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Several changes (ring drawing, fiducial selection, etc.)
[u/mrichter/AliRoot.git] / RICH / AliRICHv1.cxx
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c28632f0 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15
16/*
17 $Log$
bef02574 18 Revision 1.3 2000/06/13 13:06:38 jbarbosa
19 Fixed compiling error for HP (multiple declaration)
20
7f36f6bc 21 Revision 1.2 2000/06/12 15:36:16 jbarbosa
22 Cleaned up version.
23
237c933d 24 Revision 1.1 2000/06/09 15:00:31 jbarbosa
25 New full version. All parameters configurable.
26
c28632f0 27 Revision 1.9 2000/05/31 08:19:38 jbarbosa
28 Fixed bug in StepManager
29
30 Revision 1.8 2000/05/26 17:30:08 jbarbosa
31 Cerenkov angle now stored within cerenkov data structure.
32
33 Revision 1.7 2000/05/18 10:31:36 jbarbosa
34 Fixed positioning of spacers inside freon.
35 Fixed positioning of proximity gap
36 inside methane.
37 Fixed cut on neutral particles in the StepManager.
38
39 Revision 1.6 2000/04/28 11:51:58 morsch
40 Dimensions of arrays hits and Ckov_data corrected.
41
42 Revision 1.5 2000/04/19 13:28:46 morsch
43 Major changes in geometry (parametrised), materials (updated) and
44 step manager (diagnostics) (JB, AM)
45
46*/
47
48
49
50//////////////////////////////////////////////////////////
51// Manager and hits classes for set: RICH full version //
52//////////////////////////////////////////////////////////
53
54#include <TTUBE.h>
55#include <TNode.h>
56#include <TRandom.h>
237c933d 57#include <TParticle.h>
c28632f0 58
59#include "AliRICHv1.h"
237c933d 60#include "AliRICHHit.h"
c28632f0 61#include "AliRun.h"
62#include "AliMC.h"
63#include "iostream.h"
64#include "AliCallf77.h"
65#include "AliConst.h"
66#include "AliPDG.h"
67#include "TGeant3.h"
68
69ClassImp(AliRICHv1)
70
71//___________________________________________
72AliRICHv1::AliRICHv1() : AliRICHv0()
73{
237c933d 74
75// Default constructor fo AliRICHvv1 (full version)
76
c28632f0 77 //fChambers = 0;
78}
79
80//___________________________________________
81AliRICHv1::AliRICHv1(const char *name, const char *title)
82 : AliRICHv0(name,title)
83{
c28632f0 84
237c933d 85// Full version of RICH with hits and diagnostics
86
87 fCkovNumber=0;
88 fFreonProd=0;
bef02574 89
237c933d 90 fChambers = new TObjArray(kNCH);
bef02574 91 for (Int_t i=0; i<kNCH; i++) {
c28632f0 92
93 (*fChambers)[i] = new AliRICHChamber();
94
95 }
96}
97
237c933d 98void AliRICHv1::Init()
99{
100
101 printf("*********************************** RICH_INIT ***********************************\n");
102 printf("* *\n");
103 printf("* AliRICHv1 Configurable version started *\n");
104 printf("* *\n");
105
106
107 AliRICHSegmentation* segmentation;
108 AliRICHGeometry* geometry;
109 AliRICHResponse* response;
110
111
112 //
113 // Initialize Tracking Chambers
114 //
bef02574 115 for (Int_t i=1; i<kNCH; i++) {
237c933d 116 //printf ("i:%d",i);
117 ( (AliRICHChamber*) (*fChambers)[i])->Init();
118 }
119
120 //
121 // Set the chamber (sensitive region) GEANT identifier
122
123 ((AliRICHChamber*)(*fChambers)[0])->SetGid(1);
124 ((AliRICHChamber*)(*fChambers)[1])->SetGid(2);
125 ((AliRICHChamber*)(*fChambers)[2])->SetGid(3);
126 ((AliRICHChamber*)(*fChambers)[3])->SetGid(4);
127 ((AliRICHChamber*)(*fChambers)[4])->SetGid(5);
128 ((AliRICHChamber*)(*fChambers)[5])->SetGid(6);
129 ((AliRICHChamber*)(*fChambers)[6])->SetGid(7);
130
131 Float_t pos1[3]={0,471.8999,165.2599};
132 Chamber(0).SetChamberTransform(pos1[0],pos1[1],pos1[2],new TRotMatrix("rot993","rot993",90,0,70.69,90,19.30999,-90));
133
134 Float_t pos2[3]={171,470,0};
135 Chamber(1).SetChamberTransform(pos2[0],pos2[1],pos2[2],new TRotMatrix("rot994","rot994",90,-20,90,70,0,0));
136
137 Float_t pos3[3]={0,500,0};
138 Chamber(2).SetChamberTransform(pos3[0],pos3[1],pos3[2],new TRotMatrix("rot995","rot995",90,0,90,90,0,0));
139
140 Float_t pos4[3]={-171,470,0};
141 Chamber(3).SetChamberTransform(pos4[0],pos4[1],pos4[2], new TRotMatrix("rot996","rot996",90,20,90,110,0,0));
142
143 Float_t pos5[3]={161.3999,443.3999,-165.3};
144 Chamber(4).SetChamberTransform(pos5[0],pos5[1],pos5[2],new TRotMatrix("rot997","rot997",90,340,108.1999,70,18.2,70));
145
146 Float_t pos6[3]={0., 471.9, -165.3,};
147 Chamber(5).SetChamberTransform(pos6[0],pos6[1],pos6[2],new TRotMatrix("rot998","rot998",90,0,109.3099,90,19.30999,90));
148
149 Float_t pos7[3]={-161.399,443.3999,-165.3};
150 Chamber(6).SetChamberTransform(pos7[0],pos7[1],pos7[2],new TRotMatrix("rot999","rot999",90,20,108.1999,110,18.2,110));
151
152 segmentation=Chamber(0).GetSegmentationModel(0);
153 geometry=Chamber(0).GetGeometryModel();
154 response=Chamber(0).GetResponseModel();
155
156
157 printf("* Pads : %3dx%3d *\n",segmentation->Npx(),segmentation->Npy());
158 printf("* Pad size : %5.2f x%5.2f mm2 *\n",segmentation->Dpx(),segmentation->Dpy());
159 printf("* Gap Thickness : %5.1f mm *\n",geometry->GetGapThickness());
160 printf("* Radiator Width : %5.1f mm *\n",geometry->GetQuartzWidth());
161 printf("* Radiator Length : %5.1f mm *\n",geometry->GetQuartzLength());
162 printf("* Freon Thickness : %5.1f mm *\n",geometry->GetFreonThickness());
163 printf("* Charge Slope : %5.1f ADC *\n",response->ChargeSlope());
164 printf("* Feedback Prob. : %5.2f %% *\n",response->AlphaFeedback());
165 printf("* *\n");
166 printf("* Success! *\n");
167 printf("* *\n");
168 printf("*********************************************************************************\n");
169
170}
c28632f0 171
172//___________________________________________
173void AliRICHv1::StepManager()
174{
237c933d 175
176// Full Step Manager
177
c28632f0 178 Int_t copy, id;
179 static Int_t idvol;
180 static Int_t vol[2];
181 Int_t ipart;
182 static Float_t hits[18];
237c933d 183 static Float_t ckovData[19];
184 TLorentzVector position;
185 TLorentzVector momentum;
c28632f0 186 Float_t pos[3];
187 Float_t mom[4];
237c933d 188 Float_t localPos[3];
189 Float_t localMom[4];
190 Float_t localTheta,localPhi;
c28632f0 191 Float_t theta,phi;
192 Float_t destep, step;
193 Float_t ranf[2];
237c933d 194 Int_t nPads;
c28632f0 195 Float_t coscerenkov;
196 static Float_t eloss, xhit, yhit, tlength;
237c933d 197 const Float_t kBig=1.e10;
c28632f0 198
199 TClonesArray &lhits = *fHits;
200 TGeant3 *geant3 = (TGeant3*) gMC;
201 TParticle *current = (TParticle*)(*gAlice->Particles())[gAlice->CurrentTrack()];
