Validation tools for the PPS simulations
Full simulation: follows CMS default vertex smearing by using the generatorSmeared source for LHCTransport and default CMS beamspot position. Disable the hit position from pipeline in produceHitsRelativeToBeam since DS uses pipeline as reference (CMS uses the beam position).
Direct simulation: employs TOTEM vertex smearing in beamDivergenceVtxGenerator, which sources the Unsmeared collection in CMS. Additional vertex displacement is applied.
All samples using CMSSW_12_3_0_pre1 as validation started at Dec/21. Will be moved to newer releases as soon as a good understading between DS and FS is reached.
Variations are produced following the description below for simulation scenarios:
1 - vtx0: forcing the beamspot position to (0,0,0) by using internal LHCInfo collection
2 - noLHCInfo: use beamspot position from DB
3 - vtx0_ApertureCutsOn: vtx0 scenario plus using ApertureCuts
4 - vtx0_BeamFalse_Smeared: vtx0 scenario plus hits at pipeline reference as produceHitsRelativeToBeam==False
5 - vtx0_BeamFalse_Unsmeared: forcing the beamspot position to (0,0,0) by using internal LHCInfo collection and hits at pipeline reference as produceHitsRelativeToBeam==False plus using beamDivergenceVtxGenerator for TOTEM vertex smearing
6 - vtx0_BeamFalse_Unsmeared_xi1: vtx0_BeamFalse_Unsmeared scenario with protons with xi < 0.5
7 - vtx_shift: forcing the beamspot position to CMS position by using internal LHCInfo collection
8 - vtx0_ib: vtx0 scenario but with CMSSW_12_3_X_2022-01-19-1100