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2016 IEEE International Vacuum Electronics Conference (IVEC)最新文献

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2-D particle-in-cell simulations of high efficiency klystrons 高效率速调管的二维粒子胞内模拟
2016 IEEE International Vacuum Electronics Conference (IVEC) Pub Date : 2016-04-19 DOI: 10.1109/IVEC.2016.7561813
D. Constable, C. Lingwood, G. Burt, I. Syratchev, A. Y. Baikov, R. Marchesin, R. Kowalczyk
{"title":"2-D particle-in-cell simulations of high efficiency klystrons","authors":"D. Constable, C. Lingwood, G. Burt, I. Syratchev, A. Y. Baikov, R. Marchesin, R. Kowalczyk","doi":"10.1109/IVEC.2016.7561813","DOIUrl":"https://doi.org/10.1109/IVEC.2016.7561813","url":null,"abstract":"Currently, klystrons employing monotonic bunching offer efficiencies on the order of 70%. Through the use of the core oscillation electron bunching mechanism, numerical simulations have predicted klystrons with efficiencies up to 90%. In this paper, we present PIC simulations of such geometries operating at a frequency of 800 MHz, with efficiencies up to 83% predicted thus far.","PeriodicalId":361429,"journal":{"name":"2016 IEEE International Vacuum Electronics Conference (IVEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130270916","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: 6
Design, fabrication, and measurement of nose-cone loaded folded-waveguide delay line in Q-band q波段锥头负载折叠波导延迟线的设计、制造与测量
2016 IEEE International Vacuum Electronics Conference (IVEC) Pub Date : 2016-04-19 DOI: 10.1109/IVEC.2016.7561843
S. Meyne, P. Birtel, A. Jacob
{"title":"Design, fabrication, and measurement of nose-cone loaded folded-waveguide delay line in Q-band","authors":"S. Meyne, P. Birtel, A. Jacob","doi":"10.1109/IVEC.2016.7561843","DOIUrl":"https://doi.org/10.1109/IVEC.2016.7561843","url":null,"abstract":"A Q-band folded-waveguide delay line is presented which is loaded with nose cones that are intended to increase the beam-wave coupling in a traveling-wave tube. The fabrication process is briefly outlined and one-port measurement results are evaluated to compare the dispersion with full-wave results. The results prove the concept of field enhancement due to the nose cones with an acceptable increase in manufacturing complexity.","PeriodicalId":361429,"journal":{"name":"2016 IEEE International Vacuum Electronics Conference (IVEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131049522","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
2-dimensional microstrip meander-line for broad band planar TWTs 宽带平面行波管的二维微带弯曲线
2016 IEEE International Vacuum Electronics Conference (IVEC) Pub Date : 2016-04-19 DOI: 10.1109/IVEC.2016.7561870
Chong Ding, Yanyu Wei, Yuanyuan Wang, Jin Xu, T. Tang, Mingzhi Huang, Luqi Zhang, Qian Li, X. Lei, Y. Gong, Wenxiang Wang, Dazhi Li
{"title":"2-dimensional microstrip meander-line for broad band planar TWTs","authors":"Chong Ding, Yanyu Wei, Yuanyuan Wang, Jin Xu, T. Tang, Mingzhi Huang, Luqi Zhang, Qian Li, X. Lei, Y. Gong, Wenxiang Wang, Dazhi Li","doi":"10.1109/IVEC.2016.7561870","DOIUrl":"https://doi.org/10.1109/IVEC.2016.7561870","url":null,"abstract":"A 2-dimensional (2-D) ring-bar microstrip meander-line for broad band miniaturization planar traveling-wave tubes (TWTs) has been proposed in this paper. Simulated by 3-D high frequency software, the cold band width of this 2-D ring-bar microstrip meander-line slow wave structure (SWS) is almost double that of the traditional U-shaped microstrip meander-line SWS at the same dimensions, which means that this modified structures is a promising SWS for wide band planar TWTs.","PeriodicalId":361429,"journal":{"name":"2016 IEEE International Vacuum Electronics Conference (IVEC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132647389","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: 2
New RF load for testing high power gyrotrons 用于测试大功率回旋管的新型射频负载
2016 IEEE International Vacuum Electronics Conference (IVEC) Pub Date : 2016-04-19 DOI: 10.1109/IVEC.2016.7561829
R. Ives, D. Marsden, T. Bui, G. Collins, R. Karimov, Y. M. Mizuhara, J. Neilson
