Pub Date : 2007-06-17DOI: 10.1109/PPPS.2007.4346104
J. Goforth, C. Fowler, D. Herrera, E. Lopez, H. Oona, D. Tasker, D. Torres, R. Anderson, E. Baluyot, T. Clancy, D. P. Milhous, D. Reisman, A. D. White
The Ranchito helical flux compression generator (HFCG) was designed at Los Alamos in the mid 1990s by Max Fowler. The intent was to supply a few megamperes as the initial current for a fast high current FCG in situations where large capacitor banks were not available. A complete characterization of Ranchito has never been published. However, a recent experiment was conducted that provides data suitable for publication. In the test a Ranchito generator was used to feed current into a simulated plate generator. In the test, we supplied 17.24 kA initial current to the 125 μH Ranchito from a capacitor bank, and a 2.75 MA current was subsequently delivered to a load of 287 nH. Full details of the generator design and experimental results are presented in the paper. Our analysis makes use of an inductance (L(t)) curve taken from paper copies in Max Fowler’s original notes, and follows the approach used by Fowler and Caird1 to characterize the MK-IX HFCG. A complete working model of Ranchito results, although newer computer codes may now provide a better approach. The data presented are useful for comparing results from newer models.
{"title":"The ranchito helical magnetic flux compression generator","authors":"J. Goforth, C. Fowler, D. Herrera, E. Lopez, H. Oona, D. Tasker, D. Torres, R. Anderson, E. Baluyot, T. Clancy, D. P. Milhous, D. Reisman, A. D. White","doi":"10.1109/PPPS.2007.4346104","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4346104","url":null,"abstract":"The Ranchito helical flux compression generator (HFCG) was designed at Los Alamos in the mid 1990s by Max Fowler. The intent was to supply a few megamperes as the initial current for a fast high current FCG in situations where large capacitor banks were not available. A complete characterization of Ranchito has never been published. However, a recent experiment was conducted that provides data suitable for publication. In the test a Ranchito generator was used to feed current into a simulated plate generator. In the test, we supplied 17.24 kA initial current to the 125 μH Ranchito from a capacitor bank, and a 2.75 MA current was subsequently delivered to a load of 287 nH. Full details of the generator design and experimental results are presented in the paper. Our analysis makes use of an inductance (L(t)) curve taken from paper copies in Max Fowler’s original notes, and follows the approach used by Fowler and Caird1 to characterize the MK-IX HFCG. A complete working model of Ranchito results, although newer computer codes may now provide a better approach. The data presented are useful for comparing results from newer models.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"50 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":"115822441","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 : 2007-06-17DOI: 10.1109/PPPS.2007.4651822
J. King, J. Pasley, F. Beg, R. Stephens, E. Brambrink, A. Edens, M. Geissel, D. Headley, P. Rambo, J. Schwarz, D. Sinars
We present results from laser-target interaction experiments performed within the 100 TW facility at Sandia National Laboratory. A series of K-alpha images of 25μm thick copper foils reveal an average K-alpha spot diameter of ∼70±10μm and a pointing error of less than 50μm in both the vertical and horizontal directions. 2 omega optical probe pulse shadowgraphy images show front surface plasma growth and transverse focal structure from self-emission. Stacks of radiochromic film (RCF) positioned along the rear normal to the Cu foil indicate an average peak proton energy of 8±2 MeV.
