The GM refrigerator cools the nitrogen gas stream. Technology Transfer Developed for NASA to test gas sensors, this proven technology has now been transferred for use in crystallography.
Warm gas is cooled by the two refrigerator heat stations.
Works with nitrogen or helium gas. A compressor circulates helium gas to and from the refrigerator. This compressed gas is cooled by expansion, providing heat removal at the two refrigeration stations. Heat exchangers attached to the refrigerator stations cooldown the gas stream used to cool the samples. Push the compressor ON button 4.