/************************************************************************** * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * * * Author: The ALICE Off-line Project. * * Contributors are mentioned in the code where appropriate. * * * * Permission to use, copy, modify and distribute this software and its * * documentation strictly for non-commercial purposes is hereby granted * * without fee, provided that the above copyright notice appears in all * * copies and that both the copyright notice and this permission notice * * appear in the supporting documentation. The authors make no claims * * about the suitability of this software for any purpose. It is * * provided "as is" without express or implied warranty. * **************************************************************************/ /* $Id$ */ /////////////////////////////////////////////////////////////////////////////// // // // TRD parameter class // // // /////////////////////////////////////////////////////////////////////////////// #include #include "AliRun.h" #include "AliMagF.h" #include "AliTRDparameter.h" #include "AliTRDgeometryFull.h" ClassImp(AliTRDparameter) //_____________________________________________________________________________ AliTRDparameter::AliTRDparameter():TNamed() { // // AliTRDparameter default constructor // fGeo = 0; fPRFsmp = 0; fTRFsmp = 0; fCTsmp = 0; fGasGain = 0.0; fNoise = 0.0; fChipGain = 0.0; fADCoutRange = 0.0; fADCinRange = 0.0; fADCthreshold = 0; fADCbaseline = 0; fDiffusionOn = 0; fDiffusionT = 0.0; fDiffusionL = 0.0; fElAttachOn = 0; fElAttachProp = 0.0; fExBOn = 0; fOmegaTau = 0.0; fPRFOn = 0; fTRFOn = 0; fCTOn = 0; fTCOn = 0; fDriftVelocity = 0.0; fPadCoupling = 0.0; fTimeCoupling = 0.0; fTimeBinWidth = 0.0; fField = 0.0; fTiltingAngle = 0.0; fPRFbin = 0; fPRFlo = 0.0; fPRFhi = 0.0; fPRFwid = 0.0; fPRFpad = 0; fTRFbin = 0; fTRFlo = 0.0; fTRFhi = 0.0; fTRFwid = 0.0; fTCnexp = 0; fLUTOn = 0; fLUT = 0; fClusMaxThresh = 0; fClusSigThresh = 0; } //_____________________________________________________________________________ AliTRDparameter::AliTRDparameter(const Text_t *name, const Text_t *title) :TNamed(name,title) { // // AliTRDparameter constructor // fGeo = new AliTRDgeometryFull(); fPRFsmp = 0; fTRFsmp = 0; fCTsmp = 0; fGasGain = 0.0; fNoise = 0.0; fChipGain = 0.0; fADCoutRange = 0.0; fADCinRange = 0.0; fADCthreshold = 0; fADCbaseline = 0; fDiffusionOn = 0; fDiffusionT = 0.0; fDiffusionL = 0.0; fElAttachOn = 0; fElAttachProp = 0.0; fExBOn = 0; fOmegaTau = 0.0; fPRFOn = 0; fTRFOn = 0; fCTOn = 0; fTCOn = 0; fDriftVelocity = 0.0; fPadCoupling = 0.0; fTimeCoupling = 0.0; fTimeBinWidth = 0.0; fField = 0.0; fTiltingAngle = 0.0; fPRFbin = 0; fPRFlo = 0.0; fPRFhi = 0.0; fPRFwid = 0.0; fPRFpad = 0; fTRFbin = 0; fTRFlo = 0.0; fTRFhi = 0.0; fTRFwid = 0.0; fTCnexp = 0; fLUTOn = 0; fLUT = 0; fClusMaxThresh = 0; fClusSigThresh = 0; Init(); } //_____________________________________________________________________________ AliTRDparameter::AliTRDparameter(const AliTRDparameter &p):TNamed(p) { // // AliTRDparameter copy constructor // ((AliTRDparameter &) p).Copy(*this); } ///_____________________________________________________________________________ AliTRDparameter::~AliTRDparameter() { // // AliTRDparameter destructor // if (fTRFsmp) { delete [] fTRFsmp; fTRFsmp = 0; } if (fPRFsmp) { delete [] fPRFsmp; fPRFsmp = 0; } if (fCTsmp) { delete [] fCTsmp; fCTsmp = 0; } if (fLUT) { delete [] fLUT; fLUT = 0; } if (fGeo) { delete fGeo; fGeo = 0; } } //_____________________________________________________________________________ AliTRDparameter &AliTRDparameter::operator=(const AliTRDparameter &p) { // // Assignment operator // if (this != &p) ((AliTRDparameter &) p).Copy(*this); return *this; } //_____________________________________________________________________________ void AliTRDparameter::Copy(TObject &p) { // // Copy function // Int_t iBin; ((AliTRDparameter &) p).fGasGain = fGasGain; ((AliTRDparameter &) p).fNoise = fNoise; ((AliTRDparameter &) p).fChipGain = fChipGain; ((AliTRDparameter &) p).fADCoutRange = fADCoutRange; ((AliTRDparameter &) p).fADCinRange = fADCinRange; ((AliTRDparameter &) p).fADCthreshold = fADCthreshold; ((AliTRDparameter &) p).fADCbaseline = fADCbaseline; ((AliTRDparameter &) p).fDiffusionOn = fDiffusionOn; ((AliTRDparameter &) p).fDiffusionT = fDiffusionT; ((AliTRDparameter &) p).fDiffusionL = fDiffusionL; ((AliTRDparameter &) p).fElAttachOn = fElAttachOn; ((AliTRDparameter &) p).fElAttachProp = fElAttachProp; ((AliTRDparameter &) p).fExBOn = fExBOn; ((AliTRDparameter &) p).fOmegaTau = fOmegaTau; ((AliTRDparameter &) p).fLorentzFactor = fLorentzFactor; ((AliTRDparameter &) p).fDriftVelocity = fDriftVelocity; ((AliTRDparameter &) p).fPadCoupling = fPadCoupling; ((AliTRDparameter &) p).fTimeCoupling = fTimeCoupling; ((AliTRDparameter &) p).fTimeBinWidth = fTimeBinWidth; ((AliTRDparameter &) p).fField = fField; ((AliTRDparameter &) p).fPRFOn = fPRFOn; ((AliTRDparameter &) p).fTRFOn = fTRFOn; ((AliTRDparameter &) p).fCTOn = fCTOn; ((AliTRDparameter &) p).fTCOn = fTCOn; ((AliTRDparameter &) p).fTiltingAngle = fTiltingAngle; ((AliTRDparameter &) p).fPRFbin = fPRFbin; ((AliTRDparameter &) p).fPRFlo = fPRFlo; ((AliTRDparameter &) p).fPRFhi = fPRFhi; ((AliTRDparameter &) p).fPRFwid = fPRFwid; ((AliTRDparameter &) p).fPRFpad = fPRFpad; if (((AliTRDparameter &) p).fPRFsmp) delete [] ((AliTRDparameter &) p).fPRFsmp; ((AliTRDparameter &) p).fPRFsmp = new Float_t[fPRFbin]; for (iBin = 0; iBin < fPRFbin; iBin++) { ((AliTRDparameter &) p).fPRFsmp[iBin] = fPRFsmp[iBin]; } ((AliTRDparameter &) p).fTRFbin = fTRFbin; ((AliTRDparameter &) p).fTRFlo = fTRFlo; ((AliTRDparameter &) p).fTRFhi = fTRFhi; ((AliTRDparameter &) p).fTRFwid = fTRFwid; if (((AliTRDparameter &) p).fTRFsmp) delete [] ((AliTRDparameter &) p).fTRFsmp; ((AliTRDparameter &) p).fTRFsmp = new Float_t[fTRFbin]; for (iBin = 0; iBin < fTRFbin; iBin++) { ((AliTRDparameter &) p).fTRFsmp[iBin] = fTRFsmp[iBin]; } if (((AliTRDparameter &) p).fCTsmp) delete [] ((AliTRDparameter &) p).fCTsmp; ((AliTRDparameter &) p).fCTsmp = new Float_t[fTRFbin]; for (iBin = 0; iBin < fTRFbin; iBin++) { ((AliTRDparameter &) p).fCTsmp[iBin] = fCTsmp[iBin]; } ((AliTRDparameter &) p).fTCnexp = fTCnexp; ((AliTRDparameter &) p).fLUTOn = fLUTOn; ((AliTRDparameter &) p).fLUTbin = fLUTbin; if (((AliTRDparameter &) p).fLUT) delete [] ((AliTRDparameter &) p).fLUT; ((AliTRDparameter &) p).fLUT = new Float_t[fLUTbin]; for (iBin = 0; iBin < fLUTbin; iBin++) { ((AliTRDparameter &) p).fLUT[iBin] = fLUT[iBin]; } ((AliTRDparameter &) p).fClusMaxThresh = fClusMaxThresh; ((AliTRDparameter &) p).fClusSigThresh = fClusSigThresh; } //_____________________________________________________________________________ void AliTRDparameter::Init() { // // Initializes the parameter // // The maximum number of pads // and the position of pad 0,0,0 // // chambers seen from the top: // +----------------------------+ // | | // | | ^ // | | rphi| // | | | // |0 | | // +----------------------------+ +------> // z // chambers seen from the side: ^ // +----------------------------+ drift| // |0 | | // | | | // +----------------------------+ +------> // z // // IMPORTANT: time bin 0 is now the first one in the drift region // closest to the readout !!! // // // ---------------------------------------------------------------------------- // The pad definition // ---------------------------------------------------------------------------- // // The pad size in column direction (rphi-direction) SetColPadSize(0,0.65); SetColPadSize(1,0.68); SetColPadSize(2,0.71); SetColPadSize(3,0.74); SetColPadSize(4,0.77); SetColPadSize(5,0.80); // New pad size? Needs to be checked! //SetColPadSize(0,0.664); //SetColPadSize(1,0.695); //SetColPadSize(2,0.726); //SetColPadSize(3,0.756); //SetColPadSize(4,0.788); //SetColPadSize(5,0.818); // The pad row (z-direction) SetNRowPad(); // The number of time bins. Default is 100 ns timbin size SetNTimeBin(15); // Additional time bins before and after the drift region. // Default is to only sample the drift region SetExpandTimeBin(0,0); // // ---------------------------------------------------------------------------- // The digitization parameter // ---------------------------------------------------------------------------- // // The default parameter for the digitization fGasGain = 4500.; fChipGain = 12.4; fNoise = 1000.; fADCoutRange = 1023.; // 10-bit ADC fADCinRange = 2000.; // 2V input range fADCthreshold = 1; fADCbaseline = 0; // The drift velocity (cm / mus) fDriftVelocity = 1.5; // Diffusion on fDiffusionOn = 1; // E x B effects fExBOn = 1; // Propability for electron attachment fElAttachOn = 0; fElAttachProp = 0.0; // The pad response function fPRFOn = 1; // The time response function fTRFOn = 1; // The cross talk fCTOn = 1; // The tail cancelation fTCOn = 1; // The number of exponentials fTCnexp = 2; // The pad coupling factor (same number as for the TPC) fPadCoupling = 0.5; // The time coupling factor (same number as for the TPC) fTimeCoupling = 0.4; // The tilting angle for the readout pads SetTiltingAngle(2.0); // The magnetic field strength in Tesla fField = 0.4; // // ---------------------------------------------------------------------------- // The clusterization parameter // ---------------------------------------------------------------------------- // // The default parameter for the clustering fClusMaxThresh = 3; fClusSigThresh = 1; // Use the LUT fLUTOn = 1; ReInit(); } //_____________________________________________________________________________ void AliTRDparameter::ReInit() { // // Reinitializes the parameter class after a change // // Calculate the time bin width in ns fTimeBinWidth = fTimeBinSize / fDriftVelocity * 1000.0; // The range and the binwidth for the sampled TRF fTRFbin = 100; // Start 0.2 mus before the signal fTRFlo = -0.2 * fDriftVelocity; // End the maximum driftlength after the signal fTRFhi = AliTRDgeometry::DrThick() + fTimeAfter * fTimeBinSize; fTRFwid = (fTRFhi - fTRFlo) / ((Float_t) fTRFbin); // Transverse and longitudinal diffusion coefficients (Xe/CO2) fDiffusionT = GetDiffusionT(fDriftVelocity,fField); fDiffusionL = GetDiffusionL(fDriftVelocity,fField); // omega * tau.