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

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Analysis of quadrupole focusing lattices for electron beam transport in traveling-wave tubes 电子束在行波管中输运的四极聚焦格分析
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571121
K. Nichols, E. Schamiloglu, B. Carlsten
{"title":"Analysis of quadrupole focusing lattices for electron beam transport in traveling-wave tubes","authors":"K. Nichols, E. Schamiloglu, B. Carlsten","doi":"10.1109/IVEC.2013.6571121","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571121","url":null,"abstract":"Analysis of a quadrupole focusing lattice for high-frequency TWT's is presented. Single particle tracking is performed to determine the phase advance, with the eventual goal of determining the advantageous frequency regime for devices using this focusing method. This work is motivated by recent work which demonstrated an advantageous case for strong focusing employing a Halbach quadrupole lattice.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"43 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":"125831631","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
Lifetime and reliability analysis of klystrons 速调管的寿命和可靠性分析
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6570967
A. Balkcum, T. Habermann
{"title":"Lifetime and reliability analysis of klystrons","authors":"A. Balkcum, T. Habermann","doi":"10.1109/IVEC.2013.6570967","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6570967","url":null,"abstract":"Repair histories for nearly 1,700 klystrons of four fundamentally different design types and applications have been monitored for up to 22 years. Statistical analysis of the failure data indicate mean time between failure values at the 90% confidence level ranging from 18 to 63 field service years for these devices.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"166 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":"124656770","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
A 15-beam electron gun for an X-Band klystron x波段速调管的15束电子枪
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571129
M. Read, R. Ives, D. Marsden, G. Collins, P. Borchard
{"title":"A 15-beam electron gun for an X-Band klystron","authors":"M. Read, R. Ives, D. Marsden, G. Collins, P. Borchard","doi":"10.1109/IVEC.2013.6571129","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571129","url":null,"abstract":"A 15-beam electron gun was designed, fabricated, and installed on a 100 KW, X-Band klystron. The gun uses controlled porosity reservoir (CPR) cathodes operating at 30 A/cm2 to provide the high quality electron beams for the RF circuit. Because the CPR cathodes can provide such a high current density with a long lifetime, the beam can be generated without compression. This greatly simplifies the gun and solenoid designs.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"67 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":"127449780","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
Improving the field emission property of zinc oxide by directly growing on graphene layer 在石墨烯层上直接生长提高氧化锌的场致发射性能
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6570955
Ning Zhao, Chenyan Shi, K. Qu, Chi Li, W. Lei, Xiaobing Zhang
{"title":"Improving the field emission property of zinc oxide by directly growing on graphene layer","authors":"Ning Zhao, Chenyan Shi, K. Qu, Chi Li, W. Lei, Xiaobing Zhang","doi":"10.1109/IVEC.2013.6570955","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6570955","url":null,"abstract":"Zinc oxide was directly grown on the graphene layer by the hydrothermal synthesis method, and the field emission property of this hybrid structure was tested by a diode structure device. Compared with the Zinc oxide directly grown on the silicon substrates, the hybrid emitter shows better performance in the field emission properties, including low turn-on field, threshold field and high emission current. The results provide an efficient way to improve the field emission property of ZnO by using graphene layer.","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":"128894328","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 diary of a TWT engineer vacuum tubes don't suck 行波管工程师的日记真空管不烂
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571161
M. J. Carruthers
{"title":"The diary of a TWT engineer vacuum tubes don't suck","authors":"M. J. Carruthers","doi":"10.1109/IVEC.2013.6571161","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571161","url":null,"abstract":"It was popular opinion that solid state was the future and vacuum tubes were an obsolete technology. After almost 20 years as a TWT engineer I subscribed to that ideal and left the industry only to return to the business 15 years later as an end user working with Satcom Amplifiers. So what does it takes to be a Vacuum Tube Engineer, how has the industry progressed and where does the future lie? Have we kept pace with other technologies as we strive to produce more powerful, more efficient and broader band devices?","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"84 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":"125575422","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
