A. Palitsin, V. Zaslavsky, Yuri V. Rodin, M. Goykhman, A. Gromov, Yury M. Guznov, A. Panin, V. Parshin, A. Malkin, N. Ginzburg
{"title":"Design and experimental testing of W-band planar surface-wave oscillator driven by sheet high-current relativistic electron beam","authors":"A. Palitsin, V. Zaslavsky, Yuri V. Rodin, M. Goykhman, A. Gromov, Yury M. Guznov, A. Panin, V. Parshin, A. Malkin, N. Ginzburg","doi":"10.56761/efre2022.s3-o-045201","DOIUrl":"https://doi.org/10.56761/efre2022.s3-o-045201","url":null,"abstract":"The paper presents the results of theoretical and experimental studies of W-band planar surface-wave oscillator driven by sheet high-current relativistic electron beam with experimentally realized parameters on the basis of the “SINUKI” accelerator (IAP RAS, N. Novgorod, 1 kА / 650 keV / 17 ns). In simulation of the oscillator nonlinear dynamics, we used both advanced quasi-optical approach and direct 3D PIC modeling. In the experiment, the microwave generation with a frequency of about 75 GHz was registered by microwave detector; measured pulse duration was about 4 ns. The output power measured by the calorimetric method was about 25 MW which is in a satisfactory agreement with the theoretical predictions. The important specific of the experimental set-up is the use of highly efficient side wall absorber for the implementation of a single-mode single-frequency generation regime.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121485191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Afanasiev, I. Bandurkin, A. Gorbachev, K. Mineev, N. Peskov, A. V. Savilov, A. Vikharev
{"title":"Development of photoinjector in IAP RAS","authors":"A. Afanasiev, I. Bandurkin, A. Gorbachev, K. Mineev, N. Peskov, A. V. Savilov, A. Vikharev","doi":"10.56761/efre2022.s1-p-038101","DOIUrl":"https://doi.org/10.56761/efre2022.s1-p-038101","url":null,"abstract":"A photoinjector electron accelerator is being developed at the Institute of Applied Physics of the Russian Academy of Sciences, in which it is planned to implement sequential acceleration of particles up to energies of about 20 MeV. The first section of the complex, designed for an output particle energy of 3.5 MeV, can be used for experimental study of promising regimes of terahertz radiation from short electron bunches. After additional acceleration in the second section, bunches with small transverse emittance and velocity spread can be injected into a plasma accelerator cell to further increase their average energy to the GeV level and to use them as an active medium in an X-ray FEL. In addition, work is underway to study photocathodes based on diamond films.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121577907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Ryskulov, M. Belov, V. Uglov, S. Zlotski, K. Jin, I. A. Ivanov, A. Kozlovskiy, M. Zdorovets, A. Kurakhmedov, A. Sapar, D. Mustafin, Y. V. Bikhert, T. Kuznetsova, V. Lapitskaya, A. Khabarava
{"title":"Microstructural stability and mechanical properties of the system V-Nb-Ta-Ti under helium ion irradiation","authors":"A. Ryskulov, M. Belov, V. Uglov, S. Zlotski, K. Jin, I. A. Ivanov, A. Kozlovskiy, M. Zdorovets, A. Kurakhmedov, A. Sapar, D. Mustafin, Y. V. Bikhert, T. Kuznetsova, V. Lapitskaya, A. Khabarava","doi":"10.56761/efre2022.r4-p-033601","DOIUrl":"https://doi.org/10.56761/efre2022.r4-p-033601","url":null,"abstract":"The purpose of this work is to study the effect of irradiation with low-energy helium ions with an energy of 40 keV on the structural-phase state of multicomponent solid solutions based on V-Nb-Ta-Ti. This type of irradiation at fluence of 2×1017 He/cm2 make it possible to simulate the effects occurring in a nuclear reactor. since during its operation, a large number of neutrons are released, causing nuclear reactions in the material with the formation of inert gases. As a result of the work carried out, it was found that all alloys of the system belong to equiatomic single-phase solid solutions and show a greater value of deformation of the crystal lattice and stress after irradiation compared with pure vanadium. It has been proposed that increasing the number of elements in the V-Nb-Ta-Ti system reduces the mobility of defects created by irradiation, which leads to the formation of smaller clusters and an increase in microdeformation.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121740412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. M. Oleinik, V. Aleksandrov, A. V. Branitskii, I. Frolov, E. V. Grabovskiĭ, E. I. Predkova, O.B. Reshetnjak, S. Tkachenko
{"title":"Leakage of current from MITL with ceramic coating cathode","authors":"G. M. Oleinik, V. Aleksandrov, A. V. Branitskii, I. Frolov, E. V. Grabovskiĭ, E. I. Predkova, O.B. Reshetnjak, S. Tkachenko","doi":"10.56761/efre2022.s2-o-009807","DOIUrl":"https://doi.org/10.56761/efre2022.s2-o-009807","url":null,"abstract":"At the Angara-5-1 installation the experiments were carried out to study the processes occurring during the passage of current in a vacuum transporting line in which the cathode was protected by a ceramic coating. The linear current density was about 1–2 MA/cm; the time of the current rise to the maximum was ~100 ns. It is shown that in the case of coating the MITL cathode with ceramics, not all the current entering the MITL reaches its end.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123817509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Positron annihilation analysis of nanosized metal coatings Zr/Nb after He+ ion irradiation","authors":"R. Laptev, A. Lomygin, D. Krotkevich","doi":"10.56761/efre2022.r4-o-031202","DOIUrl":"https://doi.org/10.56761/efre2022.r4-o-031202","url":null,"abstract":"New technologies for obtaining structural materials resistant to hydrogen and radiation damage are pressing problems of materials science. Hydrogen damage and radiation degradation are important factors limiting the fatigue life of structural materials. One promising alternative in the development of radiation-hydrogen resistant materials with improved physical and mechanical properties is the application of nanoscale metal systems (NMS). The present work is devoted to the study of the defect structure of Zr/Nb NMS with a thickness of separate layers of Zr and Nb of 100±10 nm after irradiation by He+ ions with doses from 3⸱1016ions/cm2 to 3⸱1017 ions/cm2 using positron annihilation spectroscopy and XRD analysis.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131295632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Повышение электрической прочности ускоряющей системы малогабаритного ускорителя ионов","authors":"И. А. Каньшин","doi":"10.56761/efre2022.c1-o-004101","DOIUrl":"https://doi.org/10.56761/efre2022.c1-o-004101","url":null,"abstract":"Настоящая работа посвящена изучению влияния на электропрочность ускоряющей системы малогабаритного ускорителя ионов запыления внутренней поверхности изолятора, а также “тройных” точек и кромок электродов, имеющих малый радиус кривизны. Для этого выполнялись расчёты электрических полей в ускоряющей системе, позволившие выявить участки с локальным повышением напряженности электрического поля. Приведены результаты расчетов, демонстрирующие возможность снижения локальной напряженности электрического поля в ускоряющей системе за счет изменения геометрии высоковольтного электрода и конструкции изолятора","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131378126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Isakova, D. Kolodko, A. Kaziev, G. I. Rykunov, A. Tumarkin
{"title":"Electrical characteristics of a hot-target HiPIMS discharge in reactive N 2 /Ar environment","authors":"A. Isakova, D. Kolodko, A. Kaziev, G. I. Rykunov, A. Tumarkin","doi":"10.56761/efre2022.c1-o-002401","DOIUrl":"https://doi.org/10.56761/efre2022.c1-o-002401","url":null,"abstract":"In this work, we study the effects introduced by adding reactive gas (nitrogen) to a magnetron discharge with a thermally insulated chromium target from the point of view of its electrical parameters. The dependences of the current-voltage characteristics and the shapes of the current and voltage pulses of a high-current pulsed magnetron discharge on the reaction gas flow are studied. The voltage and current waveforms exhibit a transition into unstable mode with increasing the reactive gas flow and pulse duration. In this mode, in power-regulation regime of the power supply, the pulses follow certain recurring patterns characterized by the current oscillations in a wide range from several to tens of amps","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131602745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Grishkov, M. Vorobyov, S. Doroshkevich, V. Shklyaev
