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a9e2aefa 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
d7c4fbc4 3 * SigmaEffect_thetadegrees *
a9e2aefa 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 *
2c799aa2 12 * about the suitability of this software for any purpeateose. It is *
a9e2aefa 13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15
88cb7938 16/* $Id$ */
a9e2aefa 17
18/////////////////////////////////////////////////////////
acc838fd 19// Manager and hits classes for set:MUON version 1 //
a9e2aefa 20/////////////////////////////////////////////////////////
acc838fd 21
abaf7c9d 22#include <TRandom.h>
23#include <TF1.h>
116cbefd 24#include <TClonesArray.h>
acc838fd 25#include <TRandom.h>
88cb7938 26#include <TVirtualMC.h>
333f7cda 27#include <TGeoMatrix.h>
a9e2aefa 28
30178c30 29#include "AliMUONv1.h"
a9e2aefa 30#include "AliConst.h"
31#include "AliMUONChamber.h"
88cb7938 32#include "AliMUONConstants.h"
a713db22 33#include "AliMUONFactoryV2.h"
a9e2aefa 34#include "AliMUONHit.h"
8c449e83 35#include "AliMUONTriggerCircuit.h"
d4bb94a1 36#include "AliMUONGeometryBuilder.h"
e118b27e 37#include "AliMUONGeometryModule.h"
333f7cda 38#include "AliMUONGeometrySVMap.h"
e118b27e 39#include "AliMUONGeometryDetElement.h"
88cb7938 40#include "AliMagF.h"
41#include "AliRun.h"
5d12ce38 42#include "AliMC.h"
8c343c7c 43#include "AliLog.h"
a9e2aefa 44
45ClassImp(AliMUONv1)
46
47//___________________________________________
30178c30 48AliMUONv1::AliMUONv1()
49 : AliMUON(),
d4bb94a1 50 fStepManagerVersionOld(kFALSE),
d59b2ec3 51 fStepManagerVersionDE(kFALSE),
d4bb94a1 52 fAngleEffect(kTRUE),
53 fStepMaxInActiveGas(0.6),
54 fStepSum(0x0),
55 fDestepSum(0x0),
56 fTrackMomentum(),
57 fTrackPosition(),
58 fElossRatio(0x0),
59 fAngleEffect10(0x0),
60 fAngleEffectNorma(0x0)
a9e2aefa 61{
d4bb94a1 62// Default constructor
1391e633 63}
d4bb94a1 64
a9e2aefa 65//___________________________________________
66AliMUONv1::AliMUONv1(const char *name, const char *title)
d4bb94a1 67 : AliMUON(name,title),
68 fStepManagerVersionOld(kFALSE),
d59b2ec3 69 fStepManagerVersionDE(kFALSE),
d4bb94a1 70 fAngleEffect(kTRUE),
71 fStepMaxInActiveGas(0.6),
72 fStepSum(0x0),
73 fDestepSum(0x0),
74 fTrackMomentum(),
75 fTrackPosition(),
76 fElossRatio(0x0),
77 fAngleEffect10(0x0),
78 fAngleEffectNorma(0x0)
a9e2aefa 79{
d4bb94a1 80// Standard onstructor
81
ba030c0e 82 // By default include all stations
c33d9661 83
1391e633 84 fStepSum = new Float_t [AliMUONConstants::NCh()];
85 fDestepSum = new Float_t [AliMUONConstants::NCh()];
86 for (Int_t i=0; i<AliMUONConstants::NCh(); i++) {
87 fStepSum[i] =0.0;
88 fDestepSum[i]=0.0;
89 }
90 // Ratio of particle mean eloss with respect MIP's Khalil Boudjemline, sep 2003, PhD.Thesis and Particle Data Book
91 fElossRatio = new TF1("ElossRatio","[0]+[1]*x+[2]*x*x+[3]*x*x*x+[4]*x*x*x*x",0.5,5.);
92 fElossRatio->SetParameter(0,1.02138);
93 fElossRatio->SetParameter(1,-9.54149e-02);
94 fElossRatio->SetParameter(2,+7.83433e-02);
95 fElossRatio->SetParameter(3,-9.98208e-03);
96 fElossRatio->SetParameter(4,+3.83279e-04);
97
98 // Angle effect in tracking chambers at theta =10 degres as a function of ElossRatio (Khalil BOUDJEMLINE sep 2003 Ph.D Thesis) (in micrometers)
99 fAngleEffect10 = new TF1("AngleEffect10","[0]+[1]*x+[2]*x*x",0.5,3.0);
100 fAngleEffect10->SetParameter(0, 1.90691e+02);
101 fAngleEffect10->SetParameter(1,-6.62258e+01);
102 fAngleEffect10->SetParameter(2,+1.28247e+01);
103 // Angle effect: Normalisation form theta=10 degres to theta between 0 and 10 (Khalil BOUDJEMLINE sep 2003 Ph.D Thesis)
104 // Angle with respect to the wires assuming that chambers are perpendicular to the z axis.