202
203 //if (current->Energy()>1)
204 //{
205
206 // Only gas gap inside chamber
207 // Tag chambers and record hits when track enters
208
209 idvol=-1;
210 id=gMC->CurrentVolID(copy);
237c933d 211 Float_t cherenkovLoss=0;
c28632f0 212 //gAlice->KeepTrack(gAlice->CurrentTrack());
213
237c933d 214 gMC->TrackPosition(position);
215 pos[0]=position(0);
216 pos[1]=position(1);
217 pos[2]=position(2);
218 ckovData[1] = pos[0]; // X-position for hit
219 ckovData[2] = pos[1]; // Y-position for hit
220 ckovData[3] = pos[2]; // Z-position for hit
221 //ckovData[11] = gAlice->CurrentTrack();
c28632f0 222
223 //AliRICH *RICH = (AliRICH *) gAlice->GetDetector("RICH");
224
225 /********************Store production parameters for Cerenkov photons************************/
226//is it a Cerenkov photon?
227 if (gMC->TrackPid() == 50000050) {
228
229 //if (gMC->VolId("GAP ")==gMC->CurrentVolID(copy))
230 //{
237c933d 231 Float_t ckovEnergy = current->Energy();
c28632f0 232 //energy interval for tracking
237c933d 233 if (ckovEnergy > 5.6e-09 && ckovEnergy < 7.8e-09 )
234 //if (ckovEnergy > 0)
c28632f0 235 {
236 if (gMC->IsTrackEntering()){ //is track entering?
237 if (gMC->VolId("FRE1")==gMC->CurrentVolID(copy) || gMC->VolId("FRE2")==gMC->CurrentVolID(copy))
238 { //is it in freo?
239 if (geant3->Gctrak()->nstep<1){ //is it the first step?
240 Int_t mother = current->GetFirstMother();
241
242 //printf("Second Mother:%d\n",current->GetSecondMother());
243
237c933d 244 ckovData[10] = mother;
245 ckovData[11] = gAlice->CurrentTrack();
246 ckovData[12] = 1; //Media where photon was produced 1->Freon, 2->Quarz
247 fCkovNumber++;
248 fFreonProd=1;
249 //printf("Index: %d\n",fCkovNumber);
c28632f0 250 } //first step question
251 } //freo question
252
253 if (geant3->Gctrak()->nstep<1){ //is it first step?
254 if (gMC->VolId("QUAR")==gMC->CurrentVolID(copy)) //is it in quarz?
255 {
237c933d 256 ckovData[12] = 2;
c28632f0 257 } //quarz question
258 } //first step question
259
237c933d 260 //printf("Before %d\n",fFreonProd);
c28632f0 261 } //track entering question
262
237c933d 263 if (ckovData[12] == 1) //was it produced in Freon?
264 //if (fFreonProd == 1)
c28632f0 265 {
266 if (gMC->IsTrackEntering()){ //is track entering?
267 //printf("Got in");
268 if (gMC->VolId("META")==gMC->CurrentVolID(copy)) //is it in gap?
269 {
270 //printf("Got in\n");
237c933d 271 gMC->TrackMomentum(momentum);
272 mom[0]=momentum(0);
273 mom[1]=momentum(1);
274 mom[2]=momentum(2);
275 mom[3]=momentum(3);
c28632f0 276 // Z-position for hit
277
278
279 /**************** Photons lost in second grid have to be calculated by hand************/
280
281 Float_t cophi = TMath::Cos(TMath::ATan2(mom[0], mom[1]));
282 Float_t t = (1. - .025 / cophi) * (1. - .05 / cophi);
283 gMC->Rndm(ranf, 1);
284 //printf("grid calculation:%f\n",t);
285 if (ranf[0] > t) {
286 //geant3->StopTrack();
237c933d 287 ckovData[13] = 5;
288 AddCerenkov(gAlice->CurrentTrack(),vol,ckovData);
c28632f0 289 //printf("Lost one in grid\n");
290 }
291 /**********************************************************************************/
292 } //gap
293
294 if (gMC->VolId("CSI ")==gMC->CurrentVolID(copy)) //is it in csi?
295 {
237c933d 296 gMC->TrackMomentum(momentum);
297 mom[0]=momentum(0);
298 mom[1]=momentum(1);
299 mom[2]=momentum(2);
300 mom[3]=momentum(3);
c28632f0 301
302 /********* Photons lost by Fresnel reflection have to be calculated by hand********/
303 /***********************Cerenkov phtons (always polarised)*************************/
304
305 Float_t cophi = TMath::Cos(TMath::ATan2(mom[0], mom[1]));
237c933d 306 Float_t t = Fresnel(ckovEnergy*1e9,cophi,1);
c28632f0 307 gMC->Rndm(ranf, 1);
308 if (ranf[0] < t) {
309 //geant3->StopTrack();
237c933d 310 ckovData[13] = 6;
311 AddCerenkov(gAlice->CurrentTrack(),vol,ckovData);
c28632f0 312 //printf("Lost by Fresnel\n");
313 }
314 /**********************************************************************************/
315 }
316 } //track entering?
317
318
319 /********************Evaluation of losses************************/
320 /******************still in the old fashion**********************/
321
322 Int_t i1 = geant3->Gctrak()->nmec; //number of physics mechanisms acting on the particle
323 for (Int_t i = 0; i < i1; ++i) {
324 // Reflection loss
325 if (geant3->Gctrak()->lmec[i] == 106) { //was it reflected
237c933d 326 ckovData[13]=10;
c28632f0 327 if (gMC->VolId("FRE1")==gMC->CurrentVolID(copy) || gMC->VolId("FRE2")==gMC->CurrentVolID(copy))
237c933d 328 ckovData[13]=1;
c28632f0 329 if (gMC->CurrentVolID(copy) == gMC->VolId("QUAR"))
237c933d 330 ckovData[13]=2;
c28632f0 331 //geant3->StopTrack();
237c933d 332 AddCerenkov(gAlice->CurrentTrack(),vol,ckovData);
c28632f0 333 } //reflection question
334
335
336 // Absorption loss
337 else if (geant3->Gctrak()->lmec[i] == 101) { //was it absorbed?
237c933d 338 ckovData[13]=20;
c28632f0 339 if (gMC->VolId("FRE1")==gMC->CurrentVolID(copy) || gMC->VolId("FRE2")==gMC->CurrentVolID(copy))
237c933d 340 ckovData[13]=11;
c28632f0 341 if (gMC->CurrentVolID(copy) == gMC->VolId("QUAR"))
237c933d 342 ckovData[13]=12;
c28632f0 343 if (gMC->CurrentVolID(copy) == gMC->VolId("META"))
237c933d 344 ckovData[13]=13;
c28632f0 345 if (gMC->CurrentVolID(copy) == gMC->VolId("GAP "))
237c933d 346 ckovData[13]=13;
c28632f0 347
348 if (gMC->CurrentVolID(copy) == gMC->VolId("SRIC"))
237c933d 349 ckovData[13]=15;
c28632f0 350
351 // CsI inefficiency
352 if (gMC->CurrentVolID(copy) == gMC->VolId("CSI ")) {
237c933d 353 ckovData[13]=16;
c28632f0 354 }
355 //geant3->StopTrack();
237c933d 356 AddCerenkov(gAlice->CurrentTrack(),vol,ckovData);
357 //printf("Added cerenkov %d\n",fCkovNumber);
c28632f0 358 } //absorption question
359
360
361 // Photon goes out of tracking scope
362 else if (geant3->Gctrak()->lmec[i] == 30) { //is it below energy treshold?
