// ************************************************************************** // * 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. * // ************************************************************************** #include "AliHMPIDv2.h" //class header #include "AliHMPIDParam.h" //StepManager() #include "AliHMPIDHit.h" //Hits2SDigs(),StepManager() #include "AliHMPIDDigit.h" //Digits2Raw(), Raw2SDigits() #include "AliRawReader.h" //Raw2SDigits() #include //StepManager() for gMC #include //StepHistory() #include //StepManager(),Hits2SDigits()78.6 #include //Hits2SDigits() #include //Hits2SDigits() #include //StepManager() #include //CreateMaterials() #include //CreateMaterials() #include //CreateGeometry() #include //DefineOpticalProperties() #include //DefineOpticalProperties() #include //IsLostByFresnel() #include //CreateMaterials() #include //CreateMaterials() #include //AddAlignableVolumes() ClassImp(AliHMPIDv2) //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliHMPIDv2::AddAlignableVolumes()const { // Associates the symbolic volume name with the corresponding volume path. Interface method from AliModule invoked from AliMC // Arguments: none // Returns: none 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); for(Int_t i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) { TGeoPNEntry *pPn=gGeoManager->SetAlignableEntry(Form("/HMPID/Chamber%i",i),Form("ALIC_1/Hmp_%i",i)); if(pPn) pPn->SetMatrix(pGm); } } //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliHMPIDv2::CreateMaterials() { // Definition of available HMPID materials // Arguments: none // Returns: none AliDebug(1,"Start v2 HMPID."); //clm update material definition later on from Antonello //data from PDG booklet 2002 density [gr/cm^3] rad len [cm] abs len [cm] Float_t aAir[4]={12,14,16,36} , zAir[4]={6,7,8,18} , wAir[4]={0.000124,0.755267,0.231781,0.012827} , dAir=0.00120479; Int_t nAir=4;//mixture 0.9999999 Float_t aC6F14[2]={ 12.01 , 18.99} , zC6F14[2]={ 6 , 9} , wC6F14[2]={6 , 14} , dC6F14=1.68 ; Int_t nC6F14=-2; Float_t aSiO2[2]={ 28.09 , 15.99} , zSiO2[2]={14 , 8} , wSiO2[2]={1 , 2} , dSiO2=2.64 ; Int_t nSiO2=-2; Float_t aCH4[2]={ 12.01 , 1.01} , zCH4[2]={ 6 , 1} , wCH4[2]={1 , 4} , dCH4=7.17e-4 ; Int_t nCH4=-2; Float_t aCsI[2]={132.90 ,126.90} , zCsI[2]={55 ,53} , wCsI[2]={1 , 1} , dCsI=0.1 ; Int_t nCsI=-2; Float_t aRoha= 12.01 , zRoha= 6 , dRoha= 0.10 , radRoha= 18.80 , absRoha= 86.3/dRoha; //special material- quasi quartz Float_t aCu= 63.55 , zCu= 29 , dCu= 8.96 , radCu= 1.43 , absCu= 134.9/dCu ; Float_t aW=183.84 , zW= 74 , dW= 19.30 , radW= 0.35 , absW= 185.0/dW ; Float_t aAl= 26.98 , zAl= 13 , dAl= 2.70 , radAl= 8.90 , absAl= 106.4/dAl ; Float_t aAr= 39.94 , zAr= 18 , dAr= 1.396e-3, radAr= 14.0 , absAr= 117.2/dAr ; Int_t matId=0; //tmp material id number Int_t unsens = 0, sens=1; //sensitive or unsensitive medium Int_t itgfld = gAlice->Field()->Integ(); //type of field intergration 0 no field -1 user in guswim 1 Runge Kutta 2 helix 3 const field along z Float_t maxfld = gAlice->Field()->Max(); //max field value Float_t tmaxfd = -10.0; //max deflection angle due to magnetic field in one step Float_t deemax = - 0.2; //max fractional energy loss in one step Float_t stemax = - 0.1; //mas step allowed [cm] Float_t epsil = 0.001; //abs tracking precision [cm] Float_t stmin = - 0.001; //min step size [cm] in continius process transport, negative value: choose it automatically AliMixture(++matId,"Air" ,aAir ,zAir ,dAir ,nAir ,wAir ); AliMedium(kAir ,"Air" ,matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); AliMixture(++matId,"C6F14",aC6F14,zC6F14,dC6F14,nC6F14,wC6F14); AliMedium(kC6F14,"C6F14",matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); AliMixture(++matId,"SiO2" ,aSiO2 ,zSiO2 ,dSiO2 ,nSiO2 ,wSiO2 ); AliMedium(kSiO2 ,"SiO2" ,matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); AliMixture(++matId,"CH4" ,aCH4 ,zCH4 ,dCH4 ,nCH4 ,wCH4 ); AliMedium(kCH4 ,"CH4" ,matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); AliMixture(++matId,"CsI" ,aCsI ,zCsI ,dCsI ,nCsI ,wCsI ); AliMedium(kCsI ,"CsI" ,matId, sens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);//sensitive AliMixture(++matId ,"Neo" ,aSiO2 ,zSiO2 ,dSiO2 ,nSiO2 ,wSiO2 ); AliMedium(kNeo,"Neo" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); //clm neoceram AliMaterial(++matId,"Roha",aRoha,zRoha,dRoha,radRoha,absRoha); AliMedium(kRoha,"Roha", matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); //Roha->honeycomb AliMaterial(++matId,"Cu" ,aCu ,zCu ,dCu ,radCu ,absCu ); AliMedium(kCu ,"Cu" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); 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); }//void AliHMPID::CreateMaterials() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliHMPIDv2::CreateGeometry() { //Creates detailed geometry simulation (currently GEANT volumes tree) AliDebug(1,"Start main."); if(!gMC->IsRootGeometrySupported()) return; Double_t cm=1,mm=0.1*cm,um=0.001*mm;//default is cm TGeoMedium *al =gGeoManager->GetMedium("HMPID_Al"); TGeoMedium *ch4 =gGeoManager->GetMedium("HMPID_CH4"); TGeoMedium *roha =gGeoManager->GetMedium("HMPID_Roha"); TGeoMedium *neoc =gGeoManager->GetMedium("HMPID_Neo"); TGeoMedium *c6f14=gGeoManager->GetMedium("HMPID_C6F14"); TGeoMedium *sio2 =gGeoManager->GetMedium("HMPID_SiO2"); TGeoMedium *cu =gGeoManager->GetMedium("HMPID_Cu"); TGeoMedium *w =gGeoManager->GetMedium("HMPID_W"); TGeoMedium *csi =gGeoManager->GetMedium("HMPID_CsI"); TGeoMedium *ar =gGeoManager->GetMedium("HMPID_Ar"); 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); }else{ for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){//place 7 chambers TGeoHMatrix *pMatrix=new TGeoHMatrix; 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 *cov=gGeoManager->MakeBox ("Hcov",al , 1419*mm/2 , 1378.00*mm/2 , 0.5*mm/2); TGeoVolume *hon=gGeoManager->MakeBox ("Hhon",roha , 1359*mm/2 , 1318.00*mm/2 , 49.5*mm/2); TGeoVolume *rad=gGeoManager->MakeBox ("Hrad",c6f14, 1330*mm/2 , 413.00*mm/2 , 24.0*mm/2); //2011P1 TGeoVolume *neo=gGeoManager->MakeBox ("Hneo",neoc , 1330*mm/2 , 413.00*mm/2 , 4.0*mm/2); TGeoVolume *win=gGeoManager->MakeBox ("Hwin",sio2 , 1330*mm/2 , 413.00*mm/2 , 5.0*mm/2); TGeoVolume *si1=gGeoManager->MakeBox ("Hsi1",sio2 , 1330*mm/2 , 5.00*mm/2 , 15.0*mm/2); TGeoVolume *si2=gGeoManager->MakeBox ("Hsi2",neoc , 10*mm/2 , 403.00*mm/2 , 15.0*mm/2); TGeoVolume *spa=gGeoManager->MakeTube("Hspa",sio2 , 0*mm , 5.00*mm , 15.0*mm/2); TGeoVolume *fr4=gGeoManager->MakeBox ("Hfr4",ch4 , 1407*mm/2 , 1366.00*mm/2 , 15.0*mm/2);//2043P1 TGeoVolume *f4a=gGeoManager->MakeBox ("Hf4a",al , 1407*mm/2 , 1366.00*mm/2 , 10.0*mm/2); TGeoVolume *f4i=gGeoManager->MakeBox ("Hf4i",ch4 , 1323*mm/2 , 1296.00*mm/2 , 10.0*mm/2); 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 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 *fr1perUpSma=gGeoManager->MakeBox ("Hfr1perUpSma",ch4,35*mm/2,(1385-37-2*35)*mm/2,10*mm/2); TGeoVolume *fr1perDowBig=gGeoManager->MakeBox ("Hfr1perDowBig",ch4,1389*mm/2,46*mm/2,2.3*mm/2); TGeoVolume *fr1perDowSma=gGeoManager->MakeBox ("Hfr1perDowSma",ch4,46*mm/2,(1385-37-2*46)*mm/2,2.3*mm/2); TGeoVolume *ppf=gGeoManager->MakeBox ("Hppf",al , 648*mm/2 , 411.00*mm/2 , 38.3*mm/2);//2001P2 TGeoVolume *lar=gGeoManager->MakeBox ("Hlar",ar , 181*mm/2 , 89.25*mm/2 , 38.3*mm/2);//2001P2 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 // | | ______ ____ ______ | | // | | | | | * | | | |->3xHrad (virtual) --->1xHneo (real) 2011P1 // | |50.5mm| |24mm| * |45.5mm| | | |-->1xHwin (real) 2011P1 // | | | | | * | | | | |-->2xHsi1 (real) 2011P1 // | | | |____| * |______| | | |-->2xHsi2 (real) 2011P1 // | | | ____ * ______ | | |->30xHspa (real) 2011P1 // | | | | | * | | | | // | | | | | * | | | |->1xHfr4 (vitual) --->1xHf4a (real)---->1xHf4i(virtual) 2043P1 // | | sb | | rad| * | | | | |-->322xHcol (real) 2043P1 // | | | |____| * |______| | | // | | | ____ * ______ | |->1xHfr1 (real) --> 6xHppf(real) ---->8xHlar (virtual) 2001P1 // | | | | | * | | | | |--->8xHsmo (virtual) 2001P1 // | | | | | * | | | | // | | | | | * | | | |-> 6xHgap (virtual) --->48xHrow (virtual) -->80xHcel (virtual) -->4xHcat (real) from p84 TDR // | |______| |____| * |______| | |-->2xHano (real) from p84 TDR // |____________________________________| |-->1xHpad (real) from p84 TDR // --->Z hmp->AddNode(sbo ,1,new TGeoTranslation( 0*mm, 0*mm, -73.75*mm)); //p.84 TDR sbo->AddNode(hon ,1,new TGeoTranslation( 0*mm,0*mm, 0*mm)); //2072P1 sbo->AddNode(cov ,1,new TGeoTranslation( 0*mm,0*mm, +25*mm)); sbo->AddNode(cov ,2,new TGeoTranslation( 0*mm,0*mm, -25*mm)); hmp->AddNode(rad,2,new TGeoTranslation( 0*mm,+434*mm, -12.00*mm)); hmp->AddNode(rad,1,new TGeoTranslation( 0*mm, 0*mm, -12.00*mm)); hmp->AddNode(rad,0,new TGeoTranslation( 0*mm,-434*mm, -12.00*mm)); rad->AddNode(neo,1,new TGeoTranslation( 0*mm, 0*mm, -10.0*mm)); rad->AddNode(win,1,new TGeoTranslation( 0*mm, 0*mm, 9.5*mm)); rad->AddNode(si1,1,new TGeoTranslation( 0*mm,-204*mm, -0.5*mm)); rad->AddNode(si1,2,new TGeoTranslation( 0*mm,+204*mm, -0.5*mm)); rad->AddNode(si2,1,new TGeoTranslation(-660*mm, 0*mm, -0.5*mm)); rad->AddNode(si2,2,new TGeoTranslation(+660*mm, 0*mm, -0.5*mm)); for(Int_t i=0;i<3;i++) for(Int_t j=0;j<10;j++) rad->AddNode(spa,10*i+j,new TGeoTranslation(-1330*mm/2+116*mm+j*122*mm,(i-1)*105*mm,-0.5*mm)); hmp->AddNode(fr4,1,new TGeoTranslation( 0*mm, 0*mm, 9.00*mm)); //p.84 TDR for(int i=1;i<=322;i++) fr4->AddNode(col,i,new TGeoCombiTrans( 0*mm, -1296/2*mm+i*4*mm,-5*mm,rot)); //F4 2043P1 fr4->AddNode(f4a,1,new TGeoTranslation( 0*mm,0*mm, 2.5*mm)); f4a->AddNode(f4i,1,new TGeoTranslation( 0*mm,0*mm, 0*mm)); hmp->AddNode(sec,4,new TGeoTranslation(-335*mm,+433*mm, 78.6*mm)); hmp->AddNode(sec,5,new TGeoTranslation(+335*mm,+433*mm, 78.6*mm)); 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)); 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)); cel->AddNode(cat,3,new TGeoCombiTrans (0, -1.05*mm , -2.70*mm , rot)); cel->AddNode(ano,2,new TGeoCombiTrans (0, -2.00*mm , -0.29*mm , rot)); cel->AddNode(cat,4,new TGeoCombiTrans (0, -3.15*mm , -2.70*mm , rot)); cel->AddNode(pad,1,new TGeoTranslation(0, 0.00*mm , 2.25*mm)); //1 pad hmp->AddNode(fr1,1,new TGeoTranslation(0.,0.,(80.+1.7)*mm+58.3*mm/2.)); fr1->AddNode(fr1up,1,new TGeoTranslation(0.,0.,(58.3*mm-20.00*mm)/2.)); fr1->AddNode(fr1perUpBig,0,new TGeoTranslation(0.,(1385-37-35)*mm/2.,(58.3*mm-20.00*2*mm-10.0*mm)/2.)); fr1->AddNode(fr1perUpSma,0,new TGeoTranslation((1426-37-35)*mm/2.,0.,(58.3*mm-20.00*2*mm-10.0*mm)/2.)); fr1->AddNode(fr1perUpBig,1,new TGeoTranslation(0.,-(1385-37-35)*mm/2.,(58.3*mm-20.00*2*mm-10.0*mm)/2.)); fr1->AddNode(fr1perUpSma,1,new TGeoTranslation(-(1426-37-35)*mm/2.,0.,(58.3*mm-20.00*2*mm-10.0*mm)/2.)); fr1->AddNode(fr1perDowBig,0,new TGeoTranslation(0.,(1385-37-46)*mm/2.,(-58.3*mm+2.3*mm)/2.)); fr1->AddNode(fr1perDowSma,0,new TGeoTranslation((1426-37-46)*mm/2.,0.,(-58.3*mm+2.3*mm)/2.)); fr1->AddNode(fr1perDowBig,1,new TGeoTranslation(0.,-(1385-37-46)*mm/2.,(-58.3*mm+2.3*mm)/2.)); fr1->AddNode(fr1perDowSma,1,new TGeoTranslation(-(1426-37-46)*mm/2.,0.,(-58.3*mm+2.3*mm)/2.)); fr1->AddNode(ppf,4,new TGeoTranslation(-335*mm,433*mm,(-58.3+38.3)*mm/2.)); fr1->AddNode(ppf,5,new TGeoTranslation(335*mm,433*mm,(-58.3+38.3)*mm/2.)); fr1->AddNode(ppf,2,new TGeoTranslation(-335*mm,0.,(-58.3+38.3)*mm/2.)); fr1->AddNode(ppf,3,new TGeoTranslation(335*mm,0.,(-58.3+38.3)*mm/2.)); fr1->AddNode(ppf,0,new TGeoTranslation(-335*mm,-433*mm,(-58.3+38.3)*mm/2.)); fr1->AddNode(ppf,1,new TGeoTranslation(335*mm,-433*mm,(-58.3+38.3)*mm/2.)); // ^ Y single cell 5.5mm CH4 = 1*mm CsI + 4.45*mm CsI x cath +0.05*mm safety margin // | ______________________________ // | | | ^ || // | | 1.05mm || // 2.2*mm| xxxxxxxxxxxxxxxxxxxxxxxxxxxx |-- 50um x || cat shift x=0mm , y= 3.15mm , z=-2.70mm // | | || // | | || // __ | .......................... | 2.1mm 20un . || ano shift x=0mm , y= 2.00mm , z=-0.29mm // | | || // | | || // | xxxxxxxxxxxxxxxxxxxxxxxxxxxx |-- x || cat shift x=0mm , y= 1.05mm , z=-2.70mm // | | || // | | 8.4mm || // 4*mm | | 2.1mm || pad shift x=0mm , y= 0.00mm , z=2.25*mm // | | || // | | || // | xxxxxxxxxxxxxxxxxxxxxxxxxxxx |-- x || cat shift x=0mm , y=-1.05mm , z=-2.70mm // | | || // | | || // __ | .......................... | 2.1mm . 2.04mm|| ano shift x=0mm , y=-2.00mm , z=-0.29mm // | | || // | | || // | xxxxxxxxxxxxxxxxxxxxxxxxxxxx |-- x 4.45mm || cat shift x=0mm , y=-3.15mm , z=-2.70mm // 2.2*mm| | || // | | 1.05mm || // |______________________________| v || // < 8 mm > // ----->X ----->Z ppf->AddNode(lar,0,new TGeoTranslation(-224.5*mm,-151.875*mm, 0.*mm)); ppf->AddNode(lar,1,new TGeoTranslation(-224.5*mm,- 50.625*mm, 0.*mm)); ppf->AddNode(lar,2,new TGeoTranslation(-224.5*mm,+ 50.625*mm, 0.*mm)); ppf->AddNode(lar,3,new TGeoTranslation(-224.5*mm,+151.875*mm, 0.*mm)); ppf->AddNode(lar,4,new TGeoTranslation(+224.5*mm,-151.875*mm, 0.*mm)); ppf->AddNode(lar,5,new TGeoTranslation(+224.5*mm,- 50.625*mm, 0.*mm)); ppf->AddNode(lar,6,new TGeoTranslation(+224.5*mm,+ 50.625*mm, 0.*mm)); ppf->AddNode(lar,7,new TGeoTranslation(+224.5*mm,+151.875*mm, 0.*mm)); ppf->AddNode(smo,0,new TGeoTranslation(- 65.0*mm,-151.875*mm, 0.*mm)); ppf->AddNode(smo,1,new TGeoTranslation(- 65.0*mm,- 50.625*mm, 0.*mm)); ppf->AddNode(smo,2,new TGeoTranslation(- 65.0*mm,+ 50.625*mm, 0.*mm)); ppf->AddNode(smo,3,new TGeoTranslation(- 65.0*mm,+151.875*mm, 0.*mm)); ppf->AddNode(smo,4,new TGeoTranslation(+ 65.0*mm,-151.875*mm, 0.*mm)); ppf->AddNode(smo,5,new TGeoTranslation(+ 65.0*mm,- 50.625*mm, 0.*mm)); 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() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliHMPIDv2::Init() { // This methode defines ID for sensitive volumes, i.e. such geometry volumes for which there are if(gMC->CurrentVolID()==XXX) statements in StepManager() // Arguments: none // Returns: none AliDebug(1,"Start v2 HMPID."); fIdPad = gMC->VolId("Hpad"); fIdCell = gMC->VolId("Hcel"); AliDebug(1,"Stop v2 HMPID."); } //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliHMPIDv2::DefineOpticalProperties() { // Optical properties definition. 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 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 *pRaAF=new TF1("HabsRad","(x<7.8)*(gaus+gaus(3))+(x>=7.8)*0.0001" ,emin,emax); //fit from DiMauro data 28.10.03 pRaAF->SetParameters(3.20491e16,-0.00917890,0.742402,3035.37,4.81171,0.626309); TF1 *pWiAF=new TF1("HabsWin","(x<8.2)*(818.8638-301.0436*x+36.89642*x*x-1.507555*x*x*x)+(x>=8.2)*0.0001" ,emin,emax); //fit from DiMauro data 28.10.03 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;iEval(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)[kCH4] , kNbins, aEckov, aAbsGap , aQeAll , aIdxGap ); gMC->SetCerenkov((*fIdtmed)[kCu] , kNbins, aEckov, aAbsMet , aQeAll , aIdxMet ); 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; } //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Bool_t AliHMPIDv2::IsLostByFresnel() { // Calculate probability for the photon to be lost by Fresnel reflection. TLorentzVector p4; Double_t mom[3],localMom[3]; gMC->TrackMomentum(p4); mom[0]=p4(1); mom[1]=p4(2); mom[2]=p4(3); localMom[0]=0; localMom[1]=0; localMom[2]=0; gMC->Gmtod(mom,localMom,2); Double_t localTc = localMom[0]*localMom[0]+localMom[2]*localMom[2]; Double_t localTheta = TMath::ATan2(TMath::Sqrt(localTc),localMom[1]); Double_t cotheta = TMath::Abs(TMath::Cos(localTheta)); if(gMC->GetRandom()->Rndm() < Fresnel(p4.E()*1e9,cotheta,1)){ AliDebug(1,"Photon lost"); return kTRUE; }else return kFALSE; }//IsLostByFresnel() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliHMPIDv2::GenFee(Float_t qtot) { // Generate FeedBack photons for the current particle. To be invoked from StepManager(). // eloss=0 means photon so only pulse height distribution is to be analysed. TLorentzVector x4; gMC->TrackPosition(x4); Int_t iNphotons=gMC->GetRandom()->Poisson(0.02*qtot); //# of feedback photons is proportional to the charge of hit AliDebug(1,Form("N photons=%i",iNphotons)); Int_t j; Float_t cthf, phif, enfp = 0, sthf, e1[3], e2[3], e3[3], vmod, uswop,dir[3], phi,pol[3], mom[4]; //Generate photons for(Int_t i=0;iGetRandom()->RndmArray(2,ranf); //Sample direction cthf=ranf[0]*2-1.0; if(cthf<0) continue; sthf = TMath::Sqrt((1 - cthf) * (1 + cthf)); phif = ranf[1] * 2 * TMath::Pi(); if(Double_t randomNumber=gMC->GetRandom()->Rndm()<=0.57) enfp = 7.5e-9; else if(randomNumber<=0.7) enfp = 6.4e-9; else enfp = 7.9e-9; dir[0] = sthf * TMath::Sin(phif); dir[1] = cthf; dir[2] = sthf * TMath::Cos(phif); gMC->Gdtom(dir, mom, 2); mom[0]*=enfp; mom[1]*=enfp; mom[2]*=enfp; mom[3] = TMath::Sqrt(mom[0]*mom[0]+mom[1]*mom[1]+mom[2]*mom[2]); // Polarisation e1[0]= 0; e1[1]=-dir[2]; e1[2]= dir[1]; e2[0]=-dir[1]; e2[1]= dir[0]; e2[2]= 0; e3[0]= dir[1]; e3[1]= 0; e3[2]=-dir[0]; vmod=0; for(j=0;j<3;j++) vmod+=e1[j]*e1[j]; if (!vmod) for(j=0;j<3;j++) { uswop=e1[j]; e1[j]=e3[j]; e3[j]=uswop; } vmod=0; for(j=0;j<3;j++) vmod+=e2[j]*e2[j]; if (!vmod) for(j=0;j<3;j++) { uswop=e2[j]; e2[j]=e3[j]; e3[j]=uswop; } vmod=0; for(j=0;j<3;j++) vmod+=e1[j]*e1[j]; vmod=TMath::Sqrt(1/vmod); for(j=0;j<3;j++) e1[j]*=vmod; vmod=0; for(j=0;j<3;j++) vmod+=e2[j]*e2[j]; vmod=TMath::Sqrt(1/vmod); for(j=0;j<3;j++) e2[j]*=vmod; phi = gMC->GetRandom()->Rndm()* 2 * TMath::Pi(); for(j=0;j<3;j++) pol[j]=e1[j]*TMath::Sin(phi)+e2[j]*TMath::Cos(phi); gMC->Gdtom(pol, pol, 2); Int_t outputNtracksStored; gAlice->GetMCApp()->PushTrack(1, //transport gAlice->GetMCApp()->GetCurrentTrackNumber(),//parent track 50000051, //PID mom[0],mom[1],mom[2],mom[3], //track momentum x4.X(),x4.Y(),x4.Z(),x4.T(), //track origin pol[0],pol[1],pol[2], //polarization kPFeedBackPhoton, //process ID outputNtracksStored, //on return how many new photons stored on stack 1.0); //weight }//feedbacks loop AliDebug(1,"Stop."); }//GenerateFeedbacks() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliHMPIDv2::Hits2SDigits() { // Interface method ivoked from AliSimulation to create a list of sdigits corresponding to list of hits. Every hit generates one or more sdigits. // Arguments: none // Returns: none AliDebug(1,"Start."); for(Int_t iEvt=0;iEvt < GetLoader()->GetRunLoader()->GetNumberOfEvents();iEvt++){ //events loop GetLoader()->GetRunLoader()->GetEvent(iEvt); //get next event if(!GetLoader()->TreeH()) {GetLoader()->LoadHits(); } if(!GetLoader()->TreeS()) {GetLoader()->MakeTree("S"); MakeBranch("S");}//to for(Int_t iEnt=0;iEntTreeH()->GetEntries();iEnt++){//prims loop GetLoader()->TreeH()->GetEntry(iEnt); Hit2Sdi(Hits(),SdiLst()); }//prims loop GetLoader()->TreeS()->Fill(); GetLoader()->WriteSDigits("OVERWRITE"); SdiReset(); }//events loop GetLoader()->UnloadHits(); GetLoader()->UnloadSDigits(); AliDebug(1,"Stop."); }//Hits2SDigits() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliHMPIDv2::Hit2Sdi(TClonesArray *pHitLst,TClonesArray *pSdiLst) { // Converts list of hits to list of sdigits. // Arguments: pHitLst - list of hits provided not empty // pSDigLst - list of sdigits where to store the results // Returns: none for(Int_t iHit=0;iHitGetEntries();iHit++){ //hits loop AliHMPIDHit *pHit=(AliHMPIDHit*)pHitLst->At(iHit); //get pointer to current hit pHit->Hit2Sdi(pSdiLst); //convert this hit to list of sdigits }//hits loop loop }//Hits2Sdi() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliHMPIDv2::Digits2Raw() { // Interface method invoked by AliSimulation to create raw data streams from digits. Events loop is done in AliSimulation // Arguments: none // Returns: none AliDebug(1,"Start."); GetLoader()->LoadDigits(); TTree * treeD = GetLoader()->TreeD(); if(!treeD) { AliError("No digits tree!"); return; } treeD->GetEntry(0); AliHMPIDDigit::WriteRaw(DigLst()); GetLoader()->UnloadDigits(); AliDebug(1,"Stop."); }//Digits2Raw() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Float_t AliHMPIDv2::Fresnel(Float_t ene,Float_t pdoti, Bool_t pola) { // Correction for Fresnel ??????????? // Arguments: ene - photon energy [GeV], // PDOTI=COS(INC.ANG.), PDOTR=COS(POL.PLANE ROT.ANG.) // Returns: Float_t en[36] = {5.0,5.1,5.2,5.3,5.4,5.5,5.6,5.7,5.8,5.9,6.0,6.1,6.2, 6.3,6.4,6.5,6.6,6.7,6.8,6.9,7.0,7.1,7.2,7.3,7.4,7.5,7.6,7.7, 7.8,7.9,8.0,8.1,8.2,8.3,8.4,8.5}; Float_t csin[36] = {2.14,2.21,2.33,2.48,2.76,2.97,2.99,2.59,2.81,3.05, 