+/**************************************************************************
+ * 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. *
+ **************************************************************************/
+
+/*
+$Log$
+*/
+
+///////////////////////////////////////////////////////////////////////////////
+// //
+// TRD parameter class //
+// //
+///////////////////////////////////////////////////////////////////////////////
+
+#include "AliRun.h"
+#include "AliMagF.h"
+
+#include "AliTRD.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;
+ 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();
+
+ Init();
+
+}
+
+
+//_____________________________________________________________________________
+AliTRDparameter::AliTRDparameter(const AliTRDparameter &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).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);
+
+ // 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 = 1000.; // 1V input range
+ fADCthreshold = 1;
+
+ // The drift velocity (cm / mus)
+ fDriftVelocity = 1.5;
+
+ // Diffusion on
+ fDiffusionOn = 1;
+
+ // E x B effects
+ fExBOn = 0;
+
+ // 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 = 0;
+
+ // 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(5.0);
+
+ // The magnetic field strength in Tesla
+ fField = 0.2 * gAlice->Field()->Factor();
+
+ //
+ // ----------------------------------------------------------------------------
+ // 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(const Int_t p, const Int_t c, const 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 }
+ , { 14, 16, 12, 16, 14 }
+ , { 13, 16, 12, 16, 13 } };
+
+ 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,icham);
+ }
+ fRow0[iplan][icham][isect] = row0;
+
+ }
+ }
+ }
+
+}
+
+//_____________________________________________________________________________
+void AliTRDparameter::SetColPadSize(const Int_t p, const 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(const 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 <nbin>.
+ //
+
+ 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)
+{
+ //
+ // 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)
+{
+ //
+ // 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)
+{
+ //
+ // 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)
+{
+ //
+ // 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--;
+ 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*kNplan+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 TMath::ATan(180.0/TMath::Pi() * fTiltingAngle);
+
+}
+
+//_____________________________________________________________________________
+Float_t AliTRDparameter::GetDiffusionL(Float_t vd, Float_t b)
+{
+ //
+ // Returns the longitudinal diffusion coefficient for a given drift
+ // velocity <vd> and a B-field <b> 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 <vd> and a B-field <b> 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 <vd>
+ // and a B-field <b> 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)
+{
+ //
+ // Calculates the cluster position using the lookup table.
+ // Method provided by Bogdan Vulpescu.
+ //
+
+ const Int_t kNplan = AliTRDgeometry::kNplan;
+
+ 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*kNplan+ix];
+ }
+
+ }
+ else {
+
+ pos = 0.0;
+
+ }
+
+ return pos;
+
+}
git://git.uio.no / u / mrichter / AliRoot.git / commitdiff