1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
17 //_________________________________________________________________________
18 // Base Class for PHOS description:
19 // PHOS consists of a PbWO4 calorimeter (EMCA) and a gazeous charged
20 // particles detector (CPV or PPSD).
21 // The only provided method here is CreateMaterials,
22 // which defines the materials common to all PHOS versions.
24 //*-- Author: Laurent Aphecetche & Yves Schutz (SUBATECH)
25 //////////////////////////////////////////////////////////////////////////////
28 // --- ROOT system ---
34 // --- Standard library ---
35 #include <strstream.h>
37 // --- AliRoot header files ---
42 #include "AliPHOSGeometry.h"
43 #include "AliPHOSQAChecker.h"
46 //____________________________________________________________________________
47 AliPHOS:: AliPHOS() : AliDetector()
55 //____________________________________________________________________________
56 AliPHOS::AliPHOS(const char* name, const char* title): AliDetector(name, title)
58 // ctor : title is used to identify the layout
64 //____________________________________________________________________________
70 //____________________________________________________________________________
71 void AliPHOS::CreateMaterials()
73 // Definitions of materials to build PHOS and associated tracking media.
74 // media number in idtmed are 699 to 798.
76 // --- The PbWO4 crystals ---
77 Float_t aX[3] = {207.19, 183.85, 16.0} ;
78 Float_t zX[3] = {82.0, 74.0, 8.0} ;
79 Float_t wX[3] = {1.0, 1.0, 4.0} ;
82 AliMixture(0, "PbWO4$", aX, zX, dX, -3, wX) ;
85 // --- The polysterene scintillator (CH) ---
86 Float_t aP[2] = {12.011, 1.00794} ;
87 Float_t zP[2] = {6.0, 1.0} ;
88 Float_t wP[2] = {1.0, 1.0} ;
91 AliMixture(1, "Polystyrene$", aP, zP, dP, -2, wP) ;
94 AliMaterial(2, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
95 // --- Absorption length is ignored ^
97 // --- Tyvek (CnH2n) ---
98 Float_t aT[2] = {12.011, 1.00794} ;
99 Float_t zT[2] = {6.0, 1.0} ;
100 Float_t wT[2] = {1.0, 2.0} ;
103 AliMixture(3, "Tyvek$", aT, zT, dT, -2, wT) ;
105 // --- Polystyrene foam ---
106 Float_t aF[2] = {12.011, 1.00794} ;
107 Float_t zF[2] = {6.0, 1.0} ;
108 Float_t wF[2] = {1.0, 1.0} ;
111 AliMixture(4, "Foam$", aF, zF, dF, -2, wF) ;
114 Float_t aTIT[3] = {47.88, 26.98, 54.94} ;
115 Float_t zTIT[3] = {22.0, 13.0, 25.0} ;
116 Float_t wTIT[3] = {69.0, 6.0, 1.0} ;
119 AliMixture(5, "Titanium$", aTIT, zTIT, dTIT, -3, wTIT);
122 AliMaterial(6, "Si$", 28.0855, 14., 2.33, 9.36, 42.3, 0, 0) ;
126 // --- Foam thermo insulation ---
127 Float_t aTI[2] = {12.011, 1.00794} ;
128 Float_t zTI[2] = {6.0, 1.0} ;
129 Float_t wTI[2] = {1.0, 1.0} ;
132 AliMixture(7, "Thermo Insul.$", aTI, zTI, dTI, -2, wTI) ;
135 Float_t aTX[4] = {16.0, 28.09, 12.011, 1.00794} ;
136 Float_t zTX[4] = {8.0, 14.0, 6.0, 1.0} ;
137 Float_t wTX[4] = {292.0, 68.0, 462.0, 736.0} ;
140 AliMixture(8, "Textolit$", aTX, zTX, dTX, -4, wTX) ;
143 Float_t aFR[3] = {28.0855, 15.9994, 17.749} ;
144 Float_t zFR[3] = {14., 8., 8.875} ;
145 Float_t wFR[3] = {.28, .32, .4} ;
148 AliMixture(9, "FR4$", aFR, zFR, dFR, -3, wFR) ;
150 // --- The Composite Material for micromegas (so far polyetylene) ---
151 Float_t aCM[2] = {12.01, 1.} ;
152 Float_t zCM[2] = {6., 1.} ;
153 Float_t wCM[2] = {1., 2.} ;
154 Float_t dCM = 0.935 ;
156 AliMixture(10, "Compo Mat$", aCM, zCM, dCM, -2, wCM) ;
159 AliMaterial(11, "Cu$", 63.546, 29, 8.96, 1.43, 14.8, 0, 0) ;
161 // --- G10 : Printed Circuit material ---
162 Float_t aG10[4] = { 12., 1., 16., 28.} ;
163 Float_t zG10[4] = { 6., 1., 8., 14.} ;
164 Float_t wG10[4] = { .259, .288, .248, .205} ;
167 AliMixture(12, "G10$", aG10, zG10, dG10, -4, wG10);
170 AliMaterial(13, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
172 // --- The gas mixture ---
174 Float_t aCO[2] = {12.0, 16.0} ;
175 Float_t zCO[2] = {6.0, 8.0} ;
176 Float_t wCO[2] = {1.0, 2.0} ;
177 Float_t dCO = 0.001977 ;
179 AliMixture(14, "CO2$", aCO, zCO, dCO, -2, wCO);
182 Float_t dAr = 0.001782 ;
183 AliMaterial(15, "Ar$", 39.948, 18.0, dAr, 14.0, 0., 0, 0) ;
192 Float_t absL, radL, density ;
196 gMC->Gfmate((*fIdmate)[15], namate, aGM[0], zGM[0], density, radL, absL, buf, nbuf) ; // Get properties of Ar
197 gMC->Gfmate((*fIdmate)[14], namate, aGM[1], zGM[1], density, radL, absL, buf, nbuf) ; // Get properties of CO2
200 // Create gas mixture
202 Float_t arContent = 0.80 ; // Ar-content of the Ar/CO2-mixture (80% / 20%)
205 wGM[1] = 1. - arContent ;
206 dGM = wGM[0] * dAr + wGM[1] * dCO;
208 AliMixture(16, "ArCO2$", aGM, zGM, dGM, 2, wGM) ;
210 // --- Stainless steel (let it be pure iron) ---
211 AliMaterial(17, "Steel$", 55.845, 26, 7.87, 1.76, 0., 0, 0) ;
214 // --- Fiberglass ---
215 Float_t aFG[4] = {16.0, 28.09, 12.011, 1.00794} ;
216 Float_t zFG[4] = {8.0, 14.0, 6.0, 1.0} ;
217 Float_t wFG[4] = {292.0, 68.0, 462.0, 736.0} ;
220 AliMixture(18, "Fibergla$", aFG, zFG, dFG, -4, wFG) ;
222 // --- Cables in Air box ---
225 Float_t aCA[4] = { 1.,12.,55.8,63.5 };
226 Float_t zCA[4] = { 1.,6.,26.,29. };
227 Float_t wCA[4] = { .014,.086,.42,.48 };
228 Float_t dCA = 0.8 ; //this density is raw estimation, if you know better - correct
230 AliMixture(19, "Cables $", aCA, zCA, dCA, -4, wCA) ;
236 AliMaterial(99, "Air$", 14.61, 7.3, 0.001205, 30420., 67500., 0, 0) ;
239 // DEFINITION OF THE TRACKING MEDIA
241 // for PHOS: idtmed[699->798] equivalent to fIdtmed[0->100]
242 Int_t * idtmed = fIdtmed->GetArray() - 699 ;
243 Int_t isxfld = gAlice->Field()->Integ() ;
244 Float_t sxmgmx = gAlice->Field()->Max() ;
246 // The scintillator of the calorimeter made of PBW04 -> idtmed[699]
247 AliMedium(0, "PHOS Xtal $", 0, 1,
248 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
250 // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[700]
251 AliMedium(1, "CPV scint. $", 1, 1,
252 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
254 // Various Aluminium parts made of Al -> idtmed[701]
255 AliMedium(2, "Al parts $", 2, 0,
256 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
258 // The Tywek which wraps the calorimeter crystals -> idtmed[702]
259 AliMedium(3, "Tyvek wrapper$", 3, 0,
260 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
262 // The Polystyrene foam around the calorimeter module -> idtmed[703]
263 AliMedium(4, "Polyst. foam $", 4, 0,
264 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
266 // The Titanium around the calorimeter crystal -> idtmed[704]
267 AliMedium(5, "Titan. cover $", 5, 0,
268 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.0001, 0.0001, 0, 0) ;
270 // The Silicon of the pin diode to read out the calorimeter crystal -> idtmed[705]
271 AliMedium(6, "Si PIN $", 6, 0,
272 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.01, 0.01, 0, 0) ;
274 // The thermo insulating material of the box which contains the calorimeter module -> idtmed[706]
275 AliMedium(7, "Thermo Insul.$", 7, 0,
276 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
278 // The Textolit which makes up the box which contains the calorimeter module -> idtmed[707]
279 AliMedium(8, "Textolit $", 8, 0,
280 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
282 // FR4: The Plastic which makes up the frame of micromegas -> idtmed[708]
283 AliMedium(9, "FR4 $", 9, 0,
284 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
287 // The Composite Material for micromegas -> idtmed[709]
288 AliMedium(10, "CompoMat $", 10, 0,
289 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
291 // Copper -> idtmed[710]
292 AliMedium(11, "Copper $", 11, 0,
293 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
295 // G10: Printed Circuit material -> idtmed[711]
297 AliMedium(12, "G10 $", 12, 0,
298 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
300 // The Lead -> idtmed[712]
302 AliMedium(13, "Lead $", 13, 0,
303 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
305 // The gas mixture: ArCo2 -> idtmed[715]
307 AliMedium(16, "ArCo2 $", 16, 1,
308 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
310 // Stainless steel -> idtmed[716]
311 AliMedium(17, "Steel $", 17, 0,
312 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
314 // Fibergalss -> idtmed[717]
315 AliMedium(18, "Fiberglass$", 18, 0,
316 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
318 // Cables in air -> idtmed[718]
319 AliMedium(19, "Cables $", 19, 0,
320 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
322 // Air -> idtmed[798]
323 AliMedium(99, "Air $", 99, 0,
324 isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
326 // --- Set decent energy thresholds for gamma and electron tracking
328 // Tracking threshold for photons and electrons in the scintillator crystal
329 gMC->Gstpar(idtmed[699], "CUTGAM",0.5E-4) ;
330 gMC->Gstpar(idtmed[699], "CUTELE",1.0E-4) ;
332 // --- Generate explicitly delta rays in the titan cover ---
333 gMC->Gstpar(idtmed[704], "LOSS",3.) ;
334 gMC->Gstpar(idtmed[704], "DRAY",1.) ;
335 // --- and in aluminium parts ---
336 gMC->Gstpar(idtmed[701], "LOSS",3.) ;
337 gMC->Gstpar(idtmed[701], "DRAY",1.) ;
338 // --- and in PIN diode
339 gMC->Gstpar(idtmed[705], "LOSS",3) ;
340 gMC->Gstpar(idtmed[705], "DRAY",1) ;
341 // --- and in the passive convertor
342 gMC->Gstpar(idtmed[712], "LOSS",3) ;
343 gMC->Gstpar(idtmed[712], "DRAY",1) ;
344 // Tracking threshold for photons and electrons in the gas ArC02
345 gMC->Gstpar(idtmed[715], "CUTGAM",1.E-5) ;
346 gMC->Gstpar(idtmed[715], "CUTELE",1.E-5) ;
347 gMC->Gstpar(idtmed[715], "CUTNEU",1.E-5) ;
348 gMC->Gstpar(idtmed[715], "CUTHAD",1.E-5) ;
349 gMC->Gstpar(idtmed[715], "CUTMUO",1.E-5) ;
350 gMC->Gstpar(idtmed[715], "BCUTE",1.E-5) ;
351 gMC->Gstpar(idtmed[715], "BCUTM",1.E-5) ;
352 gMC->Gstpar(idtmed[715], "DCUTE",1.E-5) ;
353 gMC->Gstpar(idtmed[715], "DCUTM",1.E-5) ;
354 gMC->Gstpar(idtmed[715], "PPCUTM",1.E-5) ;
355 gMC->Gstpar(idtmed[715], "LOSS",2.) ;
356 gMC->Gstpar(idtmed[715], "DRAY",0.) ;
357 gMC->Gstpar(idtmed[715], "STRA",2.) ;
361 //____________________________________________________________________________
362 AliPHOSGeometry * AliPHOS::GetGeometry() const
364 // gets the pointer to the AliPHOSGeometry unique instance
366 return AliPHOSGeometry::GetInstance(GetTitle(),"") ;
370 //____________________________________________________________________________
371 void AliPHOS::SetTreeAddress()
376 sprintf(branchname,"%s",GetName());
378 // Branch address for hit tree
379 TTree *treeH = gAlice->TreeH();
380 if (treeH && fHits) {
381 branch = treeH->GetBranch(branchname);
382 if (branch) branch->SetAddress(&fHits);
386 //____________________________________________________________________________
387 void AliPHOS::WriteQA()
390 // Make TreeQA in the output file.
393 fTreeQA = new TTree("TreeQA", "QA Alarms") ;
394 // Create Alarms branches
395 Int_t bufferSize = 32000 ;
396 Int_t splitlevel = 0 ;
397 TFolder * alarmsF = (TFolder*)gROOT->FindObjectAny("Folders/Run/Conditions/QA/PHOS") ;
398 TString branchName(alarmsF->GetName());
399 TBranch * alarmsBranch = fTreeQA->Branch(branchName,"TFolder", &alarmsF, bufferSize, splitlevel);
400 TString branchTitle = branchName + " QA alarms" ;
401 alarmsBranch->SetTitle(branchTitle);
402 alarmsBranch->Fill() ;