The lock out/tag out for the HPO power supplies was removed.

Both the internal and external shutters of the HPO had their flags replaced.  The
position of the flags were also adjusted so that the magnetic position sensor was
triggered when the shutter was opened/closed.  TwinCAT uses the position sensor
for animation on the user screen.

Each of the four laser heads was powered up, one at a time and with 5 amp increments
up to the nominal pump power (50 A).  No problems were observed with the fibre bundles.
The diode currents were set back to zero.

As we were closing up, a small pool of water was observed on the base plate.  Fortunately
none of it was spraying anywhere.  The source was traced to the flow sensor in head 3.
It was removed, its PTFE tape redone and re-installed.  No leak was observed for a period
of time afterwards but this should be monitored and kept in mind if the crystal chiller
keeps complaining about low water level or a flow sensor problem.

If the front end laser trips out and you do not know how to bring it back on line,
PLEASE ASK or get someone who knows how to do it.



Jason, Peter