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2007 IEEE International Vacuum Electronics Conference最新文献

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Steady State Operation of High Power Gyrotron for ITER ITER大功率回旋加速器的稳态运行
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283205
A. Kasugai, K. Kajiwara, K. Takahashi, N. Kobayashi, T. Kariya, Y. Mitsunaka, K. Sakamoto
{"title":"Steady State Operation of High Power Gyrotron for ITER","authors":"A. Kasugai, K. Kajiwara, K. Takahashi, N. Kobayashi, T. Kariya, Y. Mitsunaka, K. Sakamoto","doi":"10.1109/IVELEC.2007.4283205","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283205","url":null,"abstract":"A steady-state operation of 1 MW/800 s with the efficiency of 55%, which exceeded 1 MW/400 s of the performance required in ITER, was demonstrated in 170 GHz gyrotron. The oscillation characteristics in the long pulse operation was clarified, and the advanced operation scenario of the gyrotron to the high efficiency oscillation was newly established by controlling a pitch factor of the electron beam and the cavity magnetic field in the long pulse operation. In the long pulse experiment, the steady state operation of 1 hour with the output power of 0.6 MW was also demonstrated.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133723079","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: 9
Investigation of Transmission Characteristic in Corrugated Waveguide Transmission Lines for Fusion Application 融合用波纹波导传输线传输特性研究
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283322
K. Takahashi, K. Kajiwara, A. Kasugai, N. Kobayashi, K. Sakamoto
{"title":"Investigation of Transmission Characteristic in Corrugated Waveguide Transmission Lines for Fusion Application","authors":"K. Takahashi, K. Kajiwara, A. Kasugai, N. Kobayashi, K. Sakamoto","doi":"10.1109/IVELEC.2007.4283322","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283322","url":null,"abstract":"A 170 GHz, high power and long pulse RF experiments of the ITER relevant transmission line consisting of 63.5 mm circular corrugated waveguides, bends, an in-line switch and etc... was, for the first time, carried out. The transmission efficiency of 92% from the inlet of the transmission line to the end, which is comparable to the specification value was successfully obtained. The anomalous incremental temperature between the bends or after/before the bend were observed. This result suggests that the bends generated the higher order modes and the modes are possibly trapped between them and reflect back to the direction propagating toward them.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133526064","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
Beam focusing by periodic permanent magnetic system with polyharmonic magnetic field distribution 具有多谐磁场分布的周期性永磁系统的光束聚焦
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283231
A. Darmaev, S. Morev
{"title":"Beam focusing by periodic permanent magnetic system with polyharmonic magnetic field distribution","authors":"A. Darmaev, S. Morev","doi":"10.1109/IVELEC.2007.4283231","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283231","url":null,"abstract":"The investigation of beam focusing by periodic permanent magnetic system with polyharmonic magnetic field distribution was presented.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131539974","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
Large Orbit Gyrotron Using Pulsed Relativistic Electron Beam 基于脉冲相对论电子束的大轨道回旋加速器
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283399
Weihua Jiang, K. Hashimoto, K. Itoh, M. Daimon
{"title":"Large Orbit Gyrotron Using Pulsed Relativistic Electron Beam","authors":"Weihua Jiang, K. Hashimoto, K. Itoh, M. Daimon","doi":"10.1109/IVELEC.2007.4283399","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283399","url":null,"abstract":"High power far-infrared radiations are expected to have wide applications in material development, medical analysis, and plasma diagnostics. We are developing large orbit gyrotron (LOG) as high-power radiation source for the frequency range of 100 GHz - 1 THz. The studies were carried out through both experimental and simulation approaches.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128443526","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
MBEG-MSU: Computer Code for the Multiple Beam Electron Gun Simulations 多束电子枪模拟的计算机代码
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283250
S. Kozlov, V. M. Pikunov, A. N. Sandalov
{"title":"MBEG-MSU: Computer Code for the Multiple Beam Electron Gun Simulations","authors":"S. Kozlov, V. M. Pikunov, A. N. Sandalov","doi":"10.1109/IVELEC.2007.4283250","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283250","url":null,"abstract":"3D computer code MBEG-MSU for multiple beam electron gun analysis is developed. The main numerical methods used in program code are described. Calculation results of 18-beam electron gun investigation in kinematics mode are presented. The first calculation results with taking into account space charge effects are presented too.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"282 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134353402","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 investigation of phase shifting in 1D Bragg structures for high power microwave pulse compression 高功率微波脉冲压缩一维Bragg结构相移的实验研究
