Corey, Dan

Today we went through Keita's HAM6 Punchlist to get to a point where we could hand off HAM6 to SEI (for balancing/testing) & get HAM6 closed until final HAM6 alignment.  Overall, we got through most of the items, but we did have an issue with a Tip Tilt Assy.

BOSEM check of Tip Tilt #2 & #3

Wed/Thurs, OM#2 & OM#3 were removed to cure grounding issues they had (noted in Keita's alogs:  here & here).  One of the first things we checked was BOSEM positioning, and each Tip Tilt (OM) had one BOSEM which was NOT Centered.  BOSEM values should be around |16,000counts|. 

• #2's UL was at 9k
• #3's UR was at 32k

Tried fixing #2's UL, but with moving the BOSEM to extremes in/out, later found that the entire optic looked translated (i.e. the "Flags" were all off to the side inside their BOSEMs). They were off so much they were touching the interior of the BOSEM.  This is why we couldn't change the UL.  See attached photo.  We will need to pull this Tip Tilt out and investigate how it's hanging.  It must have become messed up during handling to cure grounding.

For OM3, UR was fixed and easily taken to ~16k.

Photodiodes & WFS

After reading Keita's alog and reconnecting cables at the rack & then also seeing that a few chasis boxes were powered OFF, we were able to zip through all of these detectors (by flashing a flashlight on them.

• AS_C DC QPD (solo qpd):  GOOD!
• Sled A:  GOOD!
• Sled B:  GOOD!
• OMC A:  GOOD!
• OMCB:  GOOD!
• OMC DCPD:  GOOD!
• WFSA:  GOOD!
• WFSB:  GOOD!

Picomotors

The driver for these guys is not in the rack.  So, I had to pull out the Driver, a Tester/power supply, and function generator to test the Picomotors.  Once the set up was made we went through each picomotor and confirmed Pitch & Yaw motion.  For the record, on the Tester 1 = X & 2 = Y.  And when we tested picomotors we discovered 1 = X = Yaw & 2 = Y = Pitch.  This was consistent for all Picomotors.

Beam Diverters

The Beam Diverters are connected in Beckhoff Land, so we were able to test these guys easily via their medm screen.  I took pictures (attached) of these guys in the "closed" & "open" states.

ISI Unlocked

Before sealing the chamber up, I unlocked the ISI.  On Monday, we can work on OM#2, or we can hand off to SEI (I reckon this decision is schedule-dependent).  Oh, and we also had the Japanese film crew capture some video of some of our work.