#include <TH1.h>
#include <TRandom.h>
#include <TMath.h>
#include <TVirtualMC.h>
#include <TVirtualMCStack.h>
#include "AliModule.h"
#include "AliTRDsimTR.h"
ClassImp(AliTRDsimTR)
AliTRDsimTR::AliTRDsimTR()
:TObject()
,fNFoilsDim(0)
,fNFoils(0)
,fNFoilsUp(0)
,fFoilThick(0)
,fGapThick(0)
,fFoilDens(0)
,fGapDens(0)
,fFoilOmega(0)
,fGapOmega()
,fFoilZ(0)
,fGapZ(0)
,fFoilA(0)
,fGapA(0)
,fTemp(0)
,fSpNBins(0)
,fSpRange(0)
,fSpBinWidth(0)
,fSpLower(0)
,fSpUpper(0)
,fSigma(0)
,fSpectrum(0)
{
Init();
}
AliTRDsimTR::AliTRDsimTR(AliModule *mod, Int_t foil, Int_t gap)
:TObject()
,fNFoilsDim(0)
,fNFoils(0)
,fNFoilsUp(0)
,fFoilThick(0)
,fGapThick(0)
,fFoilDens(0)
,fGapDens(0)
,fFoilOmega(0)
,fGapOmega()
,fFoilZ(0)
,fGapZ(0)
,fFoilA(0)
,fGapA(0)
,fTemp(0)
,fSpNBins(0)
,fSpRange(0)
,fSpBinWidth(0)
,fSpLower(0)
,fSpUpper(0)
,fSigma(0)
,fSpectrum(0)
{
Float_t aFoil;
Float_t zFoil;
Float_t rhoFoil;
Float_t aGap;
Float_t zGap;
Float_t rhoGap;
Float_t rad;
Float_t abs;
Char_t name[21];
Init();
mod->AliGetMaterial(foil,name,aFoil,zFoil,rhoFoil,rad,abs);
mod->AliGetMaterial(gap ,name,aGap ,zGap ,rhoGap ,rad,abs);
fFoilDens = rhoFoil;
fFoilA = aFoil;
fFoilZ = zFoil;
fFoilOmega = Omega(fFoilDens,fFoilZ,fFoilA);
fGapDens = rhoGap;
fGapA = aGap;
fGapZ = zGap;
fGapOmega = Omega(fGapDens ,fGapZ ,fGapA );
}
AliTRDsimTR::AliTRDsimTR(const AliTRDsimTR &s)
:TObject(s)
,fNFoilsDim(s.fNFoilsDim)
,fNFoils(0)
,fNFoilsUp(0)
,fFoilThick(s.fFoilThick)
,fGapThick(s.fGapThick)
,fFoilDens(s.fFoilDens)
,fGapDens(s.fGapDens)
,fFoilOmega(s.fFoilOmega)
,fGapOmega(s.fGapOmega)
,fFoilZ(s.fFoilZ)
,fGapZ(s.fGapZ)
,fFoilA(s.fFoilA)
,fGapA(s.fGapA)
,fTemp(s.fTemp)
,fSpNBins(s.fSpNBins)
,fSpRange(s.fSpRange)
,fSpBinWidth(s.fSpBinWidth)
,fSpLower(s.fSpLower)
,fSpUpper(s.fSpUpper)
,fSigma(0)
,fSpectrum(0)
{
fNFoils = new Int_t[fNFoilsDim];
for (Int_t iFoil = 0; iFoil < fNFoilsDim; iFoil++) {
fNFoils[iFoil] = ((AliTRDsimTR &) s).fNFoils[iFoil];
}
fNFoilsUp = new Double_t[fNFoilsDim];
for (Int_t iFoil = 0; iFoil < fNFoilsDim; iFoil++) {
fNFoilsUp[iFoil] = ((AliTRDsimTR &) s).fNFoilsUp[iFoil];
}
fSigma = new Double_t[fSpNBins];
for (Int_t iBin = 0; iBin < fSpNBins; iBin++) {
fSigma[iBin] = ((AliTRDsimTR &) s).fSigma[iBin];
}
}
AliTRDsimTR::~AliTRDsimTR()
{
if (fSigma) {
delete [] fSigma;
fSigma = 0;
}
if (fNFoils) {
delete [] fNFoils;
fNFoils = 0;
}
if (fNFoilsUp) {
delete [] fNFoilsUp;
fNFoilsUp = 0;
}
if (fSpectrum) {
delete fSpectrum;
fSpectrum = 0;
}
}
AliTRDsimTR &AliTRDsimTR::operator=(const AliTRDsimTR &s)
{
if (this != &s) ((AliTRDsimTR &) s).Copy(*this);
this->Init();
return *this;
}
void AliTRDsimTR::Copy(TObject &s) const
{
((AliTRDsimTR &) s).fFoilThick = fFoilThick;
((AliTRDsimTR &) s).fFoilDens = fFoilDens;
((AliTRDsimTR &) s).fFoilOmega = fFoilOmega;
((AliTRDsimTR &) s).fFoilZ = fFoilZ;
((AliTRDsimTR &) s).fFoilA = fFoilA;
((AliTRDsimTR &) s).fGapThick = fGapThick;
((AliTRDsimTR &) s).fGapDens = fGapDens;
((AliTRDsimTR &) s).fGapOmega = fGapOmega;
((AliTRDsimTR &) s).fGapZ = fGapZ;
((AliTRDsimTR &) s).fGapA = fGapA;
((AliTRDsimTR &) s).fTemp = fTemp;
((AliTRDsimTR &) s).fSpNBins = fSpNBins;
((AliTRDsimTR &) s).fSpRange = fSpRange;
((AliTRDsimTR &) s).fSpBinWidth = fSpBinWidth;
((AliTRDsimTR &) s).fSpLower = fSpLower;
((AliTRDsimTR &) s).fSpUpper = fSpUpper;
if (((AliTRDsimTR &) s).fNFoils) {
delete [] ((AliTRDsimTR &) s).fNFoils;
}
((AliTRDsimTR &) s).fNFoils = new Int_t[fNFoilsDim];
for (Int_t iFoil = 0; iFoil < fNFoilsDim; iFoil++) {
((AliTRDsimTR &) s).fNFoils[iFoil] = fNFoils[iFoil];
}
if (((AliTRDsimTR &) s).fNFoilsUp) {
delete [] ((AliTRDsimTR &) s).fNFoilsUp;
}
((AliTRDsimTR &) s).fNFoilsUp = new Double_t[fNFoilsDim];
for (Int_t iFoil = 0; iFoil < fNFoilsDim; iFoil++) {
((AliTRDsimTR &) s).fNFoilsUp[iFoil] = fNFoilsUp[iFoil];
}
if (((AliTRDsimTR &) s).fSigma) {
delete [] ((AliTRDsimTR &) s).fSigma;
}
((AliTRDsimTR &) s).fSigma = new Double_t[fSpNBins];
for (Int_t iBin = 0; iBin < fSpNBins; iBin++) {
((AliTRDsimTR &) s).fSigma[iBin] = fSigma[iBin];
}
}
void AliTRDsimTR::Init()
{
fNFoilsDim = 7;
if (fNFoils) {
delete [] fNFoils;
}
fNFoils = new Int_t[fNFoilsDim];
fNFoils[0] = 170;
fNFoils[1] = 225;
fNFoils[2] = 275;
fNFoils[3] = 305;
fNFoils[4] = 325;
fNFoils[5] = 340;
fNFoils[6] = 350;
if (fNFoilsUp) {
delete [] fNFoilsUp;
}
fNFoilsUp = new Double_t[fNFoilsDim];
fNFoilsUp[0] = 1.25;
fNFoilsUp[1] = 1.75;
fNFoilsUp[2] = 2.50;
fNFoilsUp[3] = 3.50;
fNFoilsUp[4] = 4.50;
fNFoilsUp[5] = 5.50;
fNFoilsUp[6] = 10000.0;
fFoilThick = 0.0013;
fFoilDens = 0.92;
fFoilZ = 5.28571;
fFoilA = 10.4286;
fFoilOmega = Omega(fFoilDens,fFoilZ,fFoilA);
fGapThick = 0.0060;
fGapDens = 0.00125;
fGapZ = 7.0;
fGapA = 14.00674;
fGapOmega = Omega(fGapDens ,fGapZ ,fGapA );
fTemp = 293.16;
fSpNBins = 200;
fSpRange = 100;
fSpBinWidth = fSpRange / fSpNBins;
fSpLower = 1.0 - 0.5 * fSpBinWidth;
fSpUpper = fSpLower + fSpRange;
if (fSpectrum) delete fSpectrum;
fSpectrum = new TH1D("TRspectrum","TR spectrum",fSpNBins,fSpLower,fSpUpper);
fSpectrum->SetDirectory(0);
SetSigma();
}
Int_t AliTRDsimTR::CreatePhotons(Int_t pdg, Float_t p
, Int_t &nPhoton, Float_t *ePhoton)
{
const Int_t kPdgEle = 11;
const Int_t kPdgMuon = 13;
const Int_t kPdgPion = 211;
const Int_t kPdgKaon = 321;
Float_t mass = 0;
switch (TMath::Abs(pdg)) {
case kPdgEle:
mass = 5.11e-4;
break;
case kPdgMuon:
mass = 0.10566;
break;
case kPdgPion:
mass = 0.13957;
break;
case kPdgKaon:
mass = 0.4937;
break;
default:
return 0;
break;
};
return TrPhotons(p, mass, nPhoton, ePhoton);
}
Int_t AliTRDsimTR::TrPhotons(Float_t p, Float_t mass
, Int_t &nPhoton, Float_t *ePhoton)
{
const Double_t kAlpha = 0.0072973;
const Int_t kSumMax = 30;
Double_t tau = fGapThick / fFoilThick;
Double_t gamma = TMath::Sqrt(p*p + mass*mass) / mass;
Int_t foils = SelectNFoils(p);
fSpectrum->Reset();
Double_t csi1;
Double_t csi2;
Double_t rho1;
Double_t rho2;
Double_t sigma;
Double_t sum;
Double_t nEqu;
Double_t thetaN;
Double_t aux;
Double_t energyeV;
Double_t energykeV;
for (Int_t iBin = 1; iBin <= fSpNBins; iBin++) {
energykeV = fSpectrum->GetBinCenter(iBin);
energyeV = energykeV * 1.0e3;
sigma = Sigma(energykeV);
csi1 = fFoilOmega / energyeV;
csi2 = fGapOmega / energyeV;
rho1 = 2.5 * energyeV * fFoilThick * 1.0e4
* (1.0 / (gamma*gamma) + csi1*csi1);
rho2 = 2.5 * energyeV * fFoilThick * 1.0e4
* (1.0 / (gamma*gamma) + csi2 *csi2);
sum = 0.0;
for (Int_t n = 1; n <= kSumMax; n++) {
thetaN = (TMath::Pi() * 2.0 * n - (rho1 + tau * rho2)) / (1.0 + tau);
if (thetaN < 0.0) {
thetaN = 0.0;
}
aux = 1.0 / (rho1 + thetaN) - 1.0 / (rho2 + thetaN);
sum += thetaN * (aux*aux) * (1.0 - TMath::Cos(rho1 + thetaN));
}
nEqu = (1.0 - TMath::Exp(-foils * sigma)) / (1.0 - TMath::Exp(-sigma));
fSpectrum->SetBinContent(iBin,4.0 * kAlpha * nEqu * sum / (energykeV * (1.0 + tau)));
}
Float_t nTr = fSpBinWidth * fSpectrum->Integral();
Int_t nPhCand = gRandom->Poisson(nTr);
TVirtualMCStack *stack = TVirtualMC::GetMC()->GetStack();
Int_t track = stack->GetCurrentTrackNumber();
Double_t px, py, pz, ptot;
TVirtualMC::GetMC()->TrackMomentum(px,py,pz,ptot);
ptot = TMath::Sqrt(px*px+py*py+pz*pz);
px /= ptot;
py /= ptot;
pz /= ptot;
Double_t x;
Double_t y;
Double_t z;
TVirtualMC::GetMC()->TrackPosition(x,y,z);
Double_t t = TVirtualMC::GetMC()->TrackTime();
nPhoton = 0;
for (Int_t iPhoton = 0; iPhoton < nPhCand; iPhoton++) {
Double_t e = fSpectrum->GetRandom();
if (e > 15.0) {
e *= 1.0e-6;
Int_t phtrack;
stack->PushTrack(1
,track
,22
,px*e
,py*e
,pz*e
,e
,x,y,z,t
,0.0,0.0,0.0
,kPFeedBackPhoton
,phtrack
,1.0
,1);
}
else {
ePhoton[nPhoton++] = e;
}
}
return 1;
}
void AliTRDsimTR::SetSigma()
{
if (fSigma) {
delete [] fSigma;
}
fSigma = new Double_t[fSpNBins];
for (Int_t iBin = 0; iBin < fSpNBins; iBin++) {
Double_t energykeV = iBin * fSpBinWidth + 1.0;
fSigma[iBin] = Sigma(energykeV);
}
}
Double_t AliTRDsimTR::Sigma(Double_t energykeV)
{
Double_t energyMeV = energykeV * 0.001;
if (energyMeV >= 0.001) {
return(GetMuPo(energyMeV) * fFoilDens * fFoilThick +
GetMuAi(energyMeV) * fGapDens * fGapThick * GetTemp());
}
else {
return 1.0e6;
}
}
Double_t AliTRDsimTR::GetMuPo(Double_t energyMeV)
{
const Int_t kN = 36;
Double_t mu[kN] = { 1.894E+03, 5.999E+02, 2.593E+02
, 7.743E+01, 3.242E+01, 1.643E+01
, 9.432E+00, 3.975E+00, 2.088E+00
, 7.452E-01, 4.315E-01, 2.706E-01
, 2.275E-01, 2.084E-01, 1.970E-01
, 1.823E-01, 1.719E-01, 1.534E-01
, 1.402E-01, 1.217E-01, 1.089E-01
, 9.947E-02, 9.198E-02, 8.078E-02
, 7.262E-02, 6.495E-02, 5.910E-02
, 5.064E-02, 4.045E-02, 3.444E-02
, 3.045E-02, 2.760E-02, 2.383E-02
, 2.145E-02, 1.819E-02, 1.658E-02 };
Double_t en[kN] = { 1.000E-03, 1.500E-03, 2.000E-03
, 3.000E-03, 4.000E-03, 5.000E-03
, 6.000E-03, 8.000E-03, 1.000E-02
, 1.500E-02, 2.000E-02, 3.000E-02
, 4.000E-02, 5.000E-02, 6.000E-02
, 8.000E-02, 1.000E-01, 1.500E-01
, 2.000E-01, 3.000E-01, 4.000E-01
, 5.000E-01, 6.000E-01, 8.000E-01
, 1.000E+00, 1.250E+00, 1.500E+00
, 2.000E+00, 3.000E+00, 4.000E+00
, 5.000E+00, 6.000E+00, 8.000E+00
, 1.000E+01, 1.500E+01, 2.000E+01 };
return Interpolate(energyMeV,en,mu,kN);
}
Double_t AliTRDsimTR::GetMuCO(Double_t energyMeV)
{
const Int_t kN = 36;
Double_t mu[kN] = { 0.39383E+04, 0.13166E+04, 0.58750E+03
, 0.18240E+03, 0.77996E+02, 0.40024E+02
, 0.23116E+02, 0.96997E+01, 0.49726E+01
, 0.15543E+01, 0.74915E+00, 0.34442E+00
, 0.24440E+00, 0.20589E+00, 0.18632E+00
, 0.16578E+00, 0.15394E+00, 0.13558E+00
, 0.12336E+00, 0.10678E+00, 0.95510E-01
, 0.87165E-01, 0.80587E-01, 0.70769E-01
, 0.63626E-01, 0.56894E-01, 0.51782E-01
, 0.44499E-01, 0.35839E-01, 0.30825E-01
, 0.27555E-01, 0.25269E-01, 0.22311E-01
, 0.20516E-01, 0.18184E-01, 0.17152E-01 };
Double_t en[kN] = { 0.10000E-02, 0.15000E-02, 0.20000E-02
, 0.30000E-02, 0.40000E-02, 0.50000E-02
, 0.60000E-02, 0.80000E-02, 0.10000E-01
, 0.15000E-01, 0.20000E-01, 0.30000E-01
, 0.40000E-01, 0.50000E-01, 0.60000E-01
, 0.80000E-01, 0.10000E+00, 0.15000E+00
, 0.20000E+00, 0.30000E+00, 0.40000E+00
, 0.50000E+00, 0.60000E+00, 0.80000E+00
, 0.10000E+01, 0.12500E+01, 0.15000E+01
, 0.20000E+01, 0.30000E+01, 0.40000E+01
, 0.50000E+01, 0.60000E+01, 0.80000E+01
, 0.10000E+02, 0.15000E+02, 0.20000E+02 };
return Interpolate(energyMeV,en,mu,kN);
}
Double_t AliTRDsimTR::GetMuXe(Double_t energyMeV)
{
const Int_t kN = 48;
Double_t mu[kN] = { 9.413E+03, 8.151E+03, 7.035E+03
, 7.338E+03, 4.085E+03, 2.088E+03
, 7.780E+02, 3.787E+02, 2.408E+02
, 6.941E+02, 6.392E+02, 6.044E+02
, 8.181E+02, 7.579E+02, 6.991E+02
, 8.064E+02, 6.376E+02, 3.032E+02
, 1.690E+02, 5.743E+01, 2.652E+01
, 8.930E+00, 6.129E+00, 3.316E+01
, 2.270E+01, 1.272E+01, 7.825E+00
, 3.633E+00, 2.011E+00, 7.202E-01
, 3.760E-01, 1.797E-01, 1.223E-01
, 9.699E-02, 8.281E-02, 6.696E-02
, 5.785E-02, 5.054E-02, 4.594E-02
, 4.078E-02, 3.681E-02, 3.577E-02
, 3.583E-02, 3.634E-02, 3.797E-02
, 3.987E-02, 4.445E-02, 4.815E-02 };
Double_t en[kN] = { 1.00000E-03, 1.07191E-03, 1.14900E-03
, 1.14900E-03, 1.50000E-03, 2.00000E-03
, 3.00000E-03, 4.00000E-03, 4.78220E-03
, 4.78220E-03, 5.00000E-03, 5.10370E-03
, 5.10370E-03, 5.27536E-03, 5.45280E-03
, 5.45280E-03, 6.00000E-03, 8.00000E-03
, 1.00000E-02, 1.50000E-02, 2.00000E-02
, 3.00000E-02, 3.45614E-02, 3.45614E-02
, 4.00000E-02, 5.00000E-02, 6.00000E-02
, 8.00000E-02, 1.00000E-01, 1.50000E-01
, 2.00000E-01, 3.00000E-01, 4.00000E-01
, 5.00000E-01, 6.00000E-01, 8.00000E-01
, 1.00000E+00, 1.25000E+00, 1.50000E+00
, 2.00000E+00, 3.00000E+00, 4.00000E+00
, 5.00000E+00, 6.00000E+00, 8.00000E+00
, 1.00000E+01, 1.50000E+01, 2.00000E+01 };
return Interpolate(energyMeV,en,mu,kN);
}
Double_t AliTRDsimTR::GetMuAr(Double_t energyMeV)
{
const Int_t kN = 38;
Double_t mu[kN] = { 3.184E+03, 1.105E+03, 5.120E+02
, 1.703E+02, 1.424E+02, 1.275E+03
, 7.572E+02, 4.225E+02, 2.593E+02
, 1.180E+02, 6.316E+01, 1.983E+01
, 8.629E+00, 2.697E+00, 1.228E+00
, 7.012E-01, 4.664E-01, 2.760E-01
, 2.043E-01, 1.427E-01, 1.205E-01
, 9.953E-02, 8.776E-02, 7.958E-02
