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Commit 0221a91d authored by John Derek Chapman's avatar John Derek Chapman
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Adding a comment to `LArG4BirksLaw.cc` to preserve our current knowledge.

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LArCalorimeter/LArG4/LArG4Code/src/LArG4BirksLaw.cc
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...@@ -18,6 +18,7 @@ double LArG4BirksLaw::operator () (double dE, double dX, double EField) const { ...@@ -18,6 +18,7 @@ double LArG4BirksLaw::operator () (double dE, double dX, double EField) const {
double dEdX = dE/dX; double dEdX = dE/dX;
const double kOverField = m_BirksLawK/EField; const double kOverField = m_BirksLawK/EField;
// NB For a MIP in LAr 1.51 == dEdX/m_LArDensity, so dEcorr1==dE
double dEcorr1 = dE * (1 + kOverField*1.51) / (1 + kOverField*dEdX/m_LArDensity); // original corrections double dEcorr1 = dE * (1 + kOverField*1.51) / (1 + kOverField*dEdX/m_LArDensity); // original corrections
if (dEdX > 12000.0) dEdX = 12000.0; // The experimental data is available only until dE/dX ~ 12000 MeV/cm if (dEdX > 12000.0) dEdX = 12000.0; // The experimental data is available only until dE/dX ~ 12000 MeV/cm
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