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53fd478b | 1 | // ************************************************************************** |
2 | // * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | // * * | |
4 | // * Author: The ALICE Off-line Project. * | |
5 | // * Contributors are mentioned in the code where appropriate. * | |
6 | // * * | |
7 | // * Permission to use, copy, modify and distribute this software and its * | |
8 | // * documentation strictly for non-commercial purposes is hereby granted * | |
9 | // * without fee, provided that the above copyright notice appears in all * | |
10 | // * copies and that both the copyright notice and this permission notice * | |
11 | // * appear in the supporting documentation. The authors make no claims * | |
12 | // * about the suitability of this software for any purpose. It is * | |
13 | // * provided "as is" without express or implied warranty. * | |
14 | // ************************************************************************** | |
c28632f0 | 15 | |
c28632f0 | 16 | |
0422a446 | 17 | #include "AliRICHv1.h" //class header |
53fd478b | 18 | #include "AliRICHParam.h" |
db910db9 | 19 | #include <TParticle.h> //Hits2SDigits() |
88cb7938 | 20 | #include <TRandom.h> |
db910db9 | 21 | #include <TVirtualMC.h> //StepManager() for gMC |
22 | #include <TPDGCode.h> //StepHistory() | |
23 | #include <AliStack.h> //StepManager(),Hits2SDigits() | |
24 | #include <AliLoader.h> //Hits2SDigits() | |
25 | #include <AliRunLoader.h> //Hits2SDigits() | |
c60862bf | 26 | #include <AliConst.h> |
27 | #include <AliPDG.h> | |
db910db9 | 28 | #include <AliMC.h> //StepManager() |
0422a446 | 29 | #include <AliRawDataHeader.h> //Digits2Raw() |
db910db9 | 30 | #include <AliRun.h> //CreateMaterials() |
31 | #include <AliMagF.h> //CreateMaterials() | |
32 | #include <TGeoManager.h> //CreateGeometry() | |
33 | #include <TMultiGraph.h> //Optics() | |
34 | #include <TGraph.h> //Optics() | |
35 | #include <TLegend.h> //Optics() | |
36 | #include <TCanvas.h> //Optics() | |
37 | #include <TF2.h> //CreateMaterials() | |
38 | #include <AliCDBManager.h> //CreateMaterials() | |
39 | #include <AliCDBEntry.h> //CreateMaterials() | |
40 | ||
d128c9d1 | 41 | ClassImp(AliRICHv1) |
db910db9 | 42 | |
43 | void AliRICHv1::CreateMaterials() | |
44 | { | |
45 | // Definition of available RICH materials | |
46 | // Arguments: none | |
47 | // Returns: none | |
48 | AliDebug(1,"Start v1 RICH."); | |
49 | ||
50 | const Int_t kNbins=30; //number of photon energy points | |
51 | ||
52 | Float_t aAbsC6F14[kNbins]={//New values from A.DiMauro 28.10.03 total 30 | |
53 | 32701.4219, 17996.1141, 10039.7281, 1799.1230, 1799.1231, 1799.1231, 1241.4091, 179.0987, 179.0986, 179.0987, | |
54 | 179.0987, 118.9800, 39.5058, 23.7244, 11.1283, 7.1573, 3.6249, 2.1236, 0.7362, 0.5348, | |
55 | 0.3387, 0.3074, 0.3050, 0.0001, 0.0001, 0.0001, 0.0001, 0.0001, 0.0001, 0.0001}; | |
56 | ||
57 | Float_t aAbsSiO2[kNbins]={//New values from A.DiMauro 28.10.03 total 30 | |
58 | 34.4338, 30.5424, 30.2584, 31.4928, 31.7868, 17.8397, 9.3410, 6.4492, 6.1128, 5.8128, | |
59 | 5.5589, 5.2877, 5.0162, 4.7999, 4.5734, 4.2135, 3.7471, 2.6033, 1.5223, 0.9658, | |
60 | 0.4242, 0.2500, 0.1426, 0.0863, 0.0793, 0.0724, 0.0655, 0.0587, 0.0001, 0.0001}; | |
61 | ||
62 | Float_t aQeCsI[kNbins] = {//New values from A.DiMauro 28.10.03 total 31 the last one cut to provide 30 | |
63 | 0.0002, 0.0006, 0.0007, 0.0010, 0.0049, 0.0073, 0.0104, 0.0519, 0.0936, 0.1299, | |
64 | 0.1560, 0.1768, 0.1872, 0.1976, 0.2142, 0.2288, 0.2434, 0.2599, 0.2673, 0.2808, | |
65 | 0.2859, 0.2954, 0.3016, 0.3120, 0.3172, 0.3224, 0.3266, 0.3328, 0.3359, 0.3390}; //0.3431}; | |
66 | ||
67 | Float_t aQeCsIold[kNbins]={//previous values 26 in total added 0.0001 to the 30 | |
68 | 0.0002, 0.0006, 0.0007, 0.0050, 0.0075, 0.0101, 0.0243, 0.0405, 0.0689, 0.1053, | |
69 | 0.1215, 0.1417, 0.1579, 0.1620, 0.1661, 0.1677, 0.1743, 0.1768, 0.1793, 0.1826, | |
70 | 0.1859, 0.1876, 0.1892, 0.1909, 0.2075, 0.2158, 0.0001, 0.0001, 0.0001, 0.0001 }; | |
71 | ||
72 | // radiator window gas metal | |
73 | Float_t aIdxC6F14[kNbins] , aIdxSiO2[kNbins] , aIdxCH4[kNbins] , aIdx0[kNbins] , aIdx1[kNbins] ; | |
74 | Float_t aAbsCH4[kNbins] , aAbsMet[kNbins] ; | |
75 | Float_t aQe1[kNbins] ; //QE for all but PC | |
76 | Float_t aEckov[kNbins]; //Ckov energy in GeV | |
77 | ||
78 | //Read all the staff from CDB | |
79 | TF2 *pIdxC6F14; | |
80 | AliCDBEntry *pEntry=AliCDBManager::Instance()->Get("RICH/RICHConfig/RefIdxC6F14",0,0,0); //0-0-0 is for simulation | |
81 | if(pEntry){ | |
82 | pIdxC6F14=(TF2*)pEntry->GetObject(); delete pEntry; | |
83 | }else{ | |
84 | AliWarning("No valid calibarion, the hardcoded will be used!"); | |
85 | pIdxC6F14=new TF2("RidxC4F14","sqrt(1+0.554*(1239.84e-9/x)^2/((1239.84e-9/x)^2-5796)-0.0005*(y-20))",5.5e-9,8.5e-9,0,50); //DiMauro mail | |
86 | } | |
87 | ||
88 | Double_t eCkovMin=5.5e-9,eCkovMax=8.5e-9; //in GeV | |
89 | TF1 idxSiO2("RidxSiO2" ,"sqrt(1+46.411/(10.666*10.666-x*x*1e18)+228.71/(18.125*18.125-x*x*1e18))",eCkovMin,eCkovMax); //TDR p.35 | |
90 | ||
91 | ||
92 | for(Int_t i=0;i<kNbins;i++){ | |
93 | aEckov [i] =AliRICHParam::EckovMin()+0.1e-9*i;//Ckov energy in GeV | |
94 | ||
95 | aIdxC6F14 [i] =pIdxC6F14->Eval(aEckov[i],pIdxC6F14->GetUniqueID()); | |
96 | aIdxSiO2 [i] =idxSiO2 .Eval(aEckov[i]); | |
