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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 | |
58 | ClassImp(AliPHOSv1) | |
59 | ||
60 | //____________________________________________________________________________ | |
61 | AliPHOSv1::AliPHOSv1(): | |
62 | AliPHOSv0() | |
63 | { | |
64 | // ctor | |
65 | ||
66 | fReconstructioner = 0; | |
67 | fTrackSegmentMaker = 0; | |
68 | ||
69 | } | |
70 | ||
71 | //____________________________________________________________________________ | |
72 | AliPHOSv1::AliPHOSv1(const char *name, const char *title): | |
73 | AliPHOSv0(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 | //____________________________________________________________________________ | |
109 | AliPHOSv1::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 | //____________________________________________________________________________ | |
141 | AliPHOSv1::~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 | //____________________________________________________________________________ | |
184 | void 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 | 214 | void 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 | 284 | void 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 | //___________________________________________________________________________ | |
366 | void 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 | //_____________________________________________________________________________ | |
443 | void 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 | //____________________________________________________________________________ | |
494 | void 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 | ||
507 | void 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 | ||
520 | Int_t tracknumber = gAlice->CurrentTrack() ; | |
521 | Int_t primary = gAlice->GetPrimary( gAlice->CurrentTrack() ); | |
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 | //____________________________________________________________________________ | |
697 | void 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 | //____________________________________________________________________________ | |
838 | Float_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 | //____________________________________________________________________________ | |
857 | Double_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 |