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Vacuum switch performance in a 1.2 MJ pulse forming network.

David W Scholfield¹, Michael D Butcher, Brian Hilko

¹Science Applications International Corporation, 2445 Alamo Ave. SE, Albuquerque, New Mexico 87106, USA.

The Review of Scientific Instruments

|March 5, 2008

Summary

This summary is machine-generated.

SAIC developed a compact vacuum switch for pulsed power applications. This high-current switch handles over 300 kA and 150 C, offering a triggerable solution for demanding energy control needs.

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Area of Science:

Electrical Engineering
Pulsed Power Systems
Plasma Physics

Background:

Vacuum switches are crucial for controlling high currents in pulsed power systems.
Advantages include mitigated mechanical shock, low erosion, and rapid recovery.
Drawbacks involve vacuum systems and metal vapor sputtering, limiting switch lifespan.

Purpose of the Study:

To describe the development of a novel compact vacuum switch.
To highlight its capabilities in high-energy current pulse conduction.
To address limitations of existing vacuum switching technologies.

Main Methods:

Development of a compact vacuum switch design.
Testing of the switch's current carrying capacity and pulse duration.
Evaluation of switch performance under high-energy conditions, including total charge and action (A^2s).
Assessment of trigger voltage requirements and operational lifespan.

Main Results:

The developed switch conducts peak currents exceeding 300 kA for approximately 0.5 ms.
It successfully switched 150 C per pulse with an action integral up to 3.65x10^7 A^2s.
The switch demonstrated a lifespan of up to 20 pulses at high magnitudes.
Triggering is effective at potentials as low as 80 V.

Conclusions:

The compact vacuum switch offers robust performance for high-energy pulsed power applications.
It overcomes some limitations of traditional vacuum switches, showing promise for advanced systems.
Further development could enhance lifespan and broaden applicability in demanding electrical discharge scenarios.