97 | aIdxCH4 [i] =AliRICHParam::IdxCH4 (aEckov[i]); aAbsCH4 [i] =AliRICHParam::AbsCH4 (aEckov[i]); | |
98 | aAbsMet [i] =0.0001; //metal has absorption probability | |
99 | aIdx0 [i] =0; //metal ref idx must be 0 in order to reflect photon | |
100 | aIdx1 [i] =1; //metal ref idx must be 1 in order to apply photon to QE conversion | |
101 | // aQeCsI[i] /= (1.0-Fresnel(aEckov[i]*1e9,1.0,0)) ; //FRESNEL LOSS CORRECTION ????????????? | |
102 | aQe1 [i] =1 ; //QE for all other materials except for PC must be 1. | |
103 | } | |
104 | ||
105 | //data from PDG booklet 2002 density [gr/cm^3] rad len [cm] abs len [cm] | |
106 | 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 | |
107 | Float_t aC6F14[2]={ 12.01 , 18.99} , zC6F14[2]={ 6 , 9} , wC6F14[2]={6 , 14} , dC6F14=1.68 ; Int_t nC6F14=-2; | |
108 | Float_t aSiO2[2]={ 28.09 , 15.99} , zSiO2[2]={14 , 8} , wSiO2[2]={1 , 2} , dSiO2=2.64 ; Int_t nSiO2=-2; | |
109 | Float_t aCH4[2]={ 12.01 , 1.01} , zCH4[2]={ 6 , 1} , wCH4[2]={1 , 4} , dCH4=7.17e-4 ; Int_t nCH4=-2; | |
110 | Float_t aCsI[2]={132.90 ,126.90} , zCsI[2]={55 ,53} , wCsI[2]={1 , 1} , dCsI=0.1 ; Int_t nCsI=-2; | |
111 | Float_t aRoha= 12.01 , zRoha= 6 , dRoha= 0.10 , radRoha= 18.80 , absRoha= 86.3/dRoha; //special material- quazi carbon | |
112 | Float_t aCu= 63.55 , zCu= 29 , dCu= 8.96 , radCu= 1.43 , absCu= 134.9/dCu ; | |
113 | Float_t aW=183.84 , zW= 74 , dW= 19.30 , radW= 0.35 , absW= 185.0/dW ; | |
114 | Float_t aAl= 26.98 , zAl= 13 , dAl= 2.70 , radAl= 8.90 , absAl= 106.4/dAl ; | |
115 | ||
116 | Int_t matId=0; //tmp material id number | |
117 | Int_t unsens = 0, sens=1; //sensitive or unsensitive medium | |
118 | 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 | |
119 | Float_t maxfld = gAlice->Field()->Max(); //max field value | |
120 | Float_t tmaxfd = -10.0; //max deflection angle due to magnetic field in one step | |
121 | Float_t deemax = - 0.2; //max fractional energy loss in one step | |
122 | Float_t stemax = - 0.1; //mas step allowed [cm] | |
123 | Float_t epsil = 0.001; //abs tracking precision [cm] | |
124 | Float_t stmin = - 0.001; //min step size [cm] in continius process transport, negative value: choose it automatically | |
125 | AliMixture(++matId,"Air" ,aAir ,zAir ,dAir ,nAir ,wAir ); AliMedium(kAir ,"Air" ,matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); | |
126 | AliMixture(++matId,"C6F14",aC6F14,zC6F14,dC6F14,nC6F14,wC6F14); AliMedium(kC6F14,"C6F14",matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); | |
127 | AliMixture(++matId,"SiO2" ,aSiO2 ,zSiO2 ,dSiO2 ,nSiO2 ,wSiO2 ); AliMedium(kSiO2 ,"SiO2" ,matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); | |
128 | AliMixture(++matId,"CH4" ,aCH4 ,zCH4 ,dCH4 ,nCH4 ,wCH4 ); AliMedium(kCH4 ,"CH4" ,matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); | |
129 | AliMixture(++matId,"CsI" ,aCsI ,zCsI ,dCsI ,nCsI ,wCsI ); AliMedium(kCsI ,"CsI" ,matId, sens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);//sensitive | |
130 | ||
131 | AliMaterial(++matId,"Roha",aRoha,zRoha,dRoha,radRoha,absRoha); AliMedium(kRoha,"Roha", matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); | |
132 | AliMaterial(++matId,"Cu" ,aCu ,zCu ,dCu ,radCu ,absCu ); AliMedium(kCu ,"Cu" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); | |
133 | AliMaterial(++matId,"W" ,aW ,zW ,dW ,radW ,absW ); AliMedium(kW ,"W" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); | |
134 | AliMaterial(++matId,"Al" ,aAl ,zAl ,dAl ,radAl ,absAl ); AliMedium(kAl ,"Al" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); | |
135 | ||
136 | gMC->SetCerenkov((*fIdtmed)[kC6F14] , kNbins, aEckov, aAbsC6F14 , aQe1 , aIdxC6F14 ); | |
137 | gMC->SetCerenkov((*fIdtmed)[kSiO2] , kNbins, aEckov, aAbsSiO2 , aQe1 , aIdxSiO2 ); | |
138 | gMC->SetCerenkov((*fIdtmed)[kCH4] , kNbins, aEckov, aAbsCH4 , aQe1 , aIdxCH4 ); | |
139 | gMC->SetCerenkov((*fIdtmed)[kCu] , kNbins, aEckov, aAbsMet , aQe1 , aIdx0 ); | |
140 | gMC->SetCerenkov((*fIdtmed)[kW] , kNbins, aEckov, aAbsMet , aQe1 , aIdx0 ); //n=0 means reflect photons | |
141 | gMC->SetCerenkov((*fIdtmed)[kCsI] , kNbins, aEckov, aAbsMet , aQeCsI, aIdx1 ); //n=1 means convert photons | |
142 | gMC->SetCerenkov((*fIdtmed)[kAl] , kNbins, aEckov, aAbsMet , aQe1 , aIdx0 ); | |
143 | ||
144 | AliDebug(1,"Stop v1 RICH."); | |
145 | TString ttl=GetTitle(); | |
146 | if(!ttl.Contains("ShowOptics")) return; //do not plot optical curves | |
147 | { | |
148 | const Double_t kWidth=0.25,kHeight=0.2; | |
149 | const Int_t kC6F14Marker=24 , kC6F14Color=kRed; | |
150 | const Int_t kCH4Marker =25 , kCH4Color =kGreen; | |
151 | const Int_t kSiO2M =26 , kSiO2Color =kBlue; | |
152 | const Int_t kCsIMarker = 2 , kCsIColor =kMagenta; | |
153 | ||
154 | //Ref index | |
155 | TGraph *pIdxC6F14=new TGraph(kNbins,aEckov,aIdxC6F14);pIdxC6F14->SetMarkerStyle(kC6F14Marker);pIdxC6F14->SetMarkerColor(kC6F14Color); | |
156 | TGraph *pIdxSiO2 =new TGraph(kNbins,aEckov,aIdxSiO2); pIdxSiO2 ->SetMarkerStyle(kSiO2M) ;pIdxSiO2 ->SetMarkerColor(kSiO2Color); | |
157 | TGraph *pIdxCH4 =new TGraph(kNbins,aEckov,aIdxCH4); pIdxCH4 ->SetMarkerStyle(kCH4Marker) ;pIdxCH4 ->SetMarkerColor(kCH4Color); | |
158 | TMultiGraph *pIdxMG=new TMultiGraph("refidx","Ref index;E_{#check{C}} [GeV]"); TLegend *pIdxLe=new TLegend(0.5,0.21,0.5+kWidth,0.21+kHeight); | |
159 | pIdxMG->Add(pIdxC6F14); pIdxLe->AddEntry(pIdxC6F14,"C6F14" ,"p"); | |
160 | pIdxMG->Add(pIdxSiO2) ; pIdxLe->AddEntry(pIdxSiO2 ,"SiO2" ,"p"); | |
161 | pIdxMG->Add(pIdxCH4) ; pIdxLe->AddEntry(pIdxCH4 ,"CH4" ,"p"); | |
162 | //Absorbtion | |
163 | TGraph *pAbsC6F14=new TGraph(kNbins,aEckov,aAbsC6F14);pAbsC6F14->SetMarkerStyle(kC6F14Marker); pAbsC6F14->SetMarkerColor(kC6F14Color); | |
164 | TGraph *pAbsSiO2 =new TGraph(kNbins,aEckov,aAbsSiO2) ;pAbsSiO2 ->SetMarkerStyle(kSiO2M) ; pAbsSiO2 ->SetMarkerColor(kSiO2Color); | |
165 | TGraph *pAbsCH4 =new TGraph(kNbins,aEckov,aAbsCH4) ;pAbsCH4 ->SetMarkerStyle(kCH4Marker) ; pAbsCH4 ->SetMarkerColor(kCH4Color); | |
166 | ||
167 | TMultiGraph *pAbsMG=new TMultiGraph("abs","Absorption [cm];E_{#check{C}} [GeV]"); TLegend *pAbsLe=new TLegend(0.2,0.15,0.2+kWidth,0.15+kHeight); | |
168 | pAbsMG->Add(pAbsC6F14); pAbsLe->AddEntry(pAbsC6F14, "C6F14" ,"p"); | |
169 | pAbsMG->Add(pAbsSiO2); pAbsLe->AddEntry(pAbsSiO2 , "SiO2" ,"p"); | |
170 | pAbsMG->Add(pAbsCH4); pAbsLe->AddEntry(pAbsCH4 , "CH4" ,"p"); | |
171 | //QE new and old | |
172 | TGraph *pQeCsI =new TGraph(kNbins,aEckov,aQeCsI); pQeCsI ->SetMarkerStyle(kCsIMarker); pQeCsI ->SetMarkerColor(kCsIColor); | |
173 | TGraph *pQeCsIold=new TGraph(kNbins,aEckov,aQeCsIold); pQeCsIold->SetMarkerStyle(kC6F14Marker);pQeCsIold->SetMarkerColor(kC6F14Color); | |
174 | TMultiGraph *pCompMG=new TMultiGraph("qe","QE;E_{#check{C}} [GeV]"); TLegend *pCompLe=new TLegend(0.2,0.6,0.2+kWidth,0.6+kHeight); | |
175 | pCompMG->Add(pQeCsI); pCompLe->AddEntry(pQeCsI, "QE new 30.10.03", "p"); | |
176 | pCompMG->Add(pQeCsIold); pCompLe->AddEntry(pQeCsIold, "QE old 01.01.02", "p"); | |
177 | //transmission | |
178 | Float_t aTrC6F14[kNbins],aTrSiO2[kNbins],aTrCH4[kNbins],aTrTotal[kNbins]; | |
179 | for(Int_t i=0;i<kNbins;i++){//calculate probability for photon to survive during transversing a volume of material with absorption length | |
180 | aTrC6F14[i] =TMath::Exp(-AliRICHParam::RadThick() / (aAbsC6F14[i]+0.0001)); //radiator | |
181 | aTrSiO2[i] =TMath::Exp(-AliRICHParam::WinThick() / (aAbsSiO2[i] +0.0001)); //window | |
182 | aTrCH4[i] =TMath::Exp(-AliRICHParam::Pc2Win() / (aAbsCH4[i] +0.0001)); //from window to PC | |
183 | aTrTotal[i] =aTrC6F14[i]*aTrSiO2[i]*aTrCH4[i]*aQeCsI[i]; | |
184 | } | |
185 | TGraph *pTrC6F14=new TGraph(kNbins,aEckov,aTrC6F14) ;pTrC6F14->SetMarkerStyle(kC6F14Marker);pTrC6F14->SetMarkerColor(kC6F14Color); | |
186 | TGraph *pTrSiO2 =new TGraph(kNbins,aEckov,aTrSiO2) ;pTrSiO2 ->SetMarkerStyle(kSiO2M) ;pTrSiO2 ->SetMarkerColor(kSiO2Color); | |
187 | TGraph *pTrCH4 =new TGraph(kNbins,aEckov,aTrCH4) ;pTrCH4 ->SetMarkerStyle(kCH4Marker) ;pTrCH4 ->SetMarkerColor(kCH4Color); | |
188 | TGraph *pTrTotal=new TGraph(kNbins,aEckov,aTrTotal) ;pTrTotal->SetMarkerStyle(30) ;pTrTotal->SetMarkerColor(kYellow); | |
189 | TMultiGraph *pTrMG=new TMultiGraph("trans","Transmission;E_{#check{C}} [GeV]"); TLegend *pTrLe=new TLegend(0.2,0.4,0.2+kWidth,0.4+kHeight); | |
190 | pTrMG->Add(pQeCsI); pTrLe->AddEntry(pQeCsI, "CsI QE", "p"); | |
191 | pTrMG->Add(pTrC6F14); pTrLe->AddEntry(pTrC6F14, "C6F14" , "p"); | |
192 | pTrMG->Add(pTrSiO2); pTrLe->AddEntry(pTrSiO2, "SiO2" , "p"); | |
193 | pTrMG->Add(pTrCH4); pTrLe->AddEntry(pTrCH4, "CH4" , "p"); | |
194 | pTrMG->Add(pTrTotal); pTrLe->AddEntry(pTrTotal, "total" , "p"); | |
195 | ||
196 | TCanvas *pC=new TCanvas("c1","RICH optics to check",1100,900); pC->Divide(2,2); | |
197 | pC->cd(1); pIdxMG ->Draw("AP"); pIdxLe ->Draw(); //ref idx | |
198 | pC->cd(2); gPad->SetLogy(); pAbsMG ->Draw("AP"); pAbsLe ->Draw(); //absorption | |
199 | pC->cd(3); pCompMG->Draw("AP"); pCompLe->Draw(); //QE | |
200 | pC->cd(4); pTrMG ->Draw("AP"); pTrLe ->Draw(); //transmission | |
201 | } | |
202 | }//void AliRICH::CreateMaterials() | |
3582c1f9 | 203 | //__________________________________________________________________________________________________ |
db910db9 | 204 | void AliRICHv1::CreateGeometry() |
53fd478b | 205 | { |
db910db9 | 206 | //Creates detailed geometry simulation (currently GEANT volumes tree) |
207 | AliDebug(1,"Start main."); | |
208 | if(!gMC->IsRootGeometrySupported()) return; | |
209 | ||
210 | Double_t cm=1,mm=0.1*cm,mkm=0.001*mm,dx,dy,dz;//default is cm | |
211 | ||
212 | TGeoVolume *pRich=gGeoManager->MakeBox("RICH",gGeoManager->GetMedium("RICH_CH4"),dx=(6*mm+1681*mm+6*mm)/2, //main RICH volume | |
213 | dy=(6*mm+1466*mm+6*mm)/2, | |
214 | dz=(80*mm+40*mm)*2/2); //x,y taken from 2033P1 z from p84 TDR | |
215 | const Double_t kAngHor=19.5; // horizontal angle between chambers 19.5 grad | |
216 | const Double_t kAngVer=20; // vertical angle between chambers 20 grad | |
217 | const Double_t kAngCom=30; // common RICH rotation with respect to x axis 30 grad | |
218 | const Double_t trans[3]={490,0,0}; //center of the chamber is on window-gap surface | |
219 | for(Int_t iCh=1;iCh<=7;iCh++){//place 7 chambers | |
220 | TGeoHMatrix *pMatrix=new TGeoHMatrix; | |
221 | pMatrix->RotateY(90); //rotate around y since initial position is in XY plane -> now in YZ plane | |
222 | pMatrix->SetTranslation(trans); //now plane in YZ is shifted along x | |
223 | switch(iCh){ | |
224 | case 1: pMatrix->RotateY(kAngHor); pMatrix->RotateZ(-kAngVer); break; //right and down | |
225 | case 2: pMatrix->RotateZ(-kAngVer); break; //down | |