{"title":"Commissioning experiments on the 100 TW Sandia laser","authors":"J. King, J. Pasley, F. Beg, R. Stephens, E. Brambrink, A. Edens, M. Geissel, D. Headley, P. Rambo, J. Schwarz, D. Sinars","doi":"10.1109/PPPS.2007.4651822","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4651822","url":null,"abstract":"We present results from laser-target interaction experiments performed within the 100 TW facility at Sandia National Laboratory. A series of K-alpha images of 25μm thick copper foils reveal an average K-alpha spot diameter of ∼70±10μm and a pointing error of less than 50μm in both the vertical and horizontal directions. 2 omega optical probe pulse shadowgraphy images show front surface plasma growth and transverse focal structure from self-emission. Stacks of radiochromic film (RCF) positioned along the rear normal to the Cu foil indicate an average peak proton energy of 8±2 MeV.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"157 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":"131964987","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 : 2007-06-17DOI: 10.1109/PPPS.2007.4345921
R. Reinovsky, W. Atchison, G. Dimonte, A. Kaul, G. Rodriguez, C. Rousculp, P. Reardon
Pulsed Power Hydrodynamics (PPH) is a new application of low-impedance, pulsed power technology to the study of complex hydrodynamics, instabilities, turbulence, and material properties in a highly precise, controllable environment at the extremes of pressure and material velocity. The Atlas facility, designed and built by Los Alamos, is the world’s first, and only, laboratory pulsed power system designed specifically to explore this relatively new family of pulsed power applications. Constructed in the year 2000 and commissioned in August 2001, Atlas is a 24-MJ high-performance capacitor bank delivering currents up to 30-Megamperes with a rise time of 5 to 6-μsec. The high-precision, cylindrically imploding liner is the tool most frequently used to convert electromagnetic energy into the hydrodynamic (particle kinetic) energy needed to drive strong shocks, quasi-isentropic compression, or large volume, adiabatic compression for the experiments. At typical parameters, a 30-gr, 1-mm-thick liner with an initial radius of 5-cm, and an intermediate current of 20-MA can be accelerated to 7.5-km/sec producing megabar shocks in medium density targets. Velocities up to 20-km/sec and pressures ≫20-Mbar in high density targets are possible.
{"title":"Pulsed Power Hydrodynamics: Atlas results and future perspectives","authors":"R. Reinovsky, W. Atchison, G. Dimonte, A. Kaul, G. Rodriguez, C. Rousculp, P. Reardon","doi":"10.1109/PPPS.2007.4345921","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4345921","url":null,"abstract":"Pulsed Power Hydrodynamics (PPH) is a new application of low-impedance, pulsed power technology to the study of complex hydrodynamics, instabilities, turbulence, and material properties in a highly precise, controllable environment at the extremes of pressure and material velocity. The Atlas facility, designed and built by Los Alamos, is the world’s first, and only, laboratory pulsed power system designed specifically to explore this relatively new family of pulsed power applications. Constructed in the year 2000 and commissioned in August 2001, Atlas is a 24-MJ high-performance capacitor bank delivering currents up to 30-Megamperes with a rise time of 5 to 6-μsec. The high-precision, cylindrically imploding liner is the tool most frequently used to convert electromagnetic energy into the hydrodynamic (particle kinetic) energy needed to drive strong shocks, quasi-isentropic compression, or large volume, adiabatic compression for the experiments. At typical parameters, a 30-gr, 1-mm-thick liner with an initial radius of 5-cm, and an intermediate current of 20-MA can be accelerated to 7.5-km/sec producing megabar shocks in medium density targets. Velocities up to 20-km/sec and pressures ≫20-Mbar in high density targets are possible.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"78 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":"130275786","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 : 2007-06-17DOI: 10.1109/PPPS.2007.4345860
A. Roy, J. Mondal, R. Menon, S. Mitra, D. Kumar, Archana Sharma, K. C. Mittal, K. Nagesh, D. Chakravarthy
Intense Relativistic Electron beam diode has been operated without a Prepulse switch. A bipolar Prepulse of peak 60 kV voltage has been recorded at the diode voltage. Prepulse generated plasma expands and lowers the impedance of the diode. For small gap Prepulse generated plasma completely fills the anode cathode gap and the diode behaves as plasma filled diode. It has been observed that electron beam can be generated without encountering the closure problem if the Anode Cathode gap is kept larger than that estimated by the Child Langmuir relation. At a large gap the beam parameters obtained are 420 KeV, 22 kA, 100 ns. Intense Electron Beam Diode behavior was studied for various anode cathode gaps and voltages in presence of Prepulse. From the experimentally obtained values of perveance an upper limit was set up for the Marx Voltage (or Anode Cathode Voltage) and lower limit for the Anode Cathode gap in order to avoid the gap closure problem and the diode can be operated with a better shot to shot reproducibility.