237c933d 363 ckovData[13]=21;
c28632f0 364 //geant3->StopTrack();
237c933d 365 AddCerenkov(gAlice->CurrentTrack(),vol,ckovData);
c28632f0 366 } // energy treshold question
367 } //number of mechanisms cycle
368 /**********************End of evaluation************************/
369 } //freon production question
370 } //energy interval question
371 //}//inside the proximity gap question
372 } //cerenkov photon question
373
374 /**************************************End of Production Parameters Storing*********************/
375
376
377 /*******************************Treat photons that hit the CsI (Ckovs and Feedbacks)************/
378
379 if (gMC->TrackPid() == 50000050 || gMC->TrackPid() == 50000051) {
380 //printf("Cerenkov\n");
381 if (gMC->VolId("CSI ")==gMC->CurrentVolID(copy))
382 {
383
384 if (gMC->Edep() > 0.){
237c933d 385 gMC->TrackPosition(position);
386 gMC->TrackMomentum(momentum);
387 pos[0]=position(0);
388 pos[1]=position(1);
389 pos[2]=position(2);
390 mom[0]=momentum(0);
391 mom[1]=momentum(1);
392 mom[2]=momentum(2);
393 mom[3]=momentum(3);
c28632f0 394 Double_t tc = mom[0]*mom[0]+mom[1]*mom[1];
395 Double_t rt = TMath::Sqrt(tc);
396 theta = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg;
397 phi = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
237c933d 398 gMC->Gmtod(pos,localPos,1);
399 gMC->Gmtod(mom,localMom,2);
c28632f0 400
401 gMC->CurrentVolOffID(2,copy);
402 vol[0]=copy;
403 idvol=vol[0]-1;
404
405 //Int_t sector=((AliRICHChamber*) (*fChambers)[idvol])
237c933d 406 //->Sector(localPos[0], localPos[2]);
c28632f0 407 //printf("Sector:%d\n",sector);
408
409 /*if (gMC->TrackPid() == 50000051){
410 fFeedbacks++;
411 printf("Feedbacks:%d\n",fFeedbacks);
412 }*/
413
414 ((AliRICHChamber*) (*fChambers)[idvol])
237c933d 415 ->SigGenInit(localPos[0], localPos[2], localPos[1]);
416 if(idvol<kNCH) {
417 ckovData[0] = gMC->TrackPid(); // particle type
418 ckovData[1] = pos[0]; // X-position for hit
419 ckovData[2] = pos[1]; // Y-position for hit
420 ckovData[3] = pos[2]; // Z-position for hit
421 ckovData[4] = theta; // theta angle of incidence
422 ckovData[5] = phi; // phi angle of incidence
423 ckovData[8] = (Float_t) fNPadHits; // first padhit
424 ckovData[9] = -1; // last pad hit
425 ckovData[13] = 4; // photon was detected
426 ckovData[14] = mom[0];
427 ckovData[15] = mom[1];
428 ckovData[16] = mom[2];
c28632f0 429
430 destep = gMC->Edep();
237c933d 431 gMC->SetMaxStep(kBig);
432 cherenkovLoss += destep;
433 ckovData[7]=cherenkovLoss;
c28632f0 434
237c933d 435 nPads = MakePadHits(localPos[0],localPos[2],cherenkovLoss,idvol,kCerenkov);
436 if (fNPadHits > (Int_t)ckovData[8]) {
437 ckovData[8]= ckovData[8]+1;
438 ckovData[9]= (Float_t) fNPadHits;
c28632f0 439 }
440
237c933d 441 ckovData[17] = nPads;
442 //printf("nPads:%d",nPads);
c28632f0 443
444 //TClonesArray *Hits = RICH->Hits();
445 AliRICHHit *mipHit = (AliRICHHit*) (fHits->UncheckedAt(0));
446 if (mipHit)
447 {
448 mom[0] = current->Px();
449 mom[1] = current->Py();
450 mom[2] = current->Pz();
237c933d 451 Float_t mipPx = mipHit->fMomX;
452 Float_t mipPy = mipHit->fMomY;
453 Float_t mipPz = mipHit->fMomZ;
c28632f0 454
