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