Infinit loop in PrintRecPoints fixed
[u/mrichter/AliRoot.git] / PHOS / AliPHOSDebug.cxx
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b37750a6 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
16/* $Id$ */
17
18//_________________________________________________________________________
19// Implementation version v1 of PHOS Manager class
20//---
21// Layout EMC + PPSD has name GPS2:
22// Produces cumulated hits
23//---
24// Layout EMC + CPV has name IHEP:
25// Produces hits for CPV, cumulated hits
26//---
27// Layout EMC + CPV + PPSD has name GPS:
28// Produces hits for CPV, cumulated hits
29//---
30//*-- Author: Yves Schutz (SUBATECH)
31
32
33// --- ROOT system ---
34
35#include "TBRIK.h"
36#include "TNode.h"
37#include "TRandom.h"
38#include "TTree.h"
39
40
41// --- Standard library ---
42
43#include <stdio.h>
44#include <string.h>
45#include <stdlib.h>
46#include <strstream.h>
47
48// --- AliRoot header files ---
49
50#include "AliPHOSv1.h"
51#include "AliPHOSHit.h"
52#include "AliPHOSDigit.h"
53#include "AliPHOSReconstructioner.h"
54#include "AliRun.h"
55#include "AliConst.h"
88cb7938 56#include "AliMC.h"
b37750a6 57
58ClassImp(AliPHOSv1)
59
60//____________________________________________________________________________
61AliPHOSv1::AliPHOSv1():
62AliPHOSv0()
63{
64 // ctor
65
66 fReconstructioner = 0;
67 fTrackSegmentMaker = 0;
68
69}
70
71//____________________________________________________________________________
72AliPHOSv1::AliPHOSv1(const char *name, const char *title):
73AliPHOSv0(name,title)
74{
75 // ctor : title is used to identify the layout
76 // GPS2 = 5 modules (EMC + PPSD)
77 // IHEP = 5 modules (EMC + CPV )
78 // MIXT = 4 modules (EMC + CPV ) and 1 module (EMC + PPSD)
79 //
80 // We store hits :
81 // - fHits (the "normal" one), which retains the hits associated with
82 // the current primary particle being tracked
83 // (this array is reset after each primary has been tracked).
84 //
85
86 fPinElectronicNoise = 0.010 ;
87 fDigitThreshold = 0.01 ; // 1 GeV
88 fDigitizeA= 0. ;
89 fDigitizeB = 10000000. ;
90
91
92 // We do not want to save in TreeH the raw hits
93 // But save the cumulated hits instead (need to create the branch myself)
94 // It is put in the Digit Tree because the TreeH is filled after each primary
95 // and the TreeD at the end of the event (branch is set in FinishEvent() ).
96
97 fHits= new TClonesArray("AliPHOSHit",1000) ;
98
99 fNhits = 0 ;
100
101 fReconstructioner = 0;
102 fTrackSegmentMaker = 0;
103
104 fIshunt = 1 ; // All hits are associated with primary particles
105
106}
107
108//____________________________________________________________________________
109AliPHOSv1::AliPHOSv1(AliPHOSReconstructioner * Reconstructioner, const char *name, const char *title):
110 AliPHOSv0(name,title)
111{
112 // ctor : title is used to identify the layout
113 // GPS2 = 5 modules (EMC + PPSD)
114
115 fPinElectronicNoise = 0.010 ;
116
117 // We do not want to save in TreeH the raw hits
118
119 fDigits = 0 ;
120 fHits= new TClonesArray("AliPHOSHit",1000) ;
121
122 fNhits = 0 ;
123
124 fIshunt = 1 ; // All hits are associated with primary particles
125
126 // gets an instance of the geometry parameters class
fa7cce36 127 AliPHOSGeometry::GetInstance(title, "") ;
b37750a6 128
fa7cce36 129 if (GetGeometry()->IsInitialized() )
21cd0c07 130 Info("AliPHOSv1", "AliPHOS %d : PHOS geometry intialized for %s", Version(), GetGeometry()->GetName() );
b37750a6 131 else
21cd0c07 132 Info("AliPHOSv1", "AliPHOS %d : PHOS geometry initialization failed !", Version() ) ;
b37750a6 133
134 // Defining the PHOS Reconstructioner
135
136 fReconstructioner = Reconstructioner ;
137
138}
139
140//____________________________________________________________________________
141AliPHOSv1::~AliPHOSv1()
142{
143 // dtor
144
145 if ( fHits) {
146 fHits->Delete() ;
147 delete fHits ;
148 fHits = 0 ;
149 }
150
151 if ( fSDigits) {
152 fSDigits->Delete() ;
153 delete fSDigits ;
154 fSDigits = 0 ;
155 }
156
157 if ( fDigits) {
158 fDigits->Delete() ;
159 delete fDigits ;
160 fDigits = 0 ;
161 }
162
163 if ( fEmcRecPoints ) {
164 fEmcRecPoints->Delete() ;
165 delete fEmcRecPoints ;
166 fEmcRecPoints = 0 ;
167 }
168
169 if ( fPpsdRecPoints ) {
170 fPpsdRecPoints->Delete() ;
171 delete fPpsdRecPoints ;
172 fPpsdRecPoints = 0 ;
173 }
174
175 if ( fTrackSegments ) {
176 fTrackSegments->Delete() ;
177 delete fTrackSegments ;
178 fTrackSegments = 0 ;
179 }
180
181}
182
183//____________________________________________________________________________
184void 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)
185{
186 // Add a hit to the hit list.
