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4c039060 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
b2a60966 16/* $Id$ */
17
d15a28e7 18//_________________________________________________________________________
b2a60966 19// Base Class for PHOS description:
20// PHOS consists of a PbWO4 calorimeter (EMCA) and a gazeous charged
21// particles detector (CPV or PPSD).
22// The only provided method here is CreateMaterials,
23// which defines the materials common to all PHOS versions.
24//
25//*-- Author: Laurent Aphecetche & Yves Schutz (SUBATECH)
d15a28e7 26//////////////////////////////////////////////////////////////////////////////
e84be1eb 27
fe4da5cc 28// --- ROOT system ---
fe4da5cc 29
30// --- Standard library ---
fe4da5cc 31
d15a28e7 32// --- AliRoot header files ---
33
fe4da5cc 34#include "AliPHOS.h"
d15a28e7 35#include "AliMC.h"
fe4da5cc 36#include "AliRun.h"
fe4da5cc 37
fe4da5cc 38ClassImp(AliPHOS)
39
fc879520 40//____________________________________________________________________________
41AliPHOS::AliPHOS():AliDetector()
42{
43 // ctor
44 //We do not create objects, because these pointers will be overwritten durin reading from file.
45 fEmcRecPoints = 0 ;
46 fPpsdRecPoints = 0 ;
47 fTrackSegments = 0 ;
48 fRecParticles = 0 ;
49
50}
51//____________________________________________________________________________
52AliPHOS::AliPHOS(const char* name, const char* title=""):AliDetector(name,title)
53{
54 // ctor
55 fEmcRecPoints = new AliPHOSRecPoint::RecPointsList(10) ;
56 fPpsdRecPoints = new AliPHOSRecPoint::RecPointsList(10) ;
57 fTrackSegments = new AliPHOSTrackSegment::TrackSegmentsList("AliPHOSTrackSegment", 10) ;
58 fRecParticles = new AliPHOSRecParticle::RecParticlesList("AliPHOSRecParticle", 10) ;
59
60}
d15a28e7 61//____________________________________________________________________________
62AliPHOS::~AliPHOS()
fe4da5cc 63{
88714635 64 // dtor
fc879520 65 if(fEmcRecPoints)
66 fEmcRecPoints->Delete() ;
67 delete fEmcRecPoints ;
68 if(fPpsdRecPoints)
69 fPpsdRecPoints->Delete() ;
70 delete fPpsdRecPoints ;
71 if(fTrackSegments)
72 fTrackSegments->Delete() ;
73 delete fTrackSegments ;
74 if(fRecParticles)
75 fRecParticles->Delete() ;
76 delete fRecParticles ;
d15a28e7 77 delete fHits ;
78 delete fDigits ;
fe4da5cc 79}
fe4da5cc 80
d15a28e7 81//____________________________________________________________________________
fe4da5cc 82void AliPHOS::CreateMaterials()
83{
b2a60966 84 // Definitions of materials to build PHOS and associated tracking media.
85 // media number in idtmed are 699 to 798.
fe4da5cc 86
d15a28e7 87 // --- The PbWO4 crystals ---
92862013 88 Float_t aX[3] = {207.19, 183.85, 16.0} ;
89 Float_t zX[3] = {82.0, 74.0, 8.0} ;
90 Float_t wX[3] = {1.0, 1.0, 4.0} ;
91 Float_t dX = 8.28 ;
fe4da5cc 92
92862013 93 AliMixture(0, "PbWO4$", aX, zX, dX, -3, wX) ;
fe4da5cc 94
fe4da5cc 95
d15a28e7 96 // --- The polysterene scintillator (CH) ---
92862013 97 Float_t aP[2] = {12.011, 1.00794} ;
98 Float_t zP[2] = {6.0, 1.0} ;
99 Float_t wP[2] = {1.0, 1.0} ;
100 Float_t dP = 1.032 ;
fe4da5cc 101
92862013 102 AliMixture(1, "Polystyrene$", aP, zP, dP, -2, wP) ;
fe4da5cc 103
d15a28e7 104 // --- Aluminium ---
105 AliMaterial(2, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
106 // --- Absorption length is ignored ^
fe4da5cc 107
d15a28e7 108 // --- Tyvek (CnH2n) ---
92862013 109 Float_t aT[2] = {12.011, 1.00794} ;
110 Float_t zT[2] = {6.0, 1.0} ;
111 Float_t wT[2] = {1.0, 2.0} ;
112 Float_t dT = 0.331 ;
fe4da5cc 113
92862013 114 AliMixture(3, "Tyvek$", aT, zT, dT, -2, wT) ;
fe4da5cc 115
d15a28e7 116 // --- Polystyrene foam ---
92862013 117 Float_t aF[2] = {12.011, 1.00794} ;
118 Float_t zF[2] = {6.0, 1.0} ;
119 Float_t wF[2] = {1.0, 1.0} ;
120 Float_t dF = 0.12 ;
fe4da5cc 121
92862013 122 AliMixture(4, "Foam$", aF, zF, dF, -2, wF) ;
fe4da5cc 123
d15a28e7 124 // --- Titanium ---
92862013 125 Float_t aTIT[3] = {47.88, 26.98, 54.94} ;
126 Float_t zTIT[3] = {22.0, 13.0, 25.0} ;
127 Float_t wTIT[3] = {69.0, 6.0, 1.0} ;
128 Float_t dTIT = 4.5 ;
fe4da5cc 129
92862013 130 AliMixture(5, "Titanium$", aTIT, zTIT, dTIT, -3, wTIT);
fe4da5cc 131
d15a28e7 132 // --- Silicon ---
133 AliMaterial(6, "Si$", 28.0855, 14., 2.33, 9.36, 42.3, 0, 0) ;
fe4da5cc 134
fe4da5cc 135
fe4da5cc 136
d15a28e7 137 // --- Foam thermo insulation ---
92862013 138 Float_t aTI[2] = {12.011, 1.00794} ;
139 Float_t zTI[2] = {6.0, 1.0} ;
140 Float_t wTI[2] = {1.0, 1.0} ;
141 Float_t dTI = 0.1 ;
fe4da5cc 142
92862013 143 AliMixture(7, "Thermo Insul.$", aTI, zTI, dTI, -2, wTI) ;
fe4da5cc 144
d15a28e7 145 // --- Textolitn ---
92862013 146 Float_t aTX[4] = {16.0, 28.09, 12.011, 1.00794} ;
147 Float_t zTX[4] = {8.0, 14.0, 6.0, 1.0} ;
148 Float_t wTX[4] = {292.0, 68.0, 462.0, 736.0} ;
149 Float_t dTX = 1.75 ;
fe4da5cc 150
92862013 151 AliMixture(8, "Textolit$", aTX, zTX, dTX, -4, wTX) ;
fe4da5cc 152
d15a28e7 153 //--- FR4 ---
92862013 154 Float_t aFR[3] = {28.0855, 15.9994, 17.749} ;
155 Float_t zFR[3] = {14., 8., 8.875} ;
156 Float_t wFR[3] = {.28, .32, .4} ;
157 Float_t dFR = 1.8 ;
fe4da5cc 158
92862013 159 AliMixture(9, "FR4$", aFR, zFR, dFR, -3, wFR) ;
fe4da5cc 160
d15a28e7 161 // --- The Composite Material for micromegas (so far polyetylene) ---
92862013 162 Float_t aCM[2] = {12.01, 1.} ;
163 Float_t zCM[2] = {6., 1.} ;
164 Float_t wCM[2] = {1., 2.} ;
165 Float_t dCM = 0.935 ;
fe4da5cc 166
92862013 167 AliMixture(10, "Compo Mat$", aCM, zCM, dCM, -2, wCM) ;
fe4da5cc 168
d15a28e7 169 // --- Copper ---
170 AliMaterial(11, "Cu$", 63.546, 29, 8.96, 1.43, 14.8, 0, 0) ;
171
172 // --- G10 : Printed Circuit material ---
92862013 173 Float_t aG10[4] = { 12., 1., 16., 28.} ;
174 Float_t zG10[4] = { 6., 1., 8., 14.} ;
175 Float_t wG10[4] = { .259, .288, .248, .205} ;
176 Float_t dG10 = 1.7 ;
d15a28e7 177
92862013 178 AliMixture(12, "G10$", aG10, zG10, dG10, -4, wG10);
fe4da5cc 179
d15a28e7 180 // --- Lead ---
181 AliMaterial(13, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
fe4da5cc 182
d15a28e7 183 // --- The gas mixture ---
184 // Co2
92862013 185 Float_t aCO[2] = {12.0, 16.0} ;
186 Float_t zCO[2] = {6.0, 8.0} ;
187 Float_t wCO[2] = {1.0, 2.0} ;
188 Float_t dCO = 0.001977 ;
fe4da5cc 189
92862013 190 AliMixture(14, "CO2$", aCO, zCO, dCO, -2, wCO);
fe4da5cc 191
d15a28e7 192 // Ar
92862013 193 Float_t dAr = 0.001782 ;
194 AliMaterial(15, "Ar$", 39.948, 18.0, dAr, 14.0, 0., 0, 0) ;
d15a28e7 195
196 // ArCo2
197 Char_t namate[21];
92862013 198 Float_t aGM[2] ;
199 Float_t zGM[2] ;
200 Float_t wGM[2] ;
201 Float_t dGM ;
fe4da5cc 202
92862013 203 Float_t absL, radL, density ;
d15a28e7 204 Float_t buf[1] ;
205 Int_t nbuf ;
bc9ab547 206
92862013 207 gMC->Gfmate((*fIdmate)[15], namate, aGM[0], zGM[0], density, radL, absL, buf, nbuf) ; // Get properties of Ar
208 gMC->Gfmate((*fIdmate)[14], namate, aGM[1], zGM[1], density, radL, absL, buf, nbuf) ; // Get properties of CO2
bc9ab547 209
fe4da5cc 210
d15a28e7 211 // Create gas mixture
fe4da5cc 212
92862013 213 Float_t arContent = 0.80 ; // Ar-content of the Ar/CO2-mixture (80% / 20%)
d15a28e7 214
92862013 215 wGM[0] = arContent;
216 wGM[1] = 1. - arContent ;
217 dGM = wGM[0] * dAr + wGM[1] * dCO;
fe4da5cc 218
92862013 219 AliMixture(16, "ArCO2$", aGM, zGM, dGM, 2, wGM) ;
fe4da5cc 220
d15a28e7 221
222 // --- Air ---
223 AliMaterial(99, "Air$", 14.61, 7.3, 0.001205, 30420., 67500., 0, 0) ;
fe4da5cc 224
d15a28e7 225
226 // DEFINITION OF THE TRACKING MEDIA
fe4da5cc 227
d15a28e7 228 // for PHOS: idtmed[699->798] equivalent to fIdtmed[0->100]
229 Int_t * idtmed = fIdtmed->GetArray() - 699 ;
92862013 230 Int_t isxfld = gAlice->Field()->Integ() ;
231 Float_t sxmgmx = gAlice->Field()->Max() ;
fe4da5cc 232
d15a28e7 233 // The scintillator of the calorimeter made of PBW04 -> idtmed[699]
234 AliMedium(0, "PHOS Xtal $", 0, 1,
92862013 235 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
fe4da5cc 236
d15a28e7 237 // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[700]
238 AliMedium(1, "CPV scint. $", 1, 1,
92862013 239 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
fe4da5cc 240
d15a28e7 241 // Various Aluminium parts made of Al -> idtmed[701]
242 AliMedium(2, "Al parts $", 2, 0,
92862013 243 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
fe4da5cc 244
d15a28e7 245 // The Tywek which wraps the calorimeter crystals -> idtmed[702]
246 AliMedium(3, "Tyvek wrapper$", 3, 0,
92862013 247 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
fe4da5cc 248
d15a28e7 249 // The Polystyrene foam around the calorimeter module -> idtmed[703]
250 AliMedium(4, "Polyst. foam $", 4, 0,
92862013 251 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
fe4da5cc 252
d15a28e7 253 // The Titanium around the calorimeter crystal -> idtmed[704]
254 AliMedium(5, "Titan. cover $", 5, 0,
92862013 255 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.0001, 0.0001, 0, 0) ;
fe4da5cc 256
d15a28e7 257 // The Silicon of the pin diode to read out the calorimeter crystal -> idtmed[705]
258 AliMedium(6, "Si PIN $", 6, 0,
92862013 259 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.01, 0.01, 0, 0) ;
fe4da5cc 260
d15a28e7 261 // The thermo insulating material of the box which contains the calorimeter module -> idtmed[706]
262 AliMedium(7, "Thermo Insul.$", 7, 0,
92862013 263 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
fe4da5cc 264
d15a28e7 265 // The Textolit which makes up the box which contains the calorimeter module -> idtmed[707]
266 AliMedium(8, "Textolit $", 8, 0,
92862013 267 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
fe4da5cc 268
d15a28e7 269 // FR4: The Plastic which makes up the frame of micromegas -> idtmed[708]
270 AliMedium(9, "FR4 $", 9, 0,
92862013 271 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
fe4da5cc 272
fe4da5cc 273
d15a28e7 274 // The Composite Material for micromegas -> idtmed[709]
275 AliMedium(10, "CompoMat $", 10, 0,
92862013 276 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
fe4da5cc 277
d15a28e7 278 // Copper -> idtmed[710]
279 AliMedium(11, "Copper $", 11, 0,
92862013 280 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
fe4da5cc 281
d15a28e7 282 // G10: Printed Circuit material -> idtmed[711]
283
284 AliMedium(12, "G10 $", 12, 0,
92862013 285 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
fe4da5cc 286
d15a28e7 287 // The Lead -> idtmed[712]
288
289 AliMedium(13, "Lead $", 13, 0,
92862013 290 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
fe4da5cc 291
d15a28e7 292 // The gas mixture: ArCo2 -> idtmed[715]
293
294 AliMedium(16, "ArCo2 $", 16, 1,
92862013 295 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
d15a28e7 296
297 // Air -> idtmed[798]
298 AliMedium(99, "Air $", 99, 0,
92862013 299 isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
fe4da5cc 300
d15a28e7 301 // --- Set decent energy thresholds for gamma and electron tracking
fe4da5cc 302
d15a28e7 303 // Tracking threshold for photons and electrons in the scintillator crystal
304 gMC->Gstpar(idtmed[699], "CUTGAM",0.5E-4) ;
305 gMC->Gstpar(idtmed[699], "CUTELE",1.0E-4) ;
9f616d61 306
d15a28e7 307 // --- Generate explicitly delta rays in the titan cover ---
308 gMC->Gstpar(idtmed[704], "LOSS",3.) ;
309 gMC->Gstpar(idtmed[704], "DRAY",1.) ;
d15a28e7 310 // --- and in aluminium parts ---
311 gMC->Gstpar(idtmed[701], "LOSS",3.) ;
312 gMC->Gstpar(idtmed[701], "DRAY",1.) ;
92862013 313 // --- and in PIN diode
314 gMC->Gstpar(idtmed[705], "LOSS",3) ;
315 gMC->Gstpar(idtmed[705], "DRAY",1) ;
316 // --- and in the passive convertor
317 gMC->Gstpar(idtmed[712], "LOSS",3) ;
318 gMC->Gstpar(idtmed[712], "DRAY",1) ;
319 // Tracking threshold for photons and electrons in the gas ArC02
b7101219 320 gMC->Gstpar(idtmed[715], "CUTGAM",1.E-5) ;
321 gMC->Gstpar(idtmed[715], "CUTELE",1.E-5) ;
322 gMC->Gstpar(idtmed[715], "CUTNEU",1.E-5) ;
323 gMC->Gstpar(idtmed[715], "CUTHAD",1.E-5) ;
324 gMC->Gstpar(idtmed[715], "CUTMUO",1.E-5) ;
325 gMC->Gstpar(idtmed[715], "BCUTE",1.E-5) ;
326 gMC->Gstpar(idtmed[715], "BCUTM",1.E-5) ;
327 gMC->Gstpar(idtmed[715], "DCUTE",1.E-5) ;
328 gMC->Gstpar(idtmed[715], "DCUTM",1.E-5) ;
329 gMC->Gstpar(idtmed[715], "PPCUTM",1.E-5) ;
9f616d61 330 gMC->Gstpar(idtmed[715], "LOSS",2.) ;
331 gMC->Gstpar(idtmed[715], "DRAY",0.) ;
332 gMC->Gstpar(idtmed[715], "STRA",2.) ;
333
0c409cb2 334}
335
336//____________________________________________________________________________
2ea4f4fc 337void AliPHOS::SetTreeAddress()
338{
07a64e48 339 // TBranch *branch;
2ea4f4fc 340 AliDetector::SetTreeAddress();
341
07a64e48 342 // //Branch address for TreeR: RecParticles
343// TTree *treeR = gAlice->TreeR();
344// if ( treeR && fRecParticles ) {
345// branch = treeR->GetBranch("PHOSRP");
346// if (branch) branch->SetAddress(&fRecParticles) ;
347// }
348// //Branch address for TreeR: TrackSegments
349// if ( treeR && fTrackSegments ) {
350// branch = treeR->GetBranch("PHOSTS");
351// if (branch) branch->SetAddress(&fTrackSegments) ;
352// }
353// //Branch address for TreeR: EmcRecPoint
354// if ( treeR && fEmcRecPoints ) {
355// branch = treeR->GetBranch("PHOSEmcRP");
356// if (branch) branch->SetAddress(&fEmcRecPoints) ;
357 // }
0c409cb2 358}
359
9f616d61 360