bag in AliPHOS::StepMamager fixed, AliPHOSCPVModule.* removed
[u/mrichter/AliRoot.git] / PHOS / AliPHOSv1.cxx
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7587f5a5 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15
b2a60966 16/* $Id$ */
5f20d3fb 17
7587f5a5 18//_________________________________________________________________________
5f20d3fb 19// Implementation version v1 of PHOS Manager class
a3dfe79c 20//---
21// Layout EMC + PPSD has name GPS2:
ed4205d8 22// Produces cumulated hits
a3dfe79c 23//---
24// Layout EMC + CPV has name IHEP:
ed4205d8 25// Produces hits for CPV, cumulated hits
26//---
27// Layout EMC + CPV + PPSD has name GPS:
28// Produces hits for CPV, cumulated hits
29//---
5f20d3fb 30//*-- Author: Yves Schutz (SUBATECH)
b2a60966 31
7587f5a5 32
33// --- ROOT system ---
bea63bea 34
35#include "TBRIK.h"
36#include "TNode.h"
7587f5a5 37#include "TRandom.h"
94de3818 38#include "TTree.h"
7587f5a5 39
5f20d3fb 40
7587f5a5 41// --- Standard library ---
42
de9ec31b 43#include <stdio.h>
44#include <string.h>
45#include <stdlib.h>
46#include <strstream.h>
7587f5a5 47
48// --- AliRoot header files ---
49
50#include "AliPHOSv1.h"
51#include "AliPHOSHit.h"
52#include "AliPHOSDigit.h"
bea63bea 53#include "AliPHOSReconstructioner.h"
7587f5a5 54#include "AliRun.h"
55#include "AliConst.h"
94de3818 56#include "AliMC.h"
7587f5a5 57
58ClassImp(AliPHOSv1)
59
bea63bea 60//____________________________________________________________________________
61AliPHOSv1::AliPHOSv1()
62{
5f20d3fb 63 // ctor
ed4205d8 64
65 fReconstructioner = 0;
66 fTrackSegmentMaker = 0;
037cc66d 67
bea63bea 68}
69
7587f5a5 70//____________________________________________________________________________
71AliPHOSv1::AliPHOSv1(const char *name, const char *title):
e04976bd 72AliPHOSv0(name,title)
7587f5a5 73{
5f20d3fb 74 // ctor : title is used to identify the layout
fa412d9b 75 // GPS2 = 5 modules (EMC + PPSD)
76 // IHEP = 5 modules (EMC + CPV )
ed4205d8 77 // MIXT = 4 modules (EMC + CPV ) and 1 module (EMC + PPSD)
5f20d3fb 78 //
ed4205d8 79 // We store hits :
5f20d3fb 80 // - fHits (the "normal" one), which retains the hits associated with
81 // the current primary particle being tracked
82 // (this array is reset after each primary has been tracked).
83 //
fa412d9b 84
5f20d3fb 85 fPinElectronicNoise = 0.010 ;
037cc66d 86 fDigitThreshold = 0.01 ; // 1 GeV
87 fDigitizeA= 0. ;
88 fDigitizeB = 10000000. ;
89
5f20d3fb 90
91 // We do not want to save in TreeH the raw hits
92 // But save the cumulated hits instead (need to create the branch myself)
93 // It is put in the Digit Tree because the TreeH is filled after each primary
fa412d9b 94 // and the TreeD at the end of the event (branch is set in FinishEvent() ).
5f20d3fb 95
ed4205d8 96 fHits= new TClonesArray("AliPHOSHit",1000) ;
5f20d3fb 97
ed4205d8 98 fNhits = 0 ;
5f20d3fb 99
ed4205d8 100 fReconstructioner = 0;
101 fTrackSegmentMaker = 0;
5f20d3fb 102
5f20d3fb 103 fIshunt = 1 ; // All hits are associated with primary particles
fa412d9b 104
5f20d3fb 105}
106
107//____________________________________________________________________________
108AliPHOSv1::AliPHOSv1(AliPHOSReconstructioner * Reconstructioner, const char *name, const char *title):
109 AliPHOSv0(name,title)
110{
111 // ctor : title is used to identify the layout
112 // GPS2 = 5 modules (EMC + PPSD)
5f20d3fb 113
114 fPinElectronicNoise = 0.010 ;
115
116 // We do not want to save in TreeH the raw hits
5f20d3fb 117
ed4205d8 118 fDigits = 0 ;
119 fHits= new TClonesArray("AliPHOSHit",1000) ;
b73f246d 120
ed4205d8 121 fNhits = 0 ;
5f20d3fb 122
123 fIshunt = 1 ; // All hits are associated with primary particles
124
125 // gets an instance of the geometry parameters class
126 fGeom = AliPHOSGeometry::GetInstance(title, "") ;
127
128 if (fGeom->IsInitialized() )
88bdfa12 129 cout << "AliPHOS" << Version() << " : PHOS geometry intialized for " << fGeom->GetName() << endl ;
5f20d3fb 130 else
fc879520 131 cout << "AliPHOS" << Version() << " : PHOS geometry initialization failed !" << endl ;
5f20d3fb 132
133 // Defining the PHOS Reconstructioner
134
135 fReconstructioner = Reconstructioner ;
136
7587f5a5 137}
b2a60966 138
7587f5a5 139//____________________________________________________________________________
bea63bea 140AliPHOSv1::~AliPHOSv1()
b2a60966 141{
bea63bea 142 // dtor
5f20d3fb 143
ed4205d8 144 if ( fHits) {
145 fHits->Delete() ;
146 delete fHits ;
147 fHits = 0 ;
8dfa469d 148 }
5f20d3fb 149
037cc66d 150 if ( fSDigits) {
151 fSDigits->Delete() ;
152 delete fSDigits ;
153 fSDigits = 0 ;
154 }
155
ed4205d8 156 if ( fDigits) {
157 fDigits->Delete() ;
158 delete fDigits ;
159 fDigits = 0 ;
160 }
5f20d3fb 161
ed4205d8 162 if ( fEmcRecPoints ) {
163 fEmcRecPoints->Delete() ;
164 delete fEmcRecPoints ;
165 fEmcRecPoints = 0 ;
166 }
167
168 if ( fPpsdRecPoints ) {
169 fPpsdRecPoints->Delete() ;
170 delete fPpsdRecPoints ;
171 fPpsdRecPoints = 0 ;
172 }
fad3e5b9 173
ed4205d8 174 if ( fTrackSegments ) {
175 fTrackSegments->Delete() ;
176 delete fTrackSegments ;
177 fTrackSegments = 0 ;
178 }
179
7587f5a5 180}
181
7587f5a5 182//____________________________________________________________________________
037cc66d 183void AliPHOSv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t Id, Float_t * hits, Int_t trackpid, TLorentzVector p, Float_t * lpos)
bea63bea 184{
185 // Add a hit to the hit list.