, 7.335E-02, 6.419E-02, 5.762E-02
, 5.150E-02, 4.695E-02, 4.074E-02
, 3.384E-02, 3.019E-02, 2.802E-02
, 2.667E-02, 2.517E-02, 2.451E-02
, 2.418E-02, 2.453E-02 };
Double_t en[kN] = { 1.00000E-03, 1.50000E-03, 2.00000E-03
, 3.00000E-03, 3.20290E-03, 3.20290E-03
, 4.00000E-03, 5.00000E-03, 6.00000E-03
, 8.00000E-03, 1.00000E-02, 1.50000E-02
, 2.00000E-02, 3.00000E-02, 4.00000E-02
, 5.00000E-02, 6.00000E-02, 8.00000E-02
, 1.00000E-01, 1.50000E-01, 2.00000E-01
, 3.00000E-01, 4.00000E-01, 5.00000E-01
, 6.00000E-01, 8.00000E-01, 1.00000E+00
, 1.25000E+00, 1.50000E+00, 2.00000E+00
, 3.00000E+00, 4.00000E+00, 5.00000E+00
, 6.00000E+00, 8.00000E+00, 1.00000E+01
, 1.50000E+01, 2.00000E+01 };
return Interpolate(energyMeV,en,mu,kN);
}
Double_t AliTRDsimTR::GetMuMy(Double_t energyMeV)
{
const Int_t kN = 36;
Double_t mu[kN] = { 2.911E+03, 9.536E+02, 4.206E+02
, 1.288E+02, 5.466E+01, 2.792E+01
, 1.608E+01, 6.750E+00, 3.481E+00
, 1.132E+00, 5.798E-01, 3.009E-01
, 2.304E-01, 2.020E-01, 1.868E-01
, 1.695E-01, 1.586E-01, 1.406E-01
, 1.282E-01, 1.111E-01, 9.947E-02
, 9.079E-02, 8.395E-02, 7.372E-02
, 6.628E-02, 5.927E-02, 5.395E-02
, 4.630E-02, 3.715E-02, 3.181E-02
, 2.829E-02, 2.582E-02, 2.257E-02
, 2.057E-02, 1.789E-02, 1.664E-02 };
Double_t en[kN] = { 1.00000E-03, 1.50000E-03, 2.00000E-03
, 3.00000E-03, 4.00000E-03, 5.00000E-03
, 6.00000E-03, 8.00000E-03, 1.00000E-02
, 1.50000E-02, 2.00000E-02, 3.00000E-02
, 4.00000E-02, 5.00000E-02, 6.00000E-02
, 8.00000E-02, 1.00000E-01, 1.50000E-01
, 2.00000E-01, 3.00000E-01, 4.00000E-01
, 5.00000E-01, 6.00000E-01, 8.00000E-01
, 1.00000E+00, 1.25000E+00, 1.50000E+00
, 2.00000E+00, 3.00000E+00, 4.00000E+00
, 5.00000E+00, 6.00000E+00, 8.00000E+00
, 1.00000E+01, 1.50000E+01, 2.00000E+01 };
return Interpolate(energyMeV,en,mu,kN);
}
Double_t AliTRDsimTR::GetMuN2(Double_t energyMeV)
{
const Int_t kN = 36;
Double_t mu[kN] = { 3.311E+03, 1.083E+03, 4.769E+02
, 1.456E+02, 6.166E+01, 3.144E+01
, 1.809E+01, 7.562E+00, 3.879E+00
, 1.236E+00, 6.178E-01, 3.066E-01
, 2.288E-01, 1.980E-01, 1.817E-01
, 1.639E-01, 1.529E-01, 1.353E-01
, 1.233E-01, 1.068E-01, 9.557E-02
, 8.719E-02, 8.063E-02, 7.081E-02
, 6.364E-02, 5.693E-02, 5.180E-02
, 4.450E-02, 3.579E-02, 3.073E-02
, 2.742E-02, 2.511E-02, 2.209E-02
, 2.024E-02, 1.782E-02, 1.673E-02 };
Double_t en[kN] = { 1.00000E-03, 1.50000E-03, 2.00000E-03
, 3.00000E-03, 4.00000E-03, 5.00000E-03
, 6.00000E-03, 8.00000E-03, 1.00000E-02
, 1.50000E-02, 2.00000E-02, 3.00000E-02
, 4.00000E-02, 5.00000E-02, 6.00000E-02
, 8.00000E-02, 1.00000E-01, 1.50000E-01
, 2.00000E-01, 3.00000E-01, 4.00000E-01
, 5.00000E-01, 6.00000E-01, 8.00000E-01
, 1.00000E+00, 1.25000E+00, 1.50000E+00
, 2.00000E+00, 3.00000E+00, 4.00000E+00
, 5.00000E+00, 6.00000E+00, 8.00000E+00
, 1.00000E+01, 1.50000E+01, 2.00000E+01 };
return Interpolate(energyMeV,en,mu,kN);
}
Double_t AliTRDsimTR::GetMuO2(Double_t energyMeV)
{
const Int_t kN = 36;
Double_t mu[kN] = { 4.590E+03, 1.549E+03, 6.949E+02
, 2.171E+02, 9.315E+01, 4.790E+01
, 2.770E+01, 1.163E+01, 5.952E+00
, 1.836E+00, 8.651E-01, 3.779E-01
, 2.585E-01, 2.132E-01, 1.907E-01
, 1.678E-01, 1.551E-01, 1.361E-01
, 1.237E-01, 1.070E-01, 9.566E-02
, 8.729E-02, 8.070E-02, 7.087E-02
, 6.372E-02, 5.697E-02, 5.185E-02
, 4.459E-02, 3.597E-02, 3.100E-02
, 2.777E-02, 2.552E-02, 2.263E-02
, 2.089E-02, 1.866E-02, 1.770E-02 };
Double_t en[kN] = { 1.00000E-03, 1.50000E-03, 2.00000E-03
, 3.00000E-03, 4.00000E-03, 5.00000E-03
, 6.00000E-03, 8.00000E-03, 1.00000E-02
, 1.50000E-02, 2.00000E-02, 3.00000E-02
, 4.00000E-02, 5.00000E-02, 6.00000E-02
, 8.00000E-02, 1.00000E-01, 1.50000E-01
, 2.00000E-01, 3.00000E-01, 4.00000E-01
, 5.00000E-01, 6.00000E-01, 8.00000E-01
, 1.00000E+00, 1.25000E+00, 1.50000E+00
, 2.00000E+00, 3.00000E+00, 4.00000E+00
, 5.00000E+00, 6.00000E+00, 8.00000E+00
, 1.00000E+01, 1.50000E+01, 2.00000E+01 };
return Interpolate(energyMeV,en,mu,kN);
}
Double_t AliTRDsimTR::GetMuHe(Double_t energyMeV)
{
const Int_t kN = 36;
Double_t mu[kN] = { 6.084E+01, 1.676E+01, 6.863E+00
, 2.007E+00, 9.329E-01, 5.766E-01
, 4.195E-01, 2.933E-01, 2.476E-01
, 2.092E-01, 1.960E-01, 1.838E-01
, 1.763E-01, 1.703E-01, 1.651E-01
, 1.562E-01, 1.486E-01, 1.336E-01
, 1.224E-01, 1.064E-01, 9.535E-02
, 8.707E-02, 8.054E-02, 7.076E-02
, 6.362E-02, 5.688E-02, 5.173E-02
, 4.422E-02, 3.503E-02, 2.949E-02
, 2.577E-02, 2.307E-02, 1.940E-02
, 1.703E-02, 1.363E-02, 1.183E-02 };
Double_t en[kN] = { 1.00000E-03, 1.50000E-03, 2.00000E-03
, 3.00000E-03, 4.00000E-03, 5.00000E-03
, 6.00000E-03, 8.00000E-03, 1.00000E-02
, 1.50000E-02, 2.00000E-02, 3.00000E-02
, 4.00000E-02, 5.00000E-02, 6.00000E-02
, 8.00000E-02, 1.00000E-01, 1.50000E-01
, 2.00000E-01, 3.00000E-01, 4.00000E-01
, 5.00000E-01, 6.00000E-01, 8.00000E-01