= tan(Lorentz-angle) fOmegaTau = GetOmegaTau(fDriftVelocity,fField); // The Lorentz factor if (fExBOn) { fLorentzFactor = 1.0 / (1.0 + fOmegaTau*fOmegaTau); } else { fLorentzFactor = 1.0; } // Create the sampled PRF SamplePRF(); // Create the sampled TRF SampleTRF(); // Create the LUT FillLUT(); } //_____________________________________________________________________________ void AliTRDparameter::SetNRowPad(Int_t p, Int_t c, Int_t npad) { // // Redefines the number of pads in raw direction for // a given plane and chamber number // for (Int_t isect = 0; isect < AliTRDgeometry::Nsect(); isect++) { fRowMax[p][c][isect] = npad; fRowPadSize[p][c][isect] = (fGeo->GetChamberLength(p,c) - 2.* AliTRDgeometry::RpadW()) / ((Float_t) npad); } } //_____________________________________________________________________________ void AliTRDparameter::SetNRowPad() { // // Defines the number of pads in row direction // Int_t isect; Int_t icham; Int_t iplan; Int_t rowMax[kNplan][kNcham] = { { 16, 16, 12, 16, 16 } , { 16, 16, 12, 16, 16 } , { 16, 16, 12, 16, 16 } , { 16, 16, 12, 16, 16 } , { 16, 16, 12, 16, 16 } , { 16, 16, 12, 16, 16 } }; Float_t rpadW = AliTRDgeometry::RpadW(); for (isect = 0; isect < kNsect; isect++) { for (icham = 0; icham < kNcham; icham++) { for (iplan = 0; iplan < kNplan; iplan++) { fRowMax[iplan][icham][isect] = rowMax[iplan][icham]; fRowPadSize[iplan][icham][isect] = (fGeo->GetChamberLength(iplan,icham) - 2.*rpadW) / ((Float_t) rowMax[iplan][icham]); Float_t row0 = rpadW - fGeo->GetChamberLength(iplan,0) - fGeo->GetChamberLength(iplan,1) - fGeo->GetChamberLength(iplan,2) / 2.; for (Int_t ic = 0; ic < icham; ic++) { row0 += fGeo->GetChamberLength(iplan,ic); } fRow0[iplan][icham][isect] = row0; } } } } //_____________________________________________________________________________ void AliTRDparameter::SetColPadSize(Int_t p, Float_t s) { // // Redefines the pad size in column direction // Float_t cpadW = AliTRDgeometry::CpadW(); fColPadSize[p] = s; fCol0[p] = - fGeo->GetChamberWidth(p)/2. + cpadW; fColMax[p] = ((Int_t) ((fGeo->GetChamberWidth(p) - 2.*cpadW) / s)); } //_____________________________________________________________________________ void AliTRDparameter::SetNTimeBin(Int_t nbin) { // // Redefines the number of time bins in the drift region. // The time bin width is defined by the length of the // drift region divided by . // fTimeMax = nbin; fTimeBinSize = AliTRDgeometry::DrThick() / ((Float_t) fTimeMax); for (Int_t iplan = 0; iplan < AliTRDgeometry::Nplan(); iplan++) { fTime0[iplan] = AliTRDgeometry::Rmin() + AliTRDgeometry::CraHght() + AliTRDgeometry::CdrHght() + iplan * (AliTRDgeometry::Cheight() + AliTRDgeometry::Cspace()); } } //_____________________________________________________________________________ Float_t AliTRDparameter::CrossTalk(Float_t time) const { // // Applies the pad-pad capacitive cross talk // Int_t iBin = ((Int_t) ((time - fTRFlo) / fTRFwid)); if ((iBin >= 0) && (iBin < fTRFbin)) { return fCTsmp[iBin]; } else { return 0.0; } } //_____________________________________________________________________________ Int_t AliTRDparameter::Diffusion(Float_t driftlength, Float_t *xyz) { // // Applies the diffusion smearing to the position of a single electron // Float_t driftSqrt = TMath::Sqrt(driftlength); Float_t sigmaT = driftSqrt * fDiffusionT; Float_t sigmaL = driftSqrt * fDiffusionL; xyz[0] = gRandom->Gaus(xyz[0], sigmaL * fLorentzFactor); xyz[1] = gRandom->Gaus(xyz[1], sigmaT * fLorentzFactor); xyz[2] = gRandom->Gaus(xyz[2], sigmaT); return 1; } //_____________________________________________________________________________ Int_t AliTRDparameter::ExB(Float_t driftlength, Float_t *xyz) const { // // Applies E x B effects to the position of a single electron // xyz[0] = xyz[0]; xyz[1] = xyz[1] + fOmegaTau * driftlength; xyz[2] = xyz[2]; return 1; } //_____________________________________________________________________________ Int_t AliTRDparameter::PadResponse(Float_t signal, Float_t dist , Int_t plane, Float_t *pad) const { // // Applies the pad response // const Int_t kNplan = AliTRDgeometry::kNplan; Int_t iBin = ((Int_t) (( - dist - fPRFlo) / fPRFwid)); Int_t iOff = plane * fPRFbin; Int_t iBin0 = iBin - fPRFpad + iOff; Int_t iBin1 = iBin + iOff; Int_t iBin2 = iBin + fPRFpad + iOff; pad[0] = 0.0; pad[1] = 0.0; pad[2] = 0.0; if ((iBin1 >= 0) && (iBin1 < (fPRFbin*kNplan))) { if (iBin0 >= 0) { pad[0] = signal * fPRFsmp[iBin0]; } pad[1] = signal * fPRFsmp[iBin1]; if (iBin2 < (fPRFbin*kNplan)) { pad[2] = signal * fPRFsmp[iBin2]; } return 1; } else { return 0; } } //_____________________________________________________________________________ Float_t AliTRDparameter::TimeResponse(Float_t time) const { // // Applies the preamp shaper time response // Int_t iBin = ((Int_t) ((time - fTRFlo) / fTRFwid)); if ((iBin >= 0) && (iBin < fTRFbin)) { return fTRFsmp[iBin]; } else { return 0.0; } } //_____________________________________________________________________________ Float_t AliTRDparameter::Col0Tilted(Float_t col0, Float_t rowOffset , Int_t plane) { // // Calculates col0 for tilted pads // Float_t diff = fTiltingAngle * rowOffset; return (col0 + TMath::Power(-1.0,plane) * diff); } //_____________________________________________________________________________ void AliTRDparameter::SampleTRF() { // // Samples the time response function // // New TRF from Venelin Angelov, simulated with CADENCE // Pad-ground capacitance = 25 pF // Pad-pad cross talk capacitance = 6 pF // Int_t ipos1; Int_t ipos2; Float_t diff; const Int_t kNpasa = 252; Float_t time[kNpasa] = { -0.220000, -0.210000, -0.200000, -0.190000 , -0.180000, -0.170000, -0.160000, -0.150000 , -0.140000, -0.130000, -0.120000, -0.110000 , -0.100000, -0.090000, -0.080000, -0.070000 , -0.060000, -0.050000, -0.040000, -0.030000 , -0.020000, -0.010000, -0.000000, 0.010000 , 0.020000, 0.030000, 0.040000, 0.050000 , 0.060000, 0.070000, 0.080000, 0.090000 , 0.100000, 0.110000, 0.120000, 0.130000 , 0.140000, 0.150000, 0.160000, 0.170000 , 0.180000, 0.190000, 0.200000, 0.210000 , 0.220000, 0.230000, 0.240000, 0.250000 , 0.260000, 0.270000, 0.280000, 0.290000 , 0.300000, 0.310000, 0.320000, 0.330000 , 0.340000, 0.350000, 0.360000, 0.370000 , 0.380000, 0.390000, 0.400000, 0.410000 , 0.420000, 0.430000, 0.440000, 0.450000 , 0.460000, 0.470000, 0.480000, 0.490000 , 0.500000, 0.510000, 0.520000, 0.530000 , 0.540000, 0.550000, 0.560000, 0.570000 , 0.580000, 0.590000, 0.600000, 0.610000 , 0.620000, 0.630000, 0.640000, 0.650000 , 0.660000, 0.670000, 0.680000, 0.690000 , 0.700000, 0.710000, 0.720000, 0.730000 , 0.740000, 0.750000, 0.760000, 0.770000 , 0.780000, 0.790000, 0.800000, 0.810000 , 0.820000, 0.830000, 0.840000, 0.850000 , 0.860000, 0.870000, 0.880000, 0.890000 , 0.900000, 0.910000, 0.920000, 0.930000 , 0.940000, 0.950000, 0.960000, 0.970000 , 0.980000, 0.990000, 1.000000, 1.010000 , 1.020000, 1.030000, 1.040000, 1.050000 , 1.060000, 1.070000, 1.080000, 1.090000 , 1.100000, 1.110000, 1.120000, 1.130000 , 1.140000, 1.150000, 1.160000, 1.170000 , 1.180000, 1.190000, 1.200000, 1.210000 , 1.220000, 1.230000, 1.240000, 1.250000 , 1.260000, 1.270000, 1.280000, 1.290000 , 1.300000, 1.310000, 1.320000, 1.330000 , 1.340000, 1.350000, 1.360000, 1.370000 , 1.380000, 1.390000, 1.400000, 1.410000 , 1.420000, 1.430000, 1.440000, 1.450000 , 1.460000, 1.470000, 1.480000, 1.490000 , 1.500000, 1.510000, 1.520000, 1.530000 , 1.540000, 1.550000, 1.560000, 1.570000 , 1.580000, 1.590000, 1.600000, 1.610000 , 1.620000, 1.630000, 1.640000, 1.650000 , 1.660000, 1.670000, 1.680000, 1.690000 , 1.700000, 1.710000, 1.720000, 1.730000 , 1.740000, 1.750000, 1.760000, 1.770000 , 1.780000, 1.790000, 1.800000, 1.810000 , 1.820000, 1.830000, 1.840000, 1.850000 , 1.860000, 1.870000, 1.880000, 1.890000 , 1.900000, 1.910000, 1.920000, 1.930000 , 1.940000, 1.950000, 1.960000, 1.970000 , 1.980000, 1.990000, 2.000000, 2.010000 , 2.020000, 2.030000, 2.040000, 2.050000 , 2.060000, 2.070000, 2.080000, 2.090000 , 2.100000, 2.110000, 2.120000, 2.130000 , 2.140000, 2.150000, 2.160000, 2.170000 , 2.180000, 2.190000, 2.200000, 2.210000 , 2.220000, 2.230000, 2.240000, 2.250000 , 2.260000, 2.270000, 2.280000, 2.290000 }; Float_t signal[kNpasa] = { 0.000000, 0.000000, 0.000000, 0.000000 , 0.000000, 0.000000, 0.000000, 0.000396 , 0.005096, 0.022877, 0.061891, 0.126614 , 0.215798, 0.324406, 0.444507, 0.566817 , 0.683465, 0.787089, 0.873159, 0.937146 , 0.979049, 0.999434, 1.000000, 0.983579 , 0.954134, 0.913364, 0.866365, 0.813703 , 0.759910, 0.706116, 0.653454, 0.603624 , 0.556625, 0.514156, 0.475085, 0.439977 , 0.408834, 0.380578, 0.355549, 0.333352 , 0.313647, 0.296093, 0.280351, 0.266195 , 0.253397, 0.241789, 0.231257, 0.221574 , 0.212627, 0.204417, 0.196772, 0.189581 , 0.182956, 0.176784, 0.171008, 0.165515 , 0.160419, 0.155606, 0.151076, 0.146716 , 0.142639, 0.138845, 0.135221, 0.131767 , 0.128482, 0.125368, 0.122424, 0.119592 , 0.116931, 0.114326, 0.111891, 0.109513 , 0.107248, 0.105096, 0.103058, 0.101019 , 0.099151, 0.097282, 0.095527, 0.093715 , 0.092129, 0.090544, 0.088958, 0.087429 , 0.086014, 0.084598, 0.083239, 0.081880 , 0.080634, 0.079388, 0.078143, 0.077010 , 0.075878, 0.074745, 0.073669, 0.072593 , 0.071574, 0.070612, 0.069649, 0.068686 , 0.067780, 0.066874, 0.066025, 0.065176 , 0.064326, 0.063533, 0.062684, 0.061948 , 0.061212, 0.060419, 0.059740, 0.059003 , 0.058324, 0.057644, 0.057022, 0.056342 , 0.055663, 0.055096, 0.054473, 0.053851 , 0.053284, 0.052718, 0.052152, 0.051585 , 0.051019, 0.050566, 0.050000, 0.049490 , 0.048981, 0.048528, 0.048018, 0.047508 , 0.047055, 0.046602, 0.046149, 0.045696 , 0.045300, 0.044904, 