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typo fixed: HMP_DET/HMP_ENV/HMP_ENV_TENV.actual.value
[u/mrichter/AliRoot.git] / HMPID / AliHMPIDv2.cxx
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8f16e0db 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
16
a137507f 17#include "AliHMPIDv2.h" //class header
18#include "AliHMPIDParam.h" //StepManager()
19#include "AliHMPIDHit.h" //Hits2SDigs(),StepManager()
20#include "AliHMPIDDigit.h" //Digits2Raw(), Raw2SDigits()
21f61e25 21#include "AliHMPIDRawStream.h" //Digits2Raw(), Raw2SDigits()
a137507f 22#include "AliRawReader.h" //Raw2SDigits()
5e2a2ffa 23#include "AliTrackReference.h"
a137507f 24#include <TVirtualMC.h> //StepManager() for gMC
25#include <TPDGCode.h> //StepHistory()
26#include <AliStack.h> //StepManager(),Hits2SDigits()78.6
8f16e0db 27#include <AliLoader.h> //Hits2SDigits()
28#include <AliRunLoader.h> //Hits2SDigits()
8f16e0db 29#include <AliMC.h> //StepManager()
30#include <AliRun.h> //CreateMaterials()
31#include <AliMagF.h> //CreateMaterials()
32#include <TGeoManager.h> //CreateGeometry()
33#include <TF1.h> //DefineOpticalProperties()
34#include <TF2.h> //DefineOpticalProperties()
35#include <TLorentzVector.h> //IsLostByFresnel()
36#include <AliCDBManager.h> //CreateMaterials()
37#include <AliCDBEntry.h> //CreateMaterials()
322b6a67 38#include <TGeoPhysicalNode.h> //AddAlignableVolumes()
8f16e0db 39
40ClassImp(AliHMPIDv2)
41//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
42void AliHMPIDv2::AddAlignableVolumes()const
43{
44// Associates the symbolic volume name with the corresponding volume path. Interface method from AliModule invoked from AliMC
45// Arguments: none
46// Returns: none
322b6a67 47
48 TGeoHMatrix *pGm = new TGeoHMatrix;
ae5a42aa 49 Double_t trans[3]={0.5*131.24,0.5*126.16,0}; //translation from LORS to TGeo RS (half size AllX, half size allY,0)
322b6a67 50 pGm->SetTranslation(trans);
51
55a829a5 52 Double_t ph[7]={10.,10., 30.,30.,30. ,50.,50};
53
54 for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++) {
55 gGeoManager->SetAlignableEntry(Form("/HMPID/Chamber%i",iCh),Form("ALIC_1/Hmp_%i",iCh)); //aligment without AliCluster3D
56 //Get Tracking To Local matrcies for alignment with AliCluster3D
57 TGeoPNEntry *eCh = gGeoManager->GetAlignableEntry(Form("/HMPID/Chamber%i",iCh));
58 if (eCh) {
59 const char *path = eCh->GetTitle();
60 if (!gGeoManager->cd(path)) {
61 AliFatal(Form("Volume path %s not valid!",path));
62 }
63 TGeoHMatrix *globMatrix = gGeoManager->GetCurrentMatrix();
64 //Double_t phi = 20.0 * ((iCh+1) / 3) + 10.0;
65 Double_t phi = ph[iCh];
66 TGeoHMatrix *t2l = new TGeoHMatrix();
67 t2l->RotateZ(phi);
68 t2l->MultiplyLeft(&(globMatrix->Inverse()));
69 eCh->SetMatrix(t2l);
70 }//eCh
71 else {
72 AliError(Form("Alignable entry /HMPID/Chamber%i is not valid!",iCh));
73 }
74 }//iCh loop
8f16e0db 75}
76//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
77void AliHMPIDv2::CreateMaterials()
78{
79// Definition of available HMPID materials
80// Arguments: none
81// Returns: none
82 AliDebug(1,"Start v2 HMPID.");
83
84 //clm update material definition later on from Antonello
85
86//data from PDG booklet 2002 density [gr/cm^3] rad len [cm] abs len [cm]
87 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
88 Float_t aC6F14[2]={ 12.01 , 18.99} , zC6F14[2]={ 6 , 9} , wC6F14[2]={6 , 14} , dC6F14=1.68 ; Int_t nC6F14=-2;
89 Float_t aSiO2[2]={ 28.09 , 15.99} , zSiO2[2]={14 , 8} , wSiO2[2]={1 , 2} , dSiO2=2.64 ; Int_t nSiO2=-2;
90 Float_t aCH4[2]={ 12.01 , 1.01} , zCH4[2]={ 6 , 1} , wCH4[2]={1 , 4} , dCH4=7.17e-4 ; Int_t nCH4=-2;
91 Float_t aCsI[2]={132.90 ,126.90} , zCsI[2]={55 ,53} , wCsI[2]={1 , 1} , dCsI=0.1 ; Int_t nCsI=-2;
92
93 Float_t aRoha= 12.01 , zRoha= 6 , dRoha= 0.10 , radRoha= 18.80 , absRoha= 86.3/dRoha; //special material- quasi quartz
94 Float_t aCu= 63.55 , zCu= 29 , dCu= 8.96 , radCu= 1.43 , absCu= 134.9/dCu ;
95 Float_t aW=183.84 , zW= 74 , dW= 19.30 , radW= 0.35 , absW= 185.0/dW ;
96 Float_t aAl= 26.98 , zAl= 13 , dAl= 2.70 , radAl= 8.90 , absAl= 106.4/dAl ;
97 Float_t aAr= 39.94 , zAr= 18 , dAr= 1.396e-3, radAr= 14.0 , absAr= 117.2/dAr ;
98
99 Int_t matId=0; //tmp material id number
100 Int_t unsens = 0, sens=1; //sensitive or unsensitive medium
101 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
102 Float_t maxfld = gAlice->Field()->Max(); //max field value
103 Float_t tmaxfd = -10.0; //max deflection angle due to magnetic field in one step
104 Float_t deemax = - 0.2; //max fractional energy loss in one step
105 Float_t stemax = - 0.1; //mas step allowed [cm]
106 Float_t epsil = 0.001; //abs tracking precision [cm]
107 Float_t stmin = - 0.001; //min step size [cm] in continius process transport, negative value: choose it automatically
108
109 AliMixture(++matId,"Air" ,aAir ,zAir ,dAir ,nAir ,wAir ); AliMedium(kAir ,"Air" ,matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
110 AliMixture(++matId,"C6F14",aC6F14,zC6F14,dC6F14,nC6F14,wC6F14); AliMedium(kC6F14,"C6F14",matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
111 AliMixture(++matId,"SiO2" ,aSiO2 ,zSiO2 ,dSiO2 ,nSiO2 ,wSiO2 ); AliMedium(kSiO2 ,"SiO2" ,matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
112 AliMixture(++matId,"CH4" ,aCH4 ,zCH4 ,dCH4 ,nCH4 ,wCH4 ); AliMedium(kCH4 ,"CH4" ,matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
113 AliMixture(++matId,"CsI" ,aCsI ,zCsI ,dCsI ,nCsI ,wCsI ); AliMedium(kCsI ,"CsI" ,matId, sens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);//sensitive
114
115 AliMixture(++matId ,"Neo" ,aSiO2 ,zSiO2 ,dSiO2 ,nSiO2 ,wSiO2 ); AliMedium(kNeo,"Neo" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); //clm neoceram
116 AliMaterial(++matId,"Roha",aRoha,zRoha,dRoha,radRoha,absRoha); AliMedium(kRoha,"Roha", matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); //Roha->honeycomb
117
118
119 AliMaterial(++matId,"Cu" ,aCu ,zCu ,dCu ,radCu ,absCu ); AliMedium(kCu ,"Cu" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
120 AliMaterial(++matId,"W" ,aW ,zW ,dW ,radW ,absW ); AliMedium(kW ,"W" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
121 AliMaterial(++matId,"Al" ,aAl ,zAl ,dAl ,radAl ,absAl ); AliMedium(kAl ,"Al" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
122 AliMaterial(++matId,"Ar" ,aAr ,zAr ,dAr ,radAr ,absAr ); AliMedium(kAr ,"Ar" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
8f16e0db 123}//void AliHMPID::CreateMaterials()
124//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
125void AliHMPIDv2::CreateGeometry()
126{
127//Creates detailed geometry simulation (currently GEANT volumes tree)
128 AliDebug(1,"Start main.");
129 if(!gMC->IsRootGeometrySupported()) return;
130
131 Double_t cm=1,mm=0.1*cm,um=0.001*mm;//default is cm
132
133 TGeoMedium *al =gGeoManager->GetMedium("HMPID_Al");
134 TGeoMedium *ch4 =gGeoManager->GetMedium("HMPID_CH4");
135 TGeoMedium *roha =gGeoManager->GetMedium("HMPID_Roha");
136 TGeoMedium *neoc =gGeoManager->GetMedium("HMPID_Neo");
137 TGeoMedium *c6f14=gGeoManager->GetMedium("HMPID_C6F14");
138 TGeoMedium *sio2 =gGeoManager->GetMedium("HMPID_SiO2");
139 TGeoMedium *cu =gGeoManager->GetMedium("HMPID_Cu");
140 TGeoMedium *w =gGeoManager->GetMedium("HMPID_W");
141 TGeoMedium *csi =gGeoManager->GetMedium("HMPID_CsI");
142 TGeoMedium *ar =gGeoManager->GetMedium("HMPID_Ar");
143
78bc9cb2 144 TGeoVolume *hmp=gGeoManager->MakeBox ("Hmp",ch4,1681*mm/2, 1466*mm/2,(2*80*mm+2*60*mm)/2);//2033P1 z from p84 TDR
8f16e0db 145
146 TString title=GetTitle();
a47b5293 147 if(title.Contains("TestBeam")){
148 gGeoManager->GetVolume("ALIC")->AddNode(hmp,0);
149 }else{
ae5a42aa 150 for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){//place 7 chambers
8f16e0db 151 TGeoHMatrix *pMatrix=new TGeoHMatrix;
a47b5293 152 IdealPosition(iCh,pMatrix);
8f16e0db 153 gGeoManager->GetVolume("ALIC")->AddNode(hmp,iCh,pMatrix);
a47b5293 154 }
155 }
8f16e0db 156
157 TGeoRotation *rot=new TGeoRotation("HwireRot"); rot->RotateY(90); //rotate wires around Y to be along X (initially along Z)
158 TGeoVolume *sbo=gGeoManager->MakeBox ("Hsbo",ch4 , 1419*mm/2 , 1378.00*mm/2 , 50.5*mm/2);//2072P1
159 TGeoVolume *cov=gGeoManager->MakeBox ("Hcov",al , 1419*mm/2 , 1378.00*mm/2 , 0.5*mm/2);
160 TGeoVolume *hon=gGeoManager->MakeBox ("Hhon",roha , 1359*mm/2 , 1318.00*mm/2 , 49.5*mm/2);
161 TGeoVolume *rad=gGeoManager->MakeBox ("Hrad",c6f14, 1330*mm/2 , 413.00*mm/2 , 24.0*mm/2); //2011P1
162 TGeoVolume *neo=gGeoManager->MakeBox ("Hneo",neoc , 1330*mm/2 , 413.00*mm/2 , 4.0*mm/2);
163 TGeoVolume *win=gGeoManager->MakeBox ("Hwin",sio2 , 1330*mm/2 , 413.00*mm/2 , 5.0*mm/2);
164 TGeoVolume *si1=gGeoManager->MakeBox ("Hsi1",sio2 , 1330*mm/2 , 5.00*mm/2 , 15.0*mm/2);
165 TGeoVolume *si2=gGeoManager->MakeBox ("Hsi2",neoc , 10*mm/2 , 403.00*mm/2 , 15.0*mm/2);
166 TGeoVolume *spa=gGeoManager->MakeTube("Hspa",sio2 , 0*mm , 5.00*mm , 15.0*mm/2);
167 TGeoVolume *fr4=gGeoManager->MakeBox ("Hfr4",ch4 , 1407*mm/2 , 1366.00*mm/2 , 15.0*mm/2);//2043P1
168 TGeoVolume *f4a=gGeoManager->MakeBox ("Hf4a",al , 1407*mm/2 , 1366.00*mm/2 , 10.0*mm/2);
169 TGeoVolume *f4i=gGeoManager->MakeBox ("Hf4i",ch4 , 1323*mm/2 , 1296.00*mm/2 , 10.0*mm/2);
170 TGeoVolume *col=gGeoManager->MakeTube("Hcol",cu , 0*mm , 100.00*um , 1323.0*mm/2);
78bc9cb2 171 TGeoVolume *sec=gGeoManager->MakeBox ("Hsec",ch4 , 648*mm/2 , 411.00*mm/2 , 6.2*mm/2);//sec=gap
172
a47b5293 173 Double_t cellx=8.04*mm,celly=8.4*mm; Int_t nPadX=80, nPadY=48;
174 TGeoVolume *gap=gGeoManager->MakeBox ("Hgap",ch4 , cellx*nPadX/2 , celly*nPadY/2 , 6.2*mm/2); //x=8.04*80 y=8.4*48 z=pad+pad-ano+marign 2006p1
175 TGeoVolume *row= gap->Divide ("Hrow",2,nPadY,0,0);//along Y->48 rows
176 TGeoVolume *cel= row->Divide ("Hcel",1,nPadX,0,0);//along X->80 cells