{"title":"New RF load for testing high power gyrotrons","authors":"R. Ives, D. Marsden, T. Bui, G. Collins, R. Karimov, Y. M. Mizuhara, J. Neilson","doi":"10.1109/IVEC.2016.7561829","DOIUrl":"https://doi.org/10.1109/IVEC.2016.7561829","url":null,"abstract":"RF loads are required to test high power gyrotrons currently in development for the ITER fusion test reactor in France. Because ITER is a nuclear facility, strict safety and environmental specifications are applied to all equipment installed in the facility. This requires RF loads that can dissipate 1.5 MW CW at 170 GHz with strict limitations on materials in contact with vacuum and cooling systems. This presentation describes development of an RF load meeting ITER specifications.","PeriodicalId":361429,"journal":{"name":"2016 IEEE International Vacuum Electronics Conference (IVEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130644155","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 path of a Ka-Band Extended Interaction Klystron for space-borne interferometer 星载干涉仪ka波段扩展相互作用速调管的研制路径
2016 IEEE International Vacuum Electronics Conference (IVEC) Pub Date : 2016-04-19 DOI: 10.1109/IVEC.2016.7561784
W. Harvey, M. Tope, D. Esteban-Fernandez, A. Roitman, E. Sokol, D. Berry
{"title":"Development path of a Ka-Band Extended Interaction Klystron for space-borne interferometer","authors":"W. Harvey, M. Tope, D. Esteban-Fernandez, A. Roitman, E. Sokol, D. Berry","doi":"10.1109/IVEC.2016.7561784","DOIUrl":"https://doi.org/10.1109/IVEC.2016.7561784","url":null,"abstract":"An Extended Interaction Klystron (EIK) design has been developed to the support extreme signal stability requirements of space-borne interferometric applications. This is an unprecedented set of requirements for an EIK. In conjunction with the Canadian Space Agency (ASC/CSA)and Jet Propulsion Laboratory, Communications and Power Industries, Canada (CPI) advanced this development through testing of a heritage design EIK, testing a dedicated Demonstration Model EIK and an Engineering Model EIK. Each step of testing provided guidance in the development of the EIK Design, finally providing confidence in the EIK's ability to support the needs of the interferometric radar.","PeriodicalId":361429,"journal":{"name":"2016 IEEE International Vacuum Electronics Conference (IVEC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123001572","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: 3
Accurate Electromagnetic simulation of dielectrics in device structures using Neptune 利用Neptune对器件结构中介电体进行精确的电磁模拟
2016 IEEE International Vacuum Electronics Conference (IVEC) Pub Date : 2016-04-19 DOI: 10.1109/IVEC.2016.7561757
S. Cooke, G. Stantchev, T. Antonsen
{"title":"Accurate Electromagnetic simulation of dielectrics in device structures using Neptune","authors":"S. Cooke, G. Stantchev, T. Antonsen","doi":"10.1109/IVEC.2016.7561757","DOIUrl":"https://doi.org/10.1109/IVEC.2016.7561757","url":null,"abstract":"Dielectric materials play an important role in many classes of vacuum electronic device, but they present unique challenges to simulate accurately using time-domain Electromagnetic Particle-in-Cell (EM-PIC) codes. Results for previously published embedded boundary (or `cut-cell') algorithms typically do not exhibit true 2nd-order convergence with respect to grid cell size when curved interfaces must be resolved, particularly when the ratio of dielectric constants across an interface is large. We demonstrate here a new algorithm for time-domain simulation of structures that successfully addresses this challenge and provides accurate results in a broad range of geometries. We have implemented the algorithm within the Neptune EM-PIC code to execute efficiently on fast GPUs or multicore CPUs, and will present results for specific device simulations.","PeriodicalId":361429,"journal":{"name":"2016 IEEE International Vacuum Electronics Conference (IVEC)","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115220824","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
Constant impedance tunable IOT power extraction circuit 恒阻抗可调物联网电源提取电路
2016 IEEE International Vacuum Electronics Conference (IVEC) Pub Date : 2016-04-19 DOI: 10.1109/IVEC.2016.7561771
A. Narayan, B. Beaudoin, Charles Turner, N. Goyal, T. Antonsen
