]> git.uio.no Git - u/mrichter/AliRoot.git/blame - MUON/AliMUONv1.cxx
git://git.uio.no / u / mrichter / AliRoot.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Added <assert.h> include
[u/mrichter/AliRoot.git] / MUON / AliMUONv1.cxx
CommitLineData
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"
edee5e63 33#include "AliMUONFactoryV3.h"
a713db22 34#include "AliMUONFactoryV2.h"
a9e2aefa 35#include "AliMUONHit.h"
8c449e83 36#include "AliMUONTriggerCircuit.h"
d4bb94a1 37#include "AliMUONGeometryBuilder.h"
e118b27e 38#include "AliMUONGeometryModule.h"
333f7cda 39#include "AliMUONGeometrySVMap.h"
e118b27e 40#include "AliMUONGeometryDetElement.h"
88cb7938 41#include "AliMagF.h"
42#include "AliRun.h"
5d12ce38 43#include "AliMC.h"
8c343c7c 44#include "AliLog.h"
a9e2aefa 45
edee5e63 46#include <string>
47
a9e2aefa 48ClassImp(AliMUONv1)
49
50//___________________________________________
30178c30 51AliMUONv1::AliMUONv1()
52 : AliMUON(),
e8e385f7 53 fStepManagerVersionOld(kTRUE),
54 fStepManagerVersionDE(kTRUE),
d4bb94a1 55 fAngleEffect(kTRUE),
56 fStepMaxInActiveGas(0.6),
57 fStepSum(0x0),
58 fDestepSum(0x0),
59 fTrackMomentum(),
60 fTrackPosition(),
61 fElossRatio(0x0),
62 fAngleEffect10(0x0),
edee5e63 63 fAngleEffectNorma(0x0),
64 fFactory(0x0)
a9e2aefa 65{
d4bb94a1 66// Default constructor
edee5e63 67 AliDebug(1,Form("default (empty) ctor this=%p",this));
1391e633 68}
d4bb94a1 69
a9e2aefa 70//___________________________________________
71AliMUONv1::AliMUONv1(const char *name, const char *title)
d4bb94a1 72 : AliMUON(name,title),
e8e385f7 73 fStepManagerVersionOld(kTRUE),
74 fStepManagerVersionDE(kTRUE),
d4bb94a1 75 fAngleEffect(kTRUE),
76 fStepMaxInActiveGas(0.6),
77 fStepSum(0x0),
78 fDestepSum(0x0),
79 fTrackMomentum(),
80 fTrackPosition(),
81 fElossRatio(0x0),
82 fAngleEffect10(0x0),
edee5e63 83 fAngleEffectNorma(0x0),
84 fFactory(0x0)
a9e2aefa 85{
d4bb94a1 86// Standard onstructor
87
edee5e63 88 AliDebug(1,Form("ctor this=%p",this));
89
ba030c0e 90 // By default include all stations
c33d9661 91
1391e633 92 fStepSum = new Float_t [AliMUONConstants::NCh()];
93 fDestepSum = new Float_t [AliMUONConstants::NCh()];
94 for (Int_t i=0; i<AliMUONConstants::NCh(); i++) {
95 fStepSum[i] =0.0;
96 fDestepSum[i]=0.0;
97 }
98 // Ratio of particle mean eloss with respect MIP's Khalil Boudjemline, sep 2003, PhD.Thesis and Particle Data Book
99 fElossRatio = new TF1("ElossRatio","[0]+[1]*x+[2]*x*x+[3]*x*x*x+[4]*x*x*x*x",0.5,5.);
100 fElossRatio->SetParameter(0,1.02138);
101 fElossRatio->SetParameter(1,-9.54149e-02);
102 fElossRatio->SetParameter(2,+7.83433e-02);
103 fElossRatio->SetParameter(3,-9.98208e-03);
104 fElossRatio->SetParameter(4,+3.83279e-04);
105
106 // Angle effect in tracking chambers at theta =10 degres as a function of ElossRatio (Khalil BOUDJEMLINE sep 2003 Ph.D Thesis) (in micrometers)
107 fAngleEffect10 = new TF1("AngleEffect10","[0]+[1]*x+[2]*x*x",0.5,3.0);
108 fAngleEffect10->SetParameter(0, 1.90691e+02);
109 fAngleEffect10->SetParameter(1,-6.62258e+01);
110 fAngleEffect10->SetParameter(2,+1.28247e+01);
111 // Angle effect: Normalisation form theta=10 degres to theta between 0 and 10 (Khalil BOUDJEMLINE sep 2003 Ph.D Thesis)
112 // Angle with respect to the wires assuming that chambers are perpendicular to the z axis.
