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[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()
f7a1cc68 32#include "AliGeomManager.h" //AddAlignableVolumes()
33#include <AliCDBEntry.h> //CreateMaterials()
34#include <AliCDBManager.h> //CreateMaterials()
8f16e0db 35#include <TF1.h> //DefineOpticalProperties()
36#include <TF2.h> //DefineOpticalProperties()
f7a1cc68 37#include <TGeoGlobalMagField.h>
322b6a67 38#include <TGeoPhysicalNode.h> //AddAlignableVolumes()
f7a1cc68 39#include <TLorentzVector.h> //IsLostByFresnel()
c93255fe 40#include <TTree.h>
db53fc59 41
8f16e0db 42ClassImp(AliHMPIDv2)
43//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
44void AliHMPIDv2::AddAlignableVolumes()const
45{
46// Associates the symbolic volume name with the corresponding volume path. Interface method from AliModule invoked from AliMC
47// Arguments: none
48// Returns: none
db53fc59 49
50 AliGeomManager::ELayerID idHMPID = AliGeomManager::kHMPID;
51 Int_t modUID, modnum = 0;
52
322b6a67 53 TGeoHMatrix *pGm = new TGeoHMatrix;
ae5a42aa 54 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 55 pGm->SetTranslation(trans);
56
55a829a5 57 Double_t ph[7]={10.,10., 30.,30.,30. ,50.,50};
58
59 for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++) {
db53fc59 60 modUID = AliGeomManager::LayerToVolUID(idHMPID,modnum++);
61 if(!gGeoManager->SetAlignableEntry(Form("/HMPID/Chamber%i",iCh),Form("ALIC_1/Hmp_%i",iCh),modUID))
5b89b470 62 AliError("AliHMPIDv3::Unable to set alignable entry!!"); //aligment without AliCluster3D
db53fc59 63 //Get Tracking To Local matricies for alignment with AliCluster3D
64 TGeoPNEntry *eCh = gGeoManager->GetAlignableEntryByUID(modUID);
65 TGeoHMatrix *globMatrix = eCh->GetGlobalOrig();
66
67 //Double_t phi = 20.0 * ((iCh+1) / 3) + 10.0;
68 Double_t phi = ph[iCh];
69 TGeoHMatrix *t2l = new TGeoHMatrix();
70 t2l->RotateZ(phi);
71 t2l->MultiplyLeft(&(globMatrix->Inverse()));
72 eCh->SetMatrix(t2l);
73 }//iCh loop
8f16e0db 74}
75//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
76void AliHMPIDv2::CreateMaterials()
77{
78// Definition of available HMPID materials
79// Arguments: none
80// Returns: none
81 AliDebug(1,"Start v2 HMPID.");
82
83 //clm update material definition later on from Antonello
84
85//data from PDG booklet 2002 density [gr/cm^3] rad len [cm] abs len [cm]
86 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
87 Float_t aC6F14[2]={ 12.01 , 18.99} , zC6F14[2]={ 6 , 9} , wC6F14[2]={6 , 14} , dC6F14=1.68 ; Int_t nC6F14=-2;
88 Float_t aSiO2[2]={ 28.09 , 15.99} , zSiO2[2]={14 , 8} , wSiO2[2]={1 , 2} , dSiO2=2.64 ; Int_t nSiO2=-2;
89 Float_t aCH4[2]={ 12.01 , 1.01} , zCH4[2]={ 6 , 1} , wCH4[2]={1 , 4} , dCH4=7.17e-4 ; Int_t nCH4=-2;
c788bf55 90// not necessary...PCB properties instead! Float_t aCsI[2]={132.90 ,126.90} , zCsI[2]={55 ,53} , wCsI[2]={1 , 1} , dCsI=0.1 ; Int_t nCsI=-2;
8f16e0db 91
c788bf55 92 Float_t aRoha = 12.01 , zRoha = 6 , dRoha = 0.10 , radRoha = 18.80 , absRoha = 86.3/dRoha; //special material- quasi quartz
93 Float_t aCu = 63.55 , zCu = 29 , dCu = 8.96 , radCu = 1.43 , absCu = 134.9/dCu ;
94 Float_t aW =183.84 , zW = 74 , dW = 19.30 , radW = 0.35 , absW = 185.0/dW ;
95 Float_t aAl = 26.98 , zAl = 13 , dAl = 2.70 , radAl = 8.90 , absAl = 106.4/dAl ;
96 Float_t aAr = 39.94 , zAr = 18 , dAr = 1.396e-3, radAr = 14.0 , absAr = 117.2/dAr ;
97
8f16e0db 98 Int_t matId=0; //tmp material id number
99 Int_t unsens = 0, sens=1; //sensitive or unsensitive medium
f7a1cc68 100 Int_t itgfld = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ(); //type of field intergration 0 no field -1 user in guswim 1 Runge Kutta 2 helix 3 const field along z
101 Float_t maxfld = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max(); //max field value
8f16e0db 102 Float_t tmaxfd = -10.0; //max deflection angle due to magnetic field in one step
103 Float_t deemax = - 0.2; //max fractional energy loss in one step
c788bf55 104 Float_t stemax = - 0.1; //max step allowed [cm]
8f16e0db 105 Float_t epsil = 0.001; //abs tracking precision [cm]
106 Float_t stmin = - 0.001; //min step size [cm] in continius process transport, negative value: choose it automatically
c788bf55 107
108 // PCB copmposed mainly by G10 (Si,C,H,O) -> CsI is negligible (<500nm thick)
109 // So what is called CsI has the optical properties of CsI, but the composition of G-10 (for delta elec, etc production...)
110
111 Float_t aG10[4] = {28.09,12.01,1.01,16.00};
112 Float_t zG10[4] = {14., 6., 1., 8.};
113 Float_t wG10[4] = {0.129060,0.515016,0.061873,0.294050};
114 Float_t dG10 = 1.7;
115 Int_t nG10 = 4;
8f16e0db 116
117 AliMixture(++matId,"Air" ,aAir ,zAir ,dAir ,nAir ,wAir ); AliMedium(kAir ,"Air" ,matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
118 AliMixture(++matId,"C6F14",aC6F14,zC6F14,dC6F14,nC6F14,wC6F14); AliMedium(kC6F14,"C6F14",matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
119 AliMixture(++matId,"SiO2" ,aSiO2 ,zSiO2 ,dSiO2 ,nSiO2 ,wSiO2 ); AliMedium(kSiO2 ,"SiO2" ,matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
120 AliMixture(++matId,"CH4" ,aCH4 ,zCH4 ,dCH4 ,nCH4 ,wCH4 ); AliMedium(kCH4 ,"CH4" ,matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
c788bf55 121// AliMixture(++matId,"CsI" ,aCsI ,zCsI ,dCsI ,nCsI ,wCsI ); AliMedium(kCsI ,"CsI" ,matId, sens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);//sensitive
122 AliMixture(++matId,"CsI+PCB",aG10 , zG10, dG10,nG10 ,wG10 ); AliMedium(kCsI ,"CsI" ,matId, sens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);//sensitive
123
124 AliMixture(++matId ,"Neo" ,aSiO2 ,zSiO2 ,dSiO2 ,nSiO2 ,wSiO2 ); AliMedium(kNeo ,"Neo" ,matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); //clm neoceram
125 AliMaterial(++matId,"Roha",aRoha,zRoha,dRoha,radRoha,absRoha); AliMedium(kRoha ,"Roha" ,matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin); //Roha->honeycomb
126
8f16e0db 127
8f16e0db 128 AliMaterial(++matId,"Cu" ,aCu ,zCu ,dCu ,radCu ,absCu ); AliMedium(kCu ,"Cu" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
129 AliMaterial(++matId,"W" ,aW ,zW ,dW ,radW ,absW ); AliMedium(kW ,"W" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
130 AliMaterial(++matId,"Al" ,aAl ,zAl ,dAl ,radAl ,absAl ); AliMedium(kAl ,"Al" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
131 AliMaterial(++matId,"Ar" ,aAr ,zAr ,dAr ,radAr ,absAr ); AliMedium(kAr ,"Ar" , matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
c788bf55 132
cee71445 133 //InitProperties();
c788bf55 134
8f16e0db 135}//void AliHMPID::CreateMaterials()
136//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
cee71445 137//void AliHMPIDv2::InitProperties()
138//{
c788bf55 139/*
140* HMPID
141* ====
142*
143* GAM ELEC NHAD CHAD MUON EBREM MUHAB EDEL MUDEL MUPA ANNI BREM COMP DCAY DRAY HADR LOSS MULS PAIR PHOT RAYL
144* Quarz Window (>1000 keV delta-electrons)
145HMPID 3 1.e-4 1.e-4 1.e-4 -1. 1.e-4 -1. -1. 1.e-3 1.e-3 -1. -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1
146* Freon Radiator (> 500 keV delta-electrons)
147HMPID 4 1.e-4 1.e-4 1.e-4 -1. 1.e-4 -1. -1. 5.e-4 5.e-4 -1. -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1
148* Methane Gap (> 100 keV delta-electrons)
149HMPID 5 5.e-5 1.e-5 1.e-4 -1. 1.e-4 -1. -1. 1.e-4 1.e-4 -1. -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1
150* Sensitive Volume (> 50 keV delta-electrons)
151HMPID 9 1.e-5 1.e-5 1.e-4 -1. 1.e-4 -1. -1. 5.e-5 5.e-5 -1. -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1
152* CSI (> 50 keV delta-electrons)
153HMPID 6 1.e-5 1.e-5 1.e-4 -1. 1.e-4 -1. -1. 5.e-5 5.e-5 -1. -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1
154* PCB backplane (> 50 keV delta-electrons)
155HMPID 12 1.e-5 1.e-5 1.e-4 -1. 1.e-4 -1. -1. 5.e-5 5.e-5 -1. -1 -1 -1 -1 1 -1 1 -1 -1 -1 -1
cee71445 156
c788bf55 157 Int_t *idtmed = fIdtmed->GetArray();
158 Int_t imed;
159
160 imed = kSiO2; // * Quarz Window (>1000 keV delta-electrons)
161 gMC->Gstpar(idtmed[imed], "CUTGAM",1.e-4);
162 gMC->Gstpar(idtmed[imed], "CUTELE",1.e-4);
163 gMC->Gstpar(idtmed[imed], "CUTNEU",1.e-4);
164 gMC->Gstpar(idtmed[imed], "CUTMUO",1.e-4);
165 gMC->Gstpar(idtmed[imed], "DCUTE" ,1.e-3);
166 gMC->Gstpar(idtmed[imed], "CUTHAD",1.e-3);
167
168 gMC->Gstpar(idtmed[imed], "DRAY",1);
169 gMC->Gstpar(idtmed[imed], "LOSS",1);
170
171 imed = kC6F14; // * Freon Radiator (> 500 keV delta-electrons)
172 gMC->Gstpar(idtmed[imed], "CUTGAM",1.e-4);
173 gMC->Gstpar(idtmed[imed], "CUTELE",1.e-4);
174 gMC->Gstpar(idtmed[imed], "CUTNEU",1.e-4);
175 gMC->Gstpar(idtmed[imed], "CUTMUO",1.e-4);
176 gMC->Gstpar(idtmed[imed], "DCUTE" ,5.e-4);
177 gMC->Gstpar(idtmed[imed], "CUTHAD",5.e-4);
178
179 gMC->Gstpar(idtmed[imed], "DRAY",1);
180 gMC->Gstpar(idtmed[imed], "LOSS",1);
181
182 imed = kCH4; // * Methane Gap (> 100 keV delta-electrons)
183 gMC->Gstpar(idtmed[imed], "CUTGAM",5.e-5);
184 gMC->Gstpar(idtmed[imed], "CUTELE",5.e-5);
185 gMC->Gstpar(idtmed[imed], "CUTNEU",1.e-4);
186 gMC->Gstpar(idtmed[imed], "CUTMUO",1.e-4);
187 gMC->Gstpar(idtmed[imed], "DCUTE" ,1.e-4);
188 gMC->Gstpar(idtmed[imed], "CUTHAD",1.e-4);
189
190 gMC->Gstpar(idtmed[imed], "DRAY",1);
191 gMC->Gstpar(idtmed[imed], "LOSS",1);
192
193 imed = kCsI; // * CSI (> 50 keV delta-electrons)
194 gMC->Gstpar(idtmed[imed], "CUTGAM",1.e-5);
195 gMC->Gstpar(idtmed[imed], "CUTELE",1.e-5);
196 gMC->Gstpar(idtmed[imed], "CUTNEU",1.e-4);
197 gMC->Gstpar(idtmed[imed], "CUTMUO",1.e-4);
198 gMC->Gstpar(idtmed[imed], "DCUTE" ,5.e-5);
199 gMC->Gstpar(idtmed[imed], "CUTHAD",5.e-5);
200
201 gMC->Gstpar(idtmed[imed], "DRAY",1);
202 gMC->Gstpar(idtmed[imed], "LOSS",1);
203
204 imed = kAl; // * Alluminium (> 50 keV delta-electrons)
205 gMC->Gstpar(idtmed[imed], "CUTGAM",1.e-5);
206 gMC->Gstpar(idtmed[imed], "CUTELE",1.e-5);
207 gMC->Gstpar(idtmed[imed], "CUTNEU",1.e-4);
208 gMC->Gstpar(idtmed[imed], "CUTMUO",1.e-4);
209 gMC->Gstpar(idtmed[imed], "DCUTE" ,5.e-5);
210 gMC->Gstpar(idtmed[imed], "CUTHAD",5.e-5);
211
212 gMC->Gstpar(idtmed[imed], "DRAY",1);
213 gMC->Gstpar(idtmed[imed], "LOSS",1);
214
215 imed = kCu; // * Copper (> 50 keV delta-electrons)
216 gMC->Gstpar(idtmed[imed], "CUTGAM",1.e-5);
217 gMC->Gstpar(idtmed[imed], "CUTELE",1.e-5);
218 gMC->Gstpar(idtmed[imed], "CUTNEU",1.e-4);
219 gMC->Gstpar(idtmed[imed], "CUTMUO",1.e-4);
220 gMC->Gstpar(idtmed[imed], "DCUTE" ,5.e-5);
221 gMC->Gstpar(idtmed[imed], "CUTHAD",5.e-5);
222
223 gMC->Gstpar(idtmed[imed], "DRAY",1);
224 gMC->Gstpar(idtmed[imed], "LOSS",1);
225
226 imed = kW; // * Tungsten (> 50 keV delta-electrons)
227 gMC->Gstpar(idtmed[imed], "CUTGAM",1.e-5);
228 gMC->Gstpar(idtmed[imed], "CUTELE",1.e-5);
229 gMC->Gstpar(idtmed[imed], "CUTNEU",1.e-4);
230 gMC->Gstpar(idtmed[imed], "CUTMUO",1.e-4);
231 gMC->Gstpar(idtmed[imed], "DCUTE" ,5.e-5);
232 gMC->Gstpar(idtmed[imed], "CUTHAD",5.e-5);
233
234 gMC->Gstpar(idtmed[imed], "DRAY",1);
235 gMC->Gstpar(idtmed[imed], "LOSS",1);
236
cee71445 237}*/
c788bf55 238//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
8f16e0db 239void AliHMPIDv2::CreateGeometry()
240{
241//Creates detailed geometry simulation (currently GEANT volumes tree)
242 AliDebug(1,"Start main.");
243 if(!gMC->IsRootGeometrySupported()) return;
244
245 Double_t cm=1,mm=0.1*cm,um=0.001*mm;//default is cm
246
247 TGeoMedium *al =gGeoManager->GetMedium("HMPID_Al");
248 TGeoMedium *ch4 =gGeoManager->GetMedium("HMPID_CH4");
249 TGeoMedium *roha =gGeoManager->GetMedium("HMPID_Roha");
250 TGeoMedium *neoc =gGeoManager->GetMedium("HMPID_Neo");
251 TGeoMedium *c6f14=gGeoManager->GetMedium("HMPID_C6F14");
252 TGeoMedium *sio2 =gGeoManager->GetMedium("HMPID_SiO2");
253 TGeoMedium *cu =gGeoManager->GetMedium("HMPID_Cu");
254 TGeoMedium *w =gGeoManager->GetMedium("HMPID_W");
255 TGeoMedium *csi =gGeoManager->GetMedium("HMPID_CsI");
256 TGeoMedium *ar =gGeoManager->GetMedium("HMPID_Ar");
257
78bc9cb2 258 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 259
260 TString title=GetTitle();
a47b5293 261 if(title.Contains("TestBeam")){
262 gGeoManager->GetVolume("ALIC")->AddNode(hmp,0);
263 }else{
ae5a42aa 264 for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){//place 7 chambers
8f16e0db 265 TGeoHMatrix *pMatrix=new TGeoHMatrix;
a47b5293 266 IdealPosition(iCh,pMatrix);
8f16e0db 267 gGeoManager->GetVolume("ALIC")->AddNode(hmp,iCh,pMatrix);
a47b5293 268 }
269 }
8f16e0db 270
271 TGeoRotation *rot=new TGeoRotation("HwireRot"); rot->RotateY(90); //rotate wires around Y to be along X (initially along Z)
272 TGeoVolume *sbo=gGeoManager->MakeBox ("Hsbo",ch4 , 1419*mm/2 , 1378.00*mm/2 , 50.5*mm/2);//2072P1
273 TGeoVolume *cov=gGeoManager->MakeBox ("Hcov",al , 1419*mm/2 , 1378.00*mm/2 , 0.5*mm/2);
274 TGeoVolume *hon=gGeoManager->MakeBox ("Hhon",roha , 1359*mm/2 , 1318.00*mm/2 , 49.5*mm/2);
275 TGeoVolume *rad=gGeoManager->MakeBox ("Hrad",c6f14, 1330*mm/2 , 413.00*mm/2 , 24.0*mm/2); //2011P1
276 TGeoVolume *neo=gGeoManager->MakeBox ("Hneo",neoc , 1330*mm/2 , 413.00*mm/2 , 4.0*mm/2);
277 TGeoVolume *win=gGeoManager->MakeBox ("Hwin",sio2 , 1330*mm/2 , 413.00*mm/2 , 5.0*mm/2);
278 TGeoVolume *si1=gGeoManager->MakeBox ("Hsi1",sio2 , 1330*mm/2 , 5.00*mm/2 , 15.0*mm/2);
279 TGeoVolume *si2=gGeoManager->MakeBox ("Hsi2",neoc , 10*mm/2 , 403.00*mm/2 , 15.0*mm/2);
280 TGeoVolume *spa=gGeoManager->MakeTube("Hspa",sio2 , 0*mm , 5.00*mm , 15.0*mm/2);
281 TGeoVolume *fr4=gGeoManager->MakeBox ("Hfr4",ch4 , 1407*mm/2 , 1366.00*mm/2 , 15.0*mm/2);//2043P1
282 TGeoVolume *f4a=gGeoManager->MakeBox ("Hf4a",al , 1407*mm/2 , 1366.00*mm/2 , 10.0*mm/2);
283 TGeoVolume *f4i=gGeoManager->MakeBox ("Hf4i",ch4 , 1323*mm/2 , 1296.00*mm/2 , 10.0*mm/2);
284 TGeoVolume *col=gGeoManager->MakeTube("Hcol",cu , 0*mm , 100.00*um , 1323.0*mm/2);
78bc9cb2 285 TGeoVolume *sec=gGeoManager->MakeBox ("Hsec",ch4 , 648*mm/2 , 411.00*mm/2 , 6.2*mm/2);//sec=gap
286
a47b5293 287 Double_t cellx=8.04*mm,celly=8.4*mm; Int_t nPadX=80, nPadY=48;
288 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
289 TGeoVolume *row= gap->Divide ("Hrow",2,nPadY,0,0);//along Y->48 rows
290 TGeoVolume *cel= row->Divide ("Hcel",1,nPadX,0,0);//along X->80 cells
291 TGeoVolume *cat=gGeoManager->MakeTube("Hcat",cu , 0.00*mm , 50.00*um , cellx/2);
292 TGeoVolume *ano=gGeoManager->MakeTube("Hano",w , 0.00*mm , 20.00*um , cellx/2);
c788bf55 293 TGeoVolume *pad=gGeoManager->MakeBox ("Hpad",csi , 7.54*mm/2 , 7.90*mm/2 , 1.7*mm/2); //2006P1 PCB material...
78bc9cb2 294 TGeoVolume *fr1=gGeoManager->MakeBox ("Hfr1",al , 1463*mm/2 , 1422.00*mm/2 , 58.3*mm/2);//2040P1
295 TGeoVolume *fr1up=gGeoManager->MakeBox ("Hfr1up",ch4,(1426.00-37.00)*mm/2 , (1385.00-37.00)*mm/2 , 20.0*mm/2);//2040P1
296 TGeoVolume *fr1perUpBig=gGeoManager->MakeBox ("Hfr1perUpBig",ch4,1389*mm/2,35*mm/2,10*mm/2);
297 TGeoVolume *fr1perUpSma=gGeoManager->MakeBox ("Hfr1perUpSma",ch4,35*mm/2,(1385-37-2*35)*mm/2,10*mm/2);
298 TGeoVolume *fr1perDowBig=gGeoManager->MakeBox ("Hfr1perDowBig",ch4,1389*mm/2,46*mm/2,2.3*mm/2);
299 TGeoVolume *fr1perDowSma=gGeoManager->MakeBox ("Hfr1perDowSma",ch4,46*mm/2,(1385-37-2*46)*mm/2,2.3*mm/2);
300
301 TGeoVolume *ppf=gGeoManager->MakeBox ("Hppf",al , 648*mm/2 , 411.00*mm/2 , 38.3*mm/2);//2001P2
302 TGeoVolume *lar=gGeoManager->MakeBox ("Hlar",ar , 181*mm/2 , 89.25*mm/2 , 38.3*mm/2);//2001P2
303 TGeoVolume *smo=gGeoManager->MakeBox ("Hsmo",ar , 114*mm/2 , 89.25*mm/2 , 38.3*mm/2);//2001P2
304
305
ae5a42aa 306
307 TGeoVolume *fr3= gGeoManager->MakeBox("Hfr3", al, 1463*mm/2, 1422*mm/2, 34*mm/2);//2041P1
308 TGeoVolume *fr3up= gGeoManager->MakeBox("Hfr3up", ch4, 1323*mm/2, 1282*mm/2, 20*mm/2);//2041P1
309 TGeoVolume *fr3down=gGeoManager->MakeBox("Hfr3down", ch4, 1437*mm/2, 1370*mm/2, 14*mm/2);//2041P1
310
311
312
8f16e0db 313// ^ Y z= z=-12mm z=98.25mm ALIC->7xHmp (virtual)-->1xHsbo (virtual) --->2xHcov (real) 2072P1
314// | ____________________________________ | |-->1xHhon (real) 2072P1
315// | | ______ ____ ______ | |
316// | | | | | * | | | |->3xHrad (virtual) --->1xHneo (real) 2011P1
317// | |50.5mm| |24mm| * |45.5mm| | | |-->1xHwin (real) 2011P1
318// | | | | | * | | | | |-->2xHsi1 (real) 2011P1
319// | | | |____| * |______| | | |-->2xHsi2 (real) 2011P1
320// | | | ____ * ______ | | |->30xHspa (real) 2011P1
321// | | | | | * | | | |
322// | | | | | * | | | |->1xHfr4 (vitual) --->1xHf4a (real)---->1xHf4i(virtual) 2043P1
323// | | sb | | rad| * | | | | |-->322xHcol (real) 2043P1
324// | | | |____| * |______| | |
78bc9cb2 325// | | | ____ * ______ | |->1xHfr1 (real) --> 6xHppf(real) ---->8xHlar (virtual) 2001P1
326// | | | | | * | | | | |--->8xHsmo (virtual) 2001P1
8f16e0db 327// | | | | | * | | | |
78bc9cb2 328// | | | | | * | | | |-> 6xHgap (virtual) --->48xHrow (virtual) -->80xHcel (virtual) -->4xHcat (real) from p84 TDR
8f16e0db 329// | |______| |____| * |______| | |-->2xHano (real) from p84 TDR
330// |____________________________________| |-->1xHpad (real) from p84 TDR
331// --->Z
332 hmp->AddNode(sbo ,1,new TGeoTranslation( 0*mm, 0*mm, -73.75*mm)); //p.84 TDR
333 sbo->AddNode(hon ,1,new TGeoTranslation( 0*mm,0*mm, 0*mm)); //2072P1
334 sbo->AddNode(cov ,1,new TGeoTranslation( 0*mm,0*mm, +25*mm));
335 sbo->AddNode(cov ,2,new TGeoTranslation( 0*mm,0*mm, -25*mm));
336 hmp->AddNode(rad,2,new TGeoTranslation( 0*mm,+434*mm, -12.00*mm));
337 hmp->AddNode(rad,1,new TGeoTranslation( 0*mm, 0*mm, -12.00*mm));
338 hmp->AddNode(rad,0,new TGeoTranslation( 0*mm,-434*mm, -12.00*mm));
339 rad->AddNode(neo,1,new TGeoTranslation( 0*mm, 0*mm, -10.0*mm));
340 rad->AddNode(win,1,new TGeoTranslation( 0*mm, 0*mm, 9.5*mm));
341 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));
342 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));
343 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));
344 hmp->AddNode(fr4,1,new TGeoTranslation( 0*mm, 0*mm, 9.00*mm)); //p.84 TDR
345 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
346 fr4->AddNode(f4a,1,new TGeoTranslation( 0*mm,0*mm, 2.5*mm));
347 f4a->AddNode(f4i,1,new TGeoTranslation( 0*mm,0*mm, 0*mm));
78bc9cb2 348 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));
349 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));
350 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));
351 sec->AddNode(gap,1,new TGeoTranslation(0,0,0.*mm));
8f16e0db 352 cel->AddNode(cat,1,new TGeoCombiTrans (0, 3.15*mm , -2.70*mm , rot)); //4 cathode wires
353 cel->AddNode(ano,1,new TGeoCombiTrans (0, 2.00*mm , -0.29*mm , rot)); //2 anod wires
354 cel->AddNode(cat,2,new TGeoCombiTrans (0, 1.05*mm , -2.70*mm , rot));
355 cel->AddNode(cat,3,new TGeoCombiTrans (0, -1.05*mm , -2.70*mm , rot));
356 cel->AddNode(ano,2,new TGeoCombiTrans (0, -2.00*mm , -0.29*mm , rot));
357 cel->AddNode(cat,4,new TGeoCombiTrans (0, -3.15*mm , -2.70*mm , rot));
358 cel->AddNode(pad,1,new TGeoTranslation(0, 0.00*mm , 2.25*mm)); //1 pad
78bc9cb2 359
360 hmp->AddNode(fr1,1,new TGeoTranslation(0.,0.,(80.+1.7)*mm+58.3*mm/2.));
361 fr1->AddNode(fr1up,1,new TGeoTranslation(0.,0.,(58.3*mm-20.00*mm)/2.));
362
363 fr1->AddNode(fr1perUpBig,0,new TGeoTranslation(0.,(1385-37-35)*mm/2.,(58.3*mm-20.00*2*mm-10.0*mm)/2.));
364 fr1->AddNode(fr1perUpSma,0,new TGeoTranslation((1426-37-35)*mm/2.,0.,(58.3*mm-20.00*2*mm-10.0*mm)/2.));
365 fr1->AddNode(fr1perUpBig,1,new TGeoTranslation(0.,-(1385-37-35)*mm/2.,(58.3*mm-20.00*2*mm-10.0*mm)/2.));
366 fr1->AddNode(fr1perUpSma,1,new TGeoTranslation(-(1426-37-35)*mm/2.,0.,(58.3*mm-20.00*2*mm-10.0*mm)/2.));
367
368 fr1->AddNode(fr1perDowBig,0,new TGeoTranslation(0.,(1385-37-46)*mm/2.,(-58.3*mm+2.3*mm)/2.));
369 fr1->AddNode(fr1perDowSma,0,new TGeoTranslation((1426-37-46)*mm/2.,0.,(-58.3*mm+2.3*mm)/2.));
370 fr1->AddNode(fr1perDowBig,1,new TGeoTranslation(0.,-(1385-37-46)*mm/2.,(-58.3*mm+2.3*mm)/2.));
371 fr1->AddNode(fr1perDowSma,1,new TGeoTranslation(-(1426-37-46)*mm/2.,0.,(-58.3*mm+2.3*mm)/2.));
372
373
374 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.));
375 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.));
376 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.));
377
378
379
380
381
382
8f16e0db 383// ^ Y single cell 5.5mm CH4 = 1*mm CsI + 4.45*mm CsI x cath +0.05*mm safety margin
384// | ______________________________
385// | | | ^ ||
386// | | 1.05mm ||
387// 2.2*mm| xxxxxxxxxxxxxxxxxxxxxxxxxxxx |-- 50um x || cat shift x=0mm , y= 3.15mm , z=-2.70mm
388// | | ||
389// | | ||
390// __ | .......................... | 2.1mm 20un . || ano shift x=0mm , y= 2.00mm , z=-0.29mm
391// | | ||
392// | | ||
393// | xxxxxxxxxxxxxxxxxxxxxxxxxxxx |-- x || cat shift x=0mm , y= 1.05mm , z=-2.70mm
394// | | ||
395// | | 8.4mm ||
396// 4*mm | | 2.1mm || pad shift x=0mm , y= 0.00mm , z=2.25*mm
397// | | ||
398// | | ||
399// | xxxxxxxxxxxxxxxxxxxxxxxxxxxx |-- x || cat shift x=0mm , y=-1.05mm , z=-2.70mm
400// | | ||
401// | | ||
402// __ | .......................... | 2.1mm . 2.04mm|| ano shift x=0mm , y=-2.00mm , z=-0.29mm
403// | | ||
404// | | ||
405// | xxxxxxxxxxxxxxxxxxxxxxxxxxxx |-- x 4.45mm || cat shift x=0mm , y=-3.15mm , z=-2.70mm
406// 2.2*mm| | ||
407// | | 1.05mm ||
408// |______________________________| v ||
409// < 8 mm >
410// ----->X ----->Z
78bc9cb2 411 ppf->AddNode(lar,0,new TGeoTranslation(-224.5*mm,-151.875*mm, 0.*mm));
412 ppf->AddNode(lar,1,new TGeoTranslation(-224.5*mm,- 50.625*mm, 0.*mm));
413 ppf->AddNode(lar,2,new TGeoTranslation(-224.5*mm,+ 50.625*mm, 0.*mm));
414 ppf->AddNode(lar,3,new TGeoTranslation(-224.5*mm,+151.875*mm, 0.*mm));
415 ppf->AddNode(lar,4,new TGeoTranslation(+224.5*mm,-151.875*mm, 0.*mm));
416 ppf->AddNode(lar,5,new TGeoTranslation(+224.5*mm,- 50.625*mm, 0.*mm));
417 ppf->AddNode(lar,6,new TGeoTranslation(+224.5*mm,+ 50.625*mm, 0.*mm));
418 ppf->AddNode(lar,7,new TGeoTranslation(+224.5*mm,+151.875*mm, 0.*mm));
419 ppf->AddNode(smo,0,new TGeoTranslation(- 65.0*mm,-151.875*mm, 0.*mm));
420 ppf->AddNode(smo,1,new TGeoTranslation(- 65.0*mm,- 50.625*mm, 0.*mm));
421 ppf->AddNode(smo,2,new TGeoTranslation(- 65.0*mm,+ 50.625*mm, 0.*mm));
422 ppf->AddNode(smo,3,new TGeoTranslation(- 65.0*mm,+151.875*mm, 0.*mm));
423 ppf->AddNode(smo,4,new TGeoTranslation(+ 65.0*mm,-151.875*mm, 0.*mm));
424 ppf->AddNode(smo,5,new TGeoTranslation(+ 65.0*mm,- 50.625*mm, 0.*mm));
425 ppf->AddNode(smo,6,new TGeoTranslation(+ 65.0*mm,+ 50.625*mm, 0.*mm));
426 ppf->AddNode(smo,7,new TGeoTranslation(+ 65.0*mm,+151.875*mm, 0.*mm));
8f16e0db 427
ae5a42aa 428hmp->AddNode(fr3,1,new TGeoTranslation(0.,0.,(80.-29.)*mm-34.*mm/2));
429 fr3->AddNode( fr3up,1, new TGeoTranslation(0., 0., 7*mm));
430 fr3->AddNode(fr3down,1,new TGeoTranslation(0., 0., -10*mm));
8f16e0db 431
432 AliDebug(1,"Stop v2. HMPID option");
433}//CreateGeometry()
434//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
435void AliHMPIDv2::Init()
436{
c788bf55 437// This method defines ID for sensitive volumes, i.e. such geometry volumes for which there are if(gMC->CurrentVolID()==XXX)
438// statements in StepManager()
8f16e0db 439// Arguments: none
440// Returns: none
441 AliDebug(1,"Start v2 HMPID.");
442 fIdPad = gMC->VolId("Hpad");
443 fIdCell = gMC->VolId("Hcel");
444 AliDebug(1,"Stop v2 HMPID.");
445}
446//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
447void AliHMPIDv2::DefineOpticalProperties()
448{
449// Optical properties definition.
450 const Int_t kNbins=30; //number of photon energy points
451 Float_t emin=5.5,emax=8.5; //Photon energy range,[eV]
452 Float_t aEckov [kNbins];
a9cc07fb 453 Double_t dEckov [kNbins];
8f16e0db 454 Float_t aAbsRad[kNbins], aAbsWin[kNbins], aAbsGap[kNbins], aAbsMet[kNbins];
455 Float_t aIdxRad[kNbins], aIdxWin[kNbins], aIdxGap[kNbins], aIdxMet[kNbins], aIdxPc[kNbins];
456 Float_t aQeAll [kNbins], aQePc [kNbins];
a9cc07fb 457 Double_t dReflMet[kNbins], dQePc[kNbins];
8f16e0db 458
37bac312 459 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 460 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
461 TF1 *pGaIF=new TF1("HidxGap","1+0.12489e-6/(2.62e-4 - x*x/1239.84/1239.84)" ,emin,emax); //?????? from where
462
463 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
464 pRaAF->SetParameters(3.20491e16,-0.00917890,0.742402,3035.37,4.81171,0.626309);
465 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
466 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
467
468 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 469
470 TString title=GetTitle();
471 Bool_t isFlatIdx=title.Contains("FlatIdx");
472
8f16e0db 473 for(Int_t i=0;i<kNbins;i++){
474 Float_t eV=emin+0.1*i; //Ckov energy in eV
475 aEckov [i] =1e-9*eV; //Ckov energy in GeV
a9cc07fb 476 dEckov [i] = aEckov[i];
59d9d4b3 477 aAbsRad[i]=pRaAF->Eval(eV); (isFlatIdx)? aIdxRad[i]=1.292: aIdxRad[i]=pRaIF->Eval(eV,20);
478 aAbsWin[i]=pWiAF->Eval(eV); aIdxWin[i]=pWiIF->Eval(eV);
479 aAbsGap[i]=pGaAF->Eval(eV); aIdxGap[i]=pGaIF->Eval(eV);
8f16e0db 480 aQeAll[i] =1; //QE for all other materials except for PC must be 1.
481 aAbsMet[i] =0.0001; aIdxMet[i]=0; //metal ref idx must be 0 in order to reflect photon
482 aIdxPc [i]=1; aQePc [i]=pQeF->Eval(eV); //PC ref idx must be 1 in order to apply photon to QE conversion
a9cc07fb 483 dQePc [i]=pQeF->Eval(eV);
484 dReflMet[i] = 0.; // no reflection on the surface of the pc (?)
8f16e0db 485 }
486 gMC->SetCerenkov((*fIdtmed)[kC6F14] , kNbins, aEckov, aAbsRad , aQeAll , aIdxRad );
487 gMC->SetCerenkov((*fIdtmed)[kSiO2] , kNbins, aEckov, aAbsWin , aQeAll , aIdxWin );
488 gMC->SetCerenkov((*fIdtmed)[kCH4] , kNbins, aEckov, aAbsGap , aQeAll , aIdxGap );
489 gMC->SetCerenkov((*fIdtmed)[kCu] , kNbins, aEckov, aAbsMet , aQeAll , aIdxMet );
490 gMC->SetCerenkov((*fIdtmed)[kW] , kNbins, aEckov, aAbsMet , aQeAll , aIdxMet ); //n=0 means reflect photons
491 gMC->SetCerenkov((*fIdtmed)[kCsI] , kNbins, aEckov, aAbsMet , aQePc , aIdxPc ); //n=1 means convert photons
492 gMC->SetCerenkov((*fIdtmed)[kAl] , kNbins, aEckov, aAbsMet , aQeAll , aIdxMet );
a9cc07fb 493
494 // Define a skin surface for the photocatode to enable 'detection' in G4
495 gMC->DefineOpSurface("surfPc", kGlisur /*kUnified*/,kDielectric_metal,kPolished, 0.);
496 gMC->SetMaterialProperty("surfPc", "EFFICIENCY", kNbins, dEckov, dQePc);
497 gMC->SetMaterialProperty("surfPc", "REFLECTIVITY", kNbins, dEckov, dReflMet);
498 gMC->SetSkinSurface("skinPc", "Rpc", "surfPc");
499
8f16e0db 500 delete pRaAF;delete pWiAF;delete pGaAF; delete pRaIF; delete pWiIF; delete pGaIF; delete pQeF;
501}
502//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
503Bool_t AliHMPIDv2::IsLostByFresnel()
504{
505// Calculate probability for the photon to be lost by Fresnel reflection.
506 TLorentzVector p4;
507 Double_t mom[3],localMom[3];
508 gMC->TrackMomentum(p4); mom[0]=p4(1); mom[1]=p4(2); mom[2]=p4(3);
509 localMom[0]=0; localMom[1]=0; localMom[2]=0;
510 gMC->Gmtod(mom,localMom,2);
511 Double_t localTc = localMom[0]*localMom[0]+localMom[2]*localMom[2];
512 Double_t localTheta = TMath::ATan2(TMath::Sqrt(localTc),localMom[1]);
513 Double_t cotheta = TMath::Abs(TMath::Cos(localTheta));
514 if(gMC->GetRandom()->Rndm() < Fresnel(p4.E()*1e9,cotheta,1)){
515 AliDebug(1,"Photon lost");
516 return kTRUE;
517 }else
518 return kFALSE;
519}//IsLostByFresnel()
520//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
521void AliHMPIDv2::GenFee(Float_t qtot)
522{
523// Generate FeedBack photons for the current particle. To be invoked from StepManager().
524// eloss=0 means photon so only pulse height distribution is to be analysed.
525 TLorentzVector x4;
526 gMC->TrackPosition(x4);
527 Int_t iNphotons=gMC->GetRandom()->Poisson(0.02*qtot); //# of feedback photons is proportional to the charge of hit
528 AliDebug(1,Form("N photons=%i",iNphotons));
529 Int_t j;
530 Float_t cthf, phif, enfp = 0, sthf, e1[3], e2[3], e3[3], vmod, uswop,dir[3], phi,pol[3], mom[4];
531//Generate photons
532 for(Int_t i=0;i<iNphotons;i++){//feedbacks loop
533 Double_t ranf[2];
534 gMC->GetRandom()->RndmArray(2,ranf); //Sample direction
535 cthf=ranf[0]*2-1.0;
536 if(cthf<0) continue;
60e55aee 537 sthf = TMath::Sqrt((1. - cthf) * (1. + cthf));
8f16e0db 538 phif = ranf[1] * 2 * TMath::Pi();
539
540 if(Double_t randomNumber=gMC->GetRandom()->Rndm()<=0.57)
541 enfp = 7.5e-9;
542 else if(randomNumber<=0.7)
543 enfp = 6.4e-9;
544 else
545 enfp = 7.9e-9;
546
547
548 dir[0] = sthf * TMath::Sin(phif); dir[1] = cthf; dir[2] = sthf * TMath::Cos(phif);
549 gMC->Gdtom(dir, mom, 2);
550 mom[0]*=enfp; mom[1]*=enfp; mom[2]*=enfp;
551 mom[3] = TMath::Sqrt(mom[0]*mom[0]+mom[1]*mom[1]+mom[2]*mom[2]);
552
553 // Polarisation
554 e1[0]= 0; e1[1]=-dir[2]; e1[2]= dir[1];
555 e2[0]=-dir[1]; e2[1]= dir[0]; e2[2]= 0;
556 e3[0]= dir[1]; e3[1]= 0; e3[2]=-dir[0];
557
558 vmod=0;
559 for(j=0;j<3;j++) vmod+=e1[j]*e1[j];
560 if (!vmod) for(j=0;j<3;j++) {
561 uswop=e1[j];
562 e1[j]=e3[j];
563 e3[j]=uswop;
564 }
565 vmod=0;
566 for(j=0;j<3;j++) vmod+=e2[j]*e2[j];
567 if (!vmod) for(j=0;j<3;j++) {
568 uswop=e2[j];
569 e2[j]=e3[j];
570 e3[j]=uswop;
571 }
572
573 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;
574 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;
575
576 phi = gMC->GetRandom()->Rndm()* 2 * TMath::Pi();
577 for(j=0;j<3;j++) pol[j]=e1[j]*TMath::Sin(phi)+e2[j]*TMath::Cos(phi);
578 gMC->Gdtom(pol, pol, 2);
579 Int_t outputNtracksStored;
580 gAlice->GetMCApp()->PushTrack(1, //transport
581 gAlice->GetMCApp()->GetCurrentTrackNumber(),//parent track
582 50000051, //PID
583 mom[0],mom[1],mom[2],mom[3], //track momentum
584 x4.X(),x4.Y(),x4.Z(),x4.T(), //track origin
585 pol[0],pol[1],pol[2], //polarization
586 kPFeedBackPhoton, //process ID
587 outputNtracksStored, //on return how many new photons stored on stack
588 1.0); //weight
589 }//feedbacks loop
590 AliDebug(1,"Stop.");
591}//GenerateFeedbacks()
592//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
593void AliHMPIDv2::Hits2SDigits()
594{
595// Interface method ivoked from AliSimulation to create a list of sdigits corresponding to list of hits. Every hit generates one or more sdigits.
596// Arguments: none
597// Returns: none
598 AliDebug(1,"Start.");
599 for(Int_t iEvt=0;iEvt < GetLoader()->GetRunLoader()->GetNumberOfEvents();iEvt++){ //events loop
600 GetLoader()->GetRunLoader()->GetEvent(iEvt); //get next event
601
602 if(!GetLoader()->TreeH()) {GetLoader()->LoadHits(); }
603 if(!GetLoader()->TreeS()) {GetLoader()->MakeTree("S"); MakeBranch("S");}//to
604
605 for(Int_t iEnt=0;iEnt<GetLoader()->TreeH()->GetEntries();iEnt++){//prims loop
606 GetLoader()->TreeH()->GetEntry(iEnt);
607 Hit2Sdi(Hits(),SdiLst());
608 }//prims loop
609 GetLoader()->TreeS()->Fill();
610 GetLoader()->WriteSDigits("OVERWRITE");
611 SdiReset();
612 }//events loop
613 GetLoader()->UnloadHits();
614 GetLoader()->UnloadSDigits();
615 AliDebug(1,"Stop.");
616}//Hits2SDigits()
617//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
618void AliHMPIDv2::Hit2Sdi(TClonesArray *pHitLst,TClonesArray *pSdiLst)
619{
620// Converts list of hits to list of sdigits.
621// Arguments: pHitLst - list of hits provided not empty
622// pSDigLst - list of sdigits where to store the results
623// Returns: none
624 for(Int_t iHit=0;iHit<pHitLst->GetEntries();iHit++){ //hits loop
625 AliHMPIDHit *pHit=(AliHMPIDHit*)pHitLst->At(iHit); //get pointer to current hit
626 pHit->Hit2Sdi(pSdiLst); //convert this hit to list of sdigits
627 }//hits loop loop
628}//Hits2Sdi()
629//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
630void AliHMPIDv2::Digits2Raw()
631{
632// Interface method invoked by AliSimulation to create raw data streams from digits. Events loop is done in AliSimulation
633// Arguments: none
634// Returns: none
635 AliDebug(1,"Start.");
636 GetLoader()->LoadDigits();
637 TTree * treeD = GetLoader()->TreeD();
638 if(!treeD) {
639 AliError("No digits tree!");
640 return;
641 }
642 treeD->GetEntry(0);
643
21f61e25 644
aa85549f 645 AliHMPIDRawStream *pRS=0x0;
21f61e25 646 pRS->WriteRaw(DigLst());
647
8f16e0db 648 GetLoader()->UnloadDigits();
649 AliDebug(1,"Stop.");
650}//Digits2Raw()
651//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
652Float_t AliHMPIDv2::Fresnel(Float_t ene,Float_t pdoti, Bool_t pola)
653{
654// Correction for Fresnel ???????????
655// Arguments: ene - photon energy [GeV],
656// PDOTI=COS(INC.ANG.), PDOTR=COS(POL.PLANE ROT.ANG.)
657// Returns:
658 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,
659 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,
660 7.8,7.9,8.0,8.1,8.2,8.3,8.4,8.5};
661 Float_t csin[36] = {2.14,2.21,2.33,2.48,2.76,2.97,2.99,2.59,2.81,3.05,
662 2.86,2.53,2.55,2.66,2.79,2.96,3.18,3.05,2.84,2.81,2.38,2.11,
663 2.01,2.13,2.39,2.73,3.08,3.15,2.95,2.73,2.56,2.41,2.12,1.95,
664 1.72,1.53};
665 Float_t csik[36] = {0.,0.,0.,0.,0.,0.196,0.408,0.208,0.118,0.49,0.784,0.543,
666 0.424,0.404,0.371,0.514,0.922,1.102,1.139,1.376,1.461,1.253,0.878,
667 0.69,0.612,0.649,0.824,1.347,1.571,1.678,1.763,1.857,1.824,1.824,
668 1.714,1.498};
669 Float_t xe=ene;
670 Int_t j=Int_t(xe*10)-49;
671 Float_t cn=csin[j]+((csin[j+1]-csin[j])/0.1)*(xe-en[j]);
672 Float_t ck=csik[j]+((csik[j+1]-csik[j])/0.1)*(xe-en[j]);
673
674 //FORMULAE FROM HANDBOOK OF OPTICS, 33.23 OR
675 //W.R. HUNTER, J.O.S.A. 54 (1964),15 , J.O.S.A. 55(1965),1197
676
60e55aee 677 Float_t sinin=TMath::Sqrt((1.-pdoti)*(1.+pdoti));
8f16e0db 678 Float_t tanin=sinin/pdoti;
679
680 Float_t c1=cn*cn-ck*ck-sinin*sinin;
681 Float_t c2=4*cn*cn*ck*ck;
682 Float_t aO=TMath::Sqrt(0.5*(TMath::Sqrt(c1*c1+c2)+c1));
683 Float_t b2=0.5*(TMath::Sqrt(c1*c1+c2)-c1);
684
685 Float_t rs=((aO-pdoti)*(aO-pdoti)+b2)/((aO+pdoti)*(aO+pdoti)+b2);
686 Float_t rp=rs*((aO-sinin*tanin)*(aO-sinin*tanin)+b2)/((aO+sinin*tanin)*(aO+sinin*tanin)+b2);
687
688
689 //CORRECTION FACTOR FOR SURFACE ROUGHNESS
690 //B.J. STAGG APPLIED OPTICS, 30(1991),4113
691
692 Float_t sigraf=18.;
693 Float_t lamb=1240/ene;
694 Float_t fresn;
695
696 Float_t rO=TMath::Exp(-(4*TMath::Pi()*pdoti*sigraf/lamb)*(4*TMath::Pi()*pdoti*sigraf/lamb));
697
698 if(pola)
699 {
700 Float_t pdotr=0.8; //DEGREE OF POLARIZATION : 1->P , -1->S
701 fresn=0.5*(rp*(1+pdotr)+rs*(1-pdotr));
702 }
703 else
704 fresn=0.5*(rp+rs);
705
706 fresn = fresn*rO;
707 return fresn;
708}//Fresnel()
709//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
710void AliHMPIDv2::Print(Option_t *option)const
711{
712// Debug printout
713 TObject::Print(option);
714}//void AliHMPID::Print(Option_t *option)const
715//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
716Bool_t AliHMPIDv2::Raw2SDigits(AliRawReader *pRR)
717{
718// Interface methode ivoked from AliSimulation to create a list of sdigits from raw digits. Events loop is done in AliSimulation
719// Arguments: pRR- raw reader
720// Returns: kTRUE on success (currently ignored in AliSimulation::ConvertRaw2SDigits())
56c73976 721 //AliHMPIDDigit sdi; //tmp sdigit, raw digit will be converted to it
722
8f16e0db 723 if(!GetLoader()->TreeS()) {MakeTree("S"); MakeBranch("S");}
724
725 TClonesArray *pSdiLst=SdiLst(); Int_t iSdiCnt=0; //tmp list of sdigits for all chambers
21f61e25 726 AliHMPIDRawStream stream(pRR);
727 while(stream.Next())
728 {
56c73976 729 for(Int_t iPad=0;iPad<stream.GetNPads();iPad++) {
730 AliHMPIDDigit sdi(stream.GetPadArray()[iPad],stream.GetChargeArray()[iPad]);
731 new((*pSdiLst)[iSdiCnt++]) AliHMPIDDigit(sdi); //add this digit to the tmp list
732 }
733 }
21f61e25 734
8f16e0db 735 GetLoader()->TreeS()->Fill(); GetLoader()->WriteSDigits("OVERWRITE");//write out sdigits
736 SdiReset();
737 return kTRUE;
738}//Raw2SDigits
739//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
740void AliHMPIDv2::StepCount()
741{
742// Count number of ckovs created
743}
744//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
745void AliHMPIDv2::StepHistory()
746{
747// This methode is invoked from StepManager() in order to print out
748 static Int_t iStepN;
749 const char *sParticle;
750 switch(gMC->TrackPid()){
751 case kProton: sParticle="PROTON" ;break;
752 case kNeutron: sParticle="neutron" ;break;
753 case kGamma: sParticle="gamma" ;break;
754 case 50000050: sParticle="CKOV" ;break;
755 case kPi0: sParticle="Pi0" ;break;
756 case kPiPlus: sParticle="Pi+" ;break;
757 case kPiMinus: sParticle="Pi-" ;break;
758 case kElectron: sParticle="electron" ;break;
759 default: sParticle="not known" ;break;
760 }
761
762 TString flag="fanny combination";
45118213 763 if(gMC->IsTrackAlive()) {
764 if(gMC->IsTrackEntering()) flag="enters to";
765 else if(gMC->IsTrackExiting()) flag="exits from";
766 else if(gMC->IsTrackInside()) flag="inside";
767 } else {
768 if(gMC->IsTrackStop()) flag="stopped in";
769 }
8f16e0db 770
8f16e0db 771 Int_t vid=0,copy=0;
772 TString path=gMC->CurrentVolName(); path.Prepend("-");path.Prepend(gMC->CurrentVolOffName(1));//current volume and his mother are always there
773 vid=gMC->CurrentVolOffID(2,copy); if(vid) {path.Prepend("-");path.Prepend(gMC->VolName(vid));}
774 vid=gMC->CurrentVolOffID(3,copy); if(vid) {path.Prepend("-");path.Prepend(gMC->VolName(vid));}
775
776
777 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());
778
779 Double_t gMcTrackPos[3]; gMC->TrackPosition(gMcTrackPos[0],gMcTrackPos[1],gMcTrackPos[2]);
780 Double_t gMcTrackPosLoc[3]; gMC->Gmtod(gMcTrackPos,gMcTrackPosLoc,1);
781 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]);
782
783
784
785 Printf("Step %i: tid=%i flags alive=%i disap=%i enter=%i exit=%i inside=%i out=%i stop=%i new=%i",
786 iStepN, gAlice->GetMCApp()->GetCurrentTrackNumber(),
787 gMC->IsTrackAlive(), gMC->IsTrackDisappeared(),gMC->IsTrackEntering(), gMC->IsTrackExiting(),
788 gMC->IsTrackInside(),gMC->IsTrackOut(), gMC->IsTrackStop(), gMC->IsNewTrack());
789
790 Float_t a,z,den,rad,abs; a=z=den=rad=abs=-1;
791 Int_t mid=gMC->CurrentMaterial(a,z,den,rad,abs);
792 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);
793
794 TArrayI proc; gMC->StepProcesses(proc);
795 Printf("Processes in this step:");
796 for ( int i = 0 ; i < proc.GetSize(); i++)
797 {
798 Printf("%s",TMCProcessName[proc.At(i)]);
799 }
800 Printf("End process list");
801
802 iStepN++;
803}//StepHistory()
804//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
805void AliHMPIDv2::StepManager()
806{
807// Full Step Manager.
808// Arguments: none
809// Returns: none
810// StepHistory(); return; //uncomment to print tracks history
811 // StepCount(); return; //uncomment to count photons
812
813 Int_t copy; //volume copy aka node
814
815//Treat photons
816 if((gMC->TrackPid()==50000050||gMC->TrackPid()==50000051)&&gMC->CurrentVolID(copy)==fIdPad){ //photon (Ckov or feedback) hit PC (fIdPad)
817 if(gMC->Edep()>0){ //photon survided QE test i.e. produces electron
818 if(IsLostByFresnel()){ gMC->StopTrack(); return;} //photon lost due to fersnel reflection on PC
59d9d4b3 819 gMC->CurrentVolOffID(5,copy); //current chamber since geomtry tree is Hmp-Hsec-Hgap-Hrow-Hcel-Hpad
8f16e0db 820 Int_t tid= gMC->GetStack()->GetCurrentTrackNumber(); //take TID
821 Int_t pid= gMC->TrackPid(); //take PID
822 Float_t etot= gMC->Etot(); //total hpoton energy, [GeV]
823 Double_t x[3]; gMC->TrackPosition(x[0],x[1],x[2]); //take MARS position at entrance to PC
a9b5cfdf 824 Float_t hitTime= (Float_t)gMC->TrackTime(); //hit formation time
8f16e0db 825 Float_t xl,yl; AliHMPIDParam::Instance()->Mars2Lors(copy,x,xl,yl); //take LORS position
a9b5cfdf 826 new((*fHits)[fNhits++])AliHMPIDHit(copy,etot,pid,tid,xl,yl,hitTime,x); //HIT for photon, position at P, etot will be set to Q
59d9d4b3 827 if(fDoFeed) GenFee(etot); //generate feedback photons etot is modified in hit ctor to Q of hit
8f16e0db 828 }//photon hit PC and DE >0
829 }//photon hit PC
830
831//Treat charged particles
832 static Float_t eloss; //need to store mip parameters between different steps
12419ec4 833 static Double_t in[3];
834 if(gMC->IsTrackEntering() && gMC->TrackCharge() && gMC->CurrentVolID(copy)==fIdPad) //Trackref stored when entering in the pad volume
5e2a2ffa 835 AddTrackReference(gMC->GetStack()->GetCurrentTrackNumber(), AliTrackReference::kHMPID); //for acceptance calculations
8f16e0db 836 if(gMC->TrackCharge() && gMC->CurrentVolID(copy)==fIdCell){ //charged particle in amplification gap (fIdCell)
837 if(gMC->IsTrackEntering()||gMC->IsNewTrack()) { //entering or newly created
838 eloss=0; //reset Eloss collector
839 gMC->TrackPosition(in[0],in[1],in[2]); //take position at the entrance
840 }else if(gMC->IsTrackExiting()||gMC->IsTrackStop()||gMC->IsTrackDisappeared()){ //exiting or disappeared
841 eloss +=gMC->Edep(); //take into account last step Eloss
842 gMC->CurrentVolOffID(4,copy); //take current chamber since geometry tree is Hmp-Hsec-Hgap-Hrow-Hcel
843 Int_t tid= gMC->GetStack()->GetCurrentTrackNumber(); //take TID
844 Int_t pid= gMC->TrackPid(); //take PID
845 Double_t out[3]; gMC->TrackPosition(out[0],out[1],out[2]); //take MARS position at exit
a9b5cfdf 846 Float_t hitTime= (Float_t)gMC->TrackTime(); //hit formation time
8f16e0db 847 out[0]=0.5*(out[0]+in[0]); //>
848 out[1]=0.5*(out[1]+in[1]); //take hit position at the anod plane
849 out[2]=0.5*(out[2]+in[2]); //>
850 Float_t xl,yl;AliHMPIDParam::Instance()->Mars2Lors(copy,out,xl,yl); //take LORS position
a9b5cfdf 851 new((*fHits)[fNhits++])AliHMPIDHit(copy,eloss,pid,tid,xl,yl,hitTime,out); //HIT for MIP, position near anod plane, eloss will be set to Q
59d9d4b3 852 if(fDoFeed) GenFee(eloss); //generate feedback photons
8f16e0db 853 }else //just going inside
854 eloss += gMC->Edep(); //collect this step eloss
855 }//MIP in GAP
856}//StepManager()
857//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
80c418c4 858void AliHMPIDv2::TestPoint(Int_t ch,Float_t x,Float_t y)
859{
860// Utility method to check the validity of geometry by poviding some crucial points
861// Arguments: ch,x,y- crucial point definition (cm) in LORS
862// Returns: none
863 Double_t mars[3];
864 AliHMPIDParam::Instance()->Lors2Mars(ch,x,y,mars);
865 Printf("(ch=%i,locX=%.2f,locY=%.2f) %s",ch,x,y,gGeoManager->FindNode(mars[0],mars[1],mars[2])->GetName());
866}//TestPoint()
867//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
868void AliHMPIDv2::TestGeom()
869{
a137507f 870//
871// Test method to check geometry
872//
e4290ede 873 //TGeoManager::Import("misaligned_geometry.root");
874 TGeoManager::Import("geometry.root");
ae5a42aa 875 for(Int_t ch=AliHMPIDParam::kMinCh;ch<=AliHMPIDParam::kMaxCh;ch++)
80c418c4 876 TestPoint(ch,0,0);
a137507f 877}//TestPoint()
a47b5293 878//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
879
880void AliHMPIDv2::IdealPosition(Int_t iCh,TGeoHMatrix *pMatrix) //ideal position of given chamber
881{
882// Construct ideal position matrix for a given chamber
883// Arguments: iCh- chamber ID; pMatrix- pointer to precreated unity matrix where to store the results
884// Returns: none
885 const Double_t kAngHor=19.5; // horizontal angle between chambers 19.5 grad
886 const Double_t kAngVer=20; // vertical angle between chambers 20 grad
887 const Double_t kAngCom=30; // common HMPID rotation with respect to x axis 30 grad
888 const Double_t kTrans[3]={490,0,0}; // center of the chamber is on window-gap surface
889 pMatrix->RotateY(90); // rotate around y since initial position is in XY plane -> now in YZ plane
890 pMatrix->SetTranslation(kTrans); // now plane in YZ is shifted along x
891 switch(iCh){
892 case 0: pMatrix->RotateY(kAngHor); pMatrix->RotateZ(-kAngVer); break; //right and down
893 case 1: pMatrix->RotateZ(-kAngVer); break; //down
894 case 2: pMatrix->RotateY(kAngHor); break; //right
895 case 3: break; //no rotation
896 case 4: pMatrix->RotateY(-kAngHor); break; //left
897 case 5: pMatrix->RotateZ(kAngVer); break; //up
898 case 6: pMatrix->RotateY(-kAngHor); pMatrix->RotateZ(kAngVer); break; //left and up
899 }
900 pMatrix->RotateZ(kAngCom); //apply common rotation in XY plane
901}