comparative analysis of the measured and cal culated data\, since there is practically no work on experimental verifica tion of the reliability of the results of the specified software package f or electron accelerators in the energy range up to 25 MeV.\nBased on the r esults of calculations\, a new project of local protection around the brak ing target assembly is presented. The measurement results carried out with the installed new protection showed that outside the microtron room\, the power of the equivalent dose of braking radiation coincides with the calc ulation results and does not exceed the maximum permissible value of 1.2mS v/hour (according to the rules of NRB-99/2009).\n\nhttps://events.sinp.msu .ru/event/8/contributions/616/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/616/ END:VEVENT BEGIN:VEVENT SUMMARY:Energy conversion in electronically controlled discrete ion-plasma dynamics installations DTSTART;VALUE=DATE-TIME:20220715T101000Z DTEND;VALUE=DATE-TIME:20220715T103000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-393@events.sinp.msu.ru DESCRIPTION:Speakers: Vitaly Radenko (Scientific and Production Company ”New Energy” LLC)\, Alexander Chipura (Samara University)\nThe techniq ue and technology for the creation and formation of electronically control led ion and plasma fluxes in the magnetic fields by grouping the flows wit h setting certain sequences of the self-following have been worked out to solve the problem of controlled nuclear fusion. The operation of the units is based on the physical principles of plasma and ion flows compaction wi th a discrete change in the control parameters of magnetooptical systems. Theoretical and applied aspects of the magnetodynamic flow of controlled p lasma simulation are considered. The description of an example circuit for the plasma neutron generator and the rationale for the discretization of compacted plasma and ion flows based on the introduction of the concept of flows discretes are considered. The processes of experimental installatio n of an electronically controlled ion generator and the characteristics of a prototype industrial installation are considered. Nuclear reactions sui table for modifications of such generators are considered. It is planned t hat the electronically controlled plasma energy converter device will have the design thermal power more than 10 kW\, electric power more than 5 kW. On the basis of the technology under consideration\, the neutron generato r with the plasma target will be created with the impulse of neutron flux from 1010 c−1.\n\n1. G. A. Mesyats\, Pulsed power\, Springer (2005).\n2. N. Burtebaev et al.\, World Academy of Science\, Engineering and Technolo gy. 74\, 176 (2011).\n3. V.V. Radenko etc. Advances in Engineering Researc h. 210\, 197 9(2022).\n\nhttps://events.sinp.msu.ru/event/8/contributions/ 393/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/393/ END:VEVENT BEGIN:VEVENT SUMMARY:Continuous-wave electron linacs for science and industry DTSTART;VALUE=DATE-TIME:20220715T095000Z DTEND;VALUE=DATE-TIME:20220715T101000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-259@events.sinp.msu.ru DESCRIPTION:Speakers: Dmitry Yurov ()\nSINP MSU develop normal conducting continuous-wave linear electron accelerators since 80s. Continuous-wave li nacs compared to pulsed machines make it possible to obtain electron beams with more stable energy and lower energy spread\, reduce detectors loadin g while maintaining the average intensity of events during an experiment. We present an overview of continuous-wave accelerators for both nuclear ph ysics research and applied purposes\, including superconducting accelerati ng systems. We analyze the features of the design and operation of that ty pe of accelerators\, the prospects for the development of this area.\n\nht tps://events.sinp.msu.ru/event/8/contributions/259/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/259/ END:VEVENT BEGIN:VEVENT SUMMARY:Electron accelerators design and construction at Lomonosov Moscow State University DTSTART;VALUE=DATE-TIME:20220715T093000Z DTEND;VALUE=DATE-TIME:20220715T095000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-271@events.sinp.msu.ru DESCRIPTION:Speakers: Vadim Khankin (Federal State Budget Educational Inst itution of Higher Education M.V.Lomonosov Moscow State University\, Skobel tsyn Institute of Nuclear Physics)\nThe report presents the results of the development of linear electron accelerators with energy from up to 10 MeV \, performed at the Skobeltsyn Institute of Nuclear Physics\, Lomonosov Mo scow State University\, as well as in Laboratory of Electron Accelerators MSU. Over the past year\, more than 30 accelerators of six different types have been delivered to customers. Linear accelerators for mobile\, statio nary and train cargo inspection systems with interlaced energies and pulse repetition rate up to 2 kHz\, accelerators for radiography\, a sterilizat ion accelerator with beam parameters that are adjustable over a wide range \, and an accelerator for a radiotherapy complex are described.