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I've run a few streams of diagnostic muons and all gamma with the CR track finder turned on. It appears that the all of the Acd2CR variables are being filled. I look at a few variables in a bit more detail. Specifically I show comparisons between the distance to active tiles and the energy deposited in active tiles between the cosmic-ray tracks , and the tree-based tracks, and the MC truth. All plots are made requiring at least one cosmic-ray track.tracking. To compare on equal footing, I apply the cut:

 "TkrNumTracks > 0 && TkrCRNumTracks > 0" 

The distributions look very similar for both photons and muons.

Diagnostic Muons

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CR-Only Tracks

To get a very precursory look at what we can gain from the CR tracking, I look at events in the muon sample where the CR tracker finds a track but the tree-based tracking does not:

 TkrNumTracks==0 && TkrCRNumTracks > 0