187 // A PHOS hit is the sum of all hits in a single crystal
188 // or in a single PPSD gas cell
189
190 Int_t hitCounter ;
191 AliPHOSHit *newHit ;
192 AliPHOSHit *curHit ;
193 Bool_t deja = kFALSE ;
194
195 newHit = new AliPHOSHit(shunt, primary, tracknumber, Id, hits, trackpid, p, lpos) ;
196
197 for ( hitCounter = fNhits-1 ; hitCounter >= 0 && !deja ; hitCounter-- ) {
198 curHit = (AliPHOSHit*) (*fHits)[hitCounter] ;
199 if( *curHit == *newHit ) {
200 *curHit = *curHit + *newHit ;
201 deja = kTRUE ;
202 }
203 }
204
205 if ( !deja ) {
206 new((*fHits)[fNhits]) AliPHOSHit(*newHit) ;
207 fNhits++ ;
208 }
209
210 delete newHit;
211}
212
213//____________________________________________________________________________
a4e98857 214void AliPHOSv1::Hits2SDigits()
215{
216 // Collects all hits in the same active volume into digit
217 // OBSOLETE replace by SDigitizer
b37750a6 218
219 Int_t i ;
220 Int_t j ;
221 AliPHOSHit * hit ;
222 AliPHOSDigit * newdigit ;
223 AliPHOSDigit * curdigit ;
224 Bool_t deja = kFALSE ;
225
226
227 Int_t itrack ;
228 for (itrack=0; itrack<gAlice->GetNtrack(); itrack++){
229
230 //=========== Get the Hits Tree for the Primary track itrack
88cb7938 231 gAlice->ResetHits();
232 if (TreeH() == 0x0)
233 {
234 Error("Hits2SDigits","Can not find TreeH in the folder");
235 return;
236 }
237 TreeH()->GetEvent(itrack);
b37750a6 238
239
240 for ( i = 0 ; i < fHits->GetEntries() ; i++ ) {
241 hit = (AliPHOSHit*)fHits->At(i) ;
242
243 // Assign primary number only if contribution is significant
244 if( hit->GetEnergy() > fDigitThreshold)
245 newdigit = new AliPHOSDigit( hit->GetPrimary(), hit->GetId(), Digitize( hit->GetEnergy() ) ) ;
246 else
247 newdigit = new AliPHOSDigit( -1 , hit->GetId(), Digitize( hit->GetEnergy() ) ) ;
248 deja =kFALSE ;
249
250 for ( j = 0 ; j < fnSdigits ; j++) {
251 curdigit = (AliPHOSDigit*) fSDigits->At(j) ;
252 if ( *curdigit == *newdigit) {
253 *curdigit = *curdigit + *newdigit ;
254 deja = kTRUE ;
255 }
256 }
257
258 if ( !deja ) {
259 new((*fSDigits)[fnSdigits]) AliPHOSDigit(* newdigit) ;
260 fnSdigits++ ;
261 }
262
263 delete newdigit ;
264 }
265
266 } // loop over tracks
267
268 fSDigits->Sort() ;
269
270 fnSdigits = fSDigits->GetEntries() ;
271 fSDigits->Expand(fnSdigits) ;
272
273 for (i = 0 ; i < fnSdigits ; i++) {
274 AliPHOSDigit * digit = (AliPHOSDigit *) fSDigits->At(i) ;
275 digit->SetIndexInList(i) ;
276 }
277
278 gAlice->TreeS()->Fill() ;
279 gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
280
281
282}
283//____________________________________________________________________________
a4e98857 284void AliPHOSv1::SDigits2Digits()
285{
286 // Adds noise to the summable digits and removes everething below thresholds
287 // Note, that sDigits should be SORTED in accordance with abs ID.
288 // OBSOLETE Replaced by Digitzer
b37750a6 289
290 gAlice->TreeS()->GetEvent(0) ;
291
292 // First calculate noise induced by the PIN diode of the PbWO crystals
293 Int_t iCurSDigit = 0 ;
294
295 //we assume, that there is al least one EMC digit...