\n\nhttps:/ /events.sinp.msu.ru/event/8/contributions/271/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/271/ END:VEVENT BEGIN:VEVENT SUMMARY:LUE-200 ACCELERATOR – THE DRIVER OF THE PULSE RESONANCE NEUTRON SOURCE IREN DTSTART;VALUE=DATE-TIME:20220715T091000Z DTEND;VALUE=DATE-TIME:20220715T093000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-458@events.sinp.msu.ru DESCRIPTION:Speakers: Anatoly Sumbaev (Joint Institute for Nuclear Researc h)\nThe linear electron accelerator LUE-200 was designed and built at the Joint Institute for Nuclear Research (Dubna) as a driver for a booster-typ e neutron source with a multiplying target - an active zone with an integr al neutron yield of ⁓ 1014 s-1\, which determines the energy and power o f the accelerated particle beam. The accelerator was designed and put into operation in stages. In 2009 - 2010 the physical start-up of the IREN ins tallation was carried out as part of the first stage of the accelerator wi th a non-multiplying target (electron gun\, one accelerating section\, one klystron\, one modulator). The first stage of the accelerator worked for the experiment for several thousand hours at a cycle frequency of 10 - 25 Hz with a beam current of 1.5 - 2.0 A\, a duration of ⁓ 100 ns and an en ergy of 30 - 35 MeV (spectrum maximum). In 2016\, the second accelerating section was installed and launched (+ the 2nd klystron with a modulator). As a result of the launch of the second stage of the accelerator (2016–2 019)\, an increase in the energy of accelerated electrons up to 70 MeV was achieved\, with an average electron beam power of up to 0.6 kW at a cycle frequency of 25–50 Hz.\nThe problems of achieving the design parameters of the accelerator and the possibility of the accelerator developing as a neutron source driver without a breeding core are considered. The plans f or the development of the accelerator provide for an increase in the cycli city of the accelerator to 100 - 120 Hz and an increase in the beam power to 1.5 kW\, which will make it possible to obtain an integral neutron yiel d from a non-multiplying W target up to 3∙1012 s-1.\n\nhttps://events.si np.msu.ru/event/8/contributions/458/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/458/ END:VEVENT BEGIN:VEVENT SUMMARY:ELECTRON ACCELERATOR FOR NEUTRON THERAPY AND RADIOISOTOPES PRODUCT ION DTSTART;VALUE=DATE-TIME:20220715T082000Z DTEND;VALUE=DATE-TIME:20220715T084000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-336@events.sinp.msu.ru DESCRIPTION:Speakers: Yu.A. Kurachenko ()\nThe paper vows to the studying the possibility of high‑power electron accelerators for neutron therapy and radioisotopes production. Computations are performed for both applicat ions\, and the results are normalized to the characteristics of the modern -day MEVEX accelerator (average electron current 4 mA at a monoenergetic e lectron beam 35 MeV). \nThe unifying problem for applications is the task of cooling the target: at a beam energy ~ 140 kW\, almost half or more of this energy is released directly into the target. Therefore\, a liquid hea vy metal was chosen as a target to combine high quality thermohydraulics w ith maximum production of both bremsstrahlung radiation and photoneutrons. The target was optimized using precise codes for the tasks of radiation t ransport and thermal hydraulics. Optimization was carried out for the inst allation as a whole: 1) the target configuration\; 2) the composition of t he material and the configuration of the photoneutron removal unit for neu tron capture therapy (NCT) and 2) the scheme of generating bremsstrahlung for radioisotopes production. The photoneutron block provides an acceptabl e beam quality for NCT with a large neutron flux density at the output: ~ 2·1010 cm-2s-1\, which is an order of magnitude higher than the values at the output of existing and projected reactor beams. Such intensity at the beam output will