HL-2A/HL-2M Tokamak

Intelligence Summary: HL-2A/HL-2M Tokamak

Node Identity: The HL-2A and HL-2M tokamaks at the Southwestern Institute of Physics (SWIP) in Chengdu are China's medium-scale tokamak experiments, serving as complementary platforms to the EAST tokamak at ASIPP/Hefei. HL-2A began operation in 2002 as China's first divertor tokamak, while HL-2M (upgraded from HL-2A) features significantly enhanced heating power, advanced divertor configurations, and improved plasma control systems. These facilities provide experimental data on plasma stability, confinement, and heating that is directly transferable to FRC and compact toroid research programs.

Strategic Relevance: The HL-2A/HL-2M tokamaks contribute to the FRC weapons program through three technical pathways. First, their NBI heating systems provide operational experience with neutral beam injection — the primary plasma heating method for both tokamaks and FRC devices. The NBI expertise developed on HL-2M directly informs the NBI heating design for HUST's HFRC facility. Second, HL-2M's advanced divertor configurations produce data on plasma-material interactions and edge plasma behavior, relevant to both fusion reactor design and FRC weapon effects on targets. Third, the plasma diagnostics suite on HL-2M — including Thomson scattering, charge exchange spectroscopy, and bolometry — provides design references for the diagnostic systems needed at HFRC and CAE's FRC pulsed neutron source facility.

Technical Focus / Capabilities:

• NBI Heating Systems: HL-2M features upgraded neutral beam injection with multi-MW heating power — directly applicable to FRC plasma heating and sustainment at HFRC
• Advanced Divertor Configuration: HL-2M's divertor design enables study of plasma-wall interactions and heat flux management — relevant to FRC weapon effects and plasma-target interactions
• Plasma Diagnostics: Comprehensive diagnostic suite including Thomson scattering, charge exchange recombination spectroscopy, and bolometric imaging — transferable to FRC diagnostic systems
• Plasma Stability Studies: Experimental investigation of MHD instabilities, disruption mitigation, and edge localized modes (ELMs) — providing stability insights applicable to FRC tilt and rotational modes
• Current Drive Research: Electron cyclotron current drive and lower hybrid current drive experiments — techniques applicable to FRC current profile control

Network Linkage: HL-2A/HL-2M Tokamak maintains 4 documented connections: operated by SWIP (Southwestern Institute of Physics) (the host institution); uses NBI Heating Research (neutral beam injection systems); uses Plasma Diagnostics Development (diagnostic suite); contributes to D-T Fusion Bridge Program (plasma physics foundation). The tokamak's NBI expertise flows to the HFRC Facility through shared research programs, while its diagnostic capabilities inform FRC experimental design at HUST and CAE.