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Added functions for reading & writing transformations and sensitive volume maps files...
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1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * SigmaEffect_thetadegrees *
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 purpeateose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15
16/* $Id$ */
17
18/////////////////////////////////////////////////////////
19// Manager and hits classes for set:MUON version 1 //
20/////////////////////////////////////////////////////////
21
22#include <TRandom.h>
23#include <TF1.h>
24#include <TClonesArray.h>
25#include <TRandom.h>
26#include <TVirtualMC.h>
27
28#include "AliMUONv1.h"
29#include "AliConst.h"
30#include "AliMUONChamber.h"
31#include "AliMUONConstants.h"
32#include "AliMUONFactory.h"
33#include "AliMUONHit.h"
34#include "AliMUONTriggerCircuit.h"
35#include "AliMUONGeometryBuilder.h"
36#include "AliMagF.h"
37#include "AliRun.h"
38#include "AliMC.h"
39
40ClassImp(AliMUONv1)
41
42//___________________________________________
43AliMUONv1::AliMUONv1()
44 : AliMUON(),
45 fStepManagerVersionOld(kFALSE),
46 fAngleEffect(kTRUE),
47 fStepMaxInActiveGas(0.6),
48 fStepSum(0x0),
49 fDestepSum(0x0),
50 fTrackMomentum(),
51 fTrackPosition(),
52 fElossRatio(0x0),
53 fAngleEffect10(0x0),
54 fAngleEffectNorma(0x0)
55{
56// Default constructor
57}
58
59//___________________________________________
60AliMUONv1::AliMUONv1(const char *name, const char *title)
61 : AliMUON(name,title),
62 fStepManagerVersionOld(kFALSE),
63 fAngleEffect(kTRUE),
64 fStepMaxInActiveGas(0.6),
65 fStepSum(0x0),
66 fDestepSum(0x0),
67 fTrackMomentum(),
68 fTrackPosition(),
69 fElossRatio(0x0),
70 fAngleEffect10(0x0),
71 fAngleEffectNorma(0x0)
72{
73// Standard onstructor
74
75 // By default include all stations
76 AliMUONFactory factory;
77 factory.Build(this, title);
78
79 fStepSum = new Float_t [AliMUONConstants::NCh()];
80 fDestepSum = new Float_t [AliMUONConstants::NCh()];
81 for (Int_t i=0; i<AliMUONConstants::NCh(); i++) {
82 fStepSum[i] =0.0;
83 fDestepSum[i]=0.0;
84 }
85 // Ratio of particle mean eloss with respect MIP's Khalil Boudjemline, sep 2003, PhD.Thesis and Particle Data Book
86 fElossRatio = new TF1("ElossRatio","[0]+[1]*x+[2]*x*x+[3]*x*x*x+[4]*x*x*x*x",0.5,5.);
87 fElossRatio->SetParameter(0,1.02138);
88 fElossRatio->SetParameter(1,-9.54149e-02);
89 fElossRatio->SetParameter(2,+7.83433e-02);
90 fElossRatio->SetParameter(3,-9.98208e-03);
91 fElossRatio->SetParameter(4,+3.83279e-04);
92
93 // Angle effect in tracking chambers at theta =10 degres as a function of ElossRatio (Khalil BOUDJEMLINE sep 2003 Ph.D Thesis) (in micrometers)
94 fAngleEffect10 = new TF1("AngleEffect10","[0]+[1]*x+[2]*x*x",0.5,3.0);
95 fAngleEffect10->SetParameter(0, 1.90691e+02);
96 fAngleEffect10->SetParameter(1,-6.62258e+01);
97 fAngleEffect10->SetParameter(2,+1.28247e+01);
98 // Angle effect: Normalisation form theta=10 degres to theta between 0 and 10 (Khalil BOUDJEMLINE sep 2003 Ph.D Thesis)
99 // Angle with respect to the wires assuming that chambers are perpendicular to the z axis.
100 fAngleEffectNorma = new TF1("AngleEffectNorma","[0]+[1]*x+[2]*x*x+[3]*x*x*x",0.0,10.0);
101 fAngleEffectNorma->SetParameter(0,4.148);
102 fAngleEffectNorma->SetParameter(1,-6.809e-01);
103 fAngleEffectNorma->SetParameter(2,5.151e-02);
104 fAngleEffectNorma->SetParameter(3,-1.490e-03);
105}
106
107//_____________________________________________________________________________
108AliMUONv1::AliMUONv1(const AliMUONv1& right)
109 : AliMUON(right)
110{
111 // copy constructor (not implemented)
112
113 Fatal("AliMUONv1", "Copy constructor not provided.");
114}
115
116//___________________________________________
117AliMUONv1::~AliMUONv1()
118{
119// Destructor
120
121 delete [] fStepSum;
122 delete [] fDestepSum;
123 delete fElossRatio;
124 delete fAngleEffect10;
125 delete fAngleEffectNorma;
126}
127
128//_____________________________________________________________________________
129AliMUONv1& AliMUONv1::operator=(const AliMUONv1& right)
130{
131 // assignement operator (not implemented)
132
133 // check assignement to self
134 if (this == &right) return *this;
135
136 Fatal("operator =", "Assignement operator not provided.");
137
138 return *this;
139}
140
141//__________________________________________________
142void AliMUONv1::CreateGeometry()
143{
144//
145// Construct geometry using geometry builder
146//
147
148 fGeometryBuilder->CreateGeometry();
149}
150
151//________________________________________________________________
152void AliMUONv1::CreateMaterials()
153{
154//
155// Construct materials using geometry builder
156//
157
158 fGeometryBuilder->CreateMaterials();
159}
160
161//___________________________________________
162void AliMUONv1::Init()
163{
164 //
165 // Initialize Tracking Chambers
166 //
167
168 if(fDebug) printf("\n%s: Start Init for version 1 - CPC chamber type\n\n",ClassName());
169 Int_t i;
170 for (i=0; i<AliMUONConstants::NCh(); i++) {
171 ( (AliMUONChamber*) (*fChambers)[i])->Init();
172 }
173
174 //
175 // Initialize geometry
176 //
177 fGeometryBuilder->InitGeometry();
178 if(fDebug) printf("\n%s: Finished Init for version 1 - CPC chamber type\n",ClassName());
179
180 //cp
181 if(fDebug) printf("\n%s: Start Init for Trigger Circuits\n",ClassName());
182 for (i=0; i<AliMUONConstants::NTriggerCircuit(); i++) {
183 ( (AliMUONTriggerCircuit*) (*fTriggerCircuits)[i])->Init(i);
184 }
185 if(fDebug) printf("%s: Finished Init for Trigger Circuits\n",ClassName());
186 //cp
187}
188
189//__________________________________________________________________
190Int_t AliMUONv1::GetChamberId(Int_t volId) const
191{
192// Check if the volume with specified volId is a sensitive volume (gas)
193// of some chamber and returns the chamber number;
194// if not sensitive volume - return 0.
195// ---
196
197/*
198 for (Int_t i = 1; i <= AliMUONConstants::NCh(); i++)
199 if (volId==((AliMUONChamber*)(*fChambers)[i-1])->GetGid()) return i;
200*/
201 for (Int_t i = 1; i <= AliMUONConstants::NCh(); i++)
202 if ( ((AliMUONChamber*)(*fChambers)[i-1])->IsSensId(volId) ) return i;
203
204 return 0;
205}
206//_______________________________________________________________________________
207void AliMUONv1::StepManager()
208{
209 // Stepmanager for the chambers
210
211 if (fStepManagerVersionOld) {
212 StepManagerOld();
213 return;
214 }
215
216 // Only charged tracks
217 if( !(gMC->TrackCharge()) ) return;
218 // Only charged tracks
219
220 // Only gas gap inside chamber
221 // Tag chambers and record hits when track enters
222 static Int_t idvol=-1;
223 Int_t iChamber=0;
224 Int_t id=0;
225 Int_t copy;
226 const Float_t kBig = 1.e10;
227
228
229 //
230 // Only gas gap inside chamber
231 // Tag chambers and record hits when track enters
232 id=gMC->CurrentVolID(copy);
233 iChamber = GetChamberId(id);
234 idvol = iChamber -1;
235
236 if (idvol == -1) return;
237
238 // Filling TrackRefs file for MUON. Our Track references are the active volume of the chambers
239 if ( (gMC->IsTrackEntering() || gMC->IsTrackExiting() ) )
240 AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber());
241
242 if( gMC->IsTrackEntering() ) {
243 Float_t theta = fTrackMomentum.Theta();
244 if ((TMath::Pi()-theta)*kRaddeg>=15.) gMC->SetMaxStep(fStepMaxInActiveGas); // We use Pi-theta because z is negative
245 }
246
247// if (GetDebug()) {
248// Float_t z = ( (AliMUONChamber*)(*fChambers)[idvol])->Z() ;
249// Info("StepManager Step","Active volume found %d chamber %d Z chamber is %f ",idvol,iChamber, z);
250// }
251 // Particule id and mass,
252 Int_t ipart = gMC->TrackPid();
253 Float_t mass = gMC->TrackMass();
254
255 fDestepSum[idvol]+=gMC->Edep();
256 // Get current particle id (ipart), track position (pos) and momentum (mom)
257 if ( fStepSum[idvol]==0.0 ) gMC->TrackMomentum(fTrackMomentum);
258 fStepSum[idvol]+=gMC->TrackStep();
259
260// if (GetDebug()) {
261// Info("StepManager Step","iChamber %d, Particle %d, theta %f phi %f mass %f StepSum %f eloss %g",
262// iChamber,ipart, fTrackMomentum.Theta()*kRaddeg, fTrackMomentum.Phi()*kRaddeg, mass, fStepSum[idvol], gMC->Edep());
263// Info("StepManager Step","Track Momentum %f %f %f", fTrackMomentum.X(), fTrackMomentum.Y(), fTrackMomentum.Z()) ;
264// gMC->TrackPosition(fTrackPosition);
265// Info("StepManager Step","Track Position %f %f %f",fTrackPosition.X(),fTrackPosition.Y(),fTrackPosition.Z()) ;
266// }
267
268 // Track left chamber or StepSum larger than fStepMaxInActiveGas
269 if ( gMC->IsTrackExiting() ||
270 gMC->IsTrackStop() ||
271 gMC->IsTrackDisappeared()||
272 (fStepSum[idvol]>fStepMaxInActiveGas) ) {
273
274 if ( gMC->IsTrackExiting() ||
275 gMC->IsTrackStop() ||
276 gMC->IsTrackDisappeared() ) gMC->SetMaxStep(kBig);
277
278 gMC->TrackPosition(fTrackPosition);
279 Float_t theta = fTrackMomentum.Theta();
280 Float_t phi = fTrackMomentum.Phi();
281
282 TLorentzVector backToWire( fStepSum[idvol]/2.*sin(theta)*cos(phi),
283 fStepSum[idvol]/2.*sin(theta)*sin(phi),
284 fStepSum[idvol]/2.*cos(theta),0.0 );
285 // if (GetDebug())
286 // Info("StepManager Exit","Track Position %f %f %f",fTrackPosition.X(),fTrackPosition.Y(),fTrackPosition.Z()) ;
287 // if (GetDebug())
288 // Info("StepManager Exit ","Track backToWire %f %f %f",backToWire.X(),backToWire.Y(),backToWire.Z()) ;
289 fTrackPosition-=backToWire;
290
291 //-------------- Angle effect
292 // Ratio between energy loss of particle and Mip as a function of BetaGamma of particle (Energy/Mass)
293
294 Float_t betaxGamma = fTrackMomentum.P()/mass;// pc/mc2
295 Float_t sigmaEffect10degrees;
296 Float_t sigmaEffectThetadegrees;
297 Float_t eLossParticleELossMip;
298 Float_t yAngleEffect=0.;
299 Float_t thetawires = TMath::Abs( TMath::ASin( TMath::Sin(TMath::Pi()-theta) * TMath::Sin(phi) ) );// We use Pi-theta because z is negative
300
301
302 if (fAngleEffect){
303 if ( (betaxGamma >3.2) && (thetawires*kRaddeg<=15.) ) {
304 betaxGamma=TMath::Log(betaxGamma);
305 eLossParticleELossMip = fElossRatio->Eval(betaxGamma);
306 // 10 degrees is a reference for a model (arbitrary)
307 sigmaEffect10degrees=fAngleEffect10->Eval(eLossParticleELossMip);// in micrometers
308 // Angle with respect to the wires assuming that chambers are perpendicular to the z axis.
309 sigmaEffectThetadegrees = sigmaEffect10degrees/fAngleEffectNorma->Eval(thetawires*kRaddeg); // For 5mm gap
310 if ( (iChamber==1) || (iChamber==2) )
311 sigmaEffectThetadegrees/=(1.09833e+00+1.70000e-02*(thetawires*kRaddeg)); // The gap is different (4mm)
312 yAngleEffect=1.e-04*gRandom->Gaus(0,sigmaEffectThetadegrees); // Error due to the angle effect in cm
313 }
314 }
315
316 // One hit per chamber
317 GetMUONData()->AddHit(fIshunt,
318 gAlice->GetMCApp()->GetCurrentTrackNumber(),
319 iChamber, ipart,
320 fTrackPosition.X(),
321 fTrackPosition.Y()+yAngleEffect,
322 fTrackPosition.Z(),
323 gMC->TrackTime(),
324 fTrackMomentum.P(),
325 theta,
326 phi,
327 fStepSum[idvol],
328 fDestepSum[idvol],
329 fTrackPosition.X(),
330 fTrackPosition.Y(),
331 fTrackPosition.Z());
332
333// if (GetDebug()){
334// Info("StepManager Exit","Particle exiting from chamber %d",iChamber);
335// Info("StepManager Exit","StepSum %f eloss geant %g ",fStepSum[idvol],fDestepSum[idvol]);
336// Info("StepManager Exit","Track Position %f %f %f",fTrackPosition.X(),fTrackPosition.Y(),fTrackPosition.Z()) ;
337// }
338 fStepSum[idvol] =0; // Reset for the next event
339 fDestepSum[idvol]=0; // Reset for the next event
340 }
341}
342
343//__________________________________________
344void AliMUONv1::StepManagerOld()
345{
346 // Old Stepmanager for the chambers
347 Int_t copy, id;
348 static Int_t idvol =-1;
349 static Int_t vol[2];
350 Int_t ipart;
351 TLorentzVector pos;
352 TLorentzVector mom;
353 Float_t theta,phi;
354 Float_t destep, step;
355
356 static Float_t sstep;
357 static Float_t eloss, eloss2, xhit, yhit, zhit, tof, tlength;
358 const Float_t kBig = 1.e10;
359 static Float_t hits[15];
360
361 TClonesArray &lhits = *fHits;
362
363 //
364 //
365 // Only charged tracks
366 if( !(gMC->TrackCharge()) ) return;
367 //
368 // Only gas gap inside chamber
369 // Tag chambers and record hits when track enters
370 id=gMC->CurrentVolID(copy);
371 vol[0] = GetChamberId(id);
372 idvol = vol[0] -1;
373
374 if (idvol == -1) return;
375
376 //
377 // Get current particle id (ipart), track position (pos) and momentum (mom)
378 gMC->TrackPosition(pos);
379 gMC->TrackMomentum(mom);
380
381 ipart = gMC->TrackPid();
382
383 //
384 // momentum loss and steplength in last step
385 destep = gMC->Edep();
386 step = gMC->TrackStep();
387 // cout<<"------------"<<step<<endl;
388 //
389 // record hits when track enters ...
390 if( gMC->IsTrackEntering()) {
391
392 gMC->SetMaxStep(fMaxStepGas);
393 Double_t tc = mom[0]*mom[0]+mom[1]*mom[1];
394 Double_t rt = TMath::Sqrt(tc);
395 Double_t pmom = TMath::Sqrt(tc+mom[2]*mom[2]);
396 Double_t tx = mom[0]/pmom;
397 Double_t ty = mom[1]/pmom;
398 Double_t tz = mom[2]/pmom;
399 Double_t s = ((AliMUONChamber*)(*fChambers)[idvol])
400 ->ResponseModel()
401 ->Pitch()/tz;
402 theta = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg;
403 phi = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
404 hits[0] = Float_t(ipart); // Geant3 particle type
405 hits[1] = pos[0]+s*tx; // X-position for hit
406 hits[2] = pos[1]+s*ty; // Y-position for hit
407 hits[3] = pos[2]+s*tz; // Z-position for hit
408 hits[4] = theta; // theta angle of incidence
409 hits[5] = phi; // phi angle of incidence
410 hits[8] = 0;//PadHits does not exist anymore (Float_t) fNPadHits; // first padhit
411 hits[9] = -1; // last pad hit
412 hits[10] = mom[3]; // hit momentum P
413 hits[11] = mom[0]; // Px
414 hits[12] = mom[1]; // Py
415 hits[13] = mom[2]; // Pz
416 tof=gMC->TrackTime();
417 hits[14] = tof; // Time of flight
418 tlength = 0;
419 eloss = 0;
420 eloss2 = 0;
421 sstep=0;
422 xhit = pos[0];
423 yhit = pos[1];
424 zhit = pos[2];
425 Chamber(idvol).ChargeCorrelationInit();
426 // Only if not trigger chamber
427
428// printf("---------------------------\n");
429// printf(">>>> Y = %f \n",hits[2]);
430// printf("---------------------------\n");
431
432
433
434 // if(idvol < AliMUONConstants::NTrackingCh()) {
435// //
436// // Initialize hit position (cursor) in the segmentation model
437// ((AliMUONChamber*) (*fChambers)[idvol])
438// ->SigGenInit(pos[0], pos[1], pos[2]);
439// } else {
440// //geant3->Gpcxyz();
441// //printf("In the Trigger Chamber #%d\n",idvol-9);
442// }
443 }
444 eloss2+=destep;
445 sstep+=step;
446
447 // cout<<sstep<<endl;
448
449 //
450 // Calculate the charge induced on a pad (disintegration) in case
451 //
452 // Mip left chamber ...
453 if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
454 gMC->SetMaxStep(kBig);
455 eloss += destep;
456 tlength += step;
457
458 Float_t x0,y0,z0;
459 Float_t localPos[3];
460 Float_t globalPos[3] = {pos[0], pos[1], pos[2]};
461 gMC->Gmtod(globalPos,localPos,1);
462
463 if(idvol < AliMUONConstants::NTrackingCh()) {
464// tracking chambers
465 x0 = 0.5*(xhit+pos[0]);
466 y0 = 0.5*(yhit+pos[1]);
467 z0 = 0.5*(zhit+pos[2]);
468 } else {
469// trigger chambers
470 x0 = xhit;
471 y0 = yhit;
472 z0 = 0.;
473 }
474
475
476 // if (eloss >0) MakePadHits(x0,y0,z0,eloss,tof,idvol);
477
478
479 hits[6] = tlength; // track length
480 hits[7] = eloss2; // de/dx energy loss
481
482
483 // if (fNPadHits > (Int_t)hits[8]) {
484 // hits[8] = hits[8]+1;
485 // hits[9] = 0: // PadHits does not exist anymore (Float_t) fNPadHits;
486 //}
487//
488// new hit
489
490 new(lhits[fNhits++])
491 AliMUONHit(fIshunt, gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits);
492 eloss = 0;
493 //
494 // Check additional signal generation conditions
495 // defined by the segmentation
496 // model (boundary crossing conditions)
497 // only for tracking chambers
498 } else if
499 ((idvol < AliMUONConstants::NTrackingCh()) &&
500 ((AliMUONChamber*) (*fChambers)[idvol])->SigGenCond(pos[0], pos[1], pos[2]))
501 {
502 ((AliMUONChamber*) (*fChambers)[idvol])
503 ->SigGenInit(pos[0], pos[1], pos[2]);
504
505 Float_t localPos[3];
506 Float_t globalPos[3] = {pos[0], pos[1], pos[2]};
507 gMC->Gmtod(globalPos,localPos,1);
508
509 eloss += destep;
510
511 // if (eloss > 0 && idvol < AliMUONConstants::NTrackingCh())
512 // MakePadHits(0.5*(xhit+pos[0]),0.5*(yhit+pos[1]),pos[2],eloss,tof,idvol);
513 xhit = pos[0];
514 yhit = pos[1];
515 zhit = pos[2];
516 eloss = 0;
517 tlength += step ;
518 //
519 // nothing special happened, add up energy loss
520 } else {
521 eloss += destep;
522 tlength += step ;
523 }
524}