1. Check at XCS YAG3M → it’s likely that there are double beam on YAG3M too
  2. Check XPP diamond splitter
    1. We should check this PV "XPP:MON:MMS:09.RBV" (LODCM -> Xtl1 Hn) if we see our beam looks strange at CXI.
    2. -10 is OUT position and what we want at CXI.
    3. 0 is in and we don't want.