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283339
P. Maclnnes, I. Konoplev, A. Cross, A. Phelps
{"title":"Experimental investigation of phase shifting in 1D Bragg structures for high power microwave pulse compression","authors":"P. Maclnnes, I. Konoplev, A. Cross, A. Phelps","doi":"10.1109/IVELEC.2007.4283339","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283339","url":null,"abstract":"The hybrid active Bragg cavity to be used for pulse compression will be constructed from a single 2D Bragg mirror joined by a smooth waveguide to a ID Bragg active output mirror. Hybrid cavities have notable advantages over cavities which are based solely on 1D or 2D structures, as it allows for tighter frequency control due to the stricter requirements that must be satisfied for interaction with a 2D mirror. In this paper, the experimental (thin line) and theoretical (bold line) data are compared. This will be combined with an active ID Bragg coaxial output mirror which can relatively easily be changed from closed to open state by changing the relative phase of the 1D Bragg corrugation.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133135107","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
Ohmic Losses Influence on Periodic Waveguide Field Distribution 欧姆损耗对周期波导场分布的影响
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283229
A. A. Kurayev, A. K. Sinitsyn, S.I. Yaramionak
{"title":"Ohmic Losses Influence on Periodic Waveguide Field Distribution","authors":"A. A. Kurayev, A. K. Sinitsyn, S.I. Yaramionak","doi":"10.1109/IVELEC.2007.4283229","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283229","url":null,"abstract":"With the use of block-matrix sweep techniques of numerical modeling the influence of ohmic losses in the waveguide walls are investigated. The absence of agreement with the second order periodic condition for EM field distribution in the longitudinally-periodic waveguide with lossy walls is shown.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"2011 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125622781","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
Fabrication and Testing of a W-band Sheet Beam Klystron w波段片束速调管的制作与测试
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283281
G. Scheitrum, G. Caryotakis, A. Jensen, A. Burke, A. Haase, E. Jongewaard, M. Neubauer, B. Steele
{"title":"Fabrication and Testing of a W-band Sheet Beam Klystron","authors":"G. Scheitrum, G. Caryotakis, A. Jensen, A. Burke, A. Haase, E. Jongewaard, M. Neubauer, B. Steele","doi":"10.1109/IVELEC.2007.4283281","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283281","url":null,"abstract":"SLAC has developed a 50 kW peak power, 2.5 kW average power, W-band, sheet beam klystron (WSBK). The magnetic circuit was modified to provide increased field at the start of the penultimate cavity to account for RF bunching and defocusing. The output section of the magnetic uses higher energy product magnets and eliminates the polepiece offsets used to provide focusing in the wide dimension of the beam.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124557044","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
Input Circuit for a Wideband IOT 宽带物联网的输入电路
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283367
R. Kowalczyk, M. Kirshner, C. Wilsen
{"title":"Input Circuit for a Wideband IOT","authors":"R. Kowalczyk, M. Kirshner, C. Wilsen","doi":"10.1109/IVELEC.2007.4283367","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283367","url":null,"abstract":"Emission gated microwave amplifiers, such as the inductive output tube (IOT), use density modulation to establish an AC current on the electron beam directly at the cathode surface. These amplifiers are compact and highly efficient, even in the linear regime. L-3 Electron Devices Division is developing a wide instantaneous bandwidth IOT (WBIOT) which will provide output power levels suitable for UHF radar applications with a 1 dB bandwidth in excess of ten percent. In this paper we describe the input circuit of the WBIOT.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127655161","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: 4
Advanced Microfabrication Techniques for Millimetre Band Cavities 毫米带腔的先进微加工技术
2007 IEEE International Vacuum Electronics Conference Pub Date : 2007-05-15 DOI: 10.1109/IVELEC.2007.4283251
M. Verdiel, J. Protz
{"title":"Advanced Microfabrication Techniques for Millimetre Band Cavities","authors":"M. Verdiel, J. Protz","doi":"10.1109/IVELEC.2007.4283251","DOIUrl":"https://doi.org/10.1109/IVELEC.2007.4283251","url":null,"abstract":"microfabrication recipe involving Deep Reactive Ion Etching, Chemical Mechanical Polishing, and Silicon Direct Bonding is proposed as a way to fabricate high precision cavities for millimetre band devices. The effect of fabrication variances on device performance is predicted.","PeriodicalId":254940,"journal":{"name":"2007 IEEE International Vacuum Electronics Conference","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121427030","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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