TPhRMSSelVertexMod TPhVertexFinderMod TPhFindSpecVertexMod TPhSpecVertexFinderMod TPhOctProbabilityVertexMod TPhFindOctVertexMod TPhCerenkovVertexMod TPhT0VertexMod TPhFindTrgVertexMod
Selects best vertex coordinates using available results from different vertexing procedures according to their previously evaluated precision and limits of applicability, see vtxselection_module.html.
Created two
histograms:
- probability histogram from single clusters
- vertex position histograms from extrapolation of pairs of hits to fixed Y vertex
Accepted vertex has to be near the peak in probability distribution and correspond to the
highest spike in the position histogram, with at least 3 particles. Y position is found by
scanning several Y values and choosing that with most distinct spike.
More details in the TPhVertexFinderMod.cxx file
Created histograms of the crossing points of all pairs of tracks and fits the position of the maximum.
The sum of distances of the reconstructed tracks from a common vertex is minimized using TMinuit.
Created probability histogram from clusters of pads in octagon looks for a reasonable maximum takes care of increased background in octagon at Z>0 (from the magnet).
Creates histogram of the positions of the hits from octagon and finds the maximum, which can not be outside of the octagon by definition.
Converts time difference to vertex position in cm one value of the offset is used.
Only template exists now.
Converts time difference into position of the vertex in cm.