- Welding section on absorber side (LHCVC2C_001)
[u/mrichter/AliRoot.git] / MUON / AliMUONv1.cxx
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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 <TLorentzVector.h>
26#include <TNode.h>
27#include <TRandom.h>
28#include <TTUBE.h>
29#include <TGeoMatrix.h>
88cb7938 30#include <TVirtualMC.h>
1391e633 31#include <TParticle.h>
a9e2aefa 32
a9e2aefa 33#include "AliConst.h"
34#include "AliMUONChamber.h"
88cb7938 35#include "AliMUONConstants.h"
36#include "AliMUONFactory.h"
a9e2aefa 37#include "AliMUONHit.h"
8c449e83 38#include "AliMUONTriggerCircuit.h"
88cb7938 39#include "AliMUONv1.h"
acc838fd 40#include "AliMUONVGeometryBuilder.h"
41#include "AliMUONChamberGeometry.h"
42#include "AliMUONGeometryEnvelope.h"
43#include "AliMUONGeometryConstituent.h"
88cb7938 44#include "AliMagF.h"
45#include "AliRun.h"
5d12ce38 46#include "AliMC.h"
a9e2aefa 47
48ClassImp(AliMUONv1)
49
50//___________________________________________
37c0cd40 51AliMUONv1::AliMUONv1() : AliMUON()
acc838fd 52 ,fTrackMomentum(), fTrackPosition(),fGlobalTransformation(0)
a9e2aefa 53{
54// Constructor
1391e633 55 fChambers = 0;
1391e633 56 fStepManagerVersionOld = kFALSE;
374ebd7d 57 fAngleEffect = kTRUE;
1391e633 58 fStepMaxInActiveGas = 0.6;
59 fStepSum = 0x0;
60 fDestepSum = 0x0;
61 fElossRatio = 0x0;
62 fAngleEffect10 = 0x0;
63 fAngleEffectNorma= 0x0;
64}
a9e2aefa 65//___________________________________________
66AliMUONv1::AliMUONv1(const char *name, const char *title)
1391e633 67 : AliMUON(name,title), fTrackMomentum(), fTrackPosition()
a9e2aefa 68{
69// Constructor
ba030c0e 70 // By default include all stations
ba030c0e 71 AliMUONFactory factory;
72 factory.Build(this, title);
c33d9661 73
74 fStepManagerVersionOld = kFALSE;
374ebd7d 75 fAngleEffect = kTRUE;
1391e633 76 fStepMaxInActiveGas = 0.6;
77
78 fStepSum = new Float_t [AliMUONConstants::NCh()];
79 fDestepSum = new Float_t [AliMUONConstants::NCh()];
80 for (Int_t i=0; i<AliMUONConstants::NCh(); i++) {
81 fStepSum[i] =0.0;
82 fDestepSum[i]=0.0;
83 }
84 // Ratio of particle mean eloss with respect MIP's Khalil Boudjemline, sep 2003, PhD.Thesis and Particle Data Book
85 fElossRatio = new TF1("ElossRatio","[0]+[1]*x+[2]*x*x+[3]*x*x*x+[4]*x*x*x*x",0.5,5.);
86 fElossRatio->SetParameter(0,1.02138);
87 fElossRatio->SetParameter(1,-9.54149e-02);
88 fElossRatio->SetParameter(2,+7.83433e-02);
89 fElossRatio->SetParameter(3,-9.98208e-03);
90 fElossRatio->SetParameter(4,+3.83279e-04);
91
92 // Angle effect in tracking chambers at theta =10 degres as a function of ElossRatio (Khalil BOUDJEMLINE sep 2003 Ph.D Thesis) (in micrometers)
93 fAngleEffect10 = new TF1("AngleEffect10","[0]+[1]*x+[2]*x*x",0.5,3.0);
94 fAngleEffect10->SetParameter(0, 1.90691e+02);
95 fAngleEffect10->SetParameter(1,-6.62258e+01);
96 fAngleEffect10->SetParameter(2,+1.28247e+01);
97 // Angle effect: Normalisation form theta=10 degres to theta between 0 and 10 (Khalil BOUDJEMLINE sep 2003 Ph.D Thesis)
98 // Angle with respect to the wires assuming that chambers are perpendicular to the z axis.
99 fAngleEffectNorma = new TF1("AngleEffectNorma","[0]+[1]*x+[2]*x*x+[3]*x*x*x",0.0,10.0);
100 fAngleEffectNorma->SetParameter(0,4.148);
101 fAngleEffectNorma->SetParameter(1,-6.809e-01);
102 fAngleEffectNorma->SetParameter(2,5.151e-02);
103 fAngleEffectNorma->SetParameter(3,-1.490e-03);
acc838fd 104
105 // Define the global transformation:
106 // Transformation from the old ALICE coordinate system to a new one:
107 // x->-x, z->-z
108 TGeoRotation* rotGlobal
109 = new TGeoRotation("rotGlobal", 90., 180., 90., 90., 180., 0.);
110 fGlobalTransformation = new TGeoCombiTrans(0., 0., 0., rotGlobal);
a9e2aefa 111}
112
fb1bf5c0 113//_____________________________________________________________________________
114AliMUONv1::AliMUONv1(const AliMUONv1& right)
115 : AliMUON(right)
116{
117 // copy constructor (not implemented)
118
119 Fatal("AliMUONv1", "Copy constructor not provided.");
120}
121
a9e2aefa 122//___________________________________________
acc838fd 123AliMUONv1::~AliMUONv1()
a9e2aefa 124{
acc838fd 125// Destructor
a9e2aefa 126
acc838fd 127 delete fGlobalTransformation;
128}
b17c0c87 129
fb1bf5c0 130//_____________________________________________________________________________
131AliMUONv1& AliMUONv1::operator=(const AliMUONv1& right)
132{
133 // assignement operator (not implemented)
134
135 // check assignement to self
136 if (this == &right) return *this;
137
138 Fatal("operator =", "Assignement operator not provided.");
139
140 return *this;
141}
142
acc838fd 143//__________________________________________________
144void AliMUONv1::CreateGeometry()
145{
b17c0c87 146//
acc838fd 147// Construct geometry using geometry builders.
a9e2aefa 148//
a9e2aefa 149
acc838fd 150 for (Int_t i=0; i<fGeometryBuilders->GetEntriesFast(); i++) {
3c084d9f 151
acc838fd 152 // Get the builder
153 AliMUONVGeometryBuilder* builder
154 = (AliMUONVGeometryBuilder*)fGeometryBuilders->At(i);
1e8fff9c 155
acc838fd 156 // Create geometry with each builder
157 if (builder) {
158 builder->CreateGeometry();
159 builder->SetTransformations();
160 }
161 }
3c084d9f 162
acc838fd 163 for (Int_t j=0; j<AliMUONConstants::NCh(); j++) {
3c084d9f 164
acc838fd 165 AliMUONChamberGeometry* geometry = Chamber(j).GetGeometry();
3c084d9f 166
acc838fd 167 if (!geometry) continue;
168 // Skip chambers with not defined geometry
169
170 // Loop over envelopes
171 const TObjArray* kEnvelopes = geometry->GetEnvelopes();
172 for (Int_t k=0; k<kEnvelopes->GetEntriesFast(); k++) {
173
174 // Get envelope
175 AliMUONGeometryEnvelope* env = (AliMUONGeometryEnvelope*)kEnvelopes->At(k);
176 const TGeoCombiTrans* kEnvTrans = env->GetTransformation();
6b82c1f0 177 const char* only = "ONLY";
178 if (env->IsMANY()) only = "MANY";
acc838fd 179
180 if (env->IsVirtual() && env->GetConstituents()->GetEntriesFast() == 0 ) {
181 // virtual envelope + nof constituents = 0
182 // => not allowed;
183 // empty virtual envelope has no sense
184 Fatal("CreateGeometry", "Virtual envelope must have constituents.");
185 return;
186 }
3c084d9f 187
acc838fd 188 if (!env->IsVirtual() && env->GetConstituents()->GetEntriesFast() > 0 ) {
189 // non virtual envelope + nof constituents > 0
190 // => not allowed;
191 // use VMC to place constituents
192 Fatal("CreateGeometry", "Non virtual envelope cannot have constituents.");
193 return;
194 }
3c084d9f 195
acc838fd 196 if (!env->IsVirtual() && env->GetConstituents()->GetEntriesFast() == 0 ) {
197 // non virtual envelope + nof constituents = 0
198 // => place envelope in ALICE by composed transformation:
199 // Tglobal * Tch * Tenv
200
201 // Compound chamber transformation with the envelope one
202 TGeoHMatrix total
203 = (*fGlobalTransformation) *
204 (*geometry->GetTransformation()) *
205 (*kEnvTrans);
206 PlaceVolume(env->GetName(), geometry->GetMotherVolume(),
6b82c1f0 207 env->GetCopyNo(), total, 0, 0, only);
acc838fd 208 }
3c084d9f 209
acc838fd 210 if (env->IsVirtual() && env->GetConstituents()->GetEntriesFast() > 0 ) {
211 // virtual envelope + nof constituents > 0
212 // => do not place envelope and place constituents
213 // in ALICE by composed transformation:
214 // Tglobal * Tch * Tenv * Tconst
215
216 for (Int_t l=0; l<env->GetConstituents()->GetEntriesFast(); l++) {
217 AliMUONGeometryConstituent* constituent
218 = (AliMUONGeometryConstituent*)env->GetConstituents()->At(l);
219
220 // Compound chamber transformation with the envelope one + the constituent one
221 TGeoHMatrix total
222 = (*fGlobalTransformation) *
223 (*geometry->GetTransformation()) *
224 (*kEnvTrans) *
225 (*constituent->GetTransformation());
226
227 PlaceVolume(constituent->GetName(), geometry->GetMotherVolume(),
228 constituent->GetCopyNo(), total,
6b82c1f0 229 constituent->GetNpar(), constituent->GetParam(), only);
acc838fd 230 }
231 }
232 }
233 }
234}
235//__________________________________________________________________
236Int_t AliMUONv1::GetChamberId(Int_t volId) const
237{
238// Check if the volume with specified volId is a sensitive volume (gas)
239// of some chamber and returns the chamber number;
240// if not sensitive volume - return 0.
241// ---
a9e2aefa 242
acc838fd 243/*
244 for (Int_t i = 1; i <= AliMUONConstants::NCh(); i++)
245 if (volId==((AliMUONChamber*)(*fChambers)[i-1])->GetGid()) return i;
246*/
247 for (Int_t i = 1; i <= AliMUONConstants::NCh(); i++)
248 if ( ((AliMUONChamber*)(*fChambers)[i-1])->IsSensId(volId) ) return i;
a9e2aefa 249
acc838fd 250 return 0;
a9e2aefa 251}
acc838fd 252//________________________________________________________________
a9e2aefa 253void AliMUONv1::CreateMaterials()
254{
acc838fd 255
a9e2aefa 256 // *** DEFINITION OF AVAILABLE MUON MATERIALS ***
257 //
b64652f5 258 // Ar-CO2 gas (80%+20%)
a9e2aefa 259 Float_t ag1[3] = { 39.95,12.01,16. };
260 Float_t zg1[3] = { 18.,6.,8. };
261 Float_t wg1[3] = { .8,.0667,.13333 };
262 Float_t dg1 = .001821;
263 //
264 // Ar-buthane-freon gas -- trigger chambers
265 Float_t atr1[4] = { 39.95,12.01,1.01,19. };
266 Float_t ztr1[4] = { 18.,6.,1.,9. };
267 Float_t wtr1[4] = { .56,.1262857,.2857143,.028 };
268 Float_t dtr1 = .002599;
269 //
270 // Ar-CO2 gas
271 Float_t agas[3] = { 39.95,12.01,16. };
272 Float_t zgas[3] = { 18.,6.,8. };
273 Float_t wgas[3] = { .74,.086684,.173316 };
274 Float_t dgas = .0018327;
275 //
276 // Ar-Isobutane gas (80%+20%) -- tracking
277 Float_t ag[3] = { 39.95,12.01,1.01 };
278 Float_t zg[3] = { 18.,6.,1. };
279 Float_t wg[3] = { .8,.057,.143 };
280 Float_t dg = .0019596;
281 //
282 // Ar-Isobutane-Forane-SF6 gas (49%+7%+40%+4%) -- trigger
283 Float_t atrig[5] = { 39.95,12.01,1.01,19.,32.066 };
284 Float_t ztrig[5] = { 18.,6.,1.,9.,16. };
285 Float_t wtrig[5] = { .49,1.08,1.5,1.84,0.04 };
286 Float_t dtrig = .0031463;
287 //
288 // bakelite
289
290 Float_t abak[3] = {12.01 , 1.01 , 16.};
291 Float_t zbak[3] = {6. , 1. , 8.};
292 Float_t wbak[3] = {6. , 6. , 1.};
293 Float_t dbak = 1.4;
294
295 Float_t epsil, stmin, deemax, tmaxfd, stemax;
296
297 Int_t iSXFLD = gAlice->Field()->Integ();
298 Float_t sXMGMX = gAlice->Field()->Max();
299 //
300 // --- Define the various materials for GEANT ---
301 AliMaterial(9, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
302 AliMaterial(10, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
303 AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500);
304 AliMixture(19, "Bakelite$", abak, zbak, dbak, -3, wbak);
305 AliMixture(20, "ArC4H10 GAS$", ag, zg, dg, 3, wg);
306 AliMixture(21, "TRIG GAS$", atrig, ztrig, dtrig, -5, wtrig);
307 AliMixture(22, "ArCO2 80%$", ag1, zg1, dg1, 3, wg1);
308 AliMixture(23, "Ar-freon $", atr1, ztr1, dtr1, 4, wtr1);
309 AliMixture(24, "ArCO2 GAS$", agas, zgas, dgas, 3, wgas);
1e8fff9c 310 // materials for slat:
311 // Sensitive area: gas (already defined)
312 // PCB: copper
313 // insulating material and frame: vetronite
314 // walls: carbon, rohacell, carbon
315 Float_t aglass[5]={12.01, 28.09, 16., 10.8, 23.};
316 Float_t zglass[5]={ 6., 14., 8., 5., 11.};
317 Float_t wglass[5]={ 0.5, 0.105, 0.355, 0.03, 0.01};
318 Float_t dglass=1.74;
319
320 // rohacell: C9 H13 N1 O2
321 Float_t arohac[4] = {12.01, 1.01, 14.010, 16.};
322 Float_t zrohac[4] = { 6., 1., 7., 8.};
323 Float_t wrohac[4] = { 9., 13., 1., 2.};
324 Float_t drohac = 0.03;
325
326 AliMaterial(31, "COPPER$", 63.54, 29., 8.96, 1.4, 0.);
327 AliMixture(32, "Vetronite$",aglass, zglass, dglass, 5, wglass);
328 AliMaterial(33, "Carbon$", 12.01, 6., 2.265, 18.8, 49.9);
329 AliMixture(34, "Rohacell$", arohac, zrohac, drohac, -4, wrohac);
330
a9e2aefa 331
332 epsil = .001; // Tracking precision,
333 stemax = -1.; // Maximum displacement for multiple scat
334 tmaxfd = -20.; // Maximum angle due to field deflection
335 deemax = -.3; // Maximum fractional energy loss, DLS
336 stmin = -.8;
337 //
338 // Air
339 AliMedium(1, "AIR_CH_US ", 15, 1, iSXFLD, sXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
340 //
341 // Aluminum
342
343 AliMedium(4, "ALU_CH_US ", 9, 0, iSXFLD, sXMGMX, tmaxfd, fMaxStepAlu,
344 fMaxDestepAlu, epsil, stmin);
345 AliMedium(5, "ALU_CH_US ", 10, 0, iSXFLD, sXMGMX, tmaxfd, fMaxStepAlu,
346 fMaxDestepAlu, epsil, stmin);
347 //
348 // Ar-isoC4H10 gas
349
350 AliMedium(6, "AR_CH_US ", 20, 1, iSXFLD, sXMGMX, tmaxfd, fMaxStepGas,
351 fMaxDestepGas, epsil, stmin);
352//
353 // Ar-Isobuthane-Forane-SF6 gas
354
355 AliMedium(7, "GAS_CH_TRIGGER ", 21, 1, iSXFLD, sXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
356
357 AliMedium(8, "BAKE_CH_TRIGGER ", 19, 0, iSXFLD, sXMGMX, tmaxfd, fMaxStepAlu,
358 fMaxDestepAlu, epsil, stmin);
359
360 AliMedium(9, "ARG_CO2 ", 22, 1, iSXFLD, sXMGMX, tmaxfd, fMaxStepGas,
361 fMaxDestepAlu, epsil, stmin);
1e8fff9c 362 // tracking media for slats: check the parameters!!
363 AliMedium(11, "PCB_COPPER ", 31, 0, iSXFLD, sXMGMX, tmaxfd,
364 fMaxStepAlu, fMaxDestepAlu, epsil, stmin);
365 AliMedium(12, "VETRONITE ", 32, 0, iSXFLD, sXMGMX, tmaxfd,
366 fMaxStepAlu, fMaxDestepAlu, epsil, stmin);
367 AliMedium(13, "CARBON ", 33, 0, iSXFLD, sXMGMX, tmaxfd,
368 fMaxStepAlu, fMaxDestepAlu, epsil, stmin);
369 AliMedium(14, "Rohacell ", 34, 0, iSXFLD, sXMGMX, tmaxfd,
370 fMaxStepAlu, fMaxDestepAlu, epsil, stmin);
acc838fd 371
372
373
374 //.Materials specific to stations
375 // created via builders
376
377 for (Int_t i=0; i<fGeometryBuilders->GetEntriesFast(); i++) {
378
379 // Get the builder
380 AliMUONVGeometryBuilder* builder
381 = (AliMUONVGeometryBuilder*)fGeometryBuilders->At(i);
382
383 // Create materials with each builder
384 if (builder) builder->CreateMaterials();
385 }
a9e2aefa 386}
387
acc838fd 388//______________________________________________________________________________
389void AliMUONv1::PlaceVolume(const TString& name, const TString& mName,
390 Int_t copyNo, const TGeoHMatrix& matrix,
6b82c1f0 391 Int_t npar, Double_t* param, const char* only) const
acc838fd 392{
393// Place the volume specified by name with the given transformation matrix
394// ---
395
396 // Do not apply global transformation
397 // if mother volume == DDIP
398 // (as it is applied on this volume)
399 TGeoHMatrix transform(matrix);
400 if (mName == TString("DDIP")) {
401 transform = (*fGlobalTransformation) * transform;
402 // To be changed to (*fGlobalTransformation).inverse()
403 // when available in TGeo
404 // To make this correct also for a general case when
405 // (*fGlobalTransformation) * *fGlobalTransformation) != 1
406 }
407
408 // Decompose transformation
409 const Double_t* xyz = transform.GetTranslation();
410 const Double_t* rm = transform.GetRotationMatrix();
411
412 //cout << "Got translation: "
413 // << xyz[0] << " " << xyz[1] << " " << xyz[2] << endl;
414
415 //cout << "Got rotation: "
416 // << rm[0] << " " << rm[1] << " " << rm[2] << endl
417 // << rm[3] << " " << rm[4] << " " << rm[5] << endl
418 // << rm[6] << " " << rm[7] << " " << rm[8] << endl;
419
420 // Check for presence of rotation
421 // (will be nice to be available in TGeo)
422 const Double_t kTolerance = 1e-04;
423 Bool_t isRotation = true;
424 if (TMath::Abs(rm[0] - 1.) < kTolerance &&
425 TMath::Abs(rm[1] - 0.) < kTolerance &&
426 TMath::Abs(rm[2] - 0.) < kTolerance &&
427 TMath::Abs(rm[3] - 0.) < kTolerance &&
428 TMath::Abs(rm[4] - 1.) < kTolerance &&
429 TMath::Abs(rm[5] - 0.) < kTolerance &&
430 TMath::Abs(rm[6] - 0.) < kTolerance &&
431 TMath::Abs(rm[7] - 0.) < kTolerance &&
432 TMath::Abs(rm[8] - 1.) < kTolerance) isRotation = false;
433
434 Int_t krot = 0;
435 if (isRotation) {
436 TGeoRotation rot;
437 rot.SetMatrix(const_cast<Double_t*>(transform.GetRotationMatrix()));
438 Double_t theta1, phi1, theta2, phi2, theta3, phi3;
439 rot.GetAngles(theta1, phi1, theta2, phi2, theta3, phi3);
440
441 //cout << "angles: "
442 // << theta1 << " " << phi1 << " "
443 // << theta2 << " " << phi2 << " "
444 // << theta3 << " " << phi3 << endl;
445
446 AliMatrix(krot, theta1, phi1, theta2, phi2, theta3, phi3);
447 }
448
449 // Place the volume in ALIC
6b82c1f0 450 if (npar == 0)
451 gMC->Gspos(name, copyNo, mName, xyz[0], xyz[1], xyz[2] , krot, only);
acc838fd 452 else
6b82c1f0 453 gMC->Gsposp(name, copyNo, mName, xyz[0], xyz[1], xyz[2] , krot, only,
acc838fd 454 param, npar);
455
456}
a9e2aefa 457
acc838fd 458//___________________________________________
a9e2aefa 459void AliMUONv1::Init()
460{
461 //
462 // Initialize Tracking Chambers
463 //
464
9e1a0ddb 465 if(fDebug) printf("\n%s: Start Init for version 1 - CPC chamber type\n\n",ClassName());
e17592e9 466 Int_t i;
f665c1ea 467 for (i=0; i<AliMUONConstants::NCh(); i++) {
a9e2aefa 468 ( (AliMUONChamber*) (*fChambers)[i])->Init();
469 }
470
471 //
472 // Set the chamber (sensitive region) GEANT identifier
acc838fd 473 //
474 for (Int_t i=0; i<fGeometryBuilders->GetEntriesFast(); i++) {
475
476 // Get the builder
477 AliMUONVGeometryBuilder* builder
478 = (AliMUONVGeometryBuilder*)fGeometryBuilders->At(i);
479
480 // Set sesitive volumes with each builder
481 if (builder) builder->SetSensitiveVolumes();
482 }
483
484/*
485 //
486 // Set the chamber (sensitive region) GEANT identifier
b74f1c6a 487 ((AliMUONChamber*)(*fChambers)[0])->SetGid(gMC->VolId("S01G"));
488 ((AliMUONChamber*)(*fChambers)[1])->SetGid(gMC->VolId("S02G"));
b17c0c87 489
b74f1c6a 490 ((AliMUONChamber*)(*fChambers)[2])->SetGid(gMC->VolId("S03G"));
491 ((AliMUONChamber*)(*fChambers)[3])->SetGid(gMC->VolId("S04G"));
b17c0c87 492
1e8fff9c 493 ((AliMUONChamber*)(*fChambers)[4])->SetGid(gMC->VolId("S05G"));
494 ((AliMUONChamber*)(*fChambers)[5])->SetGid(gMC->VolId("S06G"));
b17c0c87 495
1e8fff9c 496 ((AliMUONChamber*)(*fChambers)[6])->SetGid(gMC->VolId("S07G"));
497 ((AliMUONChamber*)(*fChambers)[7])->SetGid(gMC->VolId("S08G"));
b17c0c87 498
1e8fff9c 499 ((AliMUONChamber*)(*fChambers)[8])->SetGid(gMC->VolId("S09G"));
500 ((AliMUONChamber*)(*fChambers)[9])->SetGid(gMC->VolId("S10G"));
b17c0c87 501
b74f1c6a 502 ((AliMUONChamber*)(*fChambers)[10])->SetGid(gMC->VolId("SG1A"));
503 ((AliMUONChamber*)(*fChambers)[11])->SetGid(gMC->VolId("SG2A"));
504 ((AliMUONChamber*)(*fChambers)[12])->SetGid(gMC->VolId("SG3A"));
505 ((AliMUONChamber*)(*fChambers)[13])->SetGid(gMC->VolId("SG4A"));
acc838fd 506*/
9e1a0ddb 507 if(fDebug) printf("\n%s: Finished Init for version 1 - CPC chamber type\n",ClassName());
a9e2aefa 508
509 //cp
9e1a0ddb 510 if(fDebug) printf("\n%s: Start Init for Trigger Circuits\n",ClassName());
f665c1ea 511 for (i=0; i<AliMUONConstants::NTriggerCircuit(); i++) {
a9e2aefa 512 ( (AliMUONTriggerCircuit*) (*fTriggerCircuits)[i])->Init(i);
513 }
9e1a0ddb 514 if(fDebug) printf("%s: Finished Init for Trigger Circuits\n",ClassName());
a9e2aefa 515 //cp
a9e2aefa 516}
1391e633 517
518//_______________________________________________________________________________
c33d9661 519void AliMUONv1::StepManager()
520{
d7c4fbc4 521 // Stepmanager for the chambers
522
1391e633 523 if (fStepManagerVersionOld) {
c33d9661 524 StepManagerOld();
525 return;
526 }
c33d9661 527
528 // Only charged tracks
529 if( !(gMC->TrackCharge()) ) return;
1391e633 530 // Only charged tracks
531
c33d9661 532 // Only gas gap inside chamber
533 // Tag chambers and record hits when track enters
acc838fd 534 static Int_t idvol=-1;
1391e633 535 Int_t iChamber=0;
536 Int_t id=0;
537 Int_t copy;
538 const Float_t kBig = 1.e10;
539
acc838fd 540
541 //
542 // Only gas gap inside chamber
543 // Tag chambers and record hits when track enters
c33d9661 544 id=gMC->CurrentVolID(copy);
acc838fd 545 iChamber = GetChamberId(id);
546 idvol = iChamber -1;
547
548 if (idvol == -1) return;
abaf7c9d 549
967a2a25 550 // Filling TrackRefs file for MUON. Our Track references are the active volume of the chambers
551 if ( (gMC->IsTrackEntering() || gMC->IsTrackExiting() ) )
552 AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber());
553
1391e633 554 if( gMC->IsTrackEntering() ) {
555 Float_t theta = fTrackMomentum.Theta();
4ac9d21e 556 if ((TMath::Pi()-theta)*kRaddeg>=15.) gMC->SetMaxStep(fStepMaxInActiveGas); // We use Pi-theta because z is negative
557 }
abaf7c9d 558
1391e633 559// if (GetDebug()) {
560// Float_t z = ( (AliMUONChamber*)(*fChambers)[idvol])->Z() ;
561// Info("StepManager Step","Active volume found %d chamber %d Z chamber is %f ",idvol,iChamber, z);
562// }
563 // Particule id and mass,
564 Int_t ipart = gMC->TrackPid();
565 Float_t mass = gMC->TrackMass();
566
567 fDestepSum[idvol]+=gMC->Edep();
568 // Get current particle id (ipart), track position (pos) and momentum (mom)
569 if ( fStepSum[idvol]==0.0 ) gMC->TrackMomentum(fTrackMomentum);
570 fStepSum[idvol]+=gMC->TrackStep();
abaf7c9d 571
1391e633 572// if (GetDebug()) {
573// Info("StepManager Step","iChamber %d, Particle %d, theta %f phi %f mass %f StepSum %f eloss %g",
acc838fd 574// iChamber,ipart, fTrackMomentum.Theta()*kRaddeg, fTrackMomentum.Phi()*kRaddeg, mass, fStepSum[idvol], gMC->Edep());
1391e633 575// Info("StepManager Step","Track Momentum %f %f %f", fTrackMomentum.X(), fTrackMomentum.Y(), fTrackMomentum.Z()) ;
576// gMC->TrackPosition(fTrackPosition);
577// Info("StepManager Step","Track Position %f %f %f",fTrackPosition.X(),fTrackPosition.Y(),fTrackPosition.Z()) ;
d08aff2d 578// }
1391e633 579
580 // Track left chamber or StepSum larger than fStepMaxInActiveGas
581 if ( gMC->IsTrackExiting() ||
582 gMC->IsTrackStop() ||
583 gMC->IsTrackDisappeared()||
584 (fStepSum[idvol]>fStepMaxInActiveGas) ) {
585
586 if ( gMC->IsTrackExiting() ||
acc838fd 587 gMC->IsTrackStop() ||
588 gMC->IsTrackDisappeared() ) gMC->SetMaxStep(kBig);
1391e633 589
590 gMC->TrackPosition(fTrackPosition);
591 Float_t theta = fTrackMomentum.Theta();
592 Float_t phi = fTrackMomentum.Phi();
593
d7c4fbc4 594 TLorentzVector backToWire( fStepSum[idvol]/2.*sin(theta)*cos(phi),
acc838fd 595 fStepSum[idvol]/2.*sin(theta)*sin(phi),
596 fStepSum[idvol]/2.*cos(theta),0.0 );
1391e633 597 // if (GetDebug())
598 // Info("StepManager Exit","Track Position %f %f %f",fTrackPosition.X(),fTrackPosition.Y(),fTrackPosition.Z()) ;
599 // if (GetDebug())
d7c4fbc4 600 // Info("StepManager Exit ","Track backToWire %f %f %f",backToWire.X(),backToWire.Y(),backToWire.Z()) ;
601 fTrackPosition-=backToWire;
1391e633 602
603 //-------------- Angle effect
604 // Ratio between energy loss of particle and Mip as a function of BetaGamma of particle (Energy/Mass)
605
d7c4fbc4 606 Float_t BetaxGamma = fTrackMomentum.P()/mass;// pc/mc2
607 Float_t sigmaEffect10degrees;
608 Float_t sigmaEffectThetadegrees;
609 Float_t eLossParticleELossMip;
610 Float_t yAngleEffect=0.;
611 Float_t thetawires = TMath::Abs( TMath::ASin( TMath::Sin(TMath::Pi()-theta) * TMath::Sin(phi) ) );// We use Pi-theta because z is negative
612
374ebd7d 613
614 if (fAngleEffect){
d7c4fbc4 615 if ( (BetaxGamma >3.2) && (thetawires*kRaddeg<=15.) ) {
616 BetaxGamma=TMath::Log(BetaxGamma);
617 eLossParticleELossMip = fElossRatio->Eval(BetaxGamma);
1391e633 618 // 10 degrees is a reference for a model (arbitrary)
d7c4fbc4 619 sigmaEffect10degrees=fAngleEffect10->Eval(eLossParticleELossMip);// in micrometers
1391e633 620 // Angle with respect to the wires assuming that chambers are perpendicular to the z axis.
d7c4fbc4 621 sigmaEffectThetadegrees = sigmaEffect10degrees/fAngleEffectNorma->Eval(thetawires*kRaddeg); // For 5mm gap
1391e633 622 if ( (iChamber==1) || (iChamber==2) )
acc838fd 623 sigmaEffectThetadegrees/=(1.09833e+00+1.70000e-02*(thetawires*kRaddeg)); // The gap is different (4mm)
d7c4fbc4 624 yAngleEffect=1.e-04*gRandom->Gaus(0,sigmaEffectThetadegrees); // Error due to the angle effect in cm
1391e633 625 }
374ebd7d 626 }
1391e633 627
628 // One hit per chamber
5d12ce38 629 GetMUONData()->AddHit(fIshunt, gAlice->GetMCApp()->GetCurrentTrackNumber(), iChamber, ipart,
acc838fd 630 fTrackPosition.X(), fTrackPosition.Y()+yAngleEffect, fTrackPosition.Z(), 0.0,
631 fTrackMomentum.P(),theta, phi, fStepSum[idvol], fDestepSum[idvol],
632 fTrackPosition.X(),fTrackPosition.Y(),fTrackPosition.Z());
1391e633 633// if (GetDebug()){
634// Info("StepManager Exit","Particle exiting from chamber %d",iChamber);
635// Info("StepManager Exit","StepSum %f eloss geant %g ",fStepSum[idvol],fDestepSum[idvol]);
636// Info("StepManager Exit","Track Position %f %f %f",fTrackPosition.X(),fTrackPosition.Y(),fTrackPosition.Z()) ;
637// }
638 fStepSum[idvol] =0; // Reset for the next event
639 fDestepSum[idvol]=0; // Reset for the next event
640 }
abaf7c9d 641}
5f91c9e8 642
4ac9d21e 643//__________________________________________
c33d9661 644void AliMUONv1::StepManagerOld()
a9e2aefa 645{
d7c4fbc4 646 // Old Stepmanager for the chambers
a9e2aefa 647 Int_t copy, id;
acc838fd 648 static Int_t idvol =-1;
a9e2aefa 649 static Int_t vol[2];
650 Int_t ipart;
651 TLorentzVector pos;
652 TLorentzVector mom;
653 Float_t theta,phi;
654 Float_t destep, step;
abaf7c9d 655
d7c4fbc4 656 static Float_t sstep;
1e8fff9c 657 static Float_t eloss, eloss2, xhit, yhit, zhit, tof, tlength;
2eb55fab 658 const Float_t kBig = 1.e10;
a9e2aefa 659 static Float_t hits[15];
660
661 TClonesArray &lhits = *fHits;
662
663 //
a9e2aefa 664 //
665 // Only charged tracks
666 if( !(gMC->TrackCharge()) ) return;
667 //
668 // Only gas gap inside chamber
669 // Tag chambers and record hits when track enters
a9e2aefa 670 id=gMC->CurrentVolID(copy);
5f91c9e8 671 vol[0] = GetChamberId(id);
672 idvol = vol[0] -1;
673
674 if (idvol == -1) return;
675
a9e2aefa 676 //
677 // Get current particle id (ipart), track position (pos) and momentum (mom)
678 gMC->TrackPosition(pos);
679 gMC->TrackMomentum(mom);
680
681 ipart = gMC->TrackPid();
a9e2aefa 682
683 //
684 // momentum loss and steplength in last step
685 destep = gMC->Edep();
686 step = gMC->TrackStep();
abaf7c9d 687 // cout<<"------------"<<step<<endl;
a9e2aefa 688 //
689 // record hits when track enters ...
690 if( gMC->IsTrackEntering()) {
abaf7c9d 691
a9e2aefa 692 gMC->SetMaxStep(fMaxStepGas);
693 Double_t tc = mom[0]*mom[0]+mom[1]*mom[1];
694 Double_t rt = TMath::Sqrt(tc);
695 Double_t pmom = TMath::Sqrt(tc+mom[2]*mom[2]);
2eb55fab 696 Double_t tx = mom[0]/pmom;
697 Double_t ty = mom[1]/pmom;
698 Double_t tz = mom[2]/pmom;
699 Double_t s = ((AliMUONChamber*)(*fChambers)[idvol])
acc838fd 700 ->ResponseModel()
701 ->Pitch()/tz;
a9e2aefa 702 theta = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg;
703 phi = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
704 hits[0] = Float_t(ipart); // Geant3 particle type
2eb55fab 705 hits[1] = pos[0]+s*tx; // X-position for hit
706 hits[2] = pos[1]+s*ty; // Y-position for hit
707 hits[3] = pos[2]+s*tz; // Z-position for hit
a9e2aefa 708 hits[4] = theta; // theta angle of incidence
709 hits[5] = phi; // phi angle of incidence
ce3f5e87 710 hits[8] = 0;//PadHits does not exist anymore (Float_t) fNPadHits; // first padhit
a9e2aefa 711 hits[9] = -1; // last pad hit
2eb55fab 712 hits[10] = mom[3]; // hit momentum P
713 hits[11] = mom[0]; // Px
714 hits[12] = mom[1]; // Py
715 hits[13] = mom[2]; // Pz
a9e2aefa 716 tof=gMC->TrackTime();
2eb55fab 717 hits[14] = tof; // Time of flight
718 tlength = 0;
719 eloss = 0;
720 eloss2 = 0;
d7c4fbc4 721 sstep=0;
2eb55fab 722 xhit = pos[0];
723 yhit = pos[1];
724 zhit = pos[2];
681d067b 725 Chamber(idvol).ChargeCorrelationInit();
a9e2aefa 726 // Only if not trigger chamber
1e8fff9c 727
abaf7c9d 728// printf("---------------------------\n");
729// printf(">>>> Y = %f \n",hits[2]);
730// printf("---------------------------\n");
731
1e8fff9c 732
733
abaf7c9d 734 // if(idvol < AliMUONConstants::NTrackingCh()) {
acc838fd 735// //
736// // Initialize hit position (cursor) in the segmentation model
737// ((AliMUONChamber*) (*fChambers)[idvol])
738// ->SigGenInit(pos[0], pos[1], pos[2]);
abaf7c9d 739// } else {
acc838fd 740// //geant3->Gpcxyz();
741// //printf("In the Trigger Chamber #%d\n",idvol-9);
abaf7c9d 742// }
a9e2aefa 743 }
744 eloss2+=destep;
d7c4fbc4 745 sstep+=step;
abaf7c9d 746
d7c4fbc4 747 // cout<<sstep<<endl;
abaf7c9d 748
a9e2aefa 749 //
750 // Calculate the charge induced on a pad (disintegration) in case
751 //
752 // Mip left chamber ...
753 if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
754 gMC->SetMaxStep(kBig);
755 eloss += destep;
756 tlength += step;
757
802a864d 758 Float_t x0,y0,z0;
759 Float_t localPos[3];
760 Float_t globalPos[3] = {pos[0], pos[1], pos[2]};
802a864d 761 gMC->Gmtod(globalPos,localPos,1);
762
2eb55fab 763 if(idvol < AliMUONConstants::NTrackingCh()) {
a9e2aefa 764// tracking chambers
acc838fd 765 x0 = 0.5*(xhit+pos[0]);
766 y0 = 0.5*(yhit+pos[1]);
767 z0 = 0.5*(zhit+pos[2]);
a9e2aefa 768 } else {
769// trigger chambers
acc838fd 770 x0 = xhit;
771 y0 = yhit;
772 z0 = 0.;
a9e2aefa 773 }
774
1e8fff9c 775
ce3f5e87 776 // if (eloss >0) MakePadHits(x0,y0,z0,eloss,tof,idvol);
a9e2aefa 777
acc838fd 778
2eb55fab 779 hits[6] = tlength; // track length
780 hits[7] = eloss2; // de/dx energy loss
781
abaf7c9d 782
ce3f5e87 783 // if (fNPadHits > (Int_t)hits[8]) {
acc838fd 784 // hits[8] = hits[8]+1;
785 // hits[9] = 0: // PadHits does not exist anymore (Float_t) fNPadHits;
ce3f5e87 786 //}
2eb55fab 787//
788// new hit
789
a9e2aefa 790 new(lhits[fNhits++])
acc838fd 791 AliMUONHit(fIshunt, gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits);
a9e2aefa 792 eloss = 0;
793 //
794 // Check additional signal generation conditions
795 // defined by the segmentation
a75f073c 796 // model (boundary crossing conditions)
797 // only for tracking chambers
a9e2aefa 798 } else if
a75f073c 799 ((idvol < AliMUONConstants::NTrackingCh()) &&
800 ((AliMUONChamber*) (*fChambers)[idvol])->SigGenCond(pos[0], pos[1], pos[2]))
a9e2aefa 801 {
802 ((AliMUONChamber*) (*fChambers)[idvol])
acc838fd 803 ->SigGenInit(pos[0], pos[1], pos[2]);
802a864d 804
805 Float_t localPos[3];
806 Float_t globalPos[3] = {pos[0], pos[1], pos[2]};
807 gMC->Gmtod(globalPos,localPos,1);
808
e0f71fb7 809 eloss += destep;
802a864d 810
ce3f5e87 811 // if (eloss > 0 && idvol < AliMUONConstants::NTrackingCh())
acc838fd 812 // MakePadHits(0.5*(xhit+pos[0]),0.5*(yhit+pos[1]),pos[2],eloss,tof,idvol);
a9e2aefa 813 xhit = pos[0];
814 yhit = pos[1];
e0f71fb7 815 zhit = pos[2];
816 eloss = 0;
a9e2aefa 817 tlength += step ;
818 //
819 // nothing special happened, add up energy loss
820 } else {
821 eloss += destep;
822 tlength += step ;
823 }
824}