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/* |
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* CaloGeomCut.cpp |
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* |
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* Created on: 19-mar-2009 |
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* Author: Sergio Ricciarini, Nicola Mori |
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*/ |
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/*! @file CaloGeomCut.cpp The CaloCrossCut class implementation file */ |
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#ifndef NO_CALOAXIS |
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#include "CaloGeomCut.h" |
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int CaloGeomCut::Check(PamLevel2 *event) { |
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Float_t xCaloTrack = 0.; |
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Float_t yCaloTrack = 0.; |
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Double_t tanx, tany, beta; |
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Float_t alCaloTop[5]; // MUST be Float_t |
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Int_t nPoint = TrkParams::nGF+1; // MUST be Int_t |
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Float_t zIn[nPoint]; // MUST be Float_t |
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Trajectory* traj = NULL; |
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static const Float_t zCaloTop=-26.181; // cm MUST Float_t |
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tanx=_xCaloAxis->par[1]; |
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tany=_yCaloAxis->par[1]; |
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if (_iMethod==0) { |
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} |
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else if (_iMethod==1) { // curved track in the Pamela acceptance (back-propagated starting from the straight track in the calorimeter, evaluated at the top of calorimeter, which is of course better than at higher z coordinates) |
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for (Int_t igf = 0; igf < TrkParams::nGF; igf++) { |
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zIn[igf]=TrkParams::zGF[igf]; |
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} |
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zIn[TrkParams::nGF]=zCaloTop; |
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traj = (Trajectory*) new Trajectory(nPoint,zIn); |
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alCaloTop[0]=_xCaloAxis->GetYfit(zCaloTop); // Yfit [xCaloTop] |
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alCaloTop[1]=_yCaloAxis->GetYfit(zCaloTop); // Yfit [yCaloTop] |
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alCaloTop[2]=sin(atan(sqrt(pow(tanx,2)+pow(tany,2)))); // [sintheta] |
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alCaloTop[3]=TMath::Pi()+atan2(tany,tanx); // [phi] |
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beta = event->GetToFLevel2()->CalcBeta(0,_resMax,_qualCut,_chi2Cut); // TOF stand-alone beta |
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alCaloTop[4] = 1./(_mass*beta/sqrt(1.-pow(beta,2))); // [etaP] [rho = (m/Z)*(beta/(sqrt(1-beta^2)))] |
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traj->DoTrack(alCaloTop,zCaloTop); |
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} |
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else { |
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return 1; |
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} |
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for (Int_t igf = 0; igf < TrkParams::nGF; igf++) { |
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if (_iMethod==0) { // straight track |
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// NOTE: par[0] is the x (y) coordinate on plane z=0 in PAMELA reference (magnet centre) |
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xCaloTrack = _xCaloAxis->par[0] + tanx * TrkParams::zGF[igf]; // cm |
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yCaloTrack = _yCaloAxis->par[0] + tany * TrkParams::zGF[igf]; // cm |
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} |
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else if (_iMethod==1) { |
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xCaloTrack = traj->x[igf]; |
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yCaloTrack = traj->y[igf]; |
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} |
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if (! (TrkParams::xGF_min[igf] + _xTolCaloTrack < xCaloTrack && xCaloTrack < TrkParams::xGF_max[igf] |
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- _xTolCaloTrack) ) { |
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return 0; |
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} |
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if (! (TrkParams::yGF_min[igf] + _yTolCaloTrack < yCaloTrack && yCaloTrack < TrkParams::yGF_max[igf] |
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- _yTolCaloTrack) ) { |
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return 0; |
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} |
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} |
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return CUTOK; |
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} |
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#endif /* NO_CALOAXIS */ |
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