I received notification of WE PCal error via the DMS. The power on the Rx sphere is very unstable and goes close to 0. This must be related to the alignment of the WE mirror, which results in the PCal reflected beam going outside the sphere input port.

I have switched off the Pcal beam so the beam does not move around on the Rx bench. We will switch it on later (probably only on Monday, not being available in the next two days).