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 #include <strstream.h>
37 // --- AliRoot header files ---
43 #include "AliPHOSGeometry.h"
44 #include "AliPHOSQAChecker.h"
47 //____________________________________________________________________________
48 AliPHOS:: AliPHOS() : AliDetector()
50 // Create folder and task hierarchy
52 CreatePHOSWhiteBoard();
56 //____________________________________________________________________________
57 AliPHOS::AliPHOS(const char* name, const char* title): AliDetector(name, title)
59 // Create folder and task hierarchy
60 CreatePHOSWhiteBoard();
63 //____________________________________________________________________________
64 void AliPHOS::CreatePHOSWhiteBoard()
66 // create the ALICE TFolder
67 // create the ALICE TTasks
68 // add the Alice QA TTAsks
69 // create the ALICE main TFolder
70 // add the Alice QA Alarms
71 // this should be done of course by AliRun
72 //==================== BEG TO BE DONE BY AliRUN ===========================
73 TFolder *alice = gROOT->GetRootFolder()->AddFolder("YSAlice","Alice Folder") ;
74 gROOT->GetListOfBrowsables()->Add(alice, "YSAlice") ;
76 TFolder * aliceF = alice->AddFolder("WhiteBoard", "Alice memory Folder") ;
77 // make it the owner of the objects that it contains
80 TFolder * geomF = aliceF->AddFolder("Geometry", "Geometry objects") ;
82 TFolder * alarmsF = aliceF->AddFolder("QAAlarms", "Alarms raised by QA check") ;
84 TFolder * hitsF = aliceF->AddFolder("Hits", "Hits") ;
86 TFolder * sdigitsF = aliceF->AddFolder("SDigits", "Summable Digits") ;
88 TFolder * digitsF = aliceF->AddFolder("Digits", "Digits") ;
90 TFolder * rpointsF = aliceF->AddFolder("RecPoints", "RecPoints") ;
91 // TrackSegments folder
92 TFolder * tsF = aliceF->AddFolder("TrackSegments", "TrackSegments") ;
93 // RecParticles folder
94 TFolder * rparticlesF = aliceF->AddFolder("RecParticles", "RecParticles") ;
95 // make it the owner of the objects that it contains
98 sdigitsF->SetOwner() ;
100 rpointsF->SetOwner() ;
102 rparticlesF->SetOwner() ;
105 TFolder * aliceT = alice->AddFolder("tasks", "Alice tasks Folder") ;
106 // make it the owner of the objects that it contains
109 TTask * aliceQA = new TTask("QA", "Alice QA tasks") ;
110 aliceT->Add(aliceQA);
112 TTask * aliceSD = new TTask("SDigitizer", "Alice SDigitizer") ;
113 aliceT->Add(aliceSD);
115 TTask * aliceDi = new TTask("Digitizer", "Alice Digitizer") ;
116 aliceT->Add(aliceDi);
118 TTask * aliceRe = new TTask("Reconstructioner", "Alice Reconstructioner") ;
119 aliceT->Add(aliceRe);
121 //==================== END TO BE DONE BY AliRUN ===========================
123 // =================== Creating PHOS related folders
124 char * tempo = new char[80] ;
126 // creates the PHOSQA (QAChecker knows how to add itself in the tasks list)
127 sprintf(tempo, "%sCheckers container",GetName() ) ;
128 fQATask = new AliPHOSQAChecker(GetName(), tempo);
130 // creates the PHOS SDigitizer and adds it to alice main SDigitizer task
131 sprintf(tempo, "%sSDigitizers container",GetName() ) ;
132 TTask * sdT = new TTask(GetName(), tempo);
135 // creates the PHOS Digitizer and adds it to alice main Digitizer task
136 sprintf(tempo, "%sDigitizers container",GetName() ) ;
137 TTask * dT = new TTask(GetName(), tempo);
140 // creates the PHOS reconstructioner and adds it to alice main Reconstructioner task
141 sprintf(tempo, "%s Reconstructioner container",GetName() ) ;
142 TTask * reT = new TTask(GetName(), tempo);
145 // creates the PHOS clusterizer, tracksegment maker and PID and adds it to the PHOS Reconstructioner task
149 // creates the PHOS geometry folder
150 geomF->AddFolder("PHOS", "Geometry for PHOS") ;
151 // creates the PHOSQA alarm folder
152 alarmsF->AddFolder("PHOS", "QA alarms from PHOS") ;
153 // creates the PHOS Hits folder
154 hitsF->AddFolder("PHOS", "Hits for PHOS") ;
155 // creates the PHOS Summable Digits folder
156 sdigitsF->AddFolder("PHOS", "Summable Digits for PHOS") ;
157 // creates the PHOS Digits folder
158 digitsF->AddFolder("PHOS", "Digits for PHOS") ;
159 // creates the PHOS RecPoints folder
160 TFolder * prpF = rpointsF->AddFolder("PHOS", "RecPoints for PHOS") ;
161 // creates the PHOS EMC RecPoints folder
162 prpF->AddFolder("emc", "EMC RecPoints for PHOS") ;
163 // creates the PHOS CPV RecPoints folder
164 prpF->AddFolder("cpv", "CPV RecPoints for PHOS") ;
166 // creates the PHOS TrackSegments folder
167 tsF->AddFolder("PHOS", "Track Segments for PHOS") ;
168 // creates the PHOS RecParticles folder
169 rparticlesF->AddFolder("PHOS", "RecParticles for PHOS") ;
172 //____________________________________________________________________________
175 // remove the alice folder and alice QA task that PHOS creates instead of AliRun
177 // remove and delete the PHOS QA tasks
178 TTask * aliceQA = (TTask*)gROOT->FindObjectAny("YSAlice/tasks/QA") ;
179 fQATask->GetListOfTasks()->Delete() ;
180 aliceQA->GetListOfTasks()->Remove(fQATask) ;
183 // remove and delete aliceQA (should be done by AliRun)
186 //____________________________________________________________________________
187 void AliPHOS::CreateMaterials()
189 // Definitions of materials to build PHOS and associated tracking media.
190 // media number in idtmed are 699 to 798.
192 // --- The PbWO4 crystals ---
193 Float_t aX[3] = {207.19, 183.85, 16.0} ;
194 Float_t zX[3] = {82.0, 74.0, 8.0} ;
195 Float_t wX[3] = {1.0, 1.0, 4.0} ;
198 AliMixture(0, "PbWO4$", aX, zX, dX, -3, wX) ;
201 // --- The polysterene scintillator (CH) ---
202 Float_t aP[2] = {12.011, 1.00794} ;
203 Float_t zP[2] = {6.0, 1.0} ;
204 Float_t wP[2] = {1.0, 1.0} ;
207 AliMixture(1, "Polystyrene$", aP, zP, dP, -2, wP) ;
210 AliMaterial(2, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
211 // --- Absorption length is ignored ^
213 // --- Tyvek (CnH2n) ---
214 Float_t aT[2] = {12.011, 1.00794} ;
215 Float_t zT[2] = {6.0, 1.0} ;
216 Float_t wT[2] = {1.0, 2.0} ;
219 AliMixture(3, "Tyvek$", aT, zT, dT, -2, wT) ;
221 // --- Polystyrene foam ---
222 Float_t aF[2] = {12.011, 1.00794} ;
223 Float_t zF[2] = {6.0, 1.0} ;
224 Float_t wF[2] = {1.0, 1.0} ;
227 AliMixture(4, "Foam$", aF, zF, dF, -2, wF) ;
230 Float_t aTIT[3] = {47.88, 26.98, 54.94} ;
231 Float_t zTIT[3] = {22.0, 13.0, 25.0} ;
232 Float_t wTIT[3] = {69.0, 6.0, 1.0} ;
235 AliMixture(5, "Titanium$", aTIT, zTIT, dTIT, -3, wTIT);
238 AliMaterial(6, "Si$", 28.0855, 14., 2.33, 9.36, 42.3, 0, 0) ;
242 // --- Foam thermo insulation ---
243 Float_t aTI[2] = {12.011, 1.00794} ;
244 Float_t zTI[2] = {6.0, 1.0} ;
245 Float_t wTI[2] = {1.0, 1.0} ;
248 AliMixture(7, "Thermo Insul.$", aTI, zTI, dTI, -2, wTI) ;
251 Float_t aTX[4] = {16.0, 28.09, 12.011, 1.00794} ;
252 Float_t zTX[4] = {8.0, 14.0, 6.0, 1.0} ;
253 Float_t wTX[4] = {292.0, 68.0, 462.0, 736.0} ;
256 AliMixture(8, "Textolit$", aTX, zTX, dTX, -4, wTX) ;
259 Float_t aFR[3] = {28.0855, 15.9994, 17.749} ;
260 Float_t zFR[3] = {14., 8., 8.875} ;
261 Float_t wFR[3] = {.28, .32, .4} ;
264 AliMixture(9, "FR4$", aFR, zFR, dFR, -3, wFR) ;
266 // --- The Composite Material for micromegas (so far polyetylene) ---
267 Float_t aCM[2] = {12.01, 1.} ;
268 Float_t zCM[2] = {6., 1.} ;
269 Float_t wCM[2] = {1., 2.} ;
270 Float_t dCM = 0.935 ;