105 fAngleEffectNorma = new TF1("AngleEffectNorma","[0]+[1]*x+[2]*x*x+[3]*x*x*x",0.0,10.0);
106 fAngleEffectNorma->SetParameter(0,4.148);
107 fAngleEffectNorma->SetParameter(1,-6.809e-01);
108 fAngleEffectNorma->SetParameter(2,5.151e-02);
109 fAngleEffectNorma->SetParameter(3,-1.490e-03);
a9e2aefa 110}
111
fb1bf5c0 112//_____________________________________________________________________________
113AliMUONv1::AliMUONv1(const AliMUONv1& right)
114 : AliMUON(right)
115{
116 // copy constructor (not implemented)
117
8c343c7c 118 AliFatal("Copy constructor not provided.");
fb1bf5c0 119}
120
a9e2aefa 121//___________________________________________
acc838fd 122AliMUONv1::~AliMUONv1()
a9e2aefa 123{
acc838fd 124// Destructor
a9e2aefa 125
d4bb94a1 126 delete [] fStepSum;
127 delete [] fDestepSum;
128 delete fElossRatio;
129 delete fAngleEffect10;
130 delete fAngleEffectNorma;
acc838fd 131}
b17c0c87 132
fb1bf5c0 133//_____________________________________________________________________________
134AliMUONv1& AliMUONv1::operator=(const AliMUONv1& right)
135{
136 // assignement operator (not implemented)
137
138 // check assignement to self
139 if (this == &right) return *this;
140
8c343c7c 141 AliFatal("Assignement operator not provided.");
fb1bf5c0 142
143 return *this;
144}
145
acc838fd 146//__________________________________________________
147void AliMUONv1::CreateGeometry()
148{
b17c0c87 149//
d4bb94a1 150// Construct geometry using geometry builder
a9e2aefa 151//
a9e2aefa 152
d4bb94a1 153 fGeometryBuilder->CreateGeometry();
acc838fd 154}
a9e2aefa 155
acc838fd 156//________________________________________________________________
a9e2aefa 157void AliMUONv1::CreateMaterials()
158{
a9e2aefa 159//
d4bb94a1 160// Construct materials using geometry builder
161//
acc838fd 162
d4bb94a1 163 fGeometryBuilder->CreateMaterials();
a9e2aefa 164}
165
acc838fd 166//___________________________________________
a9e2aefa 167void AliMUONv1::Init()
a713db22 168{
8c343c7c 169 AliDebug(1,"Start Init for version 1 - CPC chamber type");
e17592e9 170 Int_t i;
a713db22 171
172
173 //
d4bb94a1 174 // Initialize geometry
a9e2aefa 175 //
d4bb94a1 176 fGeometryBuilder->InitGeometry();
a713db22 177 AliDebug(1,"Finished Init for version 1 - CPC chamber type");
178
179 AliMUONFactory* factory = 0x0;
a9e2aefa 180
a713db22 181 if (fSegmentationType == 1) {
182 factory = new AliMUONFactory();
183 printf("\n Old Segmentation \n");
a9e2aefa 184 }
a713db22 185
186 if (fSegmentationType == 2) {
187 factory = new AliMUONFactoryV2();
188 printf("\n New Segmentation \n");
189 }
190
191 factory->Build(this, "default");
192
193 //
194 // Initialize segmentation
195 //
196 if (!fSegmentationType) {
197 AliFatal("No Segmentation Type defined.");
198 return;
199 }
200
201 if (fSegmentationType == 1) {
202 for (i=0; i<AliMUONConstants::NCh(); i++)
203 ( (AliMUONChamber*) (*fChambers)[i])->Init();
204 }
205
206 if (fSegmentationType == 2) {
207 for (i=0; i<AliMUONConstants::NCh(); i++)
208 ( (AliMUONChamber*) (*fChambers)[i])->Init(fSegmentationType);// new segmentation
209 }
210
211 if (fSegmentationType == 1) {
212 //cp
213 AliDebug(1,"Start Init for Trigger Circuits");
214 for (i=0; i<AliMUONConstants::NTriggerCircuit(); i++)
215 ( (AliMUONTriggerCircuit*) (*fTriggerCircuits)[i])->Init(i);
216 AliDebug(1,"Finished Init for Trigger Circuits");
217 }
218
219
220
a9e2aefa 221}
1391e633 222
d4bb94a1 223//__________________________________________________________________
224Int_t AliMUONv1::GetChamberId(Int_t volId) const
225{
226// Check if the volume with specified volId is a sensitive volume (gas)
227// of some chamber and returns the chamber number;
228// if not sensitive volume - return 0.
229// ---
230
231/*
232 for (Int_t i = 1; i <= AliMUONConstants::NCh(); i++)
233 if (volId==((AliMUONChamber*)(*fChambers)[i-1])->GetGid()) return i;
234*/
235 for (Int_t i = 1; i <= AliMUONConstants::NCh(); i++)
236 if ( ((AliMUONChamber*)(*fChambers)[i-1])->IsSensId(volId) ) return i;
237
238 return 0;
239}
333f7cda 240
241//_______________________________________________________________________________
242TString AliMUONv1::CurrentVolumePath() const
243{
244// Returns current volume path
245// (Could be removed when this function is available via gMC)
246// ---
247
248 TString path = "";
249 TString name;
250 Int_t copyNo;
251 Int_t imother = 0;
252 do {
253 name = gMC->CurrentVolOffName(imother);
254 gMC->CurrentVolOffID(imother++, copyNo);
255 TString add = "/";
256 add += name;
257 add += ".";
258 add += copyNo;
259 path.Insert(0,add);
260 }
261 while ( name != TString("ALIC") );
262
263 return path;
264}
265
1391e633 266//_______________________________________________________________________________
c33d9661 267void AliMUONv1::StepManager()
268{
d7c4fbc4 269 // Stepmanager for the chambers
d59b2ec3 270 // TBR
271
272 if (fStepManagerVersionDE) {
273 StepManager2();
274 return;
275 }
d7c4fbc4 276
1391e633 277 if (fStepManagerVersionOld) {
c33d9661 278 StepManagerOld();
279 return;
280 }
c33d9661 281
282 // Only charged tracks
d59b2ec3 283 if( !(gMC->TrackCharge()) ) return;
1391e633 284 // Only charged tracks
285
c33d9661 286 // Only gas gap inside chamber
287 // Tag chambers and record hits when track enters
acc838fd 288 static Int_t idvol=-1;
1391e633 289 Int_t iChamber=0;
290 Int_t id=0;
291 Int_t copy;
292 const Float_t kBig = 1.e10;
293
acc838fd 294
295 //
296 // Only gas gap inside chamber
297 // Tag chambers and record hits when track enters
c33d9661 298 id=gMC->CurrentVolID(copy);
acc838fd 299 iChamber = GetChamberId(id);
300 idvol = iChamber -1;
301
302 if (idvol == -1) return;
abaf7c9d 303
967a2a25 304 // Filling TrackRefs file for MUON. Our Track references are the active volume of the chambers
305 if ( (gMC->IsTrackEntering() || gMC->IsTrackExiting() ) )
306 AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber());
307
1391e633 308 if( gMC->IsTrackEntering() ) {
309 Float_t theta = fTrackMomentum.Theta();
4ac9d21e 310 if ((TMath::Pi()-theta)*kRaddeg>=15.) gMC->SetMaxStep(fStepMaxInActiveGas); // We use Pi-theta because z is negative
311 }
abaf7c9d 312
1391e633 313// if (GetDebug()) {
314// Float_t z = ( (AliMUONChamber*)(*fChambers)[idvol])->Z() ;
315// Info("StepManager Step","Active volume found %d chamber %d Z chamber is %f ",idvol,iChamber, z);
316// }
317 // Particule id and mass,
318 Int_t ipart = gMC->TrackPid();
319 Float_t mass = gMC->TrackMass();
320
321 fDestepSum[idvol]+=gMC->Edep();
322 // Get current particle id (ipart), track position (pos) and momentum (mom)
323 if ( fStepSum[idvol]==0.0 ) gMC->TrackMomentum(fTrackMomentum);
324 fStepSum[idvol]+=gMC->TrackStep();
abaf7c9d 325
1391e633 326// if (GetDebug()) {
327// Info("StepManager Step","iChamber %d, Particle %d, theta %f phi %f mass %f StepSum %f eloss %g",
333f7cda 328// iChamber,ipart, fTrackMomentum.Theta()*kRaddeg, fTrackMomentum.Phi()*kRaddeg, mass, fStepSum[idvol], gMC->Edep());// Info("StepManager Step","Track Momentum %f %f %f", fTrackMomentum.X(), fTrackMomentum.Y(), fTrackMomentum.Z()) ;
1391e633 329// gMC->TrackPosition(fTrackPosition);
330// Info("StepManager Step","Track Position %f %f %f",fTrackPosition.X(),fTrackPosition.Y(),fTrackPosition.Z()) ;
d08aff2d 331// }
1391e633 332
333 // Track left chamber or StepSum larger than fStepMaxInActiveGas
334 if ( gMC->IsTrackExiting() ||
335 gMC->IsTrackStop() ||
336 gMC->IsTrackDisappeared()||
337 (fStepSum[idvol]>fStepMaxInActiveGas) ) {
338
339 if ( gMC->IsTrackExiting() ||
acc838fd 340 gMC->IsTrackStop() ||
341 gMC->IsTrackDisappeared() ) gMC->SetMaxStep(kBig);
1391e633 342
343 gMC->TrackPosition(fTrackPosition);
344 Float_t theta = fTrackMomentum.Theta();
345 Float_t phi = fTrackMomentum.Phi();
346
d7c4fbc4 347 TLorentzVector backToWire( fStepSum[idvol]/2.*sin(theta)*cos(phi),
acc838fd 348 fStepSum[idvol]/2.*sin(theta)*sin(phi),
349 fStepSum[idvol]/2.*cos(theta),0.0 );
1391e633 350 // if (GetDebug())
351 // Info("StepManager Exit","Track Position %f %f %f",fTrackPosition.X(),fTrackPosition.Y(),fTrackPosition.Z()) ;
352 // if (GetDebug())
d7c4fbc4 353 // Info("StepManager Exit ","Track backToWire %f %f %f",backToWire.X(),backToWire.Y(),backToWire.Z()) ;
354 fTrackPosition-=backToWire;
1391e633 355
356 //-------------- Angle effect
357 // Ratio between energy loss of particle and Mip as a function of BetaGamma of particle (Energy/Mass)
358
30178c30 359 Float_t betaxGamma = fTrackMomentum.P()/mass;// pc/mc2
d7c4fbc4 360 Float_t sigmaEffect10degrees;
361 Float_t sigmaEffectThetadegrees;
362 Float_t eLossParticleELossMip;
363 Float_t yAngleEffect=0.;
364 Float_t thetawires = TMath::Abs( TMath::ASin( TMath::Sin(TMath::Pi()-theta) * TMath::Sin(phi) ) );// We use Pi-theta because z is negative
365
374ebd7d 366
367 if (fAngleEffect){
30178c30 368 if ( (betaxGamma >3.2) && (thetawires*kRaddeg<=15.) ) {
369 betaxGamma=TMath::Log(betaxGamma);
370 eLossParticleELossMip = fElossRatio->Eval(betaxGamma);
1391e633 371 // 10 degrees is a reference for a model (arbitrary)
d7c4fbc4 372 sigmaEffect10degrees=fAngleEffect10->Eval(eLossParticleELossMip);// in micrometers
1391e633 373 // Angle with respect to the wires assuming that chambers are perpendicular to the z axis.
