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Merged
njacazio merged 2 commits into from
Aug 21, 2025
Merged

[ALICE3] Update fasttracker and mcharm histograms #12675

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2caae8b
Update fasttracker and mcharm histograms
jesgum Aug 21, 2025
bfaa46f
remove unused histograms
jesgum Aug 21, 2025
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30 changes: 29 additions & 1 deletion ALICE3/Core/FastTracker.cxx
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Expand Up @@ -144,6 +144,34 @@
AddLayer("B10", 80., 250, x0OT, xrhoOT, resRPhiOT, resZOT, eff, 1);
}

void FastTracker::AddSiliconALICE3(std::vector<float> pixelResolution)
{
float x0IT = 0.001; // 0.1%
float x0OT = 0.01; // 1.0%
float xrhoIB = 2.3292e-02; // 100 mum Si
float xrhoOT = 2.3292e-01; // 1000 mum Si
float eff = 1.00;

float resRPhiIT = pixelResolution[0];
float resZIT = pixelResolution[1];
float resRPhiOT = pixelResolution[2];
float resZOT = pixelResolution[3];

AddLayer("bpipe0", 0.48, 250, 0.00042, 2.772e-02, 0.0f, 0.0f, 0.0f, 0); // 150 mum Be
AddLayer("B00", 0.5, 250, x0IT, xrhoIB, resRPhiIT, resZIT, eff, 1);
AddLayer("B01", 1.2, 250, x0IT, xrhoIB, resRPhiIT, resZIT, eff, 1);
AddLayer("B02", 2.5, 250, x0IT, xrhoIB, resRPhiIT, resZIT, eff, 1);
AddLayer("bpipe1", 3.7, 250, 0.0014, 9.24e-02, 0.0f, 0.0f, 0.0f, 0); // 500 mum Be
AddLayer("B03", 7., 250, x0OT, xrhoOT, resRPhiOT, resZOT, eff, 1);
AddLayer("B04", 9., 250, x0OT, xrhoOT, resRPhiOT, resZOT, eff, 1);
AddLayer("B05", 12., 250, x0OT, xrhoOT, resRPhiOT, resZOT, eff, 1);
AddLayer("B06", 20., 250, x0OT, xrhoOT, resRPhiOT, resZOT, eff, 1);
AddLayer("B07", 30., 250, x0OT, xrhoOT, resRPhiOT, resZOT, eff, 1);
AddLayer("B08", 45., 250, x0OT, xrhoOT, resRPhiOT, resZOT, eff, 1);
AddLayer("B09", 60., 250, x0OT, xrhoOT, resRPhiOT, resZOT, eff, 1);
AddLayer("B10", 80., 250, x0OT, xrhoOT, resRPhiOT, resZOT, eff, 1);
}

void FastTracker::AddTPC(float phiResMean, float zResMean)
{
LOG(info) << " Adding standard time projection chamber";
Expand Down Expand Up @@ -176,8 +204,8 @@
for (int i = 0; i < kNPassiveBound; i++) {
AddLayer(Form("tpc_boundary%d", i), rBoundary[i], zLength, radLBoundary[i], xrhoBoundary[i], 0); // dummy errors
}
for (Int_t k = 0; k < tpcRows; k++) {

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[root/entity] 

Replace ROOT entities with equivalents from standard C++ or from O2.
Float_t rowRadius = 0;

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[root/entity] 

Replace ROOT entities with equivalents from standard C++ or from O2.
if (k < innerRows)
rowRadius = rowOneRadius + k * tpcInnerRadialPitch;
else if (k >= innerRows && k < (innerRows + middleRows))
Expand All @@ -204,7 +232,7 @@
index = 1;
z0 = -4 * sigmaD + i * dz0;
dist += index * (dz0 / 3.) * (1 / o2::math_utils::sqrt(o2::constants::math::TwoPI) / sigmaD) * std::exp(-z0 * z0 / 2. / sigmaD / sigmaD) * (1 / o2::math_utils::sqrt((z - z0) * (z - z0) + r * r));
if (index != 4)