allow to abandon the fractionated irradiation in many ca ses. As for radioisotopes production\, using optimal reaction channel (γ\ , n) 43 radioisotopes in 5 groups were received. For example\, by the 100M o(γ\, n)99Mo reaction the precursor 99Mo of main diagnostic nuclide 99mTc with specific activity ~ 6 Ci/g and total activity of the target 1.8 kCi could be produced after 1 day irradiation exposure. The proposed schemes o f generation and extraction of photoneutrons and bremsstrahlung have a num ber of advantages over traditional methods: a) the use of electron acceler ators for the production of neutrons is much safer and cheaper than the us e of reactor beams\; b) the accelerator with the target and the beam outpu t unit with the necessary equipment and tooling can be easily placed on th e territory of the clinic\; c) the propose liquid gallium target for NCT\, which also serves as a coolant\, is an “environmentally friendly” mat erial: its activation is relatively small and quickly (four days) decrease s to the background level.\n\n1. Yu.A. Kurachenko\, H.A. Onischuk et al. D OI 10.26583/npe.2019.4.12\n2. Yu.A. Kurachenko\, H.A. Onischuk et al. DOI: 10.12737/1024-6177-2019-64-5-48-53\n\nhttps://events.sinp.msu.ru/event/8/ contributions/336/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/336/ END:VEVENT BEGIN:VEVENT SUMMARY:The experimental research of cyclotron DC-280 work DTSTART;VALUE=DATE-TIME:20220715T080000Z DTEND;VALUE=DATE-TIME:20220715T082000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-312@events.sinp.msu.ru DESCRIPTION:Speakers: Vasilii Semin ()\nThe DC280 is the high current cycl otron with design beam intensities up to 10 pμA for ions with energy from 4 to 8 MeV/nucleon. It was developed and created at the FLNR JINR. The fi rst was extracted from the cyclotron on January 17\, 2019. Experiments on acceleration of 84Kr\, 12C\, 40Ar\, 48Ca\, 48Ti\, 52Cr and 54Cr beams prod uction were carried out. The following intensities of accelerated beam hav e been achieved: 1.43 pμA for 84Kr+14\; 10 pμA for 12C+2\; 9\,2 pμA for 40Ar+7\; 7\,7 pμA for 48Ca+7. The long time experiments were done in 202 0-2022. The features of work of High Voltage axial injection systems\, bun cher systems and Flat-top systems were explored. The work of accelerator w as stable and high efficiency. The total acceleration efficiency from ion source to transport channel was about 46%.\n\nhttps://events.sinp.msu.ru/e vent/8/contributions/312/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/312/ END:VEVENT BEGIN:VEVENT SUMMARY:HIGH-POWER ELECTON ACCEERATORS FOR THE PRODUCTION OF MEDICAL RADIO ISOTOPES DTSTART;VALUE=DATE-TIME:20220715T074000Z DTEND;VALUE=DATE-TIME:20220715T080000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-335@events.sinp.msu.ru DESCRIPTION:Speakers: Andrey Ermakov ()\nIn present time there is a tenden cy to avoid nuclear reactors in favor of electron accelerators as the main instrument for the production of medical radioisotopes. The report is dev oted to high-power industrial accelerators developed by different manufact urers\, including Laboratory of Electron Accelerators MSU Ltd. The main re quirements for an electron beam are considered based on the existing metho ds of the radioisotopes production. The advantages and disadvantages of va rious schemes of high-power accelerators\, beam transportation systems\, a nd other are discussed in the article.\n\nhttps://events.sinp.msu.ru/event /8/contributions/335/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/335/ END:VEVENT BEGIN:VEVENT SUMMARY:Compton X-ray source based on 50-MeV accelerator and its applicati ons DTSTART;VALUE=DATE-TIME:20220715T072000Z DTEND;VALUE=DATE-TIME:20220715T074000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-521@events.sinp.msu.ru DESCRIPTION:Speakers: Igor Artyukov (Lebedev Physical Institute RAS)\nLase r-electron X-ray source based on inverse Compton (Thomson) scattering is a novel type of high spectral brightness X-ray sources. The state-of-the-ar t design of electron accelerators and high power lasers had paved the way for a construction of these compact facilities that are able to produce a nearly synchrotron-quality X-ray radiation for material and life science s tudies and many other fields [1\, 2]. The essential added values are the g eneration of picosecond X-ray pulses and tunable output photon energy spec trum with a potential extension towards the region of gamma radiation.\n\n The presentation deals with the main principles\, layouts and possible app lications of Compton X-ray sources based on a 50-MeV electron accelerator specified for production of X-ray photons with the energy of 20-45 keV. Th e design options include a utilization of an electron storage ring for hig h average photon flux generation[3].\n\n1. I .A. Artyukov\, E.G. Bessonov\ , M. V. Gorbunkov\, Y. Y. Maslova\, N. L. Popov\, and A. V. Vinogradov\, Laser and Particle Beams 34\, 637 (2016).\n2. I. A.Artyukov\, E. G. Besson ov\, R. M. Feshchenko\, M.V.Gorbunkov\, Yu. Ya. Maslova\, N.L Popov\, N.V. Dyachkov\, A A Postnov\, S.L. Vinogradov and A.V.Vinogradov\, Journal of P hysics: Conference Series 784\, 012002 (2017).\n3. L. Ovchinnikova\, V. Sh vedunov\, A. Mikhailichenko\, E. Bessonov and M. Gorbunkov\, A comparativ e study of low energy compact storage rings for a Thomson scattering X-ray source. In 7th Int. Particle Accelerator Conf.(IPAC'16)\, Busan\, Korea\, May 8-13\, 2016.\n\nhttps://events.sinp.msu.ru/event/8/contributions/521/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/521/ END:VEVENT BEGIN:VEVENT SUMMARY:COMPTON GAMMA-RAY SOURCE BASED ON 500 MEV ELECTRON ACCELERATOR: UN IQUE PARAMETERS AND POSSIBLE APPLICATIONS DTSTART;VALUE=DATE-TIME:20220715T070000Z DTEND;VALUE=DATE-TIME:20220715T072000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-200@events.sinp.msu.ru DESCRIPTION:Speakers: Aleksander Kuznetsov (Skobeltsyn Institute of Nuclea r Physics\, Lomonosov Moscow State University\, Russia\; Faculty of Physic s\, Lomonosov Moscow State University\, Russia)\nThe perspectives and the program of experimental research in the field of nuclear physics on the pr ojected source of monoenergetic gamma-quanta based on the Compton backscat tering effect of laser radiation from a linear electron accelerator with a n energy of 500 MeV are discussed. It is planned to create a facility with a high-intensity beam of monoenergetic gamma-quanta with energies from a few to 30 MeV. \nThe outstanding parameters of the facility\, primarily in terms of monochromatization and beam intensity\, will make it possible to obtain new unique data in the field of the structure of atomic nuclei\, t he physics of photonuclear reactions\, including the photofission reaction \, and will make it possible to implement methods of both direct measureme nts and induced activity at a qualitatively new level. New data obtained u sing monoenergetic photons will make it possible to obtain new reliable in formation about a number of fundamental problems of electromagnetic intera ctions of atomic nuclei\, primarily\, such as the collective modes of nucl ear excitations\, the relationship between various decay channels of highl y excited states of nuclei\, the mechanisms of reactions with the emission of various the number of nucleons. The main problems that will be studied at the facility are the structure of the giant dipole resonance (GDR)\, t he parameters of nuclear deformation\, and the characteristics of such GDR formation processes as isospin and configurational splitting of the GDR. The implementation of the induced activity method with the beam parameters that are planned to be achieved will make it possible to obtain data on t he cross sections of partial photoneutron reactions with high accuracy and reliability and solve the long-standing and well-known problem of signifi cant discrepancies in the results of different photonuclear experiments. \ nThe unique parameters of the gamma-quantum beam at the facility will also make it possible to advance significantly in the field of research in nuc lear astrophysics. For the first time\, it will be possible to measure the cross sections of photonuclear reactions in the region of the correspondi ng energy thresholds on bypassed nuclei\, which are necessary for studying the currently unresolved scientific problem of the origin of such nuclei. A separate program of research on the projected gamma-radiation source wi ll be devoted to the study of nuclear photofission. Using a beam of quasi- monoenergetic photons with high resolution\, mass\, charge\, and energy de pendences of photofission fragments corresponding to decays of well-define d excited states in different minima between fission barriers will be stud ied.