The laboratory door was interlocked such that the laser would shut down
immediately should the door open. The interlock was also connected to flow
meters in the water cooling circuit to prevent overheating should the water
pressure drop. When not in alignment mode, the beam path was completely
enclosed. Points in the beam path of very high intensity (such as the foci
of telescopes) were enclosed in pipes. The CO2 laser is pumped by an 2kW
RF D1000L power supply. The RF supply is in turn powered by a 35V, 60A
Agilent 6573A DC power supply.