Division of accelerators, cryogenics and magnetism

Technical means

• Double bath cryostat with Hampson exchanger and without nitrogen shield,
• The bath at T=4.2 K is supplied by dewar,
• Pumping group composed of a 300 m³/h vane pump, a 1000 m³/h Roots pump and a 2000 m³/h Roots pump,
• Automated cryostat control system (helium transfer, helium level, test bath at 1 mK and maximum power of 15 W),
• Multi-channel fast data acquisition system (333 kHz / number of channels).

Measurement accuracy:

• Absolute temperature measurements with an accuracy of ± 5 mK at superfluid helium temperatures,
• Temperature difference measurements with an accuracy of ± 1 mK at superfluid helium temperatures,
• Pressure measurements with an accuracy of ± 5 Pa at superfluid helium temperatures,
• Power measurements with an error smaller than 1%.

Achievements, related projects

• Heat transfer measurements through Nb3Sn conductor insulation in the framework of the «Next European Dipole» project,
• Heat transfer measurements through stacks of superconducting cables, Kapitza resistance measurements of epoxy resin/fiberglass composite material in the framework of the EuCard-1 project,
• Heat transfer measurements through small ducts for the "Thermal Studies" contract with CERN,
• Kapitza resistance measurements on polymer.

This plateform is proposed to Transnational access in the framework of the EURO-LABS – EUROpean Laboratories for Accelerator Based Science project. To know how to apply, visit the EURO-LABS website.

It is also available for external users thanks to the AMICI collaboration.

Contact: