2005 IEEE Pulsed Power Conference最新文献

{"title":"Status of the Z Refurbishment Project (ZR) at Sandia National Laboratories","authors":"E. Weinbrecht, D. Bloomquist, D. Mcdaniel, D. Tabor, J. W. Weed, T. Faturos, G. Mckee, P. J. Warner","doi":"10.1109/PPPS.2007.4345942","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4345942","url":null,"abstract":"Sandia National Laboratories' Z Refurbishment (ZR) Project formally began in August 2002 to increase the Z Accelerator's utilization by providing the capability to perform more shots, improve precision and pulse shape variability, increase delivered current, and accomplish the improvements with minimal disruption to Z's ongoing programs. A project overview was provided at the 14th International Pulsed Power Conference in 2003 [1], This paper provides an update of the project including architectural changes over the past two years, timeframe for completion, and overall design and fabrication status.","PeriodicalId":200159,"journal":{"name":"2005 IEEE Pulsed Power Conference","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127955612","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}

{"title":"Photon Initiated - Marxed Modulators","authors":"K. McDonald, D. Weidenheimer, D. Giorgi","doi":"10.1109/modsym.2006.365260","DOIUrl":"https://doi.org/10.1109/modsym.2006.365260","url":null,"abstract":"Sci-Eng solutions is developing compact, robust, and efficient megavolt class photon initiated-Marxed modulators (PIMM's) designed to directly drive klystrons that are intended to satisfy the demanding requirements for future linear accelerators. These modulators are equally applicable for high power microwave applications pertinent to the directed energy arena. Photon-initiated switches provide the versatility of designing Marxed modulators that can efficiently drive a variety of sources. The PIMM topology promises to provide perhaps the most compact and cost effective modulator design possible, while exhibiting superb versatility and reliability.","PeriodicalId":200159,"journal":{"name":"2005 IEEE Pulsed Power Conference","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116758294","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}

{"title":"Experiments with Multi-Wire Liners at Sarmat Facility","authors":"V. Selemir, P. B. Repin, L. Pikulin, A. Volkov, A. Orlov, O. Tatsenko, A. N. Moiseenko, V. T. Selyavsky, P. S. Dydykin, E. V. Grebenev, V. F. Bukharov, E. A. Ryaslov, V. P. Kudryavtsev, D. V. Kotelnikov, P. Duday","doi":"10.1109/PPC.2005.300599","DOIUrl":"https://doi.org/10.1109/PPC.2005.300599","url":null,"abstract":"In the paper we report on creation of capacitive facility SarMAT, providing a current up to 2 MA in a load at rise time of ~1 mus. The facility is intended for laboratory development of technologies and methods used in experiments on current implosion of cylindrical liners, powered from magneto-cumulative energy source. A series of experiments with multi-wire liners both of classical and a number of original constructions, was held at the facility. Results of these experiments are presented in the paper.","PeriodicalId":200159,"journal":{"name":"2005 IEEE Pulsed Power Conference","volume":"115 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120861632","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}

{"title":"Development of gas jet type Z-pinch EUV light source for lithography","authors":"L. Song, K. Iwata, Y. Homma, S. Mohanty, M. Watanabe, T. Kawamura, A. Okino, K. Yasuoka, K. Horioka, E. Hotta","doi":"10.1109/PPC.2005.300482","DOIUrl":"https://doi.org/10.1109/PPC.2005.300482","url":null,"abstract":"A new gas jet type Z-pinch source of 13.5 nm radiation, which has the characteristics of a gas jet electrodes configuration and the scheme for radial extraction of extreme ultraviolet (EUV) light, has been developed. The gas jet type Z-pinch discharge has two nozzles and two diffusers. The EUV beam is collected from the side of pinch plasma, generated in between the inner nozzle and corresponding diffuser, at the radial direction. The design feature of the gas jet type Z-pinch source accommodates the cylindrical annular shape helium (He) gas curtain that is produced by the outer nozzle. The dimension of pinch plasma is FWHM diameter of 0.07 mm and length of 0.34 mm. The EUV output in 2 % bandwidth at 13.5 nm is 0.78 mJ/sr/pulse.","PeriodicalId":200159,"journal":{"name":"2005 IEEE Pulsed Power Conference","volume":"299 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120932416","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}

