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Capacitor blocks for linear transformer driver stages.

B M Kovalchuk¹, A V Kharlov¹, E V Kumpyak¹

¹Institute of High Current Electronics, Tomsk 634055, Russia.

The Review of Scientific Instruments

|February 13, 2014

Summary

New Linear Transformer Driver (LTD) stages utilize air insulation and a custom capacitor block for improved performance. Testing focused on lifetime and self-breakdown probability for these advanced energy storage components.

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Area of Science:

High-energy physics
Pulsed power technology
Electrical engineering

Background:

Linear Transformer Driver (LTD) technology enables fast output voltage pulses by integrating energy storage and switches into individual stages.
Recent advancements include LTD stages using air for insulation and as the working gas in spark gap switches.
A custom capacitor block serves as a key structural element for these transformer stages.

Purpose of the Study:

To detail the design and operation of custom-designed capacitor blocks for air-insulated LTD stages.
To evaluate the lifetime and self-breakdown probability of modified capacitor blocks.
To present numerical simulations of electric fields within the LTD switches.

Main Methods:

Development of a custom capacitor block integrating two 40 nF, 100 kV capacitors and a multichannel multigap gas switch.
Testing of multiple capacitor block modifications for performance evaluation.
Assembly and testing of capacitive modules, each comprising five capacitor blocks.
Numerical simulations of electric fields within the spark gap switches.

Main Results:

Several modifications of the capacitor blocks were developed and subjected to rigorous testing.
Tests assessed the operational lifetime and the probability of self-breakdown for the capacitor blocks.
Capacitive modules, consisting of five blocks, were tested to evaluate their performance in an assembled configuration.

Conclusions:

The custom-designed capacitor blocks are integral to the development of air-insulated LTD stages.
Testing provided crucial data on the reliability and breakdown characteristics of the capacitor blocks.
The study contributes to the advancement of LTD technology through detailed design and experimental validation.