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- Giacomo is doing spatial, Ryan is spectral (roughly speaking)
- both are interferometric, so the background we had in LCLS1 is mostly gone, but still have some background from stray light, for example
- goose may be the effect of the remaining background, but not sure
- Formula that should work for both: (S-B)/(S(goose)-B)
- B is the pedestal from dropped shots, computed with the IIR. NOTE: denominator B is different than the numerator B, because it is the background at the time the goose data was taken.
- Giacomo will ensure that we run in a regime where (S(goose)-B) is not close to zero
- sxrx34917 (being analyzed by Giacomo and Stefan Droste). this data is "zoomed out" in the time dimension, but will be more zoomed-in for LCLS-II.
- S(goose) comes from moving the laser out of the time window, and is done "offline" according to Giacomo every few hours
- algorithm should be same for spatial/spectral
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