Jason, RyanC, Mitch, Randy, Jim

This morning Randy, Mitch and I put initial payload on the HAM1 ISI, 210kg of tabletop mass, stacks of 2 D091075 10kg masses. 3 of these stacks are suspended on viton for damping, these are spread across the table as much as I could, but the drawing I'm working from basically has them all in a row down the middle. This got the payload close enough that we could start thinking about initial alignment. 

After lunch, we went out and squeezed 4 more dial indicators on the north side of the chamber. This was pretty difficult getting 2 under the chamber and then attaching 2 more with magnetic bases to the HAM2 crossbeams. With that, we were able to start putting weight on the HEPI springs. We went to each corner, backed all of the stops off till they were barely touching the foot, except for the 3 stops holding the corner up. We then evenly loaded the springs on one pier until the bottom stops were free, while watching dial indicators to make sure nothing moved too much.

Once all 4 corners were floating on springs, we called Jason and Ryan out to set up and take position shots with the total station. All of us very much missed the Faro for the next 90 minutes. When they were set up and got a measurement, I went around and tweaked the springs until the ISI was within more or less +/- 1mm. Table is level to about 1/4 mm across the 4 points we measured. Table yaw I think was out about 250 urad, but hopefully Jason can put some numbers up later.

Tomorrow, the plan is to lock HEPI again, verify we haven't disturbed the position and start reattaching actuators. When that is done, ISC can start their reinstall.