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 *
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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
53 CreatePHOSWhiteBoard();
57 //____________________________________________________________________________
58 AliPHOS::AliPHOS(const char* name, const char* title): AliDetector(name, title)
60 // Create folder and task hierarchy
62 CreatePHOSWhiteBoard();
65 //____________________________________________________________________________
66 void AliPHOS::CreatePHOSWhiteBoard()
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
74 //==================== BEG TO BE DONE BY AliRUN ===========================
75 if ( ! (gROOT->GetRootFolder()->FindObject("YSAlice")) ) {
76 TFolder *alice = gROOT->GetRootFolder()->AddFolder("YSAlice","Alice Folder") ;
77 gROOT->GetListOfBrowsables()->Add(alice, "YSAlice") ;
79 TFolder * aliceF = alice->AddFolder("WhiteBoard", "Alice memory Folder") ;
80 // make it the owner of the objects that it contains
83 aliceF->AddFolder("Geometry", "Geometry objects") ;
85 TFolder * alarmsF = aliceF->AddFolder("QAAlarms", "Alarms raised by QA check") ;
87 TFolder * hitsF = aliceF->AddFolder("Hits", "Hits") ;
89 TFolder * sdigitsF = aliceF->AddFolder("SDigits", "Summable Digits") ;
91 TFolder * digitsF = aliceF->AddFolder("Digits", "Digits") ;
93 TFolder * rpointsF = aliceF->AddFolder("RecPoints", "RecPoints") ;
94 // TrackSegments folder
95 TFolder * tsF = aliceF->AddFolder("TrackSegments", "TrackSegments") ;
96 // RecParticles folder
97 TFolder * rparticlesF = aliceF->AddFolder("RecParticles", "RecParticles") ;
98 // make it the owner of the objects that it contains
101 sdigitsF->SetOwner() ;
102 digitsF->SetOwner() ;
103 rpointsF->SetOwner() ;
105 rparticlesF->SetOwner() ;
108 TFolder * aliceT = alice->AddFolder("tasks", "Alice tasks Folder") ;
109 // make it the owner of the objects that it contains
112 TTask * aliceQA = new TTask("QA", "Alice QA tasks") ;
113 aliceT->Add(aliceQA);
115 TTask * aliceSD = new TTask("SDigitizer", "Alice SDigitizer") ;
116 aliceT->Add(aliceSD);
118 TTask * aliceDi = new TTask("Digitizer", "Alice Digitizer") ;
119 aliceT->Add(aliceDi);
121 TTask * aliceRe = new TTask("Reconstructioner", "Alice Reconstructioner") ;
122 aliceT->Add(aliceRe);
124 //==================== END TO BE DONE BY AliRUN ===========================
126 // =================== Creating PHOS related folders
127 char * tempo = new char[80] ;
129 // creates the PHOSQA (QAChecker knows how to add itself in the tasks list)
130 sprintf(tempo, "%sCheckers container",GetName() ) ;
131 fQATask = new AliPHOSQAChecker(GetName(), tempo);
133 // creates the PHOS SDigitizer and adds it to alice main SDigitizer task
134 sprintf(tempo, "%sSDigitizers container",GetName() ) ;
135 TTask * sdT = new TTask(GetName(), tempo);
136 TTask * task = (TTask*)(gROOT->GetRootFolder()->FindObjectAny("SDigitizer")) ;
139 // creates the PHOS Digitizer and adds it to alice main Digitizer task
140 sprintf(tempo, "%sDigitizers container",GetName() ) ;
141 TTask * dT = new TTask(GetName(), tempo);
142 task = (TTask*)(gROOT->GetRootFolder()->FindObjectAny("Digitizer")) ;
145 // creates the PHOS reconstructioner and adds it to alice main Reconstructioner task
146 sprintf(tempo, "%s Reconstructioner container",GetName() ) ;
147 TTask * reT = new TTask(GetName(), tempo);
148 task = (TTask*)(gROOT->GetRootFolder()->FindObjectAny("Reconstructioner")) ;
151 // creates the PHOS clusterizer, tracksegment maker and PID and adds it to the PHOS Reconstructioner task
155 // creates the PHOS geometry folder
156 TFolder * folder = (TFolder*)(gROOT->GetRootFolder()->FindObjectAny("Geometry")) ;
157 folder->AddFolder("PHOS", "Geometry for PHOS") ;
158 // creates the PHOSQA alarm folder
159 folder = (TFolder*)(gROOT->GetRootFolder()->FindObjectAny("QAAlarms")) ;
160 folder->AddFolder("PHOS", "QA alarms from PHOS") ;
