A 100 GW, 100 ps solid-state pulsed power system based on semiconductor opening switch generator and magnetic...

Area of Science:

• Electrical Engineering
• Plasma Physics
• Pulsed Power Systems

Background:

• High-power picosecond pulse generation is crucial for various scientific and technological applications.
• Existing systems face limitations in peak power and pulse duration.
• Solid-state approaches offer potential advantages in reliability and scalability.

Purpose of the Study:

• To develop a high-power solid-state picosecond system using the SOS + MCL approach.
• To investigate the pulse compression and power amplification capabilities of Magnetic Compression Lines (MCLs).
• To achieve record-high rise rates for voltage, current, and power.

Main Methods:

• Utilized a Semiconductor Opening Switch (SOS) generator to produce an initial high-power pulse.
• Employed a series of four Magnetic Compression Lines (MCL1-MCL4) for pulse compression.
• Incorporated ferrite rings and external magnetic fields within coaxial MCLs.
• Filled lines with pressurized transformer oil.
• Developed numerical models to simulate MCL operation and analyze gyromagnetic precession effects.

Main Results:

• Achieved a peak power of 100 GW and a pulse duration of 100 ps at the output.
• Obtained a voltage rise rate of 27 MV/ns and a power rise rate of 2 TW/ns at a 48 Ω load.
• Generated a current pulse with 100 kA amplitude and a rise rate of 1.18 MA/ns in a 7 Ω line.
• Confirmed that pulse duration correlates with the double transit time of electromagnetic waves within the MCLs.

Conclusions:

• The developed SOS + MCL system successfully generates high-power picosecond pulses with unprecedented characteristics.
• Magnetic Compression Lines are effective for significant pulse compression and power amplification.
• Numerical models provide valuable insights into the internal dynamics and influencing factors, such as gyromagnetic precession, within MCLs.