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2021 22nd International Vacuum Electronics Conference (IVEC)最新文献

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Design and Fabrication of 850GHz Defect Photonic Crystal Waveguide Slow Wave Structure 850GHz缺陷光子晶体波导慢波结构的设计与制造
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722538
Yang Xie, Ningfeng Bai, Xiaohan Sun, P. Pan, J. Cai, Jinjun Feng
{"title":"Design and Fabrication of 850GHz Defect Photonic Crystal Waveguide Slow Wave Structure","authors":"Yang Xie, Ningfeng Bai, Xiaohan Sun, P. Pan, J. Cai, Jinjun Feng","doi":"10.1109/IVEC51707.2021.9722538","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722538","url":null,"abstract":"A defect photonic crystal waveguide (DPCW) slow wave structure (SWS) for wide band operation at 850GHz is proposed in this paper. The DPCW SWS is simplified to 3 transverse periods for the trade-off between processing difficulties and the ideal performance. Small signal simulation results show that 0.7W output power is obtained with 18.4kV beam voltage, 10mA beam current and 5mW input power. The prototypes for cold-test are fabricated using CNC precision milling and laser ablation technologies.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117045535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research Progress of Pressed Sc2O3 Doped Y-Gd-Hf-O Cathode 加压Sc2O3掺杂Y-Gd-Hf-O阴极的研究进展
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722459
Xingqi Wang, Xiaoxia Wang, Jirun Luo, Yun Li
{"title":"Research Progress of Pressed Sc2O3 Doped Y-Gd-Hf-O Cathode","authors":"Xingqi Wang, Xiaoxia Wang, Jirun Luo, Yun Li","doi":"10.1109/IVEC51707.2021.9722459","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722459","url":null,"abstract":"In order to enhance the scandium oxide doped Y-Gd-Hf-O cathodes anti-electron bombardment ability and prolong its lifetime in continuous wave magnetrons, the scandia doped cathode emitters were prepared by a new pressing technique combined with high temperature sintering in hydrogen atmosphere. Surface microstructure and thermionic emission performance of the cathodes were investigated in this abstract.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129606687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Frequency Tuning Characteristic of a Sub-THz Quasi-Optical Gyrotron Cavity by Mirror Separation Adjusting 亚太赫兹准光回旋管腔镜分离调节的频率调谐特性
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722480
Xiaotong Guan, W. Fu, Dun Lu, Tongbin Yang, Yang Yan
{"title":"Frequency Tuning Characteristic of a Sub-THz Quasi-Optical Gyrotron Cavity by Mirror Separation Adjusting","authors":"Xiaotong Guan, W. Fu, Dun Lu, Tongbin Yang, Yang Yan","doi":"10.1109/IVEC51707.2021.9722480","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722480","url":null,"abstract":"A high-power frequency-tunable sub-THz quasi-optical gyrotron cavity based on confocal waveguide is designed in this paper. The frequency tuning characteristic of the cavity has been investigated by Particle-In-Cell (PIC) simulation. Results predict that the oscillation frequency of the proposed quasi-optical cavity could be tuned in a range of 17.1 GHz around 0.22 THz by only adjusting the mirror separation distance. Moreover, combining the adjustments of mirror separation and magnetic field, a smoothly continuous frequency tuning band with an extraordinarily broad bandwidth of 41.5 GHz can be obtained, corresponding to a relative bandwidth of 18.7% to the center frequency 0.22THz. Meanwhile the output power keeps no less than 20 kW during the hybrid adjustment. Quasi-optical gyrotron cavity performs a good frequency tunability and may be conducive for developing the high-power frequency-tunable THz gyrotron oscillators.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128652851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microwave CPA-Amplifier with Multi-Gigawatt Ultrashort Output Pulses 具有多吉瓦超短脉冲输出的微波cpa放大器
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722502
L. Yurovskiy, I. Zotova, N. Ginzburg, M. Vilkov, R. Rozental, S. Samsonov, E. Abubakirov
{"title":"Microwave CPA-Amplifier with Multi-Gigawatt Ultrashort Output Pulses","authors":"L. Yurovskiy, I. Zotova, N. Ginzburg, M. Vilkov, R. Rozental, S. Samsonov, E. Abubakirov","doi":"10.1109/IVEC51707.2021.9722502","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722502","url":null,"abstract":"The possibility of efficient amplification of ultrashort microwave superradiant pulses with use of Chirped Pulse Amplification (CPA) technique had been studied theoretically. This technique implies preliminary stretching of initial pulse, subsequent amplification of chirped pulse with reduced peak power and restoration of pulse original shape in compressor. According to calculations, considered CPA scheme comprising a relativistic Cherenkov amplifier and five-fold helically corrugated oversized waveguides as stretcher and compressor can amplify 30 GHz, 360 ps, 400 MW initial supperradiance pulse up to 8 GW. Thus, the peak power of amplified pulse can exceed power of used electron beam by factor of 4.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129081977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Wiener-Arrhenius-Model-Based Method for Life Prediction of TWT Cathode 基于wiener - arrhenius模型的行波管阴极寿命预测方法
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9721926
Xiaoning Wang, Xiaobao Su, Shiji Yu, Youwei Fang
{"title":"A Wiener-Arrhenius-Model-Based Method for Life Prediction of TWT Cathode","authors":"Xiaoning Wang, Xiaobao Su, Shiji Yu, Youwei Fang","doi":"10.1109/IVEC51707.2021.9721926","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9721926","url":null,"abstract":"In this paper, in order to estimate the life of TWT quickly, an accelerated degradation test (ADT) was carried out applying a short vacuum tube, and a life prediction method based on the Wiener-Arrhenius model is proposed considering individual variability among the tested samples. The validity of the proposed method is verified through comparison with the extrapolation result of curve fitting under normal operating condition, and it is concluded that the Wiener-Arrhenius-model-based method is more accurate and reliable.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123528896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
