The Negative Triangularity Spherical Tokamak
The Negative Triangularity Spherical Tokamak (NTST), entirely independently designed
and constructed by ENN, aims to validate the physical properties of a fusion reactor with an inherently
negative triangularity plasma configuration and leverage the engineering advantages of a negative
triangularity spherical tokamak. Furthermore, NTST’s magnet fabrication techniques, vacuum vessel
structure, and cryogenic cooling methods closely resemble those of the next-generation fusion-grade
spherical tokamak, CTRFR-1. By rapidly constructing and operating NTST, ENN will validate key fusion
reactor technologies related to magnets, vacuum systems, cryogenics, power supplies, control systems,
and heat exhaust, thereby paving the way for the construction of CTRFR-1.

NTST Key Parameters
Major radius: 0.8 m
Minor radius: 0.5 m
Toroidal magnetic field: 1 T
Plasma current: 1 MA
Ion temperature: 5 keV