As requested, the flow rates through the laser heads was reduced from ~0.7 lpm to 6 lpm.
The minimum flow rate was dictated by the flow rate on head 4, which was lower than the
others from the outset.  Its flow was set so that the flow rate was ~0.5 lpm.  The flow
rate was reduced by adjusting the bypass valve on the cooling manifold.  The flow rate
out of the chiller is already set to its non-zero minimum value.

    The flow rate in the power meter cooling circuit was also reduced by adjusting the
pressure regulator.





Jason/Peter