Division of accelerators, cryogenics and magnetism

Technical means

• Power supply I < 26 000 A,
• Dedicated Magnet Safety System and Magnet Control System,
• Oblong cryostat (length l = 10 m, width w = 6.5m, hauteur utile h = 2 m),
• Dedicated refrigerator: 490 W at 4.2 K + 3.6 g/s from 50 K to 300 K,
• Data acquisition up to 500 Hz for cryogenic sensors and up to 50 kHz for voltage measurements.  

Additional facility:

The station is located under a crane (m ≤ 32 t).

Technical steps, expertise

• Positioning of the magnet in the cryostat, fluid, energy, diagnostic adjustment and junction,
• Adjustment and tuning of measurement and security chains,
• Check of the magnet behavior at high temperature and / or under vacuum,
• Conditioning of the refrigerator and the high intensity electric supply,
• Cooling of the magnet with monitoring of the parameters,
• Check of the system insulation at low temperature,
• Tests of partial operation before the rise of the nominal current,
• Rise of the nominal current,
• Check of the “quench” behavior (according to the specifications),
• Search for the maximal current or maximal operating temperature (according to the specifications),
• Warming up,
• Check of the magnet at high temperature and / or under vacuum.