Compact megajoule-class pulsed power supply for generating long-pulsed magnetic fields

A pulsed power supply with a compact and low-cost electric-double-layer-capacitor (EDLC) is developed for generating pulsed magnetic fields with a long pulse duration of a few seconds. The system is demonstrated in three experimental setups using a 10.7 F- or 50 F-EDLC capacitor bank. By using the 10.7 F-EDLC capacitor bank with a 27 mm wide-bore magnet, the pulsed magnetic field with a peak field strength of 24.3 T and a pulse duration of similar to 1 s is generated. The field profiles are reproduced in the theoretical calculations taking Joule heating into account. The calculations are also used to discuss possible variations of the field profile for future investigations.

Automated summary

A pulsed power supply with a compact and low-cost electric-double-layer-capacitor (EDLC) is developed to generate pulsed magnetic fields with a long pulse duration of a few seconds. The system is demonstrated in three experimental setups using a 10.7 F- or 50 F-EDLC capacitor bank, achieving a peak field strength of 24.3 T and a pulse duration of around 1 second. Theoretical calculations are used to reproduce field profiles and discuss potential variations for future investigations.