Nuklearfusion: Iter vervollständigt das größte und mächtigste gepulste Magnetsystem der Welt

ITER Completes World’s Largest Pulsed Superconducting Magnet System

ITER has completed all components for the world’s largest and most powerful pulsed superconducting electromagnet system, a landmark achievement for fusion energy development[1]. This system will serve as the electromagnetic heart of ITER’s donut-shaped Tokamak reactor, designed to demonstrate fusion as a viable energy source[1].

## Key Technical Achievements

– The final component delivered was the sixth module of the Central Solenoid, built in the United States[1]
– The fully assembled magnet system will weigh nearly 3,000 tons[1]
– The system will heat plasma to 150 million degrees Celsius, ten times hotter than the sun’s core[1]
– ITER is designed to produce 500 megawatts of fusion power from only 50 megawatts of input power-a tenfold energy gain[1]

## Major Components and Specifications

**Central Solenoid:**
– Height: 18 meters (59 feet)
– Diameter: 4.25 meters (14 feet)
– Weight: ~1,000 tons
– Magnetic field: 13 Tesla (280,000 times Earth’s magnetic field)
– Stored energy: 6.4 Gigajoules[1]

**Poloidal Field Magnets:**
– Diameters ranging from 9 to 25 meters
– Weight: 160 to 400 tons each
– Built by Russia, Europe, and China[1]

**Toroidal Field Coils:**
– Size: 17 meters high × 9 meters wide
– Weight: ~360 tons each
– Fabricated in Europe and Japan[1]

## International Collaboration

The project represents successful collaboration between ITER’s seven members: China, Europe, India, Japan, Korea, Russia, and the United States[1]. Each country contributes specific components:

– Europe (Host): 45% contribution, including four Poloidal Field magnets and 10 Toroidal Field magnets[1]
– United States: Central Solenoid and support structures[1]
– Russia: Upper Poloidal Field magnet and superconductors[1]
– China: Lower Poloidal Field magnet, superconductors, and 18 Correction Coil magnets[1]
– Japan: Superconductor strand and 8 Toroidal Field magnets[1]
– Korea: Assembly tooling, thermal shields, and vacuum vessel sectors[1]
– India: 30-meter Cryostat, cooling systems, and other components[1]

## Project Status

ITER reached 100% of its construction targets in 2024 and is now in assembly phase[1]. In April 2025, the first vacuum vessel sector was installed ahead of schedule[1]. The project is also actively engaging with the private sector to accelerate fusion energy development through knowledge transfer initiatives[1].