{"title":"SUNRAY-2.5 D code for multi-signal large-signal analysis of a complete helix TWT","authors":"V. Srivastava","doi":"10.1109/IVEC.2011.5746996","DOIUrl":null,"url":null,"abstract":"Accurate and fast SUNRAY-2.5D code has been developed for multi-signal large signal analysis of a complete helix TWT. Ring model of electron beam was used and relativistic equations of motion were solved with variable focusing field, circuit loss and pitch profiles. Improved expressions of the circuit field and induced voltages were developed. Complete RF output and beam performance including higher harmonics, inter-modulation components, beam interception were simulated. It is fast and accurate and has been validated with experimental results of several broadband and high efficiency TWTs. Agreement for saturated output power is achieved within 0.5dB and for saturated gain within 2dB. High efficiency TWTs at different frequency bands have been designed using this code. Spent beam data generated by the code has been used for the design of multi-stage collectors, accurately for space TWTs.","PeriodicalId":106174,"journal":{"name":"2011 IEEE International Vacuum Electronics Conference (IVEC)","volume":"197 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2011-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 IEEE International Vacuum Electronics Conference (IVEC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IVEC.2011.5746996","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
Accurate and fast SUNRAY-2.5D code has been developed for multi-signal large signal analysis of a complete helix TWT. Ring model of electron beam was used and relativistic equations of motion were solved with variable focusing field, circuit loss and pitch profiles. Improved expressions of the circuit field and induced voltages were developed. Complete RF output and beam performance including higher harmonics, inter-modulation components, beam interception were simulated. It is fast and accurate and has been validated with experimental results of several broadband and high efficiency TWTs. Agreement for saturated output power is achieved within 0.5dB and for saturated gain within 2dB. High efficiency TWTs at different frequency bands have been designed using this code. Spent beam data generated by the code has been used for the design of multi-stage collectors, accurately for space TWTs.
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