NikoL, DarkhanT, EvanG, RickS

This afternoon, we made in-chamber measurements using a Pcal integrating sphere-based power sensor (photos attached).

We made a complete set of measurements that should allow us to quantify the optical losses on the incident and reflected paths for both beams.

Darkhan plans to process the data using the scripts he developed for similar measurements made on Jan. 10, 2018 at Y-end and post the results soon.