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New Data From the Integration of the Los Alamos MK-X and R43S6 Flux Compression Generators
J. H. Goforth;V. Z. Ahluwalia;E. V. Baca;A. T. Barnes;E. N. Brown;R. S. Bullis;C. J. Farnsworth;T. J. Foley;T. A. Gianakon;J. A. Gielata;J. A. Gunderson;B. Glover;D. H. Herrera;M. S. Jakulewicz;D. C. Jaramillo;I. D. Lopez-Pulliam;S. M. Madden;A. M. Novak;H. Oona;P. J. Rae;K. Rainey;R. C. Rettinger;C. L. Rousculp;D. N. Seitz;W. S. Shofner;R. G. Watt;J. L. Yoder;A. J. Johnson;A. J. Young
2021 IEEE Pulsed Power Conference (PPC)
Year: 2021 | Conference Paper |
Los Alamos National Laboratory has a long history of developing and fielding high explosive pulsed power (HEPP) components and systems. In recent years, the Ranchero flux compression generator (FCG or generator) has been modified for improved high current performance, and a new helical flux compression generator (HFCG), the MK-X, has been designed to provide higher initial flux for Ranchero FCGs t...Show More
New Data From the Integration of the Los Alamos MK-X and R43S6 Flux Compression Generators
J. H. Goforth;V. Z. Ahluwalia;E. V. Baca;A. T. Barnes;E. N. Brown;R. S. Bullis;C. J. Farnsworth;T. J. Foley;T. A. Gianakon;J. A. Gielata;J. A. Gunderson;B. Glover;D. H. Herrera;M. S. Jakulewicz;D. C. Jaramillo;I. D. Lopez-Pulliam;S. M. Madden;A. M. Novak;H. Oona;P. J. Rae;K. Rainey;R. C. Rettinger;C. L. Rousculp;D. N. Seitz;W. S. Shofner;R. G. Watt;J. L. Yoder;A. J. Johnson;A. J. Young
Year: 2021 | Conference Paper |
On the Performance of Triggered Closing Switches Deployed in High Explosive Pulsed Power Experiments
2019 IEEE Pulsed Power & Plasma Science (PPPS)
Year: 2019 | Conference Paper |
Reported in this paper are the results of efforts to improve the performance of a triggered closing switch system used in a 450 kilojoule capacitor bank, which is used as a seed current source for magnetic flux compression generator experiments. The capacitor bank switch utilizes two different high power closing switches: a commercial-off-the-shelf pressurized spark gap and a custom designed solid...Show More
3D Magneto-Hydrodynamic Modeling of an Overstressed Helical Magnetic Flux Compression Generator
A.J. Johnson;A.J. Young;A.D. White;J.B. Javedani;R.A. Richardson;J.M. Solberg
2019 IEEE Pulsed Power & Plasma Science (PPPS)
Year: 2019 | Conference Paper |
Lawrence Livermore National Laboratory (LLNL) is actively engaged in an experimental program using two-stage magnetic flux compression generators (MFCGs) as pulsed power sources for equation of state measurements [1], [2]. These MFCGs amplify a current pulse in two stages. The first stage uses a helical MFCG and the second stage uses a coaxial MFCG. In support of this program, LLNL recently conduc...Show More
On the Results of an Experiment with a Megajoule Class Helical Flux Compression Generator Operating at Above Nominal Levels of Current and Voltage Stress
A. J. Young;A. D. White;J. J. Trueblood;A.W. Lodes;H. K. Loey;R.A. Richardson;A.J. Johnson;D.P. Milhous;A.J. Ferriera;R.D. Speer;E.V. Baluyot;A. Bockman;R.K. Hicks;K.M. Hood;J.B. Javedani;S.D. Leahy;T.T. Leever;G.R. Mease;D.B. Norton;A.M. Pearson;A.CS. Ray;M.E. Tillman;D. H. Herrera;P. Dickson;J. A. Gunderson
2018 16th International Conference on Megagauss Magnetic Field Generation and Related Topics (MEGAGAUSS)
Year: 2018 | Conference Paper |
Cited by: Papers (2)
An experiment conducted with a megajoule class helical flux compression generator (HFCG), operating into a primarily inductive load, is described. The motivation behind the experiment was to benchmark the performance of the generator at higher currents and voltages than were tested in prior experiments. The intention was to push operation into a regime where flux loss was likely to become nonlinea...Show More
On the Results of an Experiment with a Megajoule Class Helical Flux Compression Generator Operating at Above Nominal Levels of Current and Voltage Stress
A. J. Young;A. D. White;J. J. Trueblood;A.W. Lodes;H. K. Loey;R.A. Richardson;A.J. Johnson;D.P. Milhous;A.J. Ferriera;R.D. Speer;E.V. Baluyot;A. Bockman;R.K. Hicks;K.M. Hood;J.B. Javedani;S.D. Leahy;T.T. Leever;G.R. Mease;D.B. Norton;A.M. Pearson;A.CS. Ray;M.E. Tillman;D. H. Herrera;P. Dickson;J. A. Gunderson
Year: 2018 | Conference Paper |
A Small D-dot for Use on Flux Compression Generators
R. A. Richardson;A.J. Johnson;A. D. White;A. J. Young;J. J. Trueblood;J. B. Javidani;D. P. Milhous;T. J. Ferriera