5f20d3fb 186 // A PHOS hit is the sum of all hits in a single crystal
187 // or in a single PPSD gas cell
bea63bea 188
5f20d3fb 189 Int_t hitCounter ;
bea63bea 190 AliPHOSHit *newHit ;
5f20d3fb 191 AliPHOSHit *curHit ;
192 Bool_t deja = kFALSE ;
bea63bea 193
037cc66d 194 newHit = new AliPHOSHit(shunt, primary, tracknumber, Id, hits, trackpid, p, lpos) ;
bea63bea 195
7854a24a 196 for ( hitCounter = fNhits-1 ; hitCounter >= 0 && !deja ; hitCounter-- ) {
ed4205d8 197 curHit = (AliPHOSHit*) (*fHits)[hitCounter] ;
198 if( *curHit == *newHit ) {
199 *curHit = *curHit + *newHit ;
200 deja = kTRUE ;
5f20d3fb 201 }
202 }
203
204 if ( !deja ) {
ed4205d8 205 new((*fHits)[fNhits]) AliPHOSHit(*newHit) ;
206 fNhits++ ;
5f20d3fb 207 }
208
bea63bea 209 delete newHit;
bea63bea 210}
211
ed4205d8 212//____________________________________________________________________________
037cc66d 213void AliPHOSv1::Hits2SDigits(){
214 //Collects all hits in the same active volume into digit
ed4205d8 215
bea63bea 216 Int_t i ;
bea63bea 217 Int_t j ;
fa412d9b 218 AliPHOSHit * hit ;
bea63bea 219 AliPHOSDigit * newdigit ;
220 AliPHOSDigit * curdigit ;
221 Bool_t deja = kFALSE ;
222
037cc66d 223
ed4205d8 224 Int_t itrack ;
037cc66d 225 for (itrack=0; itrack<gAlice->GetNtrack(); itrack++){
226
ed4205d8 227 //=========== Get the Hits Tree for the Primary track itrack
228 gAlice->ResetHits();
229 gAlice->TreeH()->GetEvent(itrack);
230
037cc66d 231
ed4205d8 232 for ( i = 0 ; i < fHits->GetEntries() ; i++ ) {
233 hit = (AliPHOSHit*)fHits->At(i) ;
234
235 // Assign primary number only if contribution is significant
236 if( hit->GetEnergy() > fDigitThreshold)
237 newdigit = new AliPHOSDigit( hit->GetPrimary(), hit->GetId(), Digitize( hit->GetEnergy() ) ) ;
238 else
239 newdigit = new AliPHOSDigit( -1 , hit->GetId(), Digitize( hit->GetEnergy() ) ) ;
240 deja =kFALSE ;
241
037cc66d 242 for ( j = 0 ; j < fnSdigits ; j++) {
243 curdigit = (AliPHOSDigit*) fSDigits->At(j) ;
ed4205d8 244 if ( *curdigit == *newdigit) {
245 *curdigit = *curdigit + *newdigit ;
246 deja = kTRUE ;
247 }
bea63bea 248 }
bea63bea 249
ed4205d8 250 if ( !deja ) {
037cc66d 251 new((*fSDigits)[fnSdigits]) AliPHOSDigit(* newdigit) ;
252 fnSdigits++ ;
ed4205d8 253 }
254
255 delete newdigit ;
256 }
257
258 } // loop over tracks
037cc66d 259
260 fSDigits->Sort() ;
261
262 fnSdigits = fSDigits->GetEntries() ;
263 fSDigits->Expand(fnSdigits) ;
264
265 for (i = 0 ; i < fnSdigits ; i++) {
266 AliPHOSDigit * digit = (AliPHOSDigit *) fSDigits->At(i) ;
267 digit->SetIndexInList(i) ;
268 }
269
270 gAlice->TreeS()->Fill() ;
550bee17 271 gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
272
037cc66d 273
274}
275//____________________________________________________________________________
276void AliPHOSv1::SDigits2Digits(){
277 //Adds noise to the summable digits and removes everething below thresholds
278 //Note, that sDigits should be SORTED in accordance with abs ID.
279
280
281 gAlice->TreeS()->GetEvent(0) ;
037cc66d 282
ad8cfaf4 283 // First calculate noise induced by the PIN diode of the PbWO crystals
037cc66d 284 Int_t iCurSDigit = 0 ;
ad8cfaf4 285
037cc66d 286 //we assume, that there is al least one EMC digit...
550bee17 287 if(fSDigits->GetEntries() == 0) {
288 cout << "PHOS::SDigits2Digits> No SDigits !!! Do not produce Digits " << endl ;
289 return ;
290 }
037cc66d 291
550bee17 292 Int_t idCurSDigit = ((AliPHOSDigit *)fSDigits->At(0))->GetId() ;
037cc66d 293
294 Int_t absID ;
295 for(absID = 1; absID < fGeom->GetNModules()*fGeom->GetNPhi()*fGeom->GetNZ(); absID++){
037cc66d 296 Float_t noise = gRandom->Gaus(0., fPinElectronicNoise) ;
297 if(absID < idCurSDigit ){
037cc66d 298 if(noise >fDigitThreshold ){
037cc66d 299 new((*fDigits)[fNdigits]) AliPHOSDigit( -1,absID,Digitize(noise) ) ;
037cc66d 300 fNdigits++ ;
301 }
302 }
303 else{ //add noise and may be remove the true hit
037cc66d 304 Float_t signal = noise + Calibrate(((AliPHOSDigit *)fSDigits->At(iCurSDigit))->GetAmp()) ;
037cc66d 305 if( signal >fDigitThreshold ){
037cc66d 306 AliPHOSDigit * digit = (AliPHOSDigit*) fSDigits->At(iCurSDigit) ;
307 new((*fDigits)[fNdigits]) AliPHOSDigit( *digit ) ;
308 ((AliPHOSDigit *)fDigits->At(fNdigits))->SetAmp(Digitize(signal));
037cc66d 309 fNdigits++ ;
310 }
311
312 if(iCurSDigit < fSDigits->GetEntries()-1){
313 iCurSDigit++ ;
314 idCurSDigit = ((AliPHOSDigit*)fSDigits->At(iCurSDigit))->GetId() ;
315 }
316 else
317 idCurSDigit = 10000000; //no real hits left
318 }
ed4205d8 319
037cc66d 320 }
321
322 //remove PPSD/CPV digits below thresholds
323 Int_t idigit ;
324 for(idigit = iCurSDigit; idigit < fSDigits->GetEntries() ; idigit++){ //loop over CPV/PPSD digits
325
326 AliPHOSDigit * digit = (AliPHOSDigit *) fSDigits->At(idigit) ;
327 Float_t ene = Calibrate(digit->GetAmp()) ;
328
329 Int_t relid[4] ;
330 fGeom->AbsToRelNumbering(digit->GetId(), relid) ;
331 if ( relid[0] > fGeom->GetNCPVModules() ){ //ppsd
332 if ( ( (relid[1] > 0) && (ene > fPpsdEnergyThreshold)) || //PPSD digit
333 ( (relid[1] < 0) && (ene > fCpvEnergyThreshold ) ) ) //CPV digit
334 new((*fDigits)[fNdigits]) AliPHOSDigit( *digit ) ;
335 fNdigits++ ;
bea63bea 336 }
037cc66d 337 }
ed4205d8 338
bea63bea 339 fDigits->Compress() ;
ed4205d8 340
341 fNdigits = fDigits->GetEntries() ;
342 fDigits->Expand(fNdigits) ;
bea63bea 343
037cc66d 344 Int_t i ;
bea63bea 345 for (i = 0 ; i < fNdigits ; i++) {
037cc66d 346 AliPHOSDigit * digit = (AliPHOSDigit *) fDigits->At(i) ;
347 digit->SetIndexInList(i) ;
bea63bea 348 }
fa412d9b 349
ed4205d8 350 gAlice->TreeD()->Fill() ;
5f20d3fb 351
ed4205d8 352 gAlice->TreeD()->Write(0,TObject::kOverwrite) ;
353
354}
2ab0c725 355
5f20d3fb 356//___________________________________________________________________________
2ab0c725 357void AliPHOSv1::MakeBranch(Option_t* opt, char *file)
037cc66d 358{
359
360
361 char *cH ;
5f20d3fb 362 // Create new branche in the current Root Tree in the digit Tree
5f20d3fb 363 AliDetector::MakeBranch(opt) ;
037cc66d 364
365
366 cH = strstr(opt,"S");
367 //Create a branch for SDigits
368 if( cH ){
369 char branchname[20];
370 sprintf(branchname,"%s",GetName());
371 if(fSDigits)
372 fSDigits->Clear();
373 else
374 fSDigits = new TClonesArray("AliPHOSDigit",1000);
ad8cfaf4 375
037cc66d 376 fnSdigits = 0 ;
