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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$Log$
134da240 18Revision 1.14 2002/03/29 06:57:45 kowal2
19Restored backward compatibility to use the hits from Dec. 2000 production.
20
7a09f434 21Revision 1.13 2002/03/18 17:59:13 kowal2
22Chnges in the pad geometry - 3 pad lengths introduced.
23
f03e3423 24Revision 1.12 2002/02/05 09:12:26 hristov
25Small mods for gcc 3.02
26
bcc5d57d 27Revision 1.11 2000/11/02 07:33:48 kowal2
28Automatic streamer generation.
29
0bbae0f2 30Revision 1.10 2000/07/10 20:57:39 hristov
31Update of TPC code and macros by M.Kowalski
32
37831078 33Revision 1.9 2000/06/30 12:07:50 kowal2
34Updated from the TPC-PreRelease branch
35
73042f01 36Revision 1.8.4.4 2000/06/26 07:39:42 kowal2
37Changes to obey the coding rules
38
39Revision 1.8.4.3 2000/06/25 08:38:41 kowal2
40Splitted from AliTPCtracking
41
42Revision 1.8.4.2 2000/06/14 16:48:24 kowal2
43Parameter setting improved. Removed compiler warnings
44
45Revision 1.8.4.1 2000/06/09 07:12:21 kowal2
46
47Updated defaults
48
49Revision 1.8 2000/04/17 09:37:33 kowal2
50removed obsolete AliTPCDigitsDisplay.C
51
cc80f89e 52Revision 1.7.8.2 2000/04/10 08:44:51 kowal2
53
54New transformations added
55Different pad and pad-rows geometries for different sectors
56
57Revision 1.7.8.1 2000/04/10 07:56:53 kowal2
58Not used anymore - removed
59
60Revision 1.7 1999/10/08 13:10:35 fca
61Values in SetDefault are in radiants
62
4d89658a 63Revision 1.6 1999/10/08 06:27:59 fca
64Defaults updated
65
683f9fec 66Revision 1.5 1999/10/05 17:18:27 fca
67Correct GetWire check on even/odd fnWires
68
ae4cbe70 69Revision 1.4 1999/09/29 09:24:34 fca
70Introduction of the Copyright and cvs Log
71
4c039060 72*/
73
8c555625 74///////////////////////////////////////////////////////////////////////
75// Manager and of geomety classes for set: TPC //
76// //
1283eee5 77// !sectors are numbered from 0 //
78// !pad rows are numbered from 0 //
79//
80// 12.6. changed z relative
8c555625 81// Origin: Marian Ivanov, Uni. of Bratislava, ivanov@fmph.uniba.sk //
82// //
83///////////////////////////////////////////////////////////////////////
84
73042f01 85//
8c555625 86
87#include <iostream.h>
88#include <TMath.h>
1283eee5 89#include <TObject.h>
cc80f89e 90#include <TRandom.h>
1283eee5 91#include <AliTPCParam.h>
8c555625 92
93
cc80f89e 94
8c555625 95
73042f01 96ClassImp(AliTPCParam)
8c555625 97
98
99//___________________________________________
100AliTPCParam::AliTPCParam()
101{
cc80f89e 102 //
103 //constructor sets the default parameters
104 //
105
106 fResponseBin = 0;
107 fResponseWeight = 0;
108 fRotAngle = 0;
7a09f434 109 SetTitle("75x40_100x60_150x60");
8c555625 110 SetDefault();
111}
112
cc80f89e 113AliTPCParam::~AliTPCParam()
1283eee5 114{
115 //
cc80f89e 116 //destructor deletes some dynamicaly alocated variables
117 //
118
119 if (fResponseBin!=0) delete [] fResponseBin;
120 if (fResponseWeight!=0) delete [] fResponseWeight;
