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