-- Beams damped on IMC REFL table --

I put two beam damps on IMC REFL table to damp undesirable beams, as shown in the attached figure. One is for the reflection on the ND filter I put in front of the RF PD yesterday. The other is standing where the DC PD for IMC REFL had been put (most power of the light goes into this beam damp). 

I could not find other ghost beams than the above two with a sensor card.