296 if(fSDigits->GetEntries() == 0) {
21cd0c07 297 Warning("SDigits2Digits", "No SDigits !!! Do not produce Digits ") ;
b37750a6 298 return ;
299 }
300
301 Int_t idCurSDigit = ((AliPHOSDigit *)fSDigits->At(0))->GetId() ;
302
303 Int_t absID ;
fa7cce36 304 for(absID = 1; absID < GetGeometry()->GetNModules()*GetGeometry()->GetNPhi()*GetGeometry()->GetNZ(); absID++){
b37750a6 305 Float_t noise = gRandom->Gaus(0., fPinElectronicNoise) ;
306 if(absID < idCurSDigit ){
307 if(noise >fDigitThreshold ){
308 new((*fDigits)[fNdigits]) AliPHOSDigit( -1,absID,Digitize(noise) ) ;
309 fNdigits++ ;
310 }
311 }
312 else{ //add noise and may be remove the true hit
313 Float_t signal = noise + Calibrate(((AliPHOSDigit *)fSDigits->At(iCurSDigit))->GetAmp()) ;
314 if( signal >fDigitThreshold ){
315 AliPHOSDigit * digit = (AliPHOSDigit*) fSDigits->At(iCurSDigit) ;
316 new((*fDigits)[fNdigits]) AliPHOSDigit( *digit ) ;
317 ((AliPHOSDigit *)fDigits->At(fNdigits))->SetAmp(Digitize(signal));
318 fNdigits++ ;
319 }
320
321 if(iCurSDigit < fSDigits->GetEntries()-1){
322 iCurSDigit++ ;
323 idCurSDigit = ((AliPHOSDigit*)fSDigits->At(iCurSDigit))->GetId() ;
324 }
325 else
326 idCurSDigit = 10000000; //no real hits left
327 }
328
329 }
330
331 //remove PPSD/CPV digits below thresholds
332 Int_t idigit ;
333 for(idigit = iCurSDigit; idigit < fSDigits->GetEntries() ; idigit++){ //loop over CPV/PPSD digits
334
335 AliPHOSDigit * digit = (AliPHOSDigit *) fSDigits->At(idigit) ;
336 Float_t ene = Calibrate(digit->GetAmp()) ;
337
338 Int_t relid[4] ;
fa7cce36 339 GetGeometry()->AbsToRelNumbering(digit->GetId(), relid) ;
340 if ( relid[0] > GetGeometry()->GetNCPVModules() ){ //ppsd
b37750a6 341 if ( ( (relid[1] > 0) && (ene > fPpsdEnergyThreshold)) || //PPSD digit
342 ( (relid[1] < 0) && (ene > fCpvEnergyThreshold ) ) ) //CPV digit
343 new((*fDigits)[fNdigits]) AliPHOSDigit( *digit ) ;
344 fNdigits++ ;
345 }
346 }
347
348 fDigits->Compress() ;
349
350 fNdigits = fDigits->GetEntries() ;
351 fDigits->Expand(fNdigits) ;
352
353 Int_t i ;
354 for (i = 0 ; i < fNdigits ; i++) {
355 AliPHOSDigit * digit = (AliPHOSDigit *) fDigits->At(i) ;
356 digit->SetIndexInList(i) ;
357 }
358
359 gAlice->TreeD()->Fill() ;
360
361 gAlice->TreeD()->Write(0,TObject::kOverwrite) ;
362
363}
364
365//___________________________________________________________________________
366void AliPHOSv1::MakeBranch(Option_t* opt, char *file)
367{
a4e98857 368 // Called by AliRun
b37750a6 369
370 char *cH ;
371 // Create new branche in the current Root Tree in the digit Tree
372 AliDetector::MakeBranch(opt) ;
373
374
375 cH = strstr(opt,"S");
376 //Create a branch for SDigits
377 if( cH ){
378 char branchname[20];
379 sprintf(branchname,"%s",GetName());
380 if(fSDigits)
381 fSDigits->Clear();
382
383 fnSdigits = 0 ;
384 gAlice->MakeBranchInTree(gAlice->TreeS(),branchname,&fSDigits,fBufferSize,file);
385 }
386
387 cH = strstr(opt,"D");
388 //Create a branch for Digits
389 if( cH ){
390 char branchname[20];
391 sprintf(branchname,"%s",GetName());
392
393 if(fDigits)
394 fDigits->Clear();
395
396 gAlice->MakeBranchInTree(gAlice->TreeD(),branchname,&fDigits,fBufferSize,file);
397 }
398
399 cH = strstr(opt,"R");
400 //Create a branch for Reconstruction
401 if( cH ){
402 char branchname[20];
403
404 Int_t splitlevel = 0 ;
405
406 if(fEmcRecPoints)
407 fEmcRecPoints->Delete() ;
408
409 if ( fEmcRecPoints && gAlice->TreeR() ) {
410 sprintf(branchname,"%sEmcRP",GetName()) ;