2.86,2.53,2.55,2.66,2.79,2.96,3.18,3.05,2.84,2.81,2.38,2.11, 2.01,2.13,2.39,2.73,3.08,3.15,2.95,2.73,2.56,2.41,2.12,1.95, 1.72,1.53}; Float_t csik[36] = {0.,0.,0.,0.,0.,0.196,0.408,0.208,0.118,0.49,0.784,0.543, 0.424,0.404,0.371,0.514,0.922,1.102,1.139,1.376,1.461,1.253,0.878, 0.69,0.612,0.649,0.824,1.347,1.571,1.678,1.763,1.857,1.824,1.824, 1.714,1.498}; Float_t xe=ene; Int_t j=Int_t(xe*10)-49; Float_t cn=csin[j]+((csin[j+1]-csin[j])/0.1)*(xe-en[j]); Float_t ck=csik[j]+((csik[j+1]-csik[j])/0.1)*(xe-en[j]); //FORMULAE FROM HANDBOOK OF OPTICS, 33.23 OR //W.R. HUNTER, J.O.S.A. 54 (1964),15 , J.O.S.A. 55(1965),1197 Float_t sinin=TMath::Sqrt(1-pdoti*pdoti); Float_t tanin=sinin/pdoti; Float_t c1=cn*cn-ck*ck-sinin*sinin; Float_t c2=4*cn*cn*ck*ck; Float_t aO=TMath::Sqrt(0.5*(TMath::Sqrt(c1*c1+c2)+c1)); Float_t b2=0.5*(TMath::Sqrt(c1*c1+c2)-c1); Float_t rs=((aO-pdoti)*(aO-pdoti)+b2)/((aO+pdoti)*(aO+pdoti)+b2); Float_t rp=rs*((aO-sinin*tanin)*(aO-sinin*tanin)+b2)/((aO+sinin*tanin)*(aO+sinin*tanin)+b2); //CORRECTION FACTOR FOR SURFACE ROUGHNESS //B.J. STAGG APPLIED OPTICS, 30(1991),4113 Float_t sigraf=18.; Float_t lamb=1240/ene; Float_t fresn; Float_t rO=TMath::Exp(-(4*TMath::Pi()*pdoti*sigraf/lamb)*(4*TMath::Pi()*pdoti*sigraf/lamb)); if(pola) { Float_t pdotr=0.8; //DEGREE OF POLARIZATION : 1->P , -1->S fresn=0.5*(rp*(1+pdotr)+rs*(1-pdotr)); } else fresn=0.5*(rp+rs); fresn = fresn*rO; return fresn; }//Fresnel() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliHMPIDv2::Print(Option_t *option)const { // Debug printout TObject::Print(option); }//void AliHMPID::Print(Option_t *option)const //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Bool_t AliHMPIDv2::Raw2SDigits(AliRawReader *pRR) { // 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 if(!sdi.Raw(ddl,w32,pRR)) continue; new((*pSdiLst)[iSdiCnt++]) AliHMPIDDigit(sdi); //add this digit to the tmp list }//raw records loop GetLoader()->TreeS()->Fill(); GetLoader()->WriteSDigits("OVERWRITE");//write out sdigits SdiReset(); return kTRUE; }//Raw2SDigits //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliHMPIDv2::StepCount() { // Count number of ckovs created } //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliHMPIDv2::StepHistory() { // This methode is invoked from StepManager() in order to print out static Int_t iStepN; const char *sParticle; switch(gMC->TrackPid()){ case kProton: sParticle="PROTON" ;break; case kNeutron: sParticle="neutron" ;break; case kGamma: sParticle="gamma" ;break; case 50000050: sParticle="CKOV" ;break; case kPi0: sParticle="Pi0" ;break; case kPiPlus: sParticle="Pi+" ;break; case kPiMinus: sParticle="Pi-" ;break; case kElectron: sParticle="electron" ;break; default: sParticle="not known" ;break; } TString flag="fanny combination"; if(gMC->IsTrackAlive()) if(gMC->IsTrackEntering()) flag="enters to"; else if(gMC->IsTrackExiting()) flag="exits from"; else if(gMC->IsTrackInside()) flag="inside"; 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));} vid=gMC->CurrentVolOffID(3,copy); if(vid) {path.Prepend("-");path.Prepend(gMC->VolName(vid));} Printf("Step %i: %s (%i) %s %s m=%.6f GeV q=%.1f dEdX=%.4f Etot=%.4f",iStepN,sParticle,gMC->TrackPid(),flag.Data(),path.Data(),gMC->TrackMass(),gMC->TrackCharge(),gMC->Edep()*1e9,gMC->Etot()); Double_t gMcTrackPos[3]; gMC->TrackPosition(gMcTrackPos[0],gMcTrackPos[1],gMcTrackPos[2]); Double_t