0.044451, 0.044054 , 0.043658, 0.043205, 0.042865, 0.042469 , 0.042072, 0.041733, 0.041336, 0.040997 , 0.040657, 0.040260, 0.039921, 0.039581 , 0.039241, 0.038958, 0.038618, 0.038335 , 0.037995, 0.037656, 0.037373, 0.037089 , 0.036806, 0.036467, 0.036183, 0.035900 , 0.035617, 0.035334, 0.035108, 0.034824 , 0.034541, 0.034315, 0.034032, 0.033805 , 0.033522, 0.033296, 0.033069, 0.032786 , 0.032559, 0.032333, 0.032106, 0.031880 , 0.031653, 0.031427, 0.031200, 0.030974 , 0.030804, 0.030578, 0.030351, 0.030125 , 0.029955, 0.029785, 0.029558, 0.029332 , 0.029162, 0.028992, 0.028766, 0.028596 , 0.028426, 0.028199, 0.028086, 0.027860 , 0.027746, 0.027633, 0.027463, 0.027293 , 0.027180, 0.027067, 0.026954, 0.026954 , 0.026840, 0.026727, 0.026727, 0.026614 , 0.026614, 0.026614, 0.026557, 0.026501 , 0.026501, 0.026501, 0.026501, 0.026501 , 0.026501, 0.026501, 0.026501, 0.026387 , 0.026387, 0.026387, 0.026387, 0.026387 , 0.026387, 0.026387, 0.026387, 0.026387 , 0.026387, 0.026387, 0.026387, 0.026387 , 0.026387, 0.026274, 0.026274, 0.026274 , 0.026274, 0.026274, 0.026274, 0.026274 , 0.026274, 0.026274, 0.026274, 0.026274 , 0.026274, 0.026274, 0.026274, 0.026161 }; Float_t xtalk[kNpasa] = { 0.000000, 0.000000, 0.000000, 0.000000 , 0.000000, 0.000000, 0.000000, 0.000113 , 0.000793, 0.003058, 0.007305, 0.013194 , 0.019706, 0.025821, 0.030634, 0.033465 , 0.034145, 0.032729, 0.029615, 0.025198 , 0.019989, 0.014496, 0.009003, 0.003964 , -0.000510, -0.004190, -0.007191, -0.009400 , -0.010872, -0.011835, -0.012288, -0.012288 , -0.012005, -0.011495, -0.010872, -0.010136 , -0.009343, -0.008607, -0.007871, -0.007191 , -0.006512, -0.005946, -0.005379, -0.004926 , -0.004473, -0.004077, -0.003737, -0.003398 , -0.003114, -0.002831, -0.002605, -0.002378 , -0.002208, -0.002039, -0.001869, -0.001699 , -0.001585, -0.001472, -0.001359, -0.001246 , -0.001132, -0.001019, -0.001019, -0.000906 , -0.000906, -0.000793, -0.000793, -0.000680 , -0.000680, -0.000680, -0.000566, -0.000566 , -0.000566, -0.000566, -0.000453, -0.000453 , -0.000453, -0.000453, -0.000453, -0.000453 , -0.000340, -0.000340, -0.000340, -0.000340 , -0.000340, -0.000340, -0.000340, -0.000340 , -0.000340, -0.000340, -0.000340, -0.000340 , -0.000340, -0.000227, -0.000227, -0.000227 , -0.000227, -0.000227, -0.000227, -0.000227 , -0.000227, -0.000227, -0.000227, -0.000227 , -0.000227, -0.000227, -0.000227, -0.000227 , -0.000227, -0.000227, -0.000227, -0.000227 , -0.000227, -0.000227, -0.000227, -0.000227 , -0.000227, -0.000227, -0.000227, -0.000227 , -0.000227, -0.000227, -0.000227, -0.000227 , -0.000227, -0.000227, -0.000227, -0.000227 , -0.000227, -0.000227, -0.000227, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, -0.000113 , -0.000113, -0.000113, -0.000113, 0.000000 , 0.000000, 0.000000, 0.000000, 0.000000 , 0.000000, 0.000000, 0.000000, 0.000000 , 0.000000, 0.000000, 0.000000, 0.000000 , 0.000000, 0.000000, 0.000000, 0.000000 , 0.000000, 0.000000, 0.000000, 0.000000 , 0.000000, 0.000000, 0.000000, 0.000000 , 0.000000, 0.000000, 0.000000, 0.000000 , 0.000000, 0.000000, 0.000000, 0.000000 , 0.000000, 0.000000, 0.000000, 0.000000 , 0.000000, 0.000000, 0.000000, 0.000000 }; // increase CrossTalk to measurements for (Int_t ipasa = 0; ipasa < kNpasa; ipasa++) { xtalk[ipasa] *= 1.75; } if (fTRFsmp) delete [] fTRFsmp; fTRFsmp = new Float_t[fTRFbin]; if (fCTsmp) delete [] fCTsmp; fCTsmp = new Float_t[fTRFbin]; Float_t loTRF = TMath::Max(fTRFlo / fDriftVelocity,time[0]); Float_t hiTRF = TMath::Min(fTRFhi / fDriftVelocity,time[kNpasa-1]); Float_t binWidth = (hiTRF - loTRF) / ((Float_t) fTRFbin); // Take the linear interpolation for (Int_t iBin = 0; iBin < fTRFbin; iBin++) { Float_t bin = (((Float_t) iBin) + 0.5) * binWidth + loTRF; ipos1 = ipos2 = 0; diff = 0; do { diff = bin - time[ipos2++]; } while (diff > 0); ipos2--; if (ipos2 >= kNpasa) ipos2 = kNpasa - 1; ipos1 = ipos2 - 1; fTRFsmp[iBin] = signal[ipos2] + diff * (signal[ipos2] - signal[ipos1]) / ( time[ipos2] - time[ipos1]); fCTsmp[iBin] = xtalk[ipos2] + diff * (xtalk[ipos2] - xtalk[ipos1]) / ( time[ipos2] - time[ipos1]); } } //_____________________________________________________________________________ void AliTRDparameter::SamplePRF() { // // Samples the pad response function // const Int_t kNplan = AliTRDgeometry::kNplan; const Int_t kPRFbin = 61; Float_t prf[kNplan][kPRFbin] = { { 0.018570, 0.022270, 0.026710, 0.032010 , 0.038350, 0.045920, 0.054930, 0.065650 , 0.078370, 0.093420, 0.111150, 0.131940 , 0.156160, 0.184160, 0.216220, 0.252470 , 0.292860, 0.337030, 0.384330, 0.433750 , 0.484010, 0.533630, 0.581150, 0.625200 , 0.664710, 0.698860, 0.727130, 0.749230 , 0.765050, 0.774540, 0.777700, 0.774540 , 0.765050, 0.749230, 0.727130, 0.698860 , 0.664710, 0.625200, 0.581150, 0.533630 , 0.484010, 0.433750, 0.384330, 0.337030 , 0.292860, 0.252470, 0.216220, 0.184160 , 0.156160, 0.131940, 0.111150, 0.093420 , 0.078370, 0.065650, 0.054930, 0.045920 , 0.038350, 0.032010, 0.026710, 0.022270 , 0.018570 } , { 0.015730, 0.019040, 0.023030, 0.027840 , 0.033650, 0.040650, 0.049060, 0.059160 , 0.071260, 0.085710, 0.102910, 0.123270 , 0.147240, 0.175220, 0.207590, 0.244540 , 0.286090, 0.331920, 0.381350, 0.433290 , 0.486290, 0.538710, 0.588870, 0.635280 , 0.676760, 0.712460, 0.741890, 0.764810 , 0.781150, 0.790930, 0.794180, 0.790930 , 0.781150, 0.764810, 0.741890, 0.712460 , 0.676760, 0.635280, 0.588870, 0.538710 , 0.486290, 0.433290, 0.381350, 0.331920 , 0.286090, 0.244540, 0.207590, 0.175220 , 0.147240, 0.123270, 0.102910, 0.085710 , 0.071260, 0.059160, 0.049060, 0.040650 , 0.033650, 0.027840, 0.023030, 0.019040 , 0.015730 } , { 0.013330, 0.016270, 0.019850, 0.024210 , 0.029510, 0.035960, 0.043790, 0.053280 , 0.064740, 0.078580, 0.095190, 0.115070 , 0.138700, 0.166570, 0.199120, 0.236660 , 0.279260, 0.326660, 0.378140, 0.432540 , 0.488260, 0.543440, 0.596200, 0.644900 , 0.688240, 0.725380, 0.755840, 0.779470 , 0.796260, 0.806280, 0.809610, 0.806280 , 0.796260, 0.779470, 0.755840, 0.725380 , 0.688240, 0.644900, 0.596200, 0.543440 , 0.488260, 0.432540, 0.378140, 0.326660 , 0.279260, 0.236660, 0.199120, 0.166570 , 0.138700, 0.115070, 0.095190, 0.078580 , 0.064740, 0.053280, 0.043790, 0.035960 , 0.029510, 0.024210, 0.019850, 0.016270 , 0.013330 } , { 0.011280, 0.013890, 0.017090, 0.021030 , 0.025870, 0.031800, 0.039060, 0.047940 , 0.058790, 0.071980, 0.087990, 0.107330 , 0.130550, 0.158220, 0.190850, 0.228870 , 0.272410, 0.321270, 0.374740, 0.431560 , 0.489960, 0.547870, 0.603180, 0.654080 , 0.699190, 0.737640, 0.769030, 0.793260 , 0.810410, 0.820620, 0.824010, 0.820620 , 0.810410, 0.793260, 0.769030, 0.737640 , 0.699190, 0.654080, 0.603180, 0.547870 , 0.489960, 0.431560, 0.374740, 0.321270 , 0.272410, 0.228870, 0.190850, 0.158220 , 0.130550, 0.107330, 0.087990, 0.071980 , 0.058790, 0.047940, 0.039060, 0.031800 , 0.025870, 0.021030, 0.017090, 0.013890 , 0.011280 } , { 0.009550, 0.011860, 0.014720, 0.018270 , 0.022660, 0.028100, 0.034820, 0.043120 , 0.053340, 0.065900, 0.081280, 0.100040 , 0.122800, 0.150180, 0.182800, 0.221170 , 0.265550, 0.315790, 0.371180, 0.430370 , 0.491430, 0.552030, 0.609840, 0.662860 , 0.709630, 0.749290, 0.781490, 0.806220 , 0.823650, 0.834000, 0.837430, 0.834000 , 0.823650, 0.806220, 0.781490, 0.749290 , 0.709630, 0.662860, 0.609840, 0.552030 , 0.491430, 0.430370, 0.371180, 0.315790 , 0.265550, 0.221170, 0.182800, 0.150180 , 0.122800, 0.100040, 0.081280, 0.065900 , 0.053340, 0.043120, 0.034820, 0.028100 , 0.022660, 0.018270, 0.014720, 0.011860 , 0.009550 } , { 0.008080, 0.010120, 0.012670, 0.015860 , 0.019840, 0.024820, 0.031030, 0.038760 , 0.048370, 0.060300, 0.075040, 0.093200 , 0.115430, 0.142450, 0.174980, 0.213610 , 0.258720, 0.310250, 0.367480, 0.429010 , 0.492690, 0.555950, 0.616210, 0.671280 , 0.719600, 0.760350, 0.793250, 0.818380 , 0.836020, 0.846460, 0.849920, 0.846460 , 0.836020, 0.818380, 0.793250, 0.760350 , 0.719600, 0.671280, 0.616210, 0.555950 , 0.492690, 0.429010, 0.367480, 0.310250 , 0.258720, 0.213610, 0.174980, 0.142450 , 0.115430, 0.093200, 0.075040, 0.060300 , 0.048370, 0.038760, 0.031030, 0.024820 , 0.019840, 0.015860, 0.012670, 0.010120 , 0.008080 } }; // More sampling precision with linear interpolation fPRFlo = -1.5; fPRFhi = 1.5; Float_t pad[kPRFbin]; Int_t sPRFbin = kPRFbin; Float_t sPRFwid = (fPRFhi - fPRFlo) / ((Float_t) sPRFbin); for (Int_t iPad = 0; iPad < sPRFbin; iPad++) { pad[iPad] = ((Float_t) iPad + 0.5) * sPRFwid + fPRFlo; } fPRFbin = 500; fPRFwid = (fPRFhi - fPRFlo) / ((Float_t) fPRFbin); fPRFpad = ((Int_t) (1.0 / fPRFwid)); if (fPRFsmp) delete [] fPRFsmp; fPRFsmp = new Float_t[kNplan*fPRFbin]; Int_t ipos1; Int_t ipos2; Float_t diff; for (Int_t iPla = 0; iPla < kNplan; iPla++) { for (Int_t iBin = 0; iBin < fPRFbin; iBin++) { Float_t bin = (((Float_t) iBin) + 0.5) * fPRFwid + fPRFlo; ipos1 = ipos2 = 0; diff = 0; do { diff = bin - pad[ipos2++]; } while ((diff > 0) && (ipos2 < kPRFbin)); if (ipos2 == kPRFbin) { fPRFsmp[iPla*fPRFbin+iBin] = prf[iPla][ipos2-1]; } else if (ipos2 == 1) { fPRFsmp[iPla*fPRFbin+iBin] = prf[iPla][ipos2-1]; } else { ipos2--; if (ipos2 >= kPRFbin) ipos2 = kPRFbin - 1; ipos1 = ipos2 - 1; fPRFsmp[iPla*fPRFbin+iBin] = prf[iPla][ipos2] + diff * (prf[iPla][ipos2] - prf[iPla][ipos1]) / sPRFwid; } } } } //_____________________________________________________________________________ void AliTRDparameter::FillLUT() { // // Create the LUT // const Int_t kNplan = AliTRDgeometry::kNplan; const Int_t kNlut = 128; fLUTbin = kNplan * kNlut; // The lookup table from Bogdan Float_t lut[kNplan][kNlut] = { { 0.0070, 0.0150, 0.0224, 0.0298, 0.0374, 0.0454, 0.0533, 0.0611, 0.0684, 0.0755, 0.0827, 0.0900, 0.0975, 0.1049, 0.1120, 0.1187, 0.1253, 0.1318, 0.1385, 0.1453, 0.1519, 0.1584, 0.1646, 0.1704, 0.1762, 0.1821, 0.1879, 0.1938, 0.1996, 0.2053, 0.2108, 0.2160, 0.2210, 0.2260, 0.2310, 0.2361, 0.2411, 0.2461, 0.2509, 0.2557, 0.2602, 0.2646, 0.2689, 0.2732, 0.2774, 0.2816, 0.2859, 0.2901, 0.2942, 0.2983, 0.3022, 