Magnet Installation & Alignment
The high-field plug and central-cell coils are set, aligned to the magnetic axis, and prepared for cryogenic cool-down.
The magnet system defines Aegis. Two high-field plug coils (26.49 T class) confine the ends, the central-cell coils shape the long burn region, and the throat/expander coils (17 T at the throat) transition to the direct converter. Installation sets these coils to a common magnetic axis and prepares them for superconducting operation.
Axis alignment
Alignment is the governing activity. Each coil assembly is positioned so its field center lies on the design axis within tolerance. Optical and laser survey references, established during civil works, are carried through coil setting. Because superconducting coils shrink on cool-down, the warm-set position is offset to land on-target cold.
Superconducting readiness
- Coil terminations and current leads connected to the cryoplant
- Quench-detection and protection instrumentation verified
- Structural restraints checked for magnetic and thermal loads
- Vacuum and thermal-shield closure around each cold mass
From warm to cold
After setting, coils are not energized until the cryostat is closed, evacuated, and the cold mass is at operating temperature. The plug coils carry the highest field and the highest stored energy, so their protection systems — quench detection and controlled discharge — are commissioned before any high-current test.
These procedures target the frozen magnet parameters (26.49 T plug, 17 T throat, 8 T on-axis central-cell class). The machine is a design study; installation and alignment are engineered and simulated, not yet performed on hardware.