161 // creates the PHOS Hits folder
162 folder = (TFolder*)(gROOT->GetRootFolder()->FindObjectAny("Hits")) ;
163 folder->AddFolder("PHOS", "Hits for PHOS") ;
164 // creates the PHOS Summable Digits folder
165 folder = (TFolder*)(gROOT->GetRootFolder()->FindObjectAny("SDigits")) ;
166 folder->AddFolder("PHOS", "Summable Digits for PHOS") ;
167 // creates the PHOS Digits folder
168 folder = (TFolder*)(gROOT->GetRootFolder()->FindObjectAny("Digits")) ;
169 folder->AddFolder("PHOS", "Digits for PHOS") ;
170 // creates the PHOS RecPoints folder
171 folder = (TFolder*)(gROOT->GetRootFolder()->FindObjectAny("RecPoints")) ;
172 TFolder * prpF = folder->AddFolder("PHOS", "RecPoints for PHOS") ;
173 // creates the PHOS EMC RecPoints folder
174 prpF->AddFolder("emc", "EMC RecPoints for PHOS") ;
175 // creates the PHOS CPV RecPoints folder
176 prpF->AddFolder("cpv", "CPV RecPoints for PHOS") ;
178 // creates the PHOS TrackSegments folder
179 folder = (TFolder*)(gROOT->GetRootFolder()->FindObjectAny("TrackSegments")) ;
180 folder->AddFolder("PHOS", "Track Segments for PHOS") ;
181 // creates the PHOS RecParticles folder
182 folder = (TFolder*)(gROOT->GetRootFolder()->FindObjectAny("RecParticles")) ;
183 folder->AddFolder("PHOS", "RecParticles for PHOS") ;
186 //____________________________________________________________________________
189 // remove the alice folder and alice QA task that PHOS creates instead of AliRun
191 // remove and delete the PHOS related items in folders
193 TFolder * foldera = (TFolder*)(gROOT->GetRootFolder()->FindObjectAny("Geometry")) ;
194 TFolder * folderp = (TFolder*)foldera->FindObject("PHOS") ;
196 foldera->Remove(folderp) ;
198 foldera = (TFolder*)(gROOT->GetRootFolder()->FindObjectAny("QAAlarms")) ;
199 folderp = (TFolder*)foldera->FindObject("PHOS") ;
201 foldera->Remove(folderp) ;
203 foldera = (TFolder*)(gROOT->GetRootFolder()->FindObjectAny("Hits")) ;
204 folderp = (TFolder*)foldera->FindObject("PHOS") ;
206 foldera->Remove(folderp) ;
208 foldera = (TFolder*)(gROOT->GetRootFolder()->FindObjectAny("SDigits")) ;
209 folderp = (TFolder*)foldera->FindObject("PHOS") ;
211 foldera->Remove(folderp) ;
213 foldera = (TFolder*)(gROOT->GetRootFolder()->FindObjectAny("Digits")) ;
214 folderp = (TFolder*)foldera->FindObject("PHOS") ;
216 foldera->Remove(folderp) ;
218 foldera = (TFolder*)(gROOT->GetRootFolder()->FindObjectAny("RecPoints")) ;
219 folderp = (TFolder*)foldera->FindObject("PHOS") ;
221 foldera->Remove(folderp) ;
223 foldera = (TFolder*)(gROOT->GetRootFolder()->FindObjectAny("TrackSegments")) ;
224 folderp = (TFolder*)foldera->FindObject("PHOS") ;
226 foldera->Remove(folderp) ;
228 foldera = (TFolder*)(gROOT->GetRootFolder()->FindObjectAny("RecParticles")) ;
229 folderp = (TFolder*)foldera->FindObject("PHOS") ;
231 foldera->Remove(folderp) ;
234 TTask * taska = (TTask*)gROOT->FindObjectAny("QA") ;
235 TTask * taskp = (TTask*)taska->GetListOfTasks()->FindObject("PHOS") ;
236 // taskp->GetListOfTasks()->Delete() ;
237 taska->GetListOfTasks()->Remove(taskp) ;
240 taska = (TTask*)gROOT->FindObjectAny("SDigitizer") ;
241 taskp = (TTask*)taska->GetListOfTasks()->FindObject("PHOS") ;
242 taskp->GetListOfTasks()->Delete() ;
243 taska->GetListOfTasks()->Remove(taskp) ;
246 taska = (TTask*)gROOT->FindObjectAny("Digitizer") ;
247 taskp = (TTask*)taska->GetListOfTasks()->FindObject("PHOS") ;
248 taskp->GetListOfTasks()->Delete() ;
249 taska->GetListOfTasks()->Remove(taskp) ;
251 //Reconstructioner tasks
252 taska = (TTask*)gROOT->FindObjectAny("Reconstructioner") ;
253 taskp = (TTask*)taska->GetListOfTasks()->FindObject("PHOS") ;
254 taskp->GetListOfTasks()->Delete() ;
255 taska->GetListOfTasks()->Remove(taskp) ;
257 // remove and delete aliceQA (should be done by AliRun)
260 //____________________________________________________________________________
261 void AliPHOS::CreateMaterials()
263 // Definitions of materials to build PHOS and associated tracking media.