121 if (fRotAngle !=0) delete [] fRotAngle;
122
1283eee5 123}
124
125
cc80f89e 126
127
128Int_t AliTPCParam::Transform0to1(Float_t *xyz, Int_t * index) const
129{
130 //
131 // calculates sector number (index[1], undefined on input)
132 // xyz intact
133 //
134
135 Float_t angle,x1;
136 Int_t sector;
137 Float_t r = TMath::Sqrt(xyz[0]*xyz[0]+xyz[1]*xyz[1]);
138 if ((xyz[0]==0)&&(xyz[1]==0)) angle = 0.;
139 else
8c555625 140 {
cc80f89e 141 angle =TMath::ASin(xyz[1]/r);
142 if (xyz[0]<0) angle=TMath::Pi()-angle;
143 if ( (xyz[0]>0) && (xyz[1]<0) ) angle=2*TMath::Pi()+angle;
144 }
3c0f9266 145
cc80f89e 146 sector=Int_t((angle-fInnerAngleShift)/fInnerAngle);
147
8c555625 148 Float_t cos,sin;
cc80f89e 149 AdjustCosSin(sector,cos,sin);
150 x1=xyz[0]*cos + xyz[1]*sin;
8c555625 151
cc80f89e 152 if (x1>fOuterRadiusLow)
153 {
154 sector=Int_t((angle-fOuterAngleShift)/fOuterAngle)+fNInnerSector;
155 if (xyz[2]<0) sector+=(fNOuterSector>>1);
156 }
8c555625 157 else
1283eee5 158 if (xyz[2]<0) sector+=(fNInnerSector>>1);
cc80f89e 159 index[1]=sector; // calculated sector number
160 index[0]=1; // indicates system after transformation
161 return sector;
162}
1283eee5 163
cc80f89e 164Bool_t AliTPCParam::Transform(Float_t *xyz, Int_t *index, Int_t* oindex)
165{
166 //transformation from input coodination system to output coordination system
167 switch (index[0]){
168 case 0:
169 break;
170 };
171
172 return kFALSE;
173
174}
175
176Int_t AliTPCParam::GetPadRow(Float_t *xyz, Int_t *index) const
177{
178 //
179 //calculates pad row of point xyz - transformation to system 8 (digit system)
180 //
181 Int_t system = index[0];
182 if (0==system) {
183 Transform0to1(xyz,index);
184 system=1;
185 }
186 if (1==system) {
187 Transform1to2(xyz,index);
188 system=2;
189 }
190
191 if (fGeometryType==0){ //straight row
192 if (2==system) {
193 Transform2to3(xyz,index);
194 system=3;
195 }
196 if (3==system) {
197 Transform3to4(xyz,index);
198 system=4;
8c555625 199 }
cc80f89e 200 if (4==system) {
201 Transform4to8(xyz,index);
202 system=8;
8c555625 203 }
cc80f89e 204 if (8==system) {
205 index[0]=8;
206 return index[2];
207 }
8c555625 208 }
cc80f89e 209
210 if (fGeometryType==1){ //cylindrical geometry
211 if (2==system) {
212 Transform2to5(xyz,index);
213 system=5;
214 }
215 if (5==system) {
216 Transform2to3(xyz,index);
217 system=6;
218 }
219 if (6==system) {
220 Transform3to4(xyz,index);
221 system=7;
222 }
223 if (8==system) {
224 index[0]=8;
225 return index[2];
226 }
227 }
228 index[0]=system;
229 return -1; //if no reasonable system
8c555625 230}
231
cc80f89e 232void AliTPCParam::SetSectorAngles(Float_t innerangle, Float_t innershift, Float_t outerangle,
233 Float_t outershift)
8c555625 234{
cc80f89e 235 //
236 // set opening angles
73042f01 237 const static Float_t kDegtoRad = 0.01745329251994;
cc80f89e 238 fInnerAngle = innerangle; //opening angle of Inner sector
239 fInnerAngleShift = innershift; //shift of first inner sector center to the 0
240 fOