Dry dilution refrigerator equipped with demagnetization stage. Based on BlueFors model BF-LD400 dilution refrigerator with 9T superconducting magnet.  DC, RF wiring, cold RF amplifiers, two He filling line for He experiments and He cell implemented in demagnetization stage.

Main characteristics:

• Base temperature: 7 mK (with microwave cabling)

• Mixing chamber cooling power at 100 mK: 550 uW

• Cooling power at 4.2K: >1.3 W

• Cooldown time to base temperature: 58 hours
• Refrigerator cools ³He in the experimental cell down to 160 μK.

Measurement Circuitry and He cell:

• Up to 2 coaxial high frequency output lines

• Up to 4 coaxial (18GHz) attenuated high frequency input lines

• Up to 24 DC measurement lines

• Two He filling lines

Experimental cell for liquid ³He (0.6 mol) embedded inside the top part of the nuclear demagnetization stage.