226 | case 3: pMatrix->RotateY(kAngHor); break; //right | |
227 | case 4: break; //no rotation | |
228 | case 5: pMatrix->RotateY(-kAngHor); break; //left | |
229 | case 6: pMatrix->RotateZ(kAngVer); break; //up | |
230 | case 7: pMatrix->RotateY(-kAngHor); pMatrix->RotateZ(kAngVer); break; //left and up | |
231 | } | |
232 | pMatrix->RotateZ(kAngCom); //apply common rotation in XY plane | |
233 | gGeoManager->GetVolume("ALIC")->AddNode(pRich,iCh,pMatrix); | |
e42a7b46 | 234 | } |
db910db9 | 235 | |
236 | Float_t par[3]; | |
237 | Int_t matrixIdReturn=0; //matrix id returned by AliMatrix | |
238 | //Pad Panel frame 6 sectors | |
239 | par[0]=648*mm/2;par[1]= 411*mm/2;par[2]=40 *mm/2;gMC->Gsvolu("Rppf" ,"BOX ",(*fIdtmed)[kAl] ,par,3);//PPF 2001P2 inner size of the slab by 1mm more | |
240 | par[0]=181*mm/2;par[1]=89.25*mm/2;par[2]=38.3*mm/2;gMC->Gsvolu("RppfLarge","BOX ",(*fIdtmed)[kAir] ,par,3);//large whole | |
241 | par[0]=114*mm/2;par[1]=89.25*mm/2;par[2]=38.3*mm/2;gMC->Gsvolu("RppfSmall","BOX ",(*fIdtmed)[kAir] ,par,3);//small whole | |
242 | par[0]=644*mm/2;par[1]= 407*mm/2;par[2]= 1.7*mm/2;gMC->Gsvolu("Rpc" ,"BOX ",(*fIdtmed)[kCsI] ,par,3);//by 0.2 mm more then actual size (PCB 2006P1) | |
ed3ceb24 | 243 | |
db910db9 | 244 | gMC->Gspos("Rppf",1,"RICH", -335*mm, -433*mm, 8*cm+20*mm, 0,"ONLY");//F1 2040P1 z p.84 TDR |
245 | gMC->Gspos("Rppf",2,"RICH", +335*mm, -433*mm, 8*cm+20*mm, 0,"ONLY"); | |
246 | gMC->Gspos("Rppf",3,"RICH", -335*mm, 0*mm, 8*cm+20*mm, 0,"ONLY"); | |
247 | gMC->Gspos("Rppf",4,"RICH", +335*mm, 0*mm, 8*cm+20*mm, 0,"ONLY"); | |
248 | gMC->Gspos("Rppf",5,"RICH", -335*mm, +433*mm, 8*cm+20*mm, 0,"ONLY"); | |
249 | gMC->Gspos("Rppf",6,"RICH", +335*mm, +433*mm, 8*cm+20*mm, 0,"ONLY"); | |
250 | gMC->Gspos("Rpc" ,1,"Rppf", 0*mm, 0*mm, -19.15*mm, 0,"ONLY");//PPF 2001P2 | |
251 | gMC->Gspos("RppfLarge",1,"Rppf", -224.5*mm, -151.875*mm, 0.85*mm, 0,"ONLY"); | |
252 | gMC->Gspos("RppfLarge",2,"Rppf", -224.5*mm, - 50.625*mm, 0.85*mm, 0,"ONLY"); | |
253 | gMC->Gspos("RppfLarge",3,"Rppf", -224.5*mm, + 50.625*mm, 0.85*mm, 0,"ONLY"); | |
254 | gMC->Gspos("RppfLarge",4,"Rppf", -224.5*mm, +151.875*mm, 0.85*mm, 0,"ONLY"); | |
255 | gMC->Gspos("RppfSmall",1,"Rppf", - 65.0*mm, -151.875*mm, 0.85*mm, 0,"ONLY"); | |
256 | gMC->Gspos("RppfSmall",2,"Rppf", - 65.0*mm, - 50.625*mm, 0.85*mm, 0,"ONLY"); | |
257 | gMC->Gspos("RppfSmall",3,"Rppf", - 65.0*mm, + 50.625*mm, 0.85*mm, 0,"ONLY"); | |
258 | gMC->Gspos("RppfSmall",4,"Rppf", - 65.0*mm, +151.875*mm, 0.85*mm, 0,"ONLY"); | |
259 | gMC->Gspos("RppfSmall",5,"Rppf", + 65.0*mm, -151.875*mm, 0.85*mm, 0,"ONLY"); | |
260 | gMC->Gspos("RppfSmall",6,"Rppf", + 65.0*mm, - 50.625*mm, 0.85*mm, 0,"ONLY"); | |
261 | gMC->Gspos("RppfSmall",7,"Rppf", + 65.0*mm, + 50.625*mm, 0.85*mm, 0,"ONLY"); | |
262 | gMC->Gspos("RppfSmall",8,"Rppf", + 65.0*mm, +151.875*mm, 0.85*mm, 0,"ONLY"); | |
263 | gMC->Gspos("RppfLarge",5,"Rppf", +224.5*mm, -151.875*mm, 0.85*mm, 0,"ONLY"); | |
264 | gMC->Gspos("RppfLarge",6,"Rppf", +224.5*mm, - 50.625*mm, 0.85*mm, 0,"ONLY"); | |
265 | gMC->Gspos("RppfLarge",7,"Rppf", +224.5*mm, + 50.625*mm, 0.85*mm, 0,"ONLY"); | |
266 | gMC->Gspos("RppfLarge",8,"Rppf", +224.5*mm, +151.875*mm, 0.85*mm, 0,"ONLY"); | |
267 | //Gap - anod wires 6 copies to RICH | |
268 | par[0]=648*mm/2;par[1]= 411*mm/2 ;par[2]=4.45*mm/2;gMC->Gsvolu("Rgap","BOX ",(*fIdtmed)[kCH4] ,par,3);//xy as PPF 2001P2 z WP 2099P1 | |
269 | par[0]= 0*mm ;par[1]= 20*mkm/2 ;par[2]= 648*mm/2;gMC->Gsvolu("Rano","TUBE",(*fIdtmed)[kW] ,par,3);//WP 2099P1 z = gap x PPF 2001P2 | |
270 | AliMatrix(matrixIdReturn,180,0, 90,90, 90,0); //wires along x | |
271 | ||
272 | gMC->Gspos("Rgap",1,"RICH", -335*mm, -433*mm,8*cm-2.225*mm, 0,"ONLY"); //F1 2040P1 z WP 2099P1 | |
273 | gMC->Gspos("Rgap",2,"RICH", +335*mm, -433*mm,8*cm-2.225*mm, 0,"ONLY"); | |
274 | gMC->Gspos("Rgap",3,"RICH", -335*mm, 0*mm,8*cm-2.225*mm, 0,"ONLY"); | |
275 | gMC->Gspos("Rgap",4,"RICH", +335*mm, 0*mm,8*cm-2.225*mm, 0,"ONLY"); | |
276 | gMC->Gspos("Rgap",5,"RICH", -335*mm, +433*mm,8*cm-2.225*mm, 0,"ONLY"); | |
277 | gMC->Gspos("Rgap",6,"RICH", +335*mm, +433*mm,8*cm-2.225*mm, 0,"ONLY"); | |
278 | for(int i=1;i<=96;i++) | |
279 | gMC->Gspos("Rano",i,"Rgap", 0*mm, -411/2*mm+i*4*mm, 0.185*mm, matrixIdReturn,"ONLY"); //WP 2099P1 | |
280 | //Defines radiators geometry | |
281 | par[0]=1330*mm/2 ;par[1]= 413*mm/2 ;par[2]= 24*mm/2; gMC->Gsvolu("Rrad" ,"BOX ",(*fIdtmed)[kC6F14] ,par,3); // Rad 2011P1 | |
282 | par[0]=1330*mm/2 ;par[1]= 413*mm/2 ;par[2]= 4*mm/2; gMC->Gsvolu("RradFront" ,"BOX ",(*fIdtmed)[kRoha] ,par,3); //front | |
283 | par[0]=1330*mm/2 ;par[1]= 413*mm/2 ;par[2]= 5*mm/2; gMC->Gsvolu("RradWin" ,"BOX ",(*fIdtmed)[kSiO2] ,par,3); //window | |
284 | par[0]=1330*mm/2 ;par[1]= 5*mm/2 ;par[2]= 15*mm/2; gMC->Gsvolu("RradLong" ,"BOX ",(*fIdtmed)[kRoha] ,par,3); //long side | |
285 | par[0]= 10*mm/2 ;par[1]= 403*mm/2 ;par[2]= 15*mm/2; gMC->Gsvolu("RradShort" ,"BOX ",(*fIdtmed)[kRoha] ,par,3); //short side | |
286 | par[0]= 0 ;par[1]= 10*mm/2 ;par[2]= 15*mm/2; gMC->Gsvolu("RradSpacer","TUBE",(*fIdtmed)[kSiO2] ,par,3); //spacer | |
287 | ||
288 | gMC->Gspos("Rrad",1,"RICH", 0*mm,-434*mm, -12*mm, 0,"ONLY"); //3 radiators to RICH | |
289 | gMC->Gspos("Rrad",2,"RICH", 0*mm, 0*mm, -12*mm, 0,"ONLY"); | |
290 | gMC->Gspos("Rrad",3,"RICH", 0*mm,+434*mm, -12*mm, 0,"ONLY"); | |
291 | gMC->Gspos("RradFront",1,"Rrad", 0*mm, 0*mm, -10.0*mm, 0,"ONLY"); //front cover | |
292 | gMC->Gspos("RradWin" ,1,"Rrad", 0*mm, 0*mm, 9.5*mm, 0,"ONLY"); //quartz window (back cover) | |
293 | gMC->Gspos("RradLong" ,1,"Rrad", 0*mm,-204*mm, -0.5*mm, 0,"ONLY"); //long side | |
294 | gMC->Gspos("RradLong" ,2,"Rrad", 0*mm,+204*mm, -0.5*mm, 0,"ONLY"); //long side | |
295 | gMC->Gspos("RradShort",1,"Rrad",-660*mm, 0*mm, -0.5*mm, 0,"ONLY"); //short side | |
296 | gMC->Gspos("RradShort",2,"Rrad",+660*mm, 0*mm, -0.5*mm, 0,"ONLY"); //short side | |
297 | for(int i=0;i<3;i++) | |
298 | for(int j=0;j<10;j++) | |
299 | gMC->Gspos("RradSpacer",10*i+j,"Rrad",-1330*mm/2+116*mm+j*122*mm,(i-1)*105*mm,-0.5*mm,0,"ONLY");//spacers | |
300 | //Defines SandBox geometry | |
301 | par[0]=1419*mm/2 ;par[1]=1378*mm/2;par[2]=50.5*mm/2; gMC->Gsvolu("Rsb" ,"BOX ",(*fIdtmed)[kAir] ,par,3); //2072P1 | |
302 | par[0]=1419*mm/2 ;par[1]=1378*mm/2;par[2]= 0.5*mm/2; gMC->Gsvolu("RsbCover","BOX ",(*fIdtmed)[kAl] ,par,3); //cover | |
303 | par[0]=1359*mm/2 ;par[1]=1318*mm/2;par[2]=49.5*mm/2; gMC->Gsvolu("RsbComb" ,"BOX ",(*fIdtmed)[kRoha] ,par,3); //honeycomb structure | |
304 | ||
305 | gMC->Gspos("Rsb",1,"RICH", 0*mm, 0*mm, -73.75*mm, 0,"ONLY"); //p.84 TDR sandbox to rich | |
306 | gMC->Gspos("RsbComb" ,1,"Rsb", 0*mm, 0*mm, 0*mm, 0,"ONLY"); //2072P1 honeycomv to sandbox | |
307 | gMC->Gspos("RsbCover",1,"Rsb", 0*mm, 0*mm, +25*mm, 0,"ONLY"); //cover to sandbox | |
308 | gMC->Gspos("RsbCover",2,"Rsb", 0*mm, 0*mm, -25*mm, 0,"ONLY"); //cover to sandbox | |
309 | AliDebug(1,"Stop v1. HMPID option"); | |
310 | }//CreateGeometry() | |
311 | //__________________________________________________________________________________________________ | |
312 | void AliRICHv1::Init() | |
313 | { | |
314 | // This methode defines ID for sensitive volumes, i.e. such geometry volumes for which there are if(gMC->CurrentVolID()==XXX) statements in StepManager() | |
315 | // Arguments: none | |
316 | // Returns: none | |
317 | AliDebug(1,"Start v1 HMPID."); | |
318 | fIdRad = gMC->VolId("Rrad"); | |
319 | fIdWin = gMC->VolId("RradWin"); | |
320 | fIdPc = gMC->VolId("Rpc"); | |
321 | fIdAmpGap = gMC->VolId("Rgap"); | |
322 | fIdProxGap = gMC->VolId("Rgap"); | |
323 | AliDebug(1,"Stop v1 HMPID."); | |
324 | } | |
3582c1f9 | 325 | //__________________________________________________________________________________________________ |
326 | Bool_t AliRICHv1::IsLostByFresnel() | |
ed3ceb24 | 327 | { |
e42a7b46 | 328 | // Calculate probability for the photon to be lost by Fresnel reflection. |
3582c1f9 | 329 | TLorentzVector p4; |
330 | Double_t mom[3],localMom[3]; | |
ab296411 | 331 | gMC->TrackMomentum(p4); mom[0]=p4(1); mom[1]=p4(2); mom[2]=p4(3); |
332 | localMom[0]=0; localMom[1]=0; localMom[2]=0; | |
3582c1f9 | 333 | gMC->Gmtod(mom,localMom,2); |
334 | Double_t localTc = localMom[0]*localMom[0]+localMom[2]*localMom[2]; | |
335 | Double_t localTheta = TMath::ATan2(TMath::Sqrt(localTc),localMom[1]); | |
336 | Double_t cotheta = TMath::Abs(TMath::Cos(localTheta)); | |
337 | if(gMC->GetRandom()->Rndm() < Fresnel(p4.E()*1e9,cotheta,1)){ | |
998b831f | 338 | AliDebug(1,"Photon lost"); |
3582c1f9 | 339 | return kTRUE; |
340 | }else | |
341 | return kFALSE; | |
342 | }//IsLostByFresnel() | |
343 | //__________________________________________________________________________________________________ | |
db910db9 | 344 | void AliRICHv1::GenFee(Int_t iChamber,Float_t eloss) |
e42a7b46 | 345 | { |
346 | // Generate FeedBack photons for the current particle. To be invoked from StepManager(). | |
347 | // eloss=0 means photon so only pulse height distribution is to be analysed. This one is done in AliRICHParam::TotQdc() | |
348 | ||
349 | TLorentzVector x4; | |
350 | gMC->TrackPosition(x4); | |
db910db9 | 351 | TVector2 x2=AliRICHParam::Instance()->Mars2Lors(iChamber,x4.Vect(),AliRICHParam::kPc);//hit position on photocathode plane |
998b831f | 352 | TVector2 xspe=x2; |
db910db9 | 353 | Int_t sector=AliRICHParam::Loc2Sec(xspe); if(sector==-1) return; //hit in dead zone, nothing to produce |
354 | Int_t iTotQdc=AliRICHParam::TotQdc(x2,eloss); | |
355 | Int_t iNphotons=gMC->GetRandom()->Poisson(AliRICHParam::AlphaFeedback(iChamber,sector)*iTotQdc); | |
998b831f | 356 | AliDebug(1,Form("N photons=%i",iNphotons)); |
e42a7b46 | 357 | Int_t j; |
358 | Float_t cthf, phif, enfp = 0, sthf, e1[3], e2[3], e3[3], vmod, uswop,dir[3], phi,pol[3], mom[4]; | |
359 | //Generate photons | |
360 | for(Int_t i=0;i<iNphotons;i++){//feedbacks loop | |
361 | Double_t ranf[2]; | |
362 | gMC->GetRandom()->RndmArray(2,ranf); //Sample direction | |
363 | cthf=ranf[0]*2-1.0; | |
364 | if(cthf<0) continue; | |
365 | sthf = TMath::Sqrt((1 - cthf) * (1 + cthf)); | |
366 | phif = ranf[1] * 2 * TMath::Pi(); | |
367 | ||
368 | if(Double_t randomNumber=gMC->GetRandom()->Rndm()<=0.57) | |
369 | enfp = 7.5e-9; | |
370 | else if(randomNumber<=0.7) | |
371 | enfp = 6.4e-9; | |
372 | else | |
373 | enfp = 7.9e-9; | |
374 | ||
375 | ||
376 | dir[0] = sthf * TMath::Sin(phif); dir[1] = cthf; dir[2] = sthf * TMath::Cos(phif); | |
377 | gMC->Gdtom(dir, mom, 2); | |
378 | mom[0]*=enfp; mom[1]*=enfp; mom[2]*=enfp; | |
379 | mom[3] = TMath::Sqrt(mom[0]*mom[0]+mom[1]*mom[1]+mom[2]*mom[2]); | |
380 | ||
381 | // Polarisation | |
382 | e1[0]= 0; e1[1]=-dir[2]; e1[2]= dir[1]; | |
383 | e2[0]=-dir[1]; e2[1]= dir[0]; e2[2]= 0; | |
384 | e3[0]= dir[1]; e3[1]= 0; e3[2]=-dir[0]; | |
385 | ||
386 | vmod=0; | |
387 | for(j=0;j<3;j++) vmod+=e1[j]*e1[j]; | |
388 | if (!vmod) for(j=0;j<3;j++) { | |
389 | uswop=e1[j]; | |
390 | e1[j]=e3[j]; | |
391 | e3[j]=uswop; | |
392 | } | |
393 | vmod=0; | |
394 | for(j=0;j<3;j++) vmod+=e2[j]*e2[j]; | |
395 | if (!vmod) for(j=0;j<3;j++) { | |
396 | uswop=e2[j]; | |
397 | e2[j]=e3[j]; | |
398 | e3[j]=uswop; | |
399 | } | |
400 | ||
401 | 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; | |
402 | 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; | |
403 | ||
404 | phi = gMC->GetRandom()->Rndm()* 2 * TMath::Pi(); | |
405 | for(j=0;j<3;j++) pol[j]=e1[j]*TMath::Sin(phi)+e2[j]*TMath::Cos(phi); | |
406 | gMC->Gdtom(pol, pol, 2); | |
407 | Int_t outputNtracksStored; | |
db910db9 | 408 | gAlice->GetMCApp()->PushTrack(1, //transport |
e42a7b46 | 409 | gAlice->GetMCApp()->GetCurrentTrackNumber(),//parent track |
db910db9 | 410 | kFeedback, //PID |
411 | mom[0],mom[1],mom[2],mom[3], //track momentum | |
412 | x4.X(),x4.Y(),x4.Z(),x4.T(), //track origin | |
413 | pol[0],pol[1],pol[2], //polarization | |
414 | kPFeedBackPhoton, //process ID | |
415 | outputNtracksStored, //on return how many new photons stored on stack | |
416 | 1.0); //weight | |
e42a7b46 | 417 | }//feedbacks loop |
998b831f | 418 | AliDebug(1,"Stop."); |
e42a7b46 | 419 | }//GenerateFeedbacks() |
0422a446 | 420 | //__________________________________________________________________________________________________ |
421 | void AliRICHv1::Hits2SDigits() | |
422 | { | |
423 | // Create a list of sdigits corresponding to list of hits. Every hit generates one or more sdigits. | |
424 | AliDebug(1,"Start."); | |
425 | for(Int_t iEventN=0;iEventN<GetLoader()->GetRunLoader()->GetAliRun()->GetEventsPerRun();iEventN++){//events loop | |
426 | GetLoader()->GetRunLoader()->GetEvent(iEventN);//get next event | |
427 | ||
428 | if(!GetLoader()->TreeH()) GetLoader()->LoadHits(); GetLoader()->GetRunLoader()->LoadHeader(); | |
429 | if(!GetLoader()->GetRunLoader()->TreeK()) GetLoader()->GetRunLoader()->LoadKinematics();//from | |
430 | if(!GetLoader()->TreeS()) GetLoader()->MakeTree("S"); MakeBranch("S");//to | |
431 | ||
432 | for(Int_t iPrimN=0;iPrimN<GetLoader()->TreeH()->GetEntries();iPrimN++){//prims loop | |
433 | GetLoader()->TreeH()->GetEntry(iPrimN); | |
434 | for(Int_t iHitN=0;iHitN<Hits()->GetEntries();iHitN++){//hits loop | |
435 | AliRICHHit *pHit=(AliRICHHit*)Hits()->At(iHitN);//get current hit | |
db910db9 | 436 | TVector2 x2 = AliRICHParam::Instance()->Mars2Lors(pHit->C(),0.5*(pHit->InX3()+pHit->OutX3()),AliRICHParam::kAnod);//hit position in the anod plane |
437 | Int_t iTotQdc=AliRICHParam::TotQdc(x2,pHit->Eloss());//total charge produced by hit, 0 if hit in dead zone | |
0422a446 | 438 | if(iTotQdc==0) continue; |
439 | // | |
440 | //need to quantize the anod.... | |
441 | TVector padHit=AliRICHParam::Loc2Pad(x2); | |
442 | TVector2 padHitXY=AliRICHParam::Pad2Loc(padHit); | |
443 | TVector2 anod; | |
db910db9 | 444 | if((x2.Y()-padHitXY.Y())>0) anod.Set(x2.X(),padHitXY.Y()+AliRICHParam::AnodPitch()/2); |
445 | else anod.Set(x2.X(),padHitXY.Y()-AliRICHParam::AnodPitch()/2); | |
0422a446 | 446 | //end to quantize anod |
447 | // | |
db910db9 | 448 | TVector area=AliRICHParam::Loc2Area(anod);//determine affected pads, dead zones analysed inside |
0422a446 | 449 | AliDebug(1,Form("hitanod(%6.2f,%6.2f)->area(%3.0f,%3.0f)-(%3.0f,%3.0f) QDC=%4i",anod.X(),anod.Y(),area[0],area[1],area[2],area[3],iTotQdc)); |
450 | TVector pad(2); | |
451 | for(pad[1]=area[1];pad[1]<=area[3];pad[1]++)//affected pads loop | |
452 | for(pad[0]=area[0];pad[0]<=area[2];pad[0]++){ | |
db910db9 | 453 | Double_t padQdc=iTotQdc*AliRICHParam::FracQdc(anod,pad); |
0422a446 | 454 | AliDebug(1,Form("current pad(%3.0f,%3.0f) with QDC =%6.2f",pad[0],pad[1],padQdc)); |
db910db9 | 455 | if(padQdc>0.1) SDigAdd(pHit->C(),pad,padQdc,GetLoader()->GetRunLoader()->Stack()->Particle(pHit->GetTrack())->GetPdgCode(),pHit->GetTrack()); |
0422a446 | 456 | }//affected pads loop |
457 | }//hits loop | |
458 | }//prims loop | |
459 | GetLoader()->TreeS()->Fill(); | |
460 | GetLoader()->WriteSDigits("OVERWRITE"); | |
db910db9 | 461 | SDigReset(); |
0422a446 | 462 | }//events loop |
463 | GetLoader()->UnloadHits(); GetLoader()->GetRunLoader()->UnloadHeader(); GetLoader()->GetRunLoader()->UnloadKinematics(); | |
464 | GetLoader()->UnloadSDigits(); | |
465 | AliDebug(1,"Stop."); | |
466 | }//Hits2SDigits() | |
467 | //__________________________________________________________________________________________________ | |
468 | void AliRICHv1::Digits2Raw() | |
469 | { | |
470 | //Creates raw data files in DDL format. Invoked by AliSimulation | |
471 | //loop over events is done outside in AliSimulation | |
472 | //Arguments: none | |
473 | // Returns: none | |
474 | AliDebug(1,"Start."); | |
475 | GetLoader()->LoadDigits(); | |
476 | GetLoader()->TreeD()->GetEntry(0); | |
477 | ||
478 | ofstream file[AliRICHDigit::kNddls]; //output streams | |
479 | Int_t cnt[AliRICHDigit::kNddls]; //data words counters for DDLs | |
480 | AliRawDataHeader header; //empty DDL header | |
481 | UInt_t w32=0; //32 bits data word | |
482 | ||
483 | for(Int_t i=0;i<AliRICHDigit::kNddls;i++){//open all 14 DDL in parallel | |