264 // media number in idtmed are 699 to 798.
266 // --- The PbWO4 crystals ---
267 Float_t aX[3] = {207.19, 183.85, 16.0} ;
268 Float_t zX[3] = {82.0, 74.0, 8.0} ;
269 Float_t wX[3] = {1.0, 1.0, 4.0} ;
272 AliMixture(0, "PbWO4$", aX, zX, dX, -3, wX) ;
275 // --- The polysterene scintillator (CH) ---
276 Float_t aP[2] = {12.011, 1.00794} ;
277 Float_t zP[2] = {6.0, 1.0} ;
278 Float_t wP[2] = {1.0, 1.0} ;
281 AliMixture(1, "Polystyrene$", aP, zP, dP, -2, wP) ;
284 AliMaterial(2, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
285 // --- Absorption length is ignored ^
287 // --- Tyvek (CnH2n) ---
288 Float_t aT[2] = {12.011, 1.00794} ;
289 Float_t zT[2] = {6.0, 1.0} ;
290 Float_t wT[2] = {1.0, 2.0} ;
293 AliMixture(3, "Tyvek$", aT, zT, dT, -2, wT) ;
295 // --- Polystyrene foam ---
296 Float_t aF[2] = {12.011, 1.00794} ;
297 Float_t zF[2] = {6.0, 1.0} ;
298 Float_t wF[2] = {1.0, 1.0} ;
301 AliMixture(4, "Foam$", aF, zF, dF, -2, wF) ;
304 Float_t aTIT[3] = {47.88, 26.98, 54.94} ;
305 Float_t zTIT[3] = {22.0, 13.0, 25.0} ;
306 Float_t wTIT[3] = {69.0, 6.0, 1.0} ;
309 AliMixture(5, "Titanium$", aTIT, zTIT, dTIT, -3, wTIT);
312 AliMaterial(6, "Si$", 28.0855, 14., 2.33, 9.36, 42.3, 0, 0) ;
316 // --- Foam thermo insulation ---
317 Float_t aTI[2] = {12.011, 1.00794} ;
318 Float_t zTI[2] = {6.0, 1.0} ;
319 Float_t wTI[2] = {1.0, 1.0} ;
322 AliMixture(7, "Thermo Insul.$", aTI, zTI, dTI, -2, wTI) ;
325 Float_t aTX[4] = {16.0, 28.09, 12.011, 1.00794} ;
326 Float_t zTX[4] = {8.0, 14.0, 6.0, 1.0} ;
327 Float_t wTX[4] = {292.0, 68.0, 462.0, 736.0} ;
330 AliMixture(8, "Textolit$", aTX, zTX, dTX, -4, wTX) ;
333 Float_t aFR[3] = {28.0855, 15.9994, 17.749} ;
334 Float_t zFR[3] = {14., 8., 8.875} ;
335 Float_t wFR[3] = {.28, .32, .4} ;
338 AliMixture(9, "FR4$", aFR, zFR, dFR, -3, wFR) ;
340 // --- The Composite Material for micromegas (so far polyetylene) ---
341 Float_t aCM[2] = {12.01, 1.} ;
342 Float_t zCM[2] = {6., 1.} ;
343 Float_t wCM[2] = {1., 2.} ;
344 Float_t dCM = 0.935 ;
346 AliMixture(10, "Compo Mat$", aCM, zCM, dCM, -2, wCM) ;
349 AliMaterial(11, "Cu$", 63.546, 29, 8.96, 1.43, 14.8, 0, 0) ;
351 // --- G10 : Printed Circuit material ---
352 Float_t aG10[4] = { 12., 1., 16., 28.} ;
353 Float_t zG10[4] = { 6., 1., 8., 14.} ;
354 Float_t wG10[4] = { .259, .288, .248, .205} ;
357 AliMixture(12, "G10$", aG10, zG10, dG10, -4, wG10);
360 AliMaterial(13, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
362 // --- The gas mixture ---
364 Float_t aCO[2] = {12.0, 16.0} ;
365 Float_t zCO[2] = {6.0, 8.0} ;
366 Float_t wCO[2] = {1.0, 2.0} ;
367 Float_t dCO = 0.001977 ;
369 AliMixture(14, "CO2$", aCO, zCO, dCO, -2, wCO);
372 Float_t dAr = 0.001782 ;
373 AliMaterial(15, "Ar$", 39.948, 18.0, dAr, 14.0, 0., 0, 0) ;
382 Float_t absL, radL, density ;
386 gMC->Gfmate((*fIdmate)[15], namate, aGM[0], zGM[0], density, radL, absL, buf, nbuf) ; // Get properties of Ar
387 gMC->Gfmate((*fIdmate)[14], namate, aGM[1], zGM[1], density, radL, absL, buf, nbuf) ; // Get properties of CO2
390 // Create gas mixture
392 Float_t arContent = 0.80 ; // Ar-content of the Ar/CO2-mixture (80% / 20%)
395 wGM[1] = 1. - arContent ;
396 dGM = wGM[0] * dAr + wGM[1] * dCO;
398 AliMixture(16, "ArCO2$", aGM, zGM, dGM, 2, wGM) ;
400 // --- Stainless steel (let it be pure iron) ---
401 AliMaterial(17, "Steel$", 55.845, 26, 7.87, 1.76, 0., 0, 0) ;
404 AliMaterial(99, "Air$", 14.61, 7.3, 0.001205, 30420., 67500., 0, 0) ;
407 // DEFINITION OF THE TRACKING MEDIA
409 // for PHOS: idtmed[699->798] equivalent to fIdtmed[0->100]
410 Int_t * idtmed = fIdtmed->GetArray() - 699 ;
411 Int_t isxfld = gAlice->Field()->Integ() ;
412 Float_t sxmgmx = gAlice->Field()->Max() ;
414 // The scintillator of the calorimeter made of PBW04 -> idtmed[699]
415 AliMedium(0, "PHOS Xtal $", 0, 1,
416 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
418 // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[700]
419 AliMedium(1, "CPV scint. $", 1, 1,
420 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
422 // Various Aluminium parts made of Al -> idtmed[701]
423 AliMedium(2, "Al parts $", 2, 0,
424 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
426 // The Tywek which wraps the calorimeter crystals -> idtmed[702]
427 AliMedium(3, "Tyvek wrapper$", 3, 0,
428 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
430 // The Polystyrene foam around the calorimeter module -> idtmed[703]
431 AliMedium(4, "Polyst. foam $", 4, 0,
432 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
434 // The Titanium around the calorimeter crystal -> idtmed[704]
435 AliMedium(5, "Titan. cover $", 5, 0,
436 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.0001, 0.0001, 0, 0) ;
438 // The Silicon of the pin diode to read out the calorimeter crystal -> idtmed[705]
439 AliMedium(6, "Si PIN $", 6, 0,
440 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.01, 0.01, 0, 0) ;
442 // The thermo insulating material of the box which contains the calorimeter module -> idtmed[706]
443 AliMedium(7, "Thermo Insul.$", 7, 0,
444 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
446 // The Textolit which makes up the box which contains the calorimeter module -> idtmed[707]
447 AliMedium(8, "Textolit $", 8, 0,
448 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
450 // FR4: The Plastic which makes up the frame of micromegas -> idtmed[708]
451 AliMedium(9, "FR4 $", 9, 0,
452 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
455 // The Composite Material for micromegas -> idtmed[709]
456 AliMedium(10, "CompoMat $", 10, 0,
457 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
459 // Copper -> idtmed[710]
460 AliMedium(11, "Copper $", 11, 0,
461 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
463 // G10: Printed Circuit material -> idtmed[711]
465 AliMedium(12, "G10 $", 12, 0,
466 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
468 // The Lead -> idtmed[712]
470 AliMedium(13, "Lead $", 13, 0,
471 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
473 // The gas mixture: ArCo2 -> idtmed[715]
475 AliMedium(16, "ArCo2 $", 16, 1,
476 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