2018 16th International Conference on Megagauss Magnetic Field Generation and Related Topics (MEGAGAUSS)
Year: 2018 | Conference Paper |
Cited by: Papers (1)
A D-dot voltage probe was designed and tested on a megajoule class flux compression generator (FCG) to measure the voltage on the generator load. Design calculations will be shown, along with experimental data taken from laboratory prototype testing as well as the explosive FCG experiment. The D-dot was terminated in a high impedance amplifier, so that the D-dot is mostly self-integrating (i.e. a ...Show More
Explosive pulsed power experimental capability at LLNL
A. D. White;D. P. Milhous;D. A. Goerz;R. A. Anderson;T. J. Ferriera;R. D. Speer;R. M. Kuklo;A. J. Young;D. A. Lahowe;G. R. Mease;M. A. Suda;A. D. Wiltse;D. B. Reisman;E. P. Daykin
2012 14th International Conference on Megagauss Magnetic Field Generation and Related Topics (MEGAGAUSS)
Year: 2012 | Conference Paper |
Cited by: Papers (2)
LLNL has developed a family of advanced magnetic flux compression generators (FCGs) used to perform high energy density physics experiments and material science studies. In recent years we have performed these experiments at explosive test sites in New Mexico and Nevada. In 2011, we re-established an explosive pulsed power test facility closer to Livermore. LLNL's Site 300 is a U.S. DOE-NNSA exper...Show More
An investigation aimed at optimizing the integration between a capacitor based prime power source and flux-trapping helical flux compression generator (FT-HFCG) is presented. An FT-HFCG simulation code, previously benchmarked with single and multi-pitch generators, was employed to study the kilo-joule class explosive system for this purpose. The details of this effort, which include the optimizati...Show More
The effects of insulation material and methods of fabrication on the performance of compact Helical Flux Compression Generators
Charlie S. Anderson;Andreas A. Neuber;Andrew J. Young;John T. Krile;Mohamed A. Elsayed;M. Kristiansen
Helical Flux Compression Generators, HFCGs, are powerful high current sources for pulsed power applications. Due to the single shot nature of HFCGs, electrical output reproducibility is of great importance. One factor known to contribute to unpredictable performance is mechanical inconsistencies introduced during manufacturing of the stator. In an attempt to minimize these deviations during produc...Show More
COMSED 2 - recent advances to an explosively driven high power microwave Pulsed Power system
Mohamed A. Elsayed;Andreas A. Neuber;John W. Walter;Andrew J. Young;Charlie S. Anderson;Shad L. Holt;James Dickens;Magne Kristiansen;Larry L. Altgilbers
Continued efforts at the Center for Pulsed Power and Power Electronics at Texas Tech University have led to improvements to the design, testing, and performance of a high power microwave (HPM) system, which is sourced by Lithium-ion Polymer batteries, a polypropylene capacitor, and high energetics. An indirectly seeded two-stage helical flux compression generator (HFCG) produces electrical energie...Show More
COMSED 1 — A compact, gigawatt class microwave source utilizing helical flux compression generator based pulsed power
A. Young;A. Neuber;M. Elsayed;J. Korn;J. Walter;S. Holt;J. Dickens;M. Kristiansen;L. L. Altgilbers
2010 IEEE International Power Modulator and High Voltage Conference
Year: 2010 | Conference Paper |
Cited by: Papers (6)
Recent progress in the development of a compact, portable, explosively-driven high power microwave source is presented. The envelope to which the system must fit has a 15 cm diameter, which means each sub-system fits within this dimension, with an optimized overall length. The system includes an autonomous prime energy source, which provides the initial energy for a two-stage, flux-trapping helica...Show More
Performance of a dual-stage helical flux compression generator under varying background gas and pressure
M. Elsayed;A. Neuber;C. Lynn;J. Korn;C. Anderson;A. Young;J. Dickens;M. Kristiansen;L. Altgilbers
2010 IEEE International Power Modulator and High Voltage Conference
Year: 2010 | Conference Paper |
Cited by: Papers (4)
Recent efforts at the Center for Pulsed Power and Power Electronics at Texas Tech University have been focused on the development of a compact and explosively driven High Power Microwave, HPM, system. The primary energy source (other than the seed energy source) driving the microwave load in this system is a mid-sized, dual-stage helical flux compression generator, HFCG. The HFCG has a constant st...Show More
