2.2 MJ Capacitor Bank

Intelligence Summary: 2.2 MJ Capacitor Bank at TRINITI

Node Identity The 2.2 MJ (megajoule) capacitor bank is a strategic pulsed-power energy storage system housed at the Troitsk Institute of Innovative and Thermonuclear Research (TRINITI), a Rosatom subsidiary. It represents the critical hardware enabling large-scale theta-pinch coil operations for compact toroid (CT) and field-reversed configuration (FRC) plasmoid formation and compression.

Strategic Relevance Megajoule-class pulsed power is the single most important enabling technology for compact toroid weapons. The U.S. MARAUDER program at Phillips Laboratory used the 9.5 MJ Shiva Star capacitor bank to form, compress, and accelerate compact plasma toroids. TRINITI's 2.2 MJ system represents the Russian equivalent — a scaled-down but operationally significant capability for FRC manipulation. During a PhD defense supervised by Stupitskiy, it was revealed that TRINITI is building a plasma installation "considerably bigger" than the MARAUDER experiment, suggesting this capacitor bank may be a stepping stone toward a larger system. The capacitor bank directly bridges the gap between Russia's civilian fusion research and its weapons-oriented plasma gun program.

Technical Focus / Capabilities The 2.2 MJ capacitor bank stores energy at megajoule scale and discharges it in microsecond-to-millisecond pulses through theta-pinch coils. This discharge creates the extreme magnetic fields (tens of kilogauss) necessary to form and compress high-density FRC/CT plasmoids. The system powers TRINITI's pulsed plasma accelerators and was specifically developed for a compact neutron source experiment using colliding deuterium plasmoids. The energy density and discharge rate are precisely what is required to drive the implosion and acceleration phases of compact toroid formation — the same physics regime as MARAUDER's Shiva Star.

Network Linkage The capacitor bank connects directly to TRINITI (Rosatom) as its host institution, to the Plasmoid Collision Experiment which it powers, and to the broader Pulsed Power Technology and Compact Toroid Acceleration concept nodes. It also links to PPPL through Dr. A. Zhitlukhin's monitoring activities, and to the FRC/Field-Reversed Configuration concept node as a hardware enabler of FRC formation.