1. Coarse timing can be done with fast photodiode connected to Lecroy oscilloscope → match the rising edges of the X-ray and the laser by adjusting lxt (Vitari timing)
  2. Fine timing → fast photodiode outside of SC3 → Acquiris digitizer
    1. Use an out-coupling mirror (currently mounted on SC3 Ap Stand, or the “CXI:SC3:MMS:10” motor) to get the UV outside of SC3
    2. Measure the UV transmission through a clear YAG at IP on the photodiode
  3. Make the Takahiro plot for finding the timing
    1. Set the two cursor positions for the integration area of Acquiris
    2. Untimed: no correlation between the transmission and X-ray pulse energy
    3. Timed: negative correlation between the transmission and X-ray pulse energy