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Item A low-cost microwave filter with improved passband and stopband characteristics using stub loaded multiple mode resonator for 5g mid-band applications(MDPI, 2021) Alnahwi, Falih M.; Al-Yasir, Yasir I.A.; Almtrod, Abdalghfor Abdalghfar A; Abdullah, Abdulkareem S.; Abd-Alhameed, Raed A.
Item Simulation of electrical system protection against the effects of a magnetic storm(De Gruyter, 2023) Štork, Milan; Mayer, DanielItem Metaverse and AI Digital Twinning of 42SiCr Steel Alloys(MDPI, 2023) Khalaj, Omid; Jamshidi, Mohammad; Hassas, Parsa; Hosseininezhad, Marziyeh; Mašek, Bohuslav; Štádler, Ctibor; Svoboda, Jiří
Item Gamma ray detection performance of newly developed MAPD‑3NM‑II photosensor with LaBr3 (Ce) crystal(Nature Research, 2022) Holík, Michael; Ahmadov, F.; Sadigov, A.; Ahmadov, G.; Berikov, D.; Mamedov, Fadahat; Naghiyev, J.; Štekl, Ivan; Sadygov, Z.; Mammadli, A.; Garibli, A.; Urban, Ondřej; Zich, JanItem Improvement of parameters of micro-pixel avalanche photodiodes(Institute of Physics, 2022) Sadigov, A.Z.; Ahmadov, F. I.; Sadygov, Z. Y.; Ahmadov, G. S.; Berikov, D.; Holík, Michael; Mammadli, A.; Akbarov, R. A.; Nuruyev, S. M.; Ajdarli, K.; Garibli, A.; Doganci, E.; Mora Sierra, Yesid; Yilmaz, E.The paper is concerned with the parameter study of a new generation of micro-pixel avalanche photodiodes (MAPD) with deeply buried pixel structure, also named silicon photomultipliers (SiPM) or multi-pixel photon counter (MPPC). The new MAPD of type MAPD-3NM was manufactured in the frame of collaboration with Zecotek Company. Measurements were carried out and discussed in terms of the important parameters such as the current-voltage and capacitance-voltage characteristic, gain, the temperature coefficient of breakdown voltage, breakdown voltage, and gamma-ray detection performance using an LFS scintillator. The obtained results showed that the newly developed MAPD-3NM photodiode outperformed the previous generation in most parameters and can be successfully applied in space application, medicine, high-energy physics, and security. New proposals are also discussed, for further improvement of the parameters of the MAPD photodiodes that will be produced in the coming years. © 2022 IOP Publishing Ltd and Sissa Medialab.Item Improved algorithms for determination of particle directions with Timepix3(IOP Publishing, 2022) Mánek, Petr; Bergmann, Benedikt; Burian, Petr; Garvey, Declan; Meduna, Lukáš; Pospíšil, Stanislav; Smolyanskiy, Petr; White, E.Timepix3 pixel detectors have demonstrated great potential for tracking applications. With 256 × 256 pixels, 55 μm pitch and improved resolution in time (1.56 ns) and energy (2 keV at 60 keV), they have become powerful instruments for characterization of unknown radiation fields. A crucial pre-processing step for such analysis is the determination of particle trajectories in 3D space from individual tracks. This study presents a comprehensive comparison of regression methods that tackle this task under the assumption of track linearity. The proposed methods were first evaluated on a simulation and assessed by their accuracy and computational time. Selected methods were then validated with a real-world dataset, which was measured in a well-known radiation field. Finally, the presented methods were applied to experimental data from the Large Hadron Collider. The best-performing methods achieved a mean absolute error of 1.99° and 3.90° in incidence angle θ and azimuth φ, respectively. The fastest presented method required a mean computational