\n\nhttps://events.sinp.msu.ru/event/8/contributions/200/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/200/ END:VEVENT BEGIN:VEVENT SUMMARY:ALGORITHMS FOR DESIGNING POWERFUL MULTICAVITY KLYSTRONS DTSTART;VALUE=DATE-TIME:20220715T151000Z DTEND;VALUE=DATE-TIME:20220715T153000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-478@events.sinp.msu.ru DESCRIPTION:Speakers: Valentin Ivanov (BINP SB RAS)\nThe Super S-tau Facto ry project [1]\, carried out by the Institute of Nuclear Physics of the Si berian Branch of the Russian Academy of Sciences\, makes the development o f a 50-megawatt S-band klystron especially topical. The paper describes th e algorithms for calculating and designing such a klystron\, as well as th e characteristics of the program created for this purpose. Comparisons of the results obtained by this program with the results of calculations usin g the CST Microwave Studio are given.\nAlgorithms for designing individual elements and assemblies of advanced multi-beam klystrons and sheet-beam k lystrons (electron guns\, cavities etc/) based on the boundary element met hod are described in the author's monograph [2].\n\n1. https://ctd.inp.nsk .su/c-tau/.\n2. V. Ivanov. Computational methods\, optimization and synthe sis in electron optics. - Hmbg: Palmarium Academic Publishing\, 2016. -525 pp.\n\nhttps://events.sinp.msu.ru/event/8/contributions/478/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/478/ END:VEVENT BEGIN:VEVENT SUMMARY:MODELLING OF ION TRANSFER PROCESSES IN A MAGNETO-OPTICAL SYSTEM OF SOLENOIDS AND MAGNETIC QUADRUPOLE LENSES WITH DISCRETE FLOW COMPACTION DTSTART;VALUE=DATE-TIME:20220715T145000Z DTEND;VALUE=DATE-TIME:20220715T151000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-390@events.sinp.msu.ru DESCRIPTION:Speakers: Илья Васильев (Владимирович) \, Aleksandr Bagrov (Romanovich)\nTo optimize the processes of nuclear fus ion on the ion-plasma generator [1]\, a model was constructed that describ es the dynamics of particle motion inside the fusion chamber. The synthesi s chamber is a magneto-optical system of solenoids and quadrupole lenses\, thereby performing the functions of confining and focusing ion flows. Usi ng known formulas for the magnetic field of a finite-dimensional solenoid [2] and solving these equations numerically\, it is possible obtain the di stribution of the magnetic field for a system of solenoids. Performing a s imilar calculation for magnetic quadrupole lenses\, it is possible calcula te the superposition of a system of such fields\, thereby obtaining the ge neral picture of the magnetic field inside the synthesis chamber presented in [1].\nThe plasma dynamics inside the synthesis chamber can be describe d using the equations of magnetohydrodynamics. In our case\, the plasma mo ves in a magnetostatic field\, but which varies discretely. Calculations h ave been made for individual magnetic quadrupole lenses consequence for ch arged particle flows compacting in strong magnetic fields\, including puls ed ones\, and their advantages have been well studied and known [3–5]. I on fluxes are considered as an ideal gas when describing particle velociti es and describe them by Maxwell's equation. By changing the parameters of the magnetic lens\, it is possible to change the parameters of the current s inside the synthesis chamber\, which just affect the distribution of par ticles in space\, which leads to a more structured target for more accurat e further analysis bombardment by other streams. As the result of the work \, graphical dependences of the distribution of microcurrents and concentr ations in the optimal sequence of solenoid and quadrupole magnetic fields are obtained.\n\n1. Dolgopolov M.V.\, Radenko V.V.\, Zanin G.G. etc. 2022 Electronically Controlled Plasma Power Devices for Sustainable and Environ mentally Friendly Electric Energy Technologies // Advances in Engineering Research. Issue 210. P. 197-205\n2 Callaghan E. E.\, Maslen S. H. 1960 NAS A Technical Note D-465\n3. Watterson J I W\, 2000 International Atomic Ene rgy Agency 31 P. 5-14\n4. Dolgopolov M V et al.\, 2019 EPJ Web of Conferen ces 222 02014\n5. Tyrsa V E\, Burtseva L P\, 2003Technical Physics 48(7) P . 