0.3061, 0.3099, 0.3136, 0.3172, 0.3207, 0.3242, 0.3278, 0.3312, 0.3347, 0.3382, 0.3416, 0.3450, 0.3483, 0.3515, 0.3547, 0.3579, 0.3609, 0.3639, 0.3669, 0.3698, 0.3727, 0.3756, 0.3785, 0.3813, 0.3842, 0.3870, 0.3898, 0.3926, 0.3952, 0.3979, 0.4005, 0.4032, 0.4057, 0.4082, 0.4108, 0.4132, 0.4157, 0.4181, 0.4205, 0.4228, 0.4252, 0.4275, 0.4299, 0.4322, 0.4345, 0.4367, 0.4390, 0.4412, 0.4434, 0.4456, 0.4478, 0.4499, 0.4520, 0.4541, 0.4562, 0.4583, 0.4603, 0.4623, 0.4643, 0.4663, 0.4683, 0.4702, 0.4722, 0.4741, 0.4758, 0.4774, 0.4790, 0.4805, 0.4824, 0.4844, 0.4863, 0.4883, 0.4902, 0.4921, 0.4940, 0.4959, 0.4978 }, { 0.0072, 0.0156, 0.0235, 0.0313, 0.0394, 0.0478, 0.0561, 0.0642, 0.0718, 0.0792, 0.0868, 0.0947, 0.1025, 0.1101, 0.1172, 0.1241, 0.1309, 0.1378, 0.1449, 0.1518, 0.1586, 0.1650, 0.1710, 0.1770, 0.1830, 0.1891, 0.1952, 0.2011, 0.2070, 0.2125, 0.2177, 0.2229, 0.2280, 0.2332, 0.2383, 0.2435, 0.2484, 0.2533, 0.2581, 0.2627, 0.2670, 0.2714, 0.2757, 0.2799, 0.2842, 0.2884, 0.2927, 0.2968, 0.3008, 0.3048, 0.3086, 0.3123, 0.3159, 0.3195, 0.3231, 0.3266, 0.3301, 0.3335, 0.3370, 0.3404, 0.3438, 0.3471, 0.3504, 0.3536, 0.3567, 0.3598, 0.3628, 0.3657, 0.3686, 0.3715, 0.3744, 0.3772, 0.3800, 0.3828, 0.3856, 0.3884, 0.3911, 0.3938, 0.3965, 0.3991, 0.4016, 0.4042, 0.4067, 0.4092, 0.4116, 0.4140, 0.4164, 0.4187, 0.4211, 0.4234, 0.4257, 0.4280, 0.4302, 0.4325, 0.4347, 0.4369, 0.4391, 0.4413, 0.4434, 0.4456, 0.4477, 0.4497, 0.4518, 0.4538, 0.4558, 0.4578, 0.4598, 0.4618, 0.4637, 0.4656, 0.4675, 0.4694, 0.4713, 0.4732, 0.4750, 0.4766, 0.4781, 0.4797, 0.4813, 0.4832, 0.4851, 0.4870, 0.4888, 0.4906, 0.4925, 0.4942, 0.4960, 0.4978 }, { 0.0075, 0.0163, 0.0246, 0.0328, 0.0415, 0.0504, 0.0592, 0.0674, 0.0753, 0.0832, 0.0914, 0.0996, 0.1077, 0.1154, 0.1225, 0.1296, 0.1369, 0.1442, 0.1515, 0.1585, 0.1652, 0.1714, 0.1776, 0.1839, 0.1902, 0.1965, 0.2025, 0.2085, 0.2141, 0.2194, 0.2247, 0.2299, 0.2352, 0.2405, 0.2457, 0.2507, 0.2557, 0.2604, 0.2649, 0.2693, 0.2737, 0.2780, 0.2823, 0.2867, 0.2909, 0.2951, 0.2992, 0.3033, 0.3072, 0.3110, 0.3146, 0.3182, 0.3218, 0.3253, 0.3288, 0.3323, 0.3357, 0.3392, 0.3426, 0.3459, 0.3492, 0.3524, 0.3555, 0.3586, 0.3616, 0.3645, 0.3674, 0.3703, 0.3731, 0.3759, 0.3787, 0.3815, 0.3843, 0.3870, 0.3897, 0.3925, 0.3950, 0.3976, 0.4002, 0.4027, 0.4052, 0.4076, 0.4101, 0.4124, 0.4148, 0.4171, 0.4194, 0.4217, 0.4239, 0.4262, 0.4284, 0.4306, 0.4328, 0.4350, 0.4371, 0.4393, 0.4414, 0.4435, 0.4455, 0.4476, 0.4496, 0.4516, 0.4536, 0.4555, 0.4575, 0.4594, 0.4613, 0.4632, 0.4650, 0.4669, 0.4687, 0.4705, 0.4723, 0.4741, 0.4758, 0.4773, 0.4789, 0.4804, 0.4821, 0.4839, 0.4857, 0.4875, 0.4893, 0.4910, 0.4928, 0.4945, 0.4961, 0.4978 }, { 0.0078, 0.0171, 0.0258, 0.0345, 0.0438, 0.0532, 0.0624, 0.0708, 0.0791, 0.0875, 0.0962, 0.1048, 0.1130, 0.1206, 0.1281, 0.1356, 0.1432, 0.1508, 0.1582, 0.1651, 0.1716, 0.1780, 0.1845, 0.1910, 0.1975, 0.2038, 0.2099, 0.2155, 0.2210, 0.2263, 0.2317, 0.2371, 0.2425, 0.2477, 0.2528, 0.2578, 0.2626, 0.2671, 0.2715, 0.2759, 0.2803, 0.2846, 0.2890, 0.2933, 0.2975, 0.3016, 0.3056, 0.3095, 0.3132, 0.3168, 0.3204, 0.3239, 0.3274, 0.3309, 0.3344, 0.3378, 0.3412, 0.3446, 0.3479, 0.3511, 0.3543, 0.3574, 0.3603, 0.3633, 0.3662, 0.3690, 0.3718, 0.3747, 0.3774, 0.3802, 0.3829, 0.3857, 0.3883, 0.3910, 0.3936, 0.3962, 0.3987, 0.4012, 0.4037, 0.4061, 0.4085, 0.4109, 0.4132, 0.4155, 0.4177, 0.4200, 0.4222, 0.4244, 0.4266, 0.4288, 0.4309, 0.4331, 0.4352, 0.4373, 0.4394, 0.4414, 0.4435, 0.4455, 0.4475, 0.4494, 0.4514, 0.4533, 0.4552, 0.4571, 0.4590, 0.4608, 0.4626, 0.4645, 0.4662, 0.4680, 0.4698, 0.4715, 0.4733, 0.4750, 0.4766, 0.4781, 0.4796, 0.4812, 0.4829, 0.4846, 0.4863, 0.4880, 0.4897, 0.4914, 0.4930, 0.4946, 0.4963, 0.4979 }, { 0.0081, 0.0178, 0.0270, 0.0364, 0.0463, 0.0562, 0.0656, 0.0744, 0.0831, 0.0921, 0.1013, 0.1102, 0.1183, 0.1261, 0.1339, 0.1419, 0.1499, 0.1576, 0.1648, 0.1715, 0.1782, 0.1849, 0.1917, 0.1984, 0.2048, 0.2110, 0.2167, 0.2223, 0.2278, 0.2333, 0.2389, 0.2444, 0.2497, 0.2548, 0.2598, 0.2645, 0.2691, 0.2735, 0.2780, 0.2824, 0.2868, 0.2912, 0.2955, 0.2997, 0.3038, 0.3078, 0.3116, 0.3152, 0.3188, 0.3224, 0.3259, 0.3294, 0.3329, 0.3364, 0.3398, 0.3432, 0.3465, 0.3497, 0.3529, 0.3561, 0.3591, 0.3620, 0.3649, 0.3677, 0.3705, 0.3733, 0.3761, 0.3788, 0.3816, 0.3843, 0.3869, 0.3896, 0.3922, 0.3948, 0.3973, 0.3998, 0.4022, 0.4047, 0.4070, 0.4094, 0.4117, 0.4139, 0.4162, 0.4184, 0.4206, 0.4227, 0.4249, 0.4270, 0.4291, 0.4313, 0.4334, 0.4354, 0.4375, 0.4395, 0.4415, 0.4435, 0.4455, 0.4474, 0.4493, 0.4512, 0.4531, 0.4550, 0.4568, 0.4586, 0.4604, 0.4622, 0.4639, 0.4657, 0.4674, 0.4691, 0.4708, 0.4725, 0.4742, 0.4758, 0.4773, 0.4788, 0.4803, 0.4819, 0.4836, 0.4852, 0.4869, 0.4885, 0.4901, 0.4917, 0.4933, 0.4948, 0.4964, 0.4979 }, { 0.0085, 0.0189, 0.0288, 0.0389, 0.0497, 0.0603, 0.0699, 0.0792, 0.0887, 0.0985, 0.1082, 0.1170, 0.1253, 0.1336, 0.1421, 0.1505, 0.1587, 0.1662, 0.1733, 0.1803, 0.1874, 0.1945, 0.2014, 0.2081, 0.2143, 0.2201, 0.2259, 0.2316, 0.2374, 