(Betsy, Gerardo)

Both sets of prisms have been glued onto the BS.

Prism SN 41 was used for the ARM side, and Prism SN 40 was used for 180ARM side.

ARM side results:

Measurement from S1 to the fiducial side of the prism, 20.08 mm + 9.99 mm (prism Wp/2)  = 30.07 mm

The measured distance from the centerline of the primary prism to the S1 surface is 30.07 mm, the target is 30.04 mm, so this gives us a +0.03 mm, away from S1 surface, but well within the +-0.1 mm.

180ARM side results:

Measurement from S1 to the fiducial side of the prism, 40.07 mm - 10.01 mm (prism Wp/2)  = 30.06 mm

The measured distance from the centerline of the primary prism to the S1 surface is 30.06 mm, the target once again is 30.04 mm, so this gives us a +0.02 mm, away from S1 surface, but well within the +-0.1 mm.