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dN/dx for TPC and DCH

zhaog@ihep.ac.cn requested to merge zhaog/CEPCSW:dndx into master

Implementation of dN/dx for TPC and DCH

Current implementation is a track-level sampling of dN/dx from Garfield++ simulation. Two "Algorithms" and one "Service" are created. The "Algorithms" call the SimplePIDSvc to sampling the dN/dx from 2D histograms of dN/dx mean and dN/dx sigma.

The "Algorithms", named TPCDndxAlg and DCHDndxAlg, are located in: Reconstruction/ParticleID

The "Service" is located in: Service/SimplePIDSvc

Preliminary checks:

  • Particle: Pions
  • Momentum: 5 GeV/c
  • Polar angle: 60 deg
  1. dN/dx distribution

pion_dndx_tpc

  1. Chi dN/dx distribution

pion_chi_dndx_tpc

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