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
index = 4;
else
index = 2;
Expand Down Expand Up @@ -307,7 +335,7 @@
break;
}
}
if (firstActiveLayer <= 0) {
if (firstActiveLayer < 0) {
LOG(fatal) << "No active layers found in FastTracker, check layer setup";
return -2; // no active layers
}
Expand All @@ -334,7 +362,7 @@
// check if layer is reached
float targetX = 1e+3;
inputTrack.getXatLabR(layers[il].getRadius(), targetX, magneticField);
if (targetX > 999.f) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
LOGF(debug, "Failed to find intercept for layer %d at radius %.2f cm", il, layers[il].getRadius());
break; // failed to find intercept
}
Expand Down Expand Up @@ -411,7 +439,7 @@

float targetX = 1e+3;
inputTrack.getXatLabR(layers[il].getRadius(), targetX, magneticField);
if (targetX > 999)

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
continue; // failed to find intercept

if (!inputTrack.propagateTo(targetX, magneticField)) {
Expand Down Expand Up @@ -483,7 +511,7 @@
// backpropagate to original radius
float finalX = 1e+3;
bool inPropStatus = inwardTrack.getXatLabR(initialRadius, finalX, magneticField);
if (finalX > 999) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
LOG(debug) << "Failed to find intercept for initial radius " << initialRadius << " cm, x = " << finalX << " and status " << inPropStatus << " and sn = " << inwardTrack.getSnp() << " r = " << inwardTrack.getY() * inwardTrack.getY();
return -3; // failed to find intercept
}
Expand All @@ -493,7 +521,7 @@
}

// only attempt to continue if intercepts are at least four
if (nIntercepts < 4)

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[magic-number] 

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return nIntercepts;

// generate efficiency
Expand Down Expand Up @@ -537,7 +565,7 @@
if (fcovm[ii][jj] * fcovm[ii][jj] > std::abs(fcovm[ii][ii] * fcovm[jj][jj])) {
rubenConditional = true;
if (makePositiveDefinite) {
fcovm[ii][jj] = TMath::Sign(1, fcovm[ii][jj]) * covMatFactor * sqrt(std::abs(fcovm[ii][ii] * fcovm[jj][jj]));

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[std-prefix] 

Use std:: prefix for names from the std namespace.
}
}
}
Expand Down Expand Up @@ -575,7 +603,7 @@
for (int j = 0; j < 5; ++j)
val += eigVec[j][ii] * outputTrack.getParam(j);
// smear parameters according to eigenvalues
params_[ii] = gRandom->Gaus(val, sqrt(eigVal[ii]));

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[std-prefix] 

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}

// invert eigenvector matrix
Expand All @@ -588,7 +616,7 @@
outputTrack.setParam(val, ii);
}
// should make a sanity check that par[2] sin(phi) is in [-1, 1]
if (fabs(outputTrack.getParam(2)) > 1.) {

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[std-prefix] 

Use std:: prefix for names from the std namespace.
LOG(info) << " --- smearTrack failed sin(phi) sanity check: " << outputTrack.getParam(2);
return -2;
}
Expand Down
3 changes: 3 additions & 0 deletions ALICE3/Core/FastTracker.h
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Expand Up @@ -42,9 +42,11 @@ class FastTracker
// Layer and layer configuration
void AddLayer(TString name, float r, float z, float x0, float xrho, float resRPhi = 0.0f, float resZ = 0.0f, float eff = 0.0f, int type = 0);
DetLayer GetLayer(const int layer, bool ignoreBarrelLayers = true) const;
std::vector<DetLayer> GetLayers() const { return layers; }
int GetLayerIndex(const std::string& name) const;
size_t GetNLayers() const { return layers.size(); }
bool IsLayerInert(const int layer) const { return layers[layer].isInert(); }
void ClearLayers() { layers.clear(); }
void SetRadiationLength(const std::string layerName, float x0) { layers[GetLayerIndex(layerName)].setRadiationLength(x0); }
void SetRadius(const std::string layerName, float r) { layers[GetLayerIndex(layerName)].setRadius(r); }
void SetResolutionRPhi(const std::string layerName, float resRPhi) { layers[GetLayerIndex(layerName)].setResolutionRPhi(resRPhi); }
Expand All @@ -57,6 +59,7 @@ class FastTracker

