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

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Dual-frequency 19 / 38 GHz MW Gyrotron Design for Spherical Tokamak 球形托卡马克双频19 / 38 GHz兆瓦回旋加速器设计
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722519
A. Fedotov, I. Bandurkin, V. Manuilov, E. Semenov, I. Zotova, M. Glyavin
{"title":"Dual-frequency 19 / 38 GHz MW Gyrotron Design for Spherical Tokamak","authors":"A. Fedotov, I. Bandurkin, V. Manuilov, E. Semenov, I. Zotova, M. Glyavin","doi":"10.1109/IVEC51707.2021.9722519","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722519","url":null,"abstract":"In spherical tokamaks, the magnetic field is strongly non-uniform inside the plasma, so the electron-cyclotron resonance heating (ECRH) condition is fulfilled only in small volume for fixed microwave frequency. Therefore, for spherical tokamak facilities the plasma heating and confinement regime depends on the position of ECRH area. For this purpose, the gyrotron capable for CW operation with output power of 1 MW at two different frequencies of 19 GHz and 38 GHz is designed.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"19 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":"115365096","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
The Design and Optimization for a V-Band Magnetron Injection Gun v波段磁控管注射枪的设计与优化
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722497
Yun Liu, Wei Jiang, Chaoxuan Lu, Jianxun Wang, Yong Luo
{"title":"The Design and Optimization for a V-Band Magnetron Injection Gun","authors":"Yun Liu, Wei Jiang, Chaoxuan Lu, Jianxun Wang, Yong Luo","doi":"10.1109/IVEC51707.2021.9722497","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722497","url":null,"abstract":"Gyro-travelling-wave-tubes (Gyro-TWT) is a kind of high-power amplifier of vacuum electron device. Magnetron Injection Guns (MIG) is an essential component of Gyro-travelling-wave-tubes. In this paper, a single anode MIG is designed and optimized with genetic algorithm, which electron beam with a pitch ratio of 1.27 and low transverse velocity spread of 1.97% is obtained. The influence of the mismatching relationship between electric and magnetic field on velocity spread is analyzed.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"18 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":"115727897","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
Development of E-Band Continuous Wave Folded Waveguide TWT e波段连续波折叠波导行波管的研制
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722528
Fei Li, Liu Xiao, Jun He, Yuhui Sun, Hong-xia Yi, Xin-wen Shang, T. Ma, Mingguang Huang
{"title":"Development of E-Band Continuous Wave Folded Waveguide TWT","authors":"Fei Li, Liu Xiao, Jun He, Yuhui Sun, Hong-xia Yi, Xin-wen Shang, T. Ma, Mingguang Huang","doi":"10.1109/IVEC51707.2021.9722528","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722528","url":null,"abstract":"An E-band 70W continuous wave folded waveguide TWT (CW FWTWT) was designed and fabricated. The measured results showed that beam transmission was over 98% at dc and better than 97% at the highest peak RF power. Measured output powers are higher than 76.7W with saturated gains higher than 31.1dB within frequency range of 81-86GHz. This TWT adopts single depressed collector and the total efficiencies are higher than 26.7% within 81-86GHz.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"143 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":"121145521","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
Ultra-High Frequency GaN Nanoscale Vacuum Electronic Devices 超高频氮化镓纳米真空电子器件
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722483
Yazhou Wei, Mo Li, Yong Luo, Jian Zhang
{"title":"Ultra-High Frequency GaN Nanoscale Vacuum Electronic Devices","authors":"Yazhou Wei, Mo Li, Yong Luo, Jian Zhang","doi":"10.1109/IVEC51707.2021.9722483","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722483","url":null,"abstract":"The performances of the GaN nanoscale vacuum electronic devices (NVEDs) were investigated in this paper by theoretical simulation, considering the effects of the device structures. By choosing a proper air channel and aspect ratio, a GaN NVED with a low turn-on voltage and a strong output current can be achieved, showing good agreements with the experiments. The GaN NVED can provide high frequency output in THz band, due to the free transport of electrons in the very small air gap.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"66 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":"121267963","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
The Hot Test of A High Average Power Broadband Ka-Band Sheet Beam Traveling-wave Tube 高平均功率宽带ka波段片束行波管热测试
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722412
Jianxun Wang, Yixin Wan, Xinjie Li, Qiang-an Liu, Guo Li, Hao Li, Zewei Wu, Yong Luo
{"title":"The Hot Test of A High Average Power Broadband Ka-Band Sheet Beam Traveling-wave Tube","authors":"Jianxun Wang, Yixin Wan, Xinjie Li, Qiang-an Liu, Guo Li, Hao Li, Zewei Wu, Yong Luo","doi":"10.1109/IVEC51707.2021.9722412","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722412","url":null,"abstract":"Progress on a more than 2 kW average power and 50% working duty broadband Ka-band sheet beam traveling-wave tube (SB- TWT) is reported for the first time. Overall device has been designed, fabricated, and tested in UESTC. The TWT employs a periodic cusp magnet (PCM) focusing system allowing above 95% transmission and compact package. The unsaturated measured peak output power exceeds 4 kW with over 50% duty corresponding 26.7 dB gain and 31.9% efficiency at 28 GHz with single-stage collector depression. The 3-dB bandwidth is 7 GHz from 26 GHz to 33 GHz under the unsaturated driven. The details of the experiment are discussed.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"26 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":"127184422","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
Simulation and Design of 300 GHz CW Clinotron Oscillator on Hybrid Surface-Volume Modes 表面-体积混合模式下300 GHz连续波回旋振荡器的仿真与设计
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722445
S. Ponomarenko, A. Likhachev, V. Stoyanova, Y. Tatematsu, S. Mitsudo, M. Tani, E. Khutoryan, A. Kuleshov, K. Lukin
