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PWGLF: adapt V0 TOF PID to be used also for coll-unassoc V0s #6396

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Merged
njacazio merged 7 commits into from
Jun 8, 2024
Merged

PWGLF: adapt V0 TOF PID to be used also for coll-unassoc V0s #6396

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7a93d8e
PWGLF: adapt V0 TOF PID to be used also for coll-unassoc V0s
ddobrigk Jun 6, 2024
99b4780
Please consider the following formatting changes (#305)
alibuild Jun 6, 2024
39095e1
Add correct cast
ddobrigk Jun 6, 2024
9b1c37e
Fix compilation-stopping typo
ddobrigk Jun 6, 2024
1c00b32
findableStudy: straCollision check
gianniliveraro Jun 7, 2024
7983485
Please consider the following formatting changes (#307)
alibuild Jun 8, 2024
7a191a4
Megalinter fix
ddobrigk Jun 8, 2024
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108 changes: 66 additions & 42 deletions PWGLF/TableProducer/Strangeness/lambdakzeropid.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,7 @@
#include "DataFormatsParameters/GRPObject.h"
#include "DataFormatsParameters/GRPMagField.h"
#include "CCDB/BasicCCDBManager.h"
#include "DataFormatsCalibration/MeanVertexObject.h"
#include "CommonConstants/PhysicsConstants.h"
#include "Common/TableProducer/PID/pidTOFBase.h"
#include "Common/DataModel/PIDResponse.h"
Expand All @@ -75,6 +76,9 @@ struct lambdakzeropid {

Service<o2::ccdb::BasicCCDBManager> ccdb;

// mean vertex position to be used if no collision associated
o2::dataformats::MeanVertexObject* mVtx = nullptr;

// For manual sliceBy
Preslice<V0OriginalDatas> perCollisionOriginal = o2::aod::v0data::collisionId;
;
Expand All @@ -100,6 +104,11 @@ struct lambdakzeropid {
Configurable<std::string> lutPath{"lutPath", "GLO/Param/MatLUT", "Path of the Lut parametrization"};
Configurable<std::string> geoPath{"geoPath", "GLO/Config/GeometryAligned", "Path of the geometry file"};
Configurable<std::string> nSigmaPath{"nSigmaPath", "Users/d/ddobrigk/stratof", "Path of information for n-sigma calculation"};
Configurable<std::string> mVtxPath{"mVtxPath", "GLO/Calib/MeanVertex", "Path of the mean vertex file"};

// manual
Configurable<int> manualRunNumber{"manualRunNumber", 544122, "manual run number if no collisions saved"};
Configurable<uint64_t> manualTimeStamp{"manualTimeStamp", 1696549226920, "manual time stamp if no collisions saved"};

ConfigurableAxis axisEta{"axisEta", {20, -1.0f, +1.0f}, "#eta"};
ConfigurableAxis axisDeltaTime{"axisDeltaTime", {2000, -1000.0f, +1000.0f}, "delta-time (ps)"};
Expand Down Expand Up @@ -318,10 +327,9 @@ struct lambdakzeropid {
}
}

template <typename TInformationClass>
void initCCDB(TInformationClass const& infoObject)
void initCCDB(int runNumber, uint64_t timeStamp)
{
if (mRunNumber == infoObject.runNumber()) {
if (mRunNumber == runNumber) {
return;
}

Expand All @@ -333,11 +341,12 @@ struct lambdakzeropid {
grpmag.setL3Current(30000.f / (d_bz / 5.0f));
}
o2::base::Propagator::initFieldFromGRP(&grpmag);
mRunNumber = infoObject.runNumber();
mVtx = ccdb->getForTimeStamp<o2::dataformats::MeanVertexObject>(mVtxPath, timeStamp);
mRunNumber = runNumber;
return;
}

auto run3grp_timestamp = infoObject.timestamp();
auto run3grp_timestamp = timeStamp;
o2::parameters::GRPObject* grpo = ccdb->getForTimeStamp<o2::parameters::GRPObject>(grpPath, run3grp_timestamp);
o2::parameters::GRPMagField* grpmag = 0x0;
if (grpo) {
Expand All @@ -353,12 +362,13 @@ struct lambdakzeropid {
o2::base::Propagator::initFieldFromGRP(grpmag);
// Fetch magnetic field from ccdb for current collision
d_bz = std::lround(5.f * grpmag->getL3Current() / 30000.f);
mVtx = ccdb->getForTimeStamp<o2::dataformats::MeanVertexObject>(mVtxPath, timeStamp);
LOG(info) << "Retrieved GRP for timestamp " << run3grp_timestamp << " with magnetic field of " << d_bz << " kZG";
}

// if TOF Nsigma desired
if (doNSigmas) {
nSigmaCalibObjects = ccdb->getForTimeStamp<TList>(nSigmaPath, infoObject.timestamp());
nSigmaCalibObjects = ccdb->getForTimeStamp<TList>(nSigmaPath, timeStamp);
if (nSigmaCalibObjects) {
LOGF(info, "loaded TList with this many objects: %i", nSigmaCalibObjects->GetEntries());

Expand Down Expand Up @@ -393,7 +403,7 @@ struct lambdakzeropid {
}
}
}
mRunNumber = infoObject.runNumber();
mRunNumber = runNumber;
}

float velocity(float lMomentum, float lMass)
Expand All @@ -409,7 +419,7 @@ struct lambdakzeropid {
void processV0Candidate(TCollision const& collision, TV0 const& v0, TTrack const& pTra, TTrack const& nTra)
{
// time of V0 segment
float lengthV0 = std::hypot(v0.x() - collision.posX(), v0.y() - collision.posY(), v0.z() - collision.posZ());
float lengthV0 = std::hypot(v0.x() - collision.getX(), v0.y() - collision.getY(), v0.z() - collision.getZ());
float velocityK0Short = velocity(v0.p(), o2::constants::physics::MassKaonNeutral);
float velocityLambda = velocity(v0.p(), o2::constants::physics::MassLambda);
float timeK0Short = lengthV0 / velocityK0Short; // in picoseconds
Expand Down Expand Up @@ -460,14 +470,14 @@ struct lambdakzeropid {
// calculate and pack properties for QA purposes
int posProperties = 0;
if (lengthPositive > 0)
posProperties = posProperties | (int(1) << kLength);
posProperties = posProperties | (static_cast<int>(1) << kLength);
if (pTra.hasTOF())
posProperties = posProperties | (int(1) << kHasTOF);
posProperties = posProperties | (static_cast<int>(1) << kHasTOF);
int negProperties = 0;
if (lengthNegative > 0)
negProperties = negProperties | (int(1) << kLength);
negProperties = negProperties | (static_cast<int>(1) << kLength);
if (nTra.hasTOF())
negProperties = negProperties | (int(1) << kHasTOF);
negProperties = negProperties | (static_cast<int>(1) << kHasTOF);

histos.fill(HIST("h2dPositiveTOFProperties"), v0.pt(), posProperties);
histos.fill(HIST("h2dNegativeTOFProperties"), v0.pt(), negProperties);
Expand Down Expand Up @@ -582,43 +592,57 @@ struct lambdakzeropid {

void processStandardData(aod::Collisions const& collisions, V0OriginalDatas const& V0s, TracksWithAllExtras const&, aod::BCsWithTimestamps const& /*bcs*/)
{
auto collision = collisions.begin();
auto bc = collision.bc_as<aod::BCsWithTimestamps>();
// Fire up CCDB - based on standard collisions
initCCDB(bc);
for (const auto& collision : collisions) {
// Do analysis with collision-grouped V0s, retain full collision information
const uint64_t collIdx = collision.globalIndex();
auto V0Table_thisCollision = V0s.sliceBy(perCollisionOriginal, collIdx);
histos.fill(HIST("hCandidateCounter"), V0Table_thisCollision.size());
// V0 table sliced
for (auto const& v0 : V0Table_thisCollision) {
// de-reference interlinks by hand for derived data
auto pTra = v0.posTrack_as<TracksWithAllExtras>();
auto nTra = v0.negTrack_as<TracksWithAllExtras>();

processV0Candidate(collision, v0, pTra, nTra);
// Fire up CCDB with first collision in record. If no collisions, bypass
if (collisions.size() > 0) {
auto collision = collisions.begin();
auto bc = collision.bc_as<aod::BCsWithTimestamps>();
initCCDB(bc.runNumber(), bc.timestamp());
} else {
initCCDB(manualRunNumber, manualTimeStamp);
}

for (const auto& V0 : V0s) {
// for storing whatever is the relevant quantity for the PV
o2::dataformats::VertexBase primaryVertex;
if (V0.has_collision()) {
auto const& collision = V0.collision();
primaryVertex.setPos({collision.posX(), collision.posY(), collision.posZ()});
primaryVertex.setCov(collision.covXX(), collision.covXY(), collision.covYY(), collision.covXZ(), collision.covYZ(), collision.covZZ());
} else {
primaryVertex.setPos({mVtx->getX(), mVtx->getY(), mVtx->getZ()});
}

auto pTra = V0.posTrack_as<TracksWithAllExtras>();
auto nTra = V0.negTrack_as<TracksWithAllExtras>();
processV0Candidate(primaryVertex, V0, pTra, nTra);
}
}

void processDerivedData(soa::Join<aod::StraCollisions, aod::StraStamps> const& collisions, V0DerivedDatas const& V0s, dauTracks const&)
{
for (const auto& collision : collisions) {
// Fire up CCDB - based on StraCollisions for derived analysis
initCCDB(collision);
// Do analysis with collision-grouped V0s, retain full collision information
const uint64_t collIdx = collision.globalIndex();
auto V0Table_thisCollision = V0s.sliceBy(perCollisionDerived, collIdx);
histos.fill(HIST("hCandidateCounter"), V0Table_thisCollision.size());
// V0 table sliced
for (auto const& v0 : V0Table_thisCollision) {
// de-reference interlinks by hand for derived data
auto pTra = v0.posTrackExtra_as<dauTracks>();
auto nTra = v0.negTrackExtra_as<dauTracks>();

processV0Candidate(collision, v0, pTra, nTra);
// Fire up CCDB with first collision in record. If no collisions, bypass
if (collisions.size() > 0) {
auto collision = collisions.begin();
initCCDB(collision.runNumber(), collision.timestamp());
} else {
initCCDB(manualRunNumber, manualTimeStamp);
}

for (const auto& V0 : V0s) {
// for storing whatever is the relevant quantity for the PV
o2::dataformats::VertexBase primaryVertex;
if (V0.has_straCollision()) {
auto const& collision = V0.straCollision_as<soa::Join<aod::StraCollisions, aod::StraStamps>>();
primaryVertex.setPos({collision.posX(), collision.posY(), collision.posZ()});
// cov: won't be used anyways, all fine
primaryVertex.setCov(1e-6, 1e-6, 1e-6, 1e-6, 1e-6, 1e-6);
} else {
primaryVertex.setPos({mVtx->getX(), mVtx->getY(), mVtx->getZ()});
}

auto pTra = V0.posTrackExtra_as<dauTracks>();
auto nTra = V0.negTrackExtra_as<dauTracks>();
processV0Candidate(primaryVertex, V0, pTra, nTra);
}
}

Expand Down
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