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4c039060 | 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 | $Log$ | |
94de3818 | 18 | Revision 1.22 2000/07/10 20:57:39 hristov |
19 | Update of TPC code and macros by M.Kowalski | |
20 | ||
73042f01 | 21 | Revision 1.19.2.4 2000/06/26 07:39:42 kowal2 |
22 | Changes to obey the coding rules | |
23 | ||
24 | Revision 1.19.2.3 2000/06/25 08:38:41 kowal2 | |
25 | Splitted from AliTPCtracking | |
26 | ||
27 | Revision 1.19.2.2 2000/06/16 12:59:28 kowal2 | |
28 | Changed parameter settings | |
29 | ||
30 | Revision 1.19.2.1 2000/06/09 07:15:07 kowal2 | |
31 | ||
32 | Defaults loaded automatically (hard-wired) | |
33 | Optional parameters can be set via macro called in the constructor | |
34 | ||
35 | Revision 1.19 2000/04/18 19:00:59 fca | |
36 | Small bug fixes to TPC files | |
37 | ||
4d68a14a | 38 | Revision 1.18 2000/04/17 09:37:33 kowal2 |
39 | removed obsolete AliTPCDigitsDisplay.C | |
40 | ||
cc80f89e | 41 | Revision 1.17.2.2 2000/04/10 08:15:12 kowal2 |
42 | ||
43 | New, experimental data structure from M. Ivanov | |
44 | New tracking algorithm | |
45 | Different pad geometry for different sectors | |
46 | Digitization rewritten | |
47 | ||
48 | Revision 1.17.2.1 2000/04/10 07:56:53 kowal2 | |
49 | Not used anymore - removed | |
50 | ||
51 | Revision 1.17 2000/01/19 17:17:30 fca | |
52 | Introducing a list of lists of hits -- more hits allowed for detector now | |
53 | ||
1cedd08a | 54 | Revision 1.16 1999/11/05 09:29:23 fca |
55 | Accept only signals > 0 | |
56 | ||
921bf71a | 57 | Revision 1.15 1999/10/08 06:26:53 fca |
58 | Removed ClustersIndex - not used anymore | |
59 | ||
e674b993 | 60 | Revision 1.14 1999/09/29 09:24:33 fca |
61 | Introduction of the Copyright and cvs Log | |
62 | ||
4c039060 | 63 | */ |
64 | ||
fe4da5cc | 65 | /////////////////////////////////////////////////////////////////////////////// |
66 | // // | |
67 | // Time Projection Chamber // | |
68 | // This class contains the basic functions for the Time Projection Chamber // | |
69 | // detector. Functions specific to one particular geometry are // | |
70 | // contained in the derived classes // | |
71 | // // | |
72 | //Begin_Html | |
73 | /* | |
1439f98e | 74 | <img src="picts/AliTPCClass.gif"> |
fe4da5cc | 75 | */ |
76 | //End_Html | |
77 | // // | |
8c555625 | 78 | // // |
fe4da5cc | 79 | /////////////////////////////////////////////////////////////////////////////// |
80 | ||
73042f01 | 81 | // |
82 | ||
fe4da5cc | 83 | #include <TMath.h> |
84 | #include <TRandom.h> | |
85 | #include <TVector.h> | |
8c555625 | 86 | #include <TMatrix.h> |
fe4da5cc | 87 | #include <TGeometry.h> |
88 | #include <TNode.h> | |
89 | #include <TTUBS.h> | |
90 | #include <TObjectTable.h> | |
1578254f | 91 | #include "TParticle.h" |
fe4da5cc | 92 | #include "AliTPC.h" |
73042f01 | 93 | #include <TFile.h> |
fe4da5cc | 94 | #include "AliRun.h" |
95 | #include <iostream.h> | |
96 | #include <fstream.h> | |
97 | #include "AliMC.h" | |
94de3818 | 98 | #include "AliMagF.h" |
fe4da5cc | 99 | |
cc80f89e | 100 | |
73042f01 | 101 | #include "AliTPCParamSR.h" |
8c555625 | 102 | #include "AliTPCPRF2D.h" |
103 | #include "AliTPCRF1D.h" | |
cc80f89e | 104 | #include "AliDigits.h" |
105 | #include "AliSimDigits.h" | |
106 | ||
107 | #include "AliTPCDigitsArray.h" | |
108 | #include "AliCluster.h" | |
109 | #include "AliClusters.h" | |
110 | #include "AliTPCClustersRow.h" | |
111 | #include "AliTPCClustersArray.h" | |
8c555625 | 112 | |
73042f01 | 113 | #include "AliTPCcluster.h" |
114 | #include "AliTPCclusterer.h" | |
115 | #include "AliTPCtracker.h" | |
8c555625 | 116 | |
73042f01 | 117 | #include <TInterpreter.h> |
1283eee5 | 118 | |
fe4da5cc | 119 | ClassImp(AliTPC) |
120 | ||
121 | //_____________________________________________________________________________ | |
122 | AliTPC::AliTPC() | |
123 | { | |
124 | // | |
125 | // Default constructor | |
126 | // | |
127 | fIshunt = 0; | |
fe4da5cc | 128 | fHits = 0; |
129 | fDigits = 0; | |
fe4da5cc | 130 | fNsectors = 0; |
cc80f89e | 131 | //MI changes |
132 | fDigitsArray = 0; | |
133 | fClustersArray = 0; | |
73042f01 | 134 | fTPCParam=0; |
fe4da5cc | 135 | } |
136 | ||
137 | //_____________________________________________________________________________ | |
138 | AliTPC::AliTPC(const char *name, const char *title) | |
139 | : AliDetector(name,title) | |
140 | { | |
141 | // | |
142 | // Standard constructor | |
143 | // | |
144 | ||
145 | // | |
146 | // Initialise arrays of hits and digits | |
147 | fHits = new TClonesArray("AliTPChit", 176); | |
4d68a14a | 148 | gAlice->AddHitList(fHits); |
cc80f89e | 149 | //MI change |
150 | fDigitsArray = 0; | |
151 | fClustersArray= 0; | |
fe4da5cc | 152 | // |
153 | // Initialise counters | |
cc80f89e | 154 | fNsectors = 0; |
cc80f89e | 155 | |
fe4da5cc | 156 | // |
157 | fIshunt = 0; | |
158 | // | |
159 | // Initialise color attributes | |
160 | SetMarkerColor(kYellow); | |
73042f01 | 161 | |
162 | // | |
163 | // Set TPC parameters | |
164 | // | |
165 | ||
166 | if (!strcmp(title,"Default")) { | |
167 | fTPCParam = new AliTPCParamSR; | |
168 | } else { | |
169 | cerr<<"AliTPC warning: in Config.C you must set non-default parameters\n"; | |
170 | fTPCParam=0; | |
171 | } | |
172 | ||
fe4da5cc | 173 | } |
174 | ||
175 | //_____________________________________________________________________________ | |
176 | AliTPC::~AliTPC() | |
177 | { | |
178 | // | |
179 | // TPC destructor | |
180 | // | |
73042f01 | 181 | |
fe4da5cc | 182 | fIshunt = 0; |
183 | delete fHits; | |
184 | delete fDigits; | |
73042f01 | 185 | delete fTPCParam; |
fe4da5cc | 186 | } |
187 | ||
fe4da5cc | 188 | //_____________________________________________________________________________ |
189 | void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits) | |
190 | { | |
191 | // | |
192 | // Add a hit to the list | |
193 | // | |
194 | TClonesArray &lhits = *fHits; | |
195 | new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits); | |
196 | } | |
197 | ||
fe4da5cc | 198 | //_____________________________________________________________________________ |
199 | void AliTPC::BuildGeometry() | |
200 | { | |
cc80f89e | 201 | |
fe4da5cc | 202 | // |
203 | // Build TPC ROOT TNode geometry for the event display | |
204 | // | |
73042f01 | 205 | TNode *nNode, *nTop; |
fe4da5cc | 206 | TTUBS *tubs; |
207 | Int_t i; | |
208 | const int kColorTPC=19; | |
1283eee5 | 209 | char name[5], title[25]; |
fe4da5cc | 210 | const Double_t kDegrad=TMath::Pi()/180; |
1283eee5 | 211 | const Double_t kRaddeg=180./TMath::Pi(); |
212 | ||
1283eee5 | 213 | |
73042f01 | 214 | Float_t innerOpenAngle = fTPCParam->GetInnerAngle(); |
215 | Float_t outerOpenAngle = fTPCParam->GetOuterAngle(); | |
1283eee5 | 216 | |
73042f01 | 217 | Float_t innerAngleShift = fTPCParam->GetInnerAngleShift(); |
218 | Float_t outerAngleShift = fTPCParam->GetOuterAngleShift(); | |
1283eee5 | 219 | |
220 | Int_t nLo = fTPCParam->GetNInnerSector()/2; | |
221 | Int_t nHi = fTPCParam->GetNOuterSector()/2; | |
222 | ||
73042f01 | 223 | const Double_t kloAng = (Double_t)TMath::Nint(innerOpenAngle*kRaddeg); |
224 | const Double_t khiAng = (Double_t)TMath::Nint(outerOpenAngle*kRaddeg); | |
225 | const Double_t kloAngSh = (Double_t)TMath::Nint(innerAngleShift*kRaddeg); | |
226 | const Double_t khiAngSh = (Double_t)TMath::Nint(outerAngleShift*kRaddeg); | |
1283eee5 | 227 | |
228 | ||
73042f01 | 229 | const Double_t kloCorr = 1/TMath::Cos(0.5*kloAng*kDegrad); |
230 | const Double_t khiCorr = 1/TMath::Cos(0.5*khiAng*kDegrad); | |
1283eee5 | 231 | |
232 | Double_t rl,ru; | |
233 | ||
234 | ||
fe4da5cc | 235 | // |
236 | // Get ALICE top node | |
fe4da5cc | 237 | // |
1283eee5 | 238 | |
73042f01 | 239 | nTop=gAlice->GetGeometry()->GetNode("alice"); |
1283eee5 | 240 | |
241 | // inner sectors | |
242 | ||
cc80f89e | 243 | rl = fTPCParam->GetInnerRadiusLow(); |
244 | ru = fTPCParam->GetInnerRadiusUp(); | |
1283eee5 | 245 | |
246 | ||
fe4da5cc | 247 | for(i=0;i<nLo;i++) { |
248 | sprintf(name,"LS%2.2d",i); | |
1283eee5 | 249 | name[4]='\0'; |
250 | sprintf(title,"TPC low sector %3d",i); | |
251 | title[24]='\0'; | |
252 | ||
73042f01 | 253 | tubs = new TTUBS(name,title,"void",rl*kloCorr,ru*kloCorr,250., |
254 | kloAng*(i-0.5)+kloAngSh,kloAng*(i+0.5)+kloAngSh); | |
fe4da5cc | 255 | tubs->SetNumberOfDivisions(1); |
73042f01 | 256 | nTop->cd(); |
