Zobrazeno 1 - 10
of 143
pro vyhledávání: '"Olgierd Dumbrajs"'
Autor:
Kacper Nowak, Olgierd Dumbrajs
Publikováno v:
Journal of Telecommunications and Information Technology, Iss 1 (2021)
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 sof
Externí odkaz:
https://doaj.org/article/cb8a2c485d63427d8f123840a71b96cf
Publikováno v:
Mathematical Modelling and Analysis, Vol 24, Iss 4 (2019)
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 m
Externí odkaz:
https://doaj.org/article/521e6a906c7d454582573756990a44ae
Autor:
Xianfei Chen, Gregory S. Nusinovich, Olgierd Dumbrajs, Houxiu Xiao, Xiaotao Han, Donghui Xia, Tao Peng
Publikováno v:
IEEE Transactions on Electron Devices. 69:785-791
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e17135dd71e2b2373cfd2fe84d4b1c1
https://doi.org/10.1109/ted.2021.3137760
https://doi.org/10.1109/ted.2021.3137760
Publikováno v:
IEEE Transactions on Plasma Science. 48:3007-3016
The key point of gyrotron design is the analysis of the radio frequency (RF) behavior in gyrotron resonators. This article proposes a comprehensive, user-friendly and effective gyrotron design toolbox (GYROCOMPU) based on the MATLAB platform. GYROCOM
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42253f8ddd916b2398d109f27ed22e85
https://doi.org/10.1109/tps.2020.3013299
https://doi.org/10.1109/tps.2020.3013299
Publikováno v:
Journal of Infrared, Millimeter, and Terahertz Waves. 41:141-151
The main trends in gyrotron development are escalation of the radiated power and increasing the frequency of coherent radiation. For both trends, it is beneficial to develop gyrotrons with wide emitters because this allows one to use cryomagnets with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2fd65c0f4558cb5c31d52dbab4b0efc
https://doi.org/10.1007/s10762-019-00646-5
https://doi.org/10.1007/s10762-019-00646-5
Publikováno v:
IEEE Transactions on Plasma Science. 47:3141-3147
This paper proposes an analyzing method for the nonlinear theory of gyrotrons based on the functional analysis theory. This method is computationally efficient and highly practical, and the results have good accuracy as that of the self-consistent th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1acd44e4634de0b2fcf8c1a25f2f089
https://doi.org/10.1109/tps.2019.2917040
https://doi.org/10.1109/tps.2019.2917040
Publikováno v:
2020 IEEE 21st International Conference on Vacuum Electronics (IVEC).
The main trends in gyrotron development are escalation of the radiated power and increasing the frequency of coherent radiation. For both trends it is beneficial to develop gyrotrons with wide emitters because this allows one to use cryomagnets with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c6b7aafce107fd1fdce8cd918dc0d3d
https://doi.org/10.1109/ivec45766.2020.9520621
https://doi.org/10.1109/ivec45766.2020.9520621
Publikováno v:
Journal of Infrared, Millimeter, and Terahertz Waves. 38:824-837
Effect of delayed reflection on operation of a second-harmonic terahertz (THz)-band gyrotron is studied. Theoretical analyses, numerical calculations, and experimental observations for the 0.394-THz Fukui University (FU) and continuous wave (CW) IIB
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4dcd96c9475542ee80a4a7dabc11684
https://doi.org/10.1007/s10762-017-0378-x
https://doi.org/10.1007/s10762-017-0378-x
Autor:
M. Yu. Glyavin, Irina V. Zotova, A. E. Fedotov, Andrey P. Fokin, Alexander I. Tsvetkov, Anton S. Sedov, Olgierd Dumbrajs, I. V. Bandurkin, Toshitaka Idehara, Vladimir N. Manuilov
Publikováno v:
2019 PhotonIcs & Electromagnetics Research Symposium - Spring (PIERS-Spring).
The paper presents recent results on the multi-beam gyrotrons operating at cyclotron harmonics in terahertz frequency range. The theoretical and experimental investigation of second harmonic 0.78 THz gyrotron includes comparison of generating and abs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d522147ef0d4abb1cff1fafdfc931c5
https://doi.org/10.1109/piers-spring46901.2019.9017415
https://doi.org/10.1109/piers-spring46901.2019.9017415
Autor:
Gregory S. Nusinovich, Olgierd Dumbrajs, Tonghai Ding, Xianfei Chen, Luwei Liu, Xiaotao Han, Houxiu Xiao, Donghui Xia, Tao Peng
Publikováno v:
Physics of Plasmas. 28:013110
In gyrotrons operating in high-order modes, during the startup process, the shadowing of the operating mode by two sidebands may take place. By “shadowing,” we mean the situation when, during the voltage rise, one of the parasitic modes is excite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d3a3338091d8d0d8f0cd9a95fde2b13
https://doi.org/10.1063/5.0036054
https://doi.org/10.1063/5.0036054