/************************************************************************** * 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 #include #include #include #include #include #include #include #include "AliRICH.h" #include "AliRICHParam.h" #include "AliRICHRecHit1D.h" #include #include #include "AliMC.h" #include ClassImp(AliRICHhit) //__________________________________________________________________________________________________ void AliRICHhit::Print(Option_t*)const { Info("","chamber=%2i, PID=%9i, TID=%6i, eloss=%9.3f eV",fChamber,fPid,fTrack,fEloss*1e9); }//void AliRICHdigit::Print(Option_t *option)const //__________________________________________________________________________________________________ ClassImp(AliRICHdigit) //__________________________________________________________________________________________________ void AliRICHdigit::Print(Option_t*)const { Info("","ID=%6i, chamber=%2i, PadX=%3i, PadY=%3i, Qdc=%4i, TID1=%5i, TID2=%5i, TID3=%5i", Id(),fChamber,fPadX,fPadY,fQdc,fTracks[0],fTracks[1],fTracks[2]); }//void AliRICHdigit::Print(Option_t *option)const //__________________________________________________________________________________________________ ClassImp(AliRICH) //__________________________________________________________________________________________________ // RICH manager class //BEGIN_HTML /*

*/ //END_HTML //__________________________________________________________________________________________________ AliRICH::AliRICH() :AliDetector() {//Default ctor should not contain any new operators fpParam =0; fChambers =0; //AliDetector ctor deals with Hits and Digits fSdigits =0; fNsdigits =0; fDigitsNew =0; for(int i=0;iGetMCApp()->AddHitList(fHits); fSdigits= 0; fDigitsNew= 0; fClusters= 0; fCerenkovs= 0; CreateCerenkovsOld(); gAlice->GetMCApp()->AddHitList(fCerenkovs); fSpecials= 0; CreateSpecialsOld(); fDchambers= 0; //CreateDigitsOld(); fRawClusters=0; //CreateRawClustersOld(); fRecHits1D= 0; //CreateRecos1Old(); fCkovNumber=fFreonProd=0; if(GetDebug())Info("named ctor","Stop."); }//AliRICH::AliRICH(const char *name, const char *title) //__________________________________________________________________________________________________ AliRICH::~AliRICH() {//dtor if(GetDebug()) Info("dtor","Start."); if(fpParam) delete fpParam; if(fChambers) delete fChambers; if(fHits) delete fHits; if(fSdigits) delete fSdigits; if(fDigits) delete fDigits; if(fDigitsNew) {fDigitsNew->Delete(); delete fDigitsNew;} if(fClusters) {fClusters->Delete(); delete fClusters;} if(fCerenkovs) delete fCerenkovs; if(fSpecials) delete fSpecials; if(fDchambers) {fDchambers->Delete(); delete fDchambers;} if(fRawClusters) {fRawClusters->Delete(); delete fRawClusters;} if(fRecHits1D) {fRecHits1D->Delete(); delete fRecHits1D;} if(GetDebug()) Info("dtor","Stop."); }//AliRICH::~AliRICH() //__________________________________________________________________________________________________ void AliRICH::Hits2SDigits() {//Create a list of sdigits corresponding to list of hits. Every hit generates one or more sdigits. if(GetDebug()) Info("Hit2SDigits","Start."); GetLoader()->LoadHits(); for(Int_t iEventN=0;iEventNGetEventsPerRun();iEventN++){//events loop gAlice->GetRunLoader()->GetEvent(iEventN); GetLoader()->MakeTree("S"); MakeBranch("S"); ResetSdigits(); ResetSpecialsOld(); for(Int_t iPrimN=0;iPrimNTreeH()->GetEntries();iPrimN++){//prims loop GetLoader()->TreeH()->GetEntry(iPrimN); for(Int_t i=0;iGetEntries();i++){//specials loop Int_t padx= ((AliRICHSDigit*)Specials()->At(i))->PadX(); Int_t pady= ((AliRICHSDigit*)Specials()->At(i))->PadY(); Int_t qdc= ((AliRICHSDigit*)Specials()->At(i))->QPad(); Int_t hitN= ((AliRICHSDigit*)Specials()->At(i))->HitNumber()-1;//!!! important -1 Int_t chamber=((AliRICHhit*)Hits()->At(hitN))->C(); Int_t track=((AliRICHhit*)Hits()->At(hitN))->GetTrack(); AddSdigit(chamber,padx+Param()->NpadsX()/2,pady+Param()->NpadsY()/2,qdc,track); }//specials loop }//prims loop GetLoader()->TreeS()->Fill(); GetLoader()->WriteSDigits("OVERWRITE"); if(GetDebug()) Info("Hit2SDigits","Event %i processed.",iEventN); }//events loop GetLoader()->UnloadHits(); GetLoader()->UnloadSDigits(); ResetHits(); ResetSdigits(); if(GetDebug()) Info("Hit2SDigits","Stop."); }//void AliRICH::Hits2SDigits() //__________________________________________________________________________________________________ void AliRICH::SDigits2Digits() {//Generate digits from sdigits. if(GetDebug()) Info("SDigits2Digits","Start."); GetLoader()->LoadSDigits(); for(Int_t iEventN=0;iEventNGetEventsPerRun();iEventN++){//events loop gAlice->GetRunLoader()->GetEvent(iEventN); GetLoader()->MakeTree("D"); MakeBranch("D"); //create TreeD with RICH branches ResetSdigits();ResetDigitsOld();//reset lists of sdigits and digits GetLoader()->TreeS()->GetEntry(0); Sdigits()->Sort(); Int_t kBad=-101; Int_t tr[3],q[3],dig[5]; for(Int_t i=0;i<3;i++) tr[i]=q[i]=kBad; for(Int_t i=0;i<5;i++) dig[i]=kBad; Int_t chamber=kBad,id=kBad,iNdigitsPerPad=kBad;//how many sdigits for a given pad for(Int_t i=0;iGetEntries();i++){//sdigits loop (sorted) AliRICHdigit *pSdig=(AliRICHdigit*)Sdigits()->At(i); if(pSdig->Id()==id){//still the same pad iNdigitsPerPad++; dig[2]+=pSdig->Qdc();//sum up qdc if(iNdigitsPerPad<=3) tr[iNdigitsPerPad-1]=pSdig->T(0); else Info("","More then 3 sdigits for the given pad"); }else{//new pad, add the pevious one if(id!=kBad) AddDigitOld(chamber,tr,q,dig); chamber=pSdig->C();dig[0]=pSdig->X();dig[1]=pSdig->Y();dig[2]=pSdig->Qdc();tr[0]=pSdig->T(0);id=pSdig->Id(); iNdigitsPerPad=1;tr[1]=tr[2]=kBad; } }//sdigits loop (sorted) AddDigitOld(chamber,tr,q,dig);//add the last digit GetLoader()->TreeD()->Fill(); GetLoader()->WriteDigits("OVERWRITE"); if(GetDebug()) Info("SDigits2Digits","Event %i processed.",iEventN); }//events loop GetLoader()->UnloadSDigits(); GetLoader()->UnloadDigits(); ResetSdigits(); ResetDigitsOld(); if(GetDebug()) Info("SDigits2Digits","Stop."); }//void AliRICH::SDigits2Digits() //__________________________________________________________________________________________________ void AliRICH::Digits2Reco() {//Generate clusters from digits then generate recos from clusters or digits if(GetDebug()) Info("Digits2reco","Start."); }//void AliRICH::Digits2Reco() //__________________________________________________________________________________________________ void AliRICH::AddRecHit1D(Int_t id, Float_t *rechit, Float_t *photons, Int_t *padsx, Int_t* padsy) {// Add a RICH reconstructed hit to the list TClonesArray &lrec1D = *((TClonesArray*)fRecHits1D->At(id)); new(lrec1D[fNrechits1D[id]++]) AliRICHRecHit1D(id,rechit,photons,padsx,padsy); } //_____________________________________________________________________________ void AliRICH::BuildGeometry() {//Builds a TNode geometry for event display if(GetDebug())Info("BuildGeometry","Start."); TNode *node, *subnode, *top; top=gAlice->GetGeometry()->GetNode("alice"); new TBRIK("S_RICH","S_RICH","void",71.09999,11.5,73.15); Float_t wid=Param()->SectorSizeX(); Float_t len=Param()->SectorSizeY(); new TBRIK("PHOTO","PHOTO","void",wid/2,0.1,len/2); for(int i=1;i<=kNCH;i++){ top->cd(); node = new TNode(Form("RICH%i",i),Form("RICH%i",i),"S_RICH",C(i)->X(),C(i)->Y(),C(i)->Z(),C(i)->RotMatrixName()); node->SetLineColor(kRed); node->cd(); subnode = new TNode("PHOTO1","PHOTO1","PHOTO",wid+Param()->DeadZone(),5,len/2+Param()->DeadZone()/2,""); subnode->SetLineColor(kGreen); fNodes->Add(subnode); subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,len/2+Param()->DeadZone()/2,""); subnode->SetLineColor(kGreen); fNodes->Add(subnode); subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-wid-Param()->DeadZone(),5,len/2+Param()->DeadZone()/2,""); subnode->SetLineColor(kGreen); fNodes->Add(subnode); subnode = new TNode("PHOTO1","PHOTO1","PHOTO",wid+Param()->DeadZone(),5,-len/2-Param()->DeadZone()/2,""); subnode->SetLineColor(kGreen); fNodes->Add(subnode); subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,-len/2 -Param()->DeadZone()/2,""); subnode->SetLineColor(kGreen); fNodes->Add(subnode); subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-wid-Param()->DeadZone(),5,-len/2 - Param()->DeadZone()/2,""); subnode->SetLineColor(kGreen); fNodes->Add(subnode); fNodes->Add(node); } if(GetDebug())Info("BuildGeometry","Stop."); }//void AliRICH::BuildGeometry() static Int_t kCSI=6; static Int_t kGAP=9; //______________________________________________________________________________ void AliRICH::CreateMaterials() { // // *** DEFINITION OF AVAILABLE RICH MATERIALS *** // ORIGIN : NICK VAN EIJNDHOVEN // Modified by: N. Colonna (INFN - BARI, Nicola.Colonna@ba.infn.it) // R.A. Fini (INFN - BARI, Rosanna.Fini@ba.infn.it) // R.A. Loconsole (Bari University, loco@riscom.ba.infn.it) // Int_t i; //Photons energy intervals Float_t ppckov[26]; for (i=0;i<26;i++) { ppckov[i] = (Float_t(i)*0.1+5.5)*1e-9; } //Refraction index for quarz Float_t rIndexQuarz[26]; Float_t e1= 10.666; Float_t e2= 18.125; Float_t f1= 46.411; Float_t f2= 228.71; for (i=0;i<26;i++) { Float_t ene=ppckov[i]*1e9; Float_t a=f1/(e1*e1 - ene*ene); Float_t b=f2/(e2*e2 - ene*ene); rIndexQuarz[i] = TMath::Sqrt(1. + a + b ); } //Refraction index for opaque quarz, methane and grid Float_t rIndexOpaqueQuarz[26]; Float_t rIndexMethane[26]; Float_t rIndexGrid[26]; for (i=0;i<26;i++) { rIndexOpaqueQuarz[i]=1; rIndexMethane[i]=1.000444; rIndexGrid[i]=1; } //Absorption index for freon Float_t abscoFreon[26] = {179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 142.9206, 56.64957, 25.58622, 13.95293, 12.03905, 10.42953, 8.804196, 7.069031, 4.461292, 2.028366, 1.293013, .577267, .40746, .334964, 0., 0., 0.}; Float_t abscoQuarz [26] = {105.8, 65.52, 48.58, 42.85, 35.79, 31.262, 28.598, 27.527, 25.007, 22.815, 21.004, 19.266, 17.525, 15.878, 14.177, 11.719, 9.282, 6.62, 4.0925, 2.601, 1.149, .667, .3627, .192, .1497, .10857}; //Absorption index for methane Float_t abscoMethane[26]; for (i=0;i<26;i++) { abscoMethane[i]=AbsoCH4(ppckov[i]*1e9); } //Absorption index for opaque quarz, csi and grid, efficiency for all and grid Float_t abscoOpaqueQuarz[26]; Float_t abscoCsI[26]; Float_t abscoGrid[26]; Float_t efficAll[26]; Float_t efficGrid[26]; for (i=0;i<26;i++) { abscoOpaqueQuarz[i]=1e-5; abscoCsI[i]=1e-4; abscoGrid[i]=1e-4; efficAll[i]=1; efficGrid[i]=1; } //Efficiency for csi Float_t efficCsI[26] = {0.000199999995, 0.000600000028, 0.000699999975, 0.00499999989, 0.00749999983, 0.010125, 0.0242999997, 0.0405000001, 0.0688500032, 0.105299994, 0.121500008, 0.141749993, 0.157949999, 0.162, 0.166050002, 0.167669997, 0.174299985, 0.176789999, 0.179279998, 0.182599992, 0.18592, 0.187579989, 0.189239994, 0.190899998, 0.207499996, 0.215799987}; //FRESNEL LOSS CORRECTION FOR PERPENDICULAR INCIDENCE AND //UNPOLARIZED PHOTONS for (i=0;i<26;i++) { efficCsI[i] = efficCsI[i]/(1.-Fresnel(ppckov[i]*1e9,1.,0)); } /*******************************************End of rich_media.f***************************************/ Float_t rIndexFreon[26]; // --- Photon energy (GeV) // --- Refraction indexes for (i = 0; i < 26; ++i) { rIndexFreon[i] = ppckov[i] * .0172 * 1e9 + 1.177; //rIndexFreon[i] = 1; } Float_t a=0,z=0,den=0,radl=0,absl=0; Float_t tmaxfd=-10.0, deemax=-0.2, stemax=-0.1,epsil=0.001, stmin=-0.001; Int_t isxfld = gAlice->Field()->Integ(); Float_t sxmgmx = gAlice->Field()->Max(); AliMaterial( 1, "Air $",a=14.61,z=7.3, den=0.001205,radl=30420.0,absl=67500);//(Air) AliMedium(1, "DEFAULT MEDIUM AIR$", 1, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin); AliMaterial( 6, "HON", a=12.01,z=6.0, den=0.1, radl=18.8, absl=0); //(C)-equivalent radl AliMedium(2, "HONEYCOMB$", 6, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin); AliMaterial(16, "CSI", a=12.01,z=6.0, den=0.1, radl=18.8, absl=0); //CsI-radl equivalent AliMedium(kCSI, "CSI$", 16, 1, isxfld, sxmgmx,tmaxfd, stemax, deemax, epsil, stmin); AliMaterial(11, "GRI", a=63.54,z=29.0,den=8.96, radl=1.43, absl=0); //anode grid (Cu) AliMedium(7, "GRIGLIA$", 11, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin); AliMaterial(50, "ALUM", a=26.98,z=13.0,den=2.7, radl=8.9, absl=0); //aluminium sheet (Al) AliMedium(10, "ALUMINUM$", 50, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin); AliMaterial(31, "COPPER$", a=63.54,z=29.0,den=8.96, radl=1.4, absl=0); //(Cu) AliMedium(12, "PCB_COPPER", 31, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin); Float_t aQuartz[2]={28.09,16.0}; Float_t zQuartz[2]={14.00, 8.0}; Float_t wmatQuartz[2]={1,2}; AliMixture (20, "QUA",aQuartz,zQuartz,den=2.64,-2, wmatQuartz);//Quarz (SiO2) - trasnparent AliMedium(3, "QUARZO$", 20, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin); AliMixture (21, "QUAO",aQuartz, zQuartz, den=2.64, -2, wmatQuartz);//Quarz (SiO2) - opaque AliMedium(8, "QUARZOO$", 21, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin); Float_t aFreon[2]={12,19}; Float_t zFreon[2]={6,9}; Float_t wmatFreon[2]={6,14}; AliMixture (30, "FRE",aFreon,zFreon,den=1.7,-2,wmatFreon);//Freon (C6F14) AliMedium(4, "FREON$", 30, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin); Float_t aMethane[2]={12.01,1}; Float_t zMethane[2]={6,1}; Float_t wmatMethane[2]={1,4}; AliMixture (40, "MET", aMethane, zMethane, den=7.17e-4,-2, wmatMethane);//methane (CH4) AliMedium(5, "METANO$", 40, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin); AliMixture (41, "METG", aMethane, zMethane, den=7.17e-4, -2, wmatMethane); AliMedium(kGAP, "GAP$", 41, 1, isxfld, sxmgmx,tmaxfd, 0.1, -deemax, epsil, -stmin); Float_t aGlass[5]={12.01, 28.09, 16., 10.8, 23.}; Float_t zGlass[5]={ 6., 14., 8., 5., 11.}; Float_t wGlass[5]={ 0.5, 0.105, 0.355, 0.03, 0.01}; AliMixture (32, "GLASS",aGlass, zGlass, den=1.74, 5, wGlass);//Glass 50%C+10.5%Si+35.5%O+3% + 1% AliMedium(11, "GLASS", 32, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin); Int_t *idtmed = fIdtmed->GetArray()-999; gMC->SetCerenkov(idtmed[1000], 26, ppckov, abscoMethane, efficAll, rIndexMethane); gMC->SetCerenkov(idtmed[1001], 26, ppckov, abscoMethane, efficAll, rIndexMethane); gMC->SetCerenkov(idtmed[1002], 26, ppckov, abscoQuarz, efficAll, rIndexQuarz); gMC->SetCerenkov(idtmed[1003], 26, ppckov, abscoFreon, efficAll, rIndexFreon); gMC->SetCerenkov(idtmed[1004], 26, ppckov, abscoMethane, efficAll, rIndexMethane); gMC->SetCerenkov(idtmed[1005], 26, ppckov, abscoCsI, efficCsI, rIndexMethane); gMC->SetCerenkov(idtmed[1006], 26, ppckov, abscoGrid, efficGrid, rIndexGrid); gMC->SetCerenkov(idtmed[1007], 26, ppckov, abscoOpaqueQuarz, efficAll, rIndexOpaqueQuarz); gMC->SetCerenkov(idtmed[1008], 26, ppckov, abscoMethane, efficAll, rIndexMethane); gMC->SetCerenkov(idtmed[1009], 26, ppckov, abscoGrid, efficGrid, rIndexGrid); gMC->SetCerenkov(idtmed[1010], 26, ppckov, abscoOpaqueQuarz, efficAll, rIndexOpaqueQuarz); }//void AliRICH::CreateMaterials() //__________________________________________________________________________________________________ Float_t AliRICH::Fresnel(Float_t ene,Float_t pdoti, Bool_t pola) { //ENE(EV), PDOTI=COS(INC.ANG.), PDOTR=COS(POL.PLANE ROT.ANG.) 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); }//Float_t AliRICH::Fresnel(Float_t ene,Float_t pdoti, Bool_t pola) //__________________________________________________________________________________________________ Float_t AliRICH::AbsoCH4(Float_t x) { //KLOSCH,SCH4(9),WL(9),EM(9),ALENGTH(31) Float_t sch4[9] = {.12,.16,.23,.38,.86,2.8,7.9,28.,80.}; //MB X 10^22 //Float_t wl[9] = {153.,152.,151.,150.,149.,148.,147.,146.,145}; Float_t em[9] = {8.1,8.158,8.212,8.267,8.322,8.378,8.435,8.493,8.55}; const Float_t kLosch=2.686763E19; // LOSCHMIDT NUMBER IN CM-3 const Float_t kIgas1=100, kIgas2=0, kOxy=10., kWater=5., kPressure=750.,kTemperature=283.; Float_t pn=kPressure/760.; Float_t tn=kTemperature/273.16; // ------- METHANE CROSS SECTION ----------------- // ASTROPH. J. 214, L47 (1978) Float_t sm=0; if (x<7.75) sm=.06e-22; if(x>=7.75 && x<=8.1) { Float_t c0=-1.655279e-1; Float_t c1=6.307392e-2; Float_t c2=-8.011441e-3; Float_t c3=3.392126e-4; sm=(c0+c1*x+c2*x*x+c3*x*x*x)*1.e-18; } if (x> 8.1) { Int_t j=0; while (x<=em[j] && x>=em[j+1]) { j++; Float_t a=(sch4[j+1]-sch4[j])/(em[j+1]-em[j]); sm=(sch4[j]+a*(x-em[j]))*1e-22; } } Float_t dm=(kIgas1/100.)*(1.-((kOxy+kWater)/1.e6))*kLosch*pn/tn; Float_t abslm=1./sm/dm; // ------- ISOBUTHANE CROSS SECTION -------------- // i-C4H10 (ai) abs. length from curves in // Lu-McDonald paper for BARI RICH workshop . // ----------------------------------------------------------- Float_t ai; Float_t absli; if (kIgas2 != 0) { if (x<7.25) ai=100000000.; if(x>=7.25 && x<7.375) ai=24.3; if(x>=7.375) ai=.0000000001; Float_t si = 1./(ai*kLosch*273.16/293.); // ISOB. CRO.SEC.IN CM2 Float_t di=(kIgas2/100.)*(1.-((kOxy+kWater)/1.e6))*kLosch*pn/tn; absli =1./si/di; } else absli=1.e18; // --------------------------------------------------------- // // transmission of O2 // // y= path in cm, x=energy in eV // so= cross section for UV absorption in cm2 // do= O2 molecular density in cm-3 // --------------------------------------------------------- Float_t abslo; Float_t so=0; if(x>=6.0) { if(x>=6.0 && x<6.5) { so=3.392709e-13 * TMath::Exp(2.864104 *x); so=so*1e-18; } if(x>=6.5 && x<7.0) { so=2.910039e-34 * TMath::Exp(10.3337*x); so=so*1e-18; } if (x>=7.0) { Float_t a0=-73770.76; Float_t a1=46190.69; Float_t a2=-11475.44; Float_t a3=1412.611; Float_t a4=-86.07027; Float_t a5=2.074234; so= a0+(a1*x)+(a2*x*x)+(a3*x*x*x)+(a4*x*x*x*x)+(a5*x*x*x*x*x); so=so*1e-18; } Float_t dox=(kOxy/1e6)*kLosch*pn/tn; abslo=1./so/dox; } else abslo=1.e18; // --------------------------------------------------------- // // transmission of H2O // // y= path in cm, x=energy in eV // sw= cross section for UV absorption in cm2 // dw= H2O molecular density in cm-3 // --------------------------------------------------------- Float_t abslw; Float_t b0=29231.65; Float_t b1=-15807.74; Float_t b2=3192.926; Float_t b3=-285.4809; Float_t b4=9.533944; if(x>6.75) { Float_t sw= b0+(b1*x)+(b2*x*x)+(b3*x*x*x)+(b4*x*x*x*x); sw=sw*1e-18; Float_t dw=(kWater/1e6)*kLosch*pn/tn; abslw=1./sw/dw; } else abslw=1.e18; // --------------------------------------------------------- Float_t alength=1./(1./abslm+1./absli+1./abslo+1./abslw); return (alength); } //__________________________________________________________________________________________________ void AliRICH::MakeBranch(Option_t* option) {//Create Tree branches for the RICH. if(GetDebug())Info("MakeBranch","Start with option= %s.",option); const Int_t kBufferSize = 4000; const char *cH = strstr(option,"H"); const char *cD = strstr(option,"D"); const char *cR = strstr(option,"R"); const char *cS = strstr(option,"S"); if(cH&&TreeH()){//H CreateHits(); //branch will be created in AliDetector::MakeBranch CreateCerenkovsOld(); MakeBranchInTree(TreeH(),"RICHCerenkov", &fCerenkovs, kBufferSize,0); CreateSpecialsOld(); MakeBranchInTree(TreeH(),"RICHSpecials", &fSpecials,kBufferSize,0); }//H AliDetector::MakeBranch(option);//this is after cH because we need to guarantee that fHits array is created if(cS&&fLoader->TreeS()){//S CreateSdigits(); MakeBranchInTree(fLoader->TreeS(),"RICH",&fSdigits,kBufferSize,0) ; }//S if(cD&&fLoader->TreeD()){//D CreateDigits(); CreateDigitsOld(); for(int i=0;iTreeD(),Form("%sDigits%d",GetName(),i+1),&((*fDchambers)[i]),kBufferSize,0); MakeBranchInTree(fLoader->TreeD(),Form("%s%d",GetName(),i+1),&((*fDigitsNew)[i]),kBufferSize,0); } }//D if(cR&&fLoader->TreeR()){//R CreateRawClustersOld(); for(int i=0; iTreeR(),Form("%sRawClusters%d",GetName(),i+1), &((*fRawClusters)[i]), kBufferSize, 0); CreateRecos1Old(); for(int i=0; iTreeR(),Form("%sRecHits1D%d",GetName(),i+1),&((*fRecHits1D)[i]),kBufferSize,0); }//R if(GetDebug())Info("MakeBranch","Stop."); }//void AliRICH::MakeBranch(Option_t* option) //__________________________________________________________________________________________________ void AliRICH::SetTreeAddress() {//Set branch address for the Hits and Digits Tree. if(GetDebug())Info("SetTreeAddress","Start."); TBranch *branch; if(fLoader->TreeH()){//H if(GetDebug())Info("SetTreeAddress","tree H is requested."); CreateHits();//branch map will be in AliDetector::SetTreeAddress branch=fLoader->TreeH()->GetBranch("RICHCerenkov"); if(branch){CreateCerenkovsOld(); branch->SetAddress(&fCerenkovs);} branch=fLoader->TreeH()->GetBranch("RICHSpecials"); if(branch){CreateSpecialsOld(); branch->SetAddress(&fSpecials);} }//H AliDetector::SetTreeAddress();//this is after TreeH because we need to guarantee that fHits array is created if(fLoader->TreeS()){//S if(GetDebug())Info("SetTreeAddress","tree S is requested."); branch=fLoader->TreeS()->GetBranch(GetName()); if(branch){CreateSdigits(); branch->SetAddress(&fSdigits);} }//S if(fLoader->TreeD()){//D if(GetDebug())Info("SetTreeAddress","tree D is requested."); for(int i=0;iTreeD()->GetBranch(Form("%s%d",GetName(),i+1)); if(branch){CreateDigits(); branch->SetAddress(&((*fDigitsNew)[i]));} branch=fLoader->TreeD()->GetBranch(Form("%sDigits%d",GetName(),i+1)); if(branch){CreateDigitsOld(); branch->SetAddress(&((*fDchambers)[i]));} }//for }//D if(fLoader->TreeR()){//R if(GetDebug())Info("SetTreeAddress","tree R is requested."); for(int i=0;iTreeR()->GetBranch(Form("%sClusters%d" ,GetName(),i+1)); if(branch){CreateClusters(); branch->SetAddress(&((*fRawClusters)[i]));} } for(int i=0;iTreeR()->GetBranch(Form("%sRawClusters%d" ,GetName(),i+1)); if(branch){CreateRawClustersOld(); branch->SetAddress(&((*fRawClusters)[i]));} branch=fLoader->TreeR()->GetBranch(Form("%sRecHits1D%d",GetName(),i+1)); if(branch){CreateRecos1Old(); branch->SetAddress(&((*fRecHits1D)[i]));} } }//R if(GetDebug())Info("SetTreeAddress","Stop."); }//void AliRICH::SetTreeAddress() //__________________________________________________________________________________________________ void AliRICH::Print(Option_t *option)const { TObject::Print(option); Param()->Dump(); fChambers->Print(option); }//void AliRICH::Print(Option_t *option)const //__________________________________________________________________________________________________ void AliRICH::CreateGeometry() {//Creates detailed geometry simulation (currently GEANT volumes tree) if(GetDebug())Info("CreateGeometry","Start."); //Opaque quartz thickness Float_t oqua_thickness = .5; //CsI dimensions Float_t pcX=Param()->PcSizeX(); Float_t pcY=Param()->PcSizeY(); Int_t *idtmed = fIdtmed->GetArray()-999; Int_t i; Float_t zs; Int_t idrotm[1099]; Float_t par[3]; //External aluminium box par[0]=68.8*kcm;par[1]=13*kcm;par[2]=70.86*kcm; gMC->Gsvolu("RICH", "BOX ", idtmed[1009], par, 3); //Air par[0]=66.3; par[1] = 13; par[2] = 68.35; gMC->Gsvolu("SRIC", "BOX ", idtmed[1000], par, 3); //Air 2 (cutting the lower part of the box) par[0]=1.25; par[1] = 3; par[2] = 70.86; gMC->Gsvolu("AIR2", "BOX ", idtmed[1000], par, 3); //Air 3 (cutting the lower part of the box) par[0]=66.3; par[1] = 3; par[2] = 1.2505; gMC->Gsvolu("AIR3", "BOX ", idtmed[1000], par, 3); //Honeycomb par[0]=66.3;par[1]=0.188; par[2] = 68.35; gMC->Gsvolu("HONE", "BOX ", idtmed[1001], par, 3); //Aluminium sheet par[0]=66.3;par[1]=0.025;par[2]=68.35; gMC->Gsvolu("ALUM", "BOX ", idtmed[1009], par, 3); //par[0] = 66.5; par[1] = .025; par[2] = 63.1; //Quartz par[0]=Param()->QuartzWidth()/2;par[1]=Param()->QuartzThickness()/2;par[2]=Param()->QuartzLength()/2; gMC->Gsvolu("QUAR", "BOX ", idtmed[1002], par, 3); //Spacers (cylinders) par[0]=0.;par[1]=.5;par[2]=Param()->FreonThickness()/2; gMC->Gsvolu("SPAC", "TUBE", idtmed[1002], par, 3); //Feet (freon slabs supports) par[0] = .7; par[1] = .3; par[2] = 1.9; gMC->Gsvolu("FOOT", "BOX", idtmed[1009], par, 3); //Opaque quartz par[0]=Param()->QuartzWidth()/2;par[1]= .2;par[2]=Param()->QuartzLength()/2; gMC->Gsvolu("OQUA", "BOX ", idtmed[1007], par, 3); //Frame of opaque quartz par[0]=Param()->OuterFreonWidth()/2;par[1]=Param()->FreonThickness()/2;par[2]=Param()->OuterFreonLength()/2; gMC->Gsvolu("OQF1", "BOX ", idtmed[1007], par, 3); par[0]=Param()->InnerFreonWidth()/2;par[1]=Param()->FreonThickness()/2;par[2]=Param()->InnerFreonLength()/2; gMC->Gsvolu("OQF2", "BOX ", idtmed[1007], par, 3); //Freon par[0]=Param()->OuterFreonWidth()/2 - oqua_thickness; par[1]=Param()->FreonThickness()/2; par[2]=Param()->OuterFreonLength()/2 - 2*oqua_thickness; gMC->Gsvolu("FRE1", "BOX ", idtmed[1003], par, 3); par[0]=Param()->InnerFreonWidth()/2 - oqua_thickness; par[1]=Param()->FreonThickness()/2; par[2]=Param()->InnerFreonLength()/2 - 2*oqua_thickness; gMC->Gsvolu("FRE2", "BOX ", idtmed[1003], par, 3); //Methane par[0]=pcX/2;par[1]=Param()->GapThickness()/2;par[2]=pcY/2; gMC->Gsvolu("META","BOX ",idtmed[1004], par, 3); //Methane gap par[0]=pcX/2;par[1]=Param()->ProximityGapThickness()/2;par[2]=pcY/2;gMC->Gsvolu("GAP ","BOX ",(*fIdtmed)[kGAP],par,3); //CsI PC par[0]=pcX/2;par[1]=.25;par[2]=pcY/2; gMC->Gsvolu("CSI ", "BOX ", (*fIdtmed)[kCSI], par, 3); //Anode grid par[0] = 0.;par[1] = .001;par[2] = 20.; gMC->Gsvolu("GRID", "TUBE", idtmed[1006], par, 3); //Wire supports //Bar of metal par[0]=pcX/2;par[1]=1.05;par[2]=1.05; gMC->Gsvolu("WSMe", "BOX ", idtmed[1009], par, 3); //Ceramic pick up (base) par[0]=pcX/2;par[1]= .25;par[2]=1.05; gMC->Gsvolu("WSG1", "BOX ", idtmed[1010], par, 3); //Ceramic pick up (head) par[0] = pcX/2;par[1] = .1;par[2] = .1; gMC->Gsvolu("WSG2", "BOX ", idtmed[1010], par, 3); //Aluminium supports for methane and CsI //Short bar par[0]=pcX/2;par[1]=Param()->GapThickness()/2 + .25; par[2] = (68.35 - pcY/2)/2; gMC->Gsvolu("SMSH", "BOX", idtmed[1009], par, 3); //Long bar par[0]=(66.3 - pcX/2)/2;par[1]=Param()->GapThickness()/2+.25;par[2]=pcY/2+68.35-pcY/2; gMC->Gsvolu("SMLG", "BOX", idtmed[1009], par, 3); //Aluminium supports for freon //Short bar par[0] = Param()->QuartzWidth()/2; par[1] = .3; par[2] = (68.35 - Param()->QuartzLength()/2)/2; gMC->Gsvolu("SFSH", "BOX", idtmed[1009], par, 3); //Long bar par[0] = (66.3 - Param()->QuartzWidth()/2)/2; par[1] = .3; par[2] = Param()->QuartzLength()/2 + 68.35 - Param()->QuartzLength()/2; gMC->Gsvolu("SFLG", "BOX", idtmed[1009], par, 3); //PCB backplane par[0] = pcX/2;par[1] = .25; par[2] = pcY/4 -.5025; gMC->Gsvolu("PCB ", "BOX", idtmed[1011], par, 3); //Backplane supports //Aluminium slab par[0] = 33.15;par[1] = 2;par[2] = 21.65; gMC->Gsvolu("BACK", "BOX", idtmed[1009], par, 3); //Big hole par[0] = 9.05; par[1] = 2; par[2] = 4.4625; gMC->Gsvolu("BKHL", "BOX", idtmed[1000], par, 3); //Small hole par[0] = 5.7;par[1] = 2;par[2] = 4.4625; gMC->Gsvolu("BKHS", "BOX", idtmed[1000], par, 3); //Place holes inside backplane support gMC->Gspos("BKHS", 1, "BACK", .8 + 5.7,0., .6 + 4.4625, 0, "ONLY"); gMC->Gspos("BKHS", 2, "BACK", -.8 - 5.7,0., .6 + 4.4625, 0, "ONLY"); gMC->Gspos("BKHS", 3, "BACK", .8 + 5.7,0., -.6 - 4.4625, 0, "ONLY"); gMC->Gspos("BKHS", 4, "BACK", -.8 - 5.7,0., -.6 - 4.4625, 0, "ONLY"); gMC->Gspos("BKHS", 5, "BACK", .8 + 5.7,0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY"); gMC->Gspos("BKHS", 6, "BACK", -.8 - 5.7,0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY"); gMC->Gspos("BKHS", 7, "BACK", .8 + 5.7,0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY"); gMC->Gspos("BKHS", 8, "BACK", -.8 - 5.7,0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY"); gMC->Gspos("BKHL", 1, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., .6 + 4.4625, 0, "ONLY"); gMC->Gspos("BKHL", 2, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., .6 + 4.4625, 0, "ONLY"); gMC->Gspos("BKHL", 3, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., -.6 - 4.4625, 0, "ONLY"); gMC->Gspos("BKHL", 4, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., -.6 - 4.4625, 0, "ONLY"); gMC->Gspos("BKHL", 5, "BACK", .8 + 11.4+ 1.6 + 9.05, 0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY"); gMC->Gspos("BKHL", 6, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY"); gMC->Gspos("BKHL", 7, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY"); gMC->Gspos("BKHL", 8, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY"); //Place material inside RICH gMC->Gspos("SRIC", 1, "RICH", 0.,0., 0., 0, "ONLY"); gMC->Gspos("AIR2", 1, "RICH", 66.3 + 1.2505, 1.276-Param()->GapThickness()/2-Param()->QuartzThickness()-Param()->FreonThickness()- .4 - .6 - .05 - .376 -.5 - 3.35, 0., 0, "ONLY"); gMC->Gspos("AIR2", 2, "RICH", -66.3 - 1.2505,1.276-Param()->GapThickness()/2-Param()->QuartzThickness()-Param()->FreonThickness()- .4 - .6 - .05 - .376 -.5 - 3.35, 0., 0, "ONLY"); gMC->Gspos("AIR3", 1, "RICH", 0., 1.276-Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .05 - .376 -.5 - 3.35, -68.35 - 1.25, 0, "ONLY"); gMC->Gspos("AIR3", 2, "RICH", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .05 - .376 -.5 - 3.35, 68.35 + 1.25, 0, "ONLY"); gMC->Gspos("ALUM", 1, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .05 - .376 -.025, 0., 0, "ONLY"); gMC->Gspos("HONE", 1, "SRIC", 0., 1.276- Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .05 - .188, 0., 0, "ONLY"); gMC->Gspos("ALUM", 2, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .025, 0., 0, "ONLY"); gMC->Gspos("FOOT", 1, "SRIC", 64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, 36.9, 0, "ONLY"); gMC->Gspos("FOOT", 2, "SRIC", 21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3 , 36.9, 0, "ONLY"); gMC->Gspos("FOOT", 3, "SRIC", -21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, 36.9, 0, "ONLY"); gMC->Gspos("FOOT", 4, "SRIC", -64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, 36.9, 0, "ONLY"); gMC->Gspos("FOOT", 5, "SRIC", 64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY"); gMC->Gspos("FOOT", 6, "SRIC", 21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY"); gMC->Gspos("FOOT", 7, "SRIC", -21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY"); gMC->Gspos("FOOT", 8, "SRIC", -64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY"); gMC->Gspos("OQUA", 1, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .2, 0., 0, "ONLY"); // Methane supports gMC->Gspos("SMLG", 1, "SRIC", pcX/2 + (66.3 - pcX/2)/2, 1.276 + .25, 0., 0, "ONLY"); gMC->Gspos("SMLG", 2, "SRIC", - pcX/2 - (66.3 - pcX/2)/2, 1.276 + .25, 0., 0, "ONLY"); gMC->Gspos("SMSH", 1, "SRIC", 0., 1.276 + .25, pcY/2 + (68.35 - pcY/2)/2, 0, "ONLY"); gMC->Gspos("SMSH", 2, "SRIC", 0., 1.276 + .25, - pcY/2 - (68.35 - pcY/2)/2, 0, "ONLY"); //Freon supports Float_t supp_y = 1.276 - Param()->GapThickness()/2- Param()->QuartzThickness() -Param()->FreonThickness() - .2 + .3; //y position of freon supports gMC->Gspos("SFLG", 1, "SRIC", Param()->QuartzWidth()/2 + (66.3 - Param()->QuartzWidth()/2)/2, supp_y, 0., 0, "ONLY"); gMC->Gspos("SFLG", 2, "SRIC", - Param()->QuartzWidth()/2 - (66.3 - Param()->QuartzWidth()/2)/2, supp_y, 0., 0, "ONLY"); gMC->Gspos("SFSH", 1, "SRIC", 0., supp_y, Param()->QuartzLength()/2 + (68.35 - Param()->QuartzLength()/2)/2, 0, "ONLY"); gMC->Gspos("SFSH", 2, "SRIC", 0., supp_y, - Param()->QuartzLength()/2 - (68.35 - Param()->QuartzLength()/2)/2, 0, "ONLY"); AliMatrix(idrotm[1019], 0., 0., 90., 0., 90., 90.); //Place spacers Int_t nspacers = 30; for (i = 0; i < nspacers/3; i++) { zs = -11.6/2 + (TMath::Abs(nspacers/6) - i) * 12.2; gMC->Gspos("SPAC", i, "FRE1", 10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings } for (i = nspacers/3; i < (nspacers*2)/3; i++) { zs = -11.6/2 + (nspacers/3 + TMath::Abs(nspacers/6) - i) * 12.2; gMC->Gspos("SPAC", i, "FRE1", 0, 0., zs, idrotm[1019], "ONLY"); //Original settings } for (i = (nspacers*2)/3; i < nspacers; ++i) { zs = -11.6/2 + ((nspacers*2)/3 + TMath::Abs(nspacers/6) - i) * 12.2; gMC->Gspos("SPAC", i, "FRE1", -10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings } for (i = 0; i < nspacers/3; i++) { zs = -11.6/2 + (TMath::Abs(nspacers/6) - i) * 12.2; gMC->Gspos("SPAC", i, "FRE2", 10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings } for (i = nspacers/3; i < (nspacers*2)/3; i++) { zs = -11.6/2 + (nspacers/3 + TMath::Abs(nspacers/6) - i) * 12.2; gMC->Gspos("SPAC", i, "FRE2", 0, 0., zs, idrotm[1019], "ONLY"); //Original settings } for (i = (nspacers*2)/3; i < nspacers; ++i) { zs = -11.6/2 + ((nspacers*2)/3 + TMath::Abs(nspacers/6) - i) * 12.2; gMC->Gspos("SPAC", i, "FRE2", -10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings } gMC->Gspos("FRE1", 1, "OQF1", 0., 0., 0., 0, "ONLY"); gMC->Gspos("FRE2", 1, "OQF2", 0., 0., 0., 0, "ONLY"); gMC->Gspos("OQF1", 1, "SRIC", Param()->OuterFreonWidth()/2 + Param()->InnerFreonWidth()/2 + 2, 1.276 - Param()->GapThickness()/2- Param()->QuartzThickness() -Param()->FreonThickness()/2, 0., 0, "ONLY"); //Original settings (31.3) gMC->Gspos("OQF2", 2, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()/2, 0., 0, "ONLY"); //Original settings gMC->Gspos("OQF1", 3, "SRIC", - (Param()->OuterFreonWidth()/2 + Param()->InnerFreonWidth()/2) - 2, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()/2, 0., 0, "ONLY"); //Original settings (-31.3) gMC->Gspos("QUAR", 1, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness()/2, 0., 0, "ONLY"); gMC->Gspos("GAP ", 1, "META", 0., Param()->GapThickness()/2 - Param()->ProximityGapThickness()/2 - 0.0001, 0., 0, "ONLY"); gMC->Gspos("META", 1, "SRIC", 0., 1.276, 0., 0, "ONLY"); gMC->Gspos("CSI ", 1, "SRIC", 0., 1.276 + Param()->GapThickness()/2 + .25, 0., 0, "ONLY"); //Wire support placing gMC->Gspos("WSG2", 1, "GAP ", 0., Param()->ProximityGapThickness()/2 - .1, 0., 0, "ONLY"); gMC->Gspos("WSG1", 1, "CSI ", 0., 0., 0., 0, "ONLY"); gMC->Gspos("WSMe", 1, "SRIC ", 0., 1.276 + Param()->GapThickness()/2 + .5 + 1.05, 0., 0, "ONLY"); //Backplane placing gMC->Gspos("BACK", 1, "SRIC ", -33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, 43.3, 0, "ONLY"); gMC->Gspos("BACK", 2, "SRIC ", 33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2 , 43.3, 0, "ONLY"); gMC->Gspos("BACK", 3, "SRIC ", -33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, 0., 0, "ONLY"); gMC->Gspos("BACK", 4, "SRIC ", 33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, 0., 0, "ONLY"); gMC->Gspos("BACK", 5, "SRIC ", 33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, -43.3, 0, "ONLY"); gMC->Gspos("BACK", 6, "SRIC ", -33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, -43.3, 0, "ONLY"); //PCB placing gMC->Gspos("PCB ", 1, "SRIC ", 0., 1.276 + Param()->GapThickness()/2 + .5 + 1.05, pcX/4 + .5025 + 2.5, 0, "ONLY"); gMC->Gspos("PCB ", 2, "SRIC ", 0., 1.276 + Param()->GapThickness()/2 + .5 + 1.05, -pcX/4 - .5025 - 2.5, 0, "ONLY"); //place chambers into mother volume ALIC for(int i=1;i<=kNCH;i++){ AliMatrix(idrotm[1000+i],C(i)->ThetaXd(),C(i)->PhiXd(), C(i)->ThetaYd(),C(i)->PhiYd(), C(i)->ThetaZd(),C(i)->PhiZd()); gMC->Gspos("RICH",i,"ALIC",C(i)->X(),C(i)->Y(),C(i)->Z(),idrotm[1000+i], "ONLY"); } if(GetDebug())Info("CreateGeometry","Stop."); }//void AliRICH::CreateGeometry() //__________________________________________________________________________________________________ void AliRICH::CreateChambers() {//create all RICH Chambers on each call. Previous chambers deleted if(fChambers) delete fChambers; if(GetDebug())Info("CreateChambers","Creating RICH chambers."); fChambers=new TObjArray(kNCH); fChambers->SetOwner(); for(int i=0;iAddAt(new AliRICHChamber(i+1,Param()),i); }//void AliRICH::CreateChambers() //__________________________________________________________________________________________________ void AliRICH::GenerateFeedbacks(Int_t iChamber,Float_t eloss) {// Generate FeedBack photons Int_t j; Float_t cthf, phif, enfp = 0, sthf; Float_t e1[3], e2[3], e3[3]; Float_t vmod, uswop; Float_t dir[3], phi; Float_t pol[3], mom[4]; //Determine number of feedback photons TLorentzVector x4; gMC->TrackPosition(x4); Float_t charge=Param()->TotalCharge(gMC->TrackPid(),eloss,C(iChamber)->G2Ly(x4));//Total Charge Int_t iNphotons=gMC->GetRandom()->Poisson(Param()->AlphaFeedback()*charge); Info("GenerateFeedbacks","N photons=%i",iNphotons); //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, //do not transport gAlice->GetMCApp()->GetCurrentTrackNumber(),//parent track kFeedback, //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,outputNtracksStored,1.0); } }//Int_t AliRICH::FeedBackPhotons() //__________________________________________________________________________________________________