In the beginning of the Run2020 Cosmic datataking there was a concern about the trigger rates. Later on TOF voltage was found to be at a different value and corrected, since then rates seem OK. I was asked to check the rate comparison between Run2019 and Run2020.

Below is the that comparison plot.

• Cosmic runs in both case were reconstructed and track matching ran over to identify two prongs of a single cosmic track;
• So number of tracks here are the number of actual cosmic particles in TPC;
• Tracks are considered if chi2 for matching is < 1000; (pretty good match);
• Sample are normalized by the number of tracks.

After this I removed the tracks triggered by those new triggers that were not present in Run-19 Cosmics and renormalized the plot, see below: