Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524)最新文献_第10页

Progress update on CPI 500 kW and 1 MW, multi-second-pulsed gyrotrons CPI 500千瓦和1兆瓦多秒脉冲回旋管的最新进展

Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524) Pub Date : 2002-08-07 DOI: 10.1109/IVELEC.2002.999406

K. Felch, M. Blank, P. Borchard, P. Cahalan, S. Cauffman, T. S. Chu, H. Jory

引用次数: 25

Comprehensive simulations of compact THz radiation sources using microfabricated, folded waveguide TWTs 使用微制造折叠波导行波管的紧凑太赫兹辐射源的综合模拟

Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524) Pub Date : 2002-08-07 DOI: 10.1109/IVELEC.2002.999242

S. Bhattacharjee, C. Kory, W.-J. Lee, S. Gallagher, D. W. van der Weide, J. Booske, S. Limbach

引用次数: 9

A novel phase noise suppression technique for high power microwave amplifiers 大功率微波放大器相位噪声抑制新技术

Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524) Pub Date : 2002-08-07 DOI: 10.1109/IVELEC.2002.999410

Y. Goren, C. Jensen, D. Gagne, P. Lally, D. Zavadil

引用次数: 0

Effect of the beam parameters on the non-linear performance in broadband helix TWTs 光束参数对宽带螺旋行波管非线性性能的影响

Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524) Pub Date : 2002-08-07 DOI: 10.1109/IVELEC.2002.999382

R. Jenkins, R. Carter

引用次数: 3

Artificial neural networks for the representation of axisymmetric magnetic fields in TWT collectors 用人工神经网络表示行波管集热器中轴对称磁场

Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524) Pub Date : 2002-08-07 DOI: 10.1109/IVELEC.2002.999284

G. Capizzi, S. Coco, Antonino Laudani

{"title":"Artificial neural networks for the representation of axisymmetric magnetic fields in TWT collectors","authors":"G. Capizzi, S. Coco, Antonino Laudani","doi":"10.1109/IVELEC.2002.999284","DOIUrl":"https://doi.org/10.1109/IVELEC.2002.999284","url":null,"abstract":"The focusing magnetic field in TWT collectors is usually generated by means of permanent magnets suitably positioned along the symmetry axis. In numerical simulations, 3D representations of this axis-symmetric magnetic field are generally built from the knowledge of experimentally measured 1D symmetry-axis values, by using a model based on equivalent ideal loop sources (Vaughan, 1972 and 1974; Stankiewicz, 1979; Jackson, 1999; Coco et al, 2001; Coco and Laudani, 2002). From these sources, off-axis fields are computed (radial and axial components), either by means of exact analytic expressions in terms of elliptic integrals or by means of approximated partial series expansions or Legendre polynomials. The ideal loop model is considered to work satisfactorily if it is able to reproduce correctly the input experimental on-axis values. In this paper a new efficient procedure to calculate the parameters of the equivalent ideal loop representation by using a neural approach is presented. The neural approach allows us to obtain a very accurate representation of complicated shape fields by using only few coils, in such a way as to reduce computational effort.","PeriodicalId":344852,"journal":{"name":"Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124125345","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 study on low-velocity-spread axis-encircling electron gun for harmonic gyrotrons 谐波回旋管低速扩散绕轴电子枪的实验研究

Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524) Pub Date : 2002-08-07 DOI: 10.1109/IVELEC.2002.999373

S. Jeon, C. Baik, D. Kim, B. Jia, G. Park, N. Sato, K. Yokoo

引用次数: 0

Emission uniformity studies of gyrotron MIG cathodes 回旋管MIG阴极发射均匀性研究

Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524) Pub Date : 2002-08-07 DOI: 10.1109/IVELEC.2002.999375

J. Anderson, M. Shapiro, R. Temkin, K. Felch

引用次数: 0

A new triplet gyrotron amplifier, the gyrotriotron 一种新的三重态回旋加速器放大器，回旋回旋加速器

Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524) Pub Date : 2002-08-07 DOI: 10.1109/IVELEC.2002.999291

H. Guo, Y. Miao, J. Rodgers, V. Granatstein, Ruihan Wu, J.R. Luo, D.S. Wu, Y. Yin, Y. Miao, Y.S. Zhang, Z. Cai, L. Zheng, Y. Su, W. Guo, Y. Luan, Y.G. Ding

{"title":"A new triplet gyrotron amplifier, the gyrotriotron","authors":"H. Guo, Y. Miao, J. Rodgers, V. Granatstein, Ruihan Wu, J.R. Luo, D.S. Wu, Y. Yin, Y. Miao, Y.S. Zhang, Z. Cai, L. Zheng, Y. Su, W. Guo, Y. Luan, Y.G. Ding","doi":"10.1109/IVELEC.2002.999291","DOIUrl":"https://doi.org/10.1109/IVELEC.2002.999291","url":null,"abstract":"Summary form only given. A new triplet gyrotron amplifier, which we call gyrotriotron, has recently been developed. The device consists of a gyro-TWT input stage to modulate the beam at S/sub 1/=1 cyclotron harmonic, a four-unit clustered-cavity as intermediate stage to bunch the beam at S/sub 2/=2 cyclotron harmonic and a gyro-TWT output stage to extract energy from the bunched beam at S/sub 3/=2 cyclotron harmonic. Electronic coupling between neighboring stages is realized through ballistic beam bunching in the radiation-free drift space similar to what happens in a gyroklystron. Since S/sub 3/=S/sub 2/=2S/sub 1/, the device is a harmonic multiplying gyrotron amplifier with a scheme of 1-2-2. The clustered-cavity employed in the gyrotriotron is a group of TE/sub 03/ mode-selected cavities, which are closely adjacent and without any coupling between them. HFSS simulation of a sub-unit of such a mode selective clustered-cavity is given. This is a first use of cluster cavity in a gyrotron. The proof-of-principle gyrotriotron with Ku-band input, Ka-band TE/sub 04/ mode output, predicted peak output power of 500 kW and 5% bandwidth, has been fabricated and is being tested in the Harmonic Gyrotron Lab at University of Maryland.","PeriodicalId":344852,"journal":{"name":"Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131174537","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: 17

A high efficiency, miniaturized Ka band traveling wave tube based on a novel finned ladder RF circuit design 基于新型翅片梯形射频电路设计的高效小型化Ka波段行波管

Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524) Pub Date : 2002-08-07 DOI: 10.1109/IVELEC.2002.999251

E. Wintucky, Jeffrey D. Wilson, K. R. Vaden, D. A. Force, Jon C. Freeman, G. Lesny, C. Kory, C. Chevalier, B. Ebihara, J. Dayton

引用次数: 1

New opportunities in vacuum electronics through the application of microfabrication technologies 通过微加工技术的应用，真空电子学的新机遇

Third IEEE International Vacuum Electronics Conference (IEEE Cat. No.02EX524) Pub Date : 2002-08-07 DOI: 10.1109/IVELEC.2002.999234

J. Booske

引用次数: 33