IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference最新文献_第8页

Development of big-size impregnated scandate dispenser cathode 大尺寸浸渍钪阴极的研制

IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857490

Hui Wang, Zhiqiang Yu, Wensheng Shao, Ji Li, Y. Men, A. Yang, L. Xia, Jinshui Shi

引用次数: 1

Analysis of a planar inter-digital slow-wave structure 平面数字间慢波结构分析

IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857561

M. Sumathy, L. Christie, S. K. Datta, L. Kumar

引用次数: 0

Design of a low voltage W-band gyro-TWT amplifier 低压w波段陀螺行波管放大器的设计

IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857661

Zhiliang Li, Jinjun Feng, Ben-tian Liu, E. Wang, Xu Zeng, Yang Zhang, Hao Sun, T. Yan

引用次数: 2

Plenary Talk: Advanced high frequency acceleration 全体会议发言:先进的高频加速

IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857460

Sami G. Tantawi

{"title":"Plenary Talk: Advanced high frequency acceleration","authors":"Sami G. Tantawi","doi":"10.1109/IVEC.2014.6857460","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857460","url":null,"abstract":"Summary form only given. During the last few years, we have successfully gained a qualitative understanding of the basic physics of breakdown phenomena in high vacuum RF structures. We have been able to use this knowledge of geometrical effects and material properties to develop accelerator structures with gradients well above the state of the art. It has now been demonstrated that room temperature linacs can operate at gradients up to 175 MV/m - six times the gradient of the best superconducting structures. However, operation at these high gradients requires extremely high power RF sources, which with current technology, are not very cost-effective. These problems will become even more pronounced with the next generation of high gradient structures. To push the gradient further, the scaling laws we developed would require higher frequency, shorter filling time and equivalently very short pulses. Initial investigation shows the possibility of a 1 GV/m structure at W-band that operates for only 3 ns. The next stage of development must address efficient production and utilization of RF power for linacs as well as high gradient structure technologies. This is not a simple task. The technologies used for high power RF sources have a long history and appear to be mature, with only minor improvements likely. We need to create a paradigm shift in the art. To this end, we should cross-fertilize the art from other disciplines, utilize the unique characteristics of the linacs to create specialized sources, and conduct active research on all fronts for energy recovery at every stage, from wall plug to accelerator structure. We will present a vision for this required research and development.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"44 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84563828","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

System study using injection phase locked magnetron as an alternative source for superconducting radio frequency accelerator 注入锁相磁控管作为超导射频加速器替代源的系统研究

IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857680

Haipeng Wang, T. Plawski, R. Rimmer, A. Dexter, I. Tahir, M. Neubauer, A. Dudas

{"title":"System study using injection phase locked magnetron as an alternative source for superconducting radio frequency accelerator","authors":"Haipeng Wang, T. Plawski, R. Rimmer, A. Dexter, I. Tahir, M. Neubauer, A. Dudas","doi":"10.1109/IVEC.2014.6857680","DOIUrl":"https://doi.org/10.1109/IVEC.2014.6857680","url":null,"abstract":"As a drop-in replacement of Continuous Electron Beam Accelerator Facility (CEBAF) 5kW CW klystron system, a 1497MHz, high efficiency magnetron using injection phase lock [1] and slow amplitude variation using magnetic field trimming and anode voltage modulation has been studied systematically using MatLab/Simulink simulations. The magnetron model is based the characteristics of experiment and manufacture chart on a 2.45GHz cooker type CW magnetron. To achieve high performance of a superconducting radio frequency (SRF) acceleration cavity with an electron beam loading, the magnetron's low level radio frequency (LLRF) control has been studied in two lock loops. In the frequency lock loop, the characterized anode V-I curve, output power (the tube electronic efficiency) and frequency dependence to the anode current (pushing by Vaughan model) and the Rieke diagram (frequency pulling by the reactive load) are simulated. The magnetic field B and anode voltage V in Hartree condition are satisfied and the effect of filament heater power to the frequency lock is also included. In the phase lock loop, the Adler equation governing injection phase stability is included in this study. The control of the magnet trim-coil power-supply and of the anode voltage modulation-switching power-supply has been also simulated to achieve the amplitude modulation. The result of linear responses to the amplitude and phase of SRF cavity will be presented in this paper. The requirement of LLRF control will be given by this result.","PeriodicalId":88890,"journal":{"name":"IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference","volume":"101 1","pages":"443-444"},"PeriodicalIF":0.0,"publicationDate":"2014-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84827838","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

Development of an X-band 800W pulsed mini-TWT for active phased array radar modules 用于有源相控阵雷达模块的x波段800W脉冲微型行波管的研制

IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857509

T. Munehiro, Junichi Kobayashi, J. Matsuoka, Mitsuru Yoshida, Satoshi Kainuma, Y. Ueda

引用次数: 6

A plane TWT model on one impedance electrode 一个阻抗电极上的平面行波管模型

IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857562

A. Yelizarov, Y. Pchelnikov

引用次数: 0

Application of absorbers with frequency-dependent attenuation in powerful broadband traveling wave tubes 频率相关衰减吸波器在强宽带行波管中的应用

IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857594

A. Danilov, E. M. Il'ina

引用次数: 1

Perovskite oxides: New candidate materials for low work function electron emitters 钙钛矿氧化物:低功函数电子发射器的新候选材料

IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857525

R. Jacobs, D. Morgan, J. Booske

引用次数: 0

Stability analysis of W-band extended interaction output cavity w波段扩展相互作用输出腔的稳定性分析

IEEE International Vacuum Electronics Conference. International Vacuum Electronics Conference Pub Date : 2014-04-22 DOI: 10.1109/IVEC.2014.6857630

Yong Zhong, Yong Wang

引用次数: 2