257 | nNode = new TNode(name,title,name,0,0,0,""); | |
258 | nNode->SetLineColor(kColorTPC); | |
259 | fNodes->Add(nNode); | |
fe4da5cc | 260 | } |
1283eee5 | 261 | |
fe4da5cc | 262 | // Outer sectors |
1283eee5 | 263 | |
cc80f89e | 264 | rl = fTPCParam->GetOuterRadiusLow(); |
265 | ru = fTPCParam->GetOuterRadiusUp(); | |
1283eee5 | 266 | |
fe4da5cc | 267 | for(i=0;i<nHi;i++) { |
268 | sprintf(name,"US%2.2d",i); | |
1283eee5 | 269 | name[4]='\0'; |
fe4da5cc | 270 | sprintf(title,"TPC upper sector %d",i); |
1283eee5 | 271 | title[24]='\0'; |
73042f01 | 272 | tubs = new TTUBS(name,title,"void",rl*khiCorr,ru*khiCorr,250, |
273 | khiAng*(i-0.5)+khiAngSh,khiAng*(i+0.5)+khiAngSh); | |
fe4da5cc | 274 | tubs->SetNumberOfDivisions(1); |
73042f01 | 275 | nTop->cd(); |
276 | nNode = new TNode(name,title,name,0,0,0,""); | |
277 | nNode->SetLineColor(kColorTPC); | |
278 | fNodes->Add(nNode); | |
fe4da5cc | 279 | } |
cc80f89e | 280 | |
73042f01 | 281 | } |
1283eee5 | 282 | |
fe4da5cc | 283 | //_____________________________________________________________________________ |
284 | Int_t AliTPC::DistancetoPrimitive(Int_t , Int_t ) | |
285 | { | |
286 | // | |
287 | // Calculate distance from TPC to mouse on the display | |
288 | // Dummy procedure | |
289 | // | |
290 | return 9999; | |
291 | } | |
292 | ||
73042f01 | 293 | void AliTPC::Clusters2Tracks(TFile *of) { |
3c0f9266 | 294 | //----------------------------------------------------------------- |
295 | // This is a track finder. | |
3c0f9266 | 296 | //----------------------------------------------------------------- |
73042f01 | 297 | AliTPCtracker::Clusters2Tracks(fTPCParam,of); |
fe4da5cc | 298 | } |
299 | ||
300 | //_____________________________________________________________________________ | |
301 | void AliTPC::CreateMaterials() | |
302 | { | |
8c555625 | 303 | //----------------------------------------------- |
37831078 | 304 | // Create Materials for for TPC simulations |
8c555625 | 305 | //----------------------------------------------- |
306 | ||
307 | //----------------------------------------------------------------- | |
308 | // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl | |
309 | //----------------------------------------------------------------- | |
1283eee5 | 310 | |
73042f01 | 311 | Int_t iSXFLD=gAlice->Field()->Integ(); |
312 | Float_t sXMGMX=gAlice->Field()->Max(); | |
1283eee5 | 313 | |
314 | Float_t amat[5]; // atomic numbers | |
315 | Float_t zmat[5]; // z | |
316 | Float_t wmat[5]; // proportions | |
317 | ||
318 | Float_t density; | |
37831078 | 319 | Float_t apure[2]; |
1283eee5 | 320 | |
1283eee5 | 321 | |
37831078 | 322 | //***************** Gases ************************* |
323 | ||
324 | //------------------------------------------------- | |
1283eee5 | 325 | // pure gases |
37831078 | 326 | //------------------------------------------------- |
1283eee5 | 327 | |
37831078 | 328 | // Neon |
1283eee5 | 329 | |
330 | ||
37831078 | 331 | amat[0]= 20.18; |
332 | zmat[0]= 10.; | |
1283eee5 | 333 | density = 0.0009; |
37831078 | 334 | |
335 | apure[0]=amat[0]; | |
1283eee5 | 336 | |
37831078 | 337 | AliMaterial(20,"Ne",amat[0],zmat[0],density,999.,999.); |
1283eee5 | 338 | |
37831078 | 339 | // Argon |
1283eee5 | 340 | |
37831078 | 341 | amat[0]= 39.948; |
342 | zmat[0]= 18.; | |
343 | density = 0.001782; | |
1283eee5 | 344 | |
37831078 | 345 | apure[1]=amat[0]; |
1283eee5 | 346 | |
37831078 | 347 | AliMaterial(21,"Ar",amat[0],zmat[0],density,999.,999.); |
348 | ||
1283eee5 | 349 | |
350 | //-------------------------------------------------------------- | |
351 | // gases - compounds | |
352 | //-------------------------------------------------------------- | |
353 | ||
354 | Float_t amol[3]; | |
355 | ||
37831078 | 356 | // CO2 |
1283eee5 | 357 | |
358 | amat[0]=12.011; | |
359 | amat[1]=15.9994; | |
360 | ||
361 | zmat[0]=6.; | |
362 | zmat[1]=8.; | |
363 | ||
364 | wmat[0]=1.; | |
365 | wmat[1]=2.; | |
366 | ||
367 | density=0.001977; | |
368 | ||
369 | amol[0] = amat[0]*wmat[0]+amat[1]*wmat[1]; | |
370 | ||
371 | AliMixture(10,"CO2",amat,zmat,density,-2,wmat); | |
37831078 | 372 | |
1283eee5 | 373 | // CF4 |
374 | ||
375 | amat[0]=12.011; | |
376 | amat[1]=18.998; | |
377 | ||
378 | zmat[0]=6.; | |
379 | zmat[1]=9.; | |
380 | ||
381 | wmat[0]=1.; | |
382 | wmat[1]=4.; | |
383 | ||
384 | density=0.003034; | |
385 | ||
386 | amol[1] = amat[0]*wmat[0]+amat[1]*wmat[1]; | |
387 | ||
388 | AliMixture(11,"CF4",amat,zmat,density,-2,wmat); | |
389 | ||
37831078 | 390 | |
1283eee5 | 391 | // CH4 |
392 | ||
393 | amat[0]=12.011; | |
394 | amat[1]=1.; | |
395 | ||
396 | zmat[0]=6.; | |
397 | zmat[1]=1.; | |
398 | ||
399 | wmat[0]=1.; | |
400 | wmat[1]=4.; | |
401 | ||
402 | density=0.000717; | |
403 | ||
404 | amol[2] = amat[0]*wmat[0]+amat[1]*wmat[1]; | |
405 | ||
406 | AliMixture(12,"CH4",amat,zmat,density,-2,wmat); | |
407 | ||
408 | //---------------------------------------------------------------- | |
409 | // gases - mixtures, ID >= 20 pure gases, <= 10 ID < 20 -compounds | |
410 | //---------------------------------------------------------------- | |
37831078 | 411 | |
412 | char namate[21]; | |
1283eee5 | 413 | density = 0.; |
414 | Float_t am=0; | |
415 | Int_t nc; | |
37831078 | 416 | Float_t rho,absl,X0,buf[1]; |
1283eee5 | 417 | Int_t nbuf; |
37831078 | 418 | Float_t a,z; |
1283eee5 | 419 | |
420 | for(nc = 0;nc<fNoComp;nc++) | |
421 | { | |
422 | ||
423 | // retrive material constants | |
424 | ||
37831078 | 425 | gMC->Gfmate((*fIdmate)[fMixtComp[nc]],namate,a,z,rho,X0,absl,buf,nbuf); |
1283eee5 | 426 | |
427 | amat[nc] = a; | |
428 | zmat[nc] = z; | |
429 | ||
430 | Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10; | |
431 | ||
37831078 | 432 | am += fMixtProp[nc]*((fMixtComp[nc]>=20) ? apure[nnc] : amol[nnc]); |
1283eee5 | 433 | density += fMixtProp[nc]*rho; // density of the mixture |
434 | ||
435 | } | |
436 | ||
437 | // mixture proportions by weight! | |
438 | ||
439 | for(nc = 0;nc<fNoComp;nc++) | |
440 | { | |
441 | ||
442 | Int_t nnc = (fMixtComp[nc]>=20) ? fMixtComp[nc]%20 : fMixtComp[nc]%10; | |
443 | ||
37831078 | 444 | wmat[nc] = fMixtProp[nc]*((fMixtComp[nc]>=20) ? |
445 | apure[nnc] : amol[nnc])/am; | |
446 | ||
447 | } | |
448 | ||
449 | // Drift gases 1 - nonsensitive, 2 - sensitive | |
1283eee5 | 450 | |
1283eee5 | 451 | AliMixture(31,"Drift gas 1",amat,zmat,density,fNoComp,wmat); |
452 | AliMixture(32,"Drift gas 2",amat,zmat,density,fNoComp,wmat); | |
1283eee5 | 453 | |
1283eee5 | 454 | |
37831078 | 455 | // Air |
456 | ||
457 | amat[0] = 14.61; | |
458 | zmat[0] = 7.3; | |
459 | density = 0.001205; | |
1283eee5 | 460 | |
37831078 | 461 | AliMaterial(24,"Air",amat[0],zmat[0],density,999.,999.); |
1283eee5 | 462 | |
1283eee5 | 463 | |
464 | //---------------------------------------------------------------------- | |
465 | // solid materials | |
466 | //---------------------------------------------------------------------- | |
467 | ||
1283eee5 | 468 | |
37831078 | 469 | // Kevlar C14H22O2N2 |
1283eee5 | 470 | |
37831078 | 471 | amat[0] = 12.011; |
472 | amat[1] = 1.; | |
473 | amat[2] = 15.999; | |
474 | amat[3] = 14.006; | |
1283eee5 | 475 | |
37831078 | 476 | zmat[0] = 6.; |
477 | zmat[1] = 1.; | |
478 | zmat[2] = 8.; | |
479 | zmat[3] = 7.; | |
480 | ||
481 | wmat[0] = 14.; | |
482 | wmat[1] = 22.; | |
483 | wmat[2] = 2.; | |
484 | wmat[3] = 2.; | |
485 | ||
486 | density = 1.45; | |
487 | ||
488 | AliMixture(34,"Kevlar",amat,zmat,density,-4,wmat); | |
489 | ||
490 | // NOMEX | |
1283eee5 | 491 | |
37831078 | 492 | amat[0] = 12.011; |
493 | amat[1] = 1.; | |
494 | amat[2] = 15.999; | |
495 | amat[3] = 14.006; | |
496 | ||
497 | zmat[0] = 6.; | |
498 | zmat[1] = 1.; | |
499 | zmat[2] = 8.; | |
500 | zmat[3] = 7.; | |
501 | ||
502 | wmat[0] = 14.; | |
503 | wmat[1] = 22.; | |
504 | wmat[2] = 2.; | |
505 | wmat[3] = 2.; | |
506 | ||
507 | density = 0.03; | |
1283eee5 | 508 | |
fe4da5cc | 509 | |
37831078 | 510 | AliMixture(35,"NOMEX",amat,zmat,density,-4,wmat); |
511 | ||
512 | // Makrolon C16H18O3 | |
513 | ||
514 | amat[0] = 12.011; | |
515 | amat[1] = 1.; | |
516 | amat[2] = 15.999; | |
1283eee5 | 517 | |
37831078 | 518 | zmat[0] = 6.; |
519 | zmat[1] = 1.; | |
520 | zmat[2] = 8.; | |
521 | ||
522 | wmat[0] = 16.; | |
523 | wmat[1] = 18.; | |
524 | wmat[2] = 3.; | |
525 | ||
526 | density = 1.2; | |
527 | ||
528 | AliMixture(36,"Makrolon",amat,zmat,density,-3,wmat); | |
529 | ||
1283eee5 | 530 | // Mylar C5H4O2 |
531 | ||
532 | amat[0]=12.011; | |
533 | amat[1]=1.; | |
534 | amat[2]=15.9994; | |
535 | ||
536 | zmat[0]=6.; | |
537 | zmat[1]=1.; | |
538 | zmat[2]=8.; | |
539 | ||
540 | wmat[0]=5.; | |
541 | wmat[1]=4.; | |
542 | wmat[2]=2.; | |
543 | ||
544 | density = 1.39; | |
fe4da5cc | 545 | |
37831078 | 546 | AliMixture(37, "Mylar",amat,zmat,density,-3,wmat); |
1283eee5 | 547 | |
37831078 | 548 | // G10 60% SiO2 + 40% epoxy, I use A and Z for SiO2 |
1283eee5 | 549 | |
37831078 | 550 | amat[0]=28.086; |
551 | amat[1]=15.9994; | |
1283eee5 | 552 | |
37831078 | 553 | zmat[0]=14.; |
554 | zmat[1]=8.; | |
1283eee5 | 555 | |
37831078 | 556 | wmat[0]=1.; |
557 | wmat[1]=2.; | |
1283eee5 | 558 | |
37831078 | 559 | density = 1.7; |
1283eee5 | 560 | |
37831078 | 561 | AliMixture(38,"SiO2",amat,zmat,2.2,-2,wmat); //SiO2 - quartz |
562 | ||
563 | gMC->Gfmate((*fIdmate)[38],namate,amat[0],zmat[0],rho,X0,absl,buf,nbuf); | |
1283eee5 | 564 | |
37831078 | 565 | AliMaterial(39,"G10",amat[0],zmat[0],density,999.,999.); |
1283eee5 | 566 | |
37831078 | 567 | // Al |
1283eee5 | 568 | |
37831078 | 569 | amat[0] = 26.98; |
570 | zmat[0] = 13.; | |
1283eee5 | 571 | |
37831078 | 572 | density = 2.7; |
1283eee5 | 573 | |
37831078 | 574 | AliMaterial(40,"Al",amat[0],zmat[0],density,999.,999.); |
1283eee5 | 575 | |
37831078 | 576 | // Si |
1283eee5 | 577 | |
37831078 | 578 | amat[0] = 28.086; |
579 | zmat[0] = 14., | |
1283eee5 | 580 | |
37831078 | 581 | density = 2.33; |
1283eee5 | 582 | |
37831078 | 583 | AliMaterial(41,"Si",amat[0],zmat[0],density,999.,999.); |
1283eee5 | 584 | |
37831078 | 585 | // Cu |
1283eee5 | 586 | |
37831078 | 587 | amat[0] = 63.546; |
588 | zmat[0] = 29.; | |
1283eee5 | 589 | |
37831078 | 590 | density = 8.96; |
1283eee5 | 591 | |
37831078 | 592 | AliMaterial(42,"Cu",amat[0],zmat[0],density,999.,999.); |
1283eee5 | 593 | |
37831078 | 594 | // Tedlar C2H3F |
1283eee5 | 595 | |
37831078 | 596 | amat[0] = 12.011; |
597 | amat[1] = 1.; | |
598 | amat[2] = 18.998; | |
1283eee5 | 599 | |
37831078 | 600 | zmat[0] = 6.; |
601 | zmat[1] = 1.; | |
602 | zmat[2] = 9.; | |
1283eee5 | 603 | |
37831078 | 604 | wmat[0] = 2.; |
605 | wmat[1] = 3.; | |
606 | wmat[2] = 1.; | |
1283eee5 | 607 | |
37831078 | 608 | density = 1.71; |
1283eee5 | 609 | |
37831078 | 610 | AliMixture(43, "Tedlar",amat,zmat,density,-3,wmat); |
1283eee5 | 611 | |
1283eee5 | 612 | |
37831078 | 613 | // Plexiglas C5H8O2 |
1283eee5 | 614 | |
37831078 | 615 | amat[0]=12.011; |
616 | amat[1]=1.; | |
617 | amat[2]=15.9994; | |
1283eee5 | 618 | |
37831078 | 619 | zmat[0]=6.; |
620 | zmat[1]=1.; | |
621 | zmat[2]=8.; | |
1283eee5 | 622 | |
37831078 | 623 | wmat[0]=5.; |
624 | wmat[1]=8.; | |
625 | wmat[2]=2.; | |
1283eee5 | 626 | |
37831078 | 627 | density=1.18; |
1283eee5 | 628 | |
37831078 | 629 | AliMixture(44,"Plexiglas",amat,zmat,density,-3,wmat); |
1283eee5 | 630 | |
1283eee5 | 631 | |
37831078 | 632 | |
633 | //---------------------------------------------------------- | |
634 | // tracking media for gases | |
635 | //---------------------------------------------------------- | |
636 | ||
637 | AliMedium(0, "Air", 24, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1); | |
638 | AliMedium(1, "Drift gas 1", 31, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001); | |
639 | AliMedium(2, "Drift gas 2", 32, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001); | |
640 | AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001); | |
641 | ||
642 | //----------------------------------------------------------- | |
643 | // tracking media for solids | |
644 | //----------------------------------------------------------- | |
645 | ||
646 | AliMedium(4,"Al",40,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001); | |
647 | AliMedium(5,"Kevlar",34,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001); | |
648 | AliMedium(6,"Nomex",35,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001); | |
649 | AliMedium(7,"Makrolon",36,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001); | |
650 | AliMedium(8,"Mylar",37,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001); | |
651 | AliMedium(9,"Tedlar",43,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001); | |
652 | AliMedium(10,"Cu",42,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001); | |
653 | AliMedium(11,"Si",41,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001); | |
654 | AliMedium(12,"G10",39,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001); | |
655 | AliMedium(13,"Plexiglas",44,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001); | |
1283eee5 | 656 | |
fe4da5cc | 657 | } |
658 | ||
fe4da5cc | 659 | |
73042f01 | 660 | void AliTPC::Digits2Clusters(TFile *of) |
fe4da5cc | 661 | { |
3c0f9266 | 662 | //----------------------------------------------------------------- |
663 | // This is a simple cluster finder. | |
3c0f9266 | 664 | //----------------------------------------------------------------- |
73042f01 | 665 | AliTPCclusterer::Digits2Clusters(fTPCParam,of); |
fe4da5cc | 666 | } |
667 | ||
73042f01 | 668 | extern Double_t SigmaY2(Double_t, Double_t, Double_t); |
669 | extern Double_t SigmaZ2(Double_t, Double_t); | |
fe4da5cc | 670 | //_____________________________________________________________________________ |
73042f01 | 671 | void AliTPC::Hits2Clusters(TFile *of) |
fe4da5cc | 672 | { |
8c555625 | 673 | //-------------------------------------------------------- |
fe4da5cc | 674 | // TPC simple cluster generator from hits |
675 | // obtained from the TPC Fast Simulator | |
8c555625 | 676 | // The point errors are taken from the parametrization |
677 | //-------------------------------------------------------- | |
678 | ||
679 | //----------------------------------------------------------------- | |
680 | // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl | |
681 | //----------------------------------------------------------------- | |
73042f01 | 682 | // Adopted to Marian's cluster data structure by I.Belikov, CERN, |
683 | // Jouri.Belikov@cern.ch | |
684 | //---------------------------------------------------------------- | |
685 | ||
686 | ///////////////////////////////////////////////////////////////////////////// | |
687 | // | |
688 | //--------------------------------------------------------------------- | |
689 | // ALICE TPC Cluster Parameters | |
690 | //-------------------------------------------------------------------- | |
691 | ||
692 | ||
693 | ||
694 | // Cluster width in rphi | |
695 | const Float_t kACrphi=0.18322; | |
696 | const Float_t kBCrphi=0.59551e-3; | |
697 | const Float_t kCCrphi=0.60952e-1; | |
698 | // Cluster width in z | |
699 | const Float_t kACz=0.19081; | |
700 | const Float_t kBCz=0.55938e-3; | |
701 | const Float_t kCCz=0.30428; | |
702 | ||
703 | TDirectory *savedir=gDirectory; | |
704 | ||
705 | if (!of->IsOpen()) { | |
706 | cerr<<"AliTPC::Hits2Clusters(): output file not open !\n"; | |
707 | return; | |
708 | } | |
3c0f9266 | 709 | |
cc80f89e | 710 | if(fTPCParam == 0){ |
711 | printf("AliTPCParam MUST be created firstly\n"); | |
712 | return; | |
713 | } | |
714 | ||
73042f01 | 715 | Float_t sigmaRphi,sigmaZ,clRphi,clZ; |
fe4da5cc | 716 | // |
1578254f | 717 | TParticle *particle; // pointer to a given particle |
fe4da5cc | 718 | AliTPChit *tpcHit; // pointer to a sigle TPC hit |
73042f01 | 719 | TClonesArray *particles; //pointer to the particle list |
fe4da5cc | 720 | Int_t sector,nhits; |
721 | Int_t ipart; | |
722 | Float_t xyz[5]; | |
723 | Float_t pl,pt,tanth,rpad,ratio; | |
fe4da5cc | 724 | Float_t cph,sph; |
725 | ||
726 | //--------------------------------------------------------------- | |
727 | // Get the access to the tracks | |
728 | //--------------------------------------------------------------- | |
729 | ||
73042f01 | 730 | TTree *tH = gAlice->TreeH(); |
731 | Stat_t ntracks = tH->GetEntries(); | |
732 | particles=gAlice->Particles(); | |
733 | ||
734 | //Switch to the output file | |
735 | of->cd(); | |
736 | ||
737 | fTPCParam->Write(fTPCParam->GetTitle()); | |
738 | AliTPCClustersArray carray; | |
739 | carray.Setup(fTPCParam); | |
740 | carray.SetClusterType("AliTPCcluster"); | |
741 | carray.MakeTree(); | |
742 | ||
743 | Int_t nclusters=0; //cluster counter | |
fe4da5cc | 744 | |
745 | //------------------------------------------------------------ | |
cc80f89e | 746 | // Loop over all sectors (72 sectors for 20 deg |