void AddSiliconALICE3v4(std::vector<float> pixelResolution);
void AddSiliconALICE3v2(std::vector<float> pixelResolution);
void AddSiliconALICE3(std::vector<float> pixelResolution);
void AddTPC(float phiResMean, float zResMean);

void Print();
Expand Down
17 changes: 16 additions & 1 deletion ALICE3/TableProducer/alice3-multicharmTable.cxx
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Expand Up @@ -161,7 +161,8 @@ struct alice3multicharmTable {
Partition<alice3tracks> tracksPiFromXiC =
((aod::a3DecayMap::decayMap & trackSelectionPiFromXiC) == trackSelectionPiFromXiC) && aod::track::signed1Pt > 0.0f && 1.0f / nabs(aod::track::signed1Pt) > minPiCPt&& nabs(aod::track::dcaXY) > piFromXiC_dcaXYconstant + piFromXiC_dcaXYpTdep* nabs(aod::track::signed1Pt) && nabs(aod::track::dcaZ) > piFromXiC_dcaZconstant + piFromXiC_dcaZpTdep* nabs(aod::track::signed1Pt);

Partition<alice3tracks> tracksPiFromXiCC = ((aod::a3DecayMap::decayMap & trackSelectionPiFromXiCC) == trackSelectionPiFromXiCC) && aod::track::signed1Pt > 0.0f && 1.0f / nabs(aod::track::signed1Pt) > minPiCCPt&& nabs(aod::track::dcaXY) > piFromXiCC_dcaXYconstant + piFromXiCC_dcaXYpTdep* nabs(aod::track::signed1Pt);
Partition<alice3tracks> tracksPiFromXiCC =
((aod::a3DecayMap::decayMap & trackSelectionPiFromXiCC) == trackSelectionPiFromXiCC) && aod::track::signed1Pt > 0.0f && 1.0f / nabs(aod::track::signed1Pt) > minPiCCPt&& nabs(aod::track::dcaXY) > piFromXiCC_dcaXYconstant + piFromXiCC_dcaXYpTdep* nabs(aod::track::signed1Pt) && nabs(aod::track::dcaZ) > piFromXiCC_dcaZconstant + piFromXiCC_dcaZpTdep* nabs(aod::track::signed1Pt);

// Helper struct to pass candidate information
struct {
Expand Down Expand Up @@ -440,6 +441,13 @@ struct alice3multicharmTable {
histos.add("hPi2cPt", "hPi2cPt", kTH1D, {axisPt});
histos.add("hPiccPt", "hPiccPt", kTH1D, {axisPt});

histos.add("hPi1cDCAxy", "hPi1cDCAxy", kTH1D, {axisDCA});
histos.add("hPi1cDCAz", "hPi1cDCAz", kTH1D, {axisDCA});
histos.add("hPi2cDCAxy", "hPi2cDCAxy", kTH1D, {axisDCA});
histos.add("hPi2cDCAz", "hPi2cDCAz", kTH1D, {axisDCA});
histos.add("hPiccDCAxy", "hPiccDCAxy", kTH1D, {axisDCA});
histos.add("hPiccDCAz", "hPiccDCAz", kTH1D, {axisDCA});

histos.add("hMinXiDecayRadius", "hMinXiDecayRadius", kTH1D, {axisRadius2DXi});
histos.add("hMinXiCDecayRadius", "hMinXiCDecayRadius", kTH1D, {axisRadius});
histos.add("hMinXiCCDecayRadius", "hMinXiCCDecayRadius", kTH1D, {axisRadius});
Expand Down Expand Up @@ -774,6 +782,13 @@ struct alice3multicharmTable {
piFromLa.pt(), piFromLa.eta(),
piFromLa.dcaXY(), piFromLa.dcaZ(),
pi1c.eta(), pi2c.eta(), picc.eta());

