alexan.staley@LIGO.ORG - posted 18:21, Wednesday 13 August 2014 (13386)
SR2 Alignment into HAM6
(Alexa, Koji, Dan)
We wanted to fine tune our SR2 alignemnt of the beam through the FI into HAM6.
We first started with the analog camera facing into HAM5. We used the cage around SRM and centered the beam first in YAW and then in PITCH.
Using SRM cage:
RIGHT: P1900 Y -110
LEFT: P1900 Y3150
TOP: P 780 Y 1520
BOTTOM: P3190 Y1520
Center config: P 1985, Y 1520
We then fine tuned this even further by examining the beam in HAM6 and seeing when the beam disappeared. We again first centered YAW and then PITCH.
Using HAM6 light
RIGHT: P1985 Y2048
LEFT: P1985 Y1252
TOP: P2437 Y1650
BOTTOM: 1672, Y1650
Center config: P 2054, Y 1650
We repeated our YAW centering with the improved PITCH centering and found it was still valid.
RIGHT: P2054 Y2047
LEFT: P2054 Y1250
FINAL CONFIG of SR2: P 2054, Y 1650
Finally we adjusted the pico to center the beam on QPD ASC_AS_C. We can now use this as an alignment reference.
Images attached to this report
