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Using new ACD merit variables in background rejection
Current background rejection
Prefilters:
Cut | Purpose | Gamma Effic | Bkg Effic |
---|---|---|---|
BasicTileCut | Reject events with track pointing at struck tile: | 95.1% | 8.1% |
RibbonCut | Reject events with track pointing at struck ribbon | 94.9% | 7.7% |
TotalTileEnergyCut | Reject events with excess ACD total energy | 89.3% | 1.2% |
CornerCut | Reject event in the corner gap of the ACD | 88.3% | 1.1% |
TileEdgeCut: | Reject events at tile edges with decreased signal | 88.1% | 1.1% |
ClassificationTree:
Variable | Importance |
AcdTotalTileEventEnergyRatio | 2034.17 |
Tkr1SSDVeto | 1201.47 |
CTBCORE | 812.28 |
AcdTkr1ActDistNorm | 575.06 |
AcdTkr1ActiveDistENorm | 476.57 |
AcdTotalEnergyNorm | 269.89 |
Tkr1ACDSideZ | 256.61 |
AcdActDistNorm | 118.93 |
Tkr1LATEdge | 107.11 |
AcdTileEnergyNorm | 106.51 |
AcdCornerDocaENorm | 81.52 |
AcdMaxTileEnergy | 74.32 |
AcdTileEventEnergyRatio | 73.48 |
AcdTkr1TileEnergyNorm | 25.67 |
AcdTileCount | 24 |