113 fAngleEffectNorma = new TF1("AngleEffectNorma","[0]+[1]*x+[2]*x*x+[3]*x*x*x",0.0,10.0);
114 fAngleEffectNorma->SetParameter(0,4.148);
115 fAngleEffectNorma->SetParameter(1,-6.809e-01);
116 fAngleEffectNorma->SetParameter(2,5.151e-02);
117 fAngleEffectNorma->SetParameter(3,-1.490e-03);
a9e2aefa 118}
119
fb1bf5c0 120//_____________________________________________________________________________
121AliMUONv1::AliMUONv1(const AliMUONv1& right)
122 : AliMUON(right)
123{
124 // copy constructor (not implemented)
125
8c343c7c 126 AliFatal("Copy constructor not provided.");
fb1bf5c0 127}
128
a9e2aefa 129//___________________________________________
acc838fd 130AliMUONv1::~AliMUONv1()
a9e2aefa 131{
acc838fd 132// Destructor
edee5e63 133 AliDebug(1,Form("dtor this=%p",this));
d4bb94a1 134 delete [] fStepSum;
135 delete [] fDestepSum;
136 delete fElossRatio;
137 delete fAngleEffect10;
8109731a 138 delete fAngleEffectNorma;
edee5e63 139 delete fFactory;
acc838fd 140}
b17c0c87 141
fb1bf5c0 142//_____________________________________________________________________________
143AliMUONv1& AliMUONv1::operator=(const AliMUONv1& right)
144{
145 // assignement operator (not implemented)
146
147 // check assignement to self
148 if (this == &right) return *this;
149
8c343c7c 150 AliFatal("Assignement operator not provided.");
fb1bf5c0 151
152 return *this;
153}
154
acc838fd 155//__________________________________________________
156void AliMUONv1::CreateGeometry()
157{
b17c0c87 158//
d4bb94a1 159// Construct geometry using geometry builder
a9e2aefa 160//
a9e2aefa 161
d4bb94a1 162 fGeometryBuilder->CreateGeometry();
acc838fd 163}
a9e2aefa 164
acc838fd 165//________________________________________________________________
a9e2aefa 166void AliMUONv1::CreateMaterials()
167{
a9e2aefa 168//
d4bb94a1 169// Construct materials using geometry builder
170//
acc838fd 171
d4bb94a1 172 fGeometryBuilder->CreateMaterials();
a9e2aefa 173}
174
acc838fd 175//___________________________________________
a9e2aefa 176void AliMUONv1::Init()
a713db22 177{
edee5e63 178 AliDebug(1,"Start Init for version 1 - CPC chamber type");
179 Int_t i;
002920d1 180
edee5e63 181 //
182 // Initialize geometry
183 //
184 fGeometryBuilder->InitGeometry();
185 AliDebug(1,"Finished Init for version 1 - CPC chamber type");
186
187 std::string ftype(GetTitle());
188
189 if ( ftype == "default" || ftype == "AliMUONFactoryV2")
190 {
191 fFactory = new AliMUONFactoryV2("New MUON Factory");
192 (static_cast<AliMUONFactoryV2*>(fFactory))->Build(this,"default");
193 }
194 else if ( ftype == "AliMUONFactoryV3" )
195 {
196 fFactory = new AliMUONFactoryV3("New MUON Factory");
197 (static_cast<AliMUONFactoryV3*>(fFactory))->Build(this,"default");
198 }
199 else
200 {
201 AliFatal(Form("Wrong factory type : %s",ftype.c_str()));
202 }
203
204 //
205 // Initialize segmentation
206 //
207
208 for (i=0; i<AliMUONConstants::NCh(); i++)
209 ( (AliMUONChamber*) (*fChambers)[i])->Init(2);// new segmentation
210
211
212 // trigger circuit
213 // cp
214 for (i=0; i<AliMUONConstants::NTriggerCircuit(); i++)
215 ( (AliMUONTriggerCircuit*) (*fTriggerCircuits)[i])->Init(i);
216
a9e2aefa 217}
1391e633 218
d4bb94a1 219//__________________________________________________________________
220Int_t AliMUONv1::GetChamberId(Int_t volId) const
221{
222// Check if the volume with specified volId is a sensitive volume (gas)
223// of some chamber and returns the chamber number;
224// if not sensitive volume - return 0.