gMcTrackPosLoc[3]; gMC->Gmtod(gMcTrackPos,gMcTrackPosLoc,1); Printf("gMC Track Position (MARS) x: %5.3lf, y: %5.3lf, z: %5.3lf (r: %5.3lf) ---> (LOC) x: %5.3f, y: %5.3f, z: %5.3f",gMcTrackPos[0],gMcTrackPos[1],gMcTrackPos[2],TMath::Sqrt(gMcTrackPos[0]*gMcTrackPos[0]+gMcTrackPos[1]*gMcTrackPos[1]+gMcTrackPos[2]*gMcTrackPos[2]),gMcTrackPosLoc[0],gMcTrackPosLoc[1],gMcTrackPosLoc[2]); Printf("Step %i: tid=%i flags alive=%i disap=%i enter=%i exit=%i inside=%i out=%i stop=%i new=%i", iStepN, gAlice->GetMCApp()->GetCurrentTrackNumber(), gMC->IsTrackAlive(), gMC->IsTrackDisappeared(),gMC->IsTrackEntering(), gMC->IsTrackExiting(), gMC->IsTrackInside(),gMC->IsTrackOut(), gMC->IsTrackStop(), gMC->IsNewTrack()); Float_t a,z,den,rad,abs; a=z=den=rad=abs=-1; Int_t mid=gMC->CurrentMaterial(a,z,den,rad,abs); Printf("Step %i: mid=%i a=%7.2f z=%7.2f den=%9.4f rad=%9.2f abs=%9.2f\n\n",iStepN,mid,a,z,den,rad,abs); TArrayI proc; gMC->StepProcesses(proc); Printf("Processes in this step:"); for ( int i = 0 ; i < proc.GetSize(); i++) { Printf("%s",TMCProcessName[proc.At(i)]); } Printf("End process list"); iStepN++; }//StepHistory() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliHMPIDv2::StepManager() { // Full Step Manager. // Arguments: none // Returns: none // StepHistory(); return; //uncomment to print tracks history // StepCount(); return; //uncomment to count photons Int_t copy; //volume copy aka node //Treat photons 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 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 new((*fHits)[fNhits++])AliHMPIDHit(copy,etot,pid,tid,xl,yl,x); //HIT for photon, position at P, etot will be set to Q 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]; 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 gMC->TrackPosition(in[0],in[1],in[2]); //take position at the entrance }else if(gMC->IsTrackExiting()||gMC->IsTrackStop()||gMC->IsTrackDisappeared()){ //exiting or disappeared eloss +=gMC->Edep(); //take into account last step Eloss gMC->CurrentVolOffID(4,copy); //take current chamber since geometry tree is Hmp-Hsec-Hgap-Hrow-Hcel Int_t tid= gMC->GetStack()->GetCurrentTrackNumber(); //take TID Int_t pid= gMC->TrackPid(); //take PID Double_t out[3]; gMC->TrackPosition(out[0],out[1],out[2]); //take MARS position at exit out[0]=0.5*(out[0]+in[0]); //> 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 new((*fHits)[fNhits++])AliHMPIDHit(copy,eloss,pid,tid,xl,yl,out); //HIT for MIP, position near anod plane, eloss will be set to Q if(fDoFeed) GenFee(eloss); //generate feedback photons }else //just going inside eloss += gMC->Edep(); //collect this step eloss }//MIP in GAP }//StepManager() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliHMPIDv2::TestPoint(Int_t ch,Float_t x,Float_t y) { // Utility method to check the validity of geometry by poviding some crucial points // Arguments: ch,x,y- crucial point definition (cm) in LORS // Returns: none Double_t mars[3]; AliHMPIDParam::Instance()->Lors2Mars(ch,x,y,mars); Printf("(ch=%i,locX=%.2f,locY=%.2f) %s",ch,x,y,gGeoManager->FindNode(mars[0],mars[1],mars[2])->GetName()); }//TestPoint() //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ void AliHMPIDv2::TestGeom() { // // Test method to check geometry // //TGeoManager::Import("misaligned_geometry.root"); TGeoManager::Import("geometry.root"); 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 }