HelioxVL

- Base temperature: 240 mK
- Cooling power at 282 mK: 40 μW
- Cooling time from room temperature to base temperature: ∼40 minutes
- Hold time at base temperature: ∼70 hours
- Wiring:
2 microwave lines
2 shielded twisted pairs
2 x S1 coax lines
- Temperature range: 240 mK - 300 K

Fig. 1.
The Heliox lab. From left to right: Heliox insert (hanging on the rope). Helium dewar to dip insert. Rack cabinet with the generators and the oscilloscope. Acqusition computer.

Fig. 2.
Layout view of the sample holder for Heliox and Triton. From top to bottom: calibrated thermometer (copper tube), copper cover of the board, PCB with the slot for the sample, copper stage for thermal anchoring.

Fig. 3.
The assembled sample holder with current and voltage measurement boxes (two copper boxes on the right). The calibrated thermometer and the boxes are connected to filters (long tubes). Coaxial cable is the main line that delivers fast signals to the sample.