LIGO Document E1300477-v7
- Step-by-step procedure for installing the Pcal periscope assembly inside the A7 adapter at the end stations.
- Positioning and Alignment specifications (Table 1) revised to reference "IFO Laser Beam axis", previously referencing "BT Centerline".
Vertical and Horizontal displacement tolerances changed-
FROM: +/-2 mm
TO: +/-1.4 mm
Angular Orientation tolerance resolved to Azimuth and Elevation-
FROM: +/-0.2 mrad (absolute)
TO: Azimuth +/-0.14 mrad, Elevation +/-0.14 mrad
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