037cc66d 377 gAlice->MakeBranchInTree(gAlice->TreeS(),branchname,&fSDigits,fBufferSize,file);
fa412d9b 378 }
ed4205d8 379
037cc66d 380 cH = strstr(opt,"D");
381 //Create a branch for Digits
382 if( cH ){
383 char branchname[20];
384 sprintf(branchname,"%s",GetName());
ad8cfaf4 385
386 if(fDigits)
037cc66d 387 fDigits->Clear();
388 else
389 fDigits = new TClonesArray("AliPHOSDigit",1000);
390 fNdigits = 0 ;
391
ad8cfaf4 392 gAlice->MakeBranchInTree(gAlice->TreeD(),branchname,&fDigits,fBufferSize,file);
037cc66d 393 }
394
395 cH = strstr(opt,"R");
396 //Create a branch for Reconstruction
397 if( cH ){
398 char branchname[20];
399
400 Int_t splitlevel = 0 ;
ad8cfaf4 401
402 if(fEmcRecPoints)
403 fEmcRecPoints->Delete() ;
404 else
405 fEmcRecPoints = new TObjArray(100) ;
037cc66d 406
407 if ( fEmcRecPoints && gAlice->TreeR() ) {
408 sprintf(branchname,"%sEmcRP",GetName()) ;
409 gAlice->TreeR()->Branch(branchname, "TObjArray", &fEmcRecPoints, fBufferSize, splitlevel) ;
410 }
411
ad8cfaf4 412 if(fPpsdRecPoints)
413 fPpsdRecPoints->Delete() ;
414 else
415 fPpsdRecPoints = new TObjArray(100) ;
037cc66d 416
417 if ( fPpsdRecPoints && gAlice->TreeR() ) {
418 sprintf(branchname,"%sPpsdRP",GetName()) ;
419 gAlice->TreeR()->Branch(branchname, "TObjArray", &fPpsdRecPoints, fBufferSize, splitlevel) ;
420 }
421
ad8cfaf4 422 if(fTrackSegments)
423 fTrackSegments->Delete() ;
424 else
425 fTrackSegments = new TClonesArray("AliPHOSTrackSegment",100) ;
037cc66d 426
427 if ( fTrackSegments && gAlice->TreeR() ) {
428 sprintf(branchname,"%sTS",GetName()) ;
429 gAlice->TreeR()->Branch(branchname, &fTrackSegments, fBufferSize) ;
430 }
431
ad8cfaf4 432 if(fRecParticles)
433 fRecParticles->Delete() ;
434 else
435 fRecParticles = new TClonesArray("AliPHOSRecParticle",100) ;
037cc66d 436
437 if ( fRecParticles && gAlice->TreeR() ) {
438 sprintf(branchname,"%sRP",GetName()) ;
439 gAlice->TreeR()->Branch(branchname, &fRecParticles, fBufferSize) ;
440 }
441
442 }
443
bea63bea 444}
445
5f20d3fb 446//_____________________________________________________________________________
447void AliPHOSv1::Reconstruction(AliPHOSReconstructioner * Reconstructioner)
448{
449 // 1. Reinitializes the existing RecPoint, TrackSegment, and RecParticles Lists and
450 // 2. Creates TreeR with a branch for each list
451 // 3. Steers the reconstruction processes
452 // 4. Saves the 3 lists in TreeR
453 // 5. Write the Tree to File
454
455 fReconstructioner = Reconstructioner ;
037cc66d 456
5f20d3fb 457 // 1.
458
459 // gAlice->MakeTree("R") ;
5f20d3fb 460
037cc66d 461 MakeBranch("R") ;
5f20d3fb 462
463 // 3.
b73f246d 464
fad3e5b9 465 fReconstructioner->Make(fDigits, fEmcRecPoints, fPpsdRecPoints, fTrackSegments, fRecParticles);
b73f246d 466
fad3e5b9 467 printf("Reconstruction: %d %d %d %d\n",
468 fEmcRecPoints->GetEntries(),fPpsdRecPoints->GetEntries(),
b73f246d 469 fTrackSegments->GetEntries(),fRecParticles->GetEntries());
5f20d3fb 470
471 // 4. Expand or Shrink the arrays to the proper size
472
473 Int_t size ;
474
475 size = fEmcRecPoints->GetEntries() ;
476 fEmcRecPoints->Expand(size) ;
ed4205d8 477
5f20d3fb 478 size = fPpsdRecPoints->GetEntries() ;
479 fPpsdRecPoints->Expand(size) ;
480
481 size = fTrackSegments->GetEntries() ;
482 fTrackSegments->Expand(size) ;
483
484 size = fRecParticles->GetEntries() ;
485 fRecParticles->Expand(size) ;
486
487 gAlice->TreeR()->Fill() ;
5f20d3fb 488 // 5.