478 // Stainless steel -> idtmed[716]
479 AliMedium(17, "Steel $", 17, 0,
480 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
482 // Air -> idtmed[798]
483 AliMedium(99, "Air $", 99, 0,
484 isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
486 // --- Set decent energy thresholds for gamma and electron tracking
488 // Tracking threshold for photons and electrons in the scintillator crystal
489 gMC->Gstpar(idtmed[699], "CUTGAM",0.5E-4) ;
490 gMC->Gstpar(idtmed[699], "CUTELE",1.0E-4) ;
492 // --- Generate explicitly delta rays in the titan cover ---
493 gMC->Gstpar(idtmed[704], "LOSS",3.) ;
494 gMC->Gstpar(idtmed[704], "DRAY",1.) ;
495 // --- and in aluminium parts ---
496 gMC->Gstpar(idtmed[701], "LOSS",3.) ;
497 gMC->Gstpar(idtmed[701], "DRAY",1.) ;
498 // --- and in PIN diode
499 gMC->Gstpar(idtmed[705], "LOSS",3) ;
500 gMC->Gstpar(idtmed[705], "DRAY",1) ;
501 // --- and in the passive convertor
502 gMC->Gstpar(idtmed[712], "LOSS",3) ;
503 gMC->Gstpar(idtmed[712], "DRAY",1) ;
504 // Tracking threshold for photons and electrons in the gas ArC02
505 gMC->Gstpar(idtmed[715], "CUTGAM",1.E-5) ;
506 gMC->Gstpar(idtmed[715], "CUTELE",1.E-5) ;
507 gMC->Gstpar(idtmed[715], "CUTNEU",1.E-5) ;
508 gMC->Gstpar(idtmed[715], "CUTHAD",1.E-5) ;
509 gMC->Gstpar(idtmed[715], "CUTMUO",1.E-5) ;
510 gMC->Gstpar(idtmed[715], "BCUTE",1.E-5) ;
511 gMC->Gstpar(idtmed[715], "BCUTM",1.E-5) ;
512 gMC->Gstpar(idtmed[715], "DCUTE",1.E-5) ;
513 gMC->Gstpar(idtmed[715], "DCUTM",1.E-5) ;
514 gMC->Gstpar(idtmed[715], "PPCUTM",1.E-5) ;
515 gMC->Gstpar(idtmed[715], "LOSS",2.) ;
516 gMC->Gstpar(idtmed[715], "DRAY",0.) ;
517 gMC->Gstpar(idtmed[715], "STRA",2.) ;
520 //____________________________________________________________________________
521 AliPHOSGeometry * AliPHOS::GetGeometry() const
523 // gets the pointer to the AliPHOSGeometry unique instance from the folder
525 AliPHOSGeometry * rv = 0 ;
527 TString path("YSAlice/WhiteBoard/Geometry/PHOS/") ;
529 rv = (AliPHOSGeometry*)gROOT->FindObjectAny(path) ;
533 //____________________________________________________________________________
534 void AliPHOS::SetTreeAddress()
539 // AliDetector::SetTreeAddress();
543 sprintf(branchname,"%s",GetName());
545 // Branch address for hit tree
546 TTree *treeH = gAlice->TreeH();
547 if (treeH && fHits) {
548 branch = treeH->GetBranch(branchname);
549 if (branch) branch->SetAddress(&fHits);
553 //____________________________________________________________________________
554 void AliPHOS::WriteQA()
557 // Make TreeQA in the output file.
560 fTreeQA = new TTree("TreeQA", "QA Alarms") ;
561 // Create Alarms branches
562 Int_t bufferSize = 32000 ;
563 Int_t splitlevel = 0 ;
564 TFolder * alarmsF = (TFolder*)gROOT->FindObjectAny("YSAlice/WhiteBoard/QAAlarms/PHOS") ;
565 TString branchName(alarmsF->GetName());
566 TBranch * alarmsBranch = fTreeQA->Branch(branchName,"TFolder", &alarmsF, bufferSize, splitlevel);
567 TString branchTitle = branchName + " QA alarms" ;
568 alarmsBranch->SetTitle(branchTitle);
569 alarmsBranch->Fill() ;