Published 12 issues per year
ISSN Print: 0040-2508
ISSN Online: 1943-6009
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SIMULATION AND EXPERIMENTAL RESEARCH ON CW KLYNOTRON IN FREQUENCY RANGE 125−135 GHZ
ABSTRACT
Compact electromagnetic radiation sources are an integral and important part of many modern applications, for which it is crucial to provide a continuous-wave (CW) operation with the output power of several watts or higher in millimeter and sub-millimeter ranges, for example, to enhance the sensitivity of DNP NMR spectroscopy. We used the results of performance tests of 2mm CW klynotrons to simulate the parameters of a CW klynotron with the central operating frequency of 130 GHz. On analyzing the performance characteristics of the sources the frequency dependence of the space charge, Pierce parameter and the system electrical length was defined. The obtained parameters were used to calculate the slow-wave structure (grating) and to simulate the operation parameters of klynotron tubes incorporating such structures. The simulation results served as a basis for designing klynotrons with homogeneous and four-stage slow-wave structures. The experimental part of the study was focused on a source with a homogeneous slow-wave structure which generated oscillations within the range 125−135 GHz. The dependences between the starting current, beam current and required focusing magnetic field were defined. The experimental test showed a good agreement between the empirical data and simulation results. The suggested method can be applied for simulating CW klynotrons in both millimeter and sub-millimeter ranges.
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Kovshov Yu., Ponomarenko S., Kishko S., Vlasenko S., Lihachev A., Lukash A., Danik A., Khutoryan E. M., Kuleshov A. N., 0.1–0.4 THz clinotron table-top modules for spectroscopy applications, 2017 IEEE International Young Scientists Forum on Applied Physics and Engineering (YSF), 2017. Crossref
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Likhachev A., Kishko S., Kovshov Y., Danik A., Ponomarenko S., Khutoryan E., Kuleshov A., Tischenko A., Zavertanniy V., Zabrodskiy A., Terekhin S., Kudinova T., Kirichenko L., Galushko L., Klescheva Y., Bezrodnaya G., Vlasenko S., Development of compact generator complexes based on terahertz clinotrons at O. Ya. Usikov IRE NAS of Ukraine, RADIOFIZIKA I ELEKTRONIKA, 24, 2, 2019. Crossref