747 | // segmentation for both lower and upper sectors) | |
748 | // Sectors 0-35 are lower sectors, 0-17 z>0, 17-35 z<0 | |
3c0f9266 | 749 | // Sectors 36-71 are upper sectors, 36-53 z>0, 54-71 z<0 |
fe4da5cc | 750 | // |
3c0f9266 | 751 | // First cluster for sector 0 starts at "0" |
fe4da5cc | 752 | //------------------------------------------------------------ |
cc80f89e | 753 | |
754 | for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++){ | |
8c555625 | 755 | //MI change |
cc80f89e | 756 | fTPCParam->AdjustCosSin(isec,cph,sph); |
fe4da5cc | 757 | |
758 | //------------------------------------------------------------ | |
759 | // Loop over tracks | |
760 | //------------------------------------------------------------ | |
761 | ||
762 | for(Int_t track=0;track<ntracks;track++){ | |
763 | ResetHits(); | |
73042f01 | 764 | tH->GetEvent(track); |
fe4da5cc | 765 | // |
73042f01 | 766 | // Get number of the TPC hits |
fe4da5cc | 767 | // |
768 | nhits=fHits->GetEntriesFast(); | |
fe4da5cc | 769 | // |
770 | // Loop over hits | |
771 | // | |
772 | for(Int_t hit=0;hit<nhits;hit++){ | |
773 | tpcHit=(AliTPChit*)fHits->UncheckedAt(hit); | |
cc80f89e | 774 | if (tpcHit->fQ == 0.) continue; //information about track (I.Belikov) |
fe4da5cc | 775 | sector=tpcHit->fSector; // sector number |
776 | if(sector != isec) continue; //terminate iteration | |
94de3818 | 777 | ipart=tpcHit->Track(); |
73042f01 | 778 | particle=(TParticle*)particles->UncheckedAt(ipart); |
1578254f | 779 | pl=particle->Pz(); |
780 | pt=particle->Pt(); | |
fe4da5cc | 781 | if(pt < 1.e-9) pt=1.e-9; |
782 | tanth=pl/pt; | |
783 | tanth = TMath::Abs(tanth); | |
94de3818 | 784 | rpad=TMath::Sqrt(tpcHit->X()*tpcHit->X() + tpcHit->Y()*tpcHit->Y()); |
fe4da5cc | 785 | ratio=0.001*rpad/pt; // pt must be in MeV/c - historical reason |
73042f01 | 786 | |
fe4da5cc | 787 | // space-point resolutions |
788 | ||
73042f01 | 789 | sigmaRphi=SigmaY2(rpad,tanth,pt); |
790 | sigmaZ =SigmaZ2(rpad,tanth ); | |
fe4da5cc | 791 | |
792 | // cluster widths | |
793 | ||
73042f01 | 794 | clRphi=kACrphi-kBCrphi*rpad*tanth+kCCrphi*ratio*ratio; |
795 | clZ=kACz-kBCz*rpad*tanth+kCCz*tanth*tanth; | |
fe4da5cc | 796 | |
797 | // temporary protection | |
798 | ||
73042f01 | 799 | if(sigmaRphi < 0.) sigmaRphi=0.4e-3; |
800 | if(sigmaZ < 0.) sigmaZ=0.4e-3; | |
801 | if(clRphi < 0.) clRphi=2.5e-3; | |
802 | if(clZ < 0.) clZ=2.5e-5; | |
fe4da5cc | 803 | |
804 | // | |
cc80f89e | 805 | |
806 | // | |
807 | // smearing --> rotate to the 1 (13) or to the 25 (49) sector, | |
fe4da5cc | 808 | // then the inaccuracy in a X-Y plane is only along Y (pad row)! |
809 | // | |
94de3818 | 810 | Float_t xprim= tpcHit->X()*cph + tpcHit->Y()*sph; |
811 | Float_t yprim=-tpcHit->X()*sph + tpcHit->Y()*cph; | |
73042f01 | 812 | xyz[0]=gRandom->Gaus(yprim,TMath::Sqrt(sigmaRphi)); // y |
813 | Float_t alpha=(isec < fTPCParam->GetNInnerSector()) ? | |
814 | fTPCParam->GetInnerAngle() : fTPCParam->GetOuterAngle(); | |
815 | Float_t ymax=xprim*TMath::Tan(0.5*alpha); | |
816 | if (TMath::Abs(xyz[0])>ymax) xyz[0]=yprim; | |
94de3818 | 817 | xyz[1]=gRandom->Gaus(tpcHit->Z(),TMath::Sqrt(sigmaZ)); // z |
818 | if (TMath::Abs(xyz[1])>fTPCParam->GetZLength()) xyz[1]=tpcHit->Z(); | |
cc80f89e | 819 | xyz[2]=tpcHit->fQ; // q |
73042f01 | 820 | xyz[3]=sigmaRphi; // fSigmaY2 |
821 | xyz[4]=sigmaZ; // fSigmaZ2 | |
822 | ||
823 | AliTPCClustersRow *clrow=carray.GetRow(sector,tpcHit->fPadRow); | |
824 | if (!clrow) clrow=carray.CreateRow(sector,tpcHit->fPadRow); | |
825 | ||
94de3818 | 826 | Int_t tracks[3]={tpcHit->Track(), -1, -1}; |
73042f01 | 827 | AliTPCcluster cluster(xyz,tracks); |
828 | ||
829 | clrow->InsertCluster(&cluster); nclusters++; | |
830 | ||
fe4da5cc | 831 | } // end of loop over hits |
73042f01 | 832 | |
833 | } // end of loop over tracks | |
834 | ||
835 | Int_t nrows=fTPCParam->GetNRow(isec); | |
836 | for (Int_t irow=0; irow<nrows; irow++) { | |
837 | AliTPCClustersRow *clrow=carray.GetRow(isec,irow); | |
838 | if (!clrow) continue; | |
839 | carray.StoreRow(isec,irow); | |
840 | carray.ClearRow(isec,irow); | |
841 | } | |
842 | ||
cc80f89e | 843 | } // end of loop over sectors |
73042f01 | 844 | |
845 | cerr<<"Number of made clusters : "<<nclusters<<" \n"; | |
846 | ||
847 | carray.GetTree()->Write(); | |
848 | ||
849 | savedir->cd(); //switch back to the input file | |
cc80f89e | 850 | |
851 | } // end of function | |
852 | ||
853 | //_________________________________________________________________ | |
854 | void AliTPC::Hits2ExactClustersSector(Int_t isec) | |
855 | { | |
856 | //-------------------------------------------------------- | |
857 | //calculate exact cross point of track and given pad row | |
858 | //resulting values are expressed in "digit" coordinata | |
859 | //-------------------------------------------------------- | |
860 | ||
861 | //----------------------------------------------------------------- | |
862 | // Origin: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de | |
863 | //----------------------------------------------------------------- | |
864 | // | |
865 | if (fClustersArray==0){ | |
866 | return; | |
867 | } | |
868 | // | |
869 | TParticle *particle; // pointer to a given particle | |
870 | AliTPChit *tpcHit; // pointer to a sigle TPC hit | |
73042f01 | 871 | TClonesArray *particles; //pointer to the particle list |
cc80f89e | 872 | Int_t sector,nhits; |
873 | Int_t ipart; | |
73042f01 | 874 | const Int_t kcmaxhits=30000; |
875 | TVector * xxxx = new TVector(kcmaxhits*4); | |
cc80f89e | 876 | TVector & xxx = *xxxx; |
73042f01 | 877 | Int_t maxhits = kcmaxhits; |
cc80f89e | 878 | //construct array for each padrow |
879 | for (Int_t i=0; i<fTPCParam->GetNRow(isec);i++) | |
880 | fClustersArray->CreateRow(isec,i); | |
fe4da5cc | 881 | |
cc80f89e | 882 | //--------------------------------------------------------------- |
883 | // Get the access to the tracks | |
884 | //--------------------------------------------------------------- | |
885 | ||
73042f01 | 886 | TTree *tH = gAlice->TreeH(); |
887 | Stat_t ntracks = tH->GetEntries(); | |
888 | particles=gAlice->Particles(); | |
889 | Int_t npart = particles->GetEntriesFast(); | |
cc80f89e | 890 | |
891 | //------------------------------------------------------------ | |
892 | // Loop over tracks | |
893 | //------------------------------------------------------------ | |
fe4da5cc | 894 | |
cc80f89e | 895 | for(Int_t track=0;track<ntracks;track++){ |
896 | ResetHits(); | |
73042f01 | 897 | tH->GetEvent(track); |
cc80f89e | 898 | // |
899 | // Get number of the TPC hits and a pointer | |
900 | // to the particles | |
901 | // | |
902 | nhits=fHits->GetEntriesFast(); | |
903 | // | |
904 | // Loop over hits | |
905 | // | |
906 | Int_t currentIndex=0; | |
907 | Int_t lastrow=-1; //last writen row | |
908 | for(Int_t hit=0;hit<nhits;hit++){ | |
909 | tpcHit=(AliTPChit*)fHits->UncheckedAt(hit); | |
910 | if (tpcHit==0) continue; | |
911 | sector=tpcHit->fSector; // sector number | |
912 | if(sector != isec) continue; | |
94de3818 | 913 | ipart=tpcHit->Track(); |
73042f01 | 914 | if (ipart<npart) particle=(TParticle*)particles->UncheckedAt(ipart); |
cc80f89e | 915 | |
916 | //find row number | |
917 | ||
94de3818 | 918 | Float_t x[3]={tpcHit->X(),tpcHit->Y(),tpcHit->Z()}; |
cc80f89e | 919 | Int_t index[3]={1,isec,0}; |
920 | Int_t currentrow = fTPCParam->GetPadRow(x,index) ; | |
921 | if (currentrow<0) continue; | |
922 | if (lastrow<0) lastrow=currentrow; | |
923 | if (currentrow==lastrow){ | |
924 | if ( currentIndex>=maxhits){ | |
73042f01 | 925 | maxhits+=kcmaxhits; |
cc80f89e | 926 | xxx.ResizeTo(4*maxhits); |
927 | } | |
928 | xxx(currentIndex*4)=x[0]; | |
929 | xxx(currentIndex*4+1)=x[1]; | |
930 | xxx(currentIndex*4+2)=x[2]; | |
931 | xxx(currentIndex*4+3)=tpcHit->fQ; | |
932 | currentIndex++; | |
933 | } | |
934 | else | |
935 | if (currentIndex>2){ | |
936 | Float_t sumx=0; | |
937 | Float_t sumx2=0; | |
938 | Float_t sumx3=0; | |
939 | Float_t sumx4=0; | |
940 | Float_t sumy=0; | |
941 | Float_t sumxy=0; | |
942 | Float_t sumx2y=0; | |
943 | Float_t sumz=0; | |
944 | Float_t sumxz=0; | |
945 | Float_t sumx2z=0; | |
946 | Float_t sumq=0; | |
947 | for (Int_t index=0;index<currentIndex;index++){ | |
948 | Float_t x,x2,x3,x4; | |
949 | x=x2=x3=x4=xxx(index*4); | |
950 | x2*=x; | |
951 | x3*=x2; | |
952 | x4*=x3; | |
953 | sumx+=x; | |