225// ---
226
227/*
228 for (Int_t i = 1; i <= AliMUONConstants::NCh(); i++)
229 if (volId==((AliMUONChamber*)(*fChambers)[i-1])->GetGid()) return i;
230*/
231 for (Int_t i = 1; i <= AliMUONConstants::NCh(); i++)
232 if ( ((AliMUONChamber*)(*fChambers)[i-1])->IsSensId(volId) ) return i;
233
234 return 0;
235}
333f7cda 236
237//_______________________________________________________________________________
238TString AliMUONv1::CurrentVolumePath() const
239{
240// Returns current volume path
241// (Could be removed when this function is available via gMC)
242// ---
243
244 TString path = "";
245 TString name;
246 Int_t copyNo;
247 Int_t imother = 0;
248 do {
249 name = gMC->CurrentVolOffName(imother);
250 gMC->CurrentVolOffID(imother++, copyNo);
251 TString add = "/";
252 add += name;
253 add += ".";
254 add += copyNo;
255 path.Insert(0,add);
256 }
257 while ( name != TString("ALIC") );
258
259 return path;
260}
261
1391e633 262//_______________________________________________________________________________
c33d9661 263void AliMUONv1::StepManager()
264{
d7c4fbc4 265 // Stepmanager for the chambers
d59b2ec3 266 // TBR
267
268 if (fStepManagerVersionDE) {
269 StepManager2();
270 return;
271 }
d7c4fbc4 272
c33d9661 273
274 // Only charged tracks
d59b2ec3 275 if( !(gMC->TrackCharge()) ) return;
1391e633 276 // Only charged tracks
277
c33d9661 278 // Only gas gap inside chamber
279 // Tag chambers and record hits when track enters
acc838fd 280 static Int_t idvol=-1;
1391e633 281 Int_t iChamber=0;
282 Int_t id=0;
283 Int_t copy;
284 const Float_t kBig = 1.e10;
285
acc838fd 286
287 //
288 // Only gas gap inside chamber
289 // Tag chambers and record hits when track enters
c33d9661 290 id=gMC->CurrentVolID(copy);
acc838fd 291 iChamber = GetChamberId(id);
292 idvol = iChamber -1;
293
294 if (idvol == -1) return;
abaf7c9d 295
967a2a25 296 // Filling TrackRefs file for MUON. Our Track references are the active volume of the chambers
297 if ( (gMC->IsTrackEntering() || gMC->IsTrackExiting() ) )
298 AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber());
299
1391e633 300 if( gMC->IsTrackEntering() ) {
301 Float_t theta = fTrackMomentum.Theta();
4ac9d21e 302 if ((TMath::Pi()-theta)*kRaddeg>=15.) gMC->SetMaxStep(fStepMaxInActiveGas); // We use Pi-theta because z is negative
303 }
abaf7c9d 304
5a0e88a7 305 // AliDebug(1,
306 // Form("Active volume found %d chamber %d Z chamber is %f ",idvol,iChamber,
307 // ( (AliMUONChamber*)(*fChambers)[idvol])->Z()));
308 // Particule id and mass,
1391e633 309 Int_t ipart = gMC->TrackPid();
310 Float_t mass = gMC->TrackMass();
311
312 fDestepSum[idvol]+=gMC->Edep();
313 // Get current particle id (ipart), track position (pos) and momentum (mom)
314 if ( fStepSum[idvol]==0.0 ) gMC->TrackMomentum(fTrackMomentum);
315 fStepSum[idvol]+=gMC->TrackStep();
abaf7c9d 316
5a0e88a7 317 // if(AliDebugLevel()) {
318 // AliDebug(1,
319 // Form("iChamber %d, Particle %d, theta %f phi %f mass %f StepSum %f eloss %g",
320 // iChamber,ipart, fTrackMomentum.Theta()*kRaddeg, fTrackMomentum.Phi()*kRaddeg,
321 // mass, fStepSum[idvol], gMC->Edep()));
322 // AliDebug(1,
323 // Form("Track Momentum %f %f %f", fTrackMomentum.X(), fTrackMomentum.Y(),
324 // fTrackMomentum.Z()));
325 // gMC->TrackPosition(fTrackPosition);
326 // AliDebug(1,
327 // Form("Track Position %f %f %f",fTrackPosition.X(),fTrackPosition.Y(),
328 // fTrackPosition.Z())) ;
329 // }
1391e633 330
331 // Track left chamber or StepSum larger than fStepMaxInActiveGas
332 if ( gMC->IsTrackExiting() ||
333 gMC->IsTrackStop() ||
334 gMC->IsTrackDisappeared()||
335 (fStepSum[idvol]>fStepMaxInActiveGas) ) {
336
337 if ( gMC->IsTrackExiting() ||
acc838fd 338 gMC->IsTrackStop() ||
339 gMC->IsTrackDisappeared() ) gMC->SetMaxStep(kBig);
1391e633 340
341 gMC->TrackPosition(fTrackPosition);
342 Float_t theta = fTrackMomentum.Theta();
343 Float_t phi = fTrackMomentum.Phi();
344
d7c4fbc4 345 TLorentzVector backToWire( fStepSum[idvol]/2.*sin(theta)*cos(phi),
acc838fd 346 fStepSum[idvol]/2.*sin(theta)*sin(phi),
347 fStepSum[idvol]/2.*cos(theta),0.0 );
5a0e88a7 348 // AliDebug(1,Form("Exit: Track Position %f %f %f",fTrackPosition.X(),
349 // fTrackPosition.Y(),fTrackPosition.Z())) ;
350 // AliDebug(1,Form("Exit: Track backToWire %f %f %f",backToWire.X(),
351 // backToWire.Y(),backToWire.Z()) ;
d7c4fbc4 352 fTrackPosition-=backToWire;
1391e633 353
354 //-------------- Angle effect
355 // Ratio between energy loss of particle and Mip as a function of BetaGamma of particle (Energy/Mass)
356
30178c30 357 Float_t betaxGamma = fTrackMomentum.P()/mass;// pc/mc2
d7c4fbc4 358 Float_t sigmaEffect10degrees;
359 Float_t sigmaEffectThetadegrees;
360 Float_t eLossParticleELossMip;
361 Float_t yAngleEffect=0.;
362 Float_t thetawires = TMath::Abs( TMath::ASin( TMath::Sin(TMath::Pi()-theta) * TMath::Sin(phi) ) );// We use Pi-theta because z is negative
363
374ebd7d 364
365 if (fAngleEffect){
30178c30 366 if ( (betaxGamma >3.2) && (thetawires*kRaddeg<=15.) ) {
367 betaxGamma=TMath::Log(betaxGamma);
368 eLossParticleELossMip = fElossRatio->Eval(betaxGamma);
1391e633 369 // 10 degrees is a reference for a model (arbitrary)
d7c4fbc4 370 sigmaEffect10degrees=fAngleEffect10->Eval(eLossParticleELossMip);// in micrometers
1391e633 371 // Angle with respect to the wires assuming that chambers are perpendicular to the z axis.
d7c4fbc4 372 sigmaEffectThetadegrees = sigmaEffect10degrees/fAngleEffectNorma->Eval(thetawires*kRaddeg); // For 5mm gap
1391e633 373 if ( (iChamber==1) || (iChamber==2) )
acc838fd 374 sigmaEffectThetadegrees/=(1.09833e+00+1.70000e-02*(thetawires*kRaddeg)); // The gap is different (4mm)
d7c4fbc4 375 yAngleEffect=1.e-04*gRandom->Gaus(0,sigmaEffectThetadegrees); // Error due to the angle effect in cm
1391e633 376 }
374ebd7d 377 }
1391e633 378
333f7cda 379 // Detection elements ids
e118b27e 380 AliMUONGeometryModule* geometry
381 = Chamber(iChamber-1).GetGeometry();
382
383 AliMUONGeometryDetElement* detElement
384 = geometry->FindBySensitiveVolume(CurrentVolumePath());
385
333f7cda 386 Int_t detElemId = 0;
e118b27e 387 if (detElement) detElemId = detElement->GetUniqueID();
333f7cda 388
389 if (!detElemId) {
390 cerr << "Chamber id: "
391 << setw(3) << iChamber << " "
392 << "Current SV: "
393 << CurrentVolumePath()
394 << " detElemId: "
395 << setw(5) << detElemId
396 << endl;
397 Double_t x, y, z;
398 gMC->TrackPosition(x, y, z);
399 cerr << " global position: "
400 << x << ", " << y << ", " << z
401 << endl;
8c343c7c 402 AliWarning("DetElemId not identified.");
333f7cda 403 }
404
1391e633 405 // One hit per chamber
47464038 406 GetMUONData()->AddHit(fIshunt,
407 gAlice->GetMCApp()->GetCurrentTrackNumber(),
408 iChamber, ipart,