强相对论电子束二极管在没有预脉冲开关的情况下工作。在二极管电压下记录了峰值电压为60kv的双极预脉冲。预脉冲产生的等离子体膨胀并降低二极管的阻抗。对于小间隙，预脉冲产生的等离子体完全填充阳极阴极间隙，二极管表现为等离子体填充二极管。观察到，如果正极间隙大于Child Langmuir关系所估计的间隙，则可以在不遇到闭合问题的情况下产生电子束。在大间隙处，获得的光束参数为420 KeV, 22 kA, 100 ns。研究了预脉冲存在下强电子束二极管在不同负极间隙和电压下的行为。根据实验得到的性能值，设定了马克思电压(或阳极阴极电压)的上限和阳极阴极间隙的下限，以避免间隙闭合问题，并使二极管具有更好的弹间再现性。
{"title":"Intense Relativistic Electron beam diode in presence of Prepulse","authors":"A. Roy, J. Mondal, R. Menon, S. Mitra, D. Kumar, Archana Sharma, K. C. Mittal, K. Nagesh, D. Chakravarthy","doi":"10.1109/PPPS.2007.4345860","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4345860","url":null,"abstract":"Intense Relativistic Electron beam diode has been operated without a Prepulse switch. A bipolar Prepulse of peak 60 kV voltage has been recorded at the diode voltage. Prepulse generated plasma expands and lowers the impedance of the diode. For small gap Prepulse generated plasma completely fills the anode cathode gap and the diode behaves as plasma filled diode. It has been observed that electron beam can be generated without encountering the closure problem if the Anode Cathode gap is kept larger than that estimated by the Child Langmuir relation. At a large gap the beam parameters obtained are 420 KeV, 22 kA, 100 ns. Intense Electron Beam Diode behavior was studied for various anode cathode gaps and voltages in presence of Prepulse. From the experimentally obtained values of perveance an upper limit was set up for the Marx Voltage (or Anode Cathode Voltage) and lower limit for the Anode Cathode gap in order to avoid the gap closure problem and the diode can be operated with a better shot to shot reproducibility.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"136 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":"131607230","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 : 2007-06-17DOI: 10.1109/PPPS.2007.4652465
B. Merritt, G. Dreifuerst, G. James, S. Strickland, E. Tse
A 15kJoule, Flash Lamp Power Conditioning Unit has been successfully designed, developed, and deployed in the National Ignition Facility (NIF) Preamplifier Modules (PAM). The primary design philosophy of this power conditioning unit (PCU) is safety, reliability, and manufacturability. Cost reduction over commercially equivalent systems was also achieved through an easily manufactured packaging design optimized to meet NIF requirements. While still maintaining low cost, the PCU design includes a robust control system, fault diagnostic system, and safety features. The pulsed power design includes 6 PFN modules, each including a dual series injection trigger transformer, that drive a total of 12 flash lamp loads. The lamps are individually triggered via a 20kV pulse produced by a 1kV, MCT switched capacitive discharge unit on the primary side of the trigger transformer. The remote control interface includes an embedded controller that captures flash lamp current wave forms and fault status for each shot. The embedded controller provides the flexibility of remotely adjusting both the main drive voltage from 1.6 to 2.5 kV and the trigger voltage from 0 to 20 kV.