0.2431, 0.2487, 0.2541, 0.2593, 0.2642, 0.2689, 0.2735, 0.2781, 0.2826, 0.2872, 0.2917, 0.2961, 0.3003, 0.3045, 0.3086, 0.3125, 0.3162, 0.3198, 0.3235, 0.3270, 0.3306, 0.3342, 0.3377, 0.3411, 0.3446, 0.3479, 0.3511, 0.3543, 0.3575, 0.3605, 0.3634, 0.3663, 0.3691, 0.3720, 0.3748, 0.3775, 0.3803, 0.3830, 0.3857, 0.3884, 0.3911, 0.3937, 0.3962, 0.3987, 0.4012, 0.4036, 0.4060, 0.4084, 0.4107, 0.4129, 0.4152, 0.4174, 0.4196, 0.4218, 0.4239, 0.4261, 0.4282, 0.4303, 0.4324, 0.4344, 0.4365, 0.4385, 0.4405, 0.4425, 0.4445, 0.4464, 0.4483, 0.4502, 0.4521, 0.4539, 0.4558, 0.4576, 0.4593, 0.4611, 0.4629, 0.4646, 0.4663, 0.4680, 0.4697, 0.4714, 0.4730, 0.4747, 0.4759, 0.4769, 0.4780, 0.4790, 0.4800, 0.4811, 0.4827, 0.4843, 0.4859, 0.4874, 0.4889, 0.4905, 0.4920, 0.4935, 0.4950, 0.4965, 0.4979 } }; if (fLUT) delete [] fLUT; fLUT = new Float_t[fLUTbin]; for (Int_t iplan = 0; iplan < kNplan; iplan++) { for (Int_t ilut = 0; ilut < kNlut; ilut++) { fLUT[iplan*kNlut+ilut] = lut[iplan][ilut]; } } } //_____________________________________________________________________________ void AliTRDparameter::SetTiltingAngle(Float_t v) { // // Set the tilting angle for the readout pads // fTiltingAngle = TMath::Tan(TMath::Pi()/180.0 * v); } //_____________________________________________________________________________ Float_t AliTRDparameter::GetTiltingAngle() const { // // Get the tilting angle for the readout pads // return 180.0 / TMath::Pi() * TMath::ATan(fTiltingAngle); } //_____________________________________________________________________________ Float_t AliTRDparameter::GetDiffusionL(Float_t vd, Float_t b) { // // Returns the longitudinal diffusion coefficient for a given drift // velocity and a B-field for Xe/CO2 (15%). // The values are according to a GARFIELD simulation. // const Int_t kNb = 5; Float_t p0[kNb] = { 0.007440, 0.007493, 0.007513, 0.007672, 0.007831 }; Float_t p1[kNb] = { 0.019252, 0.018912, 0.018636, 0.018012, 0.017343 }; Float_t p2[kNb] = { -0.005042, -0.004926, -0.004867, -0.004650, -0.004424 }; Float_t p3[kNb] = { 0.000195, 0.000189, 0.000195, 0.000182, 0.000169 }; Int_t ib = ((Int_t) (10 * (b - 0.15))); ib = TMath::Max( 0,ib); ib = TMath::Min(kNb,ib); Float_t diff = p0[ib] + p1[ib] * vd + p2[ib] * vd*vd + p3[ib] * vd*vd*vd; return diff; } //_____________________________________________________________________________ Float_t AliTRDparameter::GetDiffusionT(Float_t vd, Float_t b) { // // Returns the transverse diffusion coefficient for a given drift // velocity and a B-field for Xe/CO2 (15%). // The values are according to a GARFIELD simulation. // const Int_t kNb = 5; Float_t p0[kNb] = { 0.009550, 0.009599, 0.009674, 0.009757, 0.009850 }; Float_t p1[kNb] = { 0.006667, 0.006539, 0.006359, 0.006153, 0.005925 }; Float_t p2[kNb] = { -0.000853, -0.000798, -0.000721, -0.000635, -0.000541 }; Float_t p3[kNb] = { 0.000131, 0.000122, 0.000111, 0.000098, 0.000085 }; Int_t ib = ((Int_t) (10 * (b - 0.15))); ib = TMath::Max( 0,ib); ib = TMath::Min(kNb,ib); Float_t diff = p0[ib] + p1[ib] * vd + p2[ib] * vd*vd + p3[ib] * vd*vd*vd; return diff; } //_____________________________________________________________________________ Float_t AliTRDparameter::GetOmegaTau(Float_t vd, Float_t b) { // // Returns omega*tau (tan(Lorentz-angle)) for a given drift velocity // and a B-field for Xe/CO2 (15%). // The values are according to a GARFIELD simulation. // const Int_t kNb = 5; Float_t p0[kNb] = { 0.004810, 0.007412, 0.010252, 0.013409, 0.016888 }; Float_t p1[kNb] = { 0.054875, 0.081534, 0.107333, 0.131983, 0.155455 }; Float_t p2[kNb] = { -0.008682, -0.012896, -0.016987, -0.020880, -0.024623 }; Float_t p3[kNb] = { 0.000155, 0.000238, 0.000330, 0.000428, 0.000541 }; Int_t ib = ((Int_t) (10 * (b - 0.15))); ib = TMath::Max( 0,ib); ib = TMath::Min(kNb,ib); Float_t alphaL = p0[ib] + p1[ib] * vd + p2[ib] * vd*vd + p3[ib] * vd*vd*vd; return TMath::Tan(alphaL); } //_____________________________________________________________________________ Double_t AliTRDparameter::LUTposition(Int_t iplane, Double_t ampL , Double_t ampC , Double_t ampR) const { // // Calculates the cluster position using the lookup table. // Method provided by Bogdan Vulpescu. // const Int_t kNplan = AliTRDgeometry::kNplan; const Int_t kNlut = 128; Double_t pos; Double_t x = 0.0; Double_t xmin; Double_t xmax; Double_t xwid; Int_t side = 0; Int_t ix; Double_t xMin[kNplan] = { 0.006492, 0.006377, 0.006258, 0.006144, 0.006030, 0.005980 }; Double_t xMax[kNplan] = { 0.960351, 0.965870, 0.970445, 0.974352, 0.977667, 0.996101 }; if (ampL > ampR) { x = (ampL - ampR) / ampC; side = -1; } else if (ampL < ampR) { x = (ampR - ampL) / ampC; side = +1; } if (ampL != ampR) { xmin = xMin[iplane] + 0.000005; xmax = xMax[iplane] - 0.000005; xwid = (xmax - xmin) / 127.0; if (x < xmin) { pos = 0.0000; } else if (x > xmax) { pos = side * 0.5000; } else { ix = (Int_t) ((x - xmin) / xwid); pos = side * fLUT[iplane*kNlut+ix]; } } else { pos = 0.0; } return pos; }