-
// **************************************************************************
// * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
// * *
// **************************************************************************
-#include "AliHMPIDv2.h" //class header
-#include "AliHMPIDParam.h" //StepManager()
-#include "AliHMPIDHit.h" //Hits2SDigs(),StepManager()
-#include "AliHMPIDDigit.h" //Digits2Raw(), Raw2SDigits()
-#include "AliRawReader.h" //Raw2SDigits()
-#include <TVirtualMC.h> //StepManager() for gMC
-#include <TPDGCode.h> //StepHistory()
-#include <AliStack.h> //StepManager(),Hits2SDigits()78.6
+#include "AliHMPIDv2.h" //class header
+#include "AliHMPIDParam.h" //StepManager()
+#include "AliHMPIDHit.h" //Hits2SDigs(),StepManager()
+#include "AliHMPIDDigit.h" //Digits2Raw(), Raw2SDigits()
+#include "AliHMPIDRawStream.h" //Digits2Raw(), Raw2SDigits()
+#include "AliRawReader.h" //Raw2SDigits()
+#include "AliTrackReference.h"
+#include <TVirtualMC.h> //StepManager() for gMC
+#include <TPDGCode.h> //StepHistory()
+#include <AliStack.h> //StepManager(),Hits2SDigits()78.6
#include <AliLoader.h> //Hits2SDigits()
#include <AliRunLoader.h> //Hits2SDigits()
-#include <AliConst.h>
-#include <AliPDG.h>
#include <AliMC.h> //StepManager()
#include <AliRun.h> //CreateMaterials()
#include <AliMagF.h> //CreateMaterials()
#include <TLorentzVector.h> //IsLostByFresnel()
#include <AliCDBManager.h> //CreateMaterials()
#include <AliCDBEntry.h> //CreateMaterials()
+#include <TGeoPhysicalNode.h> //AddAlignableVolumes()
ClassImp(AliHMPIDv2)
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// Associates the symbolic volume name with the corresponding volume path. Interface method from AliModule invoked from AliMC
// Arguments: none
// Returns: none
- for(Int_t i=AliHMPIDDigit::kMinCh;i<=AliHMPIDDigit::kMaxCh;i++)
- gGeoManager->SetAlignableEntry(Form("/HMPID/Chamber%i",i),Form("ALIC_1/Hmp_%i",i)); //clm ???
+
+ TGeoHMatrix *pGm = new TGeoHMatrix;
+ Double_t trans[3]={0.5*131.24,0.5*126.16,0}; //translation from LORS to TGeo RS (half size AllX, half size allY,0)
+ pGm->SetTranslation(trans);
+
+ Double_t ph[7]={10.,10., 30.,30.,30. ,50.,50};
+
+ for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++) {
+ gGeoManager->SetAlignableEntry(Form("/HMPID/Chamber%i",iCh),Form("ALIC_1/Hmp_%i",iCh)); //aligment without AliCluster3D
+ //Get Tracking To Local matrcies for alignment with AliCluster3D
+ TGeoPNEntry *eCh = gGeoManager->GetAlignableEntry(Form("/HMPID/Chamber%i",iCh));
+ if (eCh) {
+ const char *path = eCh->GetTitle();
+ if (!gGeoManager->cd(path)) {
+ AliFatal(Form("Volume path %s not valid!",path));
+ }
+ TGeoHMatrix *globMatrix = gGeoManager->GetCurrentMatrix();
+ //Double_t phi = 20.0 * ((iCh+1) / 3) + 10.0;
+ Double_t phi = ph[iCh];
+ TGeoHMatrix *t2l = new TGeoHMatrix();
+ t2l->RotateZ(phi);
+ t2l->MultiplyLeft(&(globMatrix->Inverse()));
+ eCh->SetMatrix(t2l);
+ }//eCh
+ else {
+ AliError(Form("Alignable entry /HMPID/Chamber%i is not valid!",iCh));
+ }
+ }//iCh loop
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
void AliHMPIDv2::CreateMaterials()
AliMaterial(++matId,"W" ,aW ,zW ,dW ,radW ,absW ); AliMedium(kW ,"W" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
AliMaterial(++matId,"Al" ,aAl ,zAl ,dAl ,radAl ,absAl ); AliMedium(kAl ,"Al" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
AliMaterial(++matId,"Ar" ,aAr ,zAr ,dAr ,radAr ,absAr ); AliMedium(kAr ,"Ar" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
-
- DefineOpticalProperties();
}//void AliHMPID::CreateMaterials()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
void AliHMPIDv2::CreateGeometry()
TGeoVolume *hmp=gGeoManager->MakeBox ("Hmp",ch4,1681*mm/2, 1466*mm/2,(2*80*mm+2*60*mm)/2);//2033P1 z from p84 TDR
TString title=GetTitle();
- if(title.Contains("TestBeam") )
- {
- gGeoManager->GetVolume("ALIC")->AddNode(hmp,0,new TGeoTranslation(5.0*mm/2 , 5.0*mm/2, 1000.0*mm));
- }
- else
- {
- for(Int_t iCh=AliHMPIDDigit::kMinCh;iCh<=AliHMPIDDigit::kMaxCh;iCh++){//place 7 chambers
+ if(title.Contains("TestBeam")){
+ gGeoManager->GetVolume("ALIC")->AddNode(hmp,0);
+ }else{
+ for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){//place 7 chambers
TGeoHMatrix *pMatrix=new TGeoHMatrix;
- AliHMPIDParam::IdealPosition(iCh,pMatrix);
+ IdealPosition(iCh,pMatrix);
gGeoManager->GetVolume("ALIC")->AddNode(hmp,iCh,pMatrix);
- }
- }
+ }
+ }
TGeoRotation *rot=new TGeoRotation("HwireRot"); rot->RotateY(90); //rotate wires around Y to be along X (initially along Z)
TGeoVolume *sbo=gGeoManager->MakeBox ("Hsbo",ch4 , 1419*mm/2 , 1378.00*mm/2 , 50.5*mm/2);//2072P1
TGeoVolume *col=gGeoManager->MakeTube("Hcol",cu , 0*mm , 100.00*um , 1323.0*mm/2);
TGeoVolume *sec=gGeoManager->MakeBox ("Hsec",ch4 , 648*mm/2 , 411.00*mm/2 , 6.2*mm/2);//sec=gap
- TGeoVolume *gap=gGeoManager->MakeBox ("Hgap",ch4 , 640*mm/2 , 403.20*mm/2 , 6.2*mm/2);//gap=pad+ano+cat
- TGeoVolume *cat=gGeoManager->MakeTube("Hcat",cu , 0*mm , 50.00*um , 8.0*mm/2);
- TGeoVolume *ano=gGeoManager->MakeTube("Hano",w , 0*mm , 20.00*um , 8.0*mm/2);
- TGeoVolume *pad=gGeoManager->MakeBox ("Hpad",csi , 8*mm/2 , 8.40*mm/2 , 1.7*mm/2);
+ Double_t cellx=8.04*mm,celly=8.4*mm; Int_t nPadX=80, nPadY=48;
+ TGeoVolume *gap=gGeoManager->MakeBox ("Hgap",ch4 , cellx*nPadX/2 , celly*nPadY/2 , 6.2*mm/2); //x=8.04*80 y=8.4*48 z=pad+pad-ano+marign 2006p1
+ TGeoVolume *row= gap->Divide ("Hrow",2,nPadY,0,0);//along Y->48 rows
+ TGeoVolume *cel= row->Divide ("Hcel",1,nPadX,0,0);//along X->80 cells
+ TGeoVolume *cat=gGeoManager->MakeTube("Hcat",cu , 0.00*mm , 50.00*um , cellx/2);
+ TGeoVolume *ano=gGeoManager->MakeTube("Hano",w , 0.00*mm , 20.00*um , cellx/2);
+ TGeoVolume *pad=gGeoManager->MakeBox ("Hpad",csi , 7.54*mm/2 , 7.90*mm/2 , 1.7*mm/2); //2006P1
TGeoVolume *fr1=gGeoManager->MakeBox ("Hfr1",al , 1463*mm/2 , 1422.00*mm/2 , 58.3*mm/2);//2040P1
TGeoVolume *fr1up=gGeoManager->MakeBox ("Hfr1up",ch4,(1426.00-37.00)*mm/2 , (1385.00-37.00)*mm/2 , 20.0*mm/2);//2040P1
TGeoVolume *fr1perUpBig=gGeoManager->MakeBox ("Hfr1perUpBig",ch4,1389*mm/2,35*mm/2,10*mm/2);
TGeoVolume *smo=gGeoManager->MakeBox ("Hsmo",ar , 114*mm/2 , 89.25*mm/2 , 38.3*mm/2);//2001P2
+
+ TGeoVolume *fr3= gGeoManager->MakeBox("Hfr3", al, 1463*mm/2, 1422*mm/2, 34*mm/2);//2041P1
+ TGeoVolume *fr3up= gGeoManager->MakeBox("Hfr3up", ch4, 1323*mm/2, 1282*mm/2, 20*mm/2);//2041P1
+ TGeoVolume *fr3down=gGeoManager->MakeBox("Hfr3down", ch4, 1437*mm/2, 1370*mm/2, 14*mm/2);//2041P1
+
+
+
// ^ Y z= z=-12mm z=98.25mm ALIC->7xHmp (virtual)-->1xHsbo (virtual) --->2xHcov (real) 2072P1
// | ____________________________________ | |-->1xHhon (real) 2072P1
// | | ______ ____ ______ | |
hmp->AddNode(sec,2,new TGeoTranslation(-335*mm, 0*mm, 78.6*mm)); hmp->AddNode(sec,3,new TGeoTranslation(+335*mm, 0*mm, 78.6*mm));
hmp->AddNode(sec,0,new TGeoTranslation(-335*mm,-433*mm, 78.6*mm)); hmp->AddNode(sec,1,new TGeoTranslation(+335*mm,-433*mm, 78.6*mm));
sec->AddNode(gap,1,new TGeoTranslation(0,0,0.*mm));
- TGeoVolume *row= gap->Divide("Hrow",2,48,0,0);//along Y->48 rows
- TGeoVolume *cel= row->Divide("Hcel",1,80,0,0);//along X->80 cells
cel->AddNode(cat,1,new TGeoCombiTrans (0, 3.15*mm , -2.70*mm , rot)); //4 cathode wires
cel->AddNode(ano,1,new TGeoCombiTrans (0, 2.00*mm , -0.29*mm , rot)); //2 anod wires
cel->AddNode(cat,2,new TGeoCombiTrans (0, 1.05*mm , -2.70*mm , rot));
ppf->AddNode(smo,6,new TGeoTranslation(+ 65.0*mm,+ 50.625*mm, 0.*mm));
ppf->AddNode(smo,7,new TGeoTranslation(+ 65.0*mm,+151.875*mm, 0.*mm));
-
+hmp->AddNode(fr3,1,new TGeoTranslation(0.,0.,(80.-29.)*mm-34.*mm/2));
+ fr3->AddNode( fr3up,1, new TGeoTranslation(0., 0., 7*mm));
+ fr3->AddNode(fr3down,1,new TGeoTranslation(0., 0., -10*mm));
AliDebug(1,"Stop v2. HMPID option");
}//CreateGeometry()
const Int_t kNbins=30; //number of photon energy points
Float_t emin=5.5,emax=8.5; //Photon energy range,[eV]
Float_t aEckov [kNbins];
+ Double_t dEckov [kNbins];
Float_t aAbsRad[kNbins], aAbsWin[kNbins], aAbsGap[kNbins], aAbsMet[kNbins];
Float_t aIdxRad[kNbins], aIdxWin[kNbins], aIdxGap[kNbins], aIdxMet[kNbins], aIdxPc[kNbins];
Float_t aQeAll [kNbins], aQePc [kNbins];
+ Double_t dReflMet[kNbins], dQePc[kNbins];
- TF2 *pRaIF=new TF2("HidxRad","sqrt(1+0.554*(1239.84/x)^2/((1239.84/x)^2-5796)-0.0005*(y-20))" ,emin,emax,0,50); //DiMauro mail temp 0-50 degrees C
+ TF2 *pRaIF=new TF2("HidxRad","sqrt(1+0.554*(1239.84/x)^2/((1239.84/x)^2-5769)-0.0005*(y-20))" ,emin,emax,0,50); //DiMauro mail temp 0-50 degrees C
TF1 *pWiIF=new TF1("HidxWin","sqrt(1+46.411/(10.666*10.666-x*x)+228.71/(18.125*18.125-x*x))" ,emin,emax); //SiO2 idx TDR p.35
TF1 *pGaIF=new TF1("HidxGap","1+0.12489e-6/(2.62e-4 - x*x/1239.84/1239.84)" ,emin,emax); //?????? from where
TF1 *pGaAF=new TF1("HabsGap","(x<7.75)*6512.399+(x>=7.75)*3.90743e-2/(-1.655279e-1+6.307392e-2*x-8.011441e-3*x*x+3.392126e-4*x*x*x)",emin,emax); //????? from where
TF1 *pQeF =new TF1("Hqe" ,"0+(x>6.07267)*0.344811*(1-exp(-1.29730*(x-6.07267)))" ,emin,emax); //fit from DiMauro data 28.10.03
-
+
+ TString title=GetTitle();
+ Bool_t isFlatIdx=title.Contains("FlatIdx");
+
for(Int_t i=0;i<kNbins;i++){
Float_t eV=emin+0.1*i; //Ckov energy in eV
aEckov [i] =1e-9*eV; //Ckov energy in GeV
- aAbsRad[i]=pRaAF->Eval(eV); aIdxRad[i]=1.292;//pRaIF->Eval(eV,20); //Simulation for 20 degress C
- aAbsWin[i]=pWiAF->Eval(eV); aIdxWin[i]=1.5787;//pWiIF->Eval(eV);
- aAbsGap[i]=pGaAF->Eval(eV); aIdxGap[i]=1.0005;//pGaIF->Eval(eV);
+ dEckov [i] = aEckov[i];
+ aAbsRad[i]=pRaAF->Eval(eV); (isFlatIdx)? aIdxRad[i]=1.292: aIdxRad[i]=pRaIF->Eval(eV,20);
+ aAbsWin[i]=pWiAF->Eval(eV); aIdxWin[i]=pWiIF->Eval(eV);
+ aAbsGap[i]=pGaAF->Eval(eV); aIdxGap[i]=pGaIF->Eval(eV);
aQeAll[i] =1; //QE for all other materials except for PC must be 1.
aAbsMet[i] =0.0001; aIdxMet[i]=0; //metal ref idx must be 0 in order to reflect photon
aIdxPc [i]=1; aQePc [i]=pQeF->Eval(eV); //PC ref idx must be 1 in order to apply photon to QE conversion
-
+ dQePc [i]=pQeF->Eval(eV);
+ dReflMet[i] = 0.; // no reflection on the surface of the pc (?)
}
gMC->SetCerenkov((*fIdtmed)[kC6F14] , kNbins, aEckov, aAbsRad , aQeAll , aIdxRad );
gMC->SetCerenkov((*fIdtmed)[kSiO2] , kNbins, aEckov, aAbsWin , aQeAll , aIdxWin );
gMC->SetCerenkov((*fIdtmed)[kW] , kNbins, aEckov, aAbsMet , aQeAll , aIdxMet ); //n=0 means reflect photons
gMC->SetCerenkov((*fIdtmed)[kCsI] , kNbins, aEckov, aAbsMet , aQePc , aIdxPc ); //n=1 means convert photons
gMC->SetCerenkov((*fIdtmed)[kAl] , kNbins, aEckov, aAbsMet , aQeAll , aIdxMet );
+
+ // Define a skin surface for the photocatode to enable 'detection' in G4
+ gMC->DefineOpSurface("surfPc", kGlisur /*kUnified*/,kDielectric_metal,kPolished, 0.);
+ gMC->SetMaterialProperty("surfPc", "EFFICIENCY", kNbins, dEckov, dQePc);
+ gMC->SetMaterialProperty("surfPc", "REFLECTIVITY", kNbins, dEckov, dReflMet);
+ gMC->SetSkinSurface("skinPc", "Rpc", "surfPc");
+
delete pRaAF;delete pWiAF;delete pGaAF; delete pRaIF; delete pWiIF; delete pGaIF; delete pQeF;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
}
treeD->GetEntry(0);
- AliHMPIDDigit::WriteRaw(DigLst());
-
+
+ AliHMPIDRawStream *pRS=0x0;
+ pRS->WriteRaw(DigLst());
+
GetLoader()->UnloadDigits();
AliDebug(1,"Stop.");
}//Digits2Raw()
// Interface methode ivoked from AliSimulation to create a list of sdigits from raw digits. Events loop is done in AliSimulation
// Arguments: pRR- raw reader
// Returns: kTRUE on success (currently ignored in AliSimulation::ConvertRaw2SDigits())
+
AliHMPIDDigit sdi; //tmp sdigit, raw digit will be converted to it
-
if(!GetLoader()->TreeS()) {MakeTree("S"); MakeBranch("S");}
TClonesArray *pSdiLst=SdiLst(); Int_t iSdiCnt=0; //tmp list of sdigits for all chambers
- pRR->Select("HMPID",0,13);//select all HMPID DDL files
- UInt_t w32=0;
- while(pRR->ReadNextInt(w32)){//raw records loop (in selected DDL files)
- UInt_t ddl=pRR->GetDDLID(); //returns 0,1,2 ... 13
- sdi.Raw(ddl,w32);
- new((*pSdiLst)[iSdiCnt++]) AliHMPIDDigit(sdi); //add this digit to the tmp list
- }//raw records loop
+ AliHMPIDRawStream stream(pRR);
+ while(stream.Next())
+ {
+ UInt_t ddl=stream.GetDDLNumber(); //returns 0,1,2 ... 13
+ for(Int_t row = 1; row <=AliHMPIDRawStream::kNRows; row++){
+ for(Int_t dil = 1; dil <=AliHMPIDRawStream::kNDILOGICAdd; dil++){
+ for(Int_t pad = 0; pad < AliHMPIDRawStream::kNPadAdd; pad++){
+ if(stream.GetCharge(ddl,row,dil,pad)<1) continue;
+ AliHMPIDDigit sdi(stream.GetPad(ddl,row,dil,pad),stream.GetCharge(ddl,row,dil,pad));
+ new((*pSdiLst)[iSdiCnt++]) AliHMPIDDigit(sdi); //add this digit to the tmp list
+ }//pad
+ }//dil
+ }//row
+ }
+
GetLoader()->TreeS()->Fill(); GetLoader()->WriteSDigits("OVERWRITE");//write out sdigits
SdiReset();
return kTRUE;
else
if(gMC->IsTrackStop()) flag="stoped in";
-
-
-
Int_t vid=0,copy=0;
TString path=gMC->CurrentVolName(); path.Prepend("-");path.Prepend(gMC->CurrentVolOffName(1));//current volume and his mother are always there
vid=gMC->CurrentVolOffID(2,copy); if(vid) {path.Prepend("-");path.Prepend(gMC->VolName(vid));}
if((gMC->TrackPid()==50000050||gMC->TrackPid()==50000051)&&gMC->CurrentVolID(copy)==fIdPad){ //photon (Ckov or feedback) hit PC (fIdPad)
if(gMC->Edep()>0){ //photon survided QE test i.e. produces electron
if(IsLostByFresnel()){ gMC->StopTrack(); return;} //photon lost due to fersnel reflection on PC
- gMC->CurrentVolOffID(5,copy); //current chamber since geomtry tree is Hmp-Hsec-Hgap-Hrow-Hcel-Hpad
+ gMC->CurrentVolOffID(5,copy); //current chamber since geomtry tree is Hmp-Hsec-Hgap-Hrow-Hcel-Hpad
Int_t tid= gMC->GetStack()->GetCurrentTrackNumber(); //take TID
Int_t pid= gMC->TrackPid(); //take PID
Float_t etot= gMC->Etot(); //total hpoton energy, [GeV]
Double_t x[3]; gMC->TrackPosition(x[0],x[1],x[2]); //take MARS position at entrance to PC
Float_t xl,yl; AliHMPIDParam::Instance()->Mars2Lors(copy,x,xl,yl); //take LORS position
- if ( yl < 0 ) Printf("-------------------> SUPER PROBLEM PHOTON>>> Ch: %d, x[]: %f %f %f (MARS)-> xl: %f yl: %f",copy,x[0],x[1],x[2],xl,yl);
new((*fHits)[fNhits++])AliHMPIDHit(copy,etot,pid,tid,xl,yl,x); //HIT for photon, position at P, etot will be set to Q
- GenFee(etot); //generate feedback photons etot is modified in hit ctor to Q of hit
+ if(fDoFeed) GenFee(etot); //generate feedback photons etot is modified in hit ctor to Q of hit
}//photon hit PC and DE >0
}//photon hit PC
//Treat charged particles
static Float_t eloss; //need to store mip parameters between different steps
- static Double_t in[3];
+ static Double_t in[3];
+ if(gMC->IsTrackEntering() && gMC->TrackCharge() && gMC->CurrentVolID(copy)==fIdPad) //Trackref stored when entering in the pad volume
+ AddTrackReference(gMC->GetStack()->GetCurrentTrackNumber(), AliTrackReference::kHMPID); //for acceptance calculations
if(gMC->TrackCharge() && gMC->CurrentVolID(copy)==fIdCell){ //charged particle in amplification gap (fIdCell)
if(gMC->IsTrackEntering()||gMC->IsNewTrack()) { //entering or newly created
eloss=0; //reset Eloss collector
out[1]=0.5*(out[1]+in[1]); //take hit position at the anod plane
out[2]=0.5*(out[2]+in[2]); //>
Float_t xl,yl;AliHMPIDParam::Instance()->Mars2Lors(copy,out,xl,yl); //take LORS position
- if ( yl < 0 ) Printf("-------------------> SUPER PROBLEM CHARGED>>> Ch: %d, x[]: %f %f %f (MARS)-> xl: %f yl: %f",copy,out[0],out[1],out[2],xl,yl);
new((*fHits)[fNhits++])AliHMPIDHit(copy,eloss,pid,tid,xl,yl,out); //HIT for MIP, position near anod plane, eloss will be set to Q
- GenFee(eloss); //generate feedback photons
+ if(fDoFeed) GenFee(eloss); //generate feedback photons
}else //just going inside
eloss += gMC->Edep(); //collect this step eloss
}//MIP in GAP
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
void AliHMPIDv2::TestGeom()
{
+//
+// Test method to check geometry
+//
+ //TGeoManager::Import("misaligned_geometry.root");
TGeoManager::Import("geometry.root");
- for(Int_t ch=AliHMPIDDigit::kMinCh;ch<=AliHMPIDDigit::kMaxCh;ch++)
+ for(Int_t ch=AliHMPIDParam::kMinCh;ch<=AliHMPIDParam::kMaxCh;ch++)
TestPoint(ch,0,0);
+}//TestPoint()
+//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+void AliHMPIDv2::IdealPosition(Int_t iCh,TGeoHMatrix *pMatrix) //ideal position of given chamber
+{
+// Construct ideal position matrix for a given chamber
+// Arguments: iCh- chamber ID; pMatrix- pointer to precreated unity matrix where to store the results
+// Returns: none
+ const Double_t kAngHor=19.5; // horizontal angle between chambers 19.5 grad
+ const Double_t kAngVer=20; // vertical angle between chambers 20 grad
+ const Double_t kAngCom=30; // common HMPID rotation with respect to x axis 30 grad
+ const Double_t kTrans[3]={490,0,0}; // center of the chamber is on window-gap surface
+ pMatrix->RotateY(90); // rotate around y since initial position is in XY plane -> now in YZ plane
+ pMatrix->SetTranslation(kTrans); // now plane in YZ is shifted along x
+ switch(iCh){
+ case 0: pMatrix->RotateY(kAngHor); pMatrix->RotateZ(-kAngVer); break; //right and down
+ case 1: pMatrix->RotateZ(-kAngVer); break; //down
+ case 2: pMatrix->RotateY(kAngHor); break; //right
+ case 3: break; //no rotation
+ case 4: pMatrix->RotateY(-kAngHor); break; //left
+ case 5: pMatrix->RotateZ(kAngVer); break; //up
+ case 6: pMatrix->RotateY(-kAngHor); pMatrix->RotateZ(kAngVer); break; //left and up
+ }
+ pMatrix->RotateZ(kAngCom); //apply common rotation in XY plane
}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++