{"title":"Auxiliary discharge of a wide aperture electron accelerator based on ion-electron emission","authors":"A. Grishkov, M. Vorobyov, S. Doroshkevich, V. Shklyaev","doi":"10.56761/efre2022.s1-p-049002","DOIUrl":"https://doi.org/10.56761/efre2022.s1-p-049002","url":null,"abstract":"In this work, the region of the auxiliary discharge of an electron accelerator based on a non-self-sustained high-voltage glow discharge is investigated. The paper presents the analytical approach and the results of test modeling of a glow discharge, which plays the role of an auxiliary discharge for plasma generation with subsequent extraction of ions from it into the main high-voltage gap. In this glow discharge, the anode is two tungsten wires, and the cathode is the inner walls of the chamber. In the model, these regions are considered as separate independent nodes, which are connected by a layer of conducting plasma that matches the boundary conditions. A model based on the representation of an auxiliary glow discharge in the form of matched electron and ion diodes makes it possible to estimate the range of possible voltages for each of the near-electrode layers and to determine the plasma potential.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125293848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Н А Прокопенко, А.Д. Тересов, О. В. Крысина, Е.А. Петрикова, М. Е. Рыгина
{"title":"Оптимизация режимов предварительной электронно-ионно-плазменной обработки поверхностного слоя силумина до нанесения нитридных покрытий","authors":"Н А Прокопенко, А.Д. Тересов, О. В. Крысина, Е.А. Петрикова, М. Е. Рыгина","doi":"10.56761/efre2022.c3-p-948701","DOIUrl":"https://doi.org/10.56761/efre2022.c3-p-948701","url":null,"abstract":"В данной работе показано, что для увеличения адгезии системы «нитридное покрытие/подложка» и ее износостойкости, где в роли покрытия выступают бинарные системы TiN, ZrN, CrN, MoN, рационально использовать предварительные этапы электронно-ионно-плазменной обработки, такие как ионно-плазменное травление в газовой плазме дугового разряда с накаленным и полым катодами, нанесение металлического подслоя (≈100 нм) и воздействие импульсным электронным пучковом субмиллисекундной длительности. При выборе режимов предварительной электронно-пучковой обработки с целью улучшения адгезионных, механических и трибологических свойств системы «нитридное покрытие/силуминовая подложка» рационально выбирать количество импульсов воздействия 15 и выше, длительность воздействия ≈150 мкс, плотность энергии электронного пучка в диапазоне 25–30 Дж/см2. Показано, что многоцикловая (не менее 2 циклов) электронно-пучковая обработка приводит к значительному увеличению твердости и износостойкости системы «нитридное покрытие/силуминовая подложка».","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131850758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Uglov, V. Kholad, P. Grinchuk, M. Kiyashko, I. A. Ivanov, A. Kozlovskiy, M. Zdorovets
{"title":"Microstructure and phase state of a composite based on silicon carbide irradiated with krypton ions","authors":"V. Uglov, V. Kholad, P. Grinchuk, M. Kiyashko, I. A. Ivanov, A. Kozlovskiy, M. Zdorovets","doi":"10.56761/efre2022.r4-p-052701","DOIUrl":"https://doi.org/10.56761/efre2022.r4-p-052701","url":null,"abstract":"Composite based on silicon carbide was irradiated with krypton ions with an energy of 280 keV fluence 1∙1013–5∙1015 cm-2. Irradiation leads to irradiation growth of the crystal lattice, as well as amorphization of the near-surface layer.","PeriodicalId":156877,"journal":{"name":"8th International Congress on Energy Fluxes and Radiation Effects","volume":"144 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120938742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}