Helium-3 Probe

Single-shot 3He System from Cryo Industries

The H3 Probe has a 290 mK to 300 K operating temperature range. with a 6 hour hold time at 290 mK with 100 µW thermal load.

It is equiped with:
a CalFit Cernox sensor (1.4 K to 300 K) installed on 4He 1K pot.
Non Calibrated Cernox temperature sensor installed on charcoal sorption pump.
Calibrated RuO2 temperature sensor (50 mK to 20 K) on sample mount.
Ten twisted pairs for electrical contact to samples.
Lakeshore Model 340 Autotune Temperature Controller with four sensor inputs. 3.5 cfm pumping station.
In situ manual rotation: copper sample holder -10 to 100 degrees from vertical.