2011 IEEE Pulsed Power Conference最新文献

Improved Hybrid MOSFET/driver Switching Module for pulsed power applications 用于脉冲功率应用的改进混合MOSFET/驱动器开关模块

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191616

T. Tang, C. Burkhart

引用次数: 6

Linear Transformer Driver (LTD) research for radiographic applications 线性变压器驱动器(有限公司)研究放射成像应用

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191550

J. Leckbee, S. Cordova, B. Oliver, T. Webb, M. Toury, M. Caron, R. Rosol, B. Bui, T. Romero, D. Ziska

引用次数: 20

Design of an apparatus for optical and VUV spectroscopy of explosive emission processes 爆炸发射过程光学和VUV光谱装置的设计

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191565

J. Parsony, J. Dickens, A. Neuber, J. Walter, J. Krile, J. Vara

{"title":"Design of an apparatus for optical and VUV spectroscopy of explosive emission processes","authors":"J. Parsony, J. Dickens, A. Neuber, J. Walter, J. Krile, J. Vara","doi":"10.1109/PPC.2011.6191565","DOIUrl":"https://doi.org/10.1109/PPC.2011.6191565","url":null,"abstract":"This study focuses on the design of an experimental apparatus for optical and vacuum ultraviolet (VUV) spectroscopy of explosive emission processes at the cathode in a high power vacuum sealed tube. The system consists of a high power pulsed Nd:YAG laser with a highly tunable optical parametric oscillator (OPO, 200 to 2600 nm), a 300 kV, 80 J Marx Generator, and a triode-geometry vircator that is 6 inches in diameter and 11 inches in length. It has been observed that the explosive emission occurring at the cathode forms a plasma front propagating across the A-K gap negatively affecting the impedance of the gap thus shortening pulse length and spoiling the desired consistent low vacuum within the sealed tube. The scope of this project is to probe the plasma formed between the A-K gap to determine the species emitted off the cathode. The timing integration of each sub-system is very critical as the window for measurement is approximately 200 ns. A compact, fiber optically coupled, battery-operated, low jitter (500 ps), fast risetime (20 ns) pulse trigger generator has been designed and incorporated as the trigger source in a trigatron triggering scheme for the Marx generator. Preliminary jitter measurements of 20 to 30 ns have been seen on the fully erected Marx Generator. The intent of this paper is to discuss the details of the various sub-systems and the timing between them, enabling optical / VUV spectroscopic measurements of the explosive emission process.","PeriodicalId":331835,"journal":{"name":"2011 IEEE Pulsed Power Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120958245","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

Status of genesis a 5 MA programmable pulsed power driver 创世纪5毫安可编程脉冲功率驱动器的现状

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191605

S. Glover, F. White, P. Foster, D. Lucero, L. Schneider, K. Reed, G. Pena, J. Davis, C. Hall, R. Hickman, K. Hodge, R. Lemke, J. Lehr, D. Mcdaniel, J. Puissant, J. M. Rudys, M. Sceiford, S. J. Tullar, D. van de Valde

{"title":"Status of genesis a 5 MA programmable pulsed power driver","authors":"S. Glover, F. White, P. Foster, D. Lucero, L. Schneider, K. Reed, G. Pena, J. Davis, C. Hall, R. Hickman, K. Hodge, R. Lemke, J. Lehr, D. Mcdaniel, J. Puissant, J. M. Rudys, M. Sceiford, S. J. Tullar, D. van de Valde","doi":"10.1109/PPC.2011.6191605","DOIUrl":"https://doi.org/10.1109/PPC.2011.6191605","url":null,"abstract":"Genesis is a compact pulsed power platform designed by Sandia National Laboratories to generate precision shaped multi-MA current waves with a rise time of 200–500 ns. In this system, two hundred and forty, 200 kV, 80 kA modules are selectively triggered to produce 280 kbar of magnetic pressure (>500 kbar pressure in high Z materials) in a stripline load for dynamic materials properties research. This new capability incorporates the use of solid dielectrics to reduce system inductance and size, programmable current shaping, and gas switches that must perform over a large range of operating conditions. Research has continued on this technology base with a focus on demonstrating the integrated performance of key concepts into a Genesis-like prototype called Protogen. Protogen measures approximately 1.4 m by 1.4 m and is designed to hold twelve Genesis modules. A fixed inductance load will allow rep-rate operation for component reliability and system lifetime experiments at the extreme electric field operating conditions expected in Genesis.","PeriodicalId":331835,"journal":{"name":"2011 IEEE Pulsed Power Conference","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127330142","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

Spectroscopic measurements in the post-hole convolute on Sandia's Z-Machine (invited) Sandia Z-Machine上孔后卷积的光谱测量(特邀)

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191564

M. Gomez, M. Cuneo, R. Mcbride, G. Rochau, D. Ampleford, J. Bailey, A. Edens, B. Jones, M. Jones, M. Lopez, M. Savage, D. Sinars, W. Stygar, R. Gilgenbach

{"title":"Spectroscopic measurements in the post-hole convolute on Sandia's Z-Machine (invited)","authors":"M. Gomez, M. Cuneo, R. Mcbride, G. Rochau, D. Ampleford, J. Bailey, A. Edens, B. Jones, M. Jones, M. Lopez, M. Savage, D. Sinars, W. Stygar, R. Gilgenbach","doi":"10.1109/PPC.2011.6191564","DOIUrl":"https://doi.org/10.1109/PPC.2011.6191564","url":null,"abstract":"Pulsed power is a key driver for high energy density (HED) science. The Z-Machine is the world's largest pulsed power driver, and as such is one of the foremost platforms for HED science. The double post-hole convolute current adder is a critical element in low impedance, multi-module pulsed power device design. Post-refurbishment, the current loss in the convolute has reached as high as 5 MA (20% of the MITL current). Measurements of the plasma forming in this region will lead to a better understanding of the losses, and may help with a redesign of the system. Spectroscopic measurements of the convolute show strong continuum emission with absorption features. Most notably we observe the hydrogen H-alpha at 6563 Å. Lithium was introduced into the convolute as a tracer; this experiment put upper and lower bounds on the axial position of the observed continuum emitter, (located in the upper post-hole). Measurements of the location of continuum emission as a function of time indicate that plasma travels from cathode to anode with an apparent velocity of greater than 7 cm/μs.","PeriodicalId":331835,"journal":{"name":"2011 IEEE Pulsed Power Conference","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125184609","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

Controlling feed electron flow in MITL-driven radiographic diodes mitl驱动的射线照相二极管的进给电子流控制

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191531

D. Seidel, T. Pointon, B. Oliver

引用次数: 1

Recent upgrade of the klystron modulator at SLAC SLAC速调管调制器的最新升级

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191621

M. Nguyen, C. Burkhart, B. Lam, B. Morris

{"title":"Recent upgrade of the klystron modulator at SLAC","authors":"M. Nguyen, C. Burkhart, B. Lam, B. Morris","doi":"10.1109/PPC.2011.6191621","DOIUrl":"https://doi.org/10.1109/PPC.2011.6191621","url":null,"abstract":"The SLAC National Accelerator Laboratory employs 244 klystron modulators on its two-mile-long linear accelerator that has been operational since the early days of the SLAC establishment in the sixties [1]. Each of these original modulators was designed to provide 250 kV, 262 A and 3.5 µS at up to 360 pps using an inductance-capacitance resonant charging system, a modified type-E pulse-forming network (PFN), and a pulse transformer. The modulator internal control comprised of large step-start resistor-contactors, vacuum-tube amplifiers, and 120 Vac relays for logical signals. A major, power-component-only upgrade, which began in 1983 to accommodate the required beam energy of the SLAC Linear Collider (SLC) project, raised the modulator peak output capacity to 360 kV, 420 A and 5.0 µS at a reduced pulse repetition rate of 120 pps [2]. In an effort to improve safety, performance, reliability and maintainability of the modulator, this recent upgrade focuses on the remaining three-phase AC power input and modulator controls. The upgrade includes the utilization of primary SCR phase control rectifiers, integrated fault protection and voltage regulation circuitries, and programmable logic controllers (PLC) - with an emphasis on component physical layouts for safety and maintainability concerns. In this paper, we will describe the design and implementation of each upgraded component in the modulator control system. We will also report the testing and present status of the modified modulators.","PeriodicalId":331835,"journal":{"name":"2011 IEEE Pulsed Power Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126167376","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

Attempt to a non-destructive Single Event Burnout test of Fast High Current Thyristors 快速大电流晶闸管非破坏性单事件烧断试验的尝试

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191515

V. Senaj, L. Ducimetière

引用次数: 1

Modeling of a solid-state Marx generator with parasitic capacitances for optimization studies 带寄生电容的固态马克思发生器的建模及优化研究

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191627

H. Canacsinh, L. Redondo, F. F. Silva, E. Schamiloglu

引用次数: 2

Toluene decomposition using nano-seconds pulsed discharge 利用纳秒脉冲放电分解甲苯

2011 IEEE Pulsed Power Conference Pub Date : 2011-06-19 DOI: 10.1109/PPC.2011.6191584

Y. Araki, D. Wang, T. Namihira, H. Akiyama

{"title":"Toluene decomposition using nano-seconds pulsed discharge","authors":"Y. Araki, D. Wang, T. Namihira, H. Akiyama","doi":"10.1109/PPC.2011.6191584","DOIUrl":"https://doi.org/10.1109/PPC.2011.6191584","url":null,"abstract":"Pulsed streamer discharge plasma which is one of the non-thermal plasmas has been used to generate ozone and to treat exhaust gases. In our previous studies, it is found that a pulse duration of applied voltage has a strong influence on the energy efficiency of exhaust gas treatment and ozone generation. Therefore the development of a shorter pulse generator is of paramount importance for practical applications. The higher yield ozone generation and higher efficiency exhaust gas treatment using the developed nano-seconds (ns) pulsed generator having 5 ns of duration have been demonstrated. In this work, toluene decomposition using ns pulsed generator were investigated. The dependence of toluene removal ratio on ambient gases which are nitrogen, air, and oxygen and its by-products identification were carried out. As the results, the toluene removal ratio reach the highest in case of oxygen ambient gas, and in case of all of ambient gases, carbon monoxide, carbon dioxide, and formic acid were generated as by-products. In the dependence of toluene removal ratio on the peak of applied voltage, toluene removal ratio increased with its increasing the peak of applied voltage. In the case of 50 kV of applied voltage with air ambient gas, all of toluene molecules were decomposed.","PeriodicalId":331835,"journal":{"name":"2011 IEEE Pulsed Power Conference","volume":"226 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121861645","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