An IGBT Drive Circuit Controlled By Synchronous Signal Based On Magnetic Coupling Technology 基于磁耦合技术的同步信号控制IGBT驱动电路
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722408
Mengjun Wang, Chunguang Ma, Ying Zhang, Yuan Chen, Yong Luo
{"title":"An IGBT Drive Circuit Controlled By Synchronous Signal Based On Magnetic Coupling Technology","authors":"Mengjun Wang, Chunguang Ma, Ying Zhang, Yuan Chen, Yong Luo","doi":"10.1109/IVEC51707.2021.9722408","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722408","url":null,"abstract":"This paper describes an IGBT drive circuit based on a synchronous signal control based on magnetic coupling technology. The drive circuit integrates the advantages of magnetic coupling technology, and strengthens the controllability of this coupling method by improving the secondary loop. In this way, the volume of the high-voltage pulse generator can be more compact and more stable. Through experiments, the superiority of this method is confirmed.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"50 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116333191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Slow Wave Structure’ Internal Temperature Prediction Based on Experimental Data 基于实验数据的慢波结构内部温度预测
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722473
Xingqun Zhao, Chenghuan Shi
{"title":"Slow Wave Structure’ Internal Temperature Prediction Based on Experimental Data","authors":"Xingqun Zhao, Chenghuan Shi","doi":"10.1109/IVEC51707.2021.9722473","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722473","url":null,"abstract":"At present, there are many researches on the thermal characteristics of traveling wave tubes (TWT), but few on the measurement of its internal temperature are involved because of the difficulty to monitor. The internal temperature, however, is closely related with the output power, reliability and stability of the tube. In this study, a simplified slow wave structure model was built and an RBF neural network was used to predict the internal temperature. The network was trained using the simulation temperature data from the corresponding ANSYS model. To verify the feasibility of the network, the external temperature of the simplified TWT model measured in the experiment were input into the model, and the error between the predicted and actual internal temperature was very small.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121677859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A 1.3 GHz 100 kW Ultra-high Efficiency Klystron 1.3 GHz 100kw超高效率速调管
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722450
Michael Read, Thomas Habermann, Aaron Jensen, D. Marsden, T. Bui, G. Collins, R. Ives
{"title":"A 1.3 GHz 100 kW Ultra-high Efficiency Klystron","authors":"Michael Read, Thomas Habermann, Aaron Jensen, D. Marsden, T. Bui, G. Collins, R. Ives","doi":"10.1109/IVEC51707.2021.9722450","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722450","url":null,"abstract":"Calabazas Creek Research, Inc. is developing a high efficiency, 1.3 GHz, 100 kW klystron for driving accelerators. A simulated efficiency of 79% was realized, and the device is being fabricated. Details of the design and available test results will be presented.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"176 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121782932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Parallel implementation of space charge force calculation in SUNRAY-1D using MPI 基于MPI的SUNRAY-1D空间电荷力计算并行实现
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722404
A. Latha, V. Gahlaut, V. Srivastava, S. Ghosh
{"title":"Parallel implementation of space charge force calculation in SUNRAY-1D using MPI","authors":"A. Latha, V. Gahlaut, V. Srivastava, S. Ghosh","doi":"10.1109/IVEC51707.2021.9722404","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722404","url":null,"abstract":"SUNRAY-1D is a one-dimensional large signal code for analyzing the beam-wave interaction in helix traveling wave tubes (TWTs). In order to improve the performance of SUNRAY-1D, parallelization of few of its modules has been initiated. Parallel implementation of space charge force module using MPI (message passing interface) has been successful. Improvements, in terms of increased accuracy and reduced computational time, have been the key benefits achieved.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121951006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Design of a Transverse Magnetic Field Scanning System with 12 Elliptical Coils for Gyrotron Oscillator Collector 回旋管振荡集电极12椭圆线圈横向磁场扫描系统的设计
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722479
Han Li, Yu Fan, Chen Yang, Jirun Luo
{"title":"A Design of a Transverse Magnetic Field Scanning System with 12 Elliptical Coils for Gyrotron Oscillator Collector","authors":"Han Li, Yu Fan, Chen Yang, Jirun Luo","doi":"10.1109/IVEC51707.2021.9722479","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722479","url":null,"abstract":"In this abstract, a magnetic field scanning system, composed of 12 transverse elliptical coils and 2 vertical DC coils, has been designed to reduce the peak value and average power of the electron beam on the collector surface. According to the design parameters of the collector of the TE28,8 mode, 140 GHz, 1 MW output power level gyrotron oscillator, the designed results for this scanning system shows that the peak and average power density of the electron beam on the collector surface are not more than 298.66 W/cm2 and 190.94 W/cm2, while scanning length reaches 490 mm, which can effectively relieve the pressure of power dissipation and cooling of the collector.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128195034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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