Jefferson Lab's accelerator uses niobium cavities to accelerate electrons. In order for the cavities to operate correctly, they must be cooled to very low temperatures.
Insulators are materials that prevent the flow of heat.
In this experiment, three different materials are tested to see how well they insulate. The Pint Containers 1. Remove all labels. Drill a hole near the center of the lid just large enough for the thermometer to fit into. 3. Fill each container with the desired insulator.