Research and designing of the catcher for the electro-vacuum frequency multiplier of the sub-millimetre range of waves

• Published in: Radiofizika i èlektronika Vol. 24; no. 3; pp. 45 - 60
• Main Author: M.V. Mil’cho
• Format: Journal Article
• Language: English
• Published: Akademperiodyka 01.09.2019
• Subjects: bunching; electronic; frequency multiplier; klynotron; numeral account
• ISSN: 1028-821X; 2415-3400
• DOI: 10.15407/rej2019.03.045

Subject and purpose. Presently, there is a problem of creation of simple in exploitation generators for a sub-millimeter range, especially in his shot-wave part. Electro-vacuum generators of type BWT and klynotron are work out for long wave part of sub-millimeter range. Difficulties at designing are increase with shortening of wave length. The sizes of the slow-wave structures diminish, requirement to the density of current of electronic bunches and to quality of their focusing, increase. The use electro-vacuum multipliers of frequency, can weaken these requirements considerably. The numeral research of the catcher for the electro-vacuum frequency multiplier, is described in this paper for sub millimeter range. The aim of these researches are an estimation of attainable output power of frequency multipliers and search of optimal parameters for their realization in sub-millimeter range of waves. Methods and methodology. For a calculation catcher efficiency, the analysis of three-dimension motion of electronic bunch in set field of the slowing wave system is conducted. For the numeral integration of the electron motion equation, the universal program “KLYNOTRON” is used. This program was worked out by us before for BWT and klynotron research. In this program many parameters of the real task are take into account. For description of spatial distribution longitudinal and transversal constituents of electric-field tension, the exact analytical method of conformal mapping is used. Thus, all spatial harmonics of the field are taken into account at once in analytical expressions and the field singularity is exactly described near-by the ribs of metallic elements. Results. A numeral study of catcher parameter influence is undertaken on the output power of multiplier. On the ranges of waves 0,5 mm and 0,3 mm the regime and possible for realization catcher structural parameters are certain Conclusions. Undertaken a study showed that at existent technological possibilities really to create the multipliers of frequency in the range of waves at 0.3…0.5 mm with output power at order ten millwatt. A necessary condition for creation of such devices is optimization of parameters of buncher of electronic clots in the multiplier of frequency.