{"title":"15 KJ Flash Lamp, Power Conditioning Unit designed for safety, reliability & manufacturability","authors":"B. Merritt, G. Dreifuerst, G. James, S. Strickland, E. Tse","doi":"10.1109/PPPS.2007.4652465","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4652465","url":null,"abstract":"A 15kJoule, Flash Lamp Power Conditioning Unit has been successfully designed, developed, and deployed in the National Ignition Facility (NIF) Preamplifier Modules (PAM). The primary design philosophy of this power conditioning unit (PCU) is safety, reliability, and manufacturability. Cost reduction over commercially equivalent systems was also achieved through an easily manufactured packaging design optimized to meet NIF requirements. While still maintaining low cost, the PCU design includes a robust control system, fault diagnostic system, and safety features. The pulsed power design includes 6 PFN modules, each including a dual series injection trigger transformer, that drive a total of 12 flash lamp loads. The lamps are individually triggered via a 20kV pulse produced by a 1kV, MCT switched capacitive discharge unit on the primary side of the trigger transformer. The remote control interface includes an embedded controller that captures flash lamp current wave forms and fault status for each shot. The embedded controller provides the flexibility of remotely adjusting both the main drive voltage from 1.6 to 2.5 kV and the trigger voltage from 0 to 20 kV.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"2 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":"128942493","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 : 2007-06-17DOI: 10.1109/PPPS.2007.4652430
M. Sack, R. Stangle
Since 2000 a mobile electroporation device has been operated for scientific and testing purposes. Now a breakdown of the insulation at one Marx generator output to ground has occurred due to an electric overstressing. This failure makes a redesign of the Marx generator necessary. For the redesign a bipolar Marx generator with a transient insulation to ground has been compared to one with a fixed center ground connection. The paper describes why the solution with the fixed ground connection is considered to be more suitable for the application in the mobile electroporation device.
{"title":"A bipolar Marx generator for a mobile electroporation device","authors":"M. Sack, R. Stangle","doi":"10.1109/PPPS.2007.4652430","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4652430","url":null,"abstract":"Since 2000 a mobile electroporation device has been operated for scientific and testing purposes. Now a breakdown of the insulation at one Marx generator output to ground has occurred due to an electric overstressing. This failure makes a redesign of the Marx generator necessary. For the redesign a bipolar Marx generator with a transient insulation to ground has been compared to one with a fixed center ground connection. The paper describes why the solution with the fixed ground connection is considered to be more suitable for the application in the mobile electroporation device.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"209 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133021009","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 : 2007-06-17DOI: 10.1109/PPPS.2007.4346202
P. Rutberg, I. Kumkova, V. Kuznetsov, S. Popov, A. Rutberg, A. Safronov, V. Shiryaev, A. Surov
The stationary plasma generators of alternating current with rod electrodes and power from 5 kW up to 50 kW have been developed in IEE RAS.The generators are used in plasmachemical installations intended for various practical applications including waste destruction and processing with synthesis-gas production.These are single-phase and three-phase high-voltage lasma generators, which prime property is ability to work on oxidizing media. In the presented paper,the basic physical processes proceeding in discharge chambers are examined.External characteristics of lasma generators are based on experimental data: dependences of working gas heat content,power in arcs and thermal efficiency from the plasma gas flow rate.Influence of variation of the plasma gas flow rate on electric parameters is shown. High-voltage plasma generators with rod electrodes are designed for operation on oxidizing environments (air) at atmospheric pressure with power (5-50)kW, plasma gas flow rate can vary in the range between 1 and 25 g/s. Thus, the thermal efficiency is 80-95 %. The presented plasma generators have several advantages what makes their use at plasma technologies realization very prospective. One of basic advantages is the opportunity to control working gas heat content in a wide range (for air - from 2 MJ/kg up to 19 MJ/kg).Duration of continuous operation of such plasma generators is defined by electrode lifetime and makes several hundreds hours.
{"title":"High-voltage plasma generators of alternating current with rod electrodes stationary operating on oxidizing media","authors":"P. Rutberg, I. Kumkova, V. Kuznetsov, S. Popov, A. Rutberg, A. Safronov, V. Shiryaev, A. Surov","doi":"10.1109/PPPS.2007.4346202","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4346202","url":null,"abstract":"The stationary plasma generators of alternating current with rod electrodes and power from 5 kW up to 50 kW have been developed in IEE RAS.The generators are used in plasmachemical installations intended for various practical applications including waste destruction and processing with synthesis-gas production.These are single-phase and three-phase high-voltage lasma generators, which prime property is ability to work on oxidizing media. In the presented paper,the basic physical processes proceeding in discharge chambers are examined.External characteristics of lasma generators are based on experimental data: dependences of working gas heat content,power in arcs and thermal efficiency from the plasma gas flow rate.Influence of variation of the plasma gas flow rate on electric parameters is shown. High-voltage plasma generators with rod electrodes are designed for operation on oxidizing environments (air) at atmospheric pressure with power (5-50)kW, plasma gas flow rate can vary in the range between 1 and 25 g/s. Thus, the thermal efficiency is 80-95 %. The presented plasma generators have several advantages what makes their use at plasma technologies realization very prospective. One of basic advantages is the opportunity to control working gas heat content in a wide range (for air - from 2 MJ/kg up to 19 MJ/kg).Duration of continuous operation of such plasma generators is defined by electrode lifetime and makes several hundreds hours.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"14 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":"131433363","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 : 2007-06-17DOI: 10.1109/PPPS.2007.4652533
Y. Kalinin, S. Anan’ev, Y. Bakshaev, A. Bartov, P. Blinov, V. Bryzgunov, A. Chernenko, S. Danko, E. Kazakov, A. Kingsep, V. Korolev, V. Mizhiritsky, V. Smirnov, S. Tkachenko, M. Mazarakis, C. Olson
At the Kurchatov Institute, the series of IFE experiments is carried out on the S-300 high-current generator (3 MA, 100 ns, 0.15 Ohm). In this talk, the experimental results on the S-300 machine are presented, related to the study of operation of co-axial magnetically self-insulated transporting line, by the linear current flow density on the inner electrode surface up to j ≈ 7 MA/cm. The specific parameters of this current-carrying line fairly correspond to those of the Sandia Laboratories’ conceptual project of IFE reactor based on the fast Z-pinch [1]. The near-electrode plasma dynamics and its effect on the current transport were studied. The cathode material effect, as well as that of gases and oil layer absorbed by its surface, on the near-electrode plasma dynamics and the current pulse transport along the short MITL segment ware studied too. With respect to the whole project, our conclusion is quite optimistic, to wit, we have found the idea of Recyclable Transporting Lines being adequate to the IFE reactor requirements.
{"title":"Experimental modeling on the recyclable magnetically insulated transporting lines aimed at the IFE reactor","authors":"Y. Kalinin, S. Anan’ev, Y. Bakshaev, A. Bartov, P. Blinov, V. Bryzgunov, A. Chernenko, S. Danko, E. Kazakov, A. Kingsep, V. Korolev, V. Mizhiritsky, V. Smirnov, S. Tkachenko, M. Mazarakis, C. Olson","doi":"10.1109/PPPS.2007.4652533","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4652533","url":null,"abstract":"At the Kurchatov Institute, the series of IFE experiments is carried out on the S-300 high-current generator (3 MA, 100 ns, 0.15 Ohm). In this talk, the experimental results on the S-300 machine are presented, related to the study of operation of co-axial magnetically self-insulated transporting line, by the linear current flow density on the inner electrode surface up to j ≈ 7 MA/cm. The specific parameters of this current-carrying line fairly correspond to those of the Sandia Laboratories’ conceptual project of IFE reactor based on the fast Z-pinch [1]. The near-electrode plasma dynamics and its effect on the current transport were studied. The cathode material effect, as well as that of gases and oil layer absorbed by its surface, on the near-electrode plasma dynamics and the current pulse transport along the short MITL segment ware studied too. With respect to the whole project, our conclusion is quite optimistic, to wit, we have found the idea of Recyclable Transporting Lines being adequate to the IFE reactor requirements.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"69 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":"127417297","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 : 2007-06-17DOI: 10.1109/PPPS.2007.4652363
I. Roth, R. Torti, M. Gaudreau, M. Kempkes
Diversified Technologies, Inc. (DTI) is developing a solid-state hard-switch modulator (Figure 1 and Figure 2) for the International Linear Collider, under the U.S. DOE SBIR program. This modulator will supply pulses at up to 135 kV, 165 A, and 1.5 ms for the 1.3-GHz klystrons. The full voltage is switched, so no transformer is needed. To achieve the required pulse flatness (±0.5% at 5 Hz) without a large capacitor bank, an LC bouncer compensates for the voltage droop.
