Compact high-current pulse generator for laboratory studies of high energy density matter

Area of Science:

• Physics
• Engineering

Background:

• Studying warm dense matter requires specialized high-current pulse generators.
• Existing equipment may lack compactness, mobility, or sufficient power for university laboratory settings.

Purpose of the Study:

• To design and present the parameters of a compact and mobile high-current pulse generator.
• To enable warm dense matter research in university laboratories.

Main Methods:

• The generator utilizes four parallel-connected "bricks," each with low-inductance capacitors and a multi-gap, multichannel ball gas spark switch.
• Capacitively coupled triggering with a high-amplitude, fast-rise-time pulse is employed.
• The system is designed for compact dimensions (550 × 570 × 590 mm³) and a weight of approximately 70 kg.

Main Results:

• The generator produces a ~155 kA current pulse with a ~220 ns rise time into a ~15 nH inductive load at a ~70 kV charging voltage.
• A ~90 kA current pulse is achieved during the underwater electrical explosion of a copper wire.

Conclusions:

• The developed generator is a compact, mobile, and effective tool for high-current pulse generation.
• It is suitable for warm dense matter studies in university laboratory environments.