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 **************************************************************************/
18 //_________________________________________________________________________
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.
25 //*-- Author: Laurent Aphecetche & Yves Schutz (SUBATECH)
26 //////////////////////////////////////////////////////////////////////////////
29 // --- ROOT system ---
35 // --- Standard library ---
37 #include <strstream.h>
38 // --- AliRoot header files ---
44 #include "AliPHOSGeometry.h"
45 #include "AliPHOSQAChecker.h"
48 //____________________________________________________________________________
49 AliPHOS:: AliPHOS() : AliDetector()
51 // Create folder and task hierarchy
57 //____________________________________________________________________________
58 AliPHOS::AliPHOS(const char* name, const char* title): AliDetector(name, title)
60 // Create folder and task hierarchy
65 //____________________________________________________________________________
66 void AliPHOS::CreatePHOSFolders()
68 // create the ALICE TFolder
69 // create the ALICE TTasks
70 // add the Alice QA TTAsks
71 // create the ALICE main TFolder
72 // add the Alice QA Alarms
73 // this should be done of course by AliRun
75 TFolder * alice = new TFolder();
76 alice->SetNameTitle("YSAlice", "Alice Folder") ;
77 gROOT->GetListOfBrowsables()->Add(alice) ;
79 TFolder * aliceF = alice->AddFolder("folders", "Alice memory Folder") ;
80 // make it the owner of the objects that it contains
83 TFolder * geomF = aliceF->AddFolder("Geometry", "Geometry objects") ;
85 TFolder * alarmsF = aliceF->AddFolder("QAAlarms", "Alarms raised by QA check") ;
86 // make it the owner of the objects that it contains
88 TFolder * aliceT = alice->AddFolder("tasks", "Alice tasks Folder") ;
89 // make it the owner of the objects that it contains
92 TTask * aliceQA = new TTask("QA", "Alice QA tasks") ;
95 TTask * aliceDi = new TTask("(S)Digitizer", "Alice SDigitizer & Digitizer") ;
98 TTask * aliceRe = new TTask("Reconstructioner", "Alice Reconstructioner") ;
101 char * tempo = new char[80] ;
103 // creates the PHOSQA (QAChecker knows how to add itself in the tasks list)
104 sprintf(tempo, "%sCheckers container",GetName() ) ;
105 fQATask = new AliPHOSQAChecker(GetName(), tempo);
107 // creates the PHOS(S)Digitizer and adds it to alice main (S)Digitizer task
108 sprintf(tempo, "%sDigitizers container",GetName() ) ;
109 fSDTask = new TTask(GetName(), tempo);
110 aliceDi->Add(fSDTask) ;
112 // creates the PHOS reconstructioner and adds it to alice main Reconstructioner task
113 sprintf(tempo, "%sReconstructioner container",GetName() ) ;
114 fReTask = new TTask(GetName(), tempo);
115 aliceRe->Add(fReTask) ;
119 // creates the PHOS geometry folder
120 geomF->AddFolder("PHOS", "Geometry for PHOS") ;
121 // creates the PHOSQA alarm folder
122 alarmsF->AddFolder("PHOS", "QA alarms from PHOS") ;
124 //____________________________________________________________________________
127 // remove the alice folder and alice QA task that PHOS creates instead of AliRun
129 // remove and delete the PHOS QA tasks
130 TFolder * alice = (TFolder*)gROOT->GetListOfBrowsables()->FindObject("YSAlice") ;
131 TTask * aliceQA = (TTask*)alice->FindObject("tasks/QA") ;
132 fQATask->GetListOfTasks()->Delete() ;
133 aliceQA->GetListOfTasks()->Remove(fQATask) ;
136 // remove and delete aliceQA (should be done by AliRun)
139 //____________________________________________________________________________
140 void AliPHOS::CreateMaterials()
142 // Definitions of materials to build PHOS and associated tracking media.
143 // media number in idtmed are 699 to 798.
145 // --- The PbWO4 crystals ---
146 Float_t aX[3] = {207.19, 183.85, 16.0} ;
147 Float_t zX[3] = {82.0, 74.0, 8.0} ;
148 Float_t wX[3] = {1.0, 1.0, 4.0} ;
151 AliMixture(0, "PbWO4$", aX, zX, dX, -3, wX) ;
154 // --- The polysterene scintillator (CH) ---
155 Float_t aP[2] = {12.011, 1.00794} ;
156 Float_t zP[2] = {6.0, 1.0} ;
157 Float_t wP[2] = {1.0, 1.0} ;
160 AliMixture(1, "Polystyrene$", aP, zP, dP, -2, wP) ;
163 AliMaterial(2, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
164 // --- Absorption length is ignored ^
166 // --- Tyvek (CnH2n) ---
167 Float_t aT[2] = {12.011, 1.00794} ;
168 Float_t zT[2] = {6.0, 1.0} ;
169 Float_t wT[2] = {1.0, 2.0} ;
172 AliMixture(3, "Tyvek$", aT, zT, dT, -2, wT) ;
174 // --- Polystyrene foam ---
175 Float_t aF[2] = {12.011, 1.00794} ;
176 Float_t zF[2] = {6.0, 1.0} ;
177 Float_t wF[2] = {1.0, 1.0} ;
180 AliMixture(4, "Foam$", aF, zF, dF, -2, wF) ;
183 Float_t aTIT[3] = {47.88, 26.98, 54.94} ;
184 Float_t zTIT[3] = {22.0, 13.0, 25.0} ;
185 Float_t wTIT[3] = {69.0, 6.0, 1.0} ;
188 AliMixture(5, "Titanium$", aTIT, zTIT, dTIT, -3, wTIT);
191 AliMaterial(6, "Si$", 28.0855, 14., 2.33, 9.36, 42.3, 0, 0) ;
195 // --- Foam thermo insulation ---
196 Float_t aTI[2] = {12.011, 1.00794} ;
197 Float_t zTI[2] = {6.0, 1.0} ;
198 Float_t wTI[2] = {1.0, 1.0} ;
201 AliMixture(7, "Thermo Insul.$", aTI, zTI, dTI, -2, wTI) ;
204 Float_t aTX[4] = {16.0, 28.09, 12.011, 1.00794} ;
205 Float_t zTX[4] = {8.0, 14.0, 6.0, 1.0} ;
206 Float_t wTX[4] = {292.0, 68.0, 462.0, 736.0} ;
209 AliMixture(8, "Textolit$", aTX, zTX, dTX, -4, wTX) ;
212 Float_t aFR[3] = {28.0855, 15.9994, 17.749} ;
213 Float_t zFR[3] = {14., 8., 8.875} ;
214 Float_t wFR[3] = {.28, .32, .4} ;
217 AliMixture(9, "FR4$", aFR, zFR, dFR, -3, wFR) ;
219 // --- The Composite Material for micromegas (so far polyetylene) ---
220 Float_t aCM[2] = {12.01, 1.} ;
221 Float_t zCM[2] = {6., 1.} ;
222 Float_t wCM[2] = {1., 2.} ;
223 Float_t dCM = 0.935 ;
225 AliMixture(10, "Compo Mat$", aCM, zCM, dCM, -2, wCM) ;
228 AliMaterial(11, "Cu$", 63.546, 29, 8.96, 1.43, 14.8, 0, 0) ;
230 // --- G10 : Printed Circuit material ---
231 Float_t aG10[4] = { 12., 1., 16., 28.} ;
232 Float_t zG10[4] = { 6., 1., 8., 14.} ;
233 Float_t wG10[4] = { .259, .288, .248, .205} ;
236 AliMixture(12, "G10$", aG10, zG10, dG10, -4, wG10);
239 AliMaterial(13, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
241 // --- The gas mixture ---
243 Float_t aCO[2] = {12.0, 16.0} ;
244 Float_t zCO[2] = {6.0, 8.0} ;
245 Float_t wCO[2] = {1.0, 2.0} ;
246 Float_t dCO = 0.001977 ;
248 AliMixture(14, "CO2$", aCO, zCO, dCO, -2, wCO);
251 Float_t dAr = 0.001782 ;
252 AliMaterial(15, "Ar$", 39.948, 18.0, dAr, 14.0, 0., 0, 0) ;
261 Float_t absL, radL, density ;
265 gMC->Gfmate((*fIdmate)[15], namate, aGM[0], zGM[0], density, radL, absL, buf, nbuf) ; // Get properties of Ar
266 gMC->Gfmate((*fIdmate)[14], namate, aGM[1], zGM[1], density, radL, absL, buf, nbuf) ; // Get properties of CO2
269 // Create gas mixture
271 Float_t arContent = 0.80 ; // Ar-content of the Ar/CO2-mixture (80% / 20%)
274 wGM[1] = 1. - arContent ;
275 dGM = wGM[0] * dAr + wGM[1] * dCO;
277 AliMixture(16, "ArCO2$", aGM, zGM, dGM, 2, wGM) ;
279 // --- Stainless steel (let it be pure iron) ---
280 AliMaterial(17, "Steel$", 55.845, 26, 7.87, 1.76, 0., 0, 0) ;
283 AliMaterial(99, "Air$", 14.61, 7.3, 0.001205, 30420., 67500., 0, 0) ;
286 // DEFINITION OF THE TRACKING MEDIA
288 // for PHOS: idtmed[699->798] equivalent to fIdtmed[0->100]
289 Int_t * idtmed = fIdtmed->GetArray() - 699 ;
290 Int_t isxfld = gAlice->Field()->Integ() ;
291 Float_t sxmgmx = gAlice->Field()->Max() ;
293 // The scintillator of the calorimeter made of PBW04 -> idtmed[699]
294 AliMedium(0, "PHOS Xtal $", 0, 1,
295 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
297 // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[700]
298 AliMedium(1, "CPV scint. $", 1, 1,
299 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
301 // Various Aluminium parts made of Al -> idtmed[701]
302 AliMedium(2, "Al parts $", 2, 0,
303 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
305 // The Tywek which wraps the calorimeter crystals -> idtmed[702]
306 AliMedium(3, "Tyvek wrapper$", 3, 0,
307 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
309 // The Polystyrene foam around the calorimeter module -> idtmed[703]
310 AliMedium(4, "Polyst. foam $", 4, 0,
311 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
313 // The Titanium around the calorimeter crystal -> idtmed[704]
314 AliMedium(5, "Titan. cover $", 5, 0,
315 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.0001, 0.0001, 0, 0) ;
317 // The Silicon of the pin diode to read out the calorimeter crystal -> idtmed[705]
318 AliMedium(6, "Si PIN $", 6, 0,
319 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.01, 0.01, 0, 0) ;
321 // The thermo insulating material of the box which contains the calorimeter module -> idtmed[706]
322 AliMedium(7, "Thermo Insul.$", 7, 0,
323 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
325 // The Textolit which makes up the box which contains the calorimeter module -> idtmed[707]
326 AliMedium(8, "Textolit $", 8, 0,
327 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
329 // FR4: The Plastic which makes up the frame of micromegas -> idtmed[708]
330 AliMedium(9, "FR4 $", 9, 0,
331 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
334 // The Composite Material for micromegas -> idtmed[709]
335 AliMedium(10, "CompoMat $", 10, 0,
336 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
338 // Copper -> idtmed[710]
339 AliMedium(11, "Copper $", 11, 0,
340 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
342 // G10: Printed Circuit material -> idtmed[711]
344 AliMedium(12, "G10 $", 12, 0,
345 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
347 // The Lead -> idtmed[712]
349 AliMedium(13, "Lead $", 13, 0,
350 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
352 // The gas mixture: ArCo2 -> idtmed[715]
354 AliMedium(16, "ArCo2 $", 16, 1,
355 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
357 // Stainless steel -> idtmed[716]
358 AliMedium(17, "Steel $", 17, 0,
359 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
361 // Air -> idtmed[798]
362 AliMedium(99, "Air $", 99, 0,
363 isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
365 // --- Set decent energy thresholds for gamma and electron tracking
367 // Tracking threshold for photons and electrons in the scintillator crystal
368 gMC->Gstpar(idtmed[699], "CUTGAM",0.5E-4) ;
369 gMC->Gstpar(idtmed[699], "CUTELE",1.0E-4) ;
371 // --- Generate explicitly delta rays in the titan cover ---
372 gMC->Gstpar(idtmed[704], "LOSS",3.) ;
373 gMC->Gstpar(idtmed[704], "DRAY",1.) ;
374 // --- and in aluminium parts ---
375 gMC->Gstpar(idtmed[701], "LOSS",3.) ;
376 gMC->Gstpar(idtmed[701], "DRAY",1.) ;
377 // --- and in PIN diode
378 gMC->Gstpar(idtmed[705], "LOSS",3) ;
379 gMC->Gstpar(idtmed[705], "DRAY",1) ;
380 // --- and in the passive convertor
381 gMC->Gstpar(idtmed[712], "LOSS",3) ;
382 gMC->Gstpar(idtmed[712], "DRAY",1) ;
383 // Tracking threshold for photons and electrons in the gas ArC02
384 gMC->Gstpar(idtmed[715], "CUTGAM",1.E-5) ;
385 gMC->Gstpar(idtmed[715], "CUTELE",1.E-5) ;
386 gMC->Gstpar(idtmed[715], "CUTNEU",1.E-5) ;
387 gMC->Gstpar(idtmed[715], "CUTHAD",1.E-5) ;
388 gMC->Gstpar(idtmed[715], "CUTMUO",1.E-5) ;
389 gMC->Gstpar(idtmed[715], "BCUTE",1.E-5) ;
390 gMC->Gstpar(idtmed[715], "BCUTM",1.E-5) ;
391 gMC->Gstpar(idtmed[715], "DCUTE",1.E-5) ;
392 gMC->Gstpar(idtmed[715], "DCUTM",1.E-5) ;
393 gMC->Gstpar(idtmed[715], "PPCUTM",1.E-5) ;
394 gMC->Gstpar(idtmed[715], "LOSS",2.) ;
395 gMC->Gstpar(idtmed[715], "DRAY",0.) ;
396 gMC->Gstpar(idtmed[715], "STRA",2.) ;
399 //____________________________________________________________________________
400 AliPHOSGeometry * AliPHOS::GetGeometry() const
402 // gets the pointer to the AliPHOSGeometry unique instance from the folder
404 AliPHOSGeometry * rv ;
406 TFolder * alice = (TFolder*)gROOT->GetListOfBrowsables()->FindObject("YSAlice") ;
407 TString path("folders/Geometry/PHOS/") ;
409 rv = (AliPHOSGeometry*)alice->FindObject(path) ;
415 //____________________________________________________________________________
416 void AliPHOS::SetTreeAddress()
421 // AliDetector::SetTreeAddress();
425 sprintf(branchname,"%s",GetName());
427 // Branch address for hit tree
428 TTree *treeH = gAlice->TreeH();
429 if (treeH && fHits) {
430 branch = treeH->GetBranch(branchname);
431 if (branch) branch->SetAddress(&fHits);