, 1.00000E+00, 1.25000E+00, 1.50000E+00
, 2.00000E+00, 3.00000E+00, 4.00000E+00
, 5.00000E+00, 6.00000E+00, 8.00000E+00
, 1.00000E+01, 1.50000E+01, 2.00000E+01 };
return Interpolate(energyMeV,en,mu,kN);
}
Double_t AliTRDsimTR::GetMuAi(Double_t energyMeV)
{
const Int_t kN = 38;
Double_t mu[kN] = { 0.35854E+04, 0.11841E+04, 0.52458E+03,
0.16143E+03, 0.14250E+03, 0.15722E+03,
0.77538E+02, 0.40099E+02, 0.23313E+02,
0.98816E+01, 0.51000E+01, 0.16079E+01,
0.77536E+00, 0.35282E+00, 0.24790E+00,
0.20750E+00, 0.18703E+00, 0.16589E+00,
0.15375E+00, 0.13530E+00, 0.12311E+00,
0.10654E+00, 0.95297E-01, 0.86939E-01,
0.80390E-01, 0.70596E-01, 0.63452E-01,
0.56754E-01, 0.51644E-01, 0.44382E-01,
0.35733E-01, 0.30721E-01, 0.27450E-01,
0.25171E-01, 0.22205E-01, 0.20399E-01,
0.18053E-01, 0.18057E-01 };
Double_t en[kN] = { 0.10000E-02, 0.15000E-02, 0.20000E-02,
0.30000E-02, 0.32029E-02, 0.32029E-02,
0.40000E-02, 0.50000E-02, 0.60000E-02,
0.80000E-02, 0.10000E-01, 0.15000E-01,
0.20000E-01, 0.30000E-01, 0.40000E-01,
0.50000E-01, 0.60000E-01, 0.80000E-01,
0.10000E+00, 0.15000E+00, 0.20000E+00,
0.30000E+00, 0.40000E+00, 0.50000E+00,
0.60000E+00, 0.80000E+00, 0.10000E+01,
0.12500E+01, 0.15000E+01, 0.20000E+01,
0.30000E+01, 0.40000E+01, 0.50000E+01,
0.60000E+01, 0.80000E+01, 0.10000E+02,
0.15000E+02, 0.20000E+02 };
return Interpolate(energyMeV,en,mu,kN);
}
Double_t AliTRDsimTR::Interpolate(Double_t energyMeV
, Double_t *en
, const Double_t * const mu
, Int_t n)
{
Double_t de = 0;
Int_t index = 0;
Int_t istat = Locate(en,n,energyMeV,index,de);
if (istat == 0) {
return (mu[index] - de * (mu[index] - mu[index+1])
/ (en[index+1] - en[index] ));
}
else {
return 0.0;
}
}
Int_t AliTRDsimTR::Locate(Double_t *xv, Int_t n, Double_t xval
, Int_t &kl, Double_t &dx)
{
if (xval >= xv[n-1]) {
return 1;
}
if (xval < xv[0]) {
return -1;
}
Int_t km;
Int_t kh = n - 1;
kl = 0;
while (kh - kl > 1) {
if (xval < xv[km = (kl+kh)/2]) {
kh = km;
}
else {
kl = km;
}
}
if ((xval < xv[kl]) ||
(xval > xv[kl+1]) ||
(kl >= n-1)) {
AliFatal(Form("Locate failed xv[%d] %f xval %f xv[%d] %f!!!\n"
,kl,xv[kl],xval,kl+1,xv[kl+1]));
exit(1);
}
dx = xval - xv[kl];
return 0;
}
Int_t AliTRDsimTR::SelectNFoils(Float_t p) const
{
Int_t foils = fNFoils[fNFoilsDim-1];
for (Int_t iFoil = 0; iFoil < fNFoilsDim; iFoil++) {
if (p < fNFoilsUp[iFoil]) {
foils = fNFoils[iFoil];
break;
}
}
return foils;
}