411 gAlice->MakeBranchInTree(gAlice->TreeR(),branchname,"TObjArray",&fEmcRecPoints, fBufferSize, splitlevel,file);
412 }
413
414 if(fPpsdRecPoints)
415 fPpsdRecPoints->Delete() ;
416
417 if ( fPpsdRecPoints && gAlice->TreeR() ) {
418 sprintf(branchname,"%sPpsdRP",GetName()) ;
419 gAlice->MakeBranchInTree(gAlice->TreeR(),branchname,"TObjArray",&fPpsdRecPoints, fBufferSize, splitlevel,file);
420 }
421
422 if(fTrackSegments)
423 fTrackSegments->Clear() ;
424
425 if ( fTrackSegments && gAlice->TreeR() ) {
426 sprintf(branchname,"%sTS",GetName()) ;
427 gAlice->MakeBranchInTree(gAlice->TreeR(),branchname,&fTrackSegments,fBufferSize,file);
428 }
429
430 if(fRecParticles)
431 fRecParticles->Clear() ;
432
433 if ( fRecParticles && gAlice->TreeR() ) {
434 sprintf(branchname,"%sRP",GetName()) ;
435 gAlice->MakeBranchInTree(gAlice->TreeR(),branchname,&fRecParticles,fBufferSize,file);
436 }
437
438 }
439
440}
441
442//_____________________________________________________________________________
443void AliPHOSv1::Reconstruction(AliPHOSReconstructioner * Reconstructioner)
444{
445 // 1. Reinitializes the existing RecPoint, TrackSegment, and RecParticles Lists and
446 // 2. Creates TreeR with a branch for each list
447 // 3. Steers the reconstruction processes
448 // 4. Saves the 3 lists in TreeR
449 // 5. Write the Tree to File
450
451 fReconstructioner = Reconstructioner ;
452
453 // 1.
454
455 // gAlice->MakeTree("R") ;
456
457 MakeBranch("R") ;
458
459 // 3.
460
461 fReconstructioner->Make(fDigits, fEmcRecPoints, fPpsdRecPoints, fTrackSegments, fRecParticles);
462
463 printf("Reconstruction: %d %d %d %d\n",
464 fEmcRecPoints->GetEntries(),fPpsdRecPoints->GetEntries(),
465 fTrackSegments->GetEntries(),fRecParticles->GetEntries());
466
467 // 4. Expand or Shrink the arrays to the proper size
468
469 Int_t size ;
470
471 size = fEmcRecPoints->GetEntries() ;
472 fEmcRecPoints->Expand(size) ;
473
474 size = fPpsdRecPoints->GetEntries() ;
475 fPpsdRecPoints->Expand(size) ;
476
477 size = fTrackSegments->GetEntries() ;
478 fTrackSegments->Expand(size) ;
479
480 size = fRecParticles->GetEntries() ;
481 fRecParticles->Expand(size) ;
482
483 gAlice->TreeR()->Fill() ;
484 // 5.
485
486 gAlice->TreeR()->Write(0,TObject::kOverwrite) ;
487
488 // Deleting reconstructed objects
489 ResetReconstruction();
490
491}
492
493//____________________________________________________________________________
494void AliPHOSv1::ResetReconstruction()
495{
496 // Deleting reconstructed objects
497
498 if ( fEmcRecPoints ) fEmcRecPoints ->Delete();
499 if ( fPpsdRecPoints ) fPpsdRecPoints->Delete();
500 if ( fTrackSegments ) fTrackSegments->Delete();
501 if ( fRecParticles ) fRecParticles ->Delete();
502
503}
504
505//____________________________________________________________________________
506
507void AliPHOSv1::StepManager(void)
508{
509 // Accumulates hits as long as the track stays in a single crystal or PPSD gas Cell
510
511 Int_t relid[4] ; // (box, layer, row, column) indices
512 Int_t absid ; // absolute cell ID number
513 Float_t xyze[4]={0,0,0,0} ; // position wrt MRS and energy deposited
514 TLorentzVector pos ; // Lorentz vector of the track current position
515 TLorentzVector pmom ; //momentum of the particle initiated hit
516 Float_t xyd[3]={0,0,0} ; //local posiiton of the entering
517 Bool_t entered = kFALSE ;
518 Int_t copy ;
519
642f15cf 520 Int_t tracknumber = gAlice->GetCurrentTrackNumber() ;
521 Int_t primary = gAlice->GetPrimary( gAlice->GetCurrentTrackNumber() );
fa7cce36 522 TString name = GetGeometry()->GetName() ;
b37750a6 523 Int_t trackpid = 0 ;
524
525 if( gMC->IsTrackEntering() ){ // create hit with position and momentum of new particle,
526 // but may be without energy deposition
527
528 // Current position of the hit in the local ref. system
529 gMC -> TrackPosition(pos);
530 Float_t xyzm[3], xyzd[3] ;
531 Int_t i;
532 for (i=0; i<3; i++) xyzm[i] = pos[i];
533 gMC -> Gmtod (xyzm, xyzd, 1); // transform coordinate from master to daughter system
534 xyd[0] = xyzd[0];
535 xyd[1] =-xyzd[1];
536 xyd[2] =-xyzd[2];
537
538
539 // Current momentum of the hit's track in the local ref. system
540 gMC -> TrackMomentum(pmom);
541 Float_t pm[3], pd[3];
542 for (i=0; i<3; i++) pm[i] = pmom[i];
543 gMC -> Gmtod (pm, pd, 2); // transform 3-momentum from master to daughter system
544 pmom[0] = pd[0];
545 pmom[1] =-pd[1];
546 pmom[2] =-pd[2];
547
548 trackpid = gMC->TrackPid();
549 entered = kTRUE ; // Mark to create hit even withou energy deposition
550
551 }
552
553
554 if ( name == "GPS2" || name == "MIXT" ) { // ======> CPV is a GPS' PPSD
555
dc999bc0 556 if( gMC->CurrentVolID(copy) == gMC->VolId("PPCE") ) // We are inside a gas cell
b37750a6 557 {
558 gMC->TrackPosition(pos) ;
559 xyze[0] = pos[0] ;
560 xyze[1] = pos[1] ;
561 xyze[2] = pos[2] ;
562 xyze[3] = gMC->Edep() ;
563
564 if ( (xyze[3] != 0) || entered ) { // there is deposited energy or new particle entering PPSD
565 gMC->CurrentVolOffID(5, relid[0]) ; // get the PHOS Module number
566 if ( name == "MIXT" && strcmp(gMC->CurrentVolOffName(5),"PHO1") == 0 ){
fa7cce36 567 relid[0] += GetGeometry()->GetNModules() - GetGeometry()->GetNPPSDModules();
b37750a6 568 }
569 gMC->CurrentVolOffID(3, relid[1]) ; // get the Micromegas Module number
fa7cce36 570 // 1-> GetGeometry()->GetNumberOfModulesPhi() * GetGeometry()->GetNumberOfModulesZ() upper
571 // > GetGeometry()->GetNumberOfModulesPhi() * GetGeometry()->GetNumberOfModulesZ() lower
b37750a6 572 gMC->CurrentVolOffID(1, relid[2]) ; // get the row number of the cell
573 gMC->CurrentVolID(relid[3]) ; // get the column number
574
575 // get the absolute Id number
576
fa7cce36 577 GetGeometry()->RelToAbsNumbering(relid, absid) ;
b37750a6 578
579 // add current hit to the hit list
580 AddHit(fIshunt, primary, tracknumber, absid, xyze, trackpid, pmom, xyd);
581
582
583 } // there is deposited energy
584 } // We are inside the gas of the CPV
585 } // GPS2 configuration
586
587 if ( name == "IHEP" || name == "MIXT" ) { // ======> CPV is a IHEP's one
588
589 // Yuri Kharlov, 28 September 2000
590
2da2bac5 591 if( gMC->CurrentVolID(copy) == gMC->VolId("PCPQ") &&
b37750a6 592 entered &&
593 gMC->TrackCharge() != 0) {
594
595 // Digitize the current CPV hit:
596
597 // 1. find pad response and
598
599 Int_t moduleNumber;
600 gMC->CurrentVolOffID(3,moduleNumber);
601 moduleNumber--;
602
603
604 TClonesArray *cpvDigits = new TClonesArray("AliPHOSCPVDigit",0); // array of digits for current hit
605 CPVDigitize(pmom,xyd,moduleNumber,cpvDigits);
606
607 Float_t xmean = 0;
608 Float_t zmean = 0;
609 Float_t qsum = 0;
610 Int_t idigit,ndigits;
611
612 // 2. go through the current digit list and sum digits in pads
613
614 ndigits = cpvDigits->GetEntriesFast();
615 for (idigit=0; idigit<ndigits-1; idigit++) {
616 AliPHOSCPVDigit *cpvDigit1 = (AliPHOSCPVDigit*) cpvDigits->UncheckedAt(idigit);
617 Float_t x1 = cpvDigit1->GetXpad() ;
618 Float_t z1 = cpvDigit1->GetYpad() ;
619 for (Int_t jdigit=idigit+1; jdigit<ndigits; jdigit++) {
620 AliPHOSCPVDigit *cpvDigit2 = (AliPHOSCPVDigit*) cpvDigits->UncheckedAt(jdigit);
621 Float_t x2 = cpvDigit2->GetXpad() ;
622 Float_t z2 = cpvDigit2->GetYpad() ;
623 if (x1==x2 && z1==z2) {
624 Float_t qsum = cpvDigit1->GetQpad() + cpvDigit2->GetQpad() ;
625 cpvDigit2->SetQpad(qsum) ;
626 cpvDigits->RemoveAt(idigit) ;
627 }
628 }
629 }
630 cpvDigits->Compress() ;
631
632 // 3. add digits to temporary hit list fTmpHits
633
634 ndigits = cpvDigits->GetEntriesFast();
635 for (idigit=0; idigit<ndigits; idigit++) {
636 AliPHOSCPVDigit *cpvDigit = (AliPHOSCPVDigit*) cpvDigits->UncheckedAt(idigit);
637 relid[0] = moduleNumber + 1 ; // CPV (or PHOS) module number
638 relid[1] =-1 ; // means CPV
639 relid[2] = cpvDigit->GetXpad() ; // column number of a pad
640 relid[3] = cpvDigit->GetYpad() ; // row number of a pad
641
642 // get the absolute Id number
fa7cce36 643 GetGeometry()->RelToAbsNumbering(relid, absid) ;
b37750a6 644
645 // add current digit to the temporary hit list
646 xyze[0] = 0. ;
647 xyze[1] = 0. ;
648 xyze[2] = 0. ;
649 xyze[3] = cpvDigit->GetQpad() ; // amplitude in a pad
650 primary = -1; // No need in primary for CPV
651 AddHit(fIshunt, primary, tracknumber, absid, xyze, trackpid, pmom, xyd);
652
653 if (cpvDigit->GetQpad() > 0.02) {
654 xmean += cpvDigit->GetQpad() * (cpvDigit->GetXpad() + 0.5);
655 zmean += cpvDigit->GetQpad() * (cpvDigit->GetYpad() + 0.5);
656 qsum += cpvDigit->GetQpad();
657 }
658 }
659 delete cpvDigits;
660 }
661 } // end of IHEP configuration
662
663
664 if(gMC->CurrentVolID(copy) == gMC->VolId("PXTL") ) { // We are inside a PBWO crystal
665 gMC->TrackPosition(pos) ;
666 xyze[0] = pos[0] ;
667 xyze[1] = pos[1] ;
668 xyze[2] = pos[2] ;
669 xyze[3] = gMC->Edep() ;
670
671
672 if ( (xyze[3] != 0) || entered ) { // Track is inside the crystal and deposits some energy or just entered
673
674 gMC->CurrentVolOffID(10, relid[0]) ; // get the PHOS module number ;
675
676 if ( name == "MIXT" && strcmp(gMC->CurrentVolOffName(10),"PHO1") == 0 )
fa7cce36 677 relid[0] += GetGeometry()->GetNModules() - GetGeometry()->GetNPPSDModules();
b37750a6 678
679 relid[1] = 0 ; // means PBW04
680 gMC->CurrentVolOffID(4, relid[2]) ; // get the row number inside the module
681 gMC->CurrentVolOffID(3, relid[3]) ; // get the cell number inside the module
682
683 // get the absolute Id number
fa7cce36 684 GetGeometry()->RelToAbsNumbering(relid, absid) ;
b37750a6 685
686 // add current hit to the hit list
687 AddHit(fIshunt, primary,tracknumber, absid, xyze, trackpid,pmom, xyd);
688
689
690 } // there is deposited energy
691 } // we are inside a PHOS Xtal
692
693
694}
695
696//____________________________________________________________________________
697void AliPHOSv1::CPVDigitize (TLorentzVector p, Float_t *zxhit, Int_t moduleNumber, TClonesArray *cpvDigits)
698{
699 // ------------------------------------------------------------------------
700 // Digitize one CPV hit:
701 // On input take exact 4-momentum p and position zxhit of the hit,
702 // find the pad response around this hit and
703 // put the amplitudes in the pads into array digits
704 //
705 // Author: Yuri Kharlov (after Serguei Sadovsky)
706 // 2 October 2000
707 // ------------------------------------------------------------------------
708
fa7cce36 709 const Float_t kCelWr = GetGeometry()->GetPadSizePhi()/2; // Distance between wires (2 wires above 1 pad)
