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2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)最新文献

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Design and Study of W-band Gyrotron with Output Power of 150 kW Level 输出功率为150kw的w波段回旋管的设计与研究
2020 IEEE 21st International Conference on Vacuum Electronics (IVEC) Pub Date : 2020-10-19 DOI: 10.1109/IVEC45766.2020.9520618
Yujie Zhang, Qiao Liu, Ying-hui Liu, X. Niu, Jianwei Liu
{"title":"Design and Study of W-band Gyrotron with Output Power of 150 kW Level","authors":"Yujie Zhang, Qiao Liu, Ying-hui Liu, X. Niu, Jianwei Liu","doi":"10.1109/IVEC45766.2020.9520618","DOIUrl":"https://doi.org/10.1109/IVEC45766.2020.9520618","url":null,"abstract":"Based on the linear theory and the self-consistent nonlinear theory, a 94 GHz complex cavity gyrotron is designed with the pair of TE7.2/TE7.3 operating mode in this paper. Through operating at the high-order mode and second harmonic, the gyrotron can output hundred-kilowatt power at low magnetic field. Furthermore, the influences of electron beam parameters on interaction efficiency are analyzed in detail. As a result, the output power of 173 kW, corresponding to 34.83% efficiency, has been achieved with the beam voltage 71 kV, the beam current 7 A, the pitch factor 1.3 at the DC-magnetic field of 1.83T.","PeriodicalId":170853,"journal":{"name":"2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123429948","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 Radiation of Two Dimension Dipole Oscillations in Subwavelength Hole Array 亚波长空穴阵列中二维偶极子振荡的辐射
2020 IEEE 21st International Conference on Vacuum Electronics (IVEC) Pub Date : 2020-10-19 DOI: 10.1109/IVEC45766.2020.9520586
Xiaosong Wang, Ping Zhang, De-shuang Zhao, Yilin Pan, Liangjie Bi, Yin Yong, Bin Wang, Hailong Li, Xuesong Yuan, L. Meng
{"title":"The Radiation of Two Dimension Dipole Oscillations in Subwavelength Hole Array","authors":"Xiaosong Wang, Ping Zhang, De-shuang Zhao, Yilin Pan, Liangjie Bi, Yin Yong, Bin Wang, Hailong Li, Xuesong Yuan, L. Meng","doi":"10.1109/IVEC45766.2020.9520586","DOIUrl":"https://doi.org/10.1109/IVEC45766.2020.9520586","url":null,"abstract":"Smith-Purcell radiation is a kind of moving dipole oscillation radiation. In the subwavelength hole array, there are two-dimension dipole oscillations to happen when the e-beam is moving through the holes in a beam channel. It leads to the Smith-Purcell radiation energy enhanced, compared to one dipole oscillation in electron beam moving above period occurred metal surface. In addition, the dipole oscillation radiation takes place inside the hole, so the hole also plays a role to resonant the radiation so that the Smith-Purcell radiation has a good direction. Therefore, the radiation of two-dimension dipole oscillations in subwavelength hole array form a kind of Smith-Purcell radiation with intensity enhanced and the radiation direction tuned. It has potential to develop the vacuum electrons device based on Smith-Purcell radiation, such as Orotron, on-table THz free electron laser.","PeriodicalId":170853,"journal":{"name":"2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)","volume":"53 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123627602","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
Thermal and Structural Analysis of Multi-stage Depressed Collector for G-band Traveling Wave Tubes g波段行波管多级压抑集热器的热与结构分析
2020 IEEE 21st International Conference on Vacuum Electronics (IVEC) Pub Date : 2020-10-19 DOI: 10.1109/IVEC45766.2020.9520626
Yue Ou, Wenxin Liu, Longlong Yang, Zhengyuan Zhao
{"title":"Thermal and Structural Analysis of Multi-stage Depressed Collector for G-band Traveling Wave Tubes","authors":"Yue Ou, Wenxin Liu, Longlong Yang, Zhengyuan Zhao","doi":"10.1109/IVEC45766.2020.9520626","DOIUrl":"https://doi.org/10.1109/IVEC45766.2020.9520626","url":null,"abstract":"The Multi-stage depressed collector (MDC) is used as an essential efficiency enhancement technique in traveling-wave tubes (TWT). Two-third of the total power consumption of TWT is dissipated in the collector. In this paper, thermal and deformation analysis of MDC in G-band are implemented by using ANSYS. Temperature distribution of the MDC at given power supply are fully simulated, maximum deformations meanwhile in MDC at different ambient temperature are carefully compared with. The simulated prediction is in agreement with the experimental results.","PeriodicalId":170853,"journal":{"name":"2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122006622","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
