Optimization of gyrotron resonator’s dimensions

This paper explains the procedure of determining the initial dimensions of a gyrotron resonator. In particular, the paper discusses which geometrical parameters impact the wave properties of the resonator. The solution is implemented using Matlab software and estimations are performed with the use of the SMath Studio spreadsheet. © 2021 National Institute of Telecommunications. All rights reserved.Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART2

Optimization of Gyrotron Resonator’s Dimensions, Journal of Telecommunications and Information Technology, 2021, nr 1

This paper explains the procedure of determining the initial dimensions of a gyrotron resonator. In particular, the paper discusses which geometrical parameters impact the wave properties of the resonator. The solution is implemented using Matlab software and estimations are performed with the use of the SMath Studio spreadsheet

Review of Experimental Verification Methods of Gyrotron Quasi-optical Mode Converters, Journal of Telecommunications and Information Technology, 2020, nr 3

This survey presents a review of experimental methods relied upon while implementing gyrotron higher mode generation techniques and performing near electromagnetic field measurements in launcher and quasi-optical mode converters. In particular, the paper focuses on low power (cold) testing of gyrotron quasi-optical mode converters outside of the gyrotron, without the presence of high electromagnetic power and electron beam

Vlasov Launcher Diagrammatic Design Using the RT Method, Journal of Telecommunications and Information Technology, 2021, nr 2

In this paper, a simple and fast method relied upon for designing a Vlasov launcher with a helical cut is proposed. The method is based on graphic interpretation of analytical relationships that link wave parameters (EM field mode) to the launcher’s geometrical dimensions. Using the ray tracing method, a simplified graphic analysis may be carried out. The results obtained are not significantly different from those of rigorous full-wave analyzes. The family of normalized curves that is created in the process greatly facilitates the stage of optimizing the geometrical parameters of the Vlasov launche

Geoproduct potential analysis based on the example of the GEOsfera Ecological and Geological Education Center in Jaworzno

At the time of discovering and exposing the scientific and educational potential of areas where mineral resources were exploited in the past, they have become a significant element in tourism elements. In the presented paper, the potential of the GEOsfera Ecological and Geological Education Centre in Jaworzno as a geoproduct was analysed. In the first part of the study, based on the published works and consultations with experts, the “geoproduct” was defined. Then the area, where the GEOsphere is located, was characterized. Its geology, the natural world, the way of land development and the promotion of geo-attractions located in this area are described. In the next stage, an analysis of the opinions of users regarding their perception of the GEOsphere was carried out. For this purpose, evaluations posted on social media and the collected survey results were used. As shown by the results, the majority of users of the GEOsfera are residents of Jaworzno – 63% of the respondents. The importance of the GEOsphere as an educational centre was indicated by 22% of visitors. About 5% of the respondents mentioned learning and obtaining information from the descriptions placed next to the exhibits in the centre. 93% of respondents recognised the graduation tower as the greatest attraction of the GEOsphere. Over 92% of people noticed the recreational role of the GEOsphere. 81% of users declared that they were satisfied with their visit to the GEOsphere. More than half of the respondents (56%) visited the GEOsfera with their family. A significant part of respondents (42%), pointed to the role of environmental protection, which is extremely important from the point of view of geoproducts’ design. The respondents also indicated that the GEOsphere has numerous geological, natural and educational functions and protects and promotes the geological heritage of the region

The gyrotron startup scenario in the single mode time dependent approach

The paper explains how to solve the Gyrotron equation system in the Single Mode Time Dependent Approach. In particular, we point out problems encountered when solving these well-known equations. The starting current estimation approach a using time model is suggested. The solution has been implemented in the Matlab code, which is attached to the article

Geoproduct potential analysis based on the example of the GEOsfera Ecological and Geological Education Center in Jaworzno