d7c4fbc4 374 sigmaEffectThetadegrees = sigmaEffect10degrees/fAngleEffectNorma->Eval(thetawires*kRaddeg); // For 5mm gap
1391e633 375 if ( (iChamber==1) || (iChamber==2) )
acc838fd 376 sigmaEffectThetadegrees/=(1.09833e+00+1.70000e-02*(thetawires*kRaddeg)); // The gap is different (4mm)
d7c4fbc4 377 yAngleEffect=1.e-04*gRandom->Gaus(0,sigmaEffectThetadegrees); // Error due to the angle effect in cm
1391e633 378 }
374ebd7d 379 }
1391e633 380
333f7cda 381 // Detection elements ids
e118b27e 382 AliMUONGeometryModule* geometry
383 = Chamber(iChamber-1).GetGeometry();
384
385 AliMUONGeometryDetElement* detElement
386 = geometry->FindBySensitiveVolume(CurrentVolumePath());
387
333f7cda 388 Int_t detElemId = 0;
e118b27e 389 if (detElement) detElemId = detElement->GetUniqueID();
333f7cda 390
391 if (!detElemId) {
392 cerr << "Chamber id: "
393 << setw(3) << iChamber << " "
394 << "Current SV: "
395 << CurrentVolumePath()
396 << " detElemId: "
397 << setw(5) << detElemId
398 << endl;
399 Double_t x, y, z;
400 gMC->TrackPosition(x, y, z);
401 cerr << " global position: "
402 << x << ", " << y << ", " << z
403 << endl;
8c343c7c 404 AliWarning("DetElemId not identified.");
333f7cda 405 }
406
1391e633 407 // One hit per chamber
47464038 408 GetMUONData()->AddHit(fIshunt,
409 gAlice->GetMCApp()->GetCurrentTrackNumber(),
410 iChamber, ipart,
411 fTrackPosition.X(),
412 fTrackPosition.Y()+yAngleEffect,
413 fTrackPosition.Z(),
414 gMC->TrackTime(),
415 fTrackMomentum.P(),
416 theta,
417 phi,
418 fStepSum[idvol],
419 fDestepSum[idvol],
420 fTrackPosition.X(),
421 fTrackPosition.Y(),
422 fTrackPosition.Z());
423
1391e633 424// if (GetDebug()){
425// Info("StepManager Exit","Particle exiting from chamber %d",iChamber);
426// Info("StepManager Exit","StepSum %f eloss geant %g ",fStepSum[idvol],fDestepSum[idvol]);
427// Info("StepManager Exit","Track Position %f %f %f",fTrackPosition.X(),fTrackPosition.Y(),fTrackPosition.Z()) ;
428// }
429 fStepSum[idvol] =0; // Reset for the next event
430 fDestepSum[idvol]=0; // Reset for the next event
431 }
abaf7c9d 432}
5f91c9e8 433
d59b2ec3 434//_______________________________________________________________________________
435void AliMUONv1::StepManager2()
436{
437 // Stepmanager for the chambers
438
439 if (fStepManagerVersionOld) {
440 StepManagerOld2();
441 return;
442 }
443
444 // Only charged tracks
445 if( !(gMC->TrackCharge()) ) return;
446 // Only charged tracks
447
448 // Only gas gap inside chamber
449 // Tag chambers and record hits when track enters
450 static Int_t idvol=-1;
451 Int_t iChamber=0;
452 Int_t id=0;
453 Int_t copy;
454 const Float_t kBig = 1.e10;
455
456
457 //
458 // Only gas gap inside chamber
459 // Tag chambers and record hits when track enters
460 id=gMC->CurrentVolID(copy);
461 iChamber = GetChamberId(id);
462 idvol = iChamber -1;
463
464 if (idvol == -1) return;
465
466 // Filling TrackRefs file for MUON. Our Track references are the active volume of the chambers
467 if ( (gMC->IsTrackEntering() || gMC->IsTrackExiting() ) )
468 AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber());
469
470 if( gMC->IsTrackEntering() ) {
471 Float_t theta = fTrackMomentum.Theta();
472 if ((TMath::Pi()-theta)*kRaddeg>=15.) gMC->SetMaxStep(fStepMaxInActiveGas); // We use Pi-theta because z is negative
473 }
474
475// if (GetDebug()) {
476// Float_t z = ( (AliMUONChamber*)(*fChambers)[idvol])->Z() ;
477// Info("StepManager Step","Active volume found %d chamber %d Z chamber is %f ",idvol,iChamber, z);
478// }
479 // Particule id and mass,
480 Int_t ipart = gMC->TrackPid();
481 Float_t mass = gMC->TrackMass();
482
483 fDestepSum[idvol]+=gMC->Edep();
484 // Get current particle id (ipart), track position (pos) and momentum (mom)
485 if ( fStepSum[idvol]==0.0 ) gMC->TrackMomentum(fTrackMomentum);
486 fStepSum[idvol]+=gMC->TrackStep();
487
488// if (GetDebug()) {
489// Info("StepManager Step","iChamber %d, Particle %d, theta %f phi %f mass %f StepSum %f eloss %g",
490// iChamber,ipart, fTrackMomentum.Theta()*kRaddeg, fTrackMomentum.Phi()*kRaddeg, mass, fStepSum[idvol], gMC->Edep());// Info("StepManager Step","Track Momentum %f %f %f", fTrackMomentum.X(), fTrackMomentum.Y(), fTrackMomentum.Z()) ;
491// gMC->TrackPosition(fTrackPosition);
492// Info("StepManager Step","Track Position %f %f %f",fTrackPosition.X(),fTrackPosition.Y(),fTrackPosition.Z()) ;
493// }
494
495 // Track left chamber or StepSum larger than fStepMaxInActiveGas
496 if ( gMC->IsTrackExiting() ||
497 gMC->IsTrackStop() ||
498 gMC->IsTrackDisappeared()||
499 (fStepSum[idvol]>fStepMaxInActiveGas) ) {
500
501 if ( gMC->IsTrackExiting() ||
502 gMC->IsTrackStop() ||
503 gMC->IsTrackDisappeared() ) gMC->SetMaxStep(kBig);
504
505 gMC->TrackPosition(fTrackPosition);
506 Float_t theta = fTrackMomentum.Theta();
507 Float_t phi = fTrackMomentum.Phi();
508
509 TLorentzVector backToWire( fStepSum[idvol]/2.*sin(theta)*cos(phi),
510 fStepSum[idvol]/2.*sin(theta)*sin(phi),
511 fStepSum[idvol]/2.*cos(theta),0.0 );
512 // if (GetDebug())
513 // Info("StepManager Exit","Track Position %f %f %f",fTrackPosition.X(),fTrackPosition.Y(),fTrackPosition.Z()) ;
514 // if (GetDebug())
515 // Info("StepManager Exit ","Track backToWire %f %f %f",backToWire.X(),backToWire.Y(),backToWire.Z()) ;
516 fTrackPosition-=backToWire;
517
518 //-------------- Angle effect
519 // Ratio between energy loss of particle and Mip as a function of BetaGamma of particle (Energy/Mass)
520
521 Float_t betaxGamma = fTrackMomentum.P()/mass;// pc/mc2
522 Float_t sigmaEffect10degrees;
523 Float_t sigmaEffectThetadegrees;
524 Float_t eLossParticleELossMip;
525 Float_t yAngleEffect=0.;
526 Float_t thetawires = TMath::Abs( TMath::ASin( TMath::Sin(TMath::Pi()-theta) * TMath::Sin(phi) ) );// We use Pi-theta because z is negative
527
528
529 if (fAngleEffect){
530 if ( (betaxGamma >3.2) && (thetawires*kRaddeg<=15.) ) {
531 betaxGamma=TMath::Log(betaxGamma);
532 eLossParticleELossMip = fElossRatio->Eval(betaxGamma);
533 // 10 degrees is a reference for a model (arbitrary)
534 sigmaEffect10degrees=fAngleEffect10->Eval(eLossParticleELossMip);// in micrometers
535 // Angle with respect to the wires assuming that chambers are perpendicular to the z axis.
536 sigmaEffectThetadegrees = sigmaEffect10degrees/fAngleEffectNorma->Eval(thetawires*kRaddeg); // For 5mm gap
537 if ( (iChamber==1) || (iChamber==2) )
538 sigmaEffectThetadegrees/=(1.09833e+00+1.70000e-02*(thetawires*kRaddeg)); // The gap is different (4mm)
539 yAngleEffect=1.e-04*gRandom->Gaus(0,sigmaEffectThetadegrees); // Error due to the angle effect in cm
540 }
541 }
542
543 // Detection elements ids
544 AliMUONGeometryModule* geometry
545 = Chamber(iChamber-1).GetGeometry();
546
547 AliMUONGeometryDetElement* detElement
548 = geometry->FindBySensitiveVolume(CurrentVolumePath());
549
550 Int_t detElemId = 0;
551 if (detElement) detElemId = detElement->GetUniqueID();
552
553 if (!detElemId) {
554 cerr << "Chamber id: "
555 << setw(3) << iChamber << " "
556 << "Current SV: "
557 << CurrentVolumePath()
558 << " detElemId: "
559 << setw(5) << detElemId
560 << endl;
561 Double_t x, y, z;
562 gMC->TrackPosition(x, y, z);
563 cerr << " global position: "
564 << x << ", " << y << ", " << z
565 << endl;
566 AliError("DetElemId not identified.");
567 }
568
569 // One hit per chamber
8690a0a6 570 GetMUONData()->AddHit2(fIshunt,
d59b2ec3 571 gAlice->GetMCApp()->GetCurrentTrackNumber(),
572 detElemId, ipart,
573 fTrackPosition.X(),
574 fTrackPosition.Y()+yAngleEffect,
575 fTrackPosition.Z(),
576 gMC->TrackTime(),
577 fTrackMomentum.P(),
578 theta,
579 phi,
580 fStepSum[idvol],
581 fDestepSum[idvol],
582 fTrackPosition.X(),
583 fTrackPosition.Y(),
584 fTrackPosition.Z());
585
586// if (GetDebug()){
587// Info("StepManager Exit","Particle exiting from chamber %d",iChamber);
588// Info("StepManager Exit","StepSum %f eloss geant %g ",fStepSum[idvol],fDestepSum[idvol]);
589// Info("StepManager Exit","Track Position %f %f %f",fTrackPosition.X(),fTrackPosition.Y(),fTrackPosition.Z()) ;
590// }
591 fStepSum[idvol] =0; // Reset for the next event
592 fDestepSum[idvol]=0; // Reset for the next event
593 }
594}
595
4ac9d21e 596//__________________________________________
c33d9661 597void AliMUONv1::StepManagerOld()
a9e2aefa 598{
d7c4fbc4 599 // Old Stepmanager for the chambers
d59b2ec3 600 // TBR
601
a9e2aefa 602 Int_t copy, id;
acc838fd 603 static Int_t idvol =-1;
a9e2aefa 604 static Int_t vol[2];
605 Int_t ipart;
606 TLorentzVector pos;
607 TLorentzVector mom;
608 Float_t theta,phi;
609 Float_t destep, step;
abaf7c9d 610
d7c4fbc4 611 static Float_t sstep;
1e8fff9c 612 static Float_t eloss, eloss2, xhit, yhit, zhit, tof, tlength;
2eb55fab 613 const Float_t kBig = 1.e10;
a9e2aefa 614 static Float_t hits[15];
615
616 TClonesArray &lhits = *fHits;
617
618 //
a9e2aefa 619 //
620 // Only charged tracks
621 if( !(gMC->TrackCharge()) ) return;
622 //
623 // Only gas gap inside chamber
624 // Tag chambers and record hits when track enters
a9e2aefa 625 id=gMC->CurrentVolID(copy);
5f91c9e8 626 vol[0] = GetChamberId(id);
627 idvol = vol[0] -1;
628
629 if (idvol == -1) return;
630
a9e2aefa 631 //
632 // Get current particle id (ipart), track position (pos) and momentum (mom)
633 gMC->TrackPosition(pos);
634 gMC->TrackMomentum(mom);
635
636 ipart = gMC->TrackPid();
a9e2aefa 637
638 //
639 // momentum loss and steplength in last step
640 destep = gMC->Edep();
641 step = gMC->TrackStep();
abaf7c9d 642 // cout<<"------------"<<step<<endl;
a9e2aefa 643 //
644 // record hits when track enters ...
645 if( gMC->IsTrackEntering()) {
abaf7c9d 646
a9e2aefa 647 gMC->SetMaxStep(fMaxStepGas);
648 Double_t tc = mom[0]*mom[0]+mom[1]*mom[1];
649 Double_t rt = TMath::Sqrt(tc);
650 Double_t pmom = TMath::Sqrt(tc+mom[2]*mom[2]);
2eb55fab 651 Double_t tx = mom[0]/pmom;
652 Double_t ty = mom[1]/pmom;
653 Double_t tz = mom[2]/pmom;
654 Double_t s = ((AliMUONChamber*)(*fChambers)[idvol])
acc838fd 655 ->ResponseModel()
656 ->Pitch()/tz;
a9e2aefa 657 theta = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg;
658 phi = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
659 hits[0] = Float_t(ipart); // Geant3 particle type
2eb55fab 660 hits[1] = pos[0]+s*tx; // X-position for hit
661 hits[2] = pos[1]+s*ty; // Y-position for hit
662 hits[3] = pos[2]+s*tz; // Z-position for hit
a9e2aefa 663 hits[4] = theta; // theta angle of incidence
664 hits[5] = phi; // phi angle of incidence
ce3f5e87 665 hits[8] = 0;//PadHits does not exist anymore (Float_t) fNPadHits; // first padhit
a9e2aefa 666 hits[9] = -1; // last pad hit
2eb55fab 667 hits[10] = mom[3]; // hit momentum P
668 hits[11] = mom[0]; // Px
669 hits[12] = mom[1]; // Py
670 hits[13] = mom[2]; // Pz
a9e2aefa 671 tof=gMC->TrackTime();
2eb55fab 672 hits[14] = tof; // Time of flight
673 tlength = 0;
674 eloss = 0;
675 eloss2 = 0;
d7c4fbc4 676 sstep=0;
2eb55fab 677 xhit = pos[0];
678 yhit = pos[1];
679 zhit = pos[2];
681d067b 680 Chamber(idvol).ChargeCorrelationInit();
a9e2aefa 681 // Only if not trigger chamber
1e8fff9c 682
abaf7c9d 683// printf("---------------------------\n");
684// printf(">>>> Y = %f \n",hits[2]);
685// printf("---------------------------\n");
686
1e8fff9c 687
688
abaf7c9d 689 // if(idvol < AliMUONConstants::NTrackingCh()) {
acc838fd 690// //
691// // Initialize hit position (cursor) in the segmentation model
692// ((AliMUONChamber*) (*fChambers)[idvol])
693// ->SigGenInit(pos[0], pos[1], pos[2]);
abaf7c9d 694// } else {
acc838fd 695// //geant3->Gpcxyz();
696// //printf("In the Trigger Chamber #%d\n",idvol-9);
abaf7c9d 697// }
a9e2aefa 698 }
699 eloss2+=destep;
d7c4fbc4 700 sstep+=step;
abaf7c9d 701
d7c4fbc4 702 // cout<<sstep<<endl;
abaf7c9d 703
a9e2aefa 704 //
705 // Calculate the charge induced on a pad (disintegration) in case
706 //
707 // Mip left chamber ...
708 if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
709 gMC->SetMaxStep(kBig);
710 eloss += destep;
711 tlength += step;
712
802a864d 713 Float_t x0,y0,z0;
714 Float_t localPos[3];
715 Float_t globalPos[3] = {pos[0], pos[1], pos[2]};
802a864d 716 gMC->Gmtod(globalPos,localPos,1);
717
2eb55fab 718 if(idvol < AliMUONConstants::NTrackingCh()) {
a9e2aefa 719// tracking chambers
acc838fd 720 x0 = 0.5*(xhit+pos[0]);
721 y0 = 0.5*(yhit+pos[1]);
722 z0 = 0.5*(zhit+pos[2]);
a9e2aefa 723 } else {
724// trigger chambers
acc838fd 725 x0 = xhit;
726 y0 = yhit;
727 z0 = 0.;
a9e2aefa 728 }
729
1e8fff9c 730
ce3f5e87 731 // if (eloss >0) MakePadHits(x0,y0,z0,eloss,tof,idvol);
a9e2aefa 732
acc838fd 733
2eb55fab 734 hits[6] = tlength; // track length
735 hits[7] = eloss2; // de/dx energy loss
736
abaf7c9d 737
ce3f5e87 738 // if (fNPadHits > (Int_t)hits[8]) {
acc838fd 739 // hits[8] = hits[8]+1;
740 // hits[9] = 0: // PadHits does not exist anymore (Float_t) fNPadHits;
ce3f5e87 741 //}
2eb55fab 742//
743// new hit
744
a9e2aefa 745 new(lhits[fNhits++])
bcf37928 746 AliMUONHit(fIshunt, gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits, kTRUE);
a9e2aefa 747 eloss = 0;
748 //
749 // Check additional signal generation conditions
750 // defined by the segmentation
a75f073c 751 // model (boundary crossing conditions)
752 // only for tracking chambers
a9e2aefa 753 } else if
a75f073c 754 ((idvol < AliMUONConstants::NTrackingCh()) &&
755 ((AliMUONChamber*) (*fChambers)[idvol])->SigGenCond(pos[0], pos[1], pos[2]))
a9e2aefa 756 {
757 ((AliMUONChamber*) (*fChambers)[idvol])
acc838fd 758 ->SigGenInit(pos[0], pos[1], pos[2]);
802a864d 759
760 Float_t localPos[3];
761 Float_t globalPos[3] = {pos[0], pos[1], pos[2]};
762 gMC->Gmtod(globalPos,localPos,1);
763
e0f71fb7 764 eloss += destep;
802a864d 765
ce3f5e87 766 // if (eloss > 0 && idvol < AliMUONConstants::NTrackingCh())
acc838fd 767 // MakePadHits(0.5*(xhit+pos[0]),0.5*(yhit+pos[1]),pos[2],eloss,tof,idvol);
a9e2aefa 768 xhit = pos[0];
769 yhit = pos[1];
e0f71fb7 770 zhit = pos[2];
771 eloss = 0;
a9e2aefa 772 tlength += step ;
773 //
774 // nothing special happened, add up energy loss
775 } else {
776 eloss += destep;
777 tlength += step ;
778 }
779}
333f7cda 780
d59b2ec3 781//__________________________________________
782void AliMUONv1::StepManagerOld2()
333f7cda 783{
d59b2ec3 784 // Old Stepmanager for the chambers
785 Int_t copy, id;
786 static Int_t idvol =-1;
787 static Int_t vol[2];
788 Int_t ipart;
789 TLorentzVector pos;
790 TLorentzVector mom;
791 Float_t theta,phi;
792 Float_t destep, step;
793
794 static Float_t sstep;
795 static Float_t eloss, eloss2, xhit, yhit, zhit, tof, tlength;
796 const Float_t kBig = 1.e10;
797 static Float_t hits[15];
798
799 TClonesArray &lhits = *fHits;
800
801 //
802 //
803 // Only charged tracks
804 if( !(gMC->TrackCharge()) ) return;
805 //
806 // Only gas gap inside chamber
807 // Tag chambers and record hits when track enters
808 id=gMC->CurrentVolID(copy);
809
810 Int_t iChamber = GetChamberId(id);
811 idvol = iChamber-1;
812
813 if (idvol == -1) return;
814
815 // Detection elements id
816 AliMUONGeometryModule* geometry
817 = Chamber(iChamber-1).GetGeometry();
818
819 AliMUONGeometryDetElement* detElement
820 = geometry->FindBySensitiveVolume(CurrentVolumePath());
821
822 Int_t detElemId = 0;
823 if (detElement) detElemId = detElement->GetUniqueID();
824
825 if (!detElemId) {
826 cerr << "Chamber id: "
827 << setw(3) << iChamber << " "
828 << "Current SV: "
829 << CurrentVolumePath()
830 << " detElemId: "
831 << setw(5) << detElemId
832 << endl;
833 Double_t x, y, z;
834 gMC->TrackPosition(x, y, z);
835 cerr << " global position: "
836 << x << ", " << y << ", " << z
837 << endl;
838 AliError("DetElemId not identified.");
839 }
840 vol[0] = detElemId;
841
842 //
843 // Get current particle id (ipart), track position (pos) and momentum (mom)
844 gMC->TrackPosition(pos);
845 gMC->TrackMomentum(mom);
846
847 ipart = gMC->TrackPid();
848
849 //
850 // momentum loss and steplength in last step
851 destep = gMC->Edep();
852 step = gMC->TrackStep();
853 // cout<<"------------"<<step<<endl;
854 //
855 // record hits when track enters ...
856 if( gMC->IsTrackEntering()) {
857
858 gMC->SetMaxStep(fMaxStepGas);
859 Double_t tc = mom[0]*mom[0]+mom[1]*mom[1];
860 Double_t rt = TMath::Sqrt(tc);
861 Double_t pmom = TMath::Sqrt(tc+mom[2]*mom[2]);
862 Double_t tx = mom[0]/pmom;
863 Double_t ty = mom[1]/pmom;
864 Double_t tz = mom[2]/pmom;
865 Double_t s = ((AliMUONChamber*)(*fChambers)[idvol])
866 ->ResponseModel()
867 ->Pitch()/tz;
868 theta = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg;
869 phi = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
870 hits[0] = Float_t(ipart); // Geant3 particle type
871 hits[1] = pos[0]+s*tx; // X-position for hit
872 hits[2] = pos[1]+s*ty; // Y-position for hit
873 hits[3] = pos[2]+s*tz; // Z-position for hit
874 hits[4] = theta; // theta angle of incidence
875 hits[5] = phi; // phi angle of incidence
876 hits[8] = 0;//PadHits does not exist anymore (Float_t) fNPadHits; // first padhit
877 hits[9] = -1; // last pad hit
878 hits[10] = mom[3]; // hit momentum P
879 hits[11] = mom[0]; // Px
880 hits[12] = mom[1]; // Py
881 hits[13] = mom[2]; // Pz
882 tof=gMC->TrackTime();
883 hits[14] = tof; // Time of flight
884 tlength = 0;
885 eloss = 0;
886 eloss2 = 0;
887 sstep=0;
888 xhit = pos[0];
889 yhit = pos[1];
890 zhit = pos[2];
891 Chamber(idvol).ChargeCorrelationInit();
892 // Only if not trigger chamber
893
894// printf("---------------------------\n");
895// printf(">>>> Y = %f \n",hits[2]);
896// printf("---------------------------\n");
897
898
899
900 // if(idvol < AliMUONConstants::NTrackingCh()) {
901// //
902// // Initialize hit position (cursor) in the segmentation model
903// ((AliMUONChamber*) (*fChambers)[idvol])
904// ->SigGenInit(pos[0], pos[1], pos[2]);
905// } else {
906// //geant3->Gpcxyz();
907// //printf("In the Trigger Chamber #%d\n",idvol-9);
908// }
909 }
910 eloss2+=destep;
911 sstep+=step;
912
913 // cout<<sstep<<endl;
914
915 //
916 // Calculate the charge induced on a pad (disintegration) in case
917 //
918 // Mip left chamber ...
919 if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
920 gMC->SetMaxStep(kBig);
921 eloss += destep;
922 tlength += step;
923
924 Float_t x0,y0,z0;
925 Float_t localPos[3];
926 Float_t globalPos[3] = {pos[0], pos[1], pos[2]};
927 gMC->Gmtod(globalPos,localPos,1);
928
929 if(idvol < AliMUONConstants::NTrackingCh()) {
930// tracking chambers
931 x0 = 0.5*(xhit+pos[0]);
932 y0 = 0.5*(yhit+pos[1]);
933 z0 = 0.5*(zhit+pos[2]);
934 } else {
935// trigger chambers
936 x0 = xhit;
937 y0 = yhit;
938 z0 = 0.;
939 }
940
333f7cda 941
d59b2ec3 942 // if (eloss >0) MakePadHits(x0,y0,z0,eloss,tof,idvol);
943
944
945 hits[6] = tlength; // track length
946 hits[7] = eloss2; // de/dx energy loss
333f7cda 947
333f7cda 948
d59b2ec3 949 // if (fNPadHits > (Int_t)hits[8]) {
950 // hits[8] = hits[8]+1;
951 // hits[9] = 0: // PadHits does not exist anymore (Float_t) fNPadHits;
952 //}
953//
954// new hit
955
956 new(lhits[fNhits++])
957 AliMUONHit(fIshunt, gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits);
958 eloss = 0;
959 //
960 // Check additional signal generation conditions
961 // defined by the segmentation
962 // model (boundary crossing conditions)
963 // only for tracking chambers
964 } else if
965 ((idvol < AliMUONConstants::NTrackingCh()) &&
966 ((AliMUONChamber*) (*fChambers)[idvol])->SigGenCond(pos[0], pos[1], pos[2]))
967 {
968 ((AliMUONChamber*) (*fChambers)[idvol])
969 ->SigGenInit(pos[0], pos[1], pos[2]);
333f7cda 970
d59b2ec3 971 Float_t localPos[3];
972 Float_t globalPos[3] = {pos[0], pos[1], pos[2]};
973 gMC->Gmtod(globalPos,localPos,1);
974
975 eloss += destep;
976
977 // if (eloss > 0 && idvol < AliMUONConstants::NTrackingCh())
978 // MakePadHits(0.5*(xhit+pos[0]),0.5*(yhit+pos[1]),pos[2],eloss,tof,idvol);
979 xhit = pos[0];
980 yhit = pos[1];
981 zhit = pos[2];
982 eloss = 0;
983 tlength += step ;
984 //
985 // nothing special happened, add up energy loss
986 } else {
987 eloss += destep;
988 tlength += step ;
333f7cda 989 }
d59b2ec3 990}