Pub Date : 2006-05-14DOI: 10.1109/MODSYM.2006.365299
J. Schmidt, K. Kolacek, O. Frolov, V. Prukner, J. Straus
The CAPEX-U (capillary experiment -upgrade) apparatus has been developed as an XUV source based on high-current capillary discharge. Our main motivation for building such a new device was to create the XUV source with amplification of spontaneous emission at shorter wavelengths (below 20 nm), which have more practical applications. The preliminary experimental results of the assembled apparatus were obtained, especially the capillary current signal, and the time development of the pulse-forming-line voltage. The comparison of these experimental results with calculated/predicted values is reported in this paper as well
{"title":"Electrical Parameters of High Current Capillary Discharge Device","authors":"J. Schmidt, K. Kolacek, O. Frolov, V. Prukner, J. Straus","doi":"10.1109/MODSYM.2006.365299","DOIUrl":"https://doi.org/10.1109/MODSYM.2006.365299","url":null,"abstract":"The CAPEX-U (capillary experiment -upgrade) apparatus has been developed as an XUV source based on high-current capillary discharge. Our main motivation for building such a new device was to create the XUV source with amplification of spontaneous emission at shorter wavelengths (below 20 nm), which have more practical applications. The preliminary experimental results of the assembled apparatus were obtained, especially the capillary current signal, and the time development of the pulse-forming-line voltage. The comparison of these experimental results with calculated/predicted values is reported in this paper as well","PeriodicalId":410776,"journal":{"name":"Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium","volume":"26 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":"116758971","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}
Pub Date : 2006-05-14DOI: 10.1109/MODSYM.2006.365181
J. Harris, R. Anaya, D. Blackfield, Y. Chen, S. Falabella, S. Hawkins, C. Holmes, A. Paul, S. Sampayan, D. Sanders, L. Wang, A. Watson, G. Caporaso, M. Krogh
High voltage systems operated in vacuum require insulating materials to maintain spacing between conductors held at different potentials. Traditional vacuum insulators consist of a single material, often machined with a 45deg angle to suppress surface flashover. However, insulating structures composed of alternating layers of dielectric and metal can also be built, and have been experimentally shown to have higher breakdown voltages than conventional insulators. These "high-gradient insulators" allow closer spacing of components in vacuum, and therefore; have application to a wide range of high-voltage vacuum systems where compact size is important. This paper describes ongoing simulations and experimental work on these structures, as well as the theoretical understanding driving this research
{"title":"High-Gradient Insulators","authors":"J. Harris, R. Anaya, D. Blackfield, Y. Chen, S. Falabella, S. Hawkins, C. Holmes, A. Paul, S. Sampayan, D. Sanders, L. Wang, A. Watson, G. Caporaso, M. Krogh","doi":"10.1109/MODSYM.2006.365181","DOIUrl":"https://doi.org/10.1109/MODSYM.2006.365181","url":null,"abstract":"High voltage systems operated in vacuum require insulating materials to maintain spacing between conductors held at different potentials. Traditional vacuum insulators consist of a single material, often machined with a 45deg angle to suppress surface flashover. However, insulating structures composed of alternating layers of dielectric and metal can also be built, and have been experimentally shown to have higher breakdown voltages than conventional insulators. These \"high-gradient insulators\" allow closer spacing of components in vacuum, and therefore; have application to a wide range of high-voltage vacuum systems where compact size is important. This paper describes ongoing simulations and experimental work on these structures, as well as the theoretical understanding driving this research","PeriodicalId":410776,"journal":{"name":"Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium","volume":"21 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":"123512294","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}
Pub Date : 2006-05-14DOI: 10.1109/MODSYM.2006.365263
R. Cousin, J. Larour, P. Gouard, P. Raymond, A. Durand
In this paper, we present a compact MILO device working at 2.44 GHz. Fast electrical sensors such as I-dot and D-dot probes are installed along the tube in order to characterize at any time the current emitted from the cylindrical velvet cathode and the high voltage delivered by the Marx generator. Cold tests (without electrons) allow predicting the operating frequency and lead to a precise characterization of the periodic slow wave structure (SWS). First results presented here show the physical limitations of the high voltage generator and prepare future experiments under magnetically insulated conditions
