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TOF: add cuts for cosmics #666

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Merged
Barthelemy merged 1 commit into from
Apr 12, 2021
Merged

TOF: add cuts for cosmics #666

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1 change: 1 addition & 0 deletions Modules/TOF/include/TOF/TaskCosmics.h
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,7 @@ class TaskCosmics final : public TaskInterface
const float mTFDuration = ((nrow - 1) / nrow) * o2::tof::Geo::BC_TIME * o2::tof::Geo::BC_IN_ORBIT * 256 * 1E-9; /// Duration of a TF used to compute the rate of cosmics
float mSelDeltaTSignalRegion = 50000.f; /// Cut on the DeltaT to select signal
float mSelDeltaTBackgroundRegion = 100000.f; /// Cut on the DeltaT to select background
float mSelMinLength = 500.f; /// Cut on the minimum length that a track mush have [cm]

// Histograms
std::shared_ptr<TH1F> mHistoCrate1 = nullptr; /// Crates of the first hit
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39 changes: 27 additions & 12 deletions Modules/TOF/src/TaskCosmics.cxx
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Expand Up @@ -67,6 +67,10 @@ void TaskCosmics::initialize(o2::framework::InitContext& /*ctx*/)
mSelDeltaTBackgroundRegion = atoi(param->second.c_str());
LOG(INFO) << "Set SelDeltaTBackgroundRegion to " << mSelDeltaTBackgroundRegion << " ps";
}
if (auto param = mCustomParameters.find("SelMinLength"); param != mCustomParameters.end()) {
mSelMinLength = atoi(param->second.c_str());
LOG(INFO) << "Set SelMinLength to " << mSelMinLength << " cm";
}

mHistoCrate1.reset(new TH1F("Crate1", "Crate1;Crate of first hit;Counts", 72, 0, 72));
getObjectsManager()->startPublishing(mHistoCrate1.get());
Expand All @@ -80,9 +84,9 @@ void TaskCosmics::initialize(o2::framework::InitContext& /*ctx*/)
getObjectsManager()->startPublishing(mHistoToT1.get());
mHistoToT2.reset(new TH1F("ToT2", "ToT2;ToT (ns);Counts", 100, 0., 48.8));
getObjectsManager()->startPublishing(mHistoToT2.get());
mHistoLength.reset(new TH1F("Length", "Length;Length (cm);Counts", 100, 500.f, 1000.f));
mHistoLength.reset(new TH1F("Length", "Length;Length (cm);Counts", 100, mSelMinLength, 1000.f));
getObjectsManager()->startPublishing(mHistoLength.get());
mHistoDeltaTLength.reset(new TH2F("DeltaTLength", "DeltaT vs Length;Length (cm);#DeltaT (ps);Counts", 100, 500.f, 1000.f, 1000, -1e6, 1e6));
mHistoDeltaTLength.reset(new TH2F("DeltaTLength", "DeltaT vs Length;Length (cm);#DeltaT (ps);Counts", 100, mSelMinLength, 1000.f, 1000, -1e6, 1e6));
getObjectsManager()->startPublishing(mHistoDeltaTLength.get());
mHistoCosmicRate.reset(new TH1F("CosmicRate", "CosmicRate;Crate;Cosmic rate (Hz)", 72, 0., 72));
mCounterPeak.MakeHistogram(mHistoCosmicRate.get());
Expand All @@ -104,21 +108,32 @@ void TaskCosmics::monitorData(o2::framework::ProcessingContext& ctx)
{
mCounterTF.Count(0);
const auto cosmics = ctx.inputs().get<std::vector<o2::tof::CosmicInfo>>("infocosmics");
for (auto i : cosmics) {
const int crate1 = o2::tof::Geo::getCrateFromECH(o2::tof::Geo::getECHFromCH(i.getCH1()));
const int crate2 = o2::tof::Geo::getCrateFromECH(o2::tof::Geo::getECHFromCH(i.getCH2()));

for (unsigned int i = 0; i < cosmics.size(); i++) {
if (cosmics.size() > i + 2) {
if (fabs(cosmics[i].getT1() - cosmics[i + 2].getT1()) < 2E3) {
continue;
}
}

const o2::tof::CosmicInfo cosmic = cosmics[i];
if (cosmic.getL() < mSelMinLength) {
continue;
}
const int crate1 = o2::tof::Geo::getCrateFromECH(o2::tof::Geo::getECHFromCH(cosmic.getCH1()));
const int crate2 = o2::tof::Geo::getCrateFromECH(o2::tof::Geo::getECHFromCH(cosmic.getCH2()));
mHistoCrate1->Fill(crate1);
mHistoCrate2->Fill(crate2);
mHistoCrate1VsCrate2->Fill(crate1, crate2);
mHistoDeltaT->Fill(i.getDeltaTime());
mHistoToT1->Fill(i.getTOT1());
mHistoToT2->Fill(i.getTOT2());
mHistoLength->Fill(i.getL());
mHistoDeltaTLength->Fill(i.getL(), i.getDeltaTime());
if (abs(i.getDeltaTime()) < mSelDeltaTSignalRegion) {
mHistoDeltaT->Fill(cosmic.getDeltaTime());
mHistoToT1->Fill(cosmic.getTOT1());
mHistoToT2->Fill(cosmic.getTOT2());
mHistoLength->Fill(cosmic.getL());
mHistoDeltaTLength->Fill(cosmic.getL(), cosmic.getDeltaTime());
if (abs(cosmic.getDeltaTime()) < mSelDeltaTSignalRegion) {
mCounterPeak.Count(crate1);
mCounterPeak.Count(crate2);
} else if (abs(i.getDeltaTime()) < mSelDeltaTBackgroundRegion) {
} else if (abs(cosmic.getDeltaTime()) < mSelDeltaTBackgroundRegion) {
mCounterPeak.Add(crate1, -1);
mCounterPeak.Add(crate2, -1);
}
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3 changes: 2 additions & 1 deletion Modules/TOF/tofcosmics.json
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Expand Up @@ -37,7 +37,8 @@
},
"taskParameters": {
"SelDeltaTSignalRegion": "50000",
"SelDeltaTBackgroundRegion": "100000"
"SelDeltaTBackgroundRegion": "100000",
"SelMinLength": "500"
},
"location": "remote"
}
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