time of 0.02 ps per track. For all experimental applications, we present angular maps and stopping power spectra.Item Dlouhá cesta od základního výzkumu k ultravysokopevnému zápustkovému výkovku(Svaz kováren ČR z.s., 2022) Mašek, Bohuslav; Štádler, Ctibor; Červenka, František; Papežík, Miroslav; Svoboda, Jiří; Holota, Radek; Georgiev, Vjačeslav; Skála, Jiří; Khalaj, Omid; Hammerbauer, JiříIn the last two decades, in search for savings, new technologies for steel processing have begun to be developed, which would bring improvements in performance according to the requirements of designers and specific applications. The driving force was the automotive industry, which, in an effort to reduce costs, established several important directions in the sheet metal research, enabling interesting combinations of ductility and strength to be achieved with an economical method of alloying. But even the area of die forgings can benefit from the knowledge gained in the future. One of such projects, focused on the integration of the Q-P process into the production of ultra-high strength die forgings, was carried out by Kovárna VIVA, Zlín together with the Department of Electronics and Information Technology of the University of West Bohemia.Item The Influence of Cooling Rate between Ms and Mf on the Mechanical Properties of Low Alloy 42SiCr Steel Treated by the Q-P Process(MDPI, 2022) Khalaj, Omid; Saebnoori, Ehsan; Mašek, Bohuslav; Štádler, Ctibor; Hassas, Parsa; Svoboda, JiříA series of experiments was conducted by quenching and partitioning (Q-P) heat-treated alloys to investigate the effect of cooling intensity on the mechanical properties of low alloy steel 42SiCr. By applying a conventional heat treatment, reasonable high strength can be achieved; however, the alloys become more brittle. To obtain an optimal balance, advanced heat treatment methods like the Q-P process can be used. It consists of quenching to temperatures between martensite start and martensite finish temperatures and holding, which leads to the stabilization of untransformed austenite by carbon partitioning. The martensitic microstructure is then formed with a small volume fraction of retained austenite embedded on a microscopic scale. The material’s deformability can be significantly improved by using such heat treatment processes. Moreover, to improve advanced high strength properties (AHSS), an additional Q-P process can be applied, which leads to erasing the influence of cold forming as well as enhancement of the mechanical properties. Several combinations of the Q-P process with/without partitioning were performed with various cooling rates for both heat treatment methods. Ultimate Tensile Strength (UTS), Ductility and Hardness (HV10), as well as the microstructure of the alloys, are compared to evaluate the cooling intensity effects. The cooling rate is found not to be a significant factor influencing mechanical properties, which is a crucial point for practical material heat treatment.Item Evaluation of the Effect of Varying the Angle of Asphaltic Concrete Core on the Behavior of the Meijaran Rockfill Dam(MDPI, 2022) Khalaj, Omid; Ahmadi, Alireza Ayati; Nejad, Sobhan Abedin; Mašek, Bohuslav; Štádler, Ctibor; Skála, JiříItem Switchable Broadband-to-Tunable Narrowband Magnetic Probe for Near-Field Measurements(MDPI, 2022) Almtrod, Abdalghfor Abdalghfar A; Kubík, ZdeněkItem Electronic System for Reduction of Transient Inrush Current in Transformer(Egyptian Computer Society, 2022) Hammerbauer, Jiří; Štork, MilanItem Characterization of the miniPlanacon XPM85112-S-R2D2 