489
4a2ca5e9 490 gAlice->TreeR()->Write(0,TObject::kOverwrite) ;
5f20d3fb 491
492 // Deleting reconstructed objects
493 ResetReconstruction();
494
495}
496
5f20d3fb 497//____________________________________________________________________________
498void AliPHOSv1::ResetReconstruction()
499{
500 // Deleting reconstructed objects
501
b73f246d 502 if ( fEmcRecPoints ) fEmcRecPoints ->Delete();
5f20d3fb 503 if ( fPpsdRecPoints ) fPpsdRecPoints->Delete();
504 if ( fTrackSegments ) fTrackSegments->Delete();
b73f246d 505 if ( fRecParticles ) fRecParticles ->Delete();
5f20d3fb 506
507}
5f20d3fb 508
5f20d3fb 509//____________________________________________________________________________
510
7587f5a5 511void AliPHOSv1::StepManager(void)
512{
b2a60966 513 // Accumulates hits as long as the track stays in a single crystal or PPSD gas Cell
b2a60966 514
4f5bbbd4 515 Int_t relid[4] ; // (box, layer, row, column) indices
516 Int_t absid ; // absolute cell ID number
2168f43b 517 Float_t xyze[4]={0,0,0,0} ; // position wrt MRS and energy deposited
4f5bbbd4 518 TLorentzVector pos ; // Lorentz vector of the track current position
5c617c31 519 TLorentzVector pmom ; //momentum of the particle initiated hit
4f5bbbd4 520 Float_t xyd[3]={0,0,0} ; //local posiiton of the entering
521 Bool_t entered = kFALSE ;
fa412d9b 522 Int_t copy ;
7587f5a5 523
bea63bea 524 Int_t tracknumber = gAlice->CurrentTrack() ;
fa412d9b 525 Int_t primary = gAlice->GetPrimary( gAlice->CurrentTrack() );
526 TString name = fGeom->GetName() ;
037cc66d 527 Int_t trackpid = 0 ;
528
529 if( gMC->IsTrackEntering() ){ // create hit with position and momentum of new particle,
530 // but may be without energy deposition
531
532 // Current position of the hit in the local ref. system
533 gMC -> TrackPosition(pos);
534 Float_t xyzm[3], xyzd[3] ;
535 Int_t i;
536 for (i=0; i<3; i++) xyzm[i] = pos[i];
537 gMC -> Gmtod (xyzm, xyzd, 1); // transform coordinate from master to daughter system
538 xyd[0] = xyzd[0];
7854a24a 539 xyd[1] =-xyzd[1];
540 xyd[2] =-xyzd[2];
541
037cc66d 542
543 // Current momentum of the hit's track in the local ref. system
544 gMC -> TrackMomentum(pmom);
545 Float_t pm[3], pd[3];
546 for (i=0; i<3; i++) pm[i] = pmom[i];
547 gMC -> Gmtod (pm, pd, 2); // transform 3-momentum from master to daughter system
548 pmom[0] = pd[0];
549 pmom[1] =-pd[1];
550 pmom[2] =-pd[2];
551
552 trackpid = gMC->TrackPid();
553 entered = kTRUE ; // Mark to create hit even withou energy deposition
554
555 }
556
557
ed4205d8 558 if ( name == "GPS2" || name == "MIXT" ) { // ======> CPV is a GPS' PPSD
fa412d9b 559
b2a60966 560 if( gMC->CurrentVolID(copy) == gMC->VolId("GCEL") ) // We are inside a gas cell
7587f5a5 561 {
562 gMC->TrackPosition(pos) ;
563 xyze[0] = pos[0] ;
564 xyze[1] = pos[1] ;
565 xyze[2] = pos[2] ;
bea63bea 566 xyze[3] = gMC->Edep() ;
7587f5a5 567
037cc66d 568 if ( (xyze[3] != 0) || entered ) { // there is deposited energy or new particle entering PPSD
7587f5a5 569 gMC->CurrentVolOffID(5, relid[0]) ; // get the PHOS Module number
fad3e5b9 570 if ( name == "MIXT" && strcmp(gMC->CurrentVolOffName(5),"PHO1") == 0 ){
ed4205d8 571 relid[0] += fGeom->GetNModules() - fGeom->GetNPPSDModules();
fad3e5b9 572 }
7587f5a5 573 gMC->CurrentVolOffID(3, relid[1]) ; // get the Micromegas Module number
ed4205d8 574 // 1-> fGeom->GetNumberOfModulesPhi() * fGeom->GetNumberOfModulesZ() upper
575 // > fGeom->GetNumberOfModulesPhi() * fGeom->GetNumberOfModulesZ() lower
7587f5a5 576 gMC->CurrentVolOffID(1, relid[2]) ; // get the row number of the cell
577 gMC->CurrentVolID(relid[3]) ; // get the column number
578
579 // get the absolute Id number
580
bea63bea 581 fGeom->RelToAbsNumbering(relid, absid) ;
7587f5a5 582
bea63bea 583 // add current hit to the hit list
037cc66d 584 AddHit(fIshunt, primary, tracknumber, absid, xyze, trackpid, pmom, xyd);
585
7587f5a5 586
587 } // there is deposited energy
fa412d9b 588 } // We are inside the gas of the CPV
589 } // GPS2 configuration
590
ed4205d8 591 if ( name == "IHEP" || name == "MIXT" ) { // ======> CPV is a IHEP's one
fa412d9b 592
593 // Yuri Kharlov, 28 September 2000
594
595 if( gMC->CurrentVolID(copy) == gMC->VolId("CPVQ") &&
037cc66d 596 entered &&
597 gMC->TrackCharge() != 0) {
fa412d9b 598
037cc66d 599 // Digitize the current CPV hit:
600
601 // 1. find pad response and
fa412d9b 602
a3dfe79c 603 Int_t moduleNumber;
604 gMC->CurrentVolOffID(3,moduleNumber);
605 moduleNumber--;
fa412d9b 606
fa412d9b 607
3d402178 608 TClonesArray *cpvDigits = new TClonesArray("AliPHOSCPVDigit",0); // array of digits for current hit
a3dfe79c 609 CPVDigitize(pmom,xyd,moduleNumber,cpvDigits);
fa412d9b 610
611 Float_t xmean = 0;
612 Float_t zmean = 0;
613 Float_t qsum = 0;
cd461ab8 614 Int_t idigit,ndigits;
fa412d9b 615
616 // 2. go through the current digit list and sum digits in pads
617
618 ndigits = cpvDigits->GetEntriesFast();
cd461ab8 619 for (idigit=0; idigit<ndigits-1; idigit++) {
3d402178 620 AliPHOSCPVDigit *cpvDigit1 = (AliPHOSCPVDigit*) cpvDigits->UncheckedAt(idigit);
fa412d9b 621 Float_t x1 = cpvDigit1->GetXpad() ;
622 Float_t z1 = cpvDigit1->GetYpad() ;
623 for (Int_t jdigit=idigit+1; jdigit<ndigits; jdigit++) {
3d402178 624 AliPHOSCPVDigit *cpvDigit2 = (AliPHOSCPVDigit*) cpvDigits->UncheckedAt(jdigit);
fa412d9b 625 Float_t x2 = cpvDigit2->GetXpad() ;
626 Float_t z2 = cpvDigit2->GetYpad() ;
627 if (x1==x2 && z1==z2) {
628 Float_t qsum = cpvDigit1->GetQpad() + cpvDigit2->GetQpad() ;
629 cpvDigit2->SetQpad(qsum) ;
630 cpvDigits->RemoveAt(idigit) ;
631 }
632 }
633 }
634 cpvDigits->Compress() ;
635
636 // 3. add digits to temporary hit list fTmpHits
637
638 ndigits = cpvDigits->GetEntriesFast();
cd461ab8 639 for (idigit=0; idigit<ndigits; idigit++) {
3d402178 640 AliPHOSCPVDigit *cpvDigit = (AliPHOSCPVDigit*) cpvDigits->UncheckedAt(idigit);
a3dfe79c 641 relid[0] = moduleNumber + 1 ; // CPV (or PHOS) module number
fa412d9b 642 relid[1] =-1 ; // means CPV
643 relid[2] = cpvDigit->GetXpad() ; // column number of a pad
644 relid[3] = cpvDigit->GetYpad() ; // row number of a pad
645
646 // get the absolute Id number
647 fGeom->RelToAbsNumbering(relid, absid) ;
648
649 // add current digit to the temporary hit list
650 xyze[0] = 0. ;
651 xyze[1] = 0. ;
652 xyze[2] = 0. ;
653 xyze[3] = cpvDigit->GetQpad() ; // amplitude in a pad
654 primary = -1; // No need in primary for CPV
037cc66d 655 AddHit(fIshunt, primary, tracknumber, absid, xyze, trackpid, pmom, xyd);
fa412d9b 656
657 if (cpvDigit->GetQpad() > 0.02) {
658 xmean += cpvDigit->GetQpad() * (cpvDigit->GetXpad() + 0.5);
659 zmean += cpvDigit->GetQpad() * (cpvDigit->GetYpad() + 0.5);
660 qsum += cpvDigit->GetQpad();
661 }
662 }
663 delete cpvDigits;
664 }
665 } // end of IHEP configuration
7587f5a5 666
037cc66d 667
fa412d9b 668 if(gMC->CurrentVolID(copy) == gMC->VolId("PXTL") ) { // We are inside a PBWO crystal
669 gMC->TrackPosition(pos) ;
670 xyze[0] = pos[0] ;
671 xyze[1] = pos[1] ;
672 xyze[2] = pos[2] ;
673 xyze[3] = gMC->Edep() ;
ed4205d8 674
037cc66d 675
676 if ( (xyze[3] != 0) || entered ) { // Track is inside the crystal and deposits some energy or just entered
ed4205d8 677
fa412d9b 678 gMC->CurrentVolOffID(10, relid[0]) ; // get the PHOS module number ;
037cc66d 679
fad3e5b9 680 if ( name == "MIXT" && strcmp(gMC->CurrentVolOffName(10),"PHO1") == 0 )
681 relid[0] += fGeom->GetNModules() - fGeom->GetNPPSDModules();
682
fa412d9b 683 relid[1] = 0 ; // means PBW04
684 gMC->CurrentVolOffID(4, relid[2]) ; // get the row number inside the module
685 gMC->CurrentVolOffID(3, relid[3]) ; // get the cell number inside the module
686
687 // get the absolute Id number
fa412d9b 688 fGeom->RelToAbsNumbering(relid, absid) ;
ed4205d8 689
fa412d9b 690 // add current hit to the hit list
037cc66d 691 AddHit(fIshunt, primary,tracknumber, absid, xyze, trackpid,pmom, xyd);
692
ed4205d8 693
fa412d9b 694 } // there is deposited energy
695 } // we are inside a PHOS Xtal
037cc66d 696
697
fa412d9b 698}
699
700//____________________________________________________________________________
701void AliPHOSv1::CPVDigitize (TLorentzVector p, Float_t *zxhit, Int_t moduleNumber, TClonesArray *cpvDigits)
702{
703 // ------------------------------------------------------------------------
704 // Digitize one CPV hit:
705 // On input take exact 4-momentum p and position zxhit of the hit,
706 // find the pad response around this hit and
707 // put the amplitudes in the pads into array digits
708 //
709 // Author: Yuri Kharlov (after Serguei Sadovsky)
710 // 2 October 2000
711 // ------------------------------------------------------------------------
712
a3dfe79c 713 const Float_t kCelWr = fGeom->GetPadSizePhi()/2; // Distance between wires (2 wires above 1 pad)
714 const Float_t kDetR = 0.1; // Relative energy fluctuation in track for 100 e-
715 const Float_t kdEdx = 4.0; // Average energy loss in CPV;
716 const Int_t kNgamz = 5; // Ionization size in Z
717 const Int_t kNgamx = 9; // Ionization size in Phi
718 const Float_t kNoise = 0.03; // charge noise in one pad
fa412d9b 719
720 Float_t rnor1,rnor2;
721
722 // Just a reminder on axes notation in the CPV module:
723 // axis Z goes along the beam
724 // axis X goes across the beam in the module plane
725 // axis Y is a normal to the module plane showing from the IP
726
727 Float_t hitX = zxhit[0];
728 Float_t hitZ =-zxhit[1];
729 Float_t pX = p.Px();
730 Float_t pZ =-p.Pz();
731 Float_t pNorm = p.Py();
a3dfe79c 732 Float_t eloss = kdEdx;
3d402178 733
7eb9d12d 734// cout << "CPVDigitize: YVK : "<<hitX<<" "<<hitZ<<" | "<<pX<<" "<<pZ<<" "<<pNorm<<endl;
735
fa412d9b 736 Float_t dZY = pZ/pNorm * fGeom->GetCPVGasThickness();
737 Float_t dXY = pX/pNorm * fGeom->GetCPVGasThickness();
738 gRandom->Rannor(rnor1,rnor2);
a3dfe79c 739 eloss *= (1 + kDetR*rnor1) *
740 TMath::Sqrt((1 + ( pow(dZY,2) + pow(dXY,2) ) / pow(fGeom->GetCPVGasThickness(),2)));
fa412d9b 741 Float_t zhit1 = hitZ + fGeom->GetCPVActiveSize(1)/2 - dZY/2;
742 Float_t xhit1 = hitX + fGeom->GetCPVActiveSize(0)/2 - dXY/2;
743 Float_t zhit2 = zhit1 + dZY;
744 Float_t xhit2 = xhit1 + dXY;
745
a3dfe79c 746 Int_t iwht1 = (Int_t) (xhit1 / kCelWr); // wire (x) coordinate "in"
747 Int_t iwht2 = (Int_t) (xhit2 / kCelWr); // wire (x) coordinate "out"
fa412d9b 748
749 Int_t nIter;
750 Float_t zxe[3][5];
751 if (iwht1==iwht2) { // incline 1-wire hit
752 nIter = 2;
753 zxe[0][0] = (zhit1 + zhit2 - dZY*0.57735) / 2;
a3dfe79c 754 zxe[1][0] = (iwht1 + 0.5) * kCelWr;
755 zxe[2][0] = eloss/2;
fa412d9b 756 zxe[0][1] = (zhit1 + zhit2 + dZY*0.57735) / 2;
a3dfe79c 757 zxe[1][1] = (iwht1 + 0.5) * kCelWr;
758 zxe[2][1] = eloss/2;
fa412d9b 759 }
760 else if (TMath::Abs(iwht1-iwht2) != 1) { // incline 3-wire hit
761 nIter = 3;
762 Int_t iwht3 = (iwht1 + iwht2) / 2;
a3dfe79c 763 Float_t xwht1 = (iwht1 + 0.5) * kCelWr; // wire 1
764 Float_t xwht2 = (iwht2 + 0.5) * kCelWr; // wire 2
765 Float_t xwht3 = (iwht3 + 0.5) * kCelWr; // wire 3
fa412d9b 766 Float_t xwr13 = (xwht1 + xwht3) / 2; // center 13
767 Float_t xwr23 = (xwht2 + xwht3) / 2; // center 23
768 Float_t dxw1 = xhit1 - xwr13;
769 Float_t dxw2 = xhit2 - xwr23;
a3dfe79c 770 Float_t egm1 = TMath::Abs(dxw1) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + kCelWr );
771 Float_t egm2 = TMath::Abs(dxw2) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + kCelWr );
772 Float_t egm3 = kCelWr / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + kCelWr );
fa412d9b 773 zxe[0][0] = (dXY*(xwr13-xwht1)/dXY + zhit1 + zhit1) / 2;
774 zxe[1][0] = xwht1;
a3dfe79c 775 zxe[2][0] = eloss * egm1;
fa412d9b 776 zxe[0][1] = (dXY*(xwr23-xwht1)/dXY + zhit1 + zhit2) / 2;
777 zxe[1][1] = xwht2;
a3dfe79c 778 zxe[2][1] = eloss * egm2;
fa412d9b 779 zxe[0][2] = dXY*(xwht3-xwht1)/dXY + zhit1;
780 zxe[1][2] = xwht3;
a3dfe79c 781 zxe[2][2] = eloss * egm3;
fa412d9b 782 }
783 else { // incline 2-wire hit
784 nIter = 2;
a3dfe79c 785 Float_t xwht1 = (iwht1 + 0.5) * kCelWr;
786 Float_t xwht2 = (iwht2 + 0.5) * kCelWr;
fa412d9b 787 Float_t xwr12 = (xwht1 + xwht2) / 2;
788 Float_t dxw1 = xhit1 - xwr12;
789 Float_t dxw2 = xhit2 - xwr12;