Optimization of a fuse opening switch for a compact power conditioning unit
J. Korn;A. Young;A. Neuber;C. Davis;M. Elsayed;M. Kristiansen;L. L. Altgilbers
2010 IEEE International Power Modulator and High Voltage Conference
Year: 2010 | Conference Paper |
Cited by: Papers (2)
The results from an investigation into the performance of a fuse opening switch, to be used as a component of a compact power conditioning unit, PCU, in an explosively driven high power microwave system, is presented. A pulse forming network designed to mimic the current action of a flux compression generator is utilized for these experiments. The investigation focused on the effect of altering fu...Show More
Optimizing wire parameters in exploding wire arrays
C. Davis;A. Neuber;J. Stephens;A. Young;J. Dickens;M. Kristiansen
2010 IEEE International Power Modulator and High Voltage Conference
Year: 2010 | Conference Paper |
Cited by: Papers (9)
Exploding wire arrays as fast switches are of interest for explosive pulsed power applications utilizing magnetic flux compression. This type of opening switch has proven effective in producing pulses of several hundred kilovolts into vacuum diode loads. The research presented here discusses an exploding wire array capable of producing single digit kilo-joules, 100 nanosecond pulses when driven by...Show More
Modeling and Simulation of Simple Flux-Trapping FCGs Utilizing PSpice Software
A novel modeling and simulation method for flux-trapping flux-compression generators (FT-FCGs) is presented, which utilizes PSpice circuit-simulation software to solve complex differential equations derived from circuit analysis. The primary motivation for the model development is the desire for a technique to rapidly design and prototype FT-FCGs for use as drivers in high-power microwave sources....Show More
Stand-alone, FCG-driven High Power Microwave system
A. Young;A. Neuber;M. Elsayed;J. Walter;J. Dickens;M. Kristiansen;L.L. Altgilbers
An explosively driven High Power Microwave (HPM) source has been developed that is based on the use of a Flux Compression Generator (FCG) as the primary driver. Four main components comprise the HPM system, and include a capacitor-based seed energy source, a dual-staged FCG, a power conditioning unit and an HPM diode (reflex-triode vircator). Volume constraints dictate that the entire system must ...Show More
Design of a compact power conditioning unit for use with an explosively driven high power microwave system
J. Korn;A. Neuber;A. Young;C. Davis;M. Kristiansen;L.L. Altgilbers
The generation of high power microwaves using explosively driven pulsed power is of particular interest to the defense community. The high energy density of explosives provides the opportunity to design pulsed power systems which occupy significantly less volume, yet provide the same output power, as traditional methods of high power microwave (HPM) production. Utilizing a flux compression generat...Show More
Optimizing power conditioning components for a Flux Compression Generator using a non-explosive testing system
C. Davis;A. Neuber;A. Young;J. Walter;J. Dickens;M. Kristiansen
This paper discusses a non-explosive pulsed power device used to reproduce the output waveforms of a Flux Compression Generator (FCG) driving a High Power Microwave (HPM) source. This system optimizes the power conditioning components of a HPM source while reducing the time and resources inherent to explosively driven FCG schemes. An energy storage inductor, fuse opening switch, and a peaking gap ...Show More
Optimization of an FCG-Based High-Power Microwave System Using Nonexplosive Pulsed Power
Cole B. Davis;Andreas A. Neuber;Andrew Young;John Walter;James C. Dickens;Magne Kristiansen
This paper presents a nonexplosive pulsed-power system that replicates the output current waveform of a flux compression generator (FCG). The primary purpose of this system is to efficiently test the power conditioning components of an explosively driven HPM system, while drastically reducing the time between tests which are inherent with explosive experiments. The power conditioning system (PCS) ...Show More
A Compact, Self-Contained High Power Microwave Source Based on a Reflex-Triode Vircator and Explosively Driven Pulsed Power
A. Young;T. Holt;M. Elsayed;J. Walter;J. Dickens;A. Neuber;M. Kristiansen;L.L Altgilbers;A.H. Stults
2008 IEEE International Power Modulators and High-Voltage Conference
Year: 2008 | Conference Paper |
Cited by: Papers (7)
Single-shot high power microwave (HPM) systems are of particular interest in the defense industry for applications such as electronic warfare. Virtual cathode oscillators (vircators) are manufactured from relatively simple and inexpensive components, which make them ideal candidates in single-shot systems. The flux compression generator (FCG) is an attractive driver for these systems due to its po...Show More
High-Current Compact FCG Seed Source Implementing Solid State Switching
M. Elsayed;T. Holt;A. Young;A. Neuber;J. Dickens;M. Kristiansen;L.L. Altgilbers;A.H. Stults
2008 IEEE International Power Modulators and High-Voltage Conference
Year: 2008 | Conference Paper |
Cited by: Papers (2)
Flux Compression Generators (FCGs) are some of the most attractive sources of single-use compact pulsed power available today due to their high energy density output and mobility. Driving FCGs requires some seed energy, which is typically provided by applying a high seed current, usually in the kilo-Ampere range for mid-sized helical FCGs. This initial current is supplied by a high-current seed so...Show More
Images From the Development of a High-Power Microwave System
Thomas A. Holt;Andrew J. Young;Mohamed A. Elsayed;John W. Walter;Andreas A. Neuber;M. Kristiansen
A recently developed self-contained compact single-shot high-power microwave (HPM) system was tested and characterized. The explosive-driven system utilizes a reflex triode virtual cathode oscillator (vircator) as the HPM source. An open-shutter image acquired with a digital single-lens reflex camera during operation was used to show plasma development extending beyond the anode-cathode gap of the...Show More
Fuse and load testing with mid-sized, high energy density flux compression generators
A. Young;T. Holt;M. Elsayed;A. Neuber;M. Kristiansen;L.L. Altgilbers;A.H. Stults
2007 16th IEEE International Pulsed Power Conference
Year: 2007 | Conference Paper |
Cited by: Papers (1)
Compact Pulsed Power Systems (CPPSs) require power sources that are small in size yet can produce the necessary electrical energy required to drive a given load. Helical Flux Compression Generators (HFCGs) are attractive for single shot applications due to their rapid conversion of chemical energy to electrical energy. Mid-sized generators occupy little total volume (∼4,000-cm3 total with a compre...Show More
Investigation of an FCG and pulse transformer based power conditioning system
Thomas A. Holt;Andrew J. Young;Mohammed A. Elsayed;Andreas A. Neuber;M. Kristiansen;Kevin A. O'Connor;Randy D. Curry
2007 16th IEEE International Pulsed Power Conference
Year: 2007 | Conference Paper |
Cited by: Papers (6)
A cooperative effort was initiated between Texas Tech University and the University of Missouri-Columbia to develop a single-shot power conditioning system to drive an RF load. The purpose of the system is to convert prime power to an output capable of driving a load with an impedance ranging from 15 to 30 Ohms. A Helical Flux Compression Generator (HFCG) was chosen as the electrical energy amplif...Show More
Investigation of an FCG and Pulse Transformer Based Power Conditioning System
Thomas A. Holt;Andrew J. Young;Mohammed A. Elsayed;Andreas A. Neuber;M. Kristiansen;Kevin A. O'Connor;Randy D. Curry
2007 IEEE 34th International Conference on Plasma Science (ICOPS)
Year: 2007 | Conference Paper |
Cited by: Papers (1)
Summary form only given. A cooperative effort was initiated between Texas Tech University and the University of Missouri-Columbia to develop a single-shot power conditioning system. The purpose of the system is to convert prime power to an output capable of driving a load with an impedance ranging from 15 to 30 Ohms. A helical flux compression generator (HFCG) was chosen as the electrical energy a...Show More
Fuse and Load Testing with Mid-Sized, High Energy Density Flux Compression Generators
Andrew J. Young;Thomas A. Holt;Mohamed A. Elsayed;Andreas A. Neuber;M. Kristiansen;L.L. Altgilbers;A.H. Stults
2007 IEEE 34th International Conference on Plasma Science (ICOPS)
Year: 2007 | Conference Paper |
Cited by: Papers (1)
Compact pulsed power systems require power sources that are small in size yet can produce the necessary electrical energy required to drive the system. Helical magnetic flux compression generators (HFCGs) are attractive for single shot applications due to their rapid conversion of chemical energy to electrical energy. The small total volume of a generator coupled with the energy density of the fas...Show More
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