177 TGeoVolume *cat=gGeoManager->MakeTube("Hcat",cu , 0.00*mm , 50.00*um , cellx/2);
178 TGeoVolume *ano=gGeoManager->MakeTube("Hano",w , 0.00*mm , 20.00*um , cellx/2);
179 TGeoVolume *pad=gGeoManager->MakeBox ("Hpad",csi , 7.54*mm/2 , 7.90*mm/2 , 1.7*mm/2); //2006P1
78bc9cb2 180 TGeoVolume *fr1=gGeoManager->MakeBox ("Hfr1",al , 1463*mm/2 , 1422.00*mm/2 , 58.3*mm/2);//2040P1
181 TGeoVolume *fr1up=gGeoManager->MakeBox ("Hfr1up",ch4,(1426.00-37.00)*mm/2 , (1385.00-37.00)*mm/2 , 20.0*mm/2);//2040P1
182 TGeoVolume *fr1perUpBig=gGeoManager->MakeBox ("Hfr1perUpBig",ch4,1389*mm/2,35*mm/2,10*mm/2);
183 TGeoVolume *fr1perUpSma=gGeoManager->MakeBox ("Hfr1perUpSma",ch4,35*mm/2,(1385-37-2*35)*mm/2,10*mm/2);
184 TGeoVolume *fr1perDowBig=gGeoManager->MakeBox ("Hfr1perDowBig",ch4,1389*mm/2,46*mm/2,2.3*mm/2);
185 TGeoVolume *fr1perDowSma=gGeoManager->MakeBox ("Hfr1perDowSma",ch4,46*mm/2,(1385-37-2*46)*mm/2,2.3*mm/2);
186
187 TGeoVolume *ppf=gGeoManager->MakeBox ("Hppf",al , 648*mm/2 , 411.00*mm/2 , 38.3*mm/2);//2001P2
188 TGeoVolume *lar=gGeoManager->MakeBox ("Hlar",ar , 181*mm/2 , 89.25*mm/2 , 38.3*mm/2);//2001P2
189 TGeoVolume *smo=gGeoManager->MakeBox ("Hsmo",ar , 114*mm/2 , 89.25*mm/2 , 38.3*mm/2);//2001P2
190
191
ae5a42aa 192
193 TGeoVolume *fr3= gGeoManager->MakeBox("Hfr3", al, 1463*mm/2, 1422*mm/2, 34*mm/2);//2041P1
194 TGeoVolume *fr3up= gGeoManager->MakeBox("Hfr3up", ch4, 1323*mm/2, 1282*mm/2, 20*mm/2);//2041P1
195 TGeoVolume *fr3down=gGeoManager->MakeBox("Hfr3down", ch4, 1437*mm/2, 1370*mm/2, 14*mm/2);//2041P1
196
197
198
8f16e0db 199// ^ Y z= z=-12mm z=98.25mm ALIC->7xHmp (virtual)-->1xHsbo (virtual) --->2xHcov (real) 2072P1
200// | ____________________________________ | |-->1xHhon (real) 2072P1
201// | | ______ ____ ______ | |
202// | | | | | * | | | |->3xHrad (virtual) --->1xHneo (real) 2011P1
203// | |50.5mm| |24mm| * |45.5mm| | | |-->1xHwin (real) 2011P1
204// | | | | | * | | | | |-->2xHsi1 (real) 2011P1
205// | | | |____| * |______| | | |-->2xHsi2 (real) 2011P1
206// | | | ____ * ______ | | |->30xHspa (real) 2011P1
207// | | | | | * | | | |
208// | | | | | * | | | |->1xHfr4 (vitual) --->1xHf4a (real)---->1xHf4i(virtual) 2043P1
209// | | sb | | rad| * | | | | |-->322xHcol (real) 2043P1
210// | | | |____| * |______| | |
78bc9cb2 211// | | | ____ * ______ | |->1xHfr1 (real) --> 6xHppf(real) ---->8xHlar (virtual) 2001P1
212// | | | | | * | | | | |--->8xHsmo (virtual) 2001P1
8f16e0db 213// | | | | | * | | | |
78bc9cb2 214// | | | | | * | | | |-> 6xHgap (virtual) --->48xHrow (virtual) -->80xHcel (virtual) -->4xHcat (real) from p84 TDR
8f16e0db 215// | |______| |____| * |______| | |-->2xHano (real) from p84 TDR
216// |____________________________________| |-->1xHpad (real) from p84 TDR
217// --->Z
218 hmp->AddNode(sbo ,1,new TGeoTranslation( 0*mm, 0*mm, -73.75*mm)); //p.84 TDR
219 sbo->AddNode(hon ,1,new TGeoTranslation( 0*mm,0*mm, 0*mm)); //2072P1
220 sbo->AddNode(cov ,1,new TGeoTranslation( 0*mm,0*mm, +25*mm));
221 sbo->AddNode(cov ,2,new TGeoTranslation( 0*mm,0*mm, -25*mm));
222 hmp->AddNode(rad,2,new TGeoTranslation( 0*mm,+434*mm, -12.00*mm));
223 hmp->AddNode(rad,1,new TGeoTranslation( 0*mm, 0*mm, -12.00*mm));
224 hmp->AddNode(rad,0,new TGeoTranslation( 0*mm,-434*mm, -12.00*mm));
225 rad->AddNode(neo,1,new TGeoTranslation( 0*mm, 0*mm, -10.0*mm));
226 rad->AddNode(win,1,new TGeoTranslation( 0*mm, 0*mm, 9.5*mm));
227 rad->AddNode(si1,1,new TGeoTranslation( 0*mm,-204*mm, -0.5*mm)); rad->AddNode(si1,2,new TGeoTranslation( 0*mm,+204*mm, -0.5*mm));
228 rad->AddNode(si2,1,new TGeoTranslation(-660*mm, 0*mm, -0.5*mm)); rad->AddNode(si2,2,new TGeoTranslation(+660*mm, 0*mm, -0.5*mm));
229 for(Int_t i=0;i<3;i++) for(Int_t j=0;j<10;j++) rad->AddNode(spa,10*i+j,new TGeoTranslation(-1330*mm/2+116*mm+j*122*mm,(i-1)*105*mm,-0.5*mm));
230 hmp->AddNode(fr4,1,new TGeoTranslation( 0*mm, 0*mm, 9.00*mm)); //p.84 TDR
231 for(int i=1;i<=322;i++) fr4->AddNode(col,i,new TGeoCombiTrans( 0*mm, -1296/2*mm+i*4*mm,-5*mm,rot)); //F4 2043P1
232 fr4->AddNode(f4a,1,new TGeoTranslation( 0*mm,0*mm, 2.5*mm));
233 f4a->AddNode(f4i,1,new TGeoTranslation( 0*mm,0*mm, 0*mm));
78bc9cb2 234 hmp->AddNode(sec,4,new TGeoTranslation(-335*mm,+433*mm, 78.6*mm)); hmp->AddNode(sec,5,new TGeoTranslation(+335*mm,+433*mm, 78.6*mm));
235 hmp->AddNode(sec,2,new TGeoTranslation(-335*mm, 0*mm, 78.6*mm)); hmp->AddNode(sec,3,new TGeoTranslation(+335*mm, 0*mm, 78.6*mm));
236 hmp->AddNode(sec,0,new TGeoTranslation(-335*mm,-433*mm, 78.6*mm)); hmp->AddNode(sec,1,new TGeoTranslation(+335*mm,-433*mm, 78.6*mm));
237 sec->AddNode(gap,1,new TGeoTranslation(0,0,0.*mm));
8f16e0db 238 cel->AddNode(cat,1,new TGeoCombiTrans (0, 3.15*mm , -2.70*mm , rot)); //4 cathode wires
239 cel->AddNode(ano,1,new TGeoCombiTrans (0, 2.00*mm , -0.29*mm , rot)); //2 anod wires
240 cel->AddNode(cat,2,new TGeoCombiTrans (0, 1.05*mm , -2.70*mm , rot));
241 cel->AddNode(cat,3,new TGeoCombiTrans (0, -1.05*mm , -2.70*mm , rot));