807-812\n\nhttps://events.sinp.msu.ru/event/8/contributions/390/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/390/ END:VEVENT BEGIN:VEVENT SUMMARY:EMISSION NANOSTRUCTURE SOURCES IN MULTI-WIRE PROPORTIONAL CHAMBERS WORKING AT LHC DTSTART;VALUE=DATE-TIME:20220715T143000Z DTEND;VALUE=DATE-TIME:20220715T145000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-306@events.sinp.msu.ru DESCRIPTION:Speakers: G. E. Gavrilov (National Research Center “Kurchato v institute”\, PNPI)\nThe results of research of the origin of the spont aneous electron emission sources generation in multi-wire proportional cha mbers (MWPC) at LHCb experiment in Large Hadron Collider (LHC) [1] are pre sented. Formation of dotted carbon nanostructures on cathode copper foil w ith sp1\, sp2 and sp3 hybridization of electron levels is shown up as a re sult of complex research by atomic-force microscopy (AFM)\, elemental anal ysis and Raman spectroscopy methods of cathode samples from MWPC demounted from facility. Carbon nanostructures presence in the area of cathode spon taneous emission currents generation is proved by effect of resistive shif t in current-voltage characteristic (I-V curve) measurements by AFM method s. Moreover according to AFM morphology of the surface of these structures resembles the results of research of nanocarbon formation derived under l aboratory conditions at high temperature in vacuo.\n Frenkel-Pool model [3 \,4] is chosen for analysis of the emission ability of the cathode formati ons by hysteresis I-V curve due to absence of the significant morphologica l defects increasing the aspect ratio on the cathode surface. According to this model electrons are emitted by electrically active impure centers in cathode carbonized layer at reaching the activation energy (Ео). Estima tion based on obtained I-V curves shows that Ео about 0.05 – 0.06 eV f or MWPC cathode samples.\n\n1. F.P. Albicocco et al.\, Journal of Instrume ntation. 14. 11031 (2019)\n2. A. Dzyuba\, G. Gavrilov\, I. Karpov\, M. Buz overya et al.\, Book of abstracts 71 Int. Conf. “Nucleus-2021”. 165 (2 021).\n3. А.I. Ivanov et al.\, Fizika I Tekhnika Poluprovodnikov. 51. 135 7 (2017).\n4. I.V. Kurkina et al.\, J. Phys. D. Appl. Phys. 49. Art.no 095 303 (2016).\n\nhttps://events.sinp.msu.ru/event/8/contributions/306/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/306/ END:VEVENT BEGIN:VEVENT SUMMARY:Non-destructive measurement of detailed transverse beam distributi on with the use of an ionization monitor DTSTART;VALUE=DATE-TIME:20220715T141000Z DTEND;VALUE=DATE-TIME:20220715T143000Z DTSTAMP;VALUE=DATE-TIME:20260513T185034Z UID:indico-contribution-37-530@events.sinp.msu.ru DESCRIPTION:Speakers: Konstantin Timoshenko (JINR)\nThe constant monitorin g of the uniformity of the density distribution of the flux of the acceler ated particles is required in various applied fields as such as the studie s of biological objects and of radiation resistance of electronic devices. The ionization monitor has been developed at FLNR JINR in order to make t he non-destructive detailed high precision measurement of the transverse p rofile of a wide beam of accelerated particles. The monitor design is aime d at measuring the concentration of residual gas ions arising along on the beam path. The distribution of the ions is proportional to the distributi on of the particle flux density. The ions are extracted from the beam regi on by a constant electric field larger than 0.2 kV/cm and then are acceler ated by a sawtooth voltage with a frequency of 2 Hz. During the extraction the ions get the kinetic energy proportional to the distance traveled in a constant field and to the value of the subsequent accelerating voltage. The extracted ions enter two consecutive electrostatic analyzers separated by a plate with 1 mm slit. Ions can enter the second analyzer through thi s slit only if they were created in a narrow beam region\, which position depends on the value of the sawtooth voltage. The monitor sensitivity is i ncreased by MCP (Micro channel plate) placed after the analyzers. The coll ector divided into 31 strips is located after the MCP. The current from th e strips is digitized by several ADC (Analog to digital converter) channel s. The first coordinate of the ion formation position is determined by the number of the collector strip. The second coordinated is extracted from t he value of the sawtooth voltage measured by another ADC. The number of em ployed ADCs allows every second measurement of a detailed two-dimensional distribution with 31x31 points on a beam cross section up to 45 mm in diam eter. Because the ions of the residual gas are collected from the beam pat h 90 mm long\, the sensitivity of the monitor is almost two orders of magn itude higher than the existing analogs [1\, 2]. The monitor can also be us ed to measure the profile of secondary beams.\n\nhttps://events.sinp.msu.r u/event/8/contributions/530/ LOCATION: Физический ф-т\, ауд. 5-42 URL:https://events.sinp.msu.ru/event/8/contributions/530/ END:VEVENT END:VCALENDAR