At the time of discovering and exposing the scientific and educational potential of areas where mineral resources were exploited in the past, they have become a significant element in tourism elements. In the presented paper, the potential of the GEOsfera Ecological and Geological Education Centre in Jaworzno as a geoproduct was analysed. In the first part of the study, based on the published works and consultations with experts, the “geoproduct” was defined. Then the area, where the GEOsphere is located, was characterized. Its geology, the natural world, the way of land development and the promotion of geo-attractions located in this area are described. In the next stage, an analysis of the opinions of users regarding their perception of the GEOsphere was carried out. For this purpose, evaluations posted on social media and the collected survey results were used. As shown by the results, the majority of users of the GEOsfera are residents of Jaworzno – 63% of the respondents. The importance of the GEOsphere as an educational centre was indicated by 22% of visitors. About 5% of the respondents mentioned learning and obtaining information from the descriptions placed next to the exhibits in the centre. 93% of respondents recognised the graduation tower as the greatest attraction of the GEOsphere. Over 92% of people noticed the recreational role of the GEOsphere. 81% of users declared that they were satisfied with their visit to the GEOsphere. More than half of the respondents (56%) visited the GEOsfera with their family. A significant part of respondents (42%), pointed to the role of environmental protection, which is extremely important from the point of view of geoproducts’ design. The respondents also indicated that the GEOsphere has numerous geological, natural and educational functions and protects and promotes the geological heritage of the region. W dobie odkrywania i eksponowania potencjału naukowego i edukacyjnego terenów, na których w przeszłości prowadzono eksploatację surowców, stają się one znaczącymi obiektami turystycznymi. W prezentowanej pracy dokonano analizy potencjału Centrum Edukacji Ekologiczno-Geologicznej GEOsfera w Jaworznie, zlokalizowanego na terenie wyrobiska surowców skalnych, jako geoproduktu. W pierwszej części opracowania, opierając się na dostępnych pracach publikowanych i konsultacjach z ekspertami, zdefiniowano „geoprodukt” oraz określono kryteria, jakie powinien spełniać. Następnie opisano teren, na którym zlokalizowana jest GEOsfera, uwzględniając geologię, elementy przyrody ożywionej oraz sposób zagospodarowania terenu i promowania geoatrakcji, które się tam znajdują. Na kolejnym etapie przeprowadzono analizę opinii użytkowników w zakresie postrzegania przez nich GEOsfery. Do tego celu wykorzystano oceny zamieszczone w mediach społecznościowych i zgromadzone wyniki badań ankietowych. Wykazały one, że większość spośród badanych użytkowników GEOsfery to mieszkańcy Jaworzna, którzy stanowili 63% ankietowanych. Znaczenie GEOsfery jako istotnego ośrodka edukacyjnego wskazało 22% odwiedzających. Około 5% pytanych doceniło uczenie się i pozyskiwanie informacji z opisów umieszczonych na tablicach obok eksponatów na terenie ośrodka. Jako największą atrakcję terenu GEOsfery 93% ankietowanych wskazało tężnię solankową. Ponad 92% respondentów dostrzegło rekreacyjną rolę GEOsfery i dogodne warunki do aktywnego spędzania czasu. 81% badanych zadeklarowało zadowolenie z wizyty. Ponad połowa respondentów (56%) odwiedziła GEOsferę z rodziną. Znaczna część ankietowanych (42%) zwróciła uwagę na znaczenie ochrony środowiska w funkcjonowaniu GEOsfery, co jest niezwykle ważną informacją przydatną podczas projektowania geoproduktu. Użytkownicy, którzy wzięli udział w badaniu, wskazali również, że GEOsfera ma liczne walory geologiczne, przyrodnicze i edukacyjne oraz chroni i promuje dziedzictwo geologiczne regionu

The Microwave Sources for EPR Spectroscopy, Journal of Telecommunications and Information Technology, 2017, nr 2

Rapid development of many scientific and technical disciplines, especially in material science and material engineering increases a demand for quick, accurate and cheap techniques of materials investigations. The EPR spectroscopy meets these requirements and it is used in many fields of science including biology, chemistry and physics. For proper work, the EPR spectrometer needs a microwave source, which are reviewed in this paper. Vacuum tubes as well as semiconductor generators are presented such as magnetron, klystron, traveling wave tube, backward wave oscillator, orotron, gyrotron, Gunn and IMPATT diodes. In this paper main advantages of gyrotron usage, such as stability and an increased spectral resolution in application to EPR spectroscopy is discussed. The most promising and reliable microwave source is suggested

Report of the Topical Group on Top quark physics and heavy flavor production for Snowmass 2021

This report summarizes the work of the Energy Frontier Topical Group on EW Physics: Heavy flavor and top quark physics (EF03) of the 2021 Community Summer Study (Snowmass). It aims to highlight the physics potential of top-quark studies and heavy-flavor production processes (bottom and charm) at the HL-LHC and possible future hadron and lepton colliders and running scenarios

Optimising top-quark threshold scan at CLIC using genetic algorithm

One of the main goals of the future e+e− colliders is to measure the top-quark mass and width in a scan of the pair production threshold. Yet, the shape of the threshold cross section depends also on other model parameters as the top Yukawa coupling and the strong coupling constant. In this thesis, the study of the expected precision of the top-quark mass determination from the threshold scan at CLIC is presented. The most general fit approach is used with all relevant model parameters and expected constraints from ear- lier measurements taken into account. It is demonstrated that the top-quark mass can be extracted with statistical precision of the order of 30 to 40 MeV and additional improve- ment is possible if the running scenario is optimized. With the optimisation procedure based on the genetic algorithm the statistical uncertainty of the mass measurement can be reduced by about 25%