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Dielectric, serpentine, and loaded-helix slow wave structures for W-band traveling wave tubes w波段行波管的介电、蛇形和加载螺旋慢波结构
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857550
J. Calame, A. Cook, C. Joye, B. Albright, K. Nguyen, E. Wright, R. Myers, L. Ludeking
{"title":"Dielectric, serpentine, and loaded-helix slow wave structures for W-band traveling wave tubes","authors":"J. Calame, A. Cook, C. Joye, B. Albright, K. Nguyen, E. Wright, R. Myers, L. Ludeking","doi":"10.1109/IVEC.2014.6857550","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857550","url":null,"abstract":"Designs and simulated performance for W-band traveling wave tubes are presented for three slow wave structure types (dielectric, serpentine waveguide, and cavity-loaded helix). Output powers are 120 and 245 W at 94 GHz for dielectric and serpentine, respectively, with 5-6 GHz bandwidth (9 GHz in serpentine with equalization).","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"77 1","pages":"181-182"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81491691","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
The development of X-band and W-band sheet beam klystron in IECAS IECAS中x波段和w波段片束速调管的研制
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857470
C. Ruan, Ding Zhao, Xiudong Yang, Changqing Zhang, Shuzhong Wang
{"title":"The development of X-band and W-band sheet beam klystron in IECAS","authors":"C. Ruan, Ding Zhao, Xiudong Yang, Changqing Zhang, Shuzhong Wang","doi":"10.1109/IVEC.2014.6857470","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857470","url":null,"abstract":"In this paper, the development of X-band and W-band sheet beam klystron (SBK) is introduced thoroughly in IECAS recently. The compact planar PCM and closed PCM system are used to focus the sheet beam for both of two types SBK. For the five multi-gap-cavity X-band SBK (XSBK), the cross section of beam is of 50mmx4mm, and with the beam voltage of 150kV, beam current of 100A, the designed output power is about 4.6MW with the gain of 39.6dB and efficiency of 30.7%. The XSBK has been manufactured and tested successfully and the output power is about 2.8MW with the beam voltage of 123kV and beam current of 70A. For the seven multi-gap-cavity W-band SBK (WSBK) with the beam cross section of 10mm×0.5mm, the designed output power is about 30kW with the beam voltage of 75kV and beam current of 4A the gain and efficiency is of 40dB and 10% respectively At, present the WSBK has been manufactured, and the hot test is being processed.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"102 1","pages":"21-22"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78364976","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
Characterization of MgO-TiO2-based ceramic materials at W-band mgo - tio2基陶瓷材料的w波段表征
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857538
A. Cook, J. Calame, N. Mahadik
{"title":"Characterization of MgO-TiO2-based ceramic materials at W-band","authors":"A. Cook, J. Calame, N. Mahadik","doi":"10.1109/IVEC.2014.6857538","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857538","url":null,"abstract":"We report characterization of low-loss MgO-TiO2 system ceramic materials in the 75-110 GHz (W-band) and 0.5-18 GHz frequency ranges. Measurements of the complex permittivity are used to study the dielectric constant, loss tangent, and DC conductivity (low-frequency) behavior of the materials for application in millimeter-wave vacuum electron devices. We investigate the effects of varying ceramic synthesis process parameters on the rf material properties.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"21 1","pages":"159-160"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78880817","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 research on RF output envelope of C-band Multi-Beam Klystron c波段多波束速调管射频输出包络线研究
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857624
Yao-gen Ding, Jing Cao, Xiaoxin Sun, Bin Shen, Haibing Ding
{"title":"The research on RF output envelope of C-band Multi-Beam Klystron","authors":"Yao-gen Ding, Jing Cao, Xiaoxin Sun, Bin Shen, Haibing Ding","doi":"10.1109/IVEC.2014.6857624","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857624","url":null,"abstract":"The shoulder and the tilt of RF output envelope of the C-band broadband MBK are described and discussed in the paper. The RF envelope shoulder occurs mainly at low part of the operating frequency band, and is caused by the gassing of microwave attenuation material FeSiAl covering on the wall of the cavity. The RF envelope tilt is caused by the drop of the pulse voltage and the dependence of efficiency on the beam voltage. These physical phenomena are explained and analyzed in the paper. The methods for overcoming the RF envelope shoulder and reduce the RF envelope tilt are also discussed.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"41 1","pages":"331-332"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85350391","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
Development of high power high efficiency S-band PPM klystrons 大功率高效率s波段PPM速调管的研制
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857641
P. Ferguson, M. Read, L. Ives
{"title":"Development of high power high efficiency S-band PPM klystrons","authors":"P. Ferguson, M. Read, L. Ives","doi":"10.1109/IVEC.2014.6857641","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857641","url":null,"abstract":"Calabazas Creek Research is developing several high power S-band periodic permanent magnet (PPM) focused klystrons. We report on the design of a 5.5 MW pulsed klystron and a 75 MW pulsed klystron, both for providing high peak power for advanced accelerators. The efficiency requirement of both klystrons is determined by system requirements. We will present results from extensive simulations using out in-house large signal klystron code (KLSC) and the large signal code TESLA. We will also describe our unique PPM structures which permits direct access to frequency tuning and liquid cooling of the individual cavities.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"365 1","pages":"365-365"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83022252","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 a chiral dielectric loaded folded-waveguide slow-wave structure 手性介质加载折叠波导慢波结构分析
