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4th IEEE International Conference on Vacuum Electronics, 2003最新文献

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Peniotron 2.45 GHz for technology applications 用于技术应用的Peniotron 2.45 GHz
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286266
A. A. Kurayev, A. K. Sinitsyn, A. V. Shcherbakov
{"title":"Peniotron 2.45 GHz for technology applications","authors":"A. A. Kurayev, A. K. Sinitsyn, A. V. Shcherbakov","doi":"10.1109/IVEC.2003.1286266","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286266","url":null,"abstract":"Results of simulation of 2.4 GHz peniotron with using of optimization code PENOKS (PENiotron Optimization Kurayev and Sinitsyn) are presented. Peniotron parameters: it operates on the first gyroharmonic, accelerate voltage is /spl sim/10 kV, output power is 10-20 kW, the maximal efficiency is 80%.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125899511","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 simple model for studying the beam-wave interaction in the output gap of a klystron 研究速调管输出间隙中波束相互作用的简单模型
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286297
R. Carter, J. Feng
{"title":"A simple model for studying the beam-wave interaction in the output gap of a klystron","authors":"R. Carter, J. Feng","doi":"10.1109/IVEC.2003.1286297","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286297","url":null,"abstract":"This paper deals with simple model of the interaction between the output cavity of a klystron and an electron bunch has been developed using Mathcad method. The objective of this paper is to find out how to choose the klystron parameters to get the highest possible conversion efficiency under ideal conditions. The six-disc model investigates the effects of different parameters (electron velocity, trajectories) on the energy interchange in the output gap of a klystrons very quickly and easily.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127115473","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
High voltage electron device GMI 20/20 高压电子器件GMI 20/20
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286207
I. Guzilov, S. V. Lamonov, O. Maslennikov, V. Smirnov
{"title":"High voltage electron device GMI 20/20","authors":"I. Guzilov, S. V. Lamonov, O. Maslennikov, V. Smirnov","doi":"10.1109/IVEC.2003.1286207","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286207","url":null,"abstract":"This paper describes the high voltage electron device GMI 20/20. The vacuum electron beam triode-modulator GMI 20/20 made with metal-ceramic case has small sizes, high slope of the grid characteristic, wide intervals of admitted values of the grid current, cut-off voltage and heater power, the long service life. The oxide cathode of the triode is made with use of the arc-plasma deposition technology.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127142060","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
Perveance characteristics of intense electron beams in high power cylindrical diodes 强电子束在高功率圆柱二极管中的性能特性
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286229
K. Y. Sung, W. Jeon, S. H. Chun, K. B. Song, Y. Jung, M.C. Choi, Y. Seo, E. Choi
{"title":"Perveance characteristics of intense electron beams in high power cylindrical diodes","authors":"K. Y. Sung, W. Jeon, S. H. Chun, K. B. Song, Y. Jung, M.C. Choi, Y. Seo, E. Choi","doi":"10.1109/IVEC.2003.1286229","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286229","url":null,"abstract":"When an electron beam is generated from a cathode, an electron sheath plasma is also generated so that perveance of the diode is varied and changes the diode output characteristics. In our pulse power system \"Chundoong\" (Max 600 kV, 88 kA, 60 ns), the perveance value have been experimentally investigated and estimated from diode voltage and diode current. In this experiment, the anode- cathode (A-K) gap distance d has been varied from 4 mm to 10 mm. It is noted in this experiment that the diode perveance characteristics could be described as 7.0/spl times/10/sup -9//d/sup 1.82/. The sheath plasma expansion speed has also been estimated from the experiment, which is to be about 7 cm/us under A-K gap distance 4 mm.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130008095","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
Ultra short X-ray source based on the nonlinear Thomson scattering of femtosecond lasers from plasma-accelerated electron beams 基于等离子体加速电子束飞秒激光非线性汤姆逊散射的超短x射线源
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286320
N. Hafz, H. Lee, G. Kim, H. Suk
{"title":"Ultra short X-ray source based on the nonlinear Thomson scattering of femtosecond lasers from plasma-accelerated electron beams","authors":"N. Hafz, H. Lee, G. Kim, H. Suk","doi":"10.1109/IVEC.2003.1286320","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286320","url":null,"abstract":"In this paper, we propose an experimental scheme for a compact X-ray source which can produce X-ray pulses with 10 femtosecond duration. This novel X-ray source is based on the nonlinear Thomson backscattering of terawatt ultrashort infra-red laser from MeV plasma accelerated electrons, which are now routinely generated from the laser-wakefield accelerators. The synchronization between the TW laser and e-beam can simply be achieved via a jitter-less optical delay. At KERI, a 2 TW 700 fs laser system has been installed and the experiment on e-beam generation is ongoing. Here we show some simulation results for the typical ultrashort e-beam generation from the LWFA and the basic calculations for the X-ray generation.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128989334","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
Reduction of noise factor in TWT with a convergent electron beam 收敛电子束行波管噪声因子的降低
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286401
A. Danilov, S. Morev, A. D. Rafalovich