954 | sumx2+=x2; | |
955 | sumx3+=x3; | |
956 | sumx4+=x4; | |
957 | sumy+=xxx(index*4+1); | |
958 | sumxy+=xxx(index*4+1)*x; | |
959 | sumx2y+=xxx(index*4+1)*x2; | |
960 | sumz+=xxx(index*4+2); | |
961 | sumxz+=xxx(index*4+2)*x; | |
962 | sumx2z+=xxx(index*4+2)*x2; | |
963 | sumq+=xxx(index*4+3); | |
964 | } | |
73042f01 | 965 | Float_t centralPad = (fTPCParam->GetNPads(isec,lastrow)-1)/2; |
cc80f89e | 966 | Float_t det=currentIndex*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumx*sumx4-sumx2*sumx3)+ |
967 | sumx2*(sumx*sumx3-sumx2*sumx2); | |
968 | ||
969 | Float_t detay=sumy*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxy*sumx4-sumx2y*sumx3)+ | |
970 | sumx2*(sumxy*sumx3-sumx2y*sumx2); | |
971 | Float_t detaz=sumz*(sumx2*sumx4-sumx3*sumx3)-sumx*(sumxz*sumx4-sumx2z*sumx3)+ | |
972 | sumx2*(sumxz*sumx3-sumx2z*sumx2); | |
973 | ||
974 | Float_t detby=currentIndex*(sumxy*sumx4-sumx2y*sumx3)-sumy*(sumx*sumx4-sumx2*sumx3)+ | |
975 | sumx2*(sumx*sumx2y-sumx2*sumxy); | |
976 | Float_t detbz=currentIndex*(sumxz*sumx4-sumx2z*sumx3)-sumz*(sumx*sumx4-sumx2*sumx3)+ | |
977 | sumx2*(sumx*sumx2z-sumx2*sumxz); | |
978 | ||
73042f01 | 979 | Float_t y=detay/det+centralPad; |
cc80f89e | 980 | Float_t z=detaz/det; |
981 | Float_t by=detby/det; //y angle | |
982 | Float_t bz=detbz/det; //z angle | |
983 | sumy/=Float_t(currentIndex); | |
984 | sumz/=Float_t(currentIndex); | |
985 | AliCluster cl; | |
986 | cl.fX=z; | |
987 | cl.fY=y; | |
988 | cl.fQ=sumq; | |
989 | cl.fSigmaX2=bz; | |
990 | cl.fSigmaY2=by; | |
991 | cl.fTracks[0]=ipart; | |
992 | ||
993 | AliTPCClustersRow * row = (fClustersArray->GetRow(isec,lastrow)); | |
994 | if (row!=0) row->InsertCluster(&cl); | |
995 | currentIndex=0; | |
996 | lastrow=currentrow; | |
997 | } //end of calculating cluster for given row | |
998 | ||
999 | ||
1000 | ||
1001 | } // end of loop over hits | |
1002 | } // end of loop over tracks | |
1003 | //write padrows to tree | |
1004 | for (Int_t ii=0; ii<fTPCParam->GetNRow(isec);ii++) { | |
1005 | fClustersArray->StoreRow(isec,ii); | |
1006 | fClustersArray->ClearRow(isec,ii); | |
1007 | } | |
1008 | xxxx->Delete(); | |
1009 | ||
fe4da5cc | 1010 | } |
1011 | ||
cc80f89e | 1012 | //__________________________________________________________________ |
8c555625 | 1013 | void AliTPC::Hits2Digits() |
1014 | { | |
8c555625 | 1015 | //---------------------------------------------------- |
cc80f89e | 1016 | // Loop over all sectors |
1017 | //---------------------------------------------------- | |
1018 | ||
1019 | if(fTPCParam == 0){ | |
1020 | printf("AliTPCParam MUST be created firstly\n"); | |
1021 | return; | |
1022 | } | |
1023 | ||
1024 | for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++) Hits2DigitsSector(isec); | |
1025 | ||
8c555625 | 1026 | } |
1027 | ||
1028 | ||
fe4da5cc | 1029 | //_____________________________________________________________________________ |
8c555625 | 1030 | void AliTPC::Hits2DigitsSector(Int_t isec) |
fe4da5cc | 1031 | { |
8c555625 | 1032 | //------------------------------------------------------------------- |
fe4da5cc | 1033 | // TPC conversion from hits to digits. |
8c555625 | 1034 | //------------------------------------------------------------------- |
1035 | ||
1036 | //----------------------------------------------------------------- | |
1037 | // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl | |
1038 | //----------------------------------------------------------------- | |
1039 | ||
fe4da5cc | 1040 | //------------------------------------------------------- |
8c555625 | 1041 | // Get the access to the track hits |
fe4da5cc | 1042 | //------------------------------------------------------- |
8c555625 | 1043 | |
cc80f89e | 1044 | |
73042f01 | 1045 | TTree *tH = gAlice->TreeH(); // pointer to the hits tree |
1046 | Stat_t ntracks = tH->GetEntries(); | |
8c555625 | 1047 | |
1048 | if( ntracks > 0){ | |
1049 | ||
1050 | //------------------------------------------- | |
1051 | // Only if there are any tracks... | |
1052 | //------------------------------------------- | |
1053 | ||
8c555625 | 1054 | TObjArray **row; |
fe4da5cc | 1055 | |
8c555625 | 1056 | printf("*** Processing sector number %d ***\n",isec); |
1057 | ||
1058 | Int_t nrows =fTPCParam->GetNRow(isec); | |
1059 | ||
1060 | row= new TObjArray* [nrows]; | |
fe4da5cc | 1061 | |
73042f01 | 1062 | MakeSector(isec,nrows,tH,ntracks,row); |
8c555625 | 1063 | |
1064 | //-------------------------------------------------------- | |
1065 | // Digitize this sector, row by row | |
1066 | // row[i] is the pointer to the TObjArray of TVectors, | |
1067 | // each one containing electrons accepted on this | |
1068 | // row, assigned into tracks | |
1069 | //-------------------------------------------------------- | |
1070 | ||
1071 | Int_t i; | |
1072 | ||
cc80f89e | 1073 | if (fDigitsArray->GetTree()==0) fDigitsArray->MakeTree(); |
8c555625 | 1074 | |
cc80f89e | 1075 | for (i=0;i<nrows;i++){ |
8c555625 | 1076 | |
cc80f89e | 1077 | AliDigits * dig = fDigitsArray->CreateRow(isec,i); |
8c555625 | 1078 | |
cc80f89e | 1079 | DigitizeRow(i,isec,row); |
8c555625 | 1080 | |
cc80f89e | 1081 | fDigitsArray->StoreRow(isec,i); |
8c555625 | 1082 | |
73042f01 | 1083 | Int_t ndig = dig->GetDigitSize(); |
cc80f89e | 1084 | |
1085 | printf("*** Sector, row, compressed digits %d %d %d ***\n",isec,i,ndig); | |
1086 | ||
1087 | fDigitsArray->ClearRow(isec,i); | |
8c555625 | 1088 | |
cc80f89e | 1089 | |
8c555625 | 1090 | } // end of the sector digitization |
8c555625 | 1091 | |
cc80f89e | 1092 | for(i=0;i<nrows;i++){ |
1093 | row[i]->Delete(); | |
1094 | } | |
1095 | ||
8c555625 | 1096 | delete [] row; // delete the array of pointers to TObjArray-s |
1097 | ||
1098 | } // ntracks >0 | |
8c555625 | 1099 | |
cc80f89e | 1100 | } // end of Hits2DigitsSector |
8c555625 | 1101 | |
8c555625 | 1102 | |
8c555625 | 1103 | //_____________________________________________________________________________ |
cc80f89e | 1104 | void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows) |
8c555625 | 1105 | { |
1106 | //----------------------------------------------------------- | |
1107 | // Single row digitization, coupling from the neighbouring | |
1108 | // rows taken into account | |
1109 | //----------------------------------------------------------- | |
1110 | ||
1111 | //----------------------------------------------------------------- | |
1112 | // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl | |
cc80f89e | 1113 | // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de |
8c555625 | 1114 | //----------------------------------------------------------------- |
1115 | ||
1116 | ||
8c555625 | 1117 | Float_t zerosup = fTPCParam->GetZeroSup(); |
1118 | Int_t nrows =fTPCParam->GetNRow(isec); | |
cc80f89e | 1119 | fCurrentIndex[1]= isec; |
8c555625 | 1120 | |
8c555625 | 1121 | |
73042f01 | 1122 | Int_t nofPads = fTPCParam->GetNPads(isec,irow); |
1123 | Int_t nofTbins = fTPCParam->GetMaxTBin(); | |
1124 | Int_t indexRange[4]; | |
8c555625 | 1125 | // |
1126 | // Integrated signal for this row | |
1127 | // and a single track signal | |
cc80f89e | 1128 | // |
73042f01 | 1129 | TMatrix *m1 = new TMatrix(0,nofPads,0,nofTbins); // integrated |
1130 | TMatrix *m2 = new TMatrix(0,nofPads,0,nofTbins); // single | |
8c555625 | 1131 | // |
73042f01 | 1132 | TMatrix &total = *m1; |
8c555625 | 1133 | |
1134 | // Array of pointers to the label-signal list | |
1135 | ||
73042f01 | 1136 | Int_t nofDigits = nofPads*nofTbins; // number of digits for this row |
1137 | Float_t **pList = new Float_t* [nofDigits]; | |
8c555625 | 1138 | |
1139 | Int_t lp; | |
cc80f89e | 1140 | Int_t i1; |
73042f01 | 1141 | for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL |
8c555625 | 1142 | // |
cc80f89e | 1143 | //calculate signal |
1144 | // | |
1145 | Int_t row1 = TMath::Max(irow-fTPCParam->GetNCrossRows(),0); | |
1146 | Int_t row2 = TMath::Min(irow+fTPCParam->GetNCrossRows(),nrows-1); | |
1147 | for (Int_t row= row1;row<=row2;row++){ | |
1148 | Int_t nTracks= rows[row]->GetEntries(); | |
1149 | for (i1=0;i1<nTracks;i1++){ | |
1150 | fCurrentIndex[2]= row; | |
1151 | fCurrentIndex[3]=irow; | |
1152 | if (row==irow){ | |
1153 | m2->Zero(); // clear single track signal matrix | |
73042f01 | 1154 | Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange); |
1155 | GetList(trackLabel,nofPads,m2,indexRange,pList); | |
cc80f89e | 1156 | } |
73042f01 | 1157 | else GetSignal(rows[row],i1,0,m1,indexRange); |
cc80f89e | 1158 | } |
8c555625 | 1159 | } |
cc80f89e | 1160 | |
8c555625 | 1161 | Int_t tracks[3]; |
8c555625 | 1162 | |
cc80f89e | 1163 | AliDigits *dig = fDigitsArray->GetRow(isec,irow); |
73042f01 | 1164 | for(Int_t ip=0;ip<nofPads;ip++){ |
1165 | for(Int_t it=0;it<nofTbins;it++){ | |
8c555625 | 1166 | |
73042f01 | 1167 | Float_t q = total(ip,it); |
8c555625 | 1168 | |
73042f01 | 1169 | Int_t gi =it*nofPads+ip; // global index |
8c555625 | 1170 | |
cc80f89e | 1171 | q = gRandom->Gaus(q,fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac()); |
8c555625 | 1172 | |
cc80f89e | 1173 | q = (Int_t)q; |
1174 | ||
1175 | if(q <=zerosup) continue; // do not fill zeros | |
73042f01 | 1176 | if(q > fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat(); // saturation |
8c555625 | 1177 | |
1178 | // | |
1179 | // "real" signal or electronic noise (list = -1)? | |
1180 | // | |
1181 | ||
1182 | for(Int_t j1=0;j1<3;j1++){ | |
1183 | tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -1; | |
1184 | } | |
1185 | ||
cc80f89e | 1186 | //Begin_Html |
1187 | /* | |
1188 | <A NAME="AliDigits"></A> | |
1189 | using of AliDigits object | |
1190 | */ | |
1191 | //End_Html | |
1192 | dig->SetDigitFast((Short_t)q,it,ip); | |
1193 | if (fDigitsArray->IsSimulated()) | |
1194 | { | |
1195 | ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0); | |
1196 | ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1); | |
1197 | ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2); | |
1198 | } | |
1199 | ||
8c555625 | 1200 | |
1201 | } // end of loop over time buckets | |
1202 | } // end of lop over pads | |
1203 | ||
1204 | // | |
1205 | // This row has been digitized, delete nonused stuff | |
1206 | // | |
1207 | ||
73042f01 | 1208 | for(lp=0;lp<nofDigits;lp++){ |
8c555625 | 1209 | if(pList[lp]) delete [] pList[lp]; |
1210 | } | |
1211 | ||
1212 | delete [] pList; | |
1213 | ||
1214 | delete m1; | |
1215 | delete m2; | |
cc80f89e | 1216 | // delete m3; |
8c555625 | 1217 | |
1218 | } // end of DigitizeRow | |
cc80f89e | 1219 | |
8c555625 | 1220 | //_____________________________________________________________________________ |
cc80f89e | 1221 | |
1222 | Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr, TMatrix *m1, TMatrix *m2, | |
73042f01 | 1223 | Int_t *indexRange) |
8c555625 | 1224 | { |
1225 | ||
1226 | //--------------------------------------------------------------- | |
1227 | // Calculates 2-D signal (pad,time) for a single track, | |
1228 | // returns a pointer to the signal matrix and the track label | |
1229 | // No digitization is performed at this level!!! | |
1230 | //--------------------------------------------------------------- | |
1231 | ||
1232 | //----------------------------------------------------------------- | |
1233 | // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl | |
cc80f89e | 1234 | // Modified: Marian Ivanov |
8c555625 | 1235 | //----------------------------------------------------------------- |
1236 | ||
1237 | TVector *tv; | |
8c555625 | 1238 | |
8c555625 | 1239 | tv = (TVector*)p1->At(ntr); // pointer to a track |
1240 | TVector &v = *tv; | |
1241 | ||
1242 | Float_t label = v(0); | |
73042f01 | 1243 | Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3])-1)/2; |
8c555625 | 1244 | |
8c555625 | 1245 | Int_t nElectrons = (tv->GetNrows()-1)/4; |
73042f01 | 1246 | indexRange[0]=9999; // min pad |
1247 | indexRange[1]=-1; // max pad | |
1248 | indexRange[2]=9999; //min time | |
1249 | indexRange[3]=-1; // max time | |
8c555625 | 1250 | |
cc80f89e | 1251 | // Float_t IneffFactor = 0.5; // inefficiency in the gain close to the edge, as above |
1252 | ||
1253 | TMatrix &signal = *m1; | |
1254 | TMatrix &total = *m2; | |
8c555625 | 1255 | // |
1256 | // Loop over all electrons | |
1257 | // | |
8c555625 | 1258 | for(Int_t nel=0; nel<nElectrons; nel++){ |
cc80f89e | 1259 | Int_t idx=nel*4; |
1260 | Float_t aval = v(idx+4); | |
1261 | Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac(); | |
1262 | Float_t xyz[3]={v(idx+1),v(idx+2),v(idx+3)}; | |
1263 | Int_t n = fTPCParam->CalcResponse(xyz,fCurrentIndex,fCurrentIndex[3]); | |
8c555625 | 1264 | |
cc80f89e | 1265 | if (n>0) for (Int_t i =0; i<n; i++){ |
1266 | Int_t *index = fTPCParam->GetResBin(i); | |
73042f01 | 1267 | Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0 |
cc80f89e | 1268 | if ( ( pad<(fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]))) && (pad>0)) { |
1269 | Int_t time=index[2]; | |
1270 | Float_t weight = fTPCParam->GetResWeight(i); //we normalise response to ADC channel | |
1271 | weight *= eltoadcfac; | |
1272 | ||
1273 | if (m1!=0) signal(pad,time)+=weight; | |
1274 | total(pad,time)+=weight; | |
73042f01 | 1275 | indexRange[0]=TMath::Min(indexRange[0],pad); |
1276 | indexRange[1]=TMath::Max(indexRange[1],pad); | |
1277 | indexRange[2]=TMath::Min(indexRange[2],time); | |
1278 | indexRange[3]=TMath::Max(indexRange[3],time); | |
cc80f89e | 1279 | } |
1280 | } | |
8c555625 | 1281 | } // end of loop over electrons |
cc80f89e | 1282 | |
8c555625 | 1283 | return label; // returns track label when finished |
1284 | } | |
1285 | ||
1286 | //_____________________________________________________________________________ | |
73042f01 | 1287 | void AliTPC::GetList(Float_t label,Int_t np,TMatrix *m,Int_t *indexRange, |
8c555625 | 1288 | Float_t **pList) |
1289 | { | |
1290 | //---------------------------------------------------------------------- | |
1291 | // Updates the list of tracks contributing to digits for a given row | |
1292 | //---------------------------------------------------------------------- | |
1293 | ||
1294 | //----------------------------------------------------------------- | |
1295 | // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl | |
1296 | //----------------------------------------------------------------- | |
1297 | ||
1298 | TMatrix &signal = *m; | |
1299 | ||
1300 | // lop over nonzero digits | |
1301 | ||
73042f01 | 1302 | for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){ |
1303 | for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){ | |
8c555625 | 1304 | |
1305 | ||
921bf71a | 1306 | // accept only the contribution larger than 500 electrons (1/2 s_noise) |
1307 | ||
cc80f89e | 1308 | if(signal(ip,it)<0.5) continue; |
921bf71a | 1309 | |
1310 | ||
73042f01 | 1311 | Int_t globalIndex = it*np+ip; // globalIndex starts from 0! |
8c555625 | 1312 | |
73042f01 | 1313 | if(!pList[globalIndex]){ |
8c555625 | 1314 | |
1315 | // | |
1316 | // Create new list (6 elements - 3 signals and 3 labels), | |
8c555625 | 1317 | // |
1318 | ||
73042f01 | 1319 | pList[globalIndex] = new Float_t [6]; |
8c555625 | 1320 | |
1321 | // set list to -1 | |
1322 | ||
73042f01 | 1323 | *pList[globalIndex] = -1.; |
1324 | *(pList[globalIndex]+1) = -1.; | |
1325 | *(pList[globalIndex]+2) = -1.; | |
1326 | *(pList[globalIndex]+3) = -1.; | |
1327 | *(pList[globalIndex]+4) = -1.; | |
1328 | *(pList[globalIndex]+5) = -1.; | |
8c555625 | 1329 | |
1330 | ||
73042f01 | 1331 | *pList[globalIndex] = label; |
1332 | *(pList[globalIndex]+3) = signal(ip,it); | |
8c555625 | 1333 | } |
1334 | else{ | |
1335 | ||
1336 | // check the signal magnitude | |
1337 | ||
73042f01 | 1338 | Float_t highest = *(pList[globalIndex]+3); |
1339 | Float_t middle = *(pList[globalIndex]+4); | |
1340 | Float_t lowest = *(pList[globalIndex]+5); | |
8c555625 | 1341 | |
1342 | // | |
1343 | // compare the new signal with already existing list | |
1344 | // | |
1345 | ||
1346 | if(signal(ip,it)<lowest) continue; // neglect this track | |
1347 | ||
1348 | // | |
1349 | ||
1350 | if (signal(ip,it)>highest){ | |
73042f01 | 1351 | *(pList[globalIndex]+5) = middle; |
1352 | *(pList[globalIndex]+4) = highest; | |
1353 | *(pList[globalIndex]+3) = signal(ip,it); | |
8c555625 | 1354 | |
73042f01 | 1355 | *(pList[globalIndex]+2) = *(pList[globalIndex]+1); |
1356 | *(pList[globalIndex]+1) = *pList[globalIndex]; | |
1357 | *pList[globalIndex] = label; | |
8c555625 | 1358 | } |
1359 | else if (signal(ip,it)>middle){ | |
73042f01 | 1360 | *(pList[globalIndex]+5) = middle; |
1361 | *(pList[globalIndex]+4) = signal(ip,it); | |
8c555625 | 1362 | |
73042f01 | 1363 | *(pList[globalIndex]+2) = *(pList[globalIndex]+1); |
1364 | *(pList[globalIndex]+1) = label; | |
8c555625 | 1365 | } |
1366 | else{ | |
73042f01 | 1367 | *(pList[globalIndex]+5) = signal(ip,it); |
1368 | *(pList[globalIndex]+2) = label; | |
8c555625 | 1369 | } |
1370 | } | |
1371 | ||
1372 | } // end of loop over pads | |
1373 | } // end of loop over time bins | |
1374 | ||
1375 | ||
1376 | ||
8c555625 | 1377 | }//end of GetList |
1378 | //___________________________________________________________________ | |
1379 | void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH, | |
1380 | Stat_t ntracks,TObjArray **row) | |
1381 | { | |
1382 | ||
1383 | //----------------------------------------------------------------- | |
1384 | // Prepares the sector digitization, creates the vectors of | |
1385 | // tracks for each row of this sector. The track vector | |
1386 | // contains the track label and the position of electrons. | |
1387 | //----------------------------------------------------------------- | |
1388 | ||
1389 | //----------------------------------------------------------------- | |
1390 | // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl | |
1391 | //----------------------------------------------------------------- | |
1392 | ||
cc80f89e | 1393 | Float_t gasgain = fTPCParam->GetGasGain(); |
8c555625 | 1394 | Int_t i; |
cc80f89e | 1395 | Float_t xyz[4]; |
8c555625 | 1396 | |
1397 | AliTPChit *tpcHit; // pointer to a sigle TPC hit | |
1398 | ||
1399 | //---------------------------------------------- | |
1400 | // Create TObjArray-s, one for each row, | |
1401 | // each TObjArray will store the TVectors | |
1402 | // of electrons, one TVector per each track. | |
1403 | //---------------------------------------------- | |
1404 | ||
f74bb6f5 | 1405 | Int_t *nofElectrons = new Int_t [nrows]; // electron counter for each row |
1406 | TVector **tracks = new TVector* [nrows]; //pointers to the track vectors | |
8c555625 | 1407 | for(i=0; i<nrows; i++){ |
1408 | row[i] = new TObjArray; | |
f74bb6f5 | 1409 | nofElectrons[i]=0; |
1410 | tracks[i]=0; | |
8c555625 | 1411 | } |
8c555625 | 1412 | |
37831078 | 1413 | |
1414 | ||
8c555625 | 1415 | //-------------------------------------------------------------------- |
1416 | // Loop over tracks, the "track" contains the full history | |
1417 | //-------------------------------------------------------------------- | |
1418 | ||
1419 | Int_t previousTrack,currentTrack; | |
1420 | previousTrack = -1; // nothing to store so far! | |
1421 | ||
1422 | for(Int_t track=0;track<ntracks;track++){ | |
1423 | ||
1424 | ResetHits(); | |
1425 | ||
1426 | TH->GetEvent(track); // get next track | |
1427 | Int_t nhits = fHits->GetEntriesFast(); // get number of hits for this track | |
1428 | ||
1429 | if(nhits == 0) continue; // no hits in the TPC for this track | |
1430 | ||
1431 | //-------------------------------------------------------------- | |
1432 | // Loop over hits | |
1433 | //-------------------------------------------------------------- | |
1434 | ||
1435 | for(Int_t hit=0;hit<nhits;hit++){ | |
1436 | ||
1437 | tpcHit = (AliTPChit*)fHits->UncheckedAt(hit); // get a pointer to a hit | |
1438 | ||
1439 | Int_t sector=tpcHit->fSector; // sector number | |
cc80f89e | 1440 | if(sector != isec) continue; |
8c555625 | 1441 | |
94de3818 | 1442 | currentTrack = tpcHit->Track(); // track number |
8c555625 | 1443 | if(currentTrack != previousTrack){ |
1444 | ||
1445 | // store already filled fTrack | |
1446 | ||
1447 | for(i=0;i<nrows;i++){ | |
1448 | if(previousTrack != -1){ | |
73042f01 | 1449 | if(nofElectrons[i]>0){ |
cc80f89e | 1450 | TVector &v = *tracks[i]; |
8c555625 | 1451 | v(0) = previousTrack; |
73042f01 | 1452 | tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary |
cc80f89e | 1453 | row[i]->Add(tracks[i]); |
8c555625 | 1454 | } |
1455 | else{ | |
cc80f89e | 1456 | delete tracks[i]; // delete empty TVector |
1457 | tracks[i]=0; | |
8c555625 | 1458 | } |
1459 | } | |
1460 | ||
73042f01 | 1461 | nofElectrons[i]=0; |
cc80f89e | 1462 | tracks[i] = new TVector(481); // TVectors for the next fTrack |
8c555625 | 1463 | |
1464 | } // end of loop over rows | |
1465 | ||
1466 | previousTrack=currentTrack; // update track label | |
1467 | } | |
1468 | ||
73042f01 | 1469 | Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons) |
8c555625 | 1470 | |
1471 | //--------------------------------------------------- | |
1472 | // Calculate the electron attachment probability | |
1473 | //--------------------------------------------------- | |
1474 | ||
cc80f89e | 1475 | |
94de3818 | 1476 | Float_t time = 1.e6*(fTPCParam->GetZLength()-TMath::Abs(tpcHit->Z())) |
cc80f89e | 1477 | /fTPCParam->GetDriftV(); |
8c555625 | 1478 | // in microseconds! |
73042f01 | 1479 | Float_t attProb = fTPCParam->GetAttCoef()* |
8c555625 | 1480 | fTPCParam->GetOxyCont()*time; // fraction! |
1481 | ||
1482 | //----------------------------------------------- | |
1483 | // Loop over electrons | |
1484 | //----------------------------------------------- | |
cc80f89e | 1485 | Int_t index[3]; |
1486 | index[1]=isec; | |
73042f01 | 1487 | for(Int_t nel=0;nel<qI;nel++){ |
8c555625 | 1488 | // skip if electron lost due to the attachment |
73042f01 | 1489 | if((gRandom->Rndm(0)) < attProb) continue; // electron lost! |
94de3818 | 1490 | xyz[0]=tpcHit->X(); |
1491 | xyz[1]=tpcHit->Y(); | |
1492 | xyz[2]=tpcHit->Z(); | |
cc80f89e | 1493 | xyz[3]= (Float_t) (-gasgain*TMath::Log(gRandom->Rndm())); |
1494 | index[0]=1; | |
1495 | ||
1496 | TransportElectron(xyz,index); //MI change -august | |
73042f01 | 1497 | Int_t rowNumber; |
cc80f89e | 1498 | fTPCParam->GetPadRow(xyz,index); //MI change august |
73042f01 | 1499 | rowNumber = index[2]; |
cc80f89e | 1500 | //transform position to local digit coordinates |
1501 | //relative to nearest pad row | |
73042f01 | 1502 | if ((rowNumber<0)||rowNumber>=fTPCParam->GetNRow(isec)) continue; |
1503 | nofElectrons[rowNumber]++; | |
8c555625 | 1504 | //---------------------------------- |
1505 | // Expand vector if necessary | |
1506 | //---------------------------------- | |
73042f01 | 1507 | if(nofElectrons[rowNumber]>120){ |
1508 | Int_t range = tracks[rowNumber]->GetNrows(); | |
1509 | if((nofElectrons[rowNumber])>(range-1)/4){ | |
cc80f89e | 1510 | |
73042f01 | 1511 | tracks[rowNumber]->ResizeTo(range+400); // Add 100 electrons |
fe4da5cc | 1512 | } |
1513 | } | |
1514 | ||
73042f01 | 1515 | TVector &v = *tracks[rowNumber]; |
1516 | Int_t idx = 4*nofElectrons[rowNumber]-3; | |
8c555625 | 1517 | |
cc80f89e | 1518 | v(idx)= xyz[0]; // X - pad row coordinate |
1519 | v(idx+1)=xyz[1]; // Y - pad coordinate (along the pad-row) | |
1520 | v(idx+2)=xyz[2]; // Z - time bin coordinate | |
1521 | v(idx+3)=xyz[3]; // avalanche size | |
8c555625 | 1522 | } // end of loop over electrons |
1523 | ||
1524 | } // end of loop over hits | |
1525 | } // end of loop over tracks | |
1526 | ||
1527 | // | |
1528 | // store remaining track (the last one) if not empty | |
1529 | // | |
1530 | ||
1531 | for(i=0;i<nrows;i++){ | |
73042f01 | 1532 | if(nofElectrons[i]>0){ |
cc80f89e | 1533 | TVector &v = *tracks[i]; |
8c555625 | 1534 | v(0) = previousTrack; |
73042f01 | 1535 | tracks[i]->ResizeTo(4*nofElectrons[i]+1); // shrink if necessary |
cc80f89e | 1536 | row[i]->Add(tracks[i]); |
fe4da5cc | 1537 | } |
1538 | else{ | |
cc80f89e | 1539 | delete tracks[i]; |
1540 | tracks[i]=0; | |
8c555625 | 1541 | } |
1542 | } | |
1543 | ||
cc80f89e | 1544 | delete [] tracks; |
73042f01 | 1545 | delete [] nofElectrons; |
8c555625 | 1546 | |
8c555625 | 1547 | |
cc80f89e | 1548 | } // end of MakeSector |
8c555625 | 1549 | |
fe4da5cc | 1550 | |
1551 | //_____________________________________________________________________________ | |
1552 | void AliTPC::Init() | |
1553 | { | |
1554 | // | |
1555 | // Initialise TPC detector after definition of geometry | |
1556 | // | |
1557 | Int_t i; | |
1558 | // | |
1559 | printf("\n"); | |
1560 | for(i=0;i<35;i++) printf("*"); | |
1561 | printf(" TPC_INIT "); | |
1562 | for(i=0;i<35;i++) printf("*"); | |
1563 | printf("\n"); | |
1564 | // | |
1565 | for(i=0;i<80;i++) printf("*"); | |
1566 | printf("\n"); | |
1567 | } | |
1568 | ||
1569 | //_____________________________________________________________________________ | |
1570 | void AliTPC::MakeBranch(Option_t* option) | |
1571 | { | |
1572 | // | |
1573 | // Create Tree branches for the TPC. | |
1574 | // | |
1575 | Int_t buffersize = 4000; | |
1576 | char branchname[10]; | |
1577 | sprintf(branchname,"%s",GetName()); | |
1578 | ||
1579 | AliDetector::MakeBranch(option); | |
1580 | ||
73042f01 | 1581 | char *d = strstr(option,"D"); |
fe4da5cc | 1582 | |
73042f01 | 1583 | if (fDigits && gAlice->TreeD() && d) { |
fe4da5cc | 1584 | gAlice->TreeD()->Branch(branchname,&fDigits, buffersize); |
1585 | printf("Making Branch %s for digits\n",branchname); | |
1586 | } | |
fe4da5cc | 1587 | } |
1588 | ||
1589 | //_____________________________________________________________________________ | |
1590 | void AliTPC::ResetDigits() | |
1591 | { | |
1592 | // | |
1593 | // Reset number of digits and the digits array for this detector | |
fe4da5cc | 1594 | // |
1595 | fNdigits = 0; | |
cc80f89e | 1596 | if (fDigits) fDigits->Clear(); |
fe4da5cc | 1597 | } |
1598 | ||
1599 | //_____________________________________________________________________________ | |
1600 | void AliTPC::SetSecAL(Int_t sec) | |
1601 | { | |
8c555625 | 1602 | //--------------------------------------------------- |
fe4da5cc | 1603 | // Activate/deactivate selection for lower sectors |
8c555625 | 1604 | //--------------------------------------------------- |
1605 | ||
1606 | //----------------------------------------------------------------- | |
1607 | // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl | |
1608 | //----------------------------------------------------------------- | |
1609 | ||
fe4da5cc | 1610 | fSecAL = sec; |
1611 | } | |
1612 | ||
1613 | //_____________________________________________________________________________ | |
1614 | void AliTPC::SetSecAU(Int_t sec) | |
1615 | { | |
8c555625 | 1616 | //---------------------------------------------------- |
fe4da5cc | 1617 | // Activate/deactivate selection for upper sectors |
8c555625 | 1618 | //--------------------------------------------------- |
1619 | ||
1620 | //----------------------------------------------------------------- | |
1621 | // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl | |
1622 | //----------------------------------------------------------------- | |
1623 | ||
fe4da5cc | 1624 | fSecAU = sec; |
1625 | } | |
1626 | ||
1627 | //_____________________________________________________________________________ | |
1628 | void AliTPC::SetSecLows(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6) | |
1629 | { | |
8c555625 | 1630 | //---------------------------------------- |
fe4da5cc | 1631 | // Select active lower sectors |
8c555625 | 1632 | //---------------------------------------- |
1633 | ||
1634 | //----------------------------------------------------------------- | |
1635 | // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl | |
1636 | //----------------------------------------------------------------- | |
1637 | ||
fe4da5cc | 1638 | fSecLows[0] = s1; |
1639 | fSecLows[1] = s2; | |
1640 | fSecLows[2] = s3; | |
1641 | fSecLows[3] = s4; | |
1642 | fSecLows[4] = s5; | |
1643 | fSecLows[5] = s6; | |
1644 | } | |
1645 | ||
1646 | //_____________________________________________________________________________ | |
1647 | void AliTPC::SetSecUps(Int_t s1,Int_t s2,Int_t s3,Int_t s4,Int_t s5, Int_t s6, | |
1648 | Int_t s7, Int_t s8 ,Int_t s9 ,Int_t s10, | |
1649 | Int_t s11 , Int_t s12) | |
1650 | { | |
8c555625 | 1651 | //-------------------------------- |
fe4da5cc | 1652 | // Select active upper sectors |
8c555625 | 1653 | //-------------------------------- |
1654 | ||
1655 | //----------------------------------------------------------------- | |
1656 | // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl | |
1657 | //----------------------------------------------------------------- | |
1658 | ||
fe4da5cc | 1659 | fSecUps[0] = s1; |
1660 | fSecUps[1] = s2; | |
1661 | fSecUps[2] = s3; | |
1662 | fSecUps[3] = s4; | |
1663 | fSecUps[4] = s5; | |
1664 | fSecUps[5] = s6; | |
1665 | fSecUps[6] = s7; | |
1666 | fSecUps[7] = s8; | |
1667 | fSecUps[8] = s9; | |
1668 | fSecUps[9] = s10; | |
1669 | fSecUps[10] = s11; | |
1670 | fSecUps[11] = s12; | |
1671 | } | |
1672 | ||
1673 | //_____________________________________________________________________________ | |
1674 | void AliTPC::SetSens(Int_t sens) | |
1675 | { | |
8c555625 | 1676 | |
1677 | //------------------------------------------------------------- | |
1678 | // Activates/deactivates the sensitive strips at the center of | |
1679 | // the pad row -- this is for the space-point resolution calculations | |
1680 | //------------------------------------------------------------- | |
1681 | ||
1682 | //----------------------------------------------------------------- | |
1683 | // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl | |
1684 | //----------------------------------------------------------------- | |
1685 | ||
fe4da5cc | 1686 | fSens = sens; |
1687 | } | |
4b0fdcad | 1688 | |
73042f01 | 1689 | void AliTPC::SetSide(Float_t side=0.) |
4b0fdcad | 1690 | { |
73042f01 | 1691 | // choice of the TPC side |
1692 | ||
4b0fdcad | 1693 | fSide = side; |
1694 | ||
1695 | } | |
1283eee5 | 1696 | //____________________________________________________________________________ |
1697 | void AliTPC::SetGasMixt(Int_t nc,Int_t c1,Int_t c2,Int_t c3,Float_t p1, | |
1698 | Float_t p2,Float_t p3) | |
1699 | { | |
fe4da5cc | 1700 | |
73042f01 | 1701 | // gax mixture definition |
1702 | ||
1283eee5 | 1703 | fNoComp = nc; |
1704 | ||
1705 | fMixtComp[0]=c1; | |
1706 | fMixtComp[1]=c2; | |
1707 | fMixtComp[2]=c3; | |
1708 | ||
1709 | fMixtProp[0]=p1; | |
1710 | fMixtProp[1]=p2; | |
1711 | fMixtProp[2]=p3; | |
1712 | ||
1713 | ||
cc80f89e | 1714 | } |
1715 | //_____________________________________________________________________________ | |
1716 | ||
1717 | void AliTPC::TransportElectron(Float_t *xyz, Int_t *index) | |
1718 | { | |
1719 | // | |
1720 | // electron transport taking into account: | |
1721 | // 1. diffusion, | |
1722 | // 2.ExB at the wires | |
1723 | // 3. nonisochronity | |
1724 | // | |
1725 | // xyz and index must be already transformed to system 1 | |
1726 | // | |
1727 | ||
1728 | fTPCParam->Transform1to2(xyz,index); | |
1729 | ||
1730 | //add diffusion | |
1731 | Float_t driftl=xyz[2]; | |
1732 | if(driftl<0.01) driftl=0.01; | |
1733 | driftl=TMath::Sqrt(driftl); | |
73042f01 | 1734 | Float_t sigT = driftl*(fTPCParam->GetDiffT()); |
1735 | Float_t sigL = driftl*(fTPCParam->GetDiffL()); | |
1736 | xyz[0]=gRandom->Gaus(xyz[0],sigT); | |
1737 | xyz[1]=gRandom->Gaus(xyz[1],sigT); | |
1738 | xyz[2]=gRandom->Gaus(xyz[2],sigL); | |
cc80f89e | 1739 | |
1740 | // ExB | |
1741 | ||
1742 | if (fTPCParam->GetMWPCReadout()==kTRUE){ | |
1743 | Float_t x1=xyz[0]; | |
1744 | fTPCParam->Transform2to2NearestWire(xyz,index); | |
1745 | Float_t dx=xyz[0]-x1; | |
1746 | xyz[1]+=dx*(fTPCParam->GetOmegaTau()); | |
1747 | } | |
1748 | //add nonisochronity (not implemented yet) | |
1749 | ||
1283eee5 | 1750 | } |
fe4da5cc | 1751 | //_____________________________________________________________________________ |
1752 | void AliTPC::Streamer(TBuffer &R__b) | |
1753 | { | |
1754 | // | |
1755 | // Stream an object of class AliTPC. | |
1756 | // | |
1757 | if (R__b.IsReading()) { | |
1758 | Version_t R__v = R__b.ReadVersion(); if (R__v) { } | |
1759 | AliDetector::Streamer(R__b); | |
1760 | if (R__v < 2) return; | |
1761 | R__b >> fNsectors; | |
fe4da5cc | 1762 | } else { |
1763 | R__b.WriteVersion(AliTPC::IsA()); | |
1764 | AliDetector::Streamer(R__b); | |
1765 | R__b << fNsectors; | |
fe4da5cc | 1766 | } |
1767 | } | |
1768 | ||
fe4da5cc | 1769 | ClassImp(AliTPCdigit) |
1770 | ||
1771 | //_____________________________________________________________________________ | |
1772 | AliTPCdigit::AliTPCdigit(Int_t *tracks, Int_t *digits): | |
1773 | AliDigit(tracks) | |
1774 | { | |
1775 | // | |
1776 | // Creates a TPC digit object | |
1777 | // | |
1778 | fSector = digits[0]; | |
1779 | fPadRow = digits[1]; | |
1780 | fPad = digits[2]; | |
1781 | fTime = digits[3]; | |
1782 | fSignal = digits[4]; | |
1783 | } | |
1784 | ||
1785 | ||
1786 | ClassImp(AliTPChit) | |
1787 | ||
1788 | //_____________________________________________________________________________ | |
1789 | AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits): | |
1790 | AliHit(shunt,track) | |
1791 | { | |
1792 | // | |
1793 | // Creates a TPC hit object | |
1794 | // | |
1795 | fSector = vol[0]; | |
1796 | fPadRow = vol[1]; | |
1797 | fX = hits[0]; | |
1798 | fY = hits[1]; | |
1799 | fZ = hits[2]; | |
1800 | fQ = hits[3]; | |
1801 | } | |
1802 | ||
8c555625 | 1803 |