{"title":"Fiber-Optic Controlled PCSS Triggers for High Voltage Pulsed Power Switches","authors":"F. Zutavern, K. Reed, S. Glover, A. Mar, M. Ruebush, M. L. Horry, M. Swalby, J. Alexander, T.L. Smith","doi":"10.1109/PPC.2005.300785","DOIUrl":"https://doi.org/10.1109/PPC.2005.300785","url":null,"abstract":"Triggers for high voltage (HV) switches have always been critical components for reliable, efficient pulsed power systems because they control the timing synchronization and amplitude variation of multiple pulse forming lines that combine to produce the total system output pulse. In pulsed power systems of the future, the role of trigger systems are even more critical as they trigger more components and produce shaped-pulses by independent timing of individual switches or switch groups. Conventional trigger systems require high voltage trigger cables or line-of-sight optics that complicate design, demand space, and require extensive maintenance. With electrical triggers, large diameter, high voltage transmission line cables must be fed through high field regions. With optical triggers, line-of-sight optics must focus high energy laser beams to the interior of the switches with clean, rigidly-mounted, shock- withstanding optics. This paper reports on efforts to develop fiber- optically triggered photoconductive semiconductor switches (PCSS) to trigger high voltage switches with improved precision and eliminate the need for large- diameter trigger cables or line-of-sight optics. These triggers simplify design because their optical-isolation allows them to \"float\" with the switches that they trigger and have truly independent EMP-free timing control over 200 micron diameter optical fibers. They improve the performance of prime power switches, diverters, and diagnostics because their low-jitter sub-nanosecond rise times are more precise and more easily adjusted than conventional trigger sources. For pulse charged switches, the PCSS triggers can generally derive their trigger energy from the stray fields of the high voltage switch. Test results will be presented that have demonstrated 100 ps r-m-s jitter from a 40 kV, 500 ps rise time, PCSS- triggered 300 kV trigatron gas gap. PCSS design requirements, switching properties, and trade-offs for building high voltage trigger systems will also be described based on many previous experiments with PCSS technology. Results from PCSS Blumlein and PCSS capacitive discharge pulsers will be discussed along with the designs to use these pulsers to trigger both DC and pulse charged high voltage switches.","PeriodicalId":200159,"journal":{"name":"2005 IEEE Pulsed Power Conference","volume":"21 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":"125295027","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}

{"title":"Development of Long-Charge Inductive Storage Systems at Soreq NRC","authors":"A. Pokryvailo","doi":"10.1109/PPC.2005.300499","DOIUrl":"https://doi.org/10.1109/PPC.2005.300499","url":null,"abstract":"A broad overview of long-charge inductive storage systems technology based on more than 10 years development experience at Soreq NRC is presented. Key issues are addressed: a) System architecture; b) Essential components, with an emphasis on repetitive opening switch and coil screening; c) Efficiency of coupling to various loads, such as ET and railgun, exploding wires, etc. d) Compaction issues (impact of high-power density batteries is detailed in an accompanying paper). Experimental results accumulated with a laboratory demonstrator are reviewed. A detailed description of hybrid opening switch is given. Further development is indicated.","PeriodicalId":200159,"journal":{"name":"2005 IEEE Pulsed Power Conference","volume":"5 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":"115028464","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}

{"title":"Loss Tape-Helix Analysis of Slow-Wave Structures","authors":"D. T. Lopes, C. Motta","doi":"10.1109/PPC.2005.300565","DOIUrl":"https://doi.org/10.1109/PPC.2005.300565","url":null,"abstract":"In this work it is reported the results of a slow-wave structure (SWS) loss analysis using the tape-helix model instead of the simpler sheath-helix model in order to consider the space-harmonic effects. The analysis is made rigorous by removing the usual approximation of considering the radial propagation constant to be the same in the different structure regions. This paper presents not only the effect on loss of the dielectric support rods for the helix but also the functional variations of structure loss with frequency, helix radius, helix pitch, helix width, circular guide-to-helix diameter ratio, and helix and guide resistivities. All results shown in this paper are in complete agreement with those reported in the literature.","PeriodicalId":200159,"journal":{"name":"2005 IEEE Pulsed Power Conference","volume":"45 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":"116087242","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}

{"title":"Subnanosecond Breakdown in Argon at High Overvoltages","authors":"H. Krompholz, L. Hatfield, A. Neuber, D. Hemmert, K. Kohl, J. Chaparro","doi":"10.1109/PPC.2005.300679","DOIUrl":"https://doi.org/10.1109/PPC.2005.300679","url":null,"abstract":"Volume breakdown and surface flashover in quasi homogeneous applied fields in 10-5 to 600 torr argon are investigated, using voltage pulses with 150 ps risetime, < 1 ns duration, and up to 150 kV amplitude into a matched load. The test system consists of a transmission line, a transition to a biconical section, and a test gap, with gap distances of one to several mm. The arrangement on the other side of the gap is symmetrical. An improved system, with oil-filled transmission lines and lens between coax and biconical section to minimize pulse distortion, is being constructed. Diagnostics include fast capacitive voltage dividers, which allow to determine voltage waveforms in the gap, and conduction current waveforms through the gap. X-ray diagnostics uses a scintillator- photomultiplier combination with different absorber foils yielding coarse spectral resolution. Optical diagnostics to obtain information about the discharge channel dynamics is in preparation. Breakdown delay times, and e-folding time constants for the conduction current during the initial breakdown phase, are on the order of 100-400 ps, with minima in the range of several 10 torr. X-ray emission extends to pressures > 100 torr, indicating the role of runaway electrons during breakdown. Maximum X-ray emission coincides with fastest current risetimes at several 10 torr, which is probably related to an efficient feedback mechanism from gaseous amplification to field enhanced electron emission from the cathode.","PeriodicalId":200159,"journal":{"name":"2005 IEEE Pulsed Power Conference","volume":"112 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":"114425061","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}

{"title":"Development of Repetitive Pulsed Power Generators Using Power Semiconductor Devices","authors":"Weihua Jiang, N. Oshima, T. Yokoo, K. Yatsui, K. Takayama, M. Wake, N. Shimizu, A. Tokuchi","doi":"10.1109/PPC.2005.300545","DOIUrl":"https://doi.org/10.1109/PPC.2005.300545","url":null,"abstract":"Power semiconductor devices have been used in development of various pulsed power generators for industrial applications. A repetitive pulsed high-voltage modulator using power MOSFETs has been developed for accelerator applications. It is capable of high-speed switching of 2kV at repetition rate of 1 MHz. This modulator, operating in continuous mode at average power level of 30 kW, has played an important role in the experimental demonstration of Induction Synchrotron. In the same time, SIThy is also tested for the same application since it has higher power capability than MOSFET. Initial experiments have demonstrated 1-MHz operation of SIThy at 2kV in burst mode. A pulsed high-voltage generator using SIThy has been developed for applications in flue-gas treatment. This generator uses a newly developed inductive-energy-storage circuit to achieve both output-voltage multiplication and pulse-width compression. It is very compact and it needs a 12-V (DC) battery as the only power supply to give output of 12 kV with pulse width of 100 ns at repetition rate of 2 kHz in continuous mode. A pulsed high-current modulator has been developed for extreme-ultraviolet generation. It uses IGBTs as the main switch and employs magnetic-pulse-compression to achieve pulsed high current. The output reaches 40 kA with pulse width of 240 ns while operating at repetition rate of 1 kHz in burst mode. This modulator is used in light source development for next-generation lithography. Semiconductor opening switches (SOS) are used in pulsed power generators for excimer laser pumping and flue-gas treatment. These developments are mostly international collaboration with Russian scientists, while efforts are being made to develop SOS devices in Japan.","PeriodicalId":200159,"journal":{"name":"2005 IEEE Pulsed Power Conference","volume":"3 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":"122200413","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}

{"title":"Design of Explosive-Driven Ferroelectric Pulse Generators with Outputs Exceeding 200 kV","authors":"S. Holt, J. Dickens, J. Walter, S. Calico","doi":"10.1109/PPC.2005.300685","DOIUrl":"https://doi.org/10.1109/PPC.2005.300685","url":null,"abstract":"The design and testing of explosive-driven ferroelectric generators (FEGs) with output voltages exceeding 200 kV is presented. The generator design is aimed at achieving high voltages in a compact device by explosively compressing stacks of ferroelectric ceramic discs. The ferroelectric used in this application is EC -64 lead zirconate- titanate (PZT), a hard ferroelectric ceramic with a high dielectric constant and a good piezoelectric coupling coefficient in the direction of polarization. The pressure impulse is generated by high explosive detonating cord and travels longitudinally along the polarization vector in the PZT. The effect of variations in the rise-time, width, and magnitude of the pressure pulse on the peak voltage has been experimentally studied by modifying the ferroelectric stack and explosive driver geometries. Different dielectric insulations are experimentally evaluated for good compatibility with the ferroelectrics and maximum hold-off voltage.","PeriodicalId":200159,"journal":{"name":"2005 IEEE Pulsed Power Conference","volume":"81 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":"116737402","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}