18th IEEE International Pulsed Power Conference

June 19 - 23, 2011 Hyatt Regency - McCormick Place, Chicago, Illinois

Pulsed Power ConferenceIEEE  Nuclear and Plasma Sciences Society

Plenary and Award Speakers

Michael J. LavanPlenary Speaker, Monday, June 20

Dr. Michael J. Lavan is the Director of the Directed Energy & Missile Defense Technology Directorate of the Space and Missile Defense Technical Center (SMDTC) in Huntsville, AL. SMDTC is the research and development element of the U.S. Army Space and Missile Defense Command/Army Forces Strategic Command. He has held this position since November of 2004. He previously served as the Associate Director of the SMDTC for Missile Defense from June 2001 to November 2004 and as Director, Advanced Technology Directorate of the SMDTC from June 1994 to June 2001. From 1986 to 1994 he was the Director of the Directed Energy Weapons (DEW) Directorate, where he was responsible for the command's programs in neutral particle beams, free electron lasers, beam control and propagation, and space demonstrations of beam weapon technology. Before his selection as Director of DEW, Dr. Lavan was chief of the Ground-Based Laser Division where he was responsible for defining and initiating the free electron laser and beam control programs which grew into the Ground-Based Laser Project at White Sands Missile Range, N.M.

Dr. Lavan has also directed missile defense technology programs in multiple kill vehicle interceptors, distributed radars, wide bandwidth distributed computing, missile materials and directed energy missile defense concept studies.

His current responsibilities are focused primarily on Army efforts in high energy solid state laser devices and systems and on compact high power microwave devices.

Dr. Lavan, who received his Ph.D. in physics from the University of Iowa, is a member of the Association of the United States Army and the Optical Society of America. He has been a member of the Senior Executive Service since 1986. Dr. Lavan has received numerous letters of commendation and awards including the Commander’s Award for Civilian Service, the Achievement Medal for Civilian Service and the rank of Meritorious Executive in the Senior Executive Service.

Georg MuellerPlenary Speaker, Tuesday, June 21

Georg Mueller was born in 1961. He received the Diploma degree in physics and Ph. D. degree from the University of Karlsruhe, Germany, in 1990 and 1999 respectively.

Since 1990, he was with the Research Centre Karlsruhe, where he worked in different research fields including thin film deposition by channel spark, plasma and electron beam diagnostics, development of multi point explosive emission cathodes, transport of large area powerful pulsed electron beams and surface modification by pulsed electron beams (GESA-process).

He is author and co-author of more than 200 publications in peer reviewed journals, conference proceedings and two book chapters. He is member of the European Pulse Power Society, the International Advisory Committees of the HLMC-, BEAMS- and EAPPC- conferences and member of the contact expert group of the European Commission on transmutation and the OECD/NEA expert group on HLM.

Since 2006 he is Deputy Director and Head of the Pulsed Power Department of the Institute for Pulse Power and Microwave Technology at Karlsruhe Institute of Technology (KIT). He is responsible for the development of pulsed power applications in the field of:

Patrick A. CorcoranMarx Award Winner, Wednesday, June 22

Patrick A. Corcoran is a Senior Scientist at L-3 Pulse Sciences where he has roles in both technical leadership and project management. He was first introduced to pulsed power as a summer hire at Pulse Sciences, Inc. (PSI) in 1983 after an internship as a mechanical engineer at the NASA Ames Research Center a year earlier led him to change his major emphasis to Physics. Mr. Corcoran received his B.A. in Physics from San Francisco State University in 1984 and thereafter commenced full time employment at PSI where he has remained employed through its acquisition by the Titan Corporation and later by the L-3 Communications Corporation.

Mr. Corcoran has distinguished himself in the design of large, high power, pulsed machines where his expertise in, and development of, pulse power circuit modeling and simulation have been an essential component. He has authored and coauthored over 50 publications and is the coauthor of a patent. He is a member of the IEEE and is presently serving on the NPSS Pulse Power Science and Technology Committee.

Mr. Corcoran’s work in pulse power technology development includes system design, pulse compression and pulse forming line design, vacuum power flow and diode design, high voltage and high current component design, empirical characterization and prototyping, design validation, and circuit model and code development to support design efforts. He has made a variety of notable and important contributions to the progression of superpower accelerators at Sandia National Laboratories in Albuquerque including Proto 2, Saturn, Z, and Z Refurbishment (ZR) as well as to next generation conceptual designs. He has also made notable contributions to high voltage radiography and is an authority on Inductive Voltage Adder (IVA) design and operation through his work on a progression of machines which have included Hermes 3 and RITS at Sandia, Cygnus at the Nevada National Security Site (NNSS), and Hydrus for AWE in the UK. And he has made notable contributions to other machines including the DARHT 1 and the DARHT 2 injectors at the Los Alamos National Laboratory (LANL), the AIRIX injector for the CEA in France, the NIKE laser at NRL, and FXR at Lawrence Livermore National Laboratory (LLNL).

Mr. Corcoran credits his association with his colleagues at PSI for the opportunity to participate in a wide range of prominent projects and is particularly grateful to Ian Smith, Phil Spence, Lee Schlitt, and Jim Fockler for patiently teaching him the art and science of pulse power.

"Practical Circuit Models and Simulations using Transmission Lines"

Patrick A. Corcoran, L-3 Communications - Pulse Sciences

Computer based circuit simulations of pulsed power systems are now standard practice. Models and simulations are used extensively for design, predicting the performance, and understanding the behavior of pulse power circuits. These tools were not available in the early days of pulse power when even large machines were designed without any simulations, but were gradually introduced as the global information technology revolution unfolded.

Sparked by the difficulty and inefficiency of performing circuit simulations on remote mainframe computers and by the advent of personal computers in the mid-1980s, various groups independently developed circuit modeling codes that could run quickly on the relatively limited local platforms of the time. One such effort was at Pulse Sciences, Inc. (PSI) where a code was developed that used only transmission line and resistor circuit elements. This approach was quite different from alternatives that included lumped elements of pure capacitance and inductance and therefore that required solutions to systems of differential equations. Transmission line based models and simulations have proven to be a natural, accurate, and practical way to represent pulse power circuits and have become the accepted standard within many organizations.

Transmission line (TL) based codes have many features that make them well suited for pulse power applications. TL codes solve quickly with a constant time step because their purely algebraic junction equations are numerically stable. Their simple algorithm enabled relatively small scale code development within the pulse power community where access to the source code continues to enable the ad hoc addition of models that are tailored to pulse power devices like spark gaps, MITLs, and diodes. Circuit topology is not restricted. TL based codes have the ability to model electro-magnetic propagation in 1-D, 2-D and 3-D geometries with the same fundamental transmission line elements, thereby facilitating the creation of seamless circuits containing separate regions with different dimensions.

Transmission line models have been successfully used to design a large number of pulse power machines. These models have been further developed and validated by comparing simulated waveforms to actual machine performance. Examples are presented and described in this talk that represent the variety of transmission line models that have been developed for pulse power circuits.

Roger WhiteHaas Award Winner, Thursday, June 23

Roger White was born on 11th January 1939 in Llwynypia, in the mining valleys of South Wales, UK. At 16, he entered a five year Student Apprenticeship program at the Atomic Energy Research Establishment (AERE) at Harwell, England. There he was trained as an electrical engineer while simultaneously attending Oxford Polytechnic where he was awarded Higher National Certificates in both Electrical and Mechanical Engineering.

AERE employed him in the Plasma Physics Division after he completed his apprenticeship. For AERE he worked on high voltage switching, first at Harwell and at Culham when it was opened in 1962.

In 1964 Roger immigrated to Canada, and spent a year working on satellite systems for RCA in Montreal. He then returned to high voltage engineering at Ion Physics in Boston, where he was first introduced to nuclear weapons simulators in the form of flash X-ray and electromagnetic pulse (EMP) systems.

Roger joined Maxwell Laboratories in San Diego, California, in 1967 and began a 35 year relationship with that company. Roger had the honor to work with many of the original thinkers in the field of Pulsed Power. The long list includes Alan Kolb, Richard Fitch, Richard Miller, John Shannon, John Harrison, Bob Hunter and Jorg Jansen. He made contributions to the Blackjack series of simulators for the Defense Nuclear Agency, and EMP generators for the US Department of Defense and foreign governments. This lead to field installation and commissioning of systems such as Casino at NSWC White Oak, Empress II at Little Creek, Virginia, and systems in France, and in Germany.

At the same time Roger managed up to forty people in the Maxwell Engineering Department. This matrix organization prompted Roger to market and manage programs within the group, as well as to support the engineering needs of the entire company. His last major assignment before Maxwell sold its pulsed power systems business was to manage its group in Albuquerque and win a large contract at the Air Force Research Laboratory.

Roger chaired the 1991 IEEE Pulse Power Conference and was co-chairman of the 1994 BEAMS conference, both in San Diego. He has served on the IEEE Pulse Power committee for twenty years.

Since the purchase by Titan Corporation in 2001 and Titan’s purchase by L-3 Communications in 2005, Roger has directed the operation of the L-3 Pulse Sciences group in San Diego, originally Maxwell’s pulsed power group.

"From Coalminer’s Grandson to Peter Haas Award"

Roger White, L-3 Communications - Pulse Sciences

How did the grandson of a Welsh coal miner become interested in high voltage, and make a career out of what had originally been a curiosity in such technology?

After a five-year student apprenticeship with the UK Atomic Energy Authority, I began work on pulsed power in the field of high voltage switching at AERE Harwell, and later UKAEA Culham in the Plasma Physics Division.

Itchy feet moved me from the UK; first to Montreal, Canada; then to Boston, Massachusetts, to employment at Ion Physics and an introduction to nuclear weapons effects in the form of flash X-ray and EMP simulators. These included the FX100 flash X-ray machine and the Alex EMP simulator both of which were installed at the Air Force Weapons Laboratory in Albuquerque, NM.

My next and final move to San Diego and Maxwell Laboratories allowed me to work with and learn more from the likes of Richard Miller, John Shannon and Richard Fitch than all my previous teachers. I will describe the diversity of programs I have been involved in over a 35-year career at Maxwell which included the Blackjack series of simulators, Casino, and Empress II, to name a few.

This has been followed by the last decade first at Titan Corporation and finally L-3 Communications, Pulse Sciences. There the work has changed somewhat to high average power systems such as particle accelerator hardware for the Spallation Neutron Source at Oak Ridge.