W-Band 30W Continuous Wave wide band Folded Waveguide TWT w波段30W连续波宽频带折叠波导行波管
2020 IEEE 21st International Conference on Vacuum Electronics (IVEC) Pub Date : 2020-10-19 DOI: 10.1109/IVEC45766.2020.9520456
Fei Li, Liu Xiao, T. Ma, Yuhui Sun, Jian-dong Zhao, Jian Wang, Linlin Cao, Hong-xia Yi, Xin-wen Shang, Mingguang Huang
{"title":"W-Band 30W Continuous Wave wide band Folded Waveguide TWT","authors":"Fei Li, Liu Xiao, T. Ma, Yuhui Sun, Jian-dong Zhao, Jian Wang, Linlin Cao, Hong-xia Yi, Xin-wen Shang, Mingguang Huang","doi":"10.1109/IVEC45766.2020.9520456","DOIUrl":"https://doi.org/10.1109/IVEC45766.2020.9520456","url":null,"abstract":"A W-band 30W wideband continuous wave folded waveguide TWT (CWFWTWT)with 15kV operation voltage was designed and fabricated. The measured results showed that beam transmission was over 98.5% at dc and better than 97% at the highest peak RF power. Measured saturated output powers were higher than 31W within frequency range of90-99GHz. The maximum output power was 58.1W and the maximum saturated gain was 37.7dB at center frequency point of 94GHz.","PeriodicalId":170853,"journal":{"name":"2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122122428","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
Cold Test Design of the Open Resonant Cavity in a High-Order Mode Gyrotron 高阶模式回旋管开式谐振腔的冷试验设计
2020 IEEE 21st International Conference on Vacuum Electronics (IVEC) Pub Date : 2020-10-19 DOI: 10.1109/IVEC45766.2020.9520614
Meng-Li Jiao, Jirun Luo, Weixin Guo, Yu Fan, Zheng Wen, Chen Yang, Zhixian Li, Mingkui Zhu
{"title":"Cold Test Design of the Open Resonant Cavity in a High-Order Mode Gyrotron","authors":"Meng-Li Jiao, Jirun Luo, Weixin Guo, Yu Fan, Zheng Wen, Chen Yang, Zhixian Li, Mingkui Zhu","doi":"10.1109/IVEC45766.2020.9520614","DOIUrl":"https://doi.org/10.1109/IVEC45766.2020.9520614","url":null,"abstract":"A design of the cold test for frequency, Q-factor and electric field distribution of high-order mode resonator of gyrotron with a computer control is presented. The designed results show that the difference between maximum and minimum of electric filed can clearly be distinguished, which can be applied to the measurement of the electric field pattern on crossed section.","PeriodicalId":170853,"journal":{"name":"2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117180456","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
Analysis of Power Holes in Helix Traveling-Wave Tubes with Non-Uniform Delay-Lines 非均匀延迟线螺旋行波管电源孔分析
2020 IEEE 21st International Conference on Vacuum Electronics (IVEC) Pub Date : 2020-10-19 DOI: 10.1109/IVEC45766.2020.9520488
Moritz Hägermann, M. Wulff, P. Birtel, A. Jacob
{"title":"Analysis of Power Holes in Helix Traveling-Wave Tubes with Non-Uniform Delay-Lines","authors":"Moritz Hägermann, M. Wulff, P. Birtel, A. Jacob","doi":"10.1109/IVEC45766.2020.9520488","DOIUrl":"https://doi.org/10.1109/IVEC45766.2020.9520488","url":null,"abstract":"The influence of non-uniform delay lines on the parasitic effect of power holes in helix traveling-wave tubes is investigated. For the analysis, we introduce a helix geometry which favors power hole occurrence. The harmonic backward-wave is assumed to be excited through output-coupler mismatch. Whereas homogeneous delay lines can only cause a single power hole, the analysis shows that tapered helices may lead to multiple gain dips at different frequencies where each power hole can be assigned to a section of the delay line.","PeriodicalId":170853,"journal":{"name":"2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)","volume":"356 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124494013","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
Experimental Hot Test Results of a Metamaterial-Enhanced Resistive Wall Amplifier Prototype 一种超材料增强电阻壁放大器样机的热测试结果
2020 IEEE 21st International Conference on Vacuum Electronics (IVEC) Pub Date : 2020-10-19 DOI: 10.1109/IVEC45766.2020.9520468
P. Forbes, J. Booske, N. Behdad
{"title":"Experimental Hot Test Results of a Metamaterial-Enhanced Resistive Wall Amplifier Prototype","authors":"P. Forbes, J. Booske, N. Behdad","doi":"10.1109/IVEC45766.2020.9520468","DOIUrl":"https://doi.org/10.1109/IVEC45766.2020.9520468","url":null,"abstract":"The Metamaterial-Enhanced Resistive Wall Amplifier (MERWA) is theoretically predicted to offer high gain rates with a modest bandwidth. The MERWA operates via space charge wave growth due to interaction with a metamaterial that has been engineered to provide an inductive-resistive admittance to the edge of beam. Previous work has shown that an inductive-resistive metamaterial could be implemented using a periodic array of thin lossy wires. We have implemented and tested an experimental low-power prototype to validate the theory. This work details experimental hot test results.","PeriodicalId":170853,"journal":{"name":"2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124686747","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
