/*
$Log$
+Revision 1.26 2001/06/13 11:10:55 coppedis
+Minor changes
+
Revision 1.25 2001/06/12 13:45:05 coppedis
TDI in correct position and minor correction
///////////////////////////////////////////////////////////////////////////////
// //
-// Zero Degree Calorimeter //
-// This class contains the basic functions for the ZDC //
-// Functions specific to one particular geometry are //
-// contained in the derived classes //
+// AliZDCv1 --- ZDC geometry as designed in TDR (obsolete!) //
+// with the EM ZDC at 116 m from IP //
+// Just one set of ZDC is inserted, on the same side of the dimuon arm //
// //
///////////////////////////////////////////////////////////////////////////////
// --- AliRoot classes
#include "AliZDCv1.h"
#include "AliZDCHit.h"
-#include "AliZDCDigit.h"
#include "AliRun.h"
#include "AliDetector.h"
#include "AliMagF.h"
ClassImp(AliZDCv1)
-
-///////////////////////////////////////////////////////////////////////////////
-// //
-// Zero Degree Calorimeter version 1 //
-// //
-///////////////////////////////////////////////////////////////////////////////
-
//_____________________________________________________________________________
AliZDCv1::AliZDCv1() : AliZDC()
{
//
// Check that DIPO, ABSO, DIPO and SHIL is there (otherwise tracking is wrong!!!)
- AliModule* PIPE=gAlice->GetModule("PIPE");
- AliModule* ABSO=gAlice->GetModule("ABSO");
- AliModule* DIPO=gAlice->GetModule("DIPO");
- AliModule* SHIL=gAlice->GetModule("SHIL");
+ AliModule *PIPE=gAlice->GetModule("PIPE");
+ AliModule *ABSO=gAlice->GetModule("ABSO");
+ AliModule *DIPO=gAlice->GetModule("DIPO");
+ AliModule *SHIL=gAlice->GetModule("SHIL");
if((!PIPE) || (!ABSO) || (!DIPO) || (!SHIL)) {
Error("Constructor","ZDC needs PIPE, ABSO, DIPO and SHIL!!!\n");
exit(1);
fDimZP[1] = 6.;
fDimZP[2] = 75.;
fPosZN[0] = 0.;
- fPosZN[1] = -1.2;
+ fPosZN[1] = 1.2;
fPosZN[2] = 11650.;
fPosZP[0] = -24.;
fPosZP[1] = 0.;
fPosZEM[1] = 5.8;
fPosZEM[2] = 11600.;
-
- fDigits = new TClonesArray("AliZDCDigit",1000);
}
//_____________________________________________________________________________
// QT09 is 10 cm longer to accomodate TDI
tubpar[2] = 515.4/2.;
gMC->Gsvolu("QT09", "TUBE", idtmed[7], tubpar, 3);
- gMC->Gspos("QT09", 1, "ZDC ", 0., 0., tubpar[2] + zd1, 0, "ONLY");
-
+ gMC->Gspos("QT09", 1, "ZDC ", 0., 0., tubpar[2] + zd1, 0, "ONLY");
// --- Insert TDI (inside ZDC volume)
fclose(fp7);
fclose(fp8);
}
-
-//_____________________________________________________________________________
-Int_t AliZDCv1::Digitize(Int_t Det, Int_t Quad, Int_t Light)
-{
- // Evaluation of the ADC channel corresponding to the light yield Light
-
- if(fDebug == 1){
- printf("\n Digitize -> Det = %d, Quad = %d, Light = %d\n", Det, Quad, Light);
- }
-
- // Parameters for conversion of light yield in ADC channels
- Float_t fPMGain[3][5]; // PM gain
- Float_t fADCRes; // ADC conversion factor
-
- Int_t j,i;
- for(i=0; i<3; i++){
- for(j=0; j<5; j++){
- fPMGain[i][j] = 100000.;
- }
- }
- fADCRes = 0.00000064; // ADC Resolution: 250 fC/ADCch
-
- Int_t ADCch = Int_t(Light*fPMGain[Det-1][Quad]*fADCRes);
-
- return ADCch;
-}
-
-
-//_____________________________________________________________________________
-void AliZDCv1::SDigits2Digits()
-{
- Hits2Digits(gAlice->GetNtrack());
-}
-
-//_____________________________________________________________________________
-void AliZDCv1::Hits2Digits(Int_t ntracks)
-{
- AliZDCDigit *newdigit;
- AliZDCHit *hit;
-
- Int_t PMCZN = 0, PMCZP = 0, PMQZN[4], PMQZP[4], PMZEM = 0;
-
- Int_t i;
- for(i=0; i<4; i++){
- PMQZN[i] =0;
- PMQZP[i] =0;
- }
-
- Int_t itrack = 0;
- for(itrack=0; itrack<ntracks; itrack++){
- gAlice->ResetHits();
- gAlice->TreeH()->GetEvent(itrack);
- for(i=0; i<fHits->GetEntries(); i++){
- hit = (AliZDCHit*)fHits->At(i);
- Int_t det = hit->GetVolume(0);
- Int_t quad = hit->GetVolume(1);
- Int_t lightQ = Int_t(hit->GetLightPMQ());
- Int_t lightC = Int_t(hit->GetLightPMC());
- if(fDebug == 1)
- printf(" \n itrack = %d, fNhits = %d, det = %d, quad = %d,"
- "lightC = %d lightQ = %d\n", itrack, fNhits, det, quad, lightC, lightQ);
-
- if(det == 1){ //ZN
- PMCZN = PMCZN + lightC;
- PMQZN[quad-1] = PMQZN[quad-1] + lightQ;
- }
-
- if(det == 2){ //ZP
- PMCZP = PMCZP + lightC;
- PMQZP[quad-1] = PMQZP[quad-1] + lightQ;
- }
-
- if(det == 3){ //ZEM
- PMZEM = PMZEM + lightC;
- }
- } // Hits loop
-
- } // Tracks loop
-
- if(fDebug == 1){
- printf("\n PMCZN = %d, PMQZN[0] = %d, PMQZN[1] = %d, PMQZN[2] = %d, PMQZN[3] = %d\n"
- , PMCZN, PMQZN[0], PMQZN[1], PMQZN[2], PMQZN[3]);
- printf("\n PMCZP = %d, PMQZP[0] = %d, PMQZP[1] = %d, PMQZP[2] = %d, PMQZP[3] = %d\n"
- , PMCZP, PMQZP[0], PMQZP[1], PMQZP[2], PMQZP[3]);
- printf("\n PMZEM = %d\n", PMZEM);
- }
-
- // ------------------------------------ Hits2Digits
- // Digits for ZN
- newdigit = new AliZDCDigit(1, 0, Digitize(1, 0, PMCZN));
- new((*fDigits)[fNdigits]) AliZDCDigit(*newdigit);
- fNdigits++;
- delete newdigit;
-
- Int_t j;
- for(j=0; j<4; j++){
- newdigit = new AliZDCDigit(1, j+1, Digitize(1, j+1, PMQZN[j]));
- new((*fDigits)[fNdigits]) AliZDCDigit(*newdigit);
- fNdigits++;
- delete newdigit;
- }
-
- // Digits for ZP
- newdigit = new AliZDCDigit(2, 0, Digitize(2, 0, PMCZP));
- new((*fDigits)[fNdigits]) AliZDCDigit(*newdigit);
- fNdigits++;
- delete newdigit;
-
- Int_t k;
- for(k=0; k<4; k++){
- newdigit = new AliZDCDigit(2, k+1, Digitize(2, k+1, PMQZP[k]));
- new((*fDigits)[fNdigits]) AliZDCDigit(*newdigit);
- fNdigits++;
- delete newdigit;
- }
-
- // Digits for ZEM
- newdigit = new AliZDCDigit(3, 0, Digitize(3, 0, PMZEM));
- new((*fDigits)[fNdigits]) AliZDCDigit(*newdigit);
- fNdigits++;
- delete newdigit;
-
-
- gAlice->TreeD()->Fill();
- gAlice->TreeD()->Write(0,TObject::kOverwrite);
-
-// if(fDebug == 1){
-// printf("\n Event Digits -----------------------------------------------------\n");
-// fDigits->Print("");
-// }
-
-}
-//_____________________________________________________________________________
- void AliZDCv1::MakeBranch(Option_t *opt, const char *file)
-{
- //
- // Create a new branch in the current Root Tree
- //
-
- AliDetector::MakeBranch(opt);
-
- Char_t branchname[10];
- sprintf(branchname,"%s",GetName());
- const char *cD = strstr(opt,"D");
-
- if (gAlice->TreeD() && cD) {
-
- // Creation of the digits from hits
-
- if(fDigits!=0) fDigits->Clear();
- else fDigits = new TClonesArray ("AliZDCDigit",1000);
- char branchname[10];
- sprintf(branchname,"%s",GetName());
- MakeBranchInTree(gAlice->TreeD(),
- branchname, &fDigits, fBufferSize, file) ;
- printf("* AliZDCv1::MakeBranch * Making Branch %s for digits\n\n",branchname);
- }
-
-}
//_____________________________________________________________________________
void AliZDCv1::StepManager()
{
Int_t j, vol[2], ibeta=0, ialfa, ibe, nphe;
Float_t x[3], xdet[3], destep, hits[10], m, ekin, um[3], ud[3], be, radius, out;
+ Float_t xalic[3], z, GuiEff, GuiPar[4]={0.31,-0.0004,0.0197,0.7958};
TLorentzVector s, p;
const char *knamed;
if((gMC->GetMedium() == fMedSensZN) || (gMC->GetMedium() == fMedSensZP) ||
(gMC->GetMedium() == fMedSensGR) || (gMC->GetMedium() == fMedSensF1) ||
(gMC->GetMedium() == fMedSensF2) || (gMC->GetMedium() == fMedSensZEM)){
+
+// --- This part is for no shower developement in beam pipe and TDI
// (gMC->GetMedium() == fMedSensPI) || (gMC->GetMedium() == fMedSensTDI)){
// If particle interacts with beam pipe -> return
// Determine in which ZDC the particle is
knamed = gMC->CurrentVolName();
- if(!strncmp(knamed,"ZN",2))vol[0]=1;
- if(!strncmp(knamed,"ZP",2))vol[0]=2;
- if(!strncmp(knamed,"ZE",2))vol[0]=3;
+ if(!strncmp(knamed,"ZN",2)){
+ vol[0]=1;
+ }
+ else if(!strncmp(knamed,"ZP",2)){
+ vol[0]=2;
+ }
+ else if(!strncmp(knamed,"ZE",2)){
+ vol[0]=3;
+ }
// Determine in which quadrant the particle is
-
- //Quadrant in ZN
- if(vol[0]==1){
+
+ if(vol[0]==1){ //Quadrant in ZN
xdet[0] = x[0]-fPosZN[0];
xdet[1] = x[1]-fPosZN[1];
if((xdet[0]<=0.) && (xdet[1]>=0.)) vol[1]=1;
if((xdet[0]<0.) && (xdet[1]<0.)) vol[1]=3;
if((xdet[0]>0.) && (xdet[1]<0.)) vol[1]=4;
}
-
- //Quadrant in ZP
- if(vol[0]==2){
+ else if(vol[0]==2){ //Quadrant in ZP
xdet[0] = x[0]-fPosZP[0];
xdet[1] = x[1]-fPosZP[1];
if(xdet[0]>fDimZP[0])xdet[0]=fDimZP[0]-0.01;
for(int i=1; i<=4; i++){
if(xqZP>=(i-3) && xqZP<(i-2)){
vol[1] = i;
- if(i==0) printf("\n!!! vol[1] = 0 -> xqZP = %f\n", xqZP);
break;
}
}
}
-
- //ZEM has only 1 quadrant
- if(vol[0] == 3){
+ else if(vol[0] == 3){ //ZEM has only 1 quadrant
vol[1] = 1;
xdet[0] = x[0]-fPosZEM[0];
xdet[1] = x[1]-fPosZEM[1];
gMC->TrackMomentum(p);
Float_t ptot=TMath::Sqrt(p[0]*p[0]+p[1]*p[1]+p[2]*p[2]);
Float_t beta = ptot/p[3];
- if(beta<0.67) return;
- if((beta>=0.67) && (beta<=0.75)) ibeta = 0;
- if((beta>0.75) && (beta<=0.85)) ibeta = 1;
- if((beta>0.85) && (beta<=0.95)) ibeta = 2;
- if(beta>0.95) ibeta = 3;
+ if(beta<0.67){
+ return;
+ }
+ else if((beta>=0.67) && (beta<=0.75)){
+ ibeta = 0;
+ }
+ if((beta>0.75) && (beta<=0.85)){
+ ibeta = 1;
+ }
+ if((beta>0.85) && (beta<=0.95)){
+ ibeta = 2;
+ }
+ if(beta>0.95){
+ ibeta = 3;
+ }
// Angle between particle trajectory and fibre axis
// 1 -> Momentum directions
be = TMath::Abs(ud[0]);
}
- if((vol[0]==1)) radius = fFibZN[1];
- if((vol[0]==2)) radius = fFibZP[1];
+ if((vol[0]==1)){
+ radius = fFibZN[1];
+ }
+ else if((vol[0]==2)){
+ radius = fFibZP[1];
+ }
ibe = Int_t(be*1000.+1);
//Looking into the light tables
Float_t charge = gMC->TrackCharge();
- // (1) ZN
- if((vol[0]==1)) {
+ if((vol[0]==1)) { // (1) ZN fibres
if(ibe>fNben) ibe=fNben;
out = charge*charge*fTablen[ibeta][ialfa][ibe];
nphe = gRandom->Poisson(out);
AddHit(gAlice->CurrentTrack(), vol, hits);
}
}
-
- // (2) ZP
- if((vol[0]==2)) {
+ else if((vol[0]==2)) { // (2) ZP fibres
if(ibe>fNbep) ibe=fNbep;
out = charge*charge*fTablep[ibeta][ialfa][ibe];
nphe = gRandom->Poisson(out);
AddHit(gAlice->CurrentTrack(), vol, hits);
}
}
- // (3) ZEM
- if((vol[0]==3)) {
+ else if((vol[0]==3)) { // (3) ZEM fibres
if(ibe>fNbep) ibe=fNbep;
out = charge*charge*fTablep[ibeta][ialfa][ibe];
+ gMC->TrackPosition(s);
+ for(j=0; j<=2; j++){
+ xalic[j] = s[j];
+ }
+ // z-coordinate from ZEM front face
+ // NB-> fPosZEM[2]+fZEMLength = -1000.+2*10.3 = 979.69 cm
+ z = -xalic[2]+fPosZEM[2]+2*fZEMLength-xalic[1];
+// z = xalic[2]-fPosZEM[2]-fZEMLength-xalic[1]*(TMath::Tan(45.*kDegrad));
+// printf("\n fPosZEM[2]+2*fZEMLength = %f", fPosZEM[2]+2*fZEMLength);
+ GuiEff = GuiPar[0]*(GuiPar[1]*z*z+GuiPar[2]*z+GuiPar[3]);
+// printf("\n xalic[0] = %f xalic[1] = %f xalic[2] = %f z = %f \n",
+// xalic[0],xalic[1],xalic[2],z);
+ out = out*GuiEff;
nphe = gRandom->Poisson(out);
+// printf(" out*GuiEff = %f nphe = %d", out, nphe);
// printf("ZEM --- ibeta = %d, ialfa = %d, ibe = %d"
// " -> out = %f, nphe = %d\n", ibeta, ialfa, ibe, out, nphe);
hits[7] = 0;
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff