IMC/HAM2/HAM3/PSL:

• beam from PSL aligned to the three IMC optic irises (MC1, MC2, MC3)
• IMC trans iris adjusted
• IM1 OSEMS centered
• beam polarization adjusted with a HWP in the PSL
• IMC flashed, 0-0 mode with some 1-0 modes in pitch
• flashing accomplished in about 20 minutes with Amber driving MC3 and MC1

- Amber, Cheryl, Keita

Unusual angles on HAM2 and HAM3 ISIs (alog 38876) tracked down to electronics that were turned off.  Once the electronics were restored, ISI position sensors returned to 15urad change on HAM2 and 3urad change on HAM3, which does not significantly effect the IO system alignment.

- Jim, Hugh, Richard, Fil

Both HAM2 and HAM3 ISI tables are tilted to the NE, approximately 250-300urad. Hugh brought this to my attention, and my assessment was that this is of no consequence, as long as this tilt also exists when the chambers are under vacuum, and according to Hugh, signals from the ISIs point to this tilt having existed under vacuum, and for a while.  Keita and I also discussed later on, and this tilt is not an issue for IO, assuming only small changes when we pump down the chambers.

- Cheryl, Hugh, Keita

Tomorrow:

• align IM1/IM2 to the Faraday
• install platform and inspect and torque bolts on IM3
• align IM3 and IM4 to the PRM
• verify FI ghost beams