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 ---
36 // --- AliRoot header files ---
40 #include "AliPHOSGeometry.h"
41 #include "AliPHOSQAChecker.h"
44 //____________________________________________________________________________
45 AliPHOS:: AliPHOS() : AliDetector()
53 //____________________________________________________________________________
54 AliPHOS::AliPHOS(const char* name, const char* title): AliDetector(name, title)
56 // ctor : title is used to identify the layout
62 //____________________________________________________________________________
68 //____________________________________________________________________________
69 void AliPHOS::CreateMaterials()
71 // Definitions of materials to build PHOS and associated tracking media.
72 // media number in idtmed are 699 to 798.
74 // --- The PbWO4 crystals ---
75 Float_t aX[3] = {207.19, 183.85, 16.0} ;
76 Float_t zX[3] = {82.0, 74.0, 8.0} ;
77 Float_t wX[3] = {1.0, 1.0, 4.0} ;
80 AliMixture(0, "PbWO4$", aX, zX, dX, -3, wX) ;
83 // --- The polysterene scintillator (CH) ---
84 Float_t aP[2] = {12.011, 1.00794} ;
85 Float_t zP[2] = {6.0, 1.0} ;
86 Float_t wP[2] = {1.0, 1.0} ;
89 AliMixture(1, "Polystyrene$", aP, zP, dP, -2, wP) ;
92 AliMaterial(2, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
93 // --- Absorption length is ignored ^
95 // --- Tyvek (CnH2n) ---
96 Float_t aT[2] = {12.011, 1.00794} ;
97 Float_t zT[2] = {6.0, 1.0} ;
98 Float_t wT[2] = {1.0, 2.0} ;
101 AliMixture(3, "Tyvek$", aT, zT, dT, -2, wT) ;
103 // --- Polystyrene foam ---
104 Float_t aF[2] = {12.011, 1.00794} ;
105 Float_t zF[2] = {6.0, 1.0} ;
106 Float_t wF[2] = {1.0, 1.0} ;
109 AliMixture(4, "Foam$", aF, zF, dF, -2, wF) ;
112 Float_t aTIT[3] = {47.88, 26.98, 54.94} ;
113 Float_t zTIT[3] = {22.0, 13.0, 25.0} ;
114 Float_t wTIT[3] = {69.0, 6.0, 1.0} ;
117 AliMixture(5, "Titanium$", aTIT, zTIT, dTIT, -3, wTIT);
120 AliMaterial(6, "Si$", 28.0855, 14., 2.33, 9.36, 42.3, 0, 0) ;
124 // --- Foam thermo insulation ---
125 Float_t aTI[2] = {12.011, 1.00794} ;
126 Float_t zTI[2] = {6.0, 1.0} ;
127 Float_t wTI[2] = {1.0, 1.0} ;
130 AliMixture(7, "Thermo Insul.$", aTI, zTI, dTI, -2, wTI) ;
133 Float_t aTX[4] = {16.0, 28.09, 12.011, 1.00794} ;
134 Float_t zTX[4] = {8.0, 14.0, 6.0, 1.0} ;
135 Float_t wTX[4] = {292.0, 68.0, 462.0, 736.0} ;
138 AliMixture(8, "Textolit$", aTX, zTX, dTX, -4, wTX) ;
141 Float_t aFR[3] = {28.0855, 15.9994, 17.749} ;
142 Float_t zFR[3] = {14., 8., 8.875} ;
143 Float_t wFR[3] = {.28, .32, .4} ;
146 AliMixture(9, "FR4$", aFR, zFR, dFR, -3, wFR) ;
148 // --- The Composite Material for micromegas (so far polyetylene) ---
149 Float_t aCM[2] = {12.01, 1.} ;
150 Float_t zCM[2] = {6., 1.} ;
151 Float_t wCM[2] = {1., 2.} ;
152 Float_t dCM = 0.935 ;
154 AliMixture(10, "Compo Mat$", aCM, zCM, dCM, -2, wCM) ;
157 AliMaterial(11, "Cu$", 63.546, 29, 8.96, 1.43, 14.8, 0, 0) ;
159 // --- G10 : Printed Circuit material ---
160 Float_t aG10[4] = { 12., 1., 16., 28.} ;
161 Float_t zG10[4] = { 6., 1., 8., 14.} ;
162 Float_t wG10[4] = { .259, .288, .248, .205} ;
165 AliMixture(12, "G10$", aG10, zG10, dG10, -4, wG10);
168 AliMaterial(13, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
170 // --- The gas mixture ---
172 Float_t aCO[2] = {12.0, 16.0} ;
173 Float_t zCO[2] = {6.0, 8.0} ;
174 Float_t wCO[2] = {1.0, 2.0} ;
175 Float_t dCO = 0.001977 ;
177 AliMixture(14, "CO2$", aCO, zCO, dCO, -2, wCO);
180 Float_t dAr = 0.001782 ;
181 AliMaterial(15, "Ar$", 39.948, 18.0, dAr, 14.0, 0., 0, 0) ;
190 Float_t absL, radL, density ;
194 gMC->Gfmate((*fIdmate)[15], namate, aGM[0], zGM[0], density, radL, absL, buf, nbuf) ; // Get properties of Ar
195 gMC->Gfmate((*fIdmate)[14], namate, aGM[1], zGM[1], density, radL, absL, buf, nbuf) ; // Get properties of CO2
198 // Create gas mixture
200 Float_t arContent = 0.80 ; // Ar-content of the Ar/CO2-mixture (80% / 20%)
203 wGM[1] = 1. - arContent ;
204 dGM = wGM[0] * dAr + wGM[1] * dCO;
206 AliMixture(16, "ArCO2$", aGM, zGM, dGM, 2, wGM) ;
208 // --- Stainless steel (let it be pure iron) ---
209 AliMaterial(17, "Steel$", 55.845, 26, 7.87, 1.76, 0., 0, 0) ;
212 // --- Fiberglass ---
213 Float_t aFG[4] = {16.0, 28.09, 12.011, 1.00794} ;
214 Float_t zFG[4] = {8.0, 14.0, 6.0, 1.0} ;
215 Float_t wFG[4] = {292.0, 68.0, 462.0, 736.0} ;
218 AliMixture(18, "Fibergla$", aFG, zFG, dFG, -4, wFG) ;
220 // --- Cables in Air box ---
223 Float_t aCA[4] = { 1.,12.,55.8,63.5 };
224 Float_t zCA[4] = { 1.,6.,26.,29. };
225 Float_t wCA[4] = { .014,.086,.42,.48 };
226 Float_t dCA = 0.8 ; //this density is raw estimation, if you know better - correct
228 AliMixture(19, "Cables $", aCA, zCA, dCA, -4, wCA) ;
234 AliMaterial(99, "Air$", 14.61, 7.3, 0.001205, 30420., 67500., 0, 0) ;
237 // DEFINITION OF THE TRACKING MEDIA
239 // for PHOS: idtmed[699->798] equivalent to fIdtmed[0->100]
240 Int_t * idtmed = fIdtmed->GetArray() - 699 ;
241 Int_t isxfld = gAlice->Field()->Integ() ;
242 Float_t sxmgmx = gAlice->Field()->Max() ;
244 // The scintillator of the calorimeter made of PBW04 -> idtmed[699]
245 AliMedium(0, "PHOS Xtal $", 0, 1,
246 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
248 // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[700]
249 AliMedium(1, "CPV scint. $", 1, 1,
250 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
252 // Various Aluminium parts made of Al -> idtmed[701]
253 AliMedium(2, "Al parts $", 2, 0,
254 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
256 // The Tywek which wraps the calorimeter crystals -> idtmed[702]
257 AliMedium(3, "Tyvek wrapper$", 3, 0,
258 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
260 // The Polystyrene foam around the calorimeter module -> idtmed[703]
261 AliMedium(4, "Polyst. foam $", 4, 0,
262 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
264 // The Titanium around the calorimeter crystal -> idtmed[704]
265 AliMedium(5, "Titan. cover $", 5, 0,
266 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.0001, 0.0001, 0, 0) ;
268 // The Silicon of the pin diode to read out the calorimeter crystal -> idtmed[705]
269 AliMedium(6, "Si PIN $", 6, 0,
270 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.01, 0.01, 0, 0) ;
272 // The thermo insulating material of the box which contains the calorimeter module -> idtmed[706]
273 AliMedium(7, "Thermo Insul.$", 7, 0,
274 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
276 // The Textolit which makes up the box which contains the calorimeter module -> idtmed[707]
277 AliMedium(8, "Textolit $", 8, 0,
278 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
280 // FR4: The Plastic which makes up the frame of micromegas -> idtmed[708]
281 AliMedium(9, "FR4 $", 9, 0,
282 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
285 // The Composite Material for micromegas -> idtmed[709]
286 AliMedium(10, "CompoMat $", 10, 0,
287 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
289 // Copper -> idtmed[710]
290 AliMedium(11, "Copper $", 11, 0,
291 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
293 // G10: Printed Circuit material -> idtmed[711]
295 AliMedium(12, "G10 $", 12, 0,
296 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
298 // The Lead -> idtmed[712]
300 AliMedium(13, "Lead $", 13, 0,
301 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
303 // The gas mixture: ArCo2 -> idtmed[715]
305 AliMedium(16, "ArCo2 $", 16, 1,
306 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
308 // Stainless steel -> idtmed[716]
309 AliMedium(17, "Steel $", 17, 0,
310 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
312 // Fibergalss -> idtmed[717]
313 AliMedium(18, "Fiberglass$", 18, 0,
314 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
316 // Cables in air -> idtmed[718]
317 AliMedium(19, "Cables $", 19, 0,
318 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
320 // Air -> idtmed[798]
321 AliMedium(99, "Air $", 99, 0,
322 isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
324 // --- Set decent energy thresholds for gamma and electron tracking
326 // Tracking threshold for photons and electrons in the scintillator crystal
327 gMC->Gstpar(idtmed[699], "CUTGAM",0.5E-4) ;
328 gMC->Gstpar(idtmed[699], "CUTELE",1.0E-4) ;
330 // --- Generate explicitly delta rays in the titan cover ---
331 gMC->Gstpar(idtmed[704], "LOSS",3.) ;
332 gMC->Gstpar(idtmed[704], "DRAY",1.) ;
333 // --- and in aluminium parts ---
334 gMC->Gstpar(idtmed[701], "LOSS",3.) ;
335 gMC->Gstpar(idtmed[701], "DRAY",1.) ;
336 // --- and in PIN diode
337 gMC->Gstpar(idtmed[705], "LOSS",3) ;
338 gMC->Gstpar(idtmed[705], "DRAY",1) ;
339 // --- and in the passive convertor
340 gMC->Gstpar(idtmed[712], "LOSS",3) ;
341 gMC->Gstpar(idtmed[712], "DRAY",1) ;
342 // Tracking threshold for photons and electrons in the gas ArC02
343 gMC->Gstpar(idtmed[715], "CUTGAM",1.E-5) ;
344 gMC->Gstpar(idtmed[715], "CUTELE",1.E-5) ;
345 gMC->Gstpar(idtmed[715], "CUTNEU",1.E-5) ;
346 gMC->Gstpar(idtmed[715], "CUTHAD",1.E-5) ;
347 gMC->Gstpar(idtmed[715], "CUTMUO",1.E-5) ;
348 gMC->Gstpar(idtmed[715], "BCUTE",1.E-5) ;
349 gMC->Gstpar(idtmed[715], "BCUTM",1.E-5) ;
350 gMC->Gstpar(idtmed[715], "DCUTE",1.E-5) ;
351 gMC->Gstpar(idtmed[715], "DCUTM",1.E-5) ;
352 gMC->Gstpar(idtmed[715], "PPCUTM",1.E-5) ;
353 gMC->Gstpar(idtmed[715], "LOSS",2.) ;
354 gMC->Gstpar(idtmed[715], "DRAY",0.) ;
355 gMC->Gstpar(idtmed[715], "STRA",2.) ;
359 //____________________________________________________________________________
360 AliPHOSGeometry * AliPHOS::GetGeometry() const
362 // gets the pointer to the AliPHOSGeometry unique instance
364 return AliPHOSGeometry::GetInstance(GetTitle(),"") ;
368 //____________________________________________________________________________
369 void AliPHOS::SetTreeAddress()
371 // Set tree address to hit array
374 sprintf(branchname,"%s",GetName());
376 // Branch address for hit tree
377 TTree *treeH = gAlice->TreeH();
378 if (treeH && fHits) {
379 branch = treeH->GetBranch(branchname);
380 if (branch) branch->SetAddress(&fHits);
384 //____________________________________________________________________________
385 void AliPHOS::WriteQA()
388 // Make TreeQA in the output file.
390 fTreeQA = new TTree("TreeQA", "QA Alarms") ;
391 // Create Alarms branches
392 Int_t bufferSize = 32000 ;
393 Int_t splitlevel = 0 ;
394 TFolder * alarmsF = (TFolder*)gROOT->FindObjectAny("Folders/Run/Conditions/QA/PHOS") ;
395 TString branchName(alarmsF->GetName());
396 TBranch * alarmsBranch = fTreeQA->Branch(branchName,"TFolder", &alarmsF, bufferSize, splitlevel);
397 TString branchTitle = branchName + " QA alarms" ;
398 alarmsBranch->SetTitle(branchTitle);
399 alarmsBranch->Fill() ;