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

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Compact sub-THz gyrotrons for real-time T-ray imaging 用于实时t射线成像的紧凑亚太赫兹回旋管
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571060
Seong‐Tae Han
{"title":"Compact sub-THz gyrotrons for real-time T-ray imaging","authors":"Seong‐Tae Han","doi":"10.1109/IVEC.2013.6571060","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571060","url":null,"abstract":"Having the capability of generating superior output power with good spatial pattern at sub-THz region compared to other sources, gyrotron is well suited for realtime T-ray imaging application. In this presentation, details of the compact gyrotrons developed at KERI for real-time inspection of foreign bodies in food will be discussed.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"47 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":"114814661","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
Some physical phenomena in the collector region of multi-beam klystron 多束速调管集电极区的一些物理现象
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571170
Yao-gen Ding, Bin Shen, Haibing Ding, Hong-hong Gu
{"title":"Some physical phenomena in the collector region of multi-beam klystron","authors":"Yao-gen Ding, Bin Shen, Haibing Ding, Hong-hong Gu","doi":"10.1109/IVEC.2013.6571170","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571170","url":null,"abstract":"Some physical phenomena had been observed in the collector region of the C-band and S-band MBKs made by Institute of Electronics, Chinese Academy of Sciences (IECAS). One of them is the overheating of the collector inner surface, which will lead to the evaporation of the copper. The second one is the potential drop at the entrance of the collector, which will lead to the electron reflection. The third one is the microwave leakage at the collector ceramic insulator. These phenomena will be described in this paper. The calculation results on the spread of multiple electron beams and the resonant modes in the collector region were also given. Some suggestions for solving these problems will be discussed.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"28 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":"126814672","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
Waveguide window for a broadband multibeam Ka-band klystron 宽带多波束ka波段速调管的波导窗口
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6570891
I. Freidovich, B. Prokofiev, A. Balabanov, A. Yegorov, A. Zakirov, A. Grigoriev
{"title":"Waveguide window for a broadband multibeam Ka-band klystron","authors":"I. Freidovich, B. Prokofiev, A. Balabanov, A. Yegorov, A. Zakirov, A. Grigoriev","doi":"10.1109/IVEC.2013.6570891","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6570891","url":null,"abstract":"An RF pillbox-type window for a broadband multibeam Ka-band klystron whose cavities operate in higher mode is described. The window has a thick vacuum-tight barrier made of pyrolitic boron nitride. Its S-parameters are stable in respect of the barrier dielectric permittivity dispersion due to the energy transmission in the TM01-mode of the circular waveguide.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"219 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":"124337973","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
Numerical modeling of liquid cooled CCTWT collector 液冷CCTWT集热器的数值模拟
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6570970
A. K. Singh, P. Srikrishna, S. Subramanian
{"title":"Numerical modeling of liquid cooled CCTWT collector","authors":"A. K. Singh, P. Srikrishna, S. Subramanian","doi":"10.1109/IVEC.2013.6570970","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6570970","url":null,"abstract":"This paper discusses effect of design parameters of liquid cooled CCTWT collector on its thermal performance. Design parameters like collector thickness, cooling channel aspect ratio, Coolant flow rate, channel width, channel height, fin width and number of channels are used to derive analytical model and demonstrate effect of individual parameter on Collector thermal performance. This Analytical model demonstrates approaches to increase thermal performance of collector and bring down total thermal resistance and pressure drop of collector. Nusselt number, Reynolds number and Heat transfer coefficient are used to indicate individual channel performance, while total thermal resistance and pressure drop are used for collector thermal performance.","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":"121741924","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
On the use of metamaterials for increasing of output power of multibeam klystrons 利用超材料提高多束速调管输出功率的研究
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571125
A. Galdetskiy
{"title":"On the use of metamaterials for increasing of output power of multibeam klystrons","authors":"A. Galdetskiy","doi":"10.1109/IVEC.2013.6571125","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571125","url":null,"abstract":"At restricted anode voltage output power of multibeam klystron is limited by amount of beams. It depends on the diameter of ferrules in microwave cavities which is limited by a half of wavelength. Special design of the cavity filled with artificial metamaterial increases phase velocity and wavelength inside the gap which makes possible to increase significantly the diameter of ferrules, total current and output power.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"112 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":"124772024","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
Design of a G-band harmonic multiplying gyrotron traveling-wave amplifier with a mode-selective circuit 带模式选择电路的g波段谐波倍增回旋管行波放大器的设计
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571047
Y. Yeh, C. Lai, C. Chen, T. Lin
{"title":"Design of a G-band harmonic multiplying gyrotron traveling-wave amplifier with a mode-selective circuit","authors":"Y. Yeh, C. Lai, C. Chen, T. Lin","doi":"10.1109/IVEC.2013.6571047","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571047","url":null,"abstract":"A high-order-mode harmonic multiplying gyro-TWA could allow the amplifier to achieve high average powers. An improved mode-selective circuit is employed for suppressing non-TE0n competing modes while wall losses are employed for suppressing TE0n competing modes. A G-band second harmonic multiplying gyro-TWT is predicted to yield a peak output power of 56 kW at 200 GHz with an efficiency of 11%, a saturated gain of 48 dB and a 3 dB bandwidth of 3.6 GHz.","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":"125050946","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
KA-SAT and future HTS systems KA-SAT和未来的HTS系统
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571160
H. Fenech, Amos, Tomatis, Soumpholphkakdy
{"title":"KA-SAT and future HTS systems","authors":"H. Fenech, Amos, Tomatis, Soumpholphkakdy","doi":"10.1109/IVEC.2013.6571160","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571160","url":null,"abstract":"Launched in December 2010 KA-SAT represents the first of the current generation of High Throughput Satellites (HTS). With a total system capacity of over 90Gbit/s and the capability of supporting up to a million users, it delivers services akin to those provided by terrestrial ADSL2+. In order to meet increasing demands on capacity, and subsequently on equipment, it is expected that the bandwidth of the TWTA will need to cover 2.9GHz. We discuss the technology employed in KA-SAT and where it is anticipated it will lead us.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"99 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":"123169631","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: 38
Asymmetric immersed pole undulators for high-frequency sources 高频源的不对称浸没极波动器
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571078
R. Jackson, M. Read, R. Ives
{"title":"Asymmetric immersed pole undulators for high-frequency sources","authors":"R. Jackson, M. Read, R. Ives","doi":"10.1109/IVEC.2013.6571078","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571078","url":null,"abstract":"Present magnetic undulators have shortcomings at short periods making them expensive to construct, operate and maintain. The Asymmetric Immersed Pole (AIP) undulator concept avoids many of these complexities by using soft iron to convert axial to transverse field. This paper presents results from an investigation of AIP undulators.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"70 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":"126335028","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
Design and experiment of a V-band helix TWT v波段螺旋行波管的设计与实验
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6570942
Li Li, Jinjun Feng, B. Qu, Y. Shang
{"title":"Design and experiment of a V-band helix TWT","authors":"Li Li, Jinjun Feng, B. Qu, Y. Shang","doi":"10.1109/IVEC.2013.6570942","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6570942","url":null,"abstract":"In this paper, the design and optimization of a V-band helix TWT is carried out and prototype tubes have been assembled. The test results show that the output power of the TWT is over 15W with the overall efficiency of over 14.5% and a gain of over 43dB.The beam transmission experiment shows that a transmission ratio is over 97%.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"257 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120871095","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
Sol-gel synthesis of Sc2O3 doped W nano-particle for cathode application 溶胶-凝胶法制备阴极用Sc2O3掺杂W纳米颗粒
2013 IEEE 14th International Vacuum Electronics Conference (IVEC) Pub Date : 2013-05-21 DOI: 10.1109/IVEC.2013.6571142
R. Barik, A. Bera, A. Tanwar, I. Baek, K. Eom, M. Sattorov, S. Min, O. Kwon, G. Park
{"title":"Sol-gel synthesis of Sc2O3 doped W nano-particle for cathode application","authors":"R. Barik, A. Bera, A. Tanwar, I. Baek, K. Eom, M. Sattorov, S. Min, O. Kwon, G. Park","doi":"10.1109/IVEC.2013.6571142","DOIUrl":"https://doi.org/10.1109/IVEC.2013.6571142","url":null,"abstract":"Sc2O3 doped W nano-powder is believed to play a dominant role for improving emission capabilities of the high current density thermionic cathodes. In this study a novel nano-particle synthesis approach was adopted in order to precisely control the particle parameters. The particle characteristics and sintering behavior has been analyzed using SEM, TEM, EDS, XRD and XPS. Uniform grain size with average particle diameter~50 nm, spherical morphology, uniform phase and homogeneous mixing of Sc2O3 doped W nano-powder was obtain which will enhance the emission current density, emission uniformity and life of the cathode.","PeriodicalId":283300,"journal":{"name":"2013 IEEE 14th International Vacuum Electronics Conference (IVEC)","volume":"28 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":"121081034","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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