The Evaporator, Continued
Here's an actual photograph of the evaporator. Asetek has certainly done a pretty eye-appealing design.
Inside the 'clam shell' you find a lot of insulation material and the actual copper-made evaporator itself plus a thermal sensor attached to it, which feeds the ChillControl with actual temperature information of the evaporator.
After installation the evaporator sits right on top of the processor die. It is just about as thick as a finger and about an inch high. Although that may not be big at all you can certainly still imagine how much larger it is than the CPU-die it is supposed to cool. This situation resembles one of the Vapochill's current problems, because such a comparably huge piece of copper can easily smash a little processor-die if it is not handled carefully enough.