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Minimum delta BC configurable for TPC selection #7836

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Oct 1, 2024
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Minimum delta BC configurable for TPC selection #7836

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7 changes: 7 additions & 0 deletions DPG/Tasks/AOTEvent/matchingQa.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,7 @@ struct MatchingQaTask {
Configurable<bool> useITSROFconstraint{"useITSROFconstraint", 1, "use ITS ROF constraints for ITS-TPC vertices"};
Configurable<int> additionalDeltaBC{"additionalDeltaBC", 0, "Additional BC margin added to deltaBC for ITS-TPC vertices"};
Configurable<int> deltaBCforTOFcollisions{"deltaBCforTOFcollisions", 1, "bc margin for TOF-matched collisions"};
Configurable<int> minimumDeltaBC{"minimumDeltaBC", -1, "minimum delta BC for ITS-TPC vertices"};

std::bitset<o2::constants::lhc::LHCMaxBunches> bcPatternB; // bc pattern of colliding bunches
int lastRun = -1;
Expand Down Expand Up @@ -102,6 +103,7 @@ struct MatchingQaTask {

histos.add("hBCsITS", "", kTH1F, {axisBcs});
histos.add("hNcontribCandidates", "", kTH1F, {axisNcontrib});
histos.add("hNcontribCounts", "", kTH1F, {axisNcontrib});
histos.add("hNcontribSigma", "", kTH2F, {axisNcontrib, axisColTimeRes});

histos.add("hNcontribAll", "", kTH1F, {axisNcontrib});
Expand Down Expand Up @@ -407,6 +409,10 @@ struct MatchingQaTask {

deltaBC += additionalDeltaBC;

if (minimumDeltaBC >= 0) {
deltaBC = deltaBC < minimumDeltaBC ? minimumDeltaBC : deltaBC;
}

int64_t minBC = tpcGlobalBC - deltaBC;
int64_t maxBC = tpcGlobalBC + deltaBC;

Expand Down Expand Up @@ -453,6 +459,7 @@ struct MatchingQaTask {
LOGP(info, "{} {}", minBC, maxBC);

histos.fill(HIST("hNcontribCandidates"), nContrib, nCandidates);
histos.fill(HIST("hNcontribCounts"), nContrib);

if (globalBcBest != 0)
vFoundBCindex[colId] = mapGlobalBcWithTVX[globalBcBest];
Expand Down
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