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Copper electroforming for UV LIGA technology 铜电铸UV LIGA技术
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857581
Hanyan Li, Xinghui Li, Guodong Bai, Jinjun Feng
{"title":"Copper electroforming for UV LIGA technology","authors":"Hanyan Li, Xinghui Li, Guodong Bai, Jinjun Feng","doi":"10.1109/IVEC.2014.6857581","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857581","url":null,"abstract":"This paper investigates effects of current waveforms and densities on surface morphology and microstructural characterization of copper films. Comparing to the direct current (DC) waveform, the pulse waveform plating produces a fine, void-free grain copper structure. The grain size of copper films is 194 nm and copper films are capable of enduring high temperature without bubbles.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"80 5 1","pages":"245-246"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89279604","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
A helix TWT with an external electron beam 带有外部电子束的螺旋行波管
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857620
Y. Pchelnikov
{"title":"A helix TWT with an external electron beam","authors":"Y. Pchelnikov","doi":"10.1109/IVEC.2014.6857620","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857620","url":null,"abstract":"A TWT model, comprising a dielectric rod with a sheath helix on its surface and an external electron beam (EB), is analyzed below. The dispersion characteristics and the coupling coefficient, characterizing the EB interaction strength are calculated for different values of the rod's permittivity. The possibility of the significant increase in the output power using the external EB is considered.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"165 1","pages":"323-325"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76552272","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
Precise measurement of field patterns from a TE02 mode converter using the electro-optic probe scanning system 利用电光探头扫描系统精确测量TE02模式转换器的场模式
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857693
I. Lee, Kwang hoon Kim, M. Choe, Dong-Joon Lee, E. Choi
{"title":"Precise measurement of field patterns from a TE02 mode converter using the electro-optic probe scanning system","authors":"I. Lee, Kwang hoon Kim, M. Choe, Dong-Joon Lee, E. Choi","doi":"10.1109/IVEC.2014.6857693","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857693","url":null,"abstract":"This paper presents electric field pattern measurements by an excellent field scanning system using a stable electro-optic (EO) field probe. It provides higher resolution and less field distortions than a metal based probe. We simulated a TE02 gyrotron mode converter by CST Microwave Studio and estimated the mode converter field pattern at 28 GHz. The field-calibrated EO sensor demonstrated up to 60 dB of Signal to Noise Ratio (SNR). Finally, we compared both results using the Cross Correlation Function (CCF). The schematic of the EO probe scanning system and estimation results are provided.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"3 1","pages":"469-470"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89712966","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
Nonlinear processes modeling in electron-positron substances by the methods of classical and quantum theories 用经典和量子理论方法模拟电子-正电子物质中的非线性过程
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857711
Yury D. Mozgovoi, S. A. Khritkin
{"title":"Nonlinear processes modeling in electron-positron substances by the methods of classical and quantum theories","authors":"Yury D. Mozgovoi, S. A. Khritkin","doi":"10.1109/IVEC.2014.6857711","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857711","url":null,"abstract":"The numerical simulation of nonlinear time-dependent processes of the resonant interaction condensations charges in electron-positron substance with the formation of quantum macroplasmoid in terms of classical large particles model and quantum macroscopic model of single-particle wave functions has been conducted. Unlike the point kinematic approach of quantum electrodynamics, the particles are treated as deformable clots charge.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"9 1","pages":"505-506"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72962974","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
ILC-class Marx modulator at KEK KEK的ilc级马克思调制器
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857683
M. Gaudreau, Noah Silverman, M. Kempkes, J. Casey
{"title":"ILC-class Marx modulator at KEK","authors":"M. Gaudreau, Noah Silverman, M. Kempkes, J. Casey","doi":"10.1109/IVEC.2014.6857683","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857683","url":null,"abstract":"In October 2013, Diversified Technologies, Inc. (DTI) successfully installed and began operation of a 120 kV, 120 A, 1.7 ms Marx modulator for the High Energy Accelerator Research Organization in Japan (KEK).","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"138 1","pages":"449-450"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73312718","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
Emission uniformity of the ammonium perrhenate impregnated Ni sponge oxide cathode 过铼酸铵浸渍Ni海绵氧化物阴极的发射均匀性
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857528
Xiaoxia Wang, Shikai Qi, Yanwen Liu, Jirun Luo, Qinglan Zhao, Yun Li, Qi Zhang
{"title":"Emission uniformity of the ammonium perrhenate impregnated Ni sponge oxide cathode","authors":"Xiaoxia Wang, Shikai Qi, Yanwen Liu, Jirun Luo, Qinglan Zhao, Yun Li, Qi Zhang","doi":"10.1109/IVEC.2014.6857528","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857528","url":null,"abstract":"In order to improve emission performance of the Ni sponge oxide cathodes, an ammonium perrhenate impregnated Ni Sponge Oxide Cathode has been developed by IECAS. In this paper we mainly describe the research on the emission uniformity of this cathode with the thermal electron spectrometry analysis and the work function distribution test. The test results indicates that the emission uniformity of the Ni-Re sponge oxide cathode fabricated by this liquid-solid mixing method is better than that of the conventional Ni-Re sponge oxide cathode fabricated by the solid-solid mixing method.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"14 1","pages":"139-140"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79299439","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
Highly reliable carbon nanotube field emitters for vacuum electronic devices 用于真空电子器件的高可靠性碳纳米管场发射体
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857720
Jae-Woo Kim, Sungyoul Choi, Jun-Tae Kang, Jin-Woo Jeong, S. Ahn, Yoon-Ho Song
{"title":"Highly reliable carbon nanotube field emitters for vacuum electronic devices","authors":"Jae-Woo Kim, Sungyoul Choi, Jun-Tae Kang, Jin-Woo Jeong, S. Ahn, Yoon-Ho Song","doi":"10.1109/IVEC.2014.6857720","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857720","url":null,"abstract":"We fabricated highly reliable carbon nanotube (CNT) field emitters and evaluated their performances in a harsh environment of a tiny vacuum-sealed vessel for vacuum electronic devices. The CNT paste was formulated by using a ball-milling method with optimized fillers for high-temperature endurance of the resultant field emitters. The CNT field emitters in a triode configuration showed reliable operation for over 150 h at a high current density of 0.4 A/cm2.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"16 1","pages":"523-524"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75145560","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
Simulation design of a high power CW klystron 大功率连续波速调管的仿真设计
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857639
Rui Zhang, Yong Wang
{"title":"Simulation design of a high power CW klystron","authors":"Rui Zhang, Yong Wang","doi":"10.1109/IVEC.2014.6857639","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857639","url":null,"abstract":"A new continuous-wave (CW) klystron for use in TOKAMAK is currently under development at IECAS. Numerical analysis has been carried out in order to meet all the requirements. Particular attention is paid to the electron gun and RF circuit of the tube to get excellent beam transport characteristics and high efficiency. The electron gun has a perveance of 1.0μP. The cathode load is lower than 0.7 A/cm2 with a beam current of 16A. The beam focusing system is a solenoid magnet structure. Simulation indicates that the beam trajectories have a good laminar condition with a beam-to-tunnel radial fill factor less than 0.6. The beam ripple is 9 percent of the average beam radius. The RF circuit consists of five cavities. One-dimensional large signal simulation indicates that the circuit has an efficiency of more than 57% with a saturated gain of 50dB. With an operating voltage of 63kV and a beam current of 16A, the klystron is expected to produce 580kW RF power at 5GHz.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"90 1","pages":"361-362"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75561237","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 140 GHz improved slow-wave structure based on staggered double-vane 基于交错双叶片的140 GHz改进慢波结构
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857613
Yanshuai Wang, Z. Duan, Jin Xu, Zhanliang Wang, Yanyu Wei, Y. Gong
{"title":"A 140 GHz improved slow-wave structure based on staggered double-vane","authors":"Yanshuai Wang, Z. Duan, Jin Xu, Zhanliang Wang, Yanyu Wei, Y. Gong","doi":"10.1109/IVEC.2014.6857613","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857613","url":null,"abstract":"In this paper, we have proposed a 140 GHz slow-wave structure, consisting of an improved array of half-period-staggered double-vane. This structure is suitable for the millimeter-wave sheet beam traveling-wave tubes (TWTs). Numerical results from HFSS simulations clearly demonstrate that there is the better high-frequency characteristics at frequencies from 130 to 150 GHz for the slow-wave structure.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"39 1","pages":"309-310"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80938855","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
Progress of wide bandwidth W-band 20W CW TWT 宽带w波段20W连续波行波管的研究进展
IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857549
Y. Hu, Jinjun Feng, Jingkai Liu, Jun Cai, Yinghua Du, Ruitong Dong, Ji Chen, Xiaoqing Zhang, Shijing Li, Tianyi Li, Xianping Wu
{"title":"Progress of wide bandwidth W-band 20W CW TWT","authors":"Y. Hu, Jinjun Feng, Jingkai Liu, Jun Cai, Yinghua Du, Ruitong Dong, Ji Chen, Xiaoqing Zhang, Shijing Li, Tianyi Li, Xianping Wu","doi":"10.1109/IVEC.2014.6857549","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857549","url":null,"abstract":"This paper introduced progress of W-band folded waveguide continuous-wave (CW) TWT. Over 20W output power in 9GHz bandwidth was obtained in W-band. New design thoughts enables this prototype has a much more compact size in contrast to previous 10W level product before.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"28 1","pages":"179-180"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80996542","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: 7
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