455 Float_t r = mom[0]*mom[0] + mom[1]*mom[1] + mom[2]*mom[2];
456 Float_t rt = TMath::Sqrt(r);
237c933d 457 Float_t mipR = mipPx*mipPx + mipPy*mipPy + mipPz*mipPz;
458 Float_t mipRt = TMath::Sqrt(mipR);
459 if ((rt*mipRt) > 0)
c28632f0 460 {
237c933d 461 coscerenkov = (mom[0]*mipPx + mom[1]*mipPy + mom[2]*mipPz)/(rt*mipRt);
c28632f0 462 }
463 else
464 {
465 coscerenkov = 0;
466 }
467 Float_t cherenkov = TMath::ACos(coscerenkov);
237c933d 468 ckovData[18]=cherenkov;
c28632f0 469 }
470 //if (sector != -1)
471 //{
237c933d 472 AddHit(gAlice->CurrentTrack(),vol,ckovData);
473 AddCerenkov(gAlice->CurrentTrack(),vol,ckovData);
c28632f0 474 //}
475 }
476 }
477 }
478 }
479
480 /***********************************************End of photon hits*********************************************/
481
482
483 /**********************************************Charged particles treatment*************************************/
484
485 else if (gMC->TrackCharge())
486 //else if (1 == 1)
487 {
488//If MIP
489 /*if (gMC->IsTrackEntering())
490 {
491 hits[13]=20;//is track entering?
492 }*/
493 if (gMC->VolId("FRE1")==gMC->CurrentVolID(copy) || gMC->VolId("FRE2")==gMC->CurrentVolID(copy))
494 {
237c933d 495 fFreonProd=1;
c28632f0 496 }
497
498 if (gMC->VolId("GAP ")== gMC->CurrentVolID(copy)) {
499// Get current particle id (ipart), track position (pos) and momentum (mom)
500
501 gMC->CurrentVolOffID(3,copy);
502 vol[0]=copy;
503 idvol=vol[0]-1;
504
505 //Int_t sector=((AliRICHChamber*) (*fChambers)[idvol])
237c933d 506 //->Sector(localPos[0], localPos[2]);
c28632f0 507 //printf("Sector:%d\n",sector);
508
237c933d 509 gMC->TrackPosition(position);
510 gMC->TrackMomentum(momentum);
511 pos[0]=position(0);
512 pos[1]=position(1);
513 pos[2]=position(2);
514 mom[0]=momentum(0);
515 mom[1]=momentum(1);
516 mom[2]=momentum(2);
517 mom[3]=momentum(3);
518 gMC->Gmtod(pos,localPos,1);
519 gMC->Gmtod(mom,localMom,2);
c28632f0 520
521 ipart = gMC->TrackPid();
522 //
523 // momentum loss and steplength in last step
524 destep = gMC->Edep();
525 step = gMC->TrackStep();
526
527 //
528 // record hits when track enters ...
529 if( gMC->IsTrackEntering()) {
530// gMC->SetMaxStep(fMaxStepGas);
531 Double_t tc = mom[0]*mom[0]+mom[1]*mom[1];
532 Double_t rt = TMath::Sqrt(tc);
533 theta = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg;
534 phi = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
535
536
237c933d 537 Double_t localTc = localMom[0]*localMom[0]+localMom[2]*localMom[2];
538 Double_t localRt = TMath::Sqrt(localTc);
539 localTheta = Float_t(TMath::ATan2(localRt,Double_t(localMom[1])))*kRaddeg;
540 localPhi = Float_t(TMath::ATan2(Double_t(localMom[2]),Double_t(localMom[0])))*kRaddeg;
c28632f0 541
542 hits[0] = Float_t(ipart); // particle type
237c933d 543 hits[1] = localPos[0]; // X-position for hit
544 hits[2] = localPos[1]; // Y-position for hit
545 hits[3] = localPos[2]; // Z-position for hit
546 hits[4] = localTheta; // theta angle of incidence
547 hits[5] = localPhi; // phi angle of incidence
c28632f0 548 hits[8] = (Float_t) fNPadHits; // first padhit
549 hits[9] = -1; // last pad hit
237c933d 550 hits[13] = fFreonProd; // did id hit the freon?