MCP-PMT with custom modified backend electronics(Elsevier, 2022) Komárek, Tomáš; Urbášek, Vladimír; Brandt, A.; Černý, Karel; Chirayath, V.A.; DeFazio, J.; Georgiev, Vjačeslav; Hail, S.; Hrabovský, Miroslav; Kubík, Zdeněk; Nožka, Libor; Orlov, D.; Pinto, S. Duarte; Rijssenbeek, M.; Sýkora, Tomáš; Yang, F.; Zich, JanItem Omnidirectional Autonomous Robotic Platform for Advanced Driver Assistance Systems Testing —Movement, Localization and Navigation Possibilities(Korean Society of Automotive Engineers, 2022) Lufinka, Ondřej; Kadeřábek, Jan; Prstek, Juraj; Skála, Jiří; Kosturik, KamilItem Design a Compact Printed Log-Periodic Biconical Dipole Array Antenna for EMC Measurements(MDPI, 2022) Almtrod, Abdalghfor Abdalghfar A; Kubík, ZdeněkItem First Search for Exclusive Diphoton Production at High Mass with Tagged Protons in Proton-Proton Collisions at √s=13 TeV(American Physical Society, 2022) Tumasyan, A.; Georgiev, Vjačeslav; Hammerbauer, Jiří; Linhart, Richard; Peroutka, Zdeněk; Urban, Ondřej; Zich, Jan; CMS, Collaboration; TOTEM, CollaborationItem Trapezoid-shaped resonators to design compact branch line coupler with harmonic suppression(Elsevier, 2022) Siahkamari, Hesam; Jahanbakhshi, Maryam; Al-Anbagi, Haidar Najim Abbod; Almtrod, Abdalghfor Abdalghfar A; Pokorný, Michal; Linhart, RichardItem Hard color-singlet exchange in dijet events in proton-proton collisions at √s=13 TeV(American Physical Society, 2021) Sirunyan, A. N.; Georgiev, Vjačeslav; Hammerbauer, Jiří; Linhart, Richard; Peroutka, Zdeněk; Urban, Ondřej; Vavroch, Ondřej; Zich, Jan; CMS, Collaboration; TOTEM, CollaborationItem Measurement of single-diffractive dijet production in proton–proton collisions at √ s = 8 TeV with the CMS and TOTEM experiments(Springer, 2020) Sirunyan, A. M.; Georgiev, Vjačeslav; Hammerbauer, Jiří; Linhart, Richard; Peroutka, Zdeněk; Urban, Ondřej; Zich, Jan; CMS, Collaboration; TOTEM, CollaborationItem Odderon Exchange from Elastic Scattering Differences between pp and p¯p Data at 1.96 TeV and from pp Forward Scattering Measurements(American Physical Society, 2021) Abazov, V. M.; Georgiev, Vjačeslav; Hammerbauer, Jiří; Linhart, Richard; Peroutka, Zdeněk; Urban, Ondřej; Vavroch, Ondřej; Zich, Jan; D0, Collaboration; TOTEM, CollaborationItem Characterisation of the dip-bump structure observed in proton–proton elastic scattering at s√ = 8 TeV(Springer, 2022) Antchev, G.; Aspell, P.; Atanassov, I.; Avati, V.; Baechler, J.; Barrera, C.Baldenegro; Berardi, V.; Berretti, M.; Borchsh, V.; Bossini, E.; Bottigli, U.; Bozzo, M.; Burkhardt, H.; Cafagna, F.S.; Catanesi, M.G.; Csanád, M.; Csörgö, T.; Deile, M.; De Leonardis, F.; Doubek, M.; Druzhkin, D.; Eggert, K.; Eremin, V.; Ferro, F.; Fiergolski, A.; Forthomme, L.; Garcia, F.; Georgiev, Vjačeslav; Giani, S.; Grzanka, L.; Hammerbauer, Jiří; Isidori, T.; Ivanchenko, V.; Janda, Martin; Karev, A.; Kašpar, J.; Kaynak, B.; Kopal, J.; Kundrát, V.; Lami, S.; Latino, G.; Linhart, Richard; Lindsey, C.; Lokajíček, M.V.; Losurdo, L.; Lucas Rodríguez, F.; Macrí, M.; Malawski, M.; Minafra, N.; Minutoli, S.; Naaranoja, T.; Nemes, F.; Niewiadomski, H.; Novák, T.; Oliveri, E.; Oljemark, F.; Oriunno, M.; Österberg, K.; Palazzi, P.; Passaro, V.; Peroutka, Zdeněk; Procházka, J.; Quinto, M.; Radermacher, E.; Radicioni, E.; Ravotti, F.; Robutti, E.; Royon, C.; Ruggiero, G.; Saarikko, H.; Samoylenko, V.D.; Scribano, A.; Široký, Jan; Smajek, J.; Snoeys, W.; Stefanovitch, R.; Sziklai, J.; Taylor, C.; Tcherniaev, E.; Turini, N.; Urban, Ondřej; Vacek, V.; Vavroch, Ondřej; Welti, J.; Williams, J.; Zich, Jan; Zielinski, K.