Radial Multigap Resonant Cavity for W-Band High Power EIK w波段大功率EIK的径向多隙谐振腔
2020 IEEE 21st International Conference on Vacuum Electronics (IVEC) Pub Date : 2020-10-19 DOI: 10.1109/IVEC45766.2020.9520633
Shaomeng Wang, Yuanjin Zheng, S. Aditya
{"title":"Radial Multigap Resonant Cavity for W-Band High Power EIK","authors":"Shaomeng Wang, Yuanjin Zheng, S. Aditya","doi":"10.1109/IVEC45766.2020.9520633","DOIUrl":"https://doi.org/10.1109/IVEC45766.2020.9520633","url":null,"abstract":"A novel angular radial multigap resonant cavity (ARMRC) is proposed for W-band high power extended interaction klystron (EIK). The proposed cavity can operate with an angular radial sheet electron beam (ARSEB), which has larger space-charge limited current than conventional sheet electron beam. As a result, the angular radial EIK based on the proposed ARMRC is expected to provide higher output power than the corresponding conventional sheet beam EIK. High frequency characteristics of the proposed ARMRC are investigated here by using simulations. The 2 $pi -$ mode resonant frequencies of the ARMRC have been obtained for different radii, angular spread, and cavity heights. The study provides guidelines for the design of a high power angular radial EIK at W-band.","PeriodicalId":170853,"journal":{"name":"2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129698886","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
Effect of Electron Irradiation on Properties of RTV560 Silicon Rubber 电子辐照对RTV560硅橡胶性能的影响
2020 IEEE 21st International Conference on Vacuum Electronics (IVEC) Pub Date : 2020-10-19 DOI: 10.1109/IVEC45766.2020.9520593
Guangjiang Yuan, Ruiqi Li, Wei Song, Mingyang Zhu, Guoxing Miao, Jiuchun Yan
{"title":"Effect of Electron Irradiation on Properties of RTV560 Silicon Rubber","authors":"Guangjiang Yuan, Ruiqi Li, Wei Song, Mingyang Zhu, Guoxing Miao, Jiuchun Yan","doi":"10.1109/IVEC45766.2020.9520593","DOIUrl":"https://doi.org/10.1109/IVEC45766.2020.9520593","url":null,"abstract":"High voltage terminals are enclosed with RTV560 silicone rubber. Space travelling wave tubes are exposed in irradiation environment. As one organic elastomer, silicone rubber is degraded by the radiation. In the paper, effect of electron irradiation on properties of RTV560 silicone rubber was investigation. The used electrons have an energy range 10~100 keV, and the irradiation fluence ranges from 1.0×106 rad to 1.0×107 rad. At last, roughness, hardness, DTA and TGA were measured and analyzed for all samples.","PeriodicalId":170853,"journal":{"name":"2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128677414","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
Barium Dispenser Cathode Operation in a Cesium Vapor Environment for Applications in Thermionic Converters 应用于热离子转换器的铯蒸气环境中的钡分配器阴极操作
2020 IEEE 21st International Conference on Vacuum Electronics (IVEC) Pub Date : 2020-10-19 DOI: 10.1109/IVEC45766.2020.9520500
Daniel Velázquez, Hsin-I Lu, Mark Stone, D. Merthe
{"title":"Barium Dispenser Cathode Operation in a Cesium Vapor Environment for Applications in Thermionic Converters","authors":"Daniel Velázquez, Hsin-I Lu, Mark Stone, D. Merthe","doi":"10.1109/IVEC45766.2020.9520500","DOIUrl":"https://doi.org/10.1109/IVEC45766.2020.9520500","url":null,"abstract":"Thermionic converters are devices that convert heat directly into electricity with no moving parts. Thermionics require a high current density emission source. Historically, Ba dispenser cathodes have not been used in thermionic converters due to practical limitations surrounding poor background pressure in thermionics. Here we measure the impact of cesium exposure on the performance of a Ba dispenser cathode that that had previously been exposed to air. Measurements indicate that cesium exposure accelerates cathode activation and increases current density, even in the case of unconventionally high base pressures (>10-7 Torr).","PeriodicalId":170853,"journal":{"name":"2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131981294","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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