{"title":"First Experiments on a Compact MILO Device","authors":"R. Cousin, J. Larour, P. Gouard, P. Raymond, A. Durand","doi":"10.1109/MODSYM.2006.365263","DOIUrl":"https://doi.org/10.1109/MODSYM.2006.365263","url":null,"abstract":"In this paper, we present a compact MILO device working at 2.44 GHz. Fast electrical sensors such as I-dot and D-dot probes are installed along the tube in order to characterize at any time the current emitted from the cylindrical velvet cathode and the high voltage delivered by the Marx generator. Cold tests (without electrons) allow predicting the operating frequency and lead to a precise characterization of the periodic slow wave structure (SWS). First results presented here show the physical limitations of the high voltage generator and prepare future experiments under magnetically insulated conditions","PeriodicalId":410776,"journal":{"name":"Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium","volume":"73 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":"115911083","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}
Pub Date : 2006-05-14DOI: 10.1109/MODSYM.2006.365234
Y. Srinivas, P. Khilar, M. Kushwah, K. Sathyanarayana, S. Kulkarni, B. Kadia, A. Makwana, K. Parmar, K. Parmar, S. Kumar, K. Rajneesh, H. M. Jadav, D. Bora
The 200 kW generator is designed and developed for ion cyclotron resonant heating (ICRH) experiments on Aditya Tokamak and 1.5 MW stage for SST-1 (steady-state super-conducting tokamak 1). The 200 kW stage uses 4CM 300,000GA tetrode. An existing DC power supply capable of delivering 30 kV, 20 A has successfully reconfigured with necessary protections and controls. This is being used for ICRH experiments in Aditya tokamak. screen grid power supply of 1 kVDC, 1 amp, filament power supply of 18 VAC, 430 Amp, have been developed in-house, while the control grid power supply is procured indigenously. High voltage power supplies for the pre-driver stage (2 kW), driver stage (20 kW) have been designed and commissioned along with necessary protections. All the high voltage and auxiliary power supplies can be operated and controlled in manual or remote mode through data acquisition and control (DAC) system. The existing 200 kW system would be augmented with the 1.5 MW stage for experiments on SST1 tokamak This paper presents the details of auxiliary and high voltage power supplies that are developed in house for 200 kW stage. The monitoring and arc protection circuits are described. Results of the wire-burn test are highlighted.
{"title":"High Voltage and Auxiliary Power Supply System for 200kW CW Generator","authors":"Y. Srinivas, P. Khilar, M. Kushwah, K. Sathyanarayana, S. Kulkarni, B. Kadia, A. Makwana, K. Parmar, K. Parmar, S. Kumar, K. Rajneesh, H. M. Jadav, D. Bora","doi":"10.1109/MODSYM.2006.365234","DOIUrl":"https://doi.org/10.1109/MODSYM.2006.365234","url":null,"abstract":"The 200 kW generator is designed and developed for ion cyclotron resonant heating (ICRH) experiments on Aditya Tokamak and 1.5 MW stage for SST-1 (steady-state super-conducting tokamak 1). The 200 kW stage uses 4CM 300,000GA tetrode. An existing DC power supply capable of delivering 30 kV, 20 A has successfully reconfigured with necessary protections and controls. This is being used for ICRH experiments in Aditya tokamak. screen grid power supply of 1 kVDC, 1 amp, filament power supply of 18 VAC, 430 Amp, have been developed in-house, while the control grid power supply is procured indigenously. High voltage power supplies for the pre-driver stage (2 kW), driver stage (20 kW) have been designed and commissioned along with necessary protections. All the high voltage and auxiliary power supplies can be operated and controlled in manual or remote mode through data acquisition and control (DAC) system. The existing 200 kW system would be augmented with the 1.5 MW stage for experiments on SST1 tokamak This paper presents the details of auxiliary and high voltage power supplies that are developed in house for 200 kW stage. The monitoring and arc protection circuits are described. Results of the wire-burn test are highlighted.","PeriodicalId":410776,"journal":{"name":"Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium","volume":"235 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":"130881312","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}
Pub Date : 2006-05-14DOI: 10.1109/MODSYM.2006.365250
Kyung-Jae Chung, J. Choe, H. Hwang, Gwang Hoon Kim, Kwang-Chul Ko, Hwang Yong Seok
The analysis of the repetitive pulse discharge system for the plasma source ion implantation is investigated with both circuit simulation and experiment. In the circuit model, the ion and electron currents on a target are self-consistently varied with the applied voltage because the waveforms of repetitive pulse are affected by the internal properties of plasma, as well as the external circuit parameters. The circuit simulation reveals that not only the plasma properties, but also the circuit components, are important for pulse system to operate at high repetition-rate. The experiments are conducted with a plane electrode immersed in rf-driven argon plasmas. When negative high-voltage pulses are applied to the electrode, the current and voltage waveforms are measured and compared with the simulation results. Control parameters for high repetition-rate operation are discussed, based on the self-consistent circuit analysis of the pulse system
{"title":"Analysis of Repetitive Pulse Discharge System for Plasma Source Ion Implantation","authors":"Kyung-Jae Chung, J. Choe, H. Hwang, Gwang Hoon Kim, Kwang-Chul Ko, Hwang Yong Seok","doi":"10.1109/MODSYM.2006.365250","DOIUrl":"https://doi.org/10.1109/MODSYM.2006.365250","url":null,"abstract":"The analysis of the repetitive pulse discharge system for the plasma source ion implantation is investigated with both circuit simulation and experiment. In the circuit model, the ion and electron currents on a target are self-consistently varied with the applied voltage because the waveforms of repetitive pulse are affected by the internal properties of plasma, as well as the external circuit parameters. The circuit simulation reveals that not only the plasma properties, but also the circuit components, are important for pulse system to operate at high repetition-rate. The experiments are conducted with a plane electrode immersed in rf-driven argon plasmas. When negative high-voltage pulses are applied to the electrode, the current and voltage waveforms are measured and compared with the simulation results. Control parameters for high repetition-rate operation are discussed, based on the self-consistent circuit analysis of the pulse system","PeriodicalId":410776,"journal":{"name":"Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium","volume":"04 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":"130472350","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}
Pub Date : 2006-05-14DOI: 10.1109/MODSYM.2006.365195
Shao Tao, Sun Guangsheng, Y. Ping, Wang Jue, Yuan Weiqun, Zhang, Shichang
Nanosecond-pulse breakdown presents special characteristics, depending on the pulse rise time and duration. Based on a repetitive nanosecond-pulse generator, breakdown phenomena of parallel-plate gaps in nitrogen were investigated with single shot and repetitive burst conditions under different gap conditions. The relationships among applied voltage, pulse repetition frequency, breakdown time lag, repetitive pulse stress time, and the number of applied pulses are presented. The curves involved in E-field strength, breakdown time lag and gas pressure are also obtained. The results show that single nanosecond-pulse breakdown was different from repetitive nanosecond-pulse breakdown. Repetitive nanosecond-pulse breakdown should be associated with the accumulation effect of residual ions and metastable species created by previous pulses
{"title":"Breakdown Phenomena in Nitrogen Due to Repetitive Nanosecond-pulses","authors":"Shao Tao, Sun Guangsheng, Y. Ping, Wang Jue, Yuan Weiqun, Zhang, Shichang","doi":"10.1109/MODSYM.2006.365195","DOIUrl":"https://doi.org/10.1109/MODSYM.2006.365195","url":null,"abstract":"Nanosecond-pulse breakdown presents special characteristics, depending on the pulse rise time and duration. Based on a repetitive nanosecond-pulse generator, breakdown phenomena of parallel-plate gaps in nitrogen were investigated with single shot and repetitive burst conditions under different gap conditions. The relationships among applied voltage, pulse repetition frequency, breakdown time lag, repetitive pulse stress time, and the number of applied pulses are presented. The curves involved in E-field strength, breakdown time lag and gas pressure are also obtained. The results show that single nanosecond-pulse breakdown was different from repetitive nanosecond-pulse breakdown. Repetitive nanosecond-pulse breakdown should be associated with the accumulation effect of residual ions and metastable species created by previous pulses","PeriodicalId":410776,"journal":{"name":"Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium","volume":"10 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":"128184559","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}
Pub Date : 2006-05-14DOI: 10.1109/MODSYM.2006.365273
W. Nunnally, S. Huenefeldt, T. Engel
The design of a 750 kJ sequentially-fired pulse forming network (SFPFN) is described and recent experimental results in the case of a linear load are presented and compared with simulations. The principal advantages of the sequentially fired network over its passive analogue are its utility in both linear and non-linear load applications. Operation of the SFPFN consists of charging multiple capacitor banks to various levels and sequentially firing these banks into the load at appropriate times. The load characteristics and desired pulse attributes determine the module charge voltage and sequential firing schedule. The SFPFN uses a computer controlled field programmable gate array (FPGA) to trigger the individual module firing intervals. The use of a computer controlled firing circuit provides an opportunity to incorporate realtime load monitoring and feedback to select optimal firing times and durations based on dynamic load conditions. Real-time monitoring also allows for firing sequence abortion in the event of a fault or other potentially harmful event. The charging controller features a computer monitoring and control system to allow a single power supply to charge multiple capacitor modules by an array of switching relays, even though each module may be charged to a different voltage. In linear load testing, the SFPFN provided a relatively constant current pulse to a resistive load
{"title":"Results from a 750 kJ Computer Controlled Sequentially-Fired Pulse Forming Network","authors":"W. Nunnally, S. Huenefeldt, T. Engel","doi":"10.1109/MODSYM.2006.365273","DOIUrl":"https://doi.org/10.1109/MODSYM.2006.365273","url":null,"abstract":"The design of a 750 kJ sequentially-fired pulse forming network (SFPFN) is described and recent experimental results in the case of a linear load are presented and compared with simulations. The principal advantages of the sequentially fired network over its passive analogue are its utility in both linear and non-linear load applications. Operation of the SFPFN consists of charging multiple capacitor banks to various levels and sequentially firing these banks into the load at appropriate times. The load characteristics and desired pulse attributes determine the module charge voltage and sequential firing schedule. The SFPFN uses a computer controlled field programmable gate array (FPGA) to trigger the individual module firing intervals. The use of a computer controlled firing circuit provides an opportunity to incorporate realtime load monitoring and feedback to select optimal firing times and durations based on dynamic load conditions. Real-time monitoring also allows for firing sequence abortion in the event of a fault or other potentially harmful event. The charging controller features a computer monitoring and control system to allow a single power supply to charge multiple capacitor modules by an array of switching relays, even though each module may be charged to a different voltage. In linear load testing, the SFPFN provided a relatively constant current pulse to a resistive load","PeriodicalId":410776,"journal":{"name":"Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium","volume":"138 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":"125748694","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}
Pub Date : 2006-05-14DOI: 10.1109/MODSYM.2006.365264
K. O'connor, R. Curry, S. Kovaleski
The development of portable microwave sources based upon explosively-driven generators requires the selection and design of an antenna that is well-suited to radiate the RF energy while meeting the very specific demands of the application. The magnetocumulative generator (MCG), which is often also called a flux-compression generator (FCG), the ferroelectric generator (FEG), and the ferromagnetic generator (FMG) convert the chemical energy of explosive materials into high-power electrical energy. Through power conditioning, the electrical energy converted from the explosive discharge can be radiated as microwaves. However, the extreme operating conditions for this application restrict the use of many conventional antennas and favor the use of some more unconventional plasma antenna systems. This paper provides an analysis of the viable plasma antenna options in which the plasma is actively radiating, as opposed to other designs in which plasma is used only to direct radiation from a metallic antenna. The four plasma antenna systems considered are based on laser-initiated ionization of atmosphere, confined plasma columns, silicon-based plasma, and an explosively-generated plasma jet. Each plasma antenna is analyzed on the device's operating principles, past experimental performances, and practical considerations when employed in an explosively-driven system. The explosively-generated plasma antenna is selected as the optimal plasma antenna for an explosively-driven mobile system. The explosively-generated plasma antenna has the favorable characteristics of having a common energy source with the explosive generators, being simple and durable in design to withstand the shock and thermal stresses of generator operation, relatively low mass and volume requirements, and high power capability. The significant radiating mechanisms of the explosively-generated plasma antenna and important plasma characteristics are outlined. The important considerations for the selection of explosive are detailed. Based upon the total plasma jet lifetime and the velocity of the combustion products in the jet, the minimal required mass of explosives is derived, completing the fundamental design parameters.
