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A simple test to figure out what the pixel hit resolution parameter does:

Use Technical proposal benchmark as reference:

Default pixel resolution is written down in this file: tkgeometry/config/stdinclude/ModuleTypes/pixel resolutionLocalX 0.013 resolutionLocalY 0.028

pt 1000 Real 2.30948 Ideal 0.53651 Loss 4.3

Make the following change to Barrel BPX in PixelTechnicalProposal2014.cfg:

  Layer 1,2,3,4 {
    resolutionLocalX 0.001 // 1 um
  }

pt 1000 Real 2.18685 Ideal 0.04127 Loss 53.0

Make the following change to Barrel BPX in PixelTechnicalProposal2014.cfg:

  Layer 1,2,3,4 {
    resolutionLocalY 0.001 // 1 um
  }

pt 1000 Real 2.30948 Ideal 0.53651 Loss 4.3