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Include QED for special runs #14242

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Merged
sawenzel merged 4 commits into from
May 16, 2025
Merged

Include QED for special runs #14242

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81f3222
Include QED for special runs
jackal1-66 May 6, 2025
e6aed27
Please consider the following formatting changes
alibuild May 6, 2025
7f93125
Merge pull request #15 from alibuild/alibot-cleanup-14242
jackal1-66 May 6, 2025
a5d853d
Update QEDGenParam.h
sawenzel May 16, 2025
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11 changes: 6 additions & 5 deletions Generators/include/Generators/QEDGenParam.h
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Expand Up @@ -24,11 +24,12 @@ namespace o2
namespace eventgen
{
struct QEDGenParam : public o2::conf::ConfigurableParamHelper<QEDGenParam> {

float yMin = -6.f; ///< min Y
float yMax = 6.f; ///< max Y
float ptMin = 0.4e-3; ///< min pT
float ptMax = 10.f; ///< min pT
float yMin = -6.f; ///< min Y
float yMax = 6.f; ///< max Y
float ptMin = 0.4e-3; ///< min pT
float ptMax = 10.f; ///< min pT
float cmEnergy = 5360.f; ///< center of mass energy per nucleon pair in GeV
float Z = 82.f; ///< atomic number of the projectile/target (only symmetric systems are compatible for now)
//
float xSectionQED = -1; ///< estimated QED x-section in barns
float xSectionHad = 8.; ///< reference hadronic x-section for the same system
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2 changes: 2 additions & 0 deletions Generators/share/external/QEDepem.C
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Expand Up @@ -35,6 +35,8 @@ o2::eventgen::GeneratorTGenerator* QEDepem()
genBg->SetPtRange(qedParam.ptMin, qedParam.ptMax); // Set pt limits (GeV) for e+-: 1MeV corresponds to max R=13.3mm at 5kGaus
genBg->SetOrigin(diamond.position[0], diamond.position[1], diamond.position[2]); // vertex position in space
genBg->SetSigma(diamond.width[0], diamond.width[1], diamond.width[2]); // vertex sigma
genBg->SetCMEnergy(qedParam.cmEnergy); // center of mass energy per nucleon pair in GeV
genBg->SetZ(qedParam.Z); // atomic number of the projectile/target (only symmetric systems are compatible for now)
genBg->SetTimeOrigin(0.); // vertex position in time
initialized = genBg->Init();
if (!initialized) {
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