On the other hand, a cryopump could use waste heat from the rover's normal power-generating operations to directly melt the ice and snow the Hopper landed on and absorb that into a heating chamber ...
For example, a cryopump will have a much higher water vapor pumping speed than a turbomolecular pump, even though both pumps might have exactly the same nitrogen speed. Mechanical vacuum pumps may ...
In the 1980's both SHI and APD launched higher capacity 10K coolers for the cryopump market in Japan and for diagnostic imaging systems in Europe. In 1993, the engineering team at APD developed ...