Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop.最新文献_第4页

The generator of high power current pulses sequence on the base high current diodes with virtual cathode hysteresis 大功率电流脉冲序列发生器在具有虚阴极滞后的基极大电流二极管上产生

Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop. Pub Date : 2002-06-30 DOI: 10.1109/MODSYM.2002.1189513

A. Paschenko, I. Shapoval

引用次数: 0

Methods for reducing the forward voltage drop in pseudospark switches 减小伪火花开关正向压降的方法

Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop. Pub Date : 2002-06-30 DOI: 10.1109/MODSYM.2002.1189519

V. Bochkov, V. Dyagilev, V.G. Ushich, O. B. Frants, Y. Korolev, I. A. Shemyakin, V. G. Geyman, R.V. Ivashov, N. Landl

{"title":"Methods for reducing the forward voltage drop in pseudospark switches","authors":"V. Bochkov, V. Dyagilev, V.G. Ushich, O. B. Frants, Y. Korolev, I. A. Shemyakin, V. G. Geyman, R.V. Ivashov, N. Landl","doi":"10.1109/MODSYM.2002.1189519","DOIUrl":"https://doi.org/10.1109/MODSYM.2002.1189519","url":null,"abstract":"The paper describes the methods, which can be used in the pseudospark switches to decrease the forward voltage drop in initial glow stages of the discharge burning. The main direction of reducing the discharge burning voltage is a use of a special design of the electrode system and a special design of the cathode cavity. In the TPI switches, a so-called high-emissivity cylinder is placed at the bottom of the cathode cavity. The basic component of the cylinder is the tungsten powder (90 percent) to which aluminium oxide and caesium carbonate are added. Thus, this composite material contains caesium, which plays the principal part in decreasing the discharge burning voltage. Correspondingly, the decrease in the forward voltage drop allows the TPI switches to commute the anode voltage starting from 1 kV. In the TDI switches an idea of artificial initiation of the cathode spot is used. This can be achieved due to a special trigger circuit. Then the forward voltage drop is decreased to 200-300 V.","PeriodicalId":339166,"journal":{"name":"Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop.","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116603879","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

Design and testing of a compact sub-GW, subnanosecond pulser 小型亚毫瓦、亚纳秒脉冲发生器的设计与测试

Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop. Pub Date : 2002-06-30 DOI: 10.1109/MODSYM.2002.1189436

A. Pokryvailo, Y. Yankelevich, M. Shapira

引用次数: 4

Rapid capacitor charger 快速电容器充电器

Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop. Pub Date : 2002-06-30 DOI: 10.1109/MODSYM.2002.1189437

M. Giesselmann, T. Heeren

引用次数: 17

High power microwave sources: where do we go from here? 高功率微波源:我们将何去何从?

Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop. Pub Date : 2002-06-30 DOI: 10.1109/MODSYM.2002.1189571

E. Schamiloglu

引用次数: 7

A novel type of power picosecond semiconductor switches based on tunneling-assisted impact ionization fronts 一种基于隧道辅助冲击电离前沿的新型功率皮秒半导体开关

Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop. Pub Date : 2002-06-30 DOI: 10.1109/MODSYM.2002.1189510

P. Rodin, U. Ebert, W. Hundsdorfer, I. Grekhov

引用次数: 3

Repetitive pulse application of self-healing high voltage capacitors 自愈高压电容器的重复脉冲应用

Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop. Pub Date : 2002-06-30 DOI: 10.1109/MODSYM.2002.1189558

J. Ennis, F. Macdougall, R. Cooper, J. Bates

{"title":"Repetitive pulse application of self-healing high voltage capacitors","authors":"J. Ennis, F. Macdougall, R. Cooper, J. Bates","doi":"10.1109/MODSYM.2002.1189558","DOIUrl":"https://doi.org/10.1109/MODSYM.2002.1189558","url":null,"abstract":"In the last fifteen years, self-healing high voltage capacitors have become standard technology for single-shot and low repetition rate (<1 shot/minute) applications in R&D environments, such as inertial confinement fusion, electromagnetic launchers, electrochemical guns, high field magnet facilities, etc. Such capacitors offer higher energy density and/or longer life and higher reliability in many applications. Standard self-healing capacitors, built with vapor-deposited metallized electrodes, have limited ability to carry both peak pulse and continuous RMS (root mean square) currents, generate more heat than discrete foil capacitors, and have lower thermal conductivity for heat dissipation. For these reasons, many pulse power applications have been unable to utilize self-healing technology. For example, moderate to high repetition rate (/spl ges/10 Hz), high voltage capacitors built today are generally not of the self-healing type due to the higher energy losses and poorer thermal conductivity of metallized electrode capacitors. This results in large thermal gradients and overheating. Instead, such capacitors are still manufactured using discrete foil electrodes, which provide excellent electrical and thermal conductivity. The economic and technical benefits of self-healing capacitors continue to drive research and development to expand their operational envelope. Areas of research include \"hybrid\" electrode systems, integrated cooling, segmented electrodes, and higher temperature dielectrics. This paper will explore the application of self-healing capacitor technologies to repetitive pulse power systems. Present status of the technology will be described and future performance improvements will be projected.","PeriodicalId":339166,"journal":{"name":"Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop.","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125937013","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: 23

High energy pulse modulator for microwave tube applications 微波管用高能脉冲调制器

Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop. Pub Date : 2002-06-30 DOI: 10.1109/MODSYM.2002.1189461

R. Richardson, D. Judd, B. Wenham

引用次数: 2

An overview of electron beam decontamination technology and applications 电子束净化技术及其应用综述

Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop. Pub Date : 2002-06-30 DOI: 10.1109/MODSYM.2002.1189422

B. Turman, R. Kaye, J. A. Jacobs

{"title":"An overview of electron beam decontamination technology and applications","authors":"B. Turman, R. Kaye, J. A. Jacobs","doi":"10.1109/MODSYM.2002.1189422","DOIUrl":"https://doi.org/10.1109/MODSYM.2002.1189422","url":null,"abstract":"High-energy radiation is an effective means of decontamination, including sterilization, sanitization, and pasteurization. The principal sources are radioisotope and machine-generated radiation. Radioisotope sources use radioactive materials such as /sup 60/Co or /sup 137/Cs, which produce gamma radiation from nuclear decay. The inventory of radioactive material is typically 1 MegaCurie or more for a high-volume radioisotope irradiator. In contrast, the machine-generated radiation is obtained from an electrical power source that first produces a high-energy electron beam, to be used in a direct e-beam mode or in an indirect X-ray mode. The advantages of the machine-generated radiation are related to the lack of radioactive materials inventory, the ability to configure the radiation output to optimize coupling into the product, the reliability of modern industrial accelerators, and the relative simplicity of engineering the accelerator to the irradiator facility. The choice between the direct electron beam and indirect X-ray conversion systems is typically made as a trade-off between efficiency and product penetration distance. The efficiency of X-ray conversion of electron energy to total radiation is about 18 percent at 10 MeV. The major advantage of the X-ray process is the longer penetration distance, a factor of about 5 greater than that for the direct electron beam for typical treatment conditions. Accelerator technology and irradiation applications will be discussed, including food pasteurization, medical sterilization, and other decontamination applications. Several examples will be used to illustrate design choices and practical tradeoffs for these applications.","PeriodicalId":339166,"journal":{"name":"Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop.","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127675343","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

Production of large volume discharges in water and their industrial applications 大排量污水的生产及其工业应用

Conference Record of the Twenty-Fifth International Power Modulator Symposium, 2002 and 2002 High-Voltage Workshop. Pub Date : 2002-06-30 DOI: 10.1109/MODSYM.2002.1189438

H. Akiyama, S. Katsuki, T. Namihira, K. Ishibashi, N. Kiyosaki

引用次数: 1