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GQLink - Plots and Preliminary Results

GQLink vs. Geant4 comparison plots - with crossing planes

General settings

  • stepMax: 20 mm
  • deltaIntersection: 1e-5 mm
  • deltaChord: 0.25 mm (not relevant for GQLink)
  • deltaOneStep: 0.01 mm (overriden by epsilon)
  • trackMaxLen: 1 km

epsilon = 1e-6

epsilon = 1e-7

epsilon = 1e-8

Comparison with QSS Solver

Geant4 - General settings

  • stepMax: 20 mm
  • deltaIntersection: 1e-5 mm
  • deltaChord: 0.25 mm (not relevant for GQLink)
  • deltaOneStep: 0.01 mm (overriden by epsilon)
  • trackMaxLen: 100 m

Using QSS polynomials

  • Important: this plots belong to the very first working implementation of QSS polynomials to find boundary crossings within Geant4. As such, it is still in need of improvements.

Geant4 - General settings

  • stepMax: 20 mm
  • deltaIntersection: 1e-5 mm
  • deltaChord: 0.25 mm (not relevant for GQLink)
  • deltaOneStep: 0.01 mm (overriden by epsilon)
  • trackMaxLen: 100 m

epsilon = 1e-5

epsilon = 1e-6

epsilon = 1e-7

GQLink_Poly callgraphs

Using QSS polynomials - with improvements

Geant4 - General settings

  • stepMax: 20 mm
  • deltaIntersection: 1e-5 mm (not relevant for GQLink + QSS polynomials)
  • deltaChord: 0.25 mm (not relevant for GQLink)
  • deltaOneStep: 0.01 mm (overriden by epsilon)
  • trackMaxLen: 100 m

epsilon = 1e-5

epsilon = 1e-6

epsilon = 1e-7

Using bisection

Geant4 - General settings

  • stepMax: 20 mm
  • deltaIntersection: 1e-5 mm (not relevant for GQLink + QSS polynomials)
  • deltaChord: 0.25 mm (not relevant for GQLink)
  • deltaOneStep: 0.01 mm (overriden by epsilon)
  • trackMaxLen: 100 m

epsilon = 1e-5

Intersection point accuracy