The Sadoulet group laboratories are located in the basement of New LeConte, in rooms 79, 81, 85 and 86. As a low temperature lab we are defined by our dewars, listed below.

The 75 Fridge

The group's central research cryostat is the "75 Fridge", a 75µW ³He/⁴He dilution refrigerator housed in 79 LeConte Hall. This fridge is a veteran of two decades and more than 360 thermal cycles.

The 75 Fridge is used to cool massive bolometers and other test devices down to temperatures near 30 mK. It is our primary device for detector characterization.

For more details, see our 75 Fridge page.

The IR Dewar

The "IR dewar" is a liquid nitrogen / liquid helium cryostat, designed to cool test payloads down to 4 K. It doesn't reach the low temperatures attainable with the dilution refrigerator, but it can be brought from room temperature to 4K and back in less than a day. This is our primary device for testing cold hardware and electronics.

For more details, see our cold hardware page.