Analysis of mode competition in 10kW/28GHz gyrotron 10kW/28GHz回旋管模式竞争分析
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571021
A. Malygin, S. Illy, I. Pagonakis, K. Avramides, M. Thumm, J. Jelonnek, D. D'Andrea, R. Ives, C. Munz
{"title":"Analysis of mode competition in 10kW/28GHz gyrotron","authors":"A. Malygin, S. Illy, I. Pagonakis, K. Avramides, M. Thumm, J. Jelonnek, D. D'Andrea, R. Ives, C. Munz","doi":"10.1109/IVEC.2013.6571021","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571021","url":null,"abstract":"This paper presents a mode competition study for a 10kW/28GHz gyrotron. Three different codes were used for cavity simulations: a single mode self-consistent code, the multi-mode non-stationary code EURIDICE and a three-dimensional Particle-In-Cell (PIC) code based on a discontinuous Galerkin approach. Competition between first and second harmonic modes was studied.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"48 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":"123377790","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
Hamiltonian Description of the Electron and its Radiated Field in a Periodic Structure 周期结构中电子及其辐射场的哈密顿描述
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571107
F. André, P. Bernardi, N. Ryskin, F. Doveil, Y. Elskens
{"title":"Hamiltonian Description of the Electron and its Radiated Field in a Periodic Structure","authors":"F. André, P. Bernardi, N. Ryskin, F. Doveil, Y. Elskens","doi":"10.1109/IVEC.2013.6571107","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571107","url":null,"abstract":"We present an Hamiltonian formulation of dynamics of the electron and the electro-magnetic field it radiates. The relativistic electron dynamics is governed by the Lorentz force and the fields by Maxwell equations. It is shown that this set of equations can be derived from an Hamiltonian that will be detailed in this presentation.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"40 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":"122574035","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
Cherenkov-like radiation from metallic metamaterials 来自金属超材料的切伦科夫样辐射
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571143
A. Bera, M. Sattorov, O. Kwon, R. Barik, S. Min, G. Park
{"title":"Cherenkov-like radiation from metallic metamaterials","authors":"A. Bera, M. Sattorov, O. Kwon, R. Barik, S. Min, G. Park","doi":"10.1109/IVEC.2013.6571143","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571143","url":null,"abstract":"The radiation of slit modes excited by convection electron inside a perfect metal film perforated with one dimensional array of cut-through slit is studied. The radiations of non radiating slit modes are achieved by grating coupler which provides the required momentum shift to them. Numerical simulation shows that the radiation intensity of these momentum shifted slit modes are more than that of Smith-Purcell radiation by more than one order magnitude.","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":"126066745","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
W-band gyro-TWA using a cusp electron gun and a helically corrugated interaction region 使用尖端电子枪和螺旋波纹相互作用区域的w波段陀螺- twa
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6570917
W. He, C. Donaldson, L. Zhang, P. Mcelhinney, K. Ronald, A. Cross
{"title":"W-band gyro-TWA using a cusp electron gun and a helically corrugated interaction region","authors":"W. He, C. Donaldson, L. Zhang, P. Mcelhinney, K. Ronald, A. Cross","doi":"10.1109/IVEC.2013.6570917","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6570917","url":null,"abstract":"Theoretical calculation, numerical simulation and experimental development of a W-band gyro-TWA with a helically corrugated waveguide and a cusp electron gun are presented. The cusp gun generated a 40 keV, 1.5 A axis-encircling electron beam. The maximum output of the gyro-TWA was predicted to be 5 kW with a 3 dB frequency bandwidth of 90-100 GHz and a saturated gain of 37 dB. The latest experimental results will be presented.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"41 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":"125330283","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
Pulsed depressed collector for high-efficiency RF systems 用于高效射频系统的脉冲抑制集热器
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6570962
M. Kemp, A. Jensen, J. Neilson
{"title":"Pulsed depressed collector for high-efficiency RF systems","authors":"M. Kemp, A. Jensen, J. Neilson","doi":"10.1109/IVEC.2013.6570962","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6570962","url":null,"abstract":"Many emerging applications for high power RF sources place a premium on electrical efficiency. For pulsed systems, much of the energy is lost in the rising and falling edges of the beam current. This paper presents the concept of a pulsed depressed collector and the resulting improvements in system efficiency.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"10 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":"125338543","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
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