{"title":"A high-voltage hard-switch modulator for the International Linear Collider","authors":"I. Roth, R. Torti, M. Gaudreau, M. Kempkes","doi":"10.1109/PPPS.2007.4652363","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4652363","url":null,"abstract":"Diversified Technologies, Inc. (DTI) is developing a solid-state hard-switch modulator (Figure 1 and Figure 2) for the International Linear Collider, under the U.S. DOE SBIR program. This modulator will supply pulses at up to 135 kV, 165 A, and 1.5 ms for the 1.3-GHz klystrons. The full voltage is switched, so no transformer is needed. To achieve the required pulse flatness (±0.5% at 5 Hz) without a large capacitor bank, an LC bouncer compensates for the voltage droop.","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"118 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":"124568139","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 : 2007-06-17DOI: 10.1109/PPPS.2007.4652409
N. Vaze, K. Arjunan, M. Gallagher, V. Vasilets, A. Gutsol, A. Fridman, S. Anandan
The sterilization effect of plasma on air and water were investigated in this study*. For air sterilization, a small scale model of HVAC was designed and Dielectric Barrier Discharge plasma source was used for treatment of air. This PDRF (Pathogen Detection and Remediation Facility) consisted of a circulatory airflow system, a plasma chamber and a sampling system. Air sterilization experiments were performed and the inactivation of Escherichia coli was studied. Conventional water sterilization methods such as chlorination, ozonation, filtration, UV irradiation etc have several drawbacks. Pulsed plasma discharge for the destruction of microorganisms in waste water and potable water is a cost effective technique developed recently. The energy efficiency of different types of plasma discharges in water contaminated with Escherichia coli has been studied. The effect of initial concentration of bacterial solution on the inactivation efficiency has also been studied
{"title":"Air and water sterilization using non-thermal plasma","authors":"N. Vaze, K. Arjunan, M. Gallagher, V. Vasilets, A. Gutsol, A. Fridman, S. Anandan","doi":"10.1109/PPPS.2007.4652409","DOIUrl":"https://doi.org/10.1109/PPPS.2007.4652409","url":null,"abstract":"The sterilization effect of plasma on air and water were investigated in this study*. For air sterilization, a small scale model of HVAC was designed and Dielectric Barrier Discharge plasma source was used for treatment of air. This PDRF (Pathogen Detection and Remediation Facility) consisted of a circulatory airflow system, a plasma chamber and a sampling system. Air sterilization experiments were performed and the inactivation of Escherichia coli was studied. Conventional water sterilization methods such as chlorination, ozonation, filtration, UV irradiation etc have several drawbacks. Pulsed plasma discharge for the destruction of microorganisms in waste water and potable water is a cost effective technique developed recently. The energy efficiency of different types of plasma discharges in water contaminated with Escherichia coli has been studied. The effect of initial concentration of bacterial solution on the inactivation efficiency has also been studied","PeriodicalId":275106,"journal":{"name":"2007 16th IEEE International Pulsed Power Conference","volume":"38 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":"114489569","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：