During the week of April 20th, Danny, Gary and Giles joined Travis at the LHO Fiber Weld lab to perform a practice round of fiber welding.  In part this was also to fire up the equipment and check functionality after a move around the site followed by long downtime.

Giles summarized the week well in an email to Norna:

Today we finished off welding/de-stressing and hanging the 2nd test hang. Everything went fine and probably around 1mrad pitch. We had put in some slightly thinner fibres as a test and these are probably d ~350um. We are going to profile a spare (we pulled 5 and used 4).  So in the end, we did a total of 18 welds with 1 cutout. Certainly good training and important in order to keep up to date.  Just looking to the future and spares, I think it will be essential to get some more gold mirrors, spare galvanometers/boards for both sites and an update of the profiler PC which is painfully slow. We also discussed some stress relief for galvanometer wires to reduce problems we had with wires coming loose.

Note - the galvanometer cable strain relief is currently underway by Fil/Travis.