484 | file[i].open(Form("RICH_%4i.ddl",AliRICHDigit::kDdlOffset+i)); //first is 0x700 | |
485 | file[i].write((char*)&header,sizeof(header)); //write dummy header as place holder, actual will be written later when total size of DDL is known | |
486 | cnt[i]=0; //reset counters | |
487 | } | |
488 | ||
db910db9 | 489 | for(Int_t iCh=0;iCh<fNcham;iCh++){ //digits are stored on chamber by chamber basis |
490 | TClonesArray *pDigs=(TClonesArray*)fDig->UncheckedAt(iCh); | |
491 | for(Int_t iDig=0;iDig<pDigs->GetEntriesFast();iDig++){//digits loop for a given chamber | |
492 | AliRICHDigit *pDig=(AliRICHDigit*)pDigs->At(iDig); | |
0422a446 | 493 | Int_t ddl=pDig->Dig2Raw(w32); //ddl is 0..13 |
494 | file[ddl].write((char*)&w32,sizeof(w32)); cnt[ddl]++;//write formated digit to the propriate file (as decided in Dig2Raw) and increment corresponding counter | |
495 | }//digits loop for a given chamber | |
496 | }//chambers loop | |
497 | for(Int_t i=0;i<AliRICHDigit::kNddls;i++){ | |
498 | header.fSize=sizeof(header)+cnt[i]*sizeof(w32); //now calculate total number of bytes for each DDL file | |
499 | header.SetAttribute(0); | |
500 | file[i].seekp(0); file[i].write((char*)&header,sizeof(header));//rewrite DDL header with fSize field properly set | |
501 | file[i].close(); //close DDL file | |
502 | } | |
503 | GetLoader()->UnloadDigits(); | |
504 | AliDebug(1,"Stop."); | |
505 | }//Digits2Raw() | |
506 | //__________________________________________________________________________________________________ | |
db910db9 | 507 | Float_t AliRICHv1::Fresnel(Float_t ene,Float_t pdoti, Bool_t pola) |
508 | { | |
509 | // Correction for Fresnel ??????????? | |
510 | // Arguments: ene - photon energy [GeV], | |
511 | // PDOTI=COS(INC.ANG.), PDOTR=COS(POL.PLANE ROT.ANG.) | |
512 | // Returns: | |
513 | 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, | |
514 | 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, | |
515 | 7.8,7.9,8.0,8.1,8.2,8.3,8.4,8.5}; | |
516 | Float_t csin[36] = {2.14,2.21,2.33,2.48,2.76,2.97,2.99,2.59,2.81,3.05, | |
517 | 2.86,2.53,2.55,2.66,2.79,2.96,3.18,3.05,2.84,2.81,2.38,2.11, | |
518 | 2.01,2.13,2.39,2.73,3.08,3.15,2.95,2.73,2.56,2.41,2.12,1.95, | |
519 | 1.72,1.53}; | |
520 | Float_t csik[36] = {0.,0.,0.,0.,0.,0.196,0.408,0.208,0.118,0.49,0.784,0.543, | |
521 | 0.424,0.404,0.371,0.514,0.922,1.102,1.139,1.376,1.461,1.253,0.878, | |
522 | 0.69,0.612,0.649,0.824,1.347,1.571,1.678,1.763,1.857,1.824,1.824, | |
523 | 1.714,1.498}; | |
524 | Float_t xe=ene; | |
525 | Int_t j=Int_t(xe*10)-49; | |
526 | Float_t cn=csin[j]+((csin[j+1]-csin[j])/0.1)*(xe-en[j]); | |
527 | Float_t ck=csik[j]+((csik[j+1]-csik[j])/0.1)*(xe-en[j]); | |
528 | ||
529 | //FORMULAE FROM HANDBOOK OF OPTICS, 33.23 OR | |
530 | //W.R. HUNTER, J.O.S.A. 54 (1964),15 , J.O.S.A. 55(1965),1197 | |
531 | ||
532 | Float_t sinin=TMath::Sqrt(1-pdoti*pdoti); | |
533 | Float_t tanin=sinin/pdoti; | |
534 | ||
535 | Float_t c1=cn*cn-ck*ck-sinin*sinin; | |
536 | Float_t c2=4*cn*cn*ck*ck; | |
537 | Float_t aO=TMath::Sqrt(0.5*(TMath::Sqrt(c1*c1+c2)+c1)); | |
538 | Float_t b2=0.5*(TMath::Sqrt(c1*c1+c2)-c1); | |
539 | ||
540 | Float_t rs=((aO-pdoti)*(aO-pdoti)+b2)/((aO+pdoti)*(aO+pdoti)+b2); | |
541 | Float_t rp=rs*((aO-sinin*tanin)*(aO-sinin*tanin)+b2)/((aO+sinin*tanin)*(aO+sinin*tanin)+b2); | |
542 | ||
543 | ||
544 | //CORRECTION FACTOR FOR SURFACE ROUGHNESS | |
545 | //B.J. STAGG APPLIED OPTICS, 30(1991),4113 | |
546 | ||
547 | Float_t sigraf=18.; | |
548 | Float_t lamb=1240/ene; | |
549 | Float_t fresn; | |
550 | ||
551 | Float_t rO=TMath::Exp(-(4*TMath::Pi()*pdoti*sigraf/lamb)*(4*TMath::Pi()*pdoti*sigraf/lamb)); | |
552 | ||
553 | if(pola) | |
554 | { | |
555 | Float_t pdotr=0.8; //DEGREE OF POLARIZATION : 1->P , -1->S | |
556 | fresn=0.5*(rp*(1+pdotr)+rs*(1-pdotr)); | |
557 | } | |
558 | else | |
559 | fresn=0.5*(rp+rs); | |
560 | ||
561 | fresn = fresn*rO; | |
562 | return fresn; | |
563 | }//Fresnel() | |
564 | //__________________________________________________________________________________________________ | |
565 | void AliRICHv1::Print(Option_t *option)const | |
566 | { | |
567 | // Debug printout | |
568 | TObject::Print(option); | |
569 | Printf("Total number of MIP reached radiator %9i",fCounters(kMipEnterRad)); | |
570 | Printf("Total number of Ckov created %9i",fCounters(kCkovNew)); | |
571 | Printf("number of Ckov created in radiator %9i",fCounters(kCkovNewRad)); | |
572 | Printf("number of Ckov created in window %9i",fCounters(kCkovNewWin)); | |
573 | Printf("number of Ckov created in proximity gap %9i",fCounters(kCkovNewProxGap)); | |
574 | Printf("number of Ckov created in amplification gap %9i",fCounters(kCkovNewAmpGap)); | |
575 | Printf("number of Ckov reached PC %9i",fCounters(kCkovEnterPc)); | |
576 | Printf("number of photelectrons %9i",fCounters(kPhotoEle)); | |
577 | }//void AliRICH::Print(Option_t *option)const | |
578 | //__________________________________________________________________________________________________ | |
579 | void AliRICHv1::StepCount() | |
580 | { | |
581 | // Count number of ckovs created | |
582 | Int_t copy; | |
583 | if(gMC->TrackCharge() &&gMC->CurrentVolID(copy)==fIdRad &&gMC->IsTrackEntering() ) fCounters(kMipEnterRad)++; | |
584 | if(gMC->TrackPid()==kCerenkov &&gMC->IsNewTrack() ) fCounters(kCkovNew)++; | |