242 cel->AddNode(ano,2,new TGeoCombiTrans (0, -2.00*mm , -0.29*mm , rot));
243 cel->AddNode(cat,4,new TGeoCombiTrans (0, -3.15*mm , -2.70*mm , rot));
244 cel->AddNode(pad,1,new TGeoTranslation(0, 0.00*mm , 2.25*mm)); //1 pad
78bc9cb2 245
246 hmp->AddNode(fr1,1,new TGeoTranslation(0.,0.,(80.+1.7)*mm+58.3*mm/2.));
247 fr1->AddNode(fr1up,1,new TGeoTranslation(0.,0.,(58.3*mm-20.00*mm)/2.));
248
249 fr1->AddNode(fr1perUpBig,0,new TGeoTranslation(0.,(1385-37-35)*mm/2.,(58.3*mm-20.00*2*mm-10.0*mm)/2.));
250 fr1->AddNode(fr1perUpSma,0,new TGeoTranslation((1426-37-35)*mm/2.,0.,(58.3*mm-20.00*2*mm-10.0*mm)/2.));
251 fr1->AddNode(fr1perUpBig,1,new TGeoTranslation(0.,-(1385-37-35)*mm/2.,(58.3*mm-20.00*2*mm-10.0*mm)/2.));
252 fr1->AddNode(fr1perUpSma,1,new TGeoTranslation(-(1426-37-35)*mm/2.,0.,(58.3*mm-20.00*2*mm-10.0*mm)/2.));
253
254 fr1->AddNode(fr1perDowBig,0,new TGeoTranslation(0.,(1385-37-46)*mm/2.,(-58.3*mm+2.3*mm)/2.));
255 fr1->AddNode(fr1perDowSma,0,new TGeoTranslation((1426-37-46)*mm/2.,0.,(-58.3*mm+2.3*mm)/2.));
256 fr1->AddNode(fr1perDowBig,1,new TGeoTranslation(0.,-(1385-37-46)*mm/2.,(-58.3*mm+2.3*mm)/2.));
257 fr1->AddNode(fr1perDowSma,1,new TGeoTranslation(-(1426-37-46)*mm/2.,0.,(-58.3*mm+2.3*mm)/2.));
258
259
260 fr1->AddNode(ppf,4,new TGeoTranslation(-335*mm,433*mm,(-58.3+38.3)*mm/2.)); fr1->AddNode(ppf,5,new TGeoTranslation(335*mm,433*mm,(-58.3+38.3)*mm/2.));
261 fr1->AddNode(ppf,2,new TGeoTranslation(-335*mm,0.,(-58.3+38.3)*mm/2.)); fr1->AddNode(ppf,3,new TGeoTranslation(335*mm,0.,(-58.3+38.3)*mm/2.));
262 fr1->AddNode(ppf,0,new TGeoTranslation(-335*mm,-433*mm,(-58.3+38.3)*mm/2.)); fr1->AddNode(ppf,1,new TGeoTranslation(335*mm,-433*mm,(-58.3+38.3)*mm/2.));
263
264
265
266
267
268
8f16e0db 269// ^ Y single cell 5.5mm CH4 = 1*mm CsI + 4.45*mm CsI x cath +0.05*mm safety margin
270// | ______________________________
271// | | | ^ ||
272// | | 1.05mm ||
273// 2.2*mm| xxxxxxxxxxxxxxxxxxxxxxxxxxxx |-- 50um x || cat shift x=0mm , y= 3.15mm , z=-2.70mm
274// | | ||
275// | | ||
276// __ | .......................... | 2.1mm 20un . || ano shift x=0mm , y= 2.00mm , z=-0.29mm
277// | | ||
278// | | ||
279// | xxxxxxxxxxxxxxxxxxxxxxxxxxxx |-- x || cat shift x=0mm , y= 1.05mm , z=-2.70mm
280// | | ||
281// | | 8.4mm ||
282// 4*mm | | 2.1mm || pad shift x=0mm , y= 0.00mm , z=2.25*mm
283// | | ||
284// | | ||
285// | xxxxxxxxxxxxxxxxxxxxxxxxxxxx |-- x || cat shift x=0mm , y=-1.05mm , z=-2.70mm
286// | | ||
287// | | ||
288// __ | .......................... | 2.1mm . 2.04mm|| ano shift x=0mm , y=-2.00mm , z=-0.29mm
289// | | ||
290// | | ||
291// | xxxxxxxxxxxxxxxxxxxxxxxxxxxx |-- x 4.45mm || cat shift x=0mm , y=-3.15mm , z=-2.70mm
292// 2.2*mm| | ||
293// | | 1.05mm ||
294// |______________________________| v ||
295// < 8 mm >
296// ----->X ----->Z
78bc9cb2 297 ppf->AddNode(lar,0,new TGeoTranslation(-224.5*mm,-151.875*mm, 0.*mm));
298 ppf->AddNode(lar,1,new TGeoTranslation(-224.5*mm,- 50.625*mm, 0.*mm));
299 ppf->AddNode(lar,2,new TGeoTranslation(-224.5*mm,+ 50.625*mm, 0.*mm));
300 ppf->AddNode(lar,3,new TGeoTranslation(-224.5*mm,+151.875*mm, 0.*mm));
301 ppf->AddNode(lar,4,new TGeoTranslation(+224.5*mm,-151.875*mm, 0.*mm));
302 ppf->AddNode(lar,5,new TGeoTranslation(+224.5*mm,- 50.625*mm, 0.*mm));
303 ppf->AddNode(lar,6,new TGeoTranslation(+224.5*mm,+ 50.625*mm, 0.*mm));
304 ppf->AddNode(lar,7,new TGeoTranslation(+224.5*mm,+151.875*mm, 0.*mm));
305 ppf->AddNode(smo,0,new TGeoTranslation(- 65.0*mm,-151.875*mm, 0.*mm));
306 ppf->AddNode(smo,1,new TGeoTranslation(- 65.0*mm,- 50.625*mm, 0.*mm));
307 ppf->AddNode(smo,2,new TGeoTranslation(- 65.0*mm,+ 50.625*mm, 0.*mm));
308 ppf->AddNode(smo,3,new TGeoTranslation(- 65.0*mm,+151.875*mm, 0.*mm));
309 ppf->AddNode(smo,4,new TGeoTranslation(+ 65.0*mm,-151.875*mm, 0.*mm));
310 ppf->AddNode(smo,5,new TGeoTranslation(+ 65.0*mm,- 50.625*mm, 0.*mm));
311 ppf->AddNode(smo,6,new TGeoTranslation(+ 65.0*mm,+ 50.625*mm, 0.*mm));
312 ppf->AddNode(smo,7,new TGeoTranslation(+ 65.0*mm,+151.875*mm, 0.*mm));
8f16e0db 313
ae5a42aa 314hmp->AddNode(fr3,1,new TGeoTranslation(0.,0.,(80.-29.)*mm-34.*mm/2));
315 fr3->AddNode( fr3up,1, new TGeoTranslation(0., 0., 7*mm));
316 fr3->AddNode(fr3down,1,new TGeoTranslation(0., 0., -10*mm));
8f16e0db 317
318 AliDebug(1,"Stop v2. HMPID option");
319}//CreateGeometry()
320//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
321void AliHMPIDv2::Init()
322{
323// This methode defines ID for sensitive volumes, i.e. such geometry volumes for which there are if(gMC->CurrentVolID()==XXX) statements in StepManager()
324// Arguments: none
325// Returns: none
326 AliDebug(1,"Start v2 HMPID.");
327 fIdPad = gMC->VolId("Hpad");
328 fIdCell = gMC->VolId("Hcel");
329 AliDebug(1,"Stop v2 HMPID.");
330}
331//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
332void AliHMPIDv2::DefineOpticalProperties()
333{
334// Optical properties definition.
335 const Int_t kNbins=30; //number of photon energy points
336 Float_t emin=5.5,emax=8.5; //Photon energy range,[eV]
337 Float_t aEckov [kNbins];
a9cc07fb 338 Double_t dEckov [kNbins];
8f16e0db 339 Float_t aAbsRad[kNbins], aAbsWin[kNbins], aAbsGap[kNbins], aAbsMet[kNbins];
340 Float_t aIdxRad[kNbins], aIdxWin[kNbins], aIdxGap[kNbins], aIdxMet[kNbins], aIdxPc[kNbins];
341 Float_t aQeAll [kNbins], aQePc [kNbins];
a9cc07fb 342 Double_t dReflMet[kNbins], dQePc[kNbins];
8f16e0db 343
37bac312 344 TF2 *pRaIF=new TF2("HidxRad","sqrt(1+0.554*(1239.84/x)^2/((1239.84/x)^2-5769)-0.0005*(y-20))" ,emin,emax,0,50); //DiMauro mail temp 0-50 degrees C
8f16e0db 345 TF1 *pWiIF=new TF1("HidxWin","sqrt(1+46.411/(10.666*10.666-x*x)+228.71/(18.125*18.125-x*x))" ,emin,emax); //SiO2 idx TDR p.35
346 TF1 *pGaIF=new TF1("HidxGap","1+0.12489e-6/(2.62e-4 - x*x/1239.84/1239.84)" ,emin,emax); //?????? from where
347
348 TF1 *pRaAF=new TF1("HabsRad","(x<7.8)*(gaus+gaus(3))+(x>=7.8)*0.0001" ,emin,emax); //fit from DiMauro data 28.10.03
349 pRaAF->SetParameters(3.20491e16,-0.00917890,0.742402,3035.37,4.81171,0.626309);
350 TF1 *pWiAF=new TF1("HabsWin","(x<8.2)*(818.8638-301.0436*x+36.89642*x*x-1.507555*x*x*x)+(x>=8.2)*0.0001" ,emin,emax); //fit from DiMauro data 28.10.03
351 TF1 *pGaAF=new TF1("HabsGap","(x<7.75)*6512.399+(x>=7.75)*3.90743e-2/(-1.655279e-1+6.307392e-2*x-8.011441e-3*x*x+3.392126e-4*x*x*x)",emin,emax); //????? from where
352
353 TF1 *pQeF =new TF1("Hqe" ,"0+(x>6.07267)*0.344811*(1-exp(-1.29730*(x-6.07267)))" ,emin,emax); //fit from DiMauro data 28.10.03
59d9d4b3 354
355 TString title=GetTitle();
356 Bool_t isFlatIdx=title.Contains("FlatIdx");
357
8f16e0db 358 for(Int_t i=0;i<kNbins;i++){
359 Float_t eV=emin+0.1*i; //Ckov energy in eV
360 aEckov [i] =1e-9*eV; //Ckov energy in GeV
a9cc07fb 361 dEckov [i] = aEckov[i];
59d9d4b3 362 aAbsRad[i]=pRaAF->Eval(eV); (isFlatIdx)? aIdxRad[i]=1.292: aIdxRad[i]=pRaIF->Eval(eV,20);
363 aAbsWin[i]=pWiAF->Eval(eV); aIdxWin[i]=pWiIF->Eval(eV);
364 aAbsGap[i]=pGaAF->Eval(eV); aIdxGap[i]=pGaIF->Eval(eV);
8f16e0db 365 aQeAll[i] =1; //QE for all other materials except for PC must be 1.
366 aAbsMet[i] =0.0001; aIdxMet[i]=0; //metal ref idx must be 0 in order to reflect photon
367 aIdxPc [i]=1; aQePc [i]=pQeF->Eval(eV); //PC ref idx must be 1 in order to apply photon to QE conversion
a9cc07fb 368 dQePc [i]=pQeF->Eval(eV);
369 dReflMet[i] = 0.; // no reflection on the surface of the pc (?)
8f16e0db 370 }
371 gMC->SetCerenkov((*fIdtmed)[kC6F14] , kNbins, aEckov, aAbsRad , aQeAll , aIdxRad );
372 gMC->SetCerenkov((*fIdtmed)[kSiO2] , kNbins, aEckov, aAbsWin , aQeAll , aIdxWin );
373 gMC->SetCerenkov((*fIdtmed)[kCH4] , kNbins, aEckov, aAbsGap , aQeAll , aIdxGap );
374 gMC->SetCerenkov((*fIdtmed)[kCu] , kNbins, aEckov, aAbsMet , aQeAll , aIdxMet );
375 gMC->SetCerenkov((*fIdtmed)[kW] , kNbins, aEckov, aAbsMet , aQeAll , aIdxMet ); //n=0 means reflect photons
376 gMC->SetCerenkov((*fIdtmed)[kCsI] , kNbins, aEckov, aAbsMet , aQePc , aIdxPc ); //n=1 means convert photons
377 gMC->SetCerenkov((*fIdtmed)[kAl] , kNbins, aEckov, aAbsMet , aQeAll , aIdxMet );
a9cc07fb 378
379 // Define a skin surface for the photocatode to enable 'detection' in G4
380 gMC->DefineOpSurface("surfPc", kGlisur /*kUnified*/,kDielectric_metal,kPolished, 0.);
381 gMC->SetMaterialProperty("surfPc", "EFFICIENCY", kNbins, dEckov, dQePc);
382 gMC->SetMaterialProperty("surfPc", "REFLECTIVITY", kNbins, dEckov, dReflMet);
383 gMC->SetSkinSurface("skinPc", "Rpc", "surfPc");
384
8f16e0db 385 delete pRaAF;delete pWiAF;delete pGaAF; delete pRaIF; delete pWiIF; delete pGaIF; delete pQeF;
386}
387//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
388Bool_t AliHMPIDv2::IsLostByFresnel()
389{
390// Calculate probability for the photon to be lost by Fresnel reflection.
391 TLorentzVector p4;
392 Double_t mom[3],localMom[3];
393 gMC->TrackMomentum(p4); mom[0]=p4(1); mom[1]=p4(2); mom[2]=p4(3);
394 localMom[0]=0; localMom[1]=0; localMom[2]=0;
395 gMC->Gmtod(mom,localMom,2);
396 Double_t localTc = localMom[0]*localMom[0]+localMom[2]*localMom[2];
397 Double_t localTheta = TMath::ATan2(TMath::Sqrt(localTc),localMom[1]);
398 Double_t cotheta = TMath::Abs(TMath::Cos(localTheta));
399 if(gMC->GetRandom()->Rndm() < Fresnel(p4.E()*1e9,cotheta,1)){
400 AliDebug(1,"Photon lost");
401 return kTRUE;
402 }else
403 return kFALSE;
404}//IsLostByFresnel()
405//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
406void AliHMPIDv2::GenFee(Float_t qtot)
407{
408// Generate FeedBack photons for the current particle. To be invoked from StepManager().
409// eloss=0 means photon so only pulse height distribution is to be analysed.
410 TLorentzVector x4;
411 gMC->TrackPosition(x4);
412 Int_t iNphotons=gMC->GetRandom()->Poisson(0.02*qtot); //# of feedback photons is proportional to the charge of hit
413 AliDebug(1,Form("N photons=%i",iNphotons));
414 Int_t j;
415 Float_t cthf, phif, enfp = 0, sthf, e1[3], e2[3], e3[3], vmod, uswop,dir[3], phi,pol[3], mom[4];
416//Generate photons
417 for(Int_t i=0;i<iNphotons;i++){//feedbacks loop
418 Double_t ranf[2];
419 gMC->GetRandom()->RndmArray(2,ranf); //Sample direction
420 cthf=ranf[0]*2-1.0;
421 if(cthf<0) continue;
422 sthf = TMath::Sqrt((1 - cthf) * (1 + cthf));
423 phif = ranf[1] * 2 * TMath::Pi();
424
425 if(Double_t randomNumber=gMC->GetRandom()->Rndm()<=0.57)
426 enfp = 7.5e-9;
427 else if(randomNumber<=0.7)
428 enfp = 6.4e-9;
429 else
430 enfp = 7.9e-9;
431
432
433 dir[0] = sthf * TMath::Sin(phif); dir[1] = cthf; dir[2] = sthf * TMath::Cos(phif);
434 gMC->Gdtom(dir, mom, 2);
435 mom[0]*=enfp; mom[1]*=enfp; mom[2]*=enfp;
436 mom[3] = TMath::Sqrt(mom[0]*mom[0]+mom[1]*mom[1]+mom[2]*mom[2]);
437
438 // Polarisation
439 e1[0]= 0; e1[1]=-dir[2]; e1[2]= dir[1];
440 e2[0]=-dir[1]; e2[1]= dir[0]; e2[2]= 0;
441 e3[0]= dir[1]; e3[1]= 0; e3[2]=-dir[0];
442
443 vmod=0;
444 for(j=0;j<3;j++) vmod+=e1[j]*e1[j];
445 if (!vmod) for(j=0;j<3;j++) {
446 uswop=e1[j];
447 e1[j]=e3[j];
448 e3[j]=uswop;
449 }
450 vmod=0;
451 for(j=0;j<3;j++) vmod+=e2[j]*e2[j];
452 if (!vmod) for(j=0;j<3;j++) {
453 uswop=e2[j];
454 e2[j]=e3[j];
455 e3[j]=uswop;
456 }
457
458 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;
459 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;
460
461 phi = gMC->GetRandom()->Rndm()* 2 * TMath::Pi();
462 for(j=0;j<3;j++) pol[j]=e1[j]*TMath::Sin(phi)+e2[j]*TMath::Cos(phi);
463 gMC->Gdtom(pol, pol, 2);
464 Int_t outputNtracksStored;
465 gAlice->GetMCApp()->PushTrack(1, //transport
466 gAlice->GetMCApp()->GetCurrentTrackNumber(),//parent track
467 50000051, //PID
468 mom[0],mom[1],mom[2],mom[3], //track momentum
469 x4.X(),x4.Y(),x4.Z(),x4.T(), //track origin
470 pol[0],pol[1],pol[2], //polarization
471 kPFeedBackPhoton, //process ID
472 outputNtracksStored, //on return how many new photons stored on stack
473 1.0); //weight
474 }//feedbacks loop
475 AliDebug(1,"Stop.");
476}//GenerateFeedbacks()
477//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
478void AliHMPIDv2::Hits2SDigits()
479{
480// Interface method ivoked from AliSimulation to create a list of sdigits corresponding to list of hits. Every hit generates one or more sdigits.
481// Arguments: none
482// Returns: none
483 AliDebug(1,"Start.");
484 for(Int_t iEvt=0;iEvt < GetLoader()->GetRunLoader()->GetNumberOfEvents();iEvt++){ //events loop
485 GetLoader()->GetRunLoader()->GetEvent(iEvt); //get next event
486
487 if(!GetLoader()->TreeH()) {GetLoader()->LoadHits(); }
488 if(!GetLoader()->TreeS()) {GetLoader()->MakeTree("S"); MakeBranch("S");}//to
489
490 for(Int_t iEnt=0;iEnt<GetLoader()->TreeH()->GetEntries();iEnt++){//prims loop
491 GetLoader()->TreeH()->GetEntry(iEnt);
492 Hit2Sdi(Hits(),SdiLst());
493 }//prims loop
494 GetLoader()->TreeS()->Fill();
495 GetLoader()->WriteSDigits("OVERWRITE");
496 SdiReset();
497 }//events loop
498 GetLoader()->UnloadHits();
499 GetLoader()->UnloadSDigits();
500 AliDebug(1,"Stop.");
501}//Hits2SDigits()
502//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
503void AliHMPIDv2::Hit2Sdi(TClonesArray *pHitLst,TClonesArray *pSdiLst)
504{
505// Converts list of hits to list of sdigits.
506// Arguments: pHitLst - list of hits provided not empty
507// pSDigLst - list of sdigits where to store the results
508// Returns: none
509 for(Int_t iHit=0;iHit<pHitLst->GetEntries();iHit++){ //hits loop
510 AliHMPIDHit *pHit=(AliHMPIDHit*)pHitLst->At(iHit); //get pointer to current hit
511 pHit->Hit2Sdi(pSdiLst); //convert this hit to list of sdigits
512 }//hits loop loop
513}//Hits2Sdi()
514//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
515void AliHMPIDv2::Digits2Raw()
516{
517// Interface method invoked by AliSimulation to create raw data streams from digits. Events loop is done in AliSimulation
518// Arguments: none
519// Returns: none
520 AliDebug(1,"Start.");
521 GetLoader()->LoadDigits();
522 TTree * treeD = GetLoader()->TreeD();
523 if(!treeD) {
524 AliError("No digits tree!");
525 return;
526 }
527 treeD->GetEntry(0);
528
21f61e25 529
aa85549f 530 AliHMPIDRawStream *pRS=0x0;
21f61e25 531 pRS->WriteRaw(DigLst());
532
8f16e0db 533 GetLoader()->UnloadDigits();
534 AliDebug(1,"Stop.");
535}//Digits2Raw()
536//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
537Float_t AliHMPIDv2::Fresnel(Float_t ene,Float_t pdoti, Bool_t pola)
538{
539// Correction for Fresnel ???????????
540// Arguments: ene - photon energy [GeV],
541// PDOTI=COS(INC.ANG.), PDOTR=COS(POL.PLANE ROT.ANG.)
542// Returns:
543 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,
544 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,
545 7.8,7.9,8.0,8.1,8.2,8.3,8.4,8.5};
546 Float_t csin[36] = {2.14,2.21,2.33,2.48,2.76,2.97,2.99,2.59,2.81,3.05,
547 2.86,2.53,2.55,2.66,2.79,2.96,3.18,3.05,2.84,2.81,2.38,2.11,
548 2.01,2.13,2.39,2.73,3.08,3.15,2.95,2.73,2.56,2.41,2.12,1.95,
549 1.72,1.53};
550 Float_t csik[36] = {0.,0.,0.,0.,0.,0.196,0.408,0.208,0.118,0.49,0.784,0.543,
551 0.424,0.404,0.371,0.514,0.922,1.102,1.139,1.376,1.461,1.253,0.878,
552 0.69,0.612,0.649,0.824,1.347,1.571,1.678,1.763,1.857,1.824,1.824,
553 1.714,1.498};
554 Float_t xe=ene;
555 Int_t j=Int_t(xe*10)-49;
556 Float_t cn=csin[j]+((csin[j+1]-csin[j])/0.1)*(xe-en[j]);
557 Float_t ck=csik[j]+((csik[j+1]-csik[j])/0.1)*(xe-en[j]);
558
559 //FORMULAE FROM HANDBOOK OF OPTICS, 33.23 OR
560 //W.R. HUNTER, J.O.S.A. 54 (1964),15 , J.O.S.A. 55(1965),1197
561
562 Float_t sinin=TMath::Sqrt(1-pdoti*pdoti);
563 Float_t tanin=sinin/pdoti;
564
565 Float_t c1=cn*cn-ck*ck-sinin*sinin;
566 Float_t c2=4*cn*cn*ck*ck;
567 Float_t aO=TMath::Sqrt(0.5*(TMath::Sqrt(c1*c1+c2)+c1));
568 Float_t b2=0.5*(TMath::Sqrt(c1*c1+c2)-c1);
569
570 Float_t rs=((aO-pdoti)*(aO-pdoti)+b2)/((aO+pdoti)*(aO+pdoti)+b2);
571 Float_t rp=rs*((aO-sinin*tanin)*(aO-sinin*tanin)+b2)/((aO+sinin*tanin)*(aO+sinin*tanin)+b2);
572
573
574 //CORRECTION FACTOR FOR SURFACE ROUGHNESS
575 //B.J. STAGG APPLIED OPTICS, 30(1991),4113
576
577 Float_t sigraf=18.;
578 Float_t lamb=1240/ene;
579 Float_t fresn;
580
581 Float_t rO=TMath::Exp(-(4*TMath::Pi()*pdoti*sigraf/lamb)*(4*TMath::Pi()*pdoti*sigraf/lamb));
582
583 if(pola)
584 {
585 Float_t pdotr=0.8; //DEGREE OF POLARIZATION : 1->P , -1->S
586 fresn=0.5*(rp*(1+pdotr)+rs*(1-pdotr));
587 }
588 else
589 fresn=0.5*(rp+rs);
590
591 fresn = fresn*rO;
592 return fresn;
593}//Fresnel()
594//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
595void AliHMPIDv2::Print(Option_t *option)const
596{
597// Debug printout
598 TObject::Print(option);
599}//void AliHMPID::Print(Option_t *option)const
600//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
601Bool_t AliHMPIDv2::Raw2SDigits(AliRawReader *pRR)
602{
603// Interface methode ivoked from AliSimulation to create a list of sdigits from raw digits. Events loop is done in AliSimulation
604// Arguments: pRR- raw reader
605// Returns: kTRUE on success (currently ignored in AliSimulation::ConvertRaw2SDigits())
21f61e25 606
8f16e0db 607 AliHMPIDDigit sdi; //tmp sdigit, raw digit will be converted to it
8f16e0db 608 if(!GetLoader()->TreeS()) {MakeTree("S"); MakeBranch("S");}
609
610 TClonesArray *pSdiLst=SdiLst(); Int_t iSdiCnt=0; //tmp list of sdigits for all chambers
21f61e25 611 AliHMPIDRawStream stream(pRR);
612 while(stream.Next())
613 {
614 UInt_t ddl=stream.GetDDLNumber(); //returns 0,1,2 ... 13
615 for(Int_t row = 1; row <=AliHMPIDRawStream::kNRows; row++){
616 for(Int_t dil = 1; dil <=AliHMPIDRawStream::kNDILOGICAdd; dil++){
617 for(Int_t pad = 0; pad < AliHMPIDRawStream::kNPadAdd; pad++){
618 if(stream.GetCharge(ddl,row,dil,pad)<1) continue;
619 AliHMPIDDigit sdi(stream.GetPad(ddl,row,dil,pad),stream.GetCharge(ddl,row,dil,pad));
620 new((*pSdiLst)[iSdiCnt++]) AliHMPIDDigit(sdi); //add this digit to the tmp list
621 }//pad
622 }//dil
623 }//row
624 }
625
8f16e0db 626 GetLoader()->TreeS()->Fill(); GetLoader()->WriteSDigits("OVERWRITE");//write out sdigits
627 SdiReset();
628 return kTRUE;
629}//Raw2SDigits
630//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
631void AliHMPIDv2::StepCount()
632{
633// Count number of ckovs created
634}
635//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
636void AliHMPIDv2::StepHistory()
637{
638// This methode is invoked from StepManager() in order to print out
639 static Int_t iStepN;
640 const char *sParticle;
641 switch(gMC->TrackPid()){
642 case kProton: sParticle="PROTON" ;break;
643 case kNeutron: sParticle="neutron" ;break;
644 case kGamma: sParticle="gamma" ;break;
645 case 50000050: sParticle="CKOV" ;break;
646 case kPi0: sParticle="Pi0" ;break;
647 case kPiPlus: sParticle="Pi+" ;break;
648 case kPiMinus: sParticle="Pi-" ;break;
649 case kElectron: sParticle="electron" ;break;
650 default: sParticle="not known" ;break;
651 }
652
653 TString flag="fanny combination";
654 if(gMC->IsTrackAlive())
655 if(gMC->IsTrackEntering()) flag="enters to";
656 else if(gMC->IsTrackExiting()) flag="exits from";
657 else if(gMC->IsTrackInside()) flag="inside";
658 else
659 if(gMC->IsTrackStop()) flag="stoped in";
660
8f16e0db 661 Int_t vid=0,copy=0;
662 TString path=gMC->CurrentVolName(); path.Prepend("-");path.Prepend(gMC->CurrentVolOffName(1));//current volume and his mother are always there
663 vid=gMC->CurrentVolOffID(2,copy); if(vid) {path.Prepend("-");path.Prepend(gMC->VolName(vid));}
664 vid=gMC->CurrentVolOffID(3,copy); if(vid) {path.Prepend("-");path.Prepend(gMC->VolName(vid));}
665
666
667 Printf("Step %i: %s (%i) %s %s m=%.6f GeV q=%.1f dEdX=%.4f Etot=%.4f",iStepN,sParticle,gMC->TrackPid(),flag.Data(),path.Data(),gMC->TrackMass(),gMC->TrackCharge(),gMC->Edep()*1e9,gMC->Etot());
668
669 Double_t gMcTrackPos[3]; gMC->TrackPosition(gMcTrackPos[0],gMcTrackPos[1],gMcTrackPos[2]);
670 Double_t gMcTrackPosLoc[3]; gMC->Gmtod(gMcTrackPos,gMcTrackPosLoc,1);
671 Printf("gMC Track Position (MARS) x: %5.3lf, y: %5.3lf, z: %5.3lf (r: %5.3lf) ---> (LOC) x: %5.3f, y: %5.3f, z: %5.3f",gMcTrackPos[0],gMcTrackPos[1],gMcTrackPos[2],TMath::Sqrt(gMcTrackPos[0]*gMcTrackPos[0]+gMcTrackPos[1]*gMcTrackPos[1]+gMcTrackPos[2]*gMcTrackPos[2]),gMcTrackPosLoc[0],gMcTrackPosLoc[1],gMcTrackPosLoc[2]);
672
673
674
675 Printf("Step %i: tid=%i flags alive=%i disap=%i enter=%i exit=%i inside=%i out=%i stop=%i new=%i",
676 iStepN, gAlice->GetMCApp()->GetCurrentTrackNumber(),
677 gMC->IsTrackAlive(), gMC->IsTrackDisappeared(),gMC->IsTrackEntering(), gMC->IsTrackExiting(),
678 gMC->IsTrackInside(),gMC->IsTrackOut(), gMC->IsTrackStop(), gMC->IsNewTrack());
679
680 Float_t a,z,den,rad,abs; a=z=den=rad=abs=-1;
681 Int_t mid=gMC->CurrentMaterial(a,z,den,rad,abs);
682 Printf("Step %i: mid=%i a=%7.2f z=%7.2f den=%9.4f rad=%9.2f abs=%9.2f\n\n",iStepN,mid,a,z,den,rad,abs);
683
684 TArrayI proc; gMC->StepProcesses(proc);
685 Printf("Processes in this step:");
686 for ( int i = 0 ; i < proc.GetSize(); i++)
687 {
688 Printf("%s",TMCProcessName[proc.At(i)]);
689 }
690 Printf("End process list");
691
692 iStepN++;
693}//StepHistory()
694//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
695void AliHMPIDv2::StepManager()
696{
697// Full Step Manager.
698// Arguments: none
699// Returns: none
700// StepHistory(); return; //uncomment to print tracks history
701 // StepCount(); return; //uncomment to count photons
702
703 Int_t copy; //volume copy aka node
704
705//Treat photons
706 if((gMC->TrackPid()==50000050||gMC->TrackPid()==50000051)&&gMC->CurrentVolID(copy)==fIdPad){ //photon (Ckov or feedback) hit PC (fIdPad)
707 if(gMC->Edep()>0){ //photon survided QE test i.e. produces electron
708 if(IsLostByFresnel()){ gMC->StopTrack(); return;} //photon lost due to fersnel reflection on PC
59d9d4b3 709 gMC->CurrentVolOffID(5,copy); //current chamber since geomtry tree is Hmp-Hsec-Hgap-Hrow-Hcel-Hpad
8f16e0db 710 Int_t tid= gMC->GetStack()->GetCurrentTrackNumber(); //take TID
711 Int_t pid= gMC->TrackPid(); //take PID
712 Float_t etot= gMC->Etot(); //total hpoton energy, [GeV]
713 Double_t x[3]; gMC->TrackPosition(x[0],x[1],x[2]); //take MARS position at entrance to PC
714 Float_t xl,yl; AliHMPIDParam::Instance()->Mars2Lors(copy,x,xl,yl); //take LORS position
8f16e0db 715 new((*fHits)[fNhits++])AliHMPIDHit(copy,etot,pid,tid,xl,yl,x); //HIT for photon, position at P, etot will be set to Q
59d9d4b3 716 if(fDoFeed) GenFee(etot); //generate feedback photons etot is modified in hit ctor to Q of hit
8f16e0db 717 }//photon hit PC and DE >0
718 }//photon hit PC
719
720//Treat charged particles
721 static Float_t eloss; //need to store mip parameters between different steps
12419ec4 722 static Double_t in[3];
723 if(gMC->IsTrackEntering() && gMC->TrackCharge() && gMC->CurrentVolID(copy)==fIdPad) //Trackref stored when entering in the pad volume
5e2a2ffa 724 AddTrackReference(gMC->GetStack()->GetCurrentTrackNumber(), AliTrackReference::kHMPID); //for acceptance calculations
8f16e0db 725 if(gMC->TrackCharge() && gMC->CurrentVolID(copy)==fIdCell){ //charged particle in amplification gap (fIdCell)
726 if(gMC->IsTrackEntering()||gMC->IsNewTrack()) { //entering or newly created
727 eloss=0; //reset Eloss collector
728 gMC->TrackPosition(in[0],in[1],in[2]); //take position at the entrance
729 }else if(gMC->IsTrackExiting()||gMC->IsTrackStop()||gMC->IsTrackDisappeared()){ //exiting or disappeared
730 eloss +=gMC->Edep(); //take into account last step Eloss
731 gMC->CurrentVolOffID(4,copy); //take current chamber since geometry tree is Hmp-Hsec-Hgap-Hrow-Hcel
732 Int_t tid= gMC->GetStack()->GetCurrentTrackNumber(); //take TID
733 Int_t pid= gMC->TrackPid(); //take PID
734 Double_t out[3]; gMC->TrackPosition(out[0],out[1],out[2]); //take MARS position at exit
735 out[0]=0.5*(out[0]+in[0]); //>
736 out[1]=0.5*(out[1]+in[1]); //take hit position at the anod plane
737 out[2]=0.5*(out[2]+in[2]); //>
738 Float_t xl,yl;AliHMPIDParam::Instance()->Mars2Lors(copy,out,xl,yl); //take LORS position
8f16e0db 739 new((*fHits)[fNhits++])AliHMPIDHit(copy,eloss,pid,tid,xl,yl,out); //HIT for MIP, position near anod plane, eloss will be set to Q
59d9d4b3 740 if(fDoFeed) GenFee(eloss); //generate feedback photons
8f16e0db 741 }else //just going inside
742 eloss += gMC->Edep(); //collect this step eloss
743 }//MIP in GAP
744}//StepManager()
745//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
80c418c4 746void AliHMPIDv2::TestPoint(Int_t ch,Float_t x,Float_t y)
747{
748// Utility method to check the validity of geometry by poviding some crucial points
749// Arguments: ch,x,y- crucial point definition (cm) in LORS
750// Returns: none
751 Double_t mars[3];
752 AliHMPIDParam::Instance()->Lors2Mars(ch,x,y,mars);
753 Printf("(ch=%i,locX=%.2f,locY=%.2f) %s",ch,x,y,gGeoManager->FindNode(mars[0],mars[1],mars[2])->GetName());
754}//TestPoint()
755//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
756void AliHMPIDv2::TestGeom()
757{
a137507f 758//
759// Test method to check geometry
760//
e4290ede 761 //TGeoManager::Import("misaligned_geometry.root");
762 TGeoManager::Import("geometry.root");
ae5a42aa 763 for(Int_t ch=AliHMPIDParam::kMinCh;ch<=AliHMPIDParam::kMaxCh;ch++)
80c418c4 764 TestPoint(ch,0,0);
a137507f 765}//TestPoint()
a47b5293 766//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
767
768void AliHMPIDv2::IdealPosition(Int_t iCh,TGeoHMatrix *pMatrix) //ideal position of given chamber
769{
770// Construct ideal position matrix for a given chamber
771// Arguments: iCh- chamber ID; pMatrix- pointer to precreated unity matrix where to store the results
772// Returns: none
773 const Double_t kAngHor=19.5; // horizontal angle between chambers 19.5 grad
774 const Double_t kAngVer=20; // vertical angle between chambers 20 grad
775 const Double_t kAngCom=30; // common HMPID rotation with respect to x axis 30 grad
776 const Double_t kTrans[3]={490,0,0}; // center of the chamber is on window-gap surface
777 pMatrix->RotateY(90); // rotate around y since initial position is in XY plane -> now in YZ plane
778 pMatrix->SetTranslation(kTrans); // now plane in YZ is shifted along x
779 switch(iCh){
780 case 0: pMatrix->RotateY(kAngHor); pMatrix->RotateZ(-kAngVer); break; //right and down
781 case 1: pMatrix->RotateZ(-kAngVer); break; //down
782 case 2: pMatrix->RotateY(kAngHor); break; //right
783 case 3: break; //no rotation
784 case 4: pMatrix->RotateY(-kAngHor); break; //left
785 case 5: pMatrix->RotateZ(kAngVer); break; //up
786 case 6: pMatrix->RotateY(-kAngHor); pMatrix->RotateZ(kAngVer); break; //left and up
787 }
788 pMatrix->RotateZ(kAngCom); //apply common rotation in XY plane
789}