{"title":"Analysis of Plasma Antenna Options for Explosively-Driven Microwave Generators and Outline of Plasma Antenna Design","authors":"K. O'connor, R. Curry, S. Kovaleski","doi":"10.1109/MODSYM.2006.365264","DOIUrl":"https://doi.org/10.1109/MODSYM.2006.365264","url":null,"abstract":"The development of portable microwave sources based upon explosively-driven generators requires the selection and design of an antenna that is well-suited to radiate the RF energy while meeting the very specific demands of the application. The magnetocumulative generator (MCG), which is often also called a flux-compression generator (FCG), the ferroelectric generator (FEG), and the ferromagnetic generator (FMG) convert the chemical energy of explosive materials into high-power electrical energy. Through power conditioning, the electrical energy converted from the explosive discharge can be radiated as microwaves. However, the extreme operating conditions for this application restrict the use of many conventional antennas and favor the use of some more unconventional plasma antenna systems. This paper provides an analysis of the viable plasma antenna options in which the plasma is actively radiating, as opposed to other designs in which plasma is used only to direct radiation from a metallic antenna. The four plasma antenna systems considered are based on laser-initiated ionization of atmosphere, confined plasma columns, silicon-based plasma, and an explosively-generated plasma jet. Each plasma antenna is analyzed on the device's operating principles, past experimental performances, and practical considerations when employed in an explosively-driven system. The explosively-generated plasma antenna is selected as the optimal plasma antenna for an explosively-driven mobile system. The explosively-generated plasma antenna has the favorable characteristics of having a common energy source with the explosive generators, being simple and durable in design to withstand the shock and thermal stresses of generator operation, relatively low mass and volume requirements, and high power capability. The significant radiating mechanisms of the explosively-generated plasma antenna and important plasma characteristics are outlined. The important considerations for the selection of explosive are detailed. Based upon the total plasma jet lifetime and the velocity of the combustion products in the jet, the minimal required mass of explosives is derived, completing the fundamental design parameters.","PeriodicalId":410776,"journal":{"name":"Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium","volume":"70 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":"123039473","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}
Pub Date : 2006-05-14DOI: 10.1109/MODSYM.2006.365309
M. Roybal, M. Abney, S. Prasad, M. Fuks, J. Buchenauer, K. Prestwich, J. Gaudet, E. Schamiloglu
In this paper, the design and optimization efforts aimed at reducing the intrinsic impedance of the Marx generator are discussed. By reducing the number of stages of the Marx's electrical circuit from the presently configured 11-stage Marx to a 7-stage Marx the inductance can be significantly decreased. In order to provide power from the Marx generator to an X-band relativistic magnetron, a coaxial transmission line and a vacuum-insulator interface will be used and the results of the design will be discussed.
{"title":"Design and Optimization of a Low-e mpedance Pulsed-Power Marx Generator to Drive High-Power Releativistic X-Band Magnetron","authors":"M. Roybal, M. Abney, S. Prasad, M. Fuks, J. Buchenauer, K. Prestwich, J. Gaudet, E. Schamiloglu","doi":"10.1109/MODSYM.2006.365309","DOIUrl":"https://doi.org/10.1109/MODSYM.2006.365309","url":null,"abstract":"In this paper, the design and optimization efforts aimed at reducing the intrinsic impedance of the Marx generator are discussed. By reducing the number of stages of the Marx's electrical circuit from the presently configured 11-stage Marx to a 7-stage Marx the inductance can be significantly decreased. In order to provide power from the Marx generator to an X-band relativistic magnetron, a coaxial transmission line and a vacuum-insulator interface will be used and the results of the design will be discussed.","PeriodicalId":410776,"journal":{"name":"Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium","volume":"195 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":"126812716","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}
Pub Date : 2006-05-14DOI: 10.1109/MODSYM.2006.365307
J. Mayes, E. Eubank, M. Lara, M. Mayes
Two compact MV Marx generators are arranged to fire into a common spark gap and designed to deliver pulsed voltages in excess of 3 MV. Each generator is characterized by 40 stages of 8.1 nF capacitance and a charge voltage from 20-40 kV, which results in an erected voltage of up to 1.6 MV and pulse energies of more than 250 J. Each generator has an integrated controllable power supply and pressure control, and is battery powered. The two generators are charged with opposite polarity voltages, which can result in a differential pulsed magnitude of 3.2 MV. A central thyratron trigger source is remotely located and is designed for delivering two simultaneous high voltage trigger pulses to each generator. Design considerations are presented, as well as experimental results
{"title":"Dual Polarity MV Marx Generator System","authors":"J. Mayes, E. Eubank, M. Lara, M. Mayes","doi":"10.1109/MODSYM.2006.365307","DOIUrl":"https://doi.org/10.1109/MODSYM.2006.365307","url":null,"abstract":"Two compact MV Marx generators are arranged to fire into a common spark gap and designed to deliver pulsed voltages in excess of 3 MV. Each generator is characterized by 40 stages of 8.1 nF capacitance and a charge voltage from 20-40 kV, which results in an erected voltage of up to 1.6 MV and pulse energies of more than 250 J. Each generator has an integrated controllable power supply and pressure control, and is battery powered. The two generators are charged with opposite polarity voltages, which can result in a differential pulsed magnitude of 3.2 MV. A central thyratron trigger source is remotely located and is designed for delivering two simultaneous high voltage trigger pulses to each generator. Design considerations are presented, as well as experimental results","PeriodicalId":410776,"journal":{"name":"Conference Record of the 2006 Twenty-Seventh International Power Modulator Symposium","volume":"1 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":"129304850","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}
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