The is MR updates the V0 trigger. Newly included are cuts on the track level: minimum and maximum of the z coordinate at the first measurement (to select tracks starting in STS, but exclude STS0), minimum of the z coordinate of the last measurement (to select tracks ending in TOF), and cuts in the impact parameter in the target plane to exclude primary tracks.
The order of the cuts on par vertex-z and pair distance was reverted.
The implementation follows the study presented in the CBM beamtime meeting of 12 May 2024.
Tested on 3012_node9_06_0017.tsa. The output file size is 34 MB, a reduction of a factor of 340 compared to the original tsa file, and about 1,000 compared to the rra file using the TOF digi multiplicity trigger.
A corresponding update of EventbuildConfig.yaml will be committed to the parameter respository.