272 AliMixture(10, "Compo Mat$", aCM, zCM, dCM, -2, wCM) ;
275 AliMaterial(11, "Cu$", 63.546, 29, 8.96, 1.43, 14.8, 0, 0) ;
277 // --- G10 : Printed Circuit material ---
278 Float_t aG10[4] = { 12., 1., 16., 28.} ;
279 Float_t zG10[4] = { 6., 1., 8., 14.} ;
280 Float_t wG10[4] = { .259, .288, .248, .205} ;
283 AliMixture(12, "G10$", aG10, zG10, dG10, -4, wG10);
286 AliMaterial(13, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
288 // --- The gas mixture ---
290 Float_t aCO[2] = {12.0, 16.0} ;
291 Float_t zCO[2] = {6.0, 8.0} ;
292 Float_t wCO[2] = {1.0, 2.0} ;
293 Float_t dCO = 0.001977 ;
295 AliMixture(14, "CO2$", aCO, zCO, dCO, -2, wCO);
298 Float_t dAr = 0.001782 ;
299 AliMaterial(15, "Ar$", 39.948, 18.0, dAr, 14.0, 0., 0, 0) ;
308 Float_t absL, radL, density ;
312 gMC->Gfmate((*fIdmate)[15], namate, aGM[0], zGM[0], density, radL, absL, buf, nbuf) ; // Get properties of Ar
313 gMC->Gfmate((*fIdmate)[14], namate, aGM[1], zGM[1], density, radL, absL, buf, nbuf) ; // Get properties of CO2
316 // Create gas mixture
318 Float_t arContent = 0.80 ; // Ar-content of the Ar/CO2-mixture (80% / 20%)
321 wGM[1] = 1. - arContent ;
322 dGM = wGM[0] * dAr + wGM[1] * dCO;
324 AliMixture(16, "ArCO2$", aGM, zGM, dGM, 2, wGM) ;
326 // --- Stainless steel (let it be pure iron) ---
327 AliMaterial(17, "Steel$", 55.845, 26, 7.87, 1.76, 0., 0, 0) ;
330 AliMaterial(99, "Air$", 14.61, 7.3, 0.001205, 30420., 67500., 0, 0) ;
333 // DEFINITION OF THE TRACKING MEDIA
335 // for PHOS: idtmed[699->798] equivalent to fIdtmed[0->100]
336 Int_t * idtmed = fIdtmed->GetArray() - 699 ;
337 Int_t isxfld = gAlice->Field()->Integ() ;
338 Float_t sxmgmx = gAlice->Field()->Max() ;
340 // The scintillator of the calorimeter made of PBW04 -> idtmed[699]
341 AliMedium(0, "PHOS Xtal $", 0, 1,
342 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
344 // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[700]
345 AliMedium(1, "CPV scint. $", 1, 1,
346 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
348 // Various Aluminium parts made of Al -> idtmed[701]
349 AliMedium(2, "Al parts $", 2, 0,
350 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
352 // The Tywek which wraps the calorimeter crystals -> idtmed[702]
353 AliMedium(3, "Tyvek wrapper$", 3, 0,
354 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
356 // The Polystyrene foam around the calorimeter module -> idtmed[703]
357 AliMedium(4, "Polyst. foam $", 4, 0,
358 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
360 // The Titanium around the calorimeter crystal -> idtmed[704]
361 AliMedium(5, "Titan. cover $", 5, 0,
362 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.0001, 0.0001, 0, 0) ;
364 // The Silicon of the pin diode to read out the calorimeter crystal -> idtmed[705]
365 AliMedium(6, "Si PIN $", 6, 0,
366 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.01, 0.01, 0, 0) ;
368 // The thermo insulating material of the box which contains the calorimeter module -> idtmed[706]
369 AliMedium(7, "Thermo Insul.$", 7, 0,
370 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
372 // The Textolit which makes up the box which contains the calorimeter module -> idtmed[707]
373 AliMedium(8, "Textolit $", 8, 0,
374 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
376 // FR4: The Plastic which makes up the frame of micromegas -> idtmed[708]
377 AliMedium(9, "FR4 $", 9, 0,
378 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
381 // The Composite Material for micromegas -> idtmed[709]
382 AliMedium(10, "CompoMat $", 10, 0,
383 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
385 // Copper -> idtmed[710]
386 AliMedium(11, "Copper $", 11, 0,
387 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
389 // G10: Printed Circuit material -> idtmed[711]
391 AliMedium(12, "G10 $", 12, 0,
392 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
394 // The Lead -> idtmed[712]
396 AliMedium(13, "Lead $", 13, 0,
397 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
399 // The gas mixture: ArCo2 -> idtmed[715]
401 AliMedium(16, "ArCo2 $", 16, 1,
402 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
404 // Stainless steel -> idtmed[716]
405 AliMedium(17, "Steel $", 17, 0,
406 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
408 // Air -> idtmed[798]
409 AliMedium(99, "Air $", 99, 0,
410 isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
412 // --- Set decent energy thresholds for gamma and electron tracking
414 // Tracking threshold for photons and electrons in the scintillator crystal
415 gMC->Gstpar(idtmed[699], "CUTGAM",0.5E-4) ;
416 gMC->Gstpar(idtmed[699], "CUTELE",1.0E-4) ;
418 // --- Generate explicitly delta rays in the titan cover ---
419 gMC->Gstpar(idtmed[704], "LOSS",3.) ;
420 gMC->Gstpar(idtmed[704], "DRAY",1.) ;
421 // --- and in aluminium parts ---
422 gMC->Gstpar(idtmed[701], "LOSS",3.) ;
423 gMC->Gstpar(idtmed[701], "DRAY",1.) ;
424 // --- and in PIN diode
425 gMC->Gstpar(idtmed[705], "LOSS",3) ;
426 gMC->Gstpar(idtmed[705], "DRAY",1) ;
427 // --- and in the passive convertor
428 gMC->Gstpar(idtmed[712], "LOSS",3) ;
429 gMC->Gstpar(idtmed[712], "DRAY",1) ;
430 // Tracking threshold for photons and electrons in the gas ArC02
431 gMC->Gstpar(idtmed[715], "CUTGAM",1.E-5) ;
432 gMC->Gstpar(idtmed[715], "CUTELE",1.E-5) ;
433 gMC->Gstpar(idtmed[715], "CUTNEU",1.E-5) ;
434 gMC->Gstpar(idtmed[715], "CUTHAD",1.E-5) ;
435 gMC->Gstpar(idtmed[715], "CUTMUO",1.E-5) ;
436 gMC->Gstpar(idtmed[715], "BCUTE",1.E-5) ;
437 gMC->Gstpar(idtmed[715], "BCUTM",1.E-5) ;
438 gMC->Gstpar(idtmed[715], "DCUTE",1.E-5) ;
439 gMC->Gstpar(idtmed[715], "DCUTM",1.E-5) ;
440 gMC->Gstpar(idtmed[715], "PPCUTM",1.E-5) ;
441 gMC->Gstpar(idtmed[715], "LOSS",2.) ;
442 gMC->Gstpar(idtmed[715], "DRAY",0.) ;
443 gMC->Gstpar(idtmed[715], "STRA",2.) ;
446 //____________________________________________________________________________
447 AliPHOSGeometry * AliPHOS::GetGeometry() const
449 // gets the pointer to the AliPHOSGeometry unique instance from the folder
451 AliPHOSGeometry * rv = 0 ;
453 TString path("YSAlice/WhiteBoard/Geometry/PHOS/") ;
455 rv = (AliPHOSGeometry*)gROOT->FindObjectAny(path) ;
459 //____________________________________________________________________________
460 void AliPHOS::SetTreeAddress()
465 // AliDetector::SetTreeAddress();
469 sprintf(branchname,"%s",GetName());
471 // Branch address for hit tree
472 TTree *treeH = gAlice->TreeH();
473 if (treeH && fHits) {
474 branch = treeH->GetBranch(branchname);
475 if (branch) branch->SetAddress(&fHits);
479 //____________________________________________________________________________
480 void AliPHOS::WriteQA()
483 // Make TreeQA in the output file.
486 fTreeQA = new TTree("TreeQA", "QA Alarms") ;
487 // Create Alarms branches
488 Int_t bufferSize = 32000 ;
489 Int_t splitlevel = 0 ;
490 TFolder * alarmsF = (TFolder*)gROOT->FindObjectAny("YSAlice/WhiteBoard/QAAlarms/PHOS") ;
491 TString branchName(alarmsF->GetName());
492 TBranch * alarmsBranch = fTreeQA->Branch(branchName,"TFolder", &alarmsF, bufferSize, splitlevel);
493 TString branchTitle = branchName + " QA alarms" ;
494 alarmsBranch->SetTitle(branchTitle);
495 alarmsBranch->Fill() ;