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[ALICE3] Adding dummy nSigma values in RICH tables to avoid mismatch with trac… #11746

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Merged
njacazio merged 3 commits into from
Jun 24, 2025
Merged

[ALICE3] Adding dummy nSigma values in RICH tables to avoid mismatch with trac… #11746

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5601ba0
Adding dummy nSigma values in RICH tables to avoid mismatch with trac…
Jun 24, 2025
b2d1831
Adding dummy nSigma values in RICH tables to avoid mismatch with trac…
Jun 24, 2025
2223876
Update onTheFlyRichPid.cxx
njacazio Jun 24, 2025
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13 changes: 10 additions & 3 deletions ALICE3/TableProducer/OTF/onTheFlyRichPid.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -230,19 +230,19 @@
l_aerogel_z[i_central_mirror] = std::sqrt(1.0 + m_val * m_val) * R_min * square_size_barrel_cylinder / (std::sqrt(1.0 + m_val * m_val) * R_max - m_val * square_size_barrel_cylinder);
T_r_plus_g[i_central_mirror] = R_max - R_min;
float t = std::tan(std::atan(m_val) + std::atan(square_size_barrel_cylinder / (2.0 * R_max * std::sqrt(1.0 + m_val * m_val) - square_size_barrel_cylinder * m_val)));
theta_max[i_central_mirror] = M_PI / 2.0 - std::atan(t);

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.
theta_min[i_central_mirror] = M_PI / 2.0 + std::atan(t);

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.
mProjectiveLengthInner = R_min * t;
aerogel_rindex[i_central_mirror] = bRichRefractiveIndexSector[0];
for (int i = i_central_mirror + 1; i < number_of_sectors_in_z; i++) {
float par_a = t;
float par_b = 2.0 * R_max / square_size_z;
m_val = (std::sqrt(par_a * par_a * par_b * par_b + par_b * par_b - 1.0) + par_a * par_b * par_b) / (par_b * par_b - 1.0);
theta_min[i] = M_PI / 2.0 - std::atan(t);

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.
theta_max[2 * i_central_mirror - i] = M_PI / 2.0 + std::atan(t);

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.
t = std::tan(std::atan(m_val) + std::atan(square_size_z / (2.0 * R_max * std::sqrt(1.0 + m_val * m_val) - square_size_z * m_val)));
theta_max[i] = M_PI / 2.0 - std::atan(t);

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.
theta_min[2 * i_central_mirror - i] = M_PI / 2.0 + std::atan(t);

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.
// Forward sectors
theta_bi[i] = std::atan(m_val);
R0_tilt[i] = R_max - square_size_z / 2.0 * std::sin(std::atan(m_val));
Expand Down Expand Up @@ -271,11 +271,11 @@
float par_a = t;
float par_b = 2.0 * R_max / square_size_z;
m_val = (std::sqrt(par_a * par_a * par_b * par_b + par_b * par_b - 1.0) + par_a * par_b * par_b) / (par_b * par_b - 1.0);
theta_min[i] = M_PI / 2.0 - std::atan(t);

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.
theta_max[2 * i_central_mirror - i - 1] = M_PI / 2.0 + std::atan(t);

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.
t = std::tan(std::atan(m_val) + std::atan(square_size_z / (2.0 * R_max * std::sqrt(1.0 + m_val * m_val) - square_size_z * m_val)));
theta_max[i] = M_PI / 2.0 - std::atan(t);

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.
theta_min[2 * i_central_mirror - i - 1] = M_PI / 2.0 + std::atan(t);

Check failure on line 278 in ALICE3/TableProducer/OTF/onTheFlyRichPid.cxx

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[external-pi] 

Use the PI constant (and its multiples and fractions) defined in o2::constants::math.
// Forward sectors
theta_bi[i] = std::atan(m_val);
R0_tilt[i] = R_max - square_size_z / 2.0 * std::sin(std::atan(m_val));
Expand Down Expand Up @@ -745,10 +745,15 @@
}

for (const auto& track : tracks) {

float nSigmaBarrelRich[5] = {error_value, error_value, error_value, error_value, error_value};

// first step: find precise arrival time (if any)
// --- convert track into perfect track
if (!track.has_mcParticle()) // should always be OK but check please
if (!track.has_mcParticle()) { // should always be OK but check please
upgradeRich(nSigmaBarrelRich[0], nSigmaBarrelRich[1], nSigmaBarrelRich[2], nSigmaBarrelRich[3], nSigmaBarrelRich[4]);
continue;
}

auto mcParticle = track.mcParticle();
o2::track::TrackParCov o2track = o2::upgrade::convertMCParticleToO2Track(mcParticle, pdg);
Expand All @@ -761,12 +766,14 @@
// get particle to calculate Cherenkov angle and resolution
auto pdgInfo = pdg->GetParticle(mcParticle.pdgCode());
if (pdgInfo == nullptr) {
upgradeRich(nSigmaBarrelRich[0], nSigmaBarrelRich[1], nSigmaBarrelRich[2], nSigmaBarrelRich[3], nSigmaBarrelRich[4]);
continue;
}

// find track bRICH sector
int i_sector = findSector(o2track.getEta());
if (i_sector < 0) {
upgradeRich(nSigmaBarrelRich[0], nSigmaBarrelRich[1], nSigmaBarrelRich[2], nSigmaBarrelRich[3], nSigmaBarrelRich[4]);
continue;
}

Expand Down Expand Up @@ -794,12 +801,12 @@
}

// Straight to Nsigma
float deltaThetaBarrelRich[5], nSigmaBarrelRich[5];
float deltaThetaBarrelRich[5]; //, nSigmaBarrelRich[5];
int lpdg_array[5] = {kElectron, kMuonMinus, kPiPlus, kKPlus, kProton};
float masses[5];

for (int ii = 0; ii < 5; ii++) {
nSigmaBarrelRich[ii] = error_value;
// nSigmaBarrelRich[ii] = error_value;

auto pdgInfoThis = pdg->GetParticle(lpdg_array[ii]);
masses[ii] = pdgInfoThis->Mass();
Expand Down
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