{"title":"Simulation and Design of 300 GHz CW Clinotron Oscillator on Hybrid Surface-Volume Modes","authors":"S. Ponomarenko, A. Likhachev, V. Stoyanova, Y. Tatematsu, S. Mitsudo, M. Tani, E. Khutoryan, A. Kuleshov, K. Lukin","doi":"10.1109/IVEC51707.2021.9722445","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722445","url":null,"abstract":"The results of the research and design of a new model of clinotron with the non-uniform grating structure. The tube is designed to operate at the several regimes those are promising for efficient excitation of the THz waves. The regime of the hybrid surface-volume mode is considered numerically. The design of the clinotron contains two power outputs: the backward wave (BW) output and the space wave (SW) output. The simulation results demonstrate double magnification of the output power at the SW output compared to the BW output. The experimental prototype of the clinotron has been designed and manufactured according to the simulation results.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"48 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":"125071552","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
Space Power Combiner Based on Quasi-Optical Phase-Correcting Mirrors 基于准光学相位校正镜的空间功率合成器
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722530
Minxing Wang, Zewei Wu, Ran Zhang, Haojun Yuan, Youlei Pu, Yong Luo
{"title":"Space Power Combiner Based on Quasi-Optical Phase-Correcting Mirrors","authors":"Minxing Wang, Zewei Wu, Ran Zhang, Haojun Yuan, Youlei Pu, Yong Luo","doi":"10.1109/IVEC51707.2021.9722530","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722530","url":null,"abstract":"This article proposes a space power combiner based on the quasi-optical phase-correcting technology. The combiner consists of a couple of irregular-shaped reflective mirrors, by which the wave generated from waveguide horns can be modulated into a Gaussian-like beam to achieve the space power combining. The deformation of the mirrors is calculated using a modified Katsenelenbaum–Semenov algorithm. Performance of the space power combiner evaluated by simulation, and the results indicate that the power combiner features high efficiency and broad bandwidth.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"182 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":"116140414","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 on Improved High Efficiency Optimization Method for SBEIO 改进的SBEIO高效优化方法研究
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722514
Jiahao Gao, Jianxun Wang, Yixin Wan, Yangfan Wang, Guo Liu, Yong Luo
{"title":"Research on Improved High Efficiency Optimization Method for SBEIO","authors":"Jiahao Gao, Jianxun Wang, Yixin Wan, Yangfan Wang, Guo Liu, Yong Luo","doi":"10.1109/IVEC51707.2021.9722514","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722514","url":null,"abstract":"This paper improves the design method for optimizing the sheet beam extended interaction oscillator (SBEIO) based on the simulated annealing algorithm. This optimization method combines the correlation analysis of the SBEIO electric field distribution with an improved non-linear calculation program to optimize the 9-gaps SBEIO. By performing a correlation analysis on the electric field distribution trend of the extended interaction oscillator and finding the constraint relationship between the electric field amplitude coefficients, the optimization step can be simplified. And improved the MATLAB program for non-linear theoretical calculation. The efficiency of 64 electronic calculations only took 13.68s, which is 10 times higher than before. At the same time, after the output power curve has stabilized, the fluctuation is only 0.128%. The efficiency from the non-linear calculation program are up to 19.03%.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"30 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":"122390982","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
Design of a Tunable 400-GHz Second-Harmonic Gyrotron with Selective Grooves 可调谐400-GHz选择性沟槽二次谐波回旋管设计
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722402
I. Bandurkin, A. Fedotov, A. Fokin, M. Fukunari, M. Glyavin, I. Osharin, A. Savilov, Y. Tatematsu
{"title":"Design of a Tunable 400-GHz Second-Harmonic Gyrotron with Selective Grooves","authors":"I. Bandurkin, A. Fedotov, A. Fokin, M. Fukunari, M. Glyavin, I. Osharin, A. Savilov, Y. Tatematsu","doi":"10.1109/IVEC51707.2021.9722402","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722402","url":null,"abstract":"A design of a cryomagnet-based second-harmonic gyrotron is proposed, in which a special profile of an axisymmet-ric cavity is used for efficient discrimination of the fundamental-harmonic mode in a wide range of operating magnetic fields and for providing a wide band of the frequency tuning when operating in several axial modes. According to simulations, for the beam voltage of 15 kV it is possible to achieve a frequency tuning of up to 0.3% when operating at several axial modes near the frequency of 400 GHz with an output power of at least 10 W. This design is to be implemented on the base of 8 T cryomagnet at the FIR Center, Fukui.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"146 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":"122453459","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
Preliminary Design of Flattening Electrodes Temperature for Multistage Depressed Collectors 多级压抑集热器压平电极温度的初步设计
2021 22nd International Vacuum Electronics Conference (IVEC) Pub Date : 2021-04-27 DOI: 10.1109/IVEC51707.2021.9722411
Guangjiang Yuan, Weihao Shi, Mingyang Zhu, Lizheng Liu, Di Wu, Zhi-qiang Zhang
{"title":"Preliminary Design of Flattening Electrodes Temperature for Multistage Depressed Collectors","authors":"Guangjiang Yuan, Weihao Shi, Mingyang Zhu, Lizheng Liu, Di Wu, Zhi-qiang Zhang","doi":"10.1109/IVEC51707.2021.9722411","DOIUrl":"https://doi.org/10.1109/IVEC51707.2021.9722411","url":null,"abstract":"Hotspot, which can result in outgassing during multistage depressed collectors work, is undesirable for space travelling wave tube which of merits is high reliable. In the paper, flattening electrodes temperature was investigated during designing four-stage depressed collectors with high efficiency.","PeriodicalId":250593,"journal":{"name":"2021 22nd International Vacuum Electronics Conference (IVEC)","volume":"107 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":"122535368","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
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