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