The fire and safety in the laser hut is covered in the LOSP for the laser hut area, however, in the target area where the laser beam is directed, there is a case where a potential fire hazard exists.
In case the target cell explodes during optical pumping, the temperature
sensors mounted on the target and pumping cells will respond immediately and
an alarm will be triggered. The alarm will be triggered whenever
a temperature reading of any sensor is 10
out of its norminal range.
The target operator should shut off all the lasers immediately.
Based on the tests performed, the target oven will sustain on the order of 10
minutes with full laser power incident and no rubidium atoms
to absorb the laser power.