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857614
Somnath Mahato, P. Rao, A. Bose, S. K. Datta
{"title":"Analysis of a chiral dielectric loaded folded-waveguide slow-wave structure","authors":"Somnath Mahato, P. Rao, A. Bose, S. K. Datta","doi":"10.1109/IVEC.2014.6857614","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857614","url":null,"abstract":"Analysis of a chiral dielectric filled serpentine folded-waveguide slow-wave structure has been carried out and its `slow-wave characteristics' are obtained. Chiral dielectric filling has been seen to be useful in enhancing both the pass-band and the interaction impedance of the structure.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"64 1","pages":"311-312"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80333524","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
Thermal co-simulation of depressed collector of a TWT using CST studio 基于CST studio的行波管凹陷集热器热联合模拟
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857534
P. Rao, T. Chanakya, S. K. Datta, S. Kamath, L. Kumar
{"title":"Thermal co-simulation of depressed collector of a TWT using CST studio","authors":"P. Rao, T. Chanakya, S. K. Datta, S. Kamath, L. Kumar","doi":"10.1109/IVEC.2014.6857534","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857534","url":null,"abstract":"Thermal co-simulation of a two-stage depressed collector of a TWT has been carried out using CST Particle Studio. Distribution of thermal load as computed from the particle loss has been directly linked with the thermal solver of the CST Studio. Thermal co-simulation of the collector provided some physical insights into the generation of hot-spots and overall thermal behavior of the collector for operations both with and without RF. Effects of the secondary electron emission have also been included in the simulation.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"1991 1","pages":"151-152"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82348403","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: 8
A 94 GHz overmoded coupled cavity TWT experiment 94 GHz超模耦合腔行波管实验
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857548
E. Kowalski, W. Guss, M. Shapiro, R. Temkin
{"title":"A 94 GHz overmoded coupled cavity TWT experiment","authors":"E. Kowalski, W. Guss, M. Shapiro, R. Temkin","doi":"10.1109/IVEC.2014.6857548","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857548","url":null,"abstract":"A 94 GHz overmoded coupled-cavity Traveling Wave Tube (TWT) has been designed with 30 dB of gain and 300 W peak power output. An experiment is being fabricated to test the overmoded TWT. The device operates in the TM31 mode with minimal losses, and a lossy AlN dielectric loading is selectively placed in the structure to suppress unwanted modes in the cavities. A cold test of the overmoded coupled-cavities was machined in Glidcop and agrees well with simulation. The TWT experiment is currently under operation, with a 2.5 kG solenoid magnet, 2 microsecond pulse modulator, and in-house designed 30 kV Pierce electron gun. An initial beam test of the 30kV, 320 mA Pierce electron gun shows good agreement with Michelle simulations, and further results are forthcoming.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"1 1","pages":"177-178"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84570768","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
SWS band-edge oscillator SWS带边振荡器
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857491
Jun Cai, Xianping Wu, Jinjun Feng
{"title":"SWS band-edge oscillator","authors":"Jun Cai, Xianping Wu, Jinjun Feng","doi":"10.1109/IVEC.2014.6857491","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857491","url":null,"abstract":"Vacuum electron devices are key devices for many applications due to their high frequency and high power characteristics. To exploit the frequency above 100GHz, a SWS band-edge oscillator (SWSBO) is proposed for a compact source of high-power radiation based on interaction in the region near band-edge of SWS. Because the impedance near band-edge becomes so great that strong interaction can occur. The concept of SWSBO has been successfully demonstrated experimentally using folded waveguide SWS. The experimental F-band prototype reaches maximum pulsed output power of 32W and the oscillator frequency of 124.44GHz with the voltage of 23.1kV and the current of 150mA, respectively.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"267 1","pages":"63-64"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79800436","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
THz backward wave oscillator based on PhC-wall corrugated waveguide 基于phc壁波纹波导的太赫兹反向波振荡器
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857492
R. Letizia, M. Mineo, C. Paoloni
{"title":"THz backward wave oscillator based on PhC-wall corrugated waveguide","authors":"R. Letizia, M. Mineo, C. Paoloni","doi":"10.1109/IVEC.2014.6857492","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857492","url":null,"abstract":"A slow-wave structure based on a corrugated waveguide employing photonic crystal (PhC) lateral walls is proposed for THz vacuum devices. The PhC design alleviates typical issues arising in THz tubes assembly without affecting the interaction process. A backward-wave oscillator based on the proposed technology is designed and simulated using 3D particle-in-cell code, obtaining more than 90 mW-peak output power at 0.641 THz.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"1 1","pages":"65-66"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79814477","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
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