c28632f0 551 hits[14] = mom[0];
552 hits[15] = mom[1];
553 hits[16] = mom[2];
554
555 tlength = 0;
556 eloss = 0;
237c933d 557 fFreonProd = 0;
c28632f0 558
237c933d 559 Chamber(idvol).LocaltoGlobal(localPos,hits+1);
c28632f0 560
561
237c933d 562 //To make chamber coordinates x-y had to pass localPos[0], localPos[2]
563 xhit = localPos[0];
564 yhit = localPos[2];
c28632f0 565 // Only if not trigger chamber
237c933d 566 if(idvol<kNCH) {
c28632f0 567 //
568 // Initialize hit position (cursor) in the segmentation model
569 ((AliRICHChamber*) (*fChambers)[idvol])
237c933d 570 ->SigGenInit(localPos[0], localPos[2], localPos[1]);
c28632f0 571 }
572 }
573
574 //
575 // Calculate the charge induced on a pad (disintegration) in case
576 //
577 // Mip left chamber ...
578 if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
237c933d 579 gMC->SetMaxStep(kBig);
c28632f0 580 eloss += destep;
581 tlength += step;
582
583
584 // Only if not trigger chamber
237c933d 585 if(idvol<kNCH) {
c28632f0 586 if (eloss > 0)
587 {
588 if(gMC->TrackPid() == kNeutron)
589 printf("\n\n\n\n\n Neutron Making Pad Hit!!! \n\n\n\n");
237c933d 590 nPads = MakePadHits(xhit,yhit,eloss,idvol,kMip);
591 hits[17] = nPads;
592 //printf("nPads:%d",nPads);
c28632f0 593 }
594 }
595
596 hits[6]=tlength;
597 hits[7]=eloss;
598 if (fNPadHits > (Int_t)hits[8]) {
599 hits[8]= hits[8]+1;
600 hits[9]= (Float_t) fNPadHits;
601 }
602
603 //if(sector !=-1)
604 new(lhits[fNhits++]) AliRICHHit(fIshunt,gAlice->CurrentTrack(),vol,hits);
605 eloss = 0;
606 //
607 // Check additional signal generation conditions
608 // defined by the segmentation
609 // model (boundary crossing conditions)
610 } else if
611 (((AliRICHChamber*) (*fChambers)[idvol])
237c933d 612 ->SigGenCond(localPos[0], localPos[2], localPos[1]))
c28632f0 613 {
614 ((AliRICHChamber*) (*fChambers)[idvol])
237c933d 615 ->SigGenInit(localPos[0], localPos[2], localPos[1]);
c28632f0 616 if (eloss > 0)
617 {
618 if(gMC->TrackPid() == kNeutron)
619 printf("\n\n\n\n\n Neutron Making Pad Hit!!! \n\n\n\n");
237c933d 620 nPads = MakePadHits(xhit,yhit,eloss,idvol,kMip);
621 hits[17] = nPads;
c28632f0 622 //printf("Npads:%d",NPads);
623 }
237c933d 624 xhit = localPos[0];
625 yhit = localPos[2];
c28632f0 626 eloss = destep;
627 tlength += step ;
628 //
629 // nothing special happened, add up energy loss
630 } else {
631 eloss += destep;
632 tlength += step ;
633 }
634 }
635 }
636 /*************************************************End of MIP treatment**************************************/
637 //}
638}