Cryogenic Plant
The cryogenic plant keeps the superconducting magnets at operating temperature, a precondition for reaching and holding 16.84 T.
Cold enough to be superconducting
The high-field magnets are superconducting, which means they must be held at cryogenic temperature to carry current without resistance. The cryogenic plant provides and maintains that cold environment. If the magnets warm past their margin, they cannot hold 16.84 T and can quench.
What the plant does
- Cools the magnets from ambient to operating temperature during commissioning
- Maintains temperature and temperature margin during operation
- Removes heat loads, including nuclear heating from neutrons near the coils
- Supports controlled recovery after any magnet quench
Interaction with the magnet gate
Cryogenic performance is part of magnet commissioning and the magnet gate G2. Verifying temperature margin, how far the conductor sits below its critical temperature, is essential, because margin is what protects the magnet against transient heat and neutron loads at full field.
A pacing utility
The cryoplant is a significant utility load and a commissioning-critical system: the magnets cannot be energized until they are cold and stable. Cooldown itself takes time and is an early commissioning stage. The plant's reliability directly affects machine availability, which matters for foundry operation.
The cryogenic plant is a design for a machine not yet built. Its performance is demonstrated during commissioning as a precondition for the magnet gate and all subsequent operation.