I improvised a windshield for SRM basically by wrapping the whole set up with aluminium foil, leaving no openings.

Figure 1 and 2 shows preliminary results of the residual motion before and after installing the windshield.

The spectra were measured with all controls on. The results show that the SRM reaches the type B lock-aquisition requirement. 

Since I have accidentally touched the folding mirror, the diagonalization might be changed by a bit. And, because we now have a much sensitive OL, I intended to do another round of diagonalization, which is still on-going. Results will be updated later.