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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"
94de3818 37#include "AliMagF.h"
fe4da5cc 38
fe4da5cc 39ClassImp(AliPHOS)
40
fc879520 41//____________________________________________________________________________
42AliPHOS::AliPHOS():AliDetector()
43{
44 // ctor
45 //We do not create objects, because these pointers will be overwritten durin reading from file.
46 fEmcRecPoints = 0 ;
47 fPpsdRecPoints = 0 ;
48 fTrackSegments = 0 ;
49 fRecParticles = 0 ;
50
51}
52//____________________________________________________________________________
d43225ee 53AliPHOS::AliPHOS(const char* name, const char* title): AliDetector(name,title)
fc879520 54{
55 // ctor
d43225ee 56
fc879520 57 fEmcRecPoints = new AliPHOSRecPoint::RecPointsList(10) ;
58 fPpsdRecPoints = new AliPHOSRecPoint::RecPointsList(10) ;
59 fTrackSegments = new AliPHOSTrackSegment::TrackSegmentsList("AliPHOSTrackSegment", 10) ;
60 fRecParticles = new AliPHOSRecParticle::RecParticlesList("AliPHOSRecParticle", 10) ;
3741205b 61 fDebugLevel = 0;
fc879520 62
63}
d15a28e7 64//____________________________________________________________________________
65AliPHOS::~AliPHOS()
fe4da5cc 66{
88714635 67 // dtor
fc879520 68 if(fEmcRecPoints)
69 fEmcRecPoints->Delete() ;
70 delete fEmcRecPoints ;
71 if(fPpsdRecPoints)
72 fPpsdRecPoints->Delete() ;
73 delete fPpsdRecPoints ;
74 if(fTrackSegments)
75 fTrackSegments->Delete() ;
76 delete fTrackSegments ;
77 if(fRecParticles)
78 fRecParticles->Delete() ;
79 delete fRecParticles ;
d15a28e7 80 delete fHits ;
81 delete fDigits ;
fe4da5cc 82}
fe4da5cc 83
d15a28e7 84//____________________________________________________________________________
fe4da5cc 85void AliPHOS::CreateMaterials()
86{
b2a60966 87 // Definitions of materials to build PHOS and associated tracking media.
88 // media number in idtmed are 699 to 798.
fe4da5cc 89
d15a28e7 90 // --- The PbWO4 crystals ---
92862013 91 Float_t aX[3] = {207.19, 183.85, 16.0} ;
92 Float_t zX[3] = {82.0, 74.0, 8.0} ;
93 Float_t wX[3] = {1.0, 1.0, 4.0} ;
94 Float_t dX = 8.28 ;
fe4da5cc 95
92862013 96 AliMixture(0, "PbWO4$", aX, zX, dX, -3, wX) ;
fe4da5cc 97
fe4da5cc 98
d15a28e7 99 // --- The polysterene scintillator (CH) ---
92862013 100 Float_t aP[2] = {12.011, 1.00794} ;
101 Float_t zP[2] = {6.0, 1.0} ;
102 Float_t wP[2] = {1.0, 1.0} ;
103 Float_t dP = 1.032 ;
fe4da5cc 104
92862013 105 AliMixture(1, "Polystyrene$", aP, zP, dP, -2, wP) ;
fe4da5cc 106
d15a28e7 107 // --- Aluminium ---
108 AliMaterial(2, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
109 // --- Absorption length is ignored ^
fe4da5cc 110
d15a28e7 111 // --- Tyvek (CnH2n) ---
92862013 112 Float_t aT[2] = {12.011, 1.00794} ;
113 Float_t zT[2] = {6.0, 1.0} ;
114 Float_t wT[2] = {1.0, 2.0} ;
115 Float_t dT = 0.331 ;
fe4da5cc 116
92862013 117 AliMixture(3, "Tyvek$", aT, zT, dT, -2, wT) ;
fe4da5cc 118
d15a28e7 119 // --- Polystyrene foam ---
92862013 120 Float_t aF[2] = {12.011, 1.00794} ;
121 Float_t zF[2] = {6.0, 1.0} ;
122 Float_t wF[2] = {1.0, 1.0} ;
123 Float_t dF = 0.12 ;
fe4da5cc 124
92862013 125 AliMixture(4, "Foam$", aF, zF, dF, -2, wF) ;
fe4da5cc 126
d15a28e7 127 // --- Titanium ---
92862013 128 Float_t aTIT[3] = {47.88, 26.98, 54.94} ;
129 Float_t zTIT[3] = {22.0, 13.0, 25.0} ;
130 Float_t wTIT[3] = {69.0, 6.0, 1.0} ;
131 Float_t dTIT = 4.5 ;
fe4da5cc 132
92862013 133 AliMixture(5, "Titanium$", aTIT, zTIT, dTIT, -3, wTIT);
fe4da5cc 134
d15a28e7 135 // --- Silicon ---
136 AliMaterial(6, "Si$", 28.0855, 14., 2.33, 9.36, 42.3, 0, 0) ;
fe4da5cc 137
fe4da5cc 138
fe4da5cc 139
d15a28e7 140 // --- Foam thermo insulation ---
92862013 141 Float_t aTI[2] = {12.011, 1.00794} ;
142 Float_t zTI[2] = {6.0, 1.0} ;
143 Float_t wTI[2] = {1.0, 1.0} ;
144 Float_t dTI = 0.1 ;
fe4da5cc 145
92862013 146 AliMixture(7, "Thermo Insul.$", aTI, zTI, dTI, -2, wTI) ;
fe4da5cc 147
d15a28e7 148 // --- Textolitn ---
92862013 149 Float_t aTX[4] = {16.0, 28.09, 12.011, 1.00794} ;
150 Float_t zTX[4] = {8.0, 14.0, 6.0, 1.0} ;
151 Float_t wTX[4] = {292.0, 68.0, 462.0, 736.0} ;
152 Float_t dTX = 1.75 ;
fe4da5cc 153
92862013 154 AliMixture(8, "Textolit$", aTX, zTX, dTX, -4, wTX) ;
fe4da5cc 155
d15a28e7 156 //--- FR4 ---
92862013 157 Float_t aFR[3] = {28.0855, 15.9994, 17.749} ;
158 Float_t zFR[3] = {14., 8., 8.875} ;
159 Float_t wFR[3] = {.28, .32, .4} ;
160 Float_t dFR = 1.8 ;
fe4da5cc 161
92862013 162 AliMixture(9, "FR4$", aFR, zFR, dFR, -3, wFR) ;
fe4da5cc 163
d15a28e7 164 // --- The Composite Material for micromegas (so far polyetylene) ---
92862013 165 Float_t aCM[2] = {12.01, 1.} ;
166 Float_t zCM[2] = {6., 1.} ;
167 Float_t wCM[2] = {1., 2.} ;
168 Float_t dCM = 0.935 ;
fe4da5cc 169
92862013 170 AliMixture(10, "Compo Mat$", aCM, zCM, dCM, -2, wCM) ;
fe4da5cc 171
d15a28e7 172 // --- Copper ---
173 AliMaterial(11, "Cu$", 63.546, 29, 8.96, 1.43, 14.8, 0, 0) ;
174
175 // --- G10 : Printed Circuit material ---
92862013 176 Float_t aG10[4] = { 12., 1., 16., 28.} ;
177 Float_t zG10[4] = { 6., 1., 8., 14.} ;
178 Float_t wG10[4] = { .259, .288, .248, .205} ;
179 Float_t dG10 = 1.7 ;
d15a28e7 180
92862013 181 AliMixture(12, "G10$", aG10, zG10, dG10, -4, wG10);
fe4da5cc 182
d15a28e7 183 // --- Lead ---
184 AliMaterial(13, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
fe4da5cc 185
d15a28e7 186 // --- The gas mixture ---
187 // Co2
92862013 188 Float_t aCO[2] = {12.0, 16.0} ;
189 Float_t zCO[2] = {6.0, 8.0} ;
190 Float_t wCO[2] = {1.0, 2.0} ;
191 Float_t dCO = 0.001977 ;
fe4da5cc 192
92862013 193 AliMixture(14, "CO2$", aCO, zCO, dCO, -2, wCO);
fe4da5cc 194
d15a28e7 195 // Ar
92862013 196 Float_t dAr = 0.001782 ;
197 AliMaterial(15, "Ar$", 39.948, 18.0, dAr, 14.0, 0., 0, 0) ;
d15a28e7 198
199 // ArCo2
200 Char_t namate[21];
92862013 201 Float_t aGM[2] ;
202 Float_t zGM[2] ;
203 Float_t wGM[2] ;
204 Float_t dGM ;
fe4da5cc 205
92862013 206 Float_t absL, radL, density ;
d15a28e7 207 Float_t buf[1] ;
208 Int_t nbuf ;
bc9ab547 209
92862013 210 gMC->Gfmate((*fIdmate)[15], namate, aGM[0], zGM[0], density, radL, absL, buf, nbuf) ; // Get properties of Ar
211 gMC->Gfmate((*fIdmate)[14], namate, aGM[1], zGM[1], density, radL, absL, buf, nbuf) ; // Get properties of CO2
bc9ab547 212
fe4da5cc 213
d15a28e7 214 // Create gas mixture
fe4da5cc 215
92862013 216 Float_t arContent = 0.80 ; // Ar-content of the Ar/CO2-mixture (80% / 20%)
d15a28e7 217
92862013 218 wGM[0] = arContent;
219 wGM[1] = 1. - arContent ;
220 dGM = wGM[0] * dAr + wGM[1] * dCO;
fe4da5cc 221
92862013 222 AliMixture(16, "ArCO2$", aGM, zGM, dGM, 2, wGM) ;
fe4da5cc 223
d15a28e7 224
225 // --- Air ---
226 AliMaterial(99, "Air$", 14.61, 7.3, 0.001205, 30420., 67500., 0, 0) ;
fe4da5cc 227
d15a28e7 228
229 // DEFINITION OF THE TRACKING MEDIA
fe4da5cc 230
d15a28e7 231 // for PHOS: idtmed[699->798] equivalent to fIdtmed[0->100]
232 Int_t * idtmed = fIdtmed->GetArray() - 699 ;
92862013 233 Int_t isxfld = gAlice->Field()->Integ() ;
234 Float_t sxmgmx = gAlice->Field()->Max() ;
fe4da5cc 235
d15a28e7 236 // The scintillator of the calorimeter made of PBW04 -> idtmed[699]
237 AliMedium(0, "PHOS Xtal $", 0, 1,
92862013 238 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
fe4da5cc 239
d15a28e7 240 // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[700]
241 AliMedium(1, "CPV scint. $", 1, 1,
92862013 242 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
fe4da5cc 243
d15a28e7 244 // Various Aluminium parts made of Al -> idtmed[701]
245 AliMedium(2, "Al parts $", 2, 0,
92862013 246 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
fe4da5cc 247
d15a28e7 248 // The Tywek which wraps the calorimeter crystals -> idtmed[702]
249 AliMedium(3, "Tyvek wrapper$", 3, 0,
92862013 250 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
fe4da5cc 251
d15a28e7 252 // The Polystyrene foam around the calorimeter module -> idtmed[703]
253 AliMedium(4, "Polyst. foam $", 4, 0,
92862013 254 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
fe4da5cc 255
d15a28e7 256 // The Titanium around the calorimeter crystal -> idtmed[704]
257 AliMedium(5, "Titan. cover $", 5, 0,
92862013 258 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.0001, 0.0001, 0, 0) ;
fe4da5cc 259
d15a28e7 260 // The Silicon of the pin diode to read out the calorimeter crystal -> idtmed[705]
261 AliMedium(6, "Si PIN $", 6, 0,
92862013 262 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.01, 0.01, 0, 0) ;
fe4da5cc 263
d15a28e7 264 // The thermo insulating material of the box which contains the calorimeter module -> idtmed[706]
265 AliMedium(7, "Thermo Insul.$", 7, 0,
92862013 266 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
fe4da5cc 267
d15a28e7 268 // The Textolit which makes up the box which contains the calorimeter module -> idtmed[707]
269 AliMedium(8, "Textolit $", 8, 0,
92862013 270 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
fe4da5cc 271
d15a28e7 272 // FR4: The Plastic which makes up the frame of micromegas -> idtmed[708]
273 AliMedium(9, "FR4 $", 9, 0,
92862013 274 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
fe4da5cc 275
fe4da5cc 276
d15a28e7 277 // The Composite Material for micromegas -> idtmed[709]
278 AliMedium(10, "CompoMat $", 10, 0,
92862013 279 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
fe4da5cc 280
d15a28e7 281 // Copper -> idtmed[710]
282 AliMedium(11, "Copper $", 11, 0,
92862013 283 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
fe4da5cc 284
d15a28e7 285 // G10: Printed Circuit material -> idtmed[711]
286
287 AliMedium(12, "G10 $", 12, 0,
92862013 288 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
fe4da5cc 289
d15a28e7 290 // The Lead -> idtmed[712]
291
292 AliMedium(13, "Lead $", 13, 0,
92862013 293 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
fe4da5cc 294
d15a28e7 295 // The gas mixture: ArCo2 -> idtmed[715]
296
297 AliMedium(16, "ArCo2 $", 16, 1,
92862013 298 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
d15a28e7 299
300 // Air -> idtmed[798]
301 AliMedium(99, "Air $", 99, 0,
92862013 302 isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
fe4da5cc 303
d15a28e7 304 // --- Set decent energy thresholds for gamma and electron tracking
fe4da5cc 305
d15a28e7 306 // Tracking threshold for photons and electrons in the scintillator crystal
307 gMC->Gstpar(idtmed[699], "CUTGAM",0.5E-4) ;
308 gMC->Gstpar(idtmed[699], "CUTELE",1.0E-4) ;
9f616d61 309
d15a28e7 310 // --- Generate explicitly delta rays in the titan cover ---
311 gMC->Gstpar(idtmed[704], "LOSS",3.) ;
312 gMC->Gstpar(idtmed[704], "DRAY",1.) ;
d15a28e7 313 // --- and in aluminium parts ---
314 gMC->Gstpar(idtmed[701], "LOSS",3.) ;
315 gMC->Gstpar(idtmed[701], "DRAY",1.) ;
92862013 316 // --- and in PIN diode
317 gMC->Gstpar(idtmed[705], "LOSS",3) ;
318 gMC->Gstpar(idtmed[705], "DRAY",1) ;
319 // --- and in the passive convertor
320 gMC->Gstpar(idtmed[712], "LOSS",3) ;
321 gMC->Gstpar(idtmed[712], "DRAY",1) ;
322 // Tracking threshold for photons and electrons in the gas ArC02
b7101219 323 gMC->Gstpar(idtmed[715], "CUTGAM",1.E-5) ;
324 gMC->Gstpar(idtmed[715], "CUTELE",1.E-5) ;
325 gMC->Gstpar(idtmed[715], "CUTNEU",1.E-5) ;
326 gMC->Gstpar(idtmed[715], "CUTHAD",1.E-5) ;
327 gMC->Gstpar(idtmed[715], "CUTMUO",1.E-5) ;
328 gMC->Gstpar(idtmed[715], "BCUTE",1.E-5) ;
329 gMC->Gstpar(idtmed[715], "BCUTM",1.E-5) ;
330 gMC->Gstpar(idtmed[715], "DCUTE",1.E-5) ;
331 gMC->Gstpar(idtmed[715], "DCUTM",1.E-5) ;
332 gMC->Gstpar(idtmed[715], "PPCUTM",1.E-5) ;
9f616d61 333 gMC->Gstpar(idtmed[715], "LOSS",2.) ;
334 gMC->Gstpar(idtmed[715], "DRAY",0.) ;
335 gMC->Gstpar(idtmed[715], "STRA",2.) ;
336
0c409cb2 337}
338
339//____________________________________________________________________________
2ea4f4fc 340void AliPHOS::SetTreeAddress()
341{
07a64e48 342 // TBranch *branch;
2ea4f4fc 343 AliDetector::SetTreeAddress();
344
07a64e48 345 // //Branch address for TreeR: RecParticles
346// TTree *treeR = gAlice->TreeR();
347// if ( treeR && fRecParticles ) {
348// branch = treeR->GetBranch("PHOSRP");
349// if (branch) branch->SetAddress(&fRecParticles) ;
350// }
351// //Branch address for TreeR: TrackSegments
352// if ( treeR && fTrackSegments ) {
353// branch = treeR->GetBranch("PHOSTS");
354// if (branch) branch->SetAddress(&fTrackSegments) ;
355// }
356// //Branch address for TreeR: EmcRecPoint
357// if ( treeR && fEmcRecPoints ) {
358// branch = treeR->GetBranch("PHOSEmcRP");
359// if (branch) branch->SetAddress(&fEmcRecPoints) ;
360 // }
0c409cb2 361}
362
9f616d61 363