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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 | // ************************************************************************** | |
15 | #include "AliRICHParam.h" | |
16 | #include "AliESD.h" | |
17 | #include "AliRICHChamber.h" | |
18 | #include <TCanvas.h> | |
19 | #include <TLatex.h> | |
20 | #include <THStack.h> | |
21 | #include <TLegend.h> | |
22 | #include <TView.h> | |
23 | #include <TPolyMarker3D.h> | |
24 | #include <TPolyLine3D.h> | |
25 | #include <TPolyLine.h> | |
26 | #include <TSystem.h> | |
27 | #include <TVector2.h> | |
28 | #include <TVector3.h> | |
29 | #include <TRotation.h> | |
30 | ||
31 | ||
32 | ClassImp(AliRICHParam) | |
33 | Bool_t AliRICHParam::fgIsWireSag =kTRUE; //take ware sagita into account? | |
34 | Bool_t AliRICHParam::fgIsResolveClusters =kTRUE; //do cluster resolving? | |
35 | Bool_t AliRICHParam::fgIsFeedback =kTRUE; //generate feedback photons? | |
36 | Bool_t AliRICHParam::fgIsRadioSrc =kFALSE; //put radioactive source instead of radiators? | |
37 | Bool_t AliRICHParam::fgIsAerogel =kFALSE; //special aerogel configuration | |
38 | Bool_t AliRICHParam::fgIsTestBeam =kFALSE; //special test beam configuration | |
39 | ||
40 | Int_t AliRICHParam::fgHV[kNsectors] ={2050,2050,2050,2050,2050,2050}; | |
41 | Int_t AliRICHParam::fgNsigmaTh =4; | |
42 | Float_t AliRICHParam::fgSigmaThMean =1.132; //QDC | |
43 | Float_t AliRICHParam::fgSigmaThSpread =0.035; // | |
44 | Double_t AliRICHParam::fgErrChrom[4][330]; // | |
45 | Double_t AliRICHParam::fgErrGeom[4][330]; // | |
46 | Double_t AliRICHParam::fgErrLoc[4][330]; //Chromatic, Geometric and Localization array to parametrize SigmaCerenkov | |
47 | Double_t AliRICHParam::fgMass[5] ={0.00051,0.10566,0.13957,0.49360,0.93828}; | |
48 | ||
49 | //__________________________________________________________________________________________________ | |
50 | void AliRICHParam::Print(Option_t*) const | |
51 | { | |
52 | //print some usefull (hopefully) info on some internal guts of RICH parametrisation | |
53 | AliInfo(Form("Pads in chamber (%3i,%3i) in sector (%2i,%2i) pad size (%4.2f,%4.2f)",NpadsX(),NpadsY(),NpadsXsec(),NpadsYsec(),PadSizeX(),PadSizeY())); | |
54 | AliInfo(Form("Resolve clusters %i sagita %i Radio source %i Aerogel %i TestBeam %i", | |
55 | IsResolveClusters(),IsWireSag(),IsRadioSrc(),IsAerogel(),IsTestBeam())); | |
56 | fpChambers->Print(); | |
57 | }//Print() | |
58 | //__________________________________________________________________________________________________ | |
59 | void AliRICHParam::CreateChambers() | |
60 | { | |
61 | //Create all RICH Chambers on each call. Previous chambers deleted. | |
62 | if(fpChambers) delete fpChambers; | |
63 | if(fgIsTestBeam){ | |
64 | fpChambers=new TObjArray(1);//test beam configuration 1 chamber | |
65 | fpChambers->AddAt(new AliRICHChamber(0),0); | |
66 | }else{ | |
67 | fpChambers=new TObjArray(kNchambers);//normal configuration 7 chambers | |
68 | for(int iChamberN=0;iChamberN<kNchambers;iChamberN++) fpChambers->AddAt(new AliRICHChamber(iChamberN+1),iChamberN); | |
69 | } | |
70 | fpChambers->SetOwner(); | |
71 | }//CreateChambers() | |
72 | //__________________________________________________________________________________________________ | |
73 | Float_t AliRICHParam::AbsCH4(Float_t eV) | |
74 | { | |
75 | //Evaluate the absorbtion lenght of CH4 for a photon of energy eV in electron-volts | |
76 | const Float_t kLoschmidt=2.686763e19; // LOSCHMIDT NUMBER IN CM-3 | |
77 | const Float_t kPressure=750.0; //mm of Hg | |
78 | const Float_t kTemperature=283.0; //K (10 grad C) | |
79 | const Float_t kPn=kPressure/760.; | |
80 | const Float_t kTn=kTemperature/273.16; | |
81 | const Float_t kC0=-1.655279e-1; | |
82 | const Float_t kC1= 6.307392e-2; | |
83 | const Float_t kC2=-8.011441e-3; | |
84 | const Float_t kC3= 3.392126e-4; | |
85 | ||
86 | Float_t crossSection=0; | |
87 | if (eV<7.75) | |
88 | crossSection=0.06e-22; | |
89 | else //------ METHANE CROSS SECTION cm-2 ASTROPH. J. 214, L47 (1978) | |
90 | crossSection=(kC0+kC1*eV+kC2*eV*eV+kC3*eV*eV*eV)*1.e-18; | |
91 | ||
92 | Float_t density=kLoschmidt*kPn/kTn; //CH4 molecular concentration (cm^-3) | |
93 | return 1.0/(density*crossSection); | |
94 | }//AbsoCH4() | |
95 | //__________________________________________________________________________________________________ | |
96 | void AliRICHParam::TestSeg() | |
97 | { | |
98 | //Provides a set of pictures to test segementation currently in use. | |
99 | new TCanvas("pads","PC segmentation - pads display",700,600); | |
100 | gPad->Range(-5,-5,PcSizeX()+5,PcSizeY()+15); | |
101 | TVector p(2); TVector2 c; TVector2 b; //current: pad, pad center, pad boundary | |
102 | // list of corners: | |
103 | Double_t x0=0,x1=SectorSizeX(),x2=SectorSizeX()+DeadZone(), x3=PcSizeX(); | |
104 | Double_t y0=0,y1=SectorSizeY(),y2=SectorSizeY()+DeadZone(),y3=2*SectorSizeY()+DeadZone(),y4=PcSizeY()-SectorSizeY(),y5=PcSizeY(); | |
105 | DrawSectors(); | |
106 | //header | |
107 | TLatex t; | |
108 | t.SetTextSize(0.02); t.SetTextColor(kBlack); t.SetTextAlign(11); | |
109 | t.DrawLatex(0,PcSizeY()+10,Form("IP in front of this page. pad size %.2fx%.2fcm dead zone %.2fcm",PadSizeX(),PadSizeY(),DeadZone())); | |
110 | t.DrawLatex(0,PcSizeY()+ 5,Form("Pc %.2fx%.2f cm %ix%i pads Sec %.2fx%.2f cm %ix%i pads", | |
111 | PcSizeX() , PcSizeY() , NpadsX() , NpadsY() , | |
112 | SectorSizeX() , SectorSizeY() , NpadsXsec() , NpadsYsec() )); | |
113 | //sectors | |
114 | t.SetTextSize(0.015); t.SetTextColor(kRed); t.SetTextAlign(22); | |
115 | c=Pad2Loc( 40, 24); t.DrawText(c.X(),c.Y(),Form("sec 1 (%.2f,%.2f)",c.X(),c.Y() )); | |
116 | c=Pad2Loc( 40, 75); t.DrawText(c.X(),c.Y(),Form("sec 3 (%.2f,%.2f)",c.X(),c.Y() )); | |
117 | c=Pad2Loc( 40,121); t.DrawText(c.X(),c.Y(),Form("sec 5 (%.2f,%.2f)",c.X(),c.Y() )); | |
118 | c=Pad2Loc(120, 24); t.DrawText(c.X(),c.Y(),Form("sec 2 (%.2f,%.2f)",c.X(),c.Y() )); | |
119 | c=Pad2Loc(120, 75); t.DrawText(c.X(),c.Y(),Form("sec 4 (%.2f,%.2f)",c.X(),c.Y() )); | |
120 | c=Pad2Loc(120,121); t.DrawText(c.X(),c.Y(),Form("sec 6 (%.2f,%.2f)",c.X(),c.Y() )); | |
121 | //coners | |
122 | t.SetTextSize(0.015); t.SetTextColor(kBlue); | |
123 | ||
124 | b.Set(x0,y0);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(11);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
125 | b.Set(x0,y1);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(13);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
126 | b.Set(x0,y2);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(11);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
127 | b.Set(x0,y3);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(13);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
128 | b.Set(x0,y4);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(11);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
129 | b.Set(x0,y5);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(13);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
130 | ||
131 | b.Set(x1,y0);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(31);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
132 | b.Set(x1,y1);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(33);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
133 | b.Set(x1,y2);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(31);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
134 | b.Set(x1,y3);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(33);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
135 | b.Set(x1,y4);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(31);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
136 | b.Set(x1,y5);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(33);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
137 | ||
138 | b.Set(x2,y0);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(11);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
139 | b.Set(x2,y1);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(13);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
140 | b.Set(x2,y2);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(11);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
141 | b.Set(x2,y3);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(13);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
142 | b.Set(x2,y4);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(11);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
143 | b.Set(x2,y5);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(13);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
144 | ||
145 | b.Set(x3,y0);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(31);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
146 | b.Set(x3,y1);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(33);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
147 | b.Set(x3,y2);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(31);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
148 | b.Set(x3,y3);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(33);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
149 | b.Set(x3,y4);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(31);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
150 | b.Set(x3,y5);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(33);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y())); | |
151 | }//TestSeg() | |
152 | //__________________________________________________________________________________________________ | |
153 | void AliRICHParam::TestResp() | |
154 | { | |
155 | //Provides a set of plot to check the response parametrisation currently in use. | |
156 | TCanvas *pC=new TCanvas("c","Amplification test",900,800); | |
157 | pC->Divide(1,2); | |
158 | ||
159 | ||
160 | const Int_t kNpoints=8; | |
161 | THStack *pStackPhot=new THStack("StackPhot","photons"); | |
162 | THStack *pStackMip =new THStack("StackMip","mips"); | |
163 | TLegend *pLeg=new TLegend(0.6,0.2,0.9,0.5,"legend"); | |
164 | TH1F *apHphot[kNpoints]; | |
165 | TH1F *apHmip[kNpoints]; | |
166 | ||
167 | Double_t starty=0; | |
168 | Double_t deltay=AliRICHParam::SectorSizeY()/kNpoints; | |
169 | ||
170 | for(int i=0;i<kNpoints;i++){ | |
171 | apHphot[i]=new TH1F(Form("hphot%i",i),"Qdc for Photon;QDC;Counts",500,0,500); apHphot[i]->SetLineColor(i);pStackPhot->Add(apHphot[i]); | |
172 | apHmip[i] =new TH1F(Form("hmip%i",i),"Qdc for Mip;QDC;Counts",4000,0,4000); apHmip[i]->SetLineColor(i);pStackMip->Add(apHmip[i]); | |
173 | ||
174 | pLeg->AddEntry(apHphot[i],Form("@(10,%5.2f->%5.2f)",starty+i*deltay,starty+i*deltay-SectorSizeY()/2)); | |
175 | } | |
176 | ||
177 | ||
178 | TVector2 x2(0,0); | |
179 | for(Int_t i=0;i<10000;i++){//events loop | |
180 | for(int j=0;j<kNpoints;j++){ | |
181 | x2.Set(10,starty+j*deltay); | |
182 | apHphot[j]->Fill(TotQdc(x2,0)); | |
183 | apHmip[j]->Fill(TotQdc(x2,gRandom->Landau(600,150)*1e-9)); | |
184 | } | |
185 | } | |
186 | ||
187 | pC->cd(1); pStackMip->Draw("nostack"); | |
188 | pC->cd(2); pStackPhot->Draw("nostack"); pLeg->Draw(); | |
189 | }//TestResp() | |
190 | //__________________________________________________________________________________________________ | |
191 | void AliRICHParam::TestTrans() | |
192 | { | |
193 | //Provides a set of plots to test transformation methods | |
194 | new TCanvas("trasform","Test LRS-MRS transform"); | |
195 | TLatex t; t.SetTextSize(0.02); | |
196 | ||
197 | TView *pView=new TView(1); | |
198 | pView->SetRange(-600,-600,-600,600,600,600); | |
199 | DrawAxis(); | |
200 | //Draw PC for all chambers by trasfering Pc plane using Pc2Mrs methode | |
201 | Int_t iNpointsX=50,iNpointsY=50; | |
202 | for(Int_t iChamberN=1;iChamberN<=7;iChamberN++){//chamber loop | |
203 | TPolyMarker3D *pChamber=new TPolyMarker3D(iNpointsX*iNpointsY); | |
204 | Int_t i=0; | |
205 | for(Double_t x=0;x<PcSizeX();x+=PcSizeX()/iNpointsX) | |
206 | for(Double_t y=0;y<PcSizeY();y+=PcSizeY()/iNpointsY){//step loop | |
207 | TVector3 v3=C(iChamberN)->Pc2Mrs(TVector2(x,y));//from regular grid of local PC points to MRS presentation | |
208 | pChamber->SetPoint(i++,v3.X(),v3.Y(),v3.Z());//Pc plane poing in MRS | |
209 | }//step loop | |
210 | pChamber->SetMarkerSize(1); | |
211 | pChamber->SetMarkerColor(iChamberN); | |
212 | pChamber->Draw(); | |
213 | t.SetNDC();t.SetTextColor(iChamberN); t.DrawText(0.1,iChamberN*0.1,Form("Chamber %i",iChamberN)); | |
214 | }//chamber loop | |
215 | // gPad->GetView()->RotateView(94,45); | |
216 | }//TestTrans() | |
217 | //__________________________________________________________________________________________________ | |
218 | void AliRICHParam::DrawAxis() | |
219 | { | |
220 | //Utility: draws axis on geometry scene | |
221 | Double_t x[6]={0,0,0,300,0,0}; Double_t y[6]={0,0,0,0,300,0}; Double_t z[6]={0,0,0,0,0,300}; | |
222 | TPolyLine3D *pXaxis=new TPolyLine3D(2,x);pXaxis->SetLineColor(kRed); pXaxis->Draw(); | |
223 | TPolyLine3D *pYaxis=new TPolyLine3D(2,y);pYaxis->SetLineColor(kGreen); pYaxis->Draw(); | |
224 | TPolyLine3D *pZaxis=new TPolyLine3D(2,z);pZaxis->SetLineColor(kBlue); pZaxis->Draw(); | |
225 | } | |
226 | //__________________________________________________________________________________________________ | |
227 | void AliRICHParam::DrawSectors() | |
228 | { | |
229 | //Utility: draws RICH chamber sectors on event display. | |
230 | Double_t xLeft[5] = {0,0,SectorSizeX(),SectorSizeX(),0}; | |
231 | Double_t xRight[5] = {SectorSizeX()+DeadZone(),SectorSizeX()+DeadZone(),PcSizeX(),PcSizeX(),SectorSizeX()+DeadZone()}; | |
232 | ||
233 | Double_t yDown[5] = {0,SectorSizeY(),SectorSizeY(),0,0}; | |
234 | Double_t yCenter[5] = { SectorSizeY()+DeadZone(),2*SectorSizeY()+DeadZone(),2*SectorSizeY()+DeadZone(), | |
235 | SectorSizeY()+DeadZone(),SectorSizeY()+DeadZone()}; | |
236 | Double_t yUp[5] = {2*SectorSizeY()+2*DeadZone(),PcSizeY(),PcSizeY(),2*SectorSizeY()+2*DeadZone(),2*SectorSizeY()+2*DeadZone()}; | |
237 | ||
238 | TPolyLine *sec1 = new TPolyLine(5,xLeft ,yDown); sec1->SetLineColor(21); sec1->Draw(); | |
239 | TPolyLine *sec2 = new TPolyLine(5,xRight,yDown); sec2->SetLineColor(21); sec2->Draw(); | |
240 | TPolyLine *sec3 = new TPolyLine(5,xLeft ,yCenter); sec3->SetLineColor(21); sec3->Draw(); | |
241 | TPolyLine *sec4 = new TPolyLine(5,xRight,yCenter); sec4->SetLineColor(21); sec4->Draw(); | |
242 | TPolyLine *sec5 = new TPolyLine(5,xLeft, yUp); sec5->SetLineColor(21); sec5->Draw(); | |
243 | TPolyLine *sec6 = new TPolyLine(5,xRight,yUp); sec6->SetLineColor(21); sec6->Draw(); | |
244 | }//DrawSectors() | |
245 | //__________________________________________________________________________________________________ | |
246 | void AliRICHParam::ReadErrFiles() | |
247 | { | |
248 | // Read the three files corresponding to Chrom,Geom and Loc | |
249 | // They are parameters of a polynomial of 6th order... | |
250 | ||
251 | static Bool_t count = kFALSE; | |
252 | ||
253 | Float_t c0,c1,c2,c3,c; | |
254 | Float_t g0,g1,g2,g3,g; | |
255 | Float_t l0,l1,l2,l3,l; | |
256 | ||
257 | FILE *pChromErr, *pGeomErr, *pLocErr; | |
258 | ||
259 | if(!count) { | |
260 | AliInfoGeneral("ReadErrFiles","reading RICH error parameters..."); | |
261 | pChromErr = fopen(Form("%s/RICH/RICHConfig/SigmaChromErr.txt",gSystem->Getenv("ALICE_ROOT")),"r"); | |
262 | pGeomErr = fopen(Form("%s/RICH/RICHConfig/SigmaGeomErr.txt",gSystem->Getenv("ALICE_ROOT")),"r"); | |
263 | pLocErr = fopen(Form("%s/RICH/RICHConfig/SigmaLocErr.txt",gSystem->Getenv("ALICE_ROOT")),"r"); | |
264 | if(!pChromErr||!pGeomErr||!pLocErr) {AliErrorGeneral("ReadErrFiles"," RICH ERROR READING Parameter FILES: can't open files!!! ");return;} | |
265 | for(Int_t i=0;i<330;i++) { | |
266 | fscanf(pChromErr,"%f%f%f%f%f\n",&c0,&c1,&c2,&c3,&c); | |
267 | fscanf(pGeomErr,"%f%f%f%f%f\n",&g0,&g1,&g2,&g3,&g); | |
268 | fscanf(pLocErr,"%f%f%f%f%f\n",&l0,&l1,&l2,&l3,&l); | |
269 | fgErrChrom[0][i] = c0; | |
270 | fgErrChrom[1][i] = c1; | |
271 | fgErrChrom[2][i] = c2; | |
272 | fgErrChrom[3][i] = c3; | |
273 | fgErrGeom[0][i] = g0; | |
274 | fgErrGeom[1][i] = g1; | |
275 | fgErrGeom[2][i] = g2; | |
276 | fgErrGeom[3][i] = g3; | |
277 | fgErrLoc[0][i] = l0; | |
278 | fgErrLoc[1][i] = l1; | |
279 | fgErrLoc[2][i] = l2; | |
280 | fgErrLoc[3][i] = l3; | |
281 | } | |
282 | AliInfoGeneral("ReadErrFiles","DONE successfully!"); | |
283 | fclose(pChromErr); | |
284 | fclose(pGeomErr); | |
285 | fclose(pLocErr); | |
286 | } | |
287 | count = kTRUE; | |
288 | }//ReadErrFiles() | |
289 | //__________________________________________________________________________________________________ | |
290 | TVector3 AliRICHParam::SigmaSinglePhoton(Int_t partID, Double_t mom, Double_t theta, Double_t phi) | |
291 | ||
292 | { | |
293 | // Find sigma for single photon. It returns the thrree different errors. If you want | |
294 | // to have the error---> TVector3.Mag() | |
295 | // partID = 0,1,2,3,4 ---> e,mu,pi,k,p in agreement with AliPID | |
296 | TVector3 v(-999,-999,-999); | |
297 | Double_t pmom; | |
298 | ||
299 | ReadErrFiles(); | |
300 | Double_t mass = fgMass[partID]; | |
301 | Double_t massRef = fgMass[4]; // all the files are calculated for protons...so mass ref is proton mass | |
302 | pmom = mom*massRef/mass; // normalized momentum respect to proton... | |
303 | if(pmom>PmodMax()) pmom = PmodMax(); | |
304 | Double_t oneOverRefIndex = 1/RefIdxC6F14(MeanCkovEnergy()); | |
305 | Double_t pmin = mass*oneOverRefIndex/TMath::Sqrt(1-oneOverRefIndex*oneOverRefIndex); | |
306 | if(pmom<pmin) return v; | |
307 | Double_t Theta = theta*TMath::RadToDeg(); | |
308 | if(phi<0) phi+=TMath::TwoPi(); | |
309 | Double_t Phi = phi*TMath::RadToDeg(); | |
310 | v.SetX(Interpolate(fgErrChrom,pmom,Theta,Phi)); | |
311 | v.SetY(Interpolate(fgErrGeom,pmom,Theta,Phi)); | |
312 | v.SetZ(Interpolate(fgErrLoc,pmom,Theta,Phi)); | |
313 | // v*=1.5; // take into account bigger errors due to multiplicity...to change in future | |
314 | ||
315 | return v; | |
316 | }//SigmaSinglePhoton | |
317 | //__________________________________________________________________________________________________ | |
318 | TVector3 AliRICHParam::SigmaSinglePhoton(Double_t thetaCer, Double_t theta, Double_t phi) | |
319 | ||
320 | { | |
321 | // Find sigma for single photon. It returns the thrree different errors. If you want | |
322 | // to have the error---> TVector3.Mag() | |
323 | // partID = 0,1,2,3,4 ---> e,mu,pi,k,p in agreement with AliPID | |
324 | TVector3 v(-999,-999,-999); | |
325 | Double_t pmom; | |
326 | ||
327 | ReadErrFiles(); | |
328 | Double_t massRef = fgMass[4]; // all the files are calculated for protons...so mass ref is proton mass | |
329 | Double_t beta=1./(RefIdxC6F14(MeanCkovEnergy())*TMath::Cos(thetaCer)); | |
330 | if(beta>=1) { | |
331 | pmom=6.5; // above physical limi the error is calculated at the saturation... | |
332 | } else { | |
333 | Double_t gamma=1./TMath::Sqrt(1-beta*beta); | |
334 | pmom = beta*gamma*massRef; // normalized momentum respect to proton... | |
335 | } | |
336 | if(pmom>PmodMax()) pmom = PmodMax(); | |
337 | Double_t oneOverRefIndex = 1/RefIdxC6F14(MeanCkovEnergy()); | |
338 | Double_t pmin = massRef*oneOverRefIndex/TMath::Sqrt(1-oneOverRefIndex*oneOverRefIndex); | |
339 | if(pmom<pmin) return v; | |
340 | Double_t Theta = theta*TMath::RadToDeg(); | |
341 | if(phi<0) phi+=TMath::TwoPi(); | |
342 | Double_t Phi = phi*TMath::RadToDeg(); | |
343 | v.SetX(Interpolate(fgErrChrom,pmom,Theta,Phi)); | |
344 | v.SetY(Interpolate(fgErrGeom,pmom,Theta,Phi)); | |
345 | v.SetZ(Interpolate(fgErrLoc,pmom,Theta,Phi)); | |
346 | // v*=1.5; // take into account bigger errors due to multiplicity...to change in future | |
347 | ||
348 | return v; | |
349 | }//SigmaSinglePhoton | |
350 | //__________________________________________________________________________________________________ | |
351 | Double_t AliRICHParam::Interpolate(Double_t par[4][330], Double_t x, Double_t y, Double_t phi) | |
352 | ||
353 | { | |
354 | static Double_t amin = 1.15; static Double_t astep = 0.2; | |
355 | static Double_t bmin = 0; static Double_t bstep = 1; | |
356 | ||
357 | Double_t Phi = (phi - 180)/300.; | |
358 | ||
359 | Double_t Sigma[30][11]; | |
360 | ||
361 | for(Int_t j=0;j<11;j++) { for(Int_t i=0;i<30;i++) { | |
362 | Sigma[i][j] = par[0][j+11*i] + par[1][j+11*i]*Phi*Phi + par[2][j+11*i]*TMath::Power(Phi,4) + par[3][j+11*i]*TMath::Power(Phi,6); | |
363 | } | |
364 | } | |
365 | ||
366 | Int_t i=0;Int_t j=0; | |
367 | ||
368 | i = (Int_t)((x-amin)/astep); | |
369 | j = (Int_t)((y-bmin)/bstep); | |
370 | Double_t ai = amin+i*astep; | |
371 | Double_t ai1 = ai+astep; | |
372 | Double_t bj = bmin+j*bstep; | |
373 | Double_t bj1 = bj+bstep; | |
374 | Double_t t = (x-ai)/(ai1-ai); | |
375 | Double_t gj = (1-t)*Sigma[i][j]+t*Sigma[i+1][j]; | |
376 | Double_t gj1 = (1-t)*Sigma[i][j+1]+t*Sigma[i+1][j+1]; | |
377 | Double_t u = (y-bj)/(bj1-bj); | |
378 | return (1-u)*gj+u*gj1; | |
379 | }//Interpolate | |
380 | //__________________________________________________________________________________________________ | |
381 | TVector3 AliRICHParam::ForwardTracing(TVector3 entranceTrackPoint, TVector3 vectorTrack, Double_t thetaC, Double_t phiC) | |
382 | { | |
383 | // | |
384 | TVector3 vBad(-999,-999,-999); | |
385 | TVector3 nPlane(0,0,1); | |
386 | Double_t planeZposition = 0.5*Zfreon(); | |
387 | TVector3 planePoint(0,0,planeZposition); | |
388 | TVector3 emissionPoint = PlaneIntersect(vectorTrack,entranceTrackPoint,nPlane,planePoint); | |
389 | // emissionPoint.Dump(); | |
390 | Double_t thetaout,phiout; | |
391 | AnglesInDRS(vectorTrack.Theta(),vectorTrack.Phi(),thetaC,phiC,thetaout,phiout); | |
392 | // cout << "thetaout "<<thetaout << " phiout " << phiout << endl; | |
393 | TVector3 vectorPhotonInC6F14; | |
394 | vectorPhotonInC6F14.SetMagThetaPhi(1,thetaout,phiout); | |
395 | // vectorPhotonInC6F14.Dump(); | |
396 | // planeZposition=AliRICHParam::C6F14Thickness(); | |
397 | planeZposition=Zfreon(); | |
398 | planePoint.SetXYZ(0,0,planeZposition); | |
399 | TVector3 entranceToSiO2Point = PlaneIntersect(vectorPhotonInC6F14,emissionPoint,nPlane,planePoint); | |
400 | // entranceToSiO2Point.Dump(); | |
401 | ||
402 | Double_t photonEn = MeanCkovEnergy(); | |
403 | Double_t angleInSiO2 = SnellAngle(RefIdxC6F14(photonEn),RefIdxSiO2(photonEn),vectorPhotonInC6F14.Theta());if(angleInSiO2<0) return vBad; | |
404 | TVector3 vectorPhotonInSiO2; | |
405 | vectorPhotonInSiO2.SetMagThetaPhi(1,angleInSiO2,phiout); | |
406 | // planeZposition+=AliRICHParam::SiO2Thickness(); | |
407 | planeZposition+=Zwin(); | |
408 | planePoint.SetXYZ(0,0,planeZposition); | |
409 | TVector3 entranceToCH4 = PlaneIntersect(vectorPhotonInSiO2,entranceToSiO2Point,nPlane,planePoint); | |
410 | // entranceToCH4.Dump(); | |
411 | ||
412 | // Double_t angleInCH4 = SnellAngle(AliRICHParam::IndOfRefSiO2(6.755),AliRICHParam::IndOfRefCH4,angleInSiO2); | |
413 | Double_t angleInCH4 = SnellAngle(RefIdxSiO2(photonEn),RefIdxCH4(photonEn),vectorPhotonInSiO2.Theta());if(angleInCH4<0) return vBad; | |
414 | TVector3 vectorPhotonInCH4; | |
415 | vectorPhotonInCH4.SetMagThetaPhi(1,angleInCH4,phiout); | |
416 | // planeZposition+=AliRICHParam::GapProx(); | |
417 | planeZposition+=Pc2Win(); | |
418 | planePoint.SetXYZ(0,0,planeZposition); | |
419 | TVector3 impactToPC = PlaneIntersect(vectorPhotonInCH4,entranceToCH4,nPlane,planePoint); | |
420 | // impactToPC.Dump(); | |
421 | return impactToPC; | |
422 | }//FowardTracing | |
423 | //__________________________________________________________________________________________________ | |
424 | TVector3 AliRICHParam::PlaneIntersect(TVector3 vstart,TVector3 p0,TVector3 n,TVector3 v0) | |
425 | { | |
426 | // | |
427 | TVector3 parallel(-999,-999,-999); | |
428 | // vstart = given vector | |
429 | // p0 = origin of the given vector | |
430 | // n = normal to a given plane | |
431 | // v0 = point of the given plane | |
432 | // cout << " n*vstart = " << n*vstart << endl; | |
433 | if(n*vstart==0) return parallel; | |
434 | TVector3 diff=v0-p0; | |
435 | Double_t sint=(n*diff)/(n*vstart); | |
436 | return p0+sint*vstart; | |
437 | }//PlaneIntersect | |
438 | //__________________________________________________________________________________________________ | |
439 | Double_t AliRICHParam::SnellAngle(Float_t n1, Float_t n2, Float_t theta1) | |
440 | { | |
441 | // Snell law | |
442 | // Compute the Snell angle | |
443 | ||
444 | Double_t sinrefractangle; | |
445 | Double_t refractangle; | |
446 | ||
447 | sinrefractangle = (n1/n2)*sin(theta1); | |
448 | ||
449 | if(sinrefractangle>1.) { | |
450 | // cout << " PROBLEMS IN SNELL ANGLE !!!!! " << endl; | |
451 | refractangle = -999.; | |
452 | return refractangle; | |
453 | } | |
454 | ||
455 | refractangle = asin(sinrefractangle); | |
456 | return refractangle; | |
457 | }//SnellAngle | |
458 | //__________________________________________________________________________________________________ | |
459 | void AliRICHParam::AnglesInDRS(Double_t trackTheta,Double_t trackPhi,Double_t thetaCerenkov,Double_t phiCerenkov,Double_t &tout,Double_t &pout) | |
460 | { | |
461 | // Setup the rotation matrix of the track... | |
462 | ||
463 | TRotation mtheta; | |
464 | TRotation mphi; | |
465 | TRotation minv; | |
466 | TRotation mrot; | |
467 | ||
468 | mtheta.RotateY(trackTheta); | |
469 | mphi.RotateZ(trackPhi); | |
470 | ||
471 | mrot = mphi * mtheta; | |
472 | // minv = mrot.Inverse(); | |
473 | ||
474 | TVector3 photonInRadiator(1,1,1); | |
475 | ||
476 | photonInRadiator.SetTheta(thetaCerenkov); | |
477 | photonInRadiator.SetPhi(phiCerenkov); | |
478 | photonInRadiator = mrot * photonInRadiator; | |
479 | tout=photonInRadiator.Theta(); | |
480 | pout=photonInRadiator.Phi(); | |
481 | }//AnglesInDRS | |
482 | //__________________________________________________________________________________________________ | |
483 | ||
484 | //__________________________________________________________________________________________________ | |
485 | //__________________________________________________________________________________________________ | |
486 | /* | |
487 | void DrawRing() | |
488 | { | |
489 | ||
490 | // Float_t xGraph[1000],yGraph[1000]; | |
491 | ||
492 | Float_t type; | |
493 | Float_t MassOfParticle; | |
494 | Float_t beta; | |
495 | Float_t nfreon; | |
496 | ||
497 | Float_t ThetaCerenkov; | |
498 | ||
499 | Float_t Xtoentr = GetEntranceX(); | |
500 | Float_t Ytoentr = GetEntranceY(); | |
501 | ||
502 | Float_t pmod = GetTrackMomentum(); | |
503 | Float_t TrackTheta = GetTrackTheta(); | |
504 | Float_t TrackPhi = GetTrackPhi(); | |
505 | ||
506 | SetPhotonEnergy(AliRICHParam::MeanCkovEnergy()); | |
507 | SetFreonRefractiveIndex(); | |
508 | ||
509 | SetEmissionPoint(RadiatorWidth/2.); | |
510 | ||
511 | ThetaCerenkov = GetThetaCerenkov(); | |
512 | FindBetaFromTheta(ThetaCerenkov); | |
513 | nfreon = GetFreonRefractiveIndex(); | |
514 | ||
515 | Int_t nPoints = 100; | |
516 | ||
517 | Int_t nPointsToDraw = 0; | |
518 | for(Int_t i=0;i<nPoints;i++) | |
519 | { | |
520 | Float_t phpad = 2*TMath::Pi()*i/nPoints; | |
521 | SetThetaPhotonInTRS(thetacer); | |
522 | SetPhiPhotonInTRS(phpad); | |
523 | FindPhotonAnglesInDRS(); | |
524 | Float_t Radius = FromEmissionToCathode(); | |
525 | if (Radius == 999.) continue; | |
526 | xGraph[nPointsToDraw] = GetXPointOnCathode() + GetShiftX(); | |
527 | yGraph[nPointsToDraw] = GetYPointOnCathode() + GetShiftY(); | |
528 | nPointsToDraw++; | |
529 | } | |
530 | gra = new TGraph(nPointsToDraw,xGraph,yGraph); | |
531 | gra->Draw("AC"); | |
532 | } | |
533 | //__________________________________________________________________________________________________ | |
534 | */ |