2005 IEEE Pulsed Power Conference最新文献_第7页

Electron Beam Propagation in a PPM System PPM系统中的电子束传播

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300629

E. A. Périgo, R. Faria, J. Barroso, C. Motta

引用次数: 0

Coordinated Diagnostics for a Hydro Experiment Driver Hydro实验驱动程序的协调诊断

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300724

J. Williams, C. Y. Tom, E. Peterson, J. Stokes, W. Broste

{"title":"Coordinated Diagnostics for a Hydro Experiment Driver","authors":"J. Williams, C. Y. Tom, E. Peterson, J. Stokes, W. Broste","doi":"10.1109/PPC.2005.300724","DOIUrl":"https://doi.org/10.1109/PPC.2005.300724","url":null,"abstract":"Hydrodynamic testing constitutes a large part of the Stockpile Stewardship program. The increasingly complex modeling of hydro phenomena requires precise information on the pulsed-power mechanisms propelling the imploding driver shell. For Atlas, a large pulsed-power machine, this means accurately recording the current waveform delivered to the target. Bechtel Nevada and Los Alamos National Laboratory diagnostic personnel have continued to improve the diagnostic suite that provides this vital information for Atlas experiments. Recent efforts to refine the accuracy and expand the dynamic range of magnetic and electric field sensors used to monitor Atlas performance are described in this paper. An optical loop for a Faraday rotation diagnostic records the total current delivered to the load with greater accuracy and less sensitivity to electromagnetic interference than the B-dot sensors. Rogowski loops provide information on relative output from individual pulsed power units. Optical switch monitors provide high- resolution simultaneity measurements. A variety of inductive loop sensors (B-dots) are used to assess current symmetry and simultaneity at varying distances from and within the central load assembly. B-dots placed in the transmission lines reveal simultaneity problems by picking up current reversal down a late-firing line, and can be used to identify the physical location of breakdowns. Load B-dots are better able to record local current transients that are blurred by the spatially averaging Faraday sensor. Techniques used to reduce spurious signals in the typically hostile pulsed-power environment are discussed and examples of results presented.","PeriodicalId":200159,"journal":{"name":"2005 IEEE Pulsed Power Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125611906","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

Fiber-Optic Systems at the Explosive Pulsed Power Test Facility at AFRL AFRL爆炸脉冲功率测试设施的光纤系统

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300725

S. Coffey, A. Brown, B. Guffey, Tereza Cavazos, D. Gale, J. Parker, C. Roth, D. Sandoval, W. Sommars, D. Chama, F. Lehr, G. Kiuttu

引用次数: 1

Bubble Dynamics and Channel Formation for Cathode Initiated Discharges in Transformer Oil 变压器油阴极放电的气泡动力学和通道形成

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300578

M. Cevallos, M. Butcher, J. Dickens, A. Neuber, H. Krompholz

{"title":"Bubble Dynamics and Channel Formation for Cathode Initiated Discharges in Transformer Oil","authors":"M. Cevallos, M. Butcher, J. Dickens, A. Neuber, H. Krompholz","doi":"10.1109/PPC.2005.300578","DOIUrl":"https://doi.org/10.1109/PPC.2005.300578","url":null,"abstract":"The development of cathode initiated low density channel formation and propagation leading to self breakdown in transformer oil is investigated using high speed electrical and optical diagnostics in a coaxial system with a point/plane axial discharge at various hydrostatic pressures. A cathode initiated channel formation and propagation model based upon single bubble dynamics has been presented by Kattan [1]. Experiments based on high-speed shadowgraphy were conducted to decide if the principles that govern single bubble dynamics could be applied to cathode initiated channel formation. These experiments show bubble motion away from the cathode, with separation velocities on the order of 10's m/s. This separation is similar for single bubbles generated at the cathode and for bubble chains developing into low-density channels. Lifetimes of these channels are recorded and show good correlation with the Rayleigh model [2] used to predict lifetimes of single bubbles. Experiments at reduced hydrostatic pressure reveal a critical pressure below which low density channel expansion occurs, further corroborating the presence of a gas phase. Finally, the pressure dependence of the breakdown voltage due to the expansion of the low density channels is examined and a model for this dependence is presented. The experiments conducted confirm the presence of a gas phase channel, its correlation with single bubble dynamics, and its importance to final breakdown.","PeriodicalId":200159,"journal":{"name":"2005 IEEE Pulsed Power Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133574610","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

Pulsed Power Switching of a 4 MM × 4 MM SIC Thyristor 4mm × 4mm SIC晶闸管的脉冲功率开关

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300437

H. O’Brien, W. Shaheen, S. Bayne

引用次数: 11

Investigation on a Novel Multiple-Switch Pulsed Power Technology 一种新型多开关脉冲电源技术研究

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300507

Z. Liu, K. Yan, A. Pemen, E. Heesch, G. Winands

引用次数: 1

Tesla Coil Design for Electron Gun Application 电子枪应用的特斯拉线圈设计

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300508

M. Paraliev, C. Gough, S. Ivkovic

引用次数: 10

Optimization of Pulsed Current Profile for Magnetic Field Trapping in High TC Superconductors 高TC超导体磁场捕获脉冲电流分布图的优化

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300776

Lihua Chen, F.Z. Peng, Y. Cha, H. Claus, B. Veal

引用次数: 0

Progress in Development and Applications of Pulsed Power Devices at the University of Texas at Dallas 脉冲功率器件的发展和应用进展，美国德克萨斯大学达拉斯分校

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300635

F. Davanloo, C. B. Collins, F. J. Agee

引用次数: 1

The Development of Circuit Models for ZR ZR电路模型的开发

2005 IEEE Pulsed Power Conference Pub Date : 2005-06-13 DOI: 10.1109/PPC.2005.300758

C. Harjes, J. Corley

引用次数: 0