{"title":"Constant impedance tunable IOT power extraction circuit","authors":"A. Narayan, B. Beaudoin, Charles Turner, N. Goyal, T. Antonsen","doi":"10.1109/IVEC.2016.7561771","DOIUrl":"https://doi.org/10.1109/IVEC.2016.7561771","url":null,"abstract":"The resonant circuit in an Inductive Output Tube (IOT) extracts the kinetic energy of the modulated electron beam converting it to electromagnetic energy. For the application considered here, mobile low-frequency sources (5-10 MHz) for ionospheric heating, high efficiency is important, and thus class D operation is desired. The broad frequency range requires the circuit to be tunable, and the need for a constant decelerating voltage requires constant impedance. This paper discusses the design and construction of a resonant circuit with a highly coupled transformer that has the above features. The design and optimization of the circuit was performed with Orcad Spice and the transformer design was designed using Autodesk Inventor and a finite element electromagnetic field solver, Maxwell 3D and HFSS Simulator software.","PeriodicalId":361429,"journal":{"name":"2016 IEEE International Vacuum Electronics Conference (IVEC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122150853","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 narrow sheet beam electron gun designed by approximate Pierce method for the millimeter wave TWT 采用近似皮尔斯法设计了毫米波行波管窄束电子枪
2016 IEEE International Vacuum Electronics Conference (IVEC) Pub Date : 2016-04-19 DOI: 10.1109/IVEC.2016.7561917
Hongtao Liang, C. Ruan, Q. Xue
{"title":"A narrow sheet beam electron gun designed by approximate Pierce method for the millimeter wave TWT","authors":"Hongtao Liang, C. Ruan, Q. Xue","doi":"10.1109/IVEC.2016.7561917","DOIUrl":"https://doi.org/10.1109/IVEC.2016.7561917","url":null,"abstract":"An approximate Pierce method is proposed which gives a convenient and theoretical analysis way for a one-dimensional compressed narrow sheet beam electron gun design by translating concentric spheres to fit coaxial cylinders. Using the theoretical calculation and the parameters analysis, the comparative Pierce gun for axially symmetric beam and narrow sheet beam are designed by 3-D simulation software. The simulation results show both models generate the beams closely matched the desired gun with the current of 0.14A, and the voltage of 22kV, which can obtain the beam compression by a factor of four in one direction.","PeriodicalId":361429,"journal":{"name":"2016 IEEE International Vacuum Electronics Conference (IVEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130114906","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
Fabrication of the L-3 L6200 multi-beam IOT for ESS 用于ESS的L-3 L6200多波束物联网的研制
2016 IEEE International Vacuum Electronics Conference (IVEC) Pub Date : 2016-04-19 DOI: 10.1109/IVEC.2016.7561767
M. Kirshner, R. Kowalczyk, B. Weatherford, A. Sy, H. Schult, A. Zubyk, M. Boyle, L. Turek, R. True
{"title":"Fabrication of the L-3 L6200 multi-beam IOT for ESS","authors":"M. Kirshner, R. Kowalczyk, B. Weatherford, A. Sy, H. Schult, A. Zubyk, M. Boyle, L. Turek, R. True","doi":"10.1109/IVEC.2016.7561767","DOIUrl":"https://doi.org/10.1109/IVEC.2016.7561767","url":null,"abstract":"L-3 Communications Electron Devices (L-3 EDD) is developing a high power Multi-beam IOT (MBIOT) for the European Spallation Source (ESS). Extensive simulation work has been completed and, where possible, results were validated against experiment using a scaled single-beam prototype. The MBIOT design has been finalized; fabrication of the tube is in progress, and configuration of a factory test bay is underway.","PeriodicalId":361429,"journal":{"name":"2016 IEEE International Vacuum Electronics Conference (IVEC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128810702","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: 2
Design and fabrication of double corrugated waveguide for a Ka-band traveling wave tube ka波段行波管双波纹波导的设计与制造
2016 IEEE International Vacuum Electronics Conference (IVEC) Pub Date : 2016-04-19 DOI: 10.1109/IVEC.2016.7561844
C. Paoloni, M. Mineo, L. Bushnell, M. Beardsley, K. Parow-Souchon, M. Henry, P. Huggard
{"title":"Design and fabrication of double corrugated waveguide for a Ka-band traveling wave tube","authors":"C. Paoloni, M. Mineo, L. Bushnell, M. Beardsley, K. Parow-Souchon, M. Henry, P. Huggard","doi":"10.1109/IVEC.2016.7561844","DOIUrl":"https://doi.org/10.1109/IVEC.2016.7561844","url":null,"abstract":"The double corrugated waveguide is demonstrated to be a slow wave structure which is straightforward to manufacture and assemble. The design and fabrication of a Ka-band prototype is presented. The ability of the double corrugated waveguide to be bent through 90° has permitted the build of a compact slow wave structure with very good electrical behavior which is suitable for millimeter wave travelling wave tubes.","PeriodicalId":361429,"journal":{"name":"2016 IEEE International Vacuum Electronics Conference (IVEC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122206043","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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