Architectural diagram - HB-2 Cryogenic Experiment, public domain image

The HB-2 Cryogenic Experiment investigated the effect of low temperature and high radiation on various metals for potential use in space vehicles. The experiment consisted of a refrigeration system, a transfer system, and devices for measuring the strain resulting from radiation and temperature extremes. Four cryostats (or test loops) were used to measure tensile- fatigue compression. Each cryostat was six inches in diameter and nine feet long. One could be set up on the floor of quadrant D, inserted into the core through the HB-2 beam port, and transferred remotely to the hot cave on the outside of the quadrant for removal of the specimen...Image # : CS-18942