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Expert in Pulsed Power, High Voltage, and Power Electronics
Available for your Consulting and Expert Witness Needs
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Summary of Expertise:
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Listed with other top experts in: |
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Expert has over 27 years of industrial pulsed power experience working on a variety of pulse generators/power systems and rep-rated modulators to deliver high voltages (kV and MV levels) and high average power levels (kW to MW). These systems have varied from highly specialized/customized single quantity systems to modules/systems that were mass produced (1000's of units) to support extremely demanding applications such as semiconductor photolithography. His expertise is primarily in HV power systems utilizing solid-state switching and magnetic pulse compression to deliver very fast risetime HV pulses for applications such as gas discharge lasers, etc. Other capabilities include solid-state, magnetic, line-type, and hard tube modulators for pulse generation. He has successfully utilized Marx generator and pulse transformer technology to obtain voltage multiplication and output voltages of > 1 MV. He is well versed in the following HV switching technologies including: IGBTs, SCRs, MOSFETs, spark gaps, thyratrons, ignitrons, and vacuum tubes. Pulse forming/shaping and risetime sharpening techniques can be employed to achieve the specific pulse parameters required by the application. He has experience with a number of different HV charging technologies including resonant charging, pulse charging, phase control, and high frequency switching power supply systems. He is capable of developing high voltage and pulsed power diagnostics and control/interlock/interface electronics. By optimizing the system electrical insulation design, he can customize the system mechanical design and packaging for minimum size and weight. He also specializes in printed circuit board design and layout for high voltage and power applications. He is well acquainted with using QuickField FEA software for modeling electric fields for high voltage insulation and component design as well as thermal modeling and electronics cooling system design (e.g. forced liquid/air).
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Show Secondary and Basic Areas of Expertise | Localities:
Expert may consult nationally and internationally, and is also local to the following cities: Los Angeles, California;
San Diego, California;
Long Beach, California;
Santa Ana, California;
Anaheim, California;
Riverside, California;
Glendale, California;
Huntington Beach, California;
San Bernardino, California;
and Chula Vista, California.
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Degree |
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Subject |
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Institution |
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1983
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M.S.
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Electrical Engineering
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Texas Tech University
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1981
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B.S.
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Electrical Engineering
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Texas Tech University
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Department |
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Title |
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Responsibilities |
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2009 to
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(Undisclosed)
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President
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Consulting and development projects for a variety of defense and commercial companies and technologies. Systems include (but not limited to) thyratron modulators, capacitor charging power supply systems, magnetic switch designs, fast risetime solid-state pulse generators, laser diode drivers, solid-state Marx generators, non-linear transmission lines, etc.
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1995 to 2009
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Cymer Inc.
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SSPPM Engineering
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MTS Engineer
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Company subject matter expert on pulsed power and power electronics.
Project Engineer for guiding technical development of XLA-300 (and XLR-500) 6 kHz MOPA laser power system.
Developed critical technologies for water cooled thermal management of 6 kHz magnetic switch assemblies (U.S. Patent 7,002,443), coaxial cable with Litz wire center conductor and corresponding connector designs (patent pending), and electrical stress controlled HV cable termination design.
Supported technical development of higher power, XLX-200, 6 kHz, SSPPMs for broadband lasers used in flat panel annealing applications.
Responsible for entire power system design to support development of a Dense Plasma Focus (DPF) system as an Extreme Ultraviolet (EUV) light source for Next Generation Lithography. System highlights included:
High Voltage Power Supply (HVPS), Command Resonant Charging System with De-Qing, SSPPM Pulse Generator and Magnetic Pulse Compressor, and a separate Pre-Ionization System.
Developed 20 J/pulse DPF SSPPM power system and demonstrated operation at 5 kHz burst, 2.5 kHz continuous duty cycle (limited by thermal management of load electrodes).