{"title":"Reduction of noise factor in TWT with a convergent electron beam","authors":"A. Danilov, S. Morev, A. D. Rafalovich","doi":"10.1109/IVEC.2003.1286401","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286401","url":null,"abstract":"This article describes the results of the work on reducing the noise factor submitted by means of choice the parameters of EOS for broadband traveling wave tube (TWT) with output level 100 W. For reduction the noise factor in this TWT has been increased at a sacrifice of the diameter of the cathode. Thus the amplitude of the magnetic field necessary for focusing the beam of a former has decreased. If P/sub input/ is greater than zero (P/sub input/ - output power), a noticeable dynamic defocusing took place (body current is greater than 10 mA). The dynamic defocusing has been suppressed due to the 1,2 times increase of the magnetic field at the end of the interaction space. The amplitude of the magnetic field was calculated. If the output power is equal to zero, the body current and the noise factor have not increased.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122542230","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
Measurement of excited Xe(1s/sub 4/) atoms versus various Xe contents to Ne gases in AC-PDP by laser absorption spectroscopy 激光吸收光谱法测定AC-PDP中受激Xe(1s/sub 4/)原子对不同Xe - Ne气体含量的影响
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286134
P. Oh, D.K. Park, J. Ahn, Y. Jung, H. Uhm, E. Choi
{"title":"Measurement of excited Xe(1s/sub 4/) atoms versus various Xe contents to Ne gases in AC-PDP by laser absorption spectroscopy","authors":"P. Oh, D.K. Park, J. Ahn, Y. Jung, H. Uhm, E. Choi","doi":"10.1109/IVEC.2003.1286134","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286134","url":null,"abstract":"The influence of various Xe contents to Ne gas on the excited Xe (1s4) atoms by laser absorption spectroscopy (LAS), and in turn on the luminous efficiency in AC-PDPs are studied. Also the spatial distribution of excited Xe(1s4) versus various Xe mixtures to Ne has been investigated. A mixture of Xe to Ne gas has been varied to be 4%, 7% and 10% at gas pressure of 300, 400, 500 and 600 Torr in this experiment.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"229 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123248642","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
Circuit analysis of Ka-band extended interaction klystron ka波段扩展相互作用速调管的电路分析
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286099
Y. Shin, G. Park, G. Scheitrum, G. Caryotakis
{"title":"Circuit analysis of Ka-band extended interaction klystron","authors":"Y. Shin, G. Park, G. Scheitrum, G. Caryotakis","doi":"10.1109/IVEC.2003.1286099","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286099","url":null,"abstract":"In this article, we explained about the design of extended interaction klystron. On account of increased circuit losses at millimeter wavelength, extended interaction klystron, EIK, which consists of a slow wave structure in each single cavity, is motivated. In order to estimate the performance of an optimized circuit, Wessel-Berg's space charge wave theory (WBA) is employed. In this procedure HFSS are directly applied to WBA. A one-dimensional disk-model simulation code, JPNDISK is also employed.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123297761","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: 13
Carbon nanotube lateral field emission devices 碳纳米管横向场发射装置
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286062
Seung-Beck Lee, A. The, K. Teo, D. Hasko, H. Ahmed, W. Milne, G. Amaratunga
{"title":"Carbon nanotube lateral field emission devices","authors":"Seung-Beck Lee, A. The, K. Teo, D. Hasko, H. Ahmed, W. Milne, G. Amaratunga","doi":"10.1109/IVEC.2003.1286062","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286062","url":null,"abstract":"Fabrication and operation of a carbon nanotube lateral field emission device is reported. Compared to vertical field emitters using carbon nanotube cathodes, it has less alignment problems since the anode is fabricated at the same time as the cathode and the gates, and also may have reduced leakage since the electrodes are well separated. We use thermally oxidised S as the substrate. Initially, Cr/Au alignment marks are deposited to use as reference markers. Then a thin layer of Al is evaporated, which act as the sacrificial layer. Multi-wall carbon nanotubes (MWCNT) were synthesised by plasma-enhanced chemical vapour deposition and dispersed on the Al surface. Electron beam lithography is used to define the anode, gates and the cathode contacts of the devices. After Cr/Al metal deposition and lift-off the sacrificial Al is etched away leaving the carbon nanotube suspended. An scanning electron microscopy (SEM) image of a carbon nanotube lateral field emitter was showed.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115701815","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
Efficiency improvements on IOTs 物联网效率提升
4th IEEE International Conference on Vacuum Electronics, 2003 Pub Date : 2003-05-28 DOI: 10.1109/IVEC.2003.1286010
M. Langlois
{"title":"Efficiency improvements on IOTs","authors":"M. Langlois","doi":"10.1109/IVEC.2003.1286010","DOIUrl":"https://doi.org/10.1109/IVEC.2003.1286010","url":null,"abstract":"This paper discusses the measures for efficient improvement on IOTs (inductive output tubes), and the trend of power increase with time. For analog TV, the average power varies substantially with picture content and standard. CW operation benefits of much better efficiencies because linearity and bandwidth are not needed. Enhancing beam efficiency was obtained by two ways: 1) better design of the gun and the output circuit. 2) use of depressed collectors, in which the electrons travel through retarding electric field and eventually fall on a collector with very little kinetic energy left. The different collectors are energized at various high voltage levels, calling for insulating cooling medium.","PeriodicalId":203178,"journal":{"name":"4th IEEE International Conference on Vacuum Electronics, 2003","volume":"263 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125419786","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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