585 | if(gMC->TrackPid()==kCerenkov&&gMC->CurrentVolID(copy)==fIdRad &&gMC->IsNewTrack() ) fCounters(kCkovNewRad)++; | |
586 | if(gMC->TrackPid()==kCerenkov&&gMC->CurrentVolID(copy)==fIdWin &&gMC->IsNewTrack() ) fCounters(kCkovNewWin)++; | |
587 | if(gMC->TrackPid()==kCerenkov&&gMC->CurrentVolID(copy)==fIdProxGap&&gMC->IsNewTrack() ) fCounters(kCkovNewProxGap)++; | |
588 | if(gMC->TrackPid()==kCerenkov&&gMC->CurrentVolID(copy)==fIdAmpGap &&gMC->IsNewTrack() ) fCounters(kCkovNewAmpGap)++; | |
589 | if(gMC->TrackPid()==kCerenkov&&gMC->CurrentVolID(copy)==fIdPc &&gMC->IsTrackEntering() ) fCounters(kCkovEnterPc)++; | |
590 | if(gMC->TrackPid()==kCerenkov&&gMC->CurrentVolID(copy)==fIdPc &&gMC->IsTrackEntering() &&gMC->Edep()>0) fCounters(kPhotoEle)++; | |
591 | } | |
592 | //__________________________________________________________________________________________________ | |
593 | void AliRICHv1::StepHistory() | |
594 | { | |
595 | // This methode is invoked from StepManager() in order to print out | |
596 | static Int_t iStepN; | |
597 | const char *sParticle; | |
598 | switch(gMC->TrackPid()){ | |
599 | case kProton: sParticle="PROTON" ;break; | |
600 | case kNeutron: sParticle="neutron" ;break; | |
601 | case kGamma: sParticle="gamma" ;break; | |
602 | case kCerenkov: sParticle="CKOV" ;break; | |
603 | case kPi0: sParticle="Pi0" ;break; | |
604 | case kPiPlus: sParticle="Pi+" ;break; | |
605 | case kPiMinus: sParticle="Pi-" ;break; | |
606 | case kElectron: sParticle="electron" ;break; | |
607 | default: sParticle="not known" ;break; | |
608 | } | |
609 | ||
610 | TString flag="fanny combination"; | |
611 | if(gMC->IsTrackAlive()) | |
612 | if(gMC->IsTrackEntering()) flag="enters to"; | |
613 | else if(gMC->IsTrackExiting()) flag="exits from"; | |
614 | else if(gMC->IsTrackInside()) flag="inside"; | |
615 | else | |
616 | if(gMC->IsTrackStop()) flag="stoped in"; | |
617 | ||
618 | Int_t vid=0,copy=0; | |
619 | TString path=gMC->CurrentVolName(); path.Prepend("-");path.Prepend(gMC->CurrentVolOffName(1));//current volume and his mother are always there | |
620 | vid=gMC->CurrentVolOffID(2,copy); if(vid) {path.Prepend("-");path.Prepend(gMC->VolName(vid));} | |
621 | vid=gMC->CurrentVolOffID(3,copy); if(vid) {path.Prepend("-");path.Prepend(gMC->VolName(vid));} | |
622 | ||
623 | Printf("Step %i: %s (%i) %s %s m=%.6f GeV q=%.1f dEdX=%.4f",iStepN,sParticle,gMC->TrackPid(),flag.Data(),path.Data(),gMC->TrackMass(),gMC->TrackCharge(),gMC->Edep()*1e9); | |
624 | ||
625 | Printf("Step %i: tid=%i flags alive=%i disap=%i enter=%i exit=%i inside=%i out=%i stop=%i new=%i", | |
626 | iStepN, gAlice->GetMCApp()->GetCurrentTrackNumber(), | |
627 | gMC->IsTrackAlive(), gMC->IsTrackDisappeared(),gMC->IsTrackEntering(), gMC->IsTrackExiting(), | |
628 | gMC->IsTrackInside(),gMC->IsTrackOut(), gMC->IsTrackStop(), gMC->IsNewTrack()); | |
629 | ||
630 | Float_t a,z,den,rad,abs; a=z=den=rad=abs=-1; | |
631 | Int_t mid=gMC->CurrentMaterial(a,z,den,rad,abs); | |
632 | Printf("Step %i: id=%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); | |
633 | iStepN++; | |
634 | }//StepHistory() | |
635 | //__________________________________________________________________________________________________ | |
636 | void AliRICHv1::StepManager() | |
637 | { | |
638 | // Full Step Manager. | |
639 | // Arguments: none | |
640 | // Returns: none | |
641 | // StepHistory(); return; //uncomment to print tracks history | |
642 | // StepCount(); return; //uncomment to count photons | |
643 | ||
644 | Int_t copy; //volume copy aka node | |
645 | static Int_t iCham; | |
646 | //Treat photons | |
647 | static TLorentzVector cerX4; | |
648 | if((gMC->TrackPid()==kCerenkov||gMC->TrackPid()==kFeedback)&&gMC->CurrentVolID(copy)==fIdPc){//photon in PC | |
649 | if(gMC->Edep()>0){//photon survided QE test i.e. produces electron | |
650 | if(IsLostByFresnel()){ gMC->StopTrack(); return;} //photon lost due to fersnel reflection | |
651 | gMC->TrackPosition(cerX4); gMC->CurrentVolOffID(2,iCham);//RICH-Rppf-Rpc | |
652 | HitAdd(iCham,gMC->GetStack()->GetCurrentTrackNumber(),gMC->TrackPid(),cerX4.Vect(),cerX4.Vect());//HIT for PHOTON in conditions CF+CSI+DE | |
653 | GenFee(iCham); | |
654 | }//photon in PC and DE >0 | |
655 | }//photon in PC | |
656 | ||
657 | //Treat charged particles | |
658 | static Float_t eloss; | |
659 | static TLorentzVector mipInX4,mipOutX4; | |
660 | if(gMC->TrackCharge() && gMC->CurrentVolID(copy)==fIdAmpGap){//MIP in amplification gap | |
661 | gMC->CurrentVolOffID(1,iCham);//RICH-Rgap | |
662 | if(gMC->IsTrackEntering()||gMC->IsNewTrack()) {//MIP in GAP entering or newly created | |
663 | eloss=0; | |
664 | gMC->TrackPosition(mipInX4); | |
665 | }else if(gMC->IsTrackExiting()||gMC->IsTrackStop()||gMC->IsTrackDisappeared()){//MIP in GAP exiting or disappeared | |
666 | eloss+=gMC->Edep();//take into account last step dEdX | |
667 | gMC->TrackPosition(mipOutX4); | |
668 | HitAdd(iCham,gMC->GetStack()->GetCurrentTrackNumber(),gMC->TrackPid(),mipInX4.Vect(),mipOutX4.Vect(),eloss);//HIT for MIP: MIP in GAP Exiting | |
669 | GenFee(iCham,eloss);//MIP+GAP+Exit | |
670 | }else//MIP in GAP going inside | |
671 | eloss += gMC->Edep(); | |
672 | }//MIP in GAP | |
673 | }//StepManager() | |
674 | //__________________________________________________________________________________________________ |