790 Float_t egm1 = TMath::Abs(dxw1) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) );
791 Float_t egm2 = TMath::Abs(dxw2) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) );
792 zxe[0][0] = (zhit1 + zhit2 - dZY*egm1) / 2;
793 zxe[1][0] = xwht1;
a3dfe79c 794 zxe[2][0] = eloss * egm1;
fa412d9b 795 zxe[0][1] = (zhit1 + zhit2 + dZY*egm2) / 2;
796 zxe[1][1] = xwht2;
a3dfe79c 797 zxe[2][1] = eloss * egm2;
fa412d9b 798 }
bea63bea 799
fa412d9b 800 // Finite size of ionization region
801
ed4205d8 802 Int_t nCellZ = fGeom->GetNumberOfCPVPadsZ();
803 Int_t nCellX = fGeom->GetNumberOfCPVPadsPhi();
a3dfe79c 804 Int_t nz3 = (kNgamz+1)/2;
805 Int_t nx3 = (kNgamx+1)/2;
806 cpvDigits->Expand(nIter*kNgamx*kNgamz);
fa412d9b 807 TClonesArray &ldigits = *(TClonesArray *)cpvDigits;
808
809 for (Int_t iter=0; iter<nIter; iter++) {
810
811 Float_t zhit = zxe[0][iter];
812 Float_t xhit = zxe[1][iter];
813 Float_t qhit = zxe[2][iter];
814 Float_t zcell = zhit / fGeom->GetPadSizeZ();
815 Float_t xcell = xhit / fGeom->GetPadSizePhi();
816 if ( zcell<=0 || xcell<=0 ||
817 zcell>=nCellZ || xcell>=nCellX) return;
818 Int_t izcell = (Int_t) zcell;
819 Int_t ixcell = (Int_t) xcell;
820 Float_t zc = zcell - izcell - 0.5;
821 Float_t xc = xcell - ixcell - 0.5;
a3dfe79c 822 for (Int_t iz=1; iz<=kNgamz; iz++) {
fa412d9b 823 Int_t kzg = izcell + iz - nz3;
824 if (kzg<=0 || kzg>nCellZ) continue;
825 Float_t zg = (Float_t)(iz-nz3) - zc;
a3dfe79c 826 for (Int_t ix=1; ix<=kNgamx; ix++) {
fa412d9b 827 Int_t kxg = ixcell + ix - nx3;
828 if (kxg<=0 || kxg>nCellX) continue;
829 Float_t xg = (Float_t)(ix-nx3) - xc;
830
831 // Now calculate pad response
832 Float_t qpad = CPVPadResponseFunction(qhit,zg,xg);
a3dfe79c 833 qpad += kNoise*rnor2;
fa412d9b 834 if (qpad<0) continue;
835
836 // Fill the array with pad response ID and amplitude
3d402178 837 new(ldigits[cpvDigits->GetEntriesFast()]) AliPHOSCPVDigit(kxg,kzg,qpad);
fa412d9b 838 }
fa412d9b 839 }
fa412d9b 840 }
841}
842
843//____________________________________________________________________________
844Float_t AliPHOSv1::CPVPadResponseFunction(Float_t qhit, Float_t zhit, Float_t xhit) {
845 // ------------------------------------------------------------------------
846 // Calculate the amplitude in one CPV pad using the
847 // cumulative pad response function
848 // Author: Yuri Kharlov (after Serguei Sadovski)
849 // 3 October 2000
850 // ------------------------------------------------------------------------
851
852 Double_t dz = fGeom->GetPadSizeZ() / 2;
853 Double_t dx = fGeom->GetPadSizePhi() / 2;
854 Double_t z = zhit * fGeom->GetPadSizeZ();
855 Double_t x = xhit * fGeom->GetPadSizePhi();
856 Double_t amplitude = qhit *
857 (CPVCumulPadResponse(z+dz,x+dx) - CPVCumulPadResponse(z+dz,x-dx) -
858 CPVCumulPadResponse(z-dz,x+dx) + CPVCumulPadResponse(z-dz,x-dx));
859 return (Float_t)amplitude;
7587f5a5 860}
861
fa412d9b 862//____________________________________________________________________________
863Double_t AliPHOSv1::CPVCumulPadResponse(Double_t x, Double_t y) {
864 // ------------------------------------------------------------------------
865 // Cumulative pad response function
866 // It includes several terms from the CF decomposition in electrostatics
867 // Note: this cumulative function is wrong since omits some terms
868 // but the cell amplitude obtained with it is correct because
869 // these omitting terms cancel
870 // Author: Yuri Kharlov (after Serguei Sadovski)
871 // 3 October 2000
872 // ------------------------------------------------------------------------
873
a3dfe79c 874 const Double_t kA=1.0;
875 const Double_t kB=0.7;
fa412d9b 876
877 Double_t r2 = x*x + y*y;
878 Double_t xy = x*y;
879 Double_t cumulPRF = 0;
880 for (Int_t i=0; i<=4; i++) {
a3dfe79c 881 Double_t b1 = (2*i + 1) * kB;
fa412d9b 882 cumulPRF += TMath::Power(-1,i) * TMath::ATan( xy / (b1*TMath::Sqrt(b1*b1 + r2)) );
883 }
a3dfe79c 884 cumulPRF *= kA/(2*TMath::Pi());
fa412d9b 885 return cumulPRF;
886}
7eb9d12d 887