histos.fill(HIST("hPi1cDCAxy"), std::abs(pi1c.dcaXY() * 1e+4));
histos.fill(HIST("hPi1cDCAz"), std::abs(pi1c.dcaZ() * 1e+4));
histos.fill(HIST("hPi2cDCAxy"), std::abs(pi2c.dcaXY() * 1e+4));
histos.fill(HIST("hPi2cDCAz"), std::abs(pi2c.dcaZ() * 1e+4));
histos.fill(HIST("hPiccDCAxy"), std::abs(picc.dcaXY() * 1e+4));
histos.fill(HIST("hPiccDCAz"), std::abs(picc.dcaZ() * 1e+4));
}
}
histos.fill(HIST("hCombinationsXiCC"), nCombinationsCC);
Expand Down
12 changes: 6 additions & 6 deletions ALICE3/Tasks/alice3-multicharm.cxx
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Expand Up @@ -254,7 +254,7 @@ struct alice3multicharm {
histos.add("hBDTScoreVsXiccMass", "hBDTScoreVsXiccMass", kTH2D, {axisXiccMass, axisBDTScore});
histos.add("hBDTScoreVsXiccPt", "hBDTScoreVsXiccPt", kTH2D, {axisXiccMass, axisPt});
for (const auto& score : bdt.requiredScores.value) {
histPath = std::format("MLQA/RequiredBDTScore_{}/", static_cast<int>(score * 100));
histPath = std::format("MLQA/RequiredBDTScore_{}/", static_cast<int>(score * 10000));
histPointers.insert({histPath + "hDCAXicDaughters", histos.add((histPath + "hDCAXicDaughters").c_str(), "hDCAXicDaughters", {kTH1D, {{axisDcaDaughters}}})});
histPointers.insert({histPath + "hDCAXiccDaughters", histos.add((histPath + "hDCAXiccDaughters").c_str(), "hDCAXiccDaughters", {kTH1D, {{axisDcaDaughters}}})});
histPointers.insert({histPath + "hDCAxyXi", histos.add((histPath + "hDCAxyXi").c_str(), "hDCAxyXi", {kTH1D, {{axisDCA}}})});
Expand Down Expand Up @@ -327,7 +327,7 @@ struct alice3multicharm {

for (const auto& requiredScore : bdt.requiredScores.value) {
if (bdtScore > requiredScore) {
histPath = std::format("MLQA/RequiredBDTScore_{}/", static_cast<int>(requiredScore * 100));
histPath = std::format("MLQA/RequiredBDTScore_{}/", static_cast<int>(requiredScore * 10000));
getHist(TH1, histPath + "hDCAXicDaughters")->Fill(xiccCand.xicDauDCA() * 1e+4);
getHist(TH1, histPath + "hDCAXiccDaughters")->Fill(xiccCand.xiccDauDCA() * 1e+4);
getHist(TH1, histPath + "hDCAxyXi")->Fill(std::fabs(xiccCand.xiDCAxy() * 1e+4));
Expand All @@ -347,13 +347,13 @@ struct alice3multicharm {
getHist(TH1, histPath + "hPi2cDCAz")->Fill(xiccCand.pi2cDCAz() * 1e+4);
getHist(TH1, histPath + "hPiccDCAxy")->Fill(xiccCand.piccDCAxy() * 1e+4);
getHist(TH1, histPath + "hPiccDCAz")->Fill(xiccCand.piccDCAz() * 1e+4);
getHist(TH1, histPath + "hPi1cDCAz")->Fill(xiccCand.pi1cPt());
getHist(TH1, histPath + "hPi2cDCAz")->Fill(xiccCand.pi2cPt());
getHist(TH1, histPath + "hPiccDCAz")->Fill(xiccCand.piccPt());
getHist(TH1, histPath + "hPi1cPt")->Fill(xiccCand.pi1cPt());
getHist(TH1, histPath + "hPi2cPt")->Fill(xiccCand.pi2cPt());
getHist(TH1, histPath + "hPiccPt")->Fill(xiccCand.piccPt());
getHist(TH1, histPath + "hXiccMass")->Fill(xiccCand.xiccMass());
getHist(TH1, histPath + "hXicMass")->Fill(xiccCand.xicMass());
getHist(TH1, histPath + "hXiccPt")->Fill(xiccCand.xiccPt());
getHist(TH1, histPath + "hXicPt")->Fill(xiccCand.xicPt());
getHist(TH1, histPath + "hXiccPt")->Fill(xiccCand.xiccPt());
getHist(TH3, histPath + "h3dXicc")->Fill(xiccCand.xiccPt(), xiccCand.xiccEta(), xiccCand.xiccMass());
}
}
Expand Down
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