409 fTrackPosition.X(),
410 fTrackPosition.Y()+yAngleEffect,
411 fTrackPosition.Z(),
412 gMC->TrackTime(),
413 fTrackMomentum.P(),
414 theta,
415 phi,
416 fStepSum[idvol],
417 fDestepSum[idvol],
418 fTrackPosition.X(),
419 fTrackPosition.Y(),
420 fTrackPosition.Z());
421
5a0e88a7 422// if (AliDebugLevel()){
423// AliDebug(1,Form("Exit: Particle exiting from chamber %d",iChamber));
424// AliDebug(1,Form("Exit: StepSum %f eloss geant %g ",fStepSum[idvol],fDestepSum[idvol]));
425// AliDebug(1,Form("Exit: Track Position %f %f %f",fTrackPosition.X(),fTrackPosition.Y(),fTrackPosition.Z())) ;
1391e633 426// }
427 fStepSum[idvol] =0; // Reset for the next event
428 fDestepSum[idvol]=0; // Reset for the next event
429 }
abaf7c9d 430}
5f91c9e8 431
d59b2ec3 432//_______________________________________________________________________________
433void AliMUONv1::StepManager2()
434{
435 // Stepmanager for the chambers
436
d59b2ec3 437 // Only charged tracks
438 if( !(gMC->TrackCharge()) ) return;
439 // Only charged tracks
440
441 // Only gas gap inside chamber
442 // Tag chambers and record hits when track enters
443 static Int_t idvol=-1;
444 Int_t iChamber=0;
445 Int_t id=0;
446 Int_t copy;
447 const Float_t kBig = 1.e10;
448
449
450 //
451 // Only gas gap inside chamber
452 // Tag chambers and record hits when track enters
453 id=gMC->CurrentVolID(copy);
454 iChamber = GetChamberId(id);
455 idvol = iChamber -1;
456
457 if (idvol == -1) return;
458
459 // Filling TrackRefs file for MUON. Our Track references are the active volume of the chambers
460 if ( (gMC->IsTrackEntering() || gMC->IsTrackExiting() ) )
461 AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber());
462
463 if( gMC->IsTrackEntering() ) {
464 Float_t theta = fTrackMomentum.Theta();
465 if ((TMath::Pi()-theta)*kRaddeg>=15.) gMC->SetMaxStep(fStepMaxInActiveGas); // We use Pi-theta because z is negative
466 }
467
5a0e88a7 468 // AliDebug(1,
469 // Form("Active volume found %d chamber %d Z chamber is %f ",idvol,iChamber,
470 // ( (AliMUONChamber*)(*fChambers)[idvol])->Z())) ;
d59b2ec3 471 // Particule id and mass,
472 Int_t ipart = gMC->TrackPid();
473 Float_t mass = gMC->TrackMass();
474
475 fDestepSum[idvol]+=gMC->Edep();
476 // Get current particle id (ipart), track position (pos) and momentum (mom)
477 if ( fStepSum[idvol]==0.0 ) gMC->TrackMomentum(fTrackMomentum);
478 fStepSum[idvol]+=gMC->TrackStep();
479
5a0e88a7 480 // if (AliDebugLevel()) {
481 // AliDebug(1,Form("Step, iChamber %d, Particle %d, theta %f phi %f mass %f StepSum %f eloss %g",
482 // iChamber,ipart, fTrackMomentum.Theta()*kRaddeg, fTrackMomentum.Phi()*kRaddeg,
483 // mass, fStepSum[idvol], gMC->Edep()));
484 // AliDebug(1,Form("Step:Track Momentum %f %f %f", fTrackMomentum.X(), fTrackMomentum.Y(),
485 // fTrackMomentum.Z()));
486 // gMC->TrackPosition(fTrackPosition);
487 // AliDebug(1,Form("Step: Track Position %f %f %f",fTrackPosition.X(),
488 // fTrackPosition.Y(),fTrackPosition.Z())) ;
489 //}
d59b2ec3 490
491 // Track left chamber or StepSum larger than fStepMaxInActiveGas
492 if ( gMC->IsTrackExiting() ||
493 gMC->IsTrackStop() ||
494 gMC->IsTrackDisappeared()||
495 (fStepSum[idvol]>fStepMaxInActiveGas) ) {
496
497 if ( gMC->IsTrackExiting() ||
498 gMC->IsTrackStop() ||
499 gMC->IsTrackDisappeared() ) gMC->SetMaxStep(kBig);
500
501 gMC->TrackPosition(fTrackPosition);
502 Float_t theta = fTrackMomentum.Theta();
503 Float_t phi = fTrackMomentum.Phi();
504
505 TLorentzVector backToWire( fStepSum[idvol]/2.*sin(theta)*cos(phi),
506 fStepSum[idvol]/2.*sin(theta)*sin(phi),
507 fStepSum[idvol]/2.*cos(theta),0.0 );
5a0e88a7 508 // AliDebug(1,
509 // Form("Track Position %f %f %f",fTrackPosition.X(),fTrackPosition.Y(),fTrackPosition.Z()));
510 // AliDebug(1,
511 // Form("Exit: Track backToWire %f %f %f",backToWire.X(),backToWire.Y(),backToWire.Z())) ;
d59b2ec3 512 fTrackPosition-=backToWire;
513
514 //-------------- Angle effect
515 // Ratio between energy loss of particle and Mip as a function of BetaGamma of particle (Energy/Mass)
516
517 Float_t betaxGamma = fTrackMomentum.P()/mass;// pc/mc2
518 Float_t sigmaEffect10degrees;
519 Float_t sigmaEffectThetadegrees;
520 Float_t eLossParticleELossMip;
521 Float_t yAngleEffect=0.;
522 Float_t thetawires = TMath::Abs( TMath::ASin( TMath::Sin(TMath::Pi()-theta) * TMath::Sin(phi) ) );// We use Pi-theta because z is negative
523
524
525 if (fAngleEffect){
526 if ( (betaxGamma >3.2) && (thetawires*kRaddeg<=15.) ) {
527 betaxGamma=TMath::Log(betaxGamma);
528 eLossParticleELossMip = fElossRatio->Eval(betaxGamma);
529 // 10 degrees is a reference for a model (arbitrary)
530 sigmaEffect10degrees=fAngleEffect10->Eval(eLossParticleELossMip);// in micrometers
531 // Angle with respect to the wires assuming that chambers are perpendicular to the z axis.
532 sigmaEffectThetadegrees = sigmaEffect10degrees/fAngleEffectNorma->Eval(thetawires*kRaddeg); // For 5mm gap
533 if ( (iChamber==1) || (iChamber==2) )
534 sigmaEffectThetadegrees/=(1.09833e+00+1.70000e-02*(thetawires*kRaddeg)); // The gap is different (4mm)
535 yAngleEffect=1.e-04*gRandom->Gaus(0,sigmaEffectThetadegrees); // Error due to the angle effect in cm
536 }
537 }
538
539 // Detection elements ids
540 AliMUONGeometryModule* geometry
541 = Chamber(iChamber-1).GetGeometry();
542
543 AliMUONGeometryDetElement* detElement
544 = geometry->FindBySensitiveVolume(CurrentVolumePath());
545
546 Int_t detElemId = 0;
547 if (detElement) detElemId = detElement->GetUniqueID();
548
549 if (!detElemId) {
550 cerr << "Chamber id: "
551 << setw(3) << iChamber << " "
552 << "Current SV: "
553 << CurrentVolumePath()
554 << " detElemId: "
555 << setw(5) << detElemId
556 << endl;
557 Double_t x, y, z;
558 gMC->TrackPosition(x, y, z);
559 cerr << " global position: "
560 << x << ", " << y << ", " << z
561 << endl;
562 AliError("DetElemId not identified.");
563 }
564
565 // One hit per chamber
8690a0a6 566 GetMUONData()->AddHit2(fIshunt,
d59b2ec3 567 gAlice->GetMCApp()->GetCurrentTrackNumber(),
568 detElemId, ipart,
569 fTrackPosition.X(),
570 fTrackPosition.Y()+yAngleEffect,
571 fTrackPosition.Z(),
572 gMC->TrackTime(),
573 fTrackMomentum.P(),
574 theta,
575 phi,
576 fStepSum[idvol],
577 fDestepSum[idvol],
578 fTrackPosition.X(),
579 fTrackPosition.Y(),
580 fTrackPosition.Z());
581
5a0e88a7 582 // AliDebug(1,Form("Exit: Particle exiting from chamber %d",iChamber));
583 // AliDebug(1,Form("Exit: StepSum %f eloss geant %g ",fStepSum[idvol],fDestepSum[idvol]));
584 // AliDebug(1,Form("Exit: Track Position %f %f %f",fTrackPosition.X(),fTrackPosition.Y(),fTrackPosition.Z()) ;
585
d59b2ec3 586 fStepSum[idvol] =0; // Reset for the next event
587 fDestepSum[idvol]=0; // Reset for the next event
588 }
589}