b37750a6 710 const Float_t kDetR = 0.1; // Relative energy fluctuation in track for 100 e-
711 const Float_t kdEdx = 4.0; // Average energy loss in CPV;
712 const Int_t kNgamz = 5; // Ionization size in Z
713 const Int_t kNgamx = 9; // Ionization size in Phi
714 const Float_t kNoise = 0.03; // charge noise in one pad
715
716 Float_t rnor1,rnor2;
717
718 // Just a reminder on axes notation in the CPV module:
719 // axis Z goes along the beam
720 // axis X goes across the beam in the module plane
721 // axis Y is a normal to the module plane showing from the IP
722
723 Float_t hitX = zxhit[0];
724 Float_t hitZ =-zxhit[1];
725 Float_t pX = p.Px();
726 Float_t pZ =-p.Pz();
727 Float_t pNorm = p.Py();
728 Float_t eloss = kdEdx;
729
fa7cce36 730 Float_t dZY = pZ/pNorm * GetGeometry()->GetCPVGasThickness();
731 Float_t dXY = pX/pNorm * GetGeometry()->GetCPVGasThickness();
b37750a6 732 gRandom->Rannor(rnor1,rnor2);
733 eloss *= (1 + kDetR*rnor1) *
fa7cce36 734 TMath::Sqrt((1 + ( pow(dZY,2) + pow(dXY,2) ) / pow(GetGeometry()->GetCPVGasThickness(),2)));
735 Float_t zhit1 = hitZ + GetGeometry()->GetCPVActiveSize(1)/2 - dZY/2;
736 Float_t xhit1 = hitX + GetGeometry()->GetCPVActiveSize(0)/2 - dXY/2;
b37750a6 737 Float_t zhit2 = zhit1 + dZY;
738 Float_t xhit2 = xhit1 + dXY;
739
740 Int_t iwht1 = (Int_t) (xhit1 / kCelWr); // wire (x) coordinate "in"
741 Int_t iwht2 = (Int_t) (xhit2 / kCelWr); // wire (x) coordinate "out"
742
743 Int_t nIter;
744 Float_t zxe[3][5];
745 if (iwht1==iwht2) { // incline 1-wire hit
746 nIter = 2;
747 zxe[0][0] = (zhit1 + zhit2 - dZY*0.57735) / 2;
748 zxe[1][0] = (iwht1 + 0.5) * kCelWr;
749 zxe[2][0] = eloss/2;
750 zxe[0][1] = (zhit1 + zhit2 + dZY*0.57735) / 2;
751 zxe[1][1] = (iwht1 + 0.5) * kCelWr;
752 zxe[2][1] = eloss/2;
753 }
754 else if (TMath::Abs(iwht1-iwht2) != 1) { // incline 3-wire hit
755 nIter = 3;
756 Int_t iwht3 = (iwht1 + iwht2) / 2;
757 Float_t xwht1 = (iwht1 + 0.5) * kCelWr; // wire 1
758 Float_t xwht2 = (iwht2 + 0.5) * kCelWr; // wire 2
759 Float_t xwht3 = (iwht3 + 0.5) * kCelWr; // wire 3
760 Float_t xwr13 = (xwht1 + xwht3) / 2; // center 13
761 Float_t xwr23 = (xwht2 + xwht3) / 2; // center 23
762 Float_t dxw1 = xhit1 - xwr13;
763 Float_t dxw2 = xhit2 - xwr23;
764 Float_t egm1 = TMath::Abs(dxw1) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + kCelWr );
765 Float_t egm2 = TMath::Abs(dxw2) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + kCelWr );
766 Float_t egm3 = kCelWr / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + kCelWr );
767 zxe[0][0] = (dXY*(xwr13-xwht1)/dXY + zhit1 + zhit1) / 2;
768 zxe[1][0] = xwht1;
769 zxe[2][0] = eloss * egm1;
770 zxe[0][1] = (dXY*(xwr23-xwht1)/dXY + zhit1 + zhit2) / 2;
771 zxe[1][1] = xwht2;
772 zxe[2][1] = eloss * egm2;
773 zxe[0][2] = dXY*(xwht3-xwht1)/dXY + zhit1;
774 zxe[1][2] = xwht3;
775 zxe[2][2] = eloss * egm3;
776 }
777 else { // incline 2-wire hit
778 nIter = 2;
779 Float_t xwht1 = (iwht1 + 0.5) * kCelWr;
780 Float_t xwht2 = (iwht2 + 0.5) * kCelWr;
781 Float_t xwr12 = (xwht1 + xwht2) / 2;
782 Float_t dxw1 = xhit1 - xwr12;
783 Float_t dxw2 = xhit2 - xwr12;
784 Float_t egm1 = TMath::Abs(dxw1) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) );
785 Float_t egm2 = TMath::Abs(dxw2) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) );
786 zxe[0][0] = (zhit1 + zhit2 - dZY*egm1) / 2;
787 zxe[1][0] = xwht1;
788 zxe[2][0] = eloss * egm1;
789 zxe[0][1] = (zhit1 + zhit2 + dZY*egm2) / 2;
790 zxe[1][1] = xwht2;
791 zxe[2][1] = eloss * egm2;
792 }
793
794 // Finite size of ionization region
795
fa7cce36 796 Int_t nCellZ = GetGeometry()->GetNumberOfCPVPadsZ();
797 Int_t nCellX = GetGeometry()->GetNumberOfCPVPadsPhi();
b37750a6 798 Int_t nz3 = (kNgamz+1)/2;
799 Int_t nx3 = (kNgamx+1)/2;
800 cpvDigits->Expand(nIter*kNgamx*kNgamz);
801 TClonesArray &ldigits = *(TClonesArray *)cpvDigits;
802
803 for (Int_t iter=0; iter<nIter; iter++) {
804
805 Float_t zhit = zxe[0][iter];
806 Float_t xhit = zxe[1][iter];
807 Float_t qhit = zxe[2][iter];
fa7cce36 808 Float_t zcell = zhit / GetGeometry()->GetPadSizeZ();
809 Float_t xcell = xhit / GetGeometry()->GetPadSizePhi();
b37750a6 810 if ( zcell<=0 || xcell<=0 ||
811 zcell>=nCellZ || xcell>=nCellX) return;
812 Int_t izcell = (Int_t) zcell;
813 Int_t ixcell = (Int_t) xcell;
814 Float_t zc = zcell - izcell - 0.5;
815 Float_t xc = xcell - ixcell - 0.5;
816 for (Int_t iz=1; iz<=kNgamz; iz++) {
817 Int_t kzg = izcell + iz - nz3;
818 if (kzg<=0 || kzg>nCellZ) continue;
819 Float_t zg = (Float_t)(iz-nz3) - zc;
820 for (Int_t ix=1; ix<=kNgamx; ix++) {
821 Int_t kxg = ixcell + ix - nx3;
822 if (kxg<=0 || kxg>nCellX) continue;
823 Float_t xg = (Float_t)(ix-nx3) - xc;
824
825 // Now calculate pad response
826 Float_t qpad = CPVPadResponseFunction(qhit,zg,xg);
827 qpad += kNoise*rnor2;
828 if (qpad<0) continue;
829
830 // Fill the array with pad response ID and amplitude
831 new(ldigits[cpvDigits->GetEntriesFast()]) AliPHOSCPVDigit(kxg,kzg,qpad);
832 }
833 }
834 }
835}
836
837//____________________________________________________________________________
838Float_t AliPHOSv1::CPVPadResponseFunction(Float_t qhit, Float_t zhit, Float_t xhit) {
839 // ------------------------------------------------------------------------
840 // Calculate the amplitude in one CPV pad using the
841 // cumulative pad response function
842 // Author: Yuri Kharlov (after Serguei Sadovski)
843 // 3 October 2000
844 // ------------------------------------------------------------------------
845
fa7cce36 846 Double_t dz = GetGeometry()->GetPadSizeZ() / 2;
847 Double_t dx = GetGeometry()->GetPadSizePhi() / 2;
848 Double_t z = zhit * GetGeometry()->GetPadSizeZ();
849 Double_t x = xhit * GetGeometry()->GetPadSizePhi();
b37750a6 850 Double_t amplitude = qhit *
851 (CPVCumulPadResponse(z+dz,x+dx) - CPVCumulPadResponse(z+dz,x-dx) -
852 CPVCumulPadResponse(z-dz,x+dx) + CPVCumulPadResponse(z-dz,x-dx));
853 return (Float_t)amplitude;
854}
855
856//____________________________________________________________________________
857Double_t AliPHOSv1::CPVCumulPadResponse(Double_t x, Double_t y) {
858 // ------------------------------------------------------------------------
859 // Cumulative pad response function
860 // It includes several terms from the CF decomposition in electrostatics
861 // Note: this cumulative function is wrong since omits some terms
862 // but the cell amplitude obtained with it is correct because
863 // these omitting terms cancel
864 // Author: Yuri Kharlov (after Serguei Sadovski)
865 // 3 October 2000
866 // ------------------------------------------------------------------------
867
868 const Double_t kA=1.0;
869 const Double_t kB=0.7;
870
871 Double_t r2 = x*x + y*y;
872 Double_t xy = x*y;
873 Double_t cumulPRF = 0;
874 for (Int_t i=0; i<=4; i++) {
875 Double_t b1 = (2*i + 1) * kB;
876 cumulPRF += TMath::Power(-1,i) * TMath::ATan( xy / (b1*TMath::Sqrt(b1*b1 + r2)) );
877 }
878 cumulPRF *= kA/(2*TMath::Pi());
879 return cumulPRF;
880}
881