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2013 IEEE 14th International Vacuum Electronics Conference (IVEC)最新文献

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Overview on pulsed UHF sources at Thales Electron Devices 泰利斯电子器件脉冲超高频源概述
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571020
A. Beunas, Michel Grézaud, C. Bel, A. Boussaton, B. Darges
{"title":"Overview on pulsed UHF sources at Thales Electron Devices","authors":"A. Beunas, Michel Grézaud, C. Bel, A. Boussaton, B. Darges","doi":"10.1109/IVEC.2013.6571020","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571020","url":null,"abstract":"The aim of this paper is to cover the different technologies for pulsed UHF applications, such as the ESS program. The presentation will describe the various technologies with their performance and their limitations or constraints, taking into account also their evolution in the next decade, the Science facilities being used in such time frame.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121313584","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: 5
Study the effect of positive dispersion in input circuit of broadband helix Traveling Wave tubes 研究了宽带螺旋行波管输入电路中正色散的影响
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571155
Yu-Lu Hu, Yanmei Wang, Zhonghai Yang, Jianqing Li, Bin Li
{"title":"Study the effect of positive dispersion in input circuit of broadband helix Traveling Wave tubes","authors":"Yu-Lu Hu, Yanmei Wang, Zhonghai Yang, Jianqing Li, Bin Li","doi":"10.1109/IVEC.2013.6571155","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571155","url":null,"abstract":"An analysis of the effect of positive dispersion in input circuit of broadband helix Traveling-Wave tubes (TWTs) is put forward. Using the positive dispersion at the start of the input circuit, the frequencies at high band is synchronized while the low band is not. Thus, the interaction length of high band frequencies is extend, while the low band wave is delayed to be interaction, and the parasitic harmonic wave is also to be delayed. Then the effect can be improved at high band frequencies. A 6~18GHz TWT is designed and simulated with a positive dispersion at the start of the input circuit (slow wave structure without vane) and followed with the negative dispersion (slow wave structure with deep vane), the efficiency in band is shown slightly improved.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121414805","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
Sheet beam design using EOS 利用EOS进行板梁设计
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571154
Q. Hu, Tao Huang, Zhonghai Yang, Jianqing Li, Bin Li
{"title":"Sheet beam design using EOS","authors":"Q. Hu, Tao Huang, Zhonghai Yang, Jianqing Li, Bin Li","doi":"10.1109/IVEC.2013.6571154","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571154","url":null,"abstract":"A sheet beam is designed using the code EOS. We compare even magnetic field and wiggler magnetic field and then get some interseting results.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126015362","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 parasitic mode oscillations for 95 GHz gyrotron beam tunnel 95 GHz回旋管波束隧道寄生模振荡分析
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571061
N. Kumar, U. Singh, V. Yadav, Anil Kumar, A. Sinha
{"title":"Analysis of parasitic mode oscillations for 95 GHz gyrotron beam tunnel","authors":"N. Kumar, U. Singh, V. Yadav, Anil Kumar, A. Sinha","doi":"10.1109/IVEC.2013.6571061","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571061","url":null,"abstract":"The analysis for the parasitic mode excitation is performed for gyrotron beam tunnel. Scattering matrix simulations are performed for the initial design of the beam tunnel. Here only the symmetric TE modes are observed due to the week damping inside the tunnel. Various approaches are used for investigation of parasitic mode excitations.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130933670","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 oscillations in the Recirculating Planar Magnetron 循环平面磁控管中的微波振荡
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571175
M. Franzi, R. Gilgenbach, B. Hoff, Y. Lau, D. Simon, D. French, N. Jordan, J. Luginsland
{"title":"Microwave oscillations in the Recirculating Planar Magnetron","authors":"M. Franzi, R. Gilgenbach, B. Hoff, Y. Lau, D. Simon, D. French, N. Jordan, J. Luginsland","doi":"10.1109/IVEC.2013.6571175","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571175","url":null,"abstract":"The Recirculating Planar Magnetron (RPM) is a crossed-field device which presents numerous potential advantages in generating High Power Microwaves (HPM). A 12-cavity, conventional-polarity, 1-GHz RPM model has been experimentally designed and tested at a -300 kV, 0.3-0.5 microsecond pulselengths and a 0.2 T axial magnetic field. The experimental results and future concepts are under investigation.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115790088","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
Investigation of 0.14THz pill-box window for folded waveguide TWT 折叠波导行波管0.14THz药盒窗的研究
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571174
Zhang Chen, Yajun Wang
{"title":"Investigation of 0.14THz pill-box window for folded waveguide TWT","authors":"Zhang Chen, Yajun Wang","doi":"10.1109/IVEC.2013.6571174","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571174","url":null,"abstract":"A broadband pill-box window with sapphire piece for 0.14THz folded waveguide traveling wave tube is manufactured. Cold-test result shows the attenuation of the window is about 0.7dB during 0.13THz-0.15THz. Using the back-to-back method, the RF coupling system including pill-box and taper waveguide is test. The result shows that the VSWR is less than 1.2, which meets the practical requirements in 0.14THz folded waveguide TWT.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124306604","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
Scandate cathode with sharp transition 具有急剧过渡的鳞状阴极
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571037
B. Vancil, V. Schmidt, J. Lorr, I. Brodie
{"title":"Scandate cathode with sharp transition","authors":"B. Vancil, V. Schmidt, J. Lorr, I. Brodie","doi":"10.1109/IVEC.2013.6571037","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571037","url":null,"abstract":"We report on a new cathode which is based on die-pressed matrices made from scandia-doped tungsten powder. Transition temperatures from space charge to temperature limited emission are as low as 840° Cb(W) for emission of 5 Amps/cm2. Transitions are sharper than previously published scandate cathodes and compare favorably with M and ternary alloy cathodes. We present emission curves on several cathodes, show comparisons to other types of cathodes, and offer tentative explanations for the improvement. We discuss their suitability in microwave tubes at loadings of 5-10 Amps/cm2.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114809765","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
Analytical solutions of the dispersion and coupling impedance for the double slot coupled cavity slow wave structure in TWT 行波管双槽耦合腔慢波结构色散和耦合阻抗的解析解
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6570898
Fangming He, Jirun Luo, Mingkui Zhu, Wei Guo
{"title":"Analytical solutions of the dispersion and coupling impedance for the double slot coupled cavity slow wave structure in TWT","authors":"Fangming He, Jirun Luo, Mingkui Zhu, Wei Guo","doi":"10.1109/IVEC.2013.6570898","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6570898","url":null,"abstract":"An analytical model is presented for the double slot coupled cavity slow-wave structure (CCSWS) in this abstract. By matching boundary conditions in conjunction with Green's function techniques and moment method (MOM), the formulae for discussing the high frequency characteristics of the SWS, including dispersion and coupling impedance, are given.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114688630","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
Fabrication and emission property of LaC2-Mo cathode LaC2-Mo阴极的制备及其发射性能
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571138
Jinshu Wang, W. Liu, Changcai Li, Liran Dong, Meiling Zhou, T. Zuo
{"title":"Fabrication and emission property of LaC2-Mo cathode","authors":"Jinshu Wang, W. Liu, Changcai Li, Liran Dong, Meiling Zhou, T. Zuo","doi":"10.1109/IVEC.2013.6571138","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571138","url":null,"abstract":"A new kind of cathode, LaC<sub>2</sub>-Mo cathode was prepared through spark plasma sintering method by using the mixed powder of LaC<sub>2</sub> which was prepared by vacuum melting method and molybdenum. It was found that the emission properties of LaC<sub>2</sub>-Mo cathode increases with the LaC<sub>2</sub> content increasing. The emission current density of LaC<sub>2</sub>-Mo cathode which contains 3.5wt.% LaC<sub>2</sub> could reach 0.90A/cm<sup>2</sup> at 1400.b whereas that of LaC<sub>2</sub>-Mo cathode with 10wt.% LaC<sub>2</sub> could reach 3.02A/cm<sup>2</sup> at 1400.b. Richardson Work function of LaC<sub>2</sub>-Mo with LaC<sub>2</sub> 3.5wt% is 2.53eV.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123704868","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
Work function measurements on coated and uncoated tungsten dispenser cathodes using a Kelvin probe 使用开尔文探针对涂覆和未涂覆钨分配器阴极进行功函数测量
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571038
P. Swartzentruber, J. Balk, J. Tarter
{"title":"Work function measurements on coated and uncoated tungsten dispenser cathodes using a Kelvin probe","authors":"P. Swartzentruber, J. Balk, J. Tarter","doi":"10.1109/IVEC.2013.6571038","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571038","url":null,"abstract":"The room temperature work functions of several dispenser cathode configurations under different conditions were evaluated using a Kelvin probe.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122054063","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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