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Ultra-Fast Generator for Impact Ionization Triggering

Barrio Montañés, A. A. del; Dutheil, Y.; Kramer, T.; Sack, M.; Senaj, V.

Abstract:

Impact ionization triggering can be successfully applied to standard thyristors, thus boosting their dI/dt capability by up to 1000x. This groundbreaking triggering requires applying significant overvoltage on the anode-cathode of thyristor with a slew rate > 1kV/ns. Compact pulse generators based on commercial off-the-shelf (COTS) components would allow the spread of this technology into numerous applications, including fast kicker generators for particle accelerators. In our approach, the beginning of the triggering chain is a HV SiC MOS with an ultra-fast super-boosting gate driver. The super boosting of a 1.7kV rated SiC MOS allows to reduce the MOS rise time by a factor of > 25 (datasheet tr = §I{20}{ns} vs. measured tr < 800ps, resulting in an output voltage slew rate > 1kV/ns and an amplitude > 1kV. Additional boosting is obtained by a Marx generator with GaAs diodes, reaching an output voltage slew rate > 11kV/ns. The final stage will be a Marx generator with medium size thyristors triggered in impact ionization mode with sufficient voltage and current rating necessary for the triggering of a big thyristor. This paper presents the impact ionization triggering of a small size thyristor.


Zugehörige Institution(en) am KIT Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM)
Publikationstyp Poster
Publikationsjahr 2022
Sprache Englisch
Identifikator KITopen-ID: 1000149675
HGF-Programm 38.05.01 (POF IV, LK 01) Anthropogenic Carbon Cycle
Veranstaltung 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12.06.2022 – 17.06.2022
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