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1983 to 1995
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Maxwell Technologies
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Pulse Power Technology and Product Development
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Technical Group Leader
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Program Manager and Technical Leader for a $1.4M compact pulse generator program for High Power Microwave (HPM) applications.
Program Manager and Technical Leader for a $6.1M program for the Superconducting Supercollider (SSC) Laboratories comprising 16 pulsed thyratron modulators for driving two types of klystrons in the linac portion of the accelerator.
Program Manager and Technical Leader for a $2M, 600 kV, 870 A, 50 Hz, 350 kW average power pulsed thyratron modulator for HPM device research.
Principal Engineer for design of 7.2 MW (average power), 120 kV hard tube regulators on Boeing RF Free Electron Laser program.
Principal Engineer on a program to develop a 750 kV, 3 kJ, 20 , compact (200 pounds, 25 ft3) pulser system with 15 kW charging power supply.
Project Engineer for a 0.5 MW (average power), 60 kHz, rep-rated solid-state modulator and high voltage power supply system designed and delivered to LLNL Laser Isotope Separation Program.
Obtained DOE Q clearance.
Responsible for design, construction, checkout, and operation of a 24-channel CAMAC digitizer, IBM PC based computer-controlled data acquisition system in support of the CHECMATE railgun experiments.
Assisted in integration and checkout of a 1.5 MVA high voltage power supply into the CHECMATE controls system.
Responsible for design, construction, checkout, and operation of a $2.5M, 60-channel, fast digitizer, PDP-11/44 computer-controlled data acquisition system in support of two concurrently-running major experiment facilities (BLACKJACK V and SREMP) studying radiation and EMP effects. System manager and operator for VAX-11/750.
Obtained DOD Top Secret CNWDI clearance.
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1981 to 1983
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Texas Tech University
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Electrical Engineering Department
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Graduate Research Assistant
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Graduate research assistant in pulsed power switching laboratory.
Assisted in construction, modification, and testing of several spark gap switches, pulse forming networks, vacuum systems, and diagnostic equipment for mass spectrometry, spectroscopy, and streak photography.
Configured and operated a computerized CAMAC data acquisition system for use with high voltage and high current probes.
Built and tested a small (1 m. long) railgun.
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Associations/Societies
Senior Member of IEEE
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Professional Appointments
Appointed to the Texas Tech University Electrical and Computer Engineering Industrial Advisory Board in 2010.
General Conference Chair for 2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC).
Technical Program Chair for 2010 IEEE IPMHVC.
Session Chairman at numerous IEEE Pulsed Power and Power Modulator conferences from 1991 to present.
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Awards/Recognition
He was inducted into the Texas Tech University Electrical and Computer Engineering (ECE) Academy in 2010.
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Publications and Patents Summary
Expert has over 40 technical publications in conference proceedings and refereed technical journals. In addition, he also has 44 U.S. patents as well as a number of international patents.
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| Government Experience: |
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Description |
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2010 to 2010
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U.S. Air Force
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Contractor
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Expert's Firm was awarded a Phase I STTR Contract.
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| Selected Consulting Examples: |
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Expert consulted for Optiswitch Technology Corp. to assist with development testing of their laser diode driver.
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Expert developed a 1 kV Pulsed Power Supply for ITT Systems in support of their government support contract.
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Expert consulted for Current Audio LLC to address and correct issues with their surge protection device PCB layout and failure during UL testing.
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Expert developed a customized pulse generator for Magnetics Inc. in order to test magnetic cores under fast pulse magnetization conditions and collect and analyze BH loop data.
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Expert designed and delivered a custom pulse generator system in support of electo-optic sensor development at Intevac Inc.
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Recent Client Requests:
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Expert for consulting on Assessment of Electrical Insulation materials.
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| International Experience: |
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Country / Region |
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Summary |
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2010 to 2010
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France
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Expert visited Excico, an excimer laser company in France to consult on a laser power supply system.
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2009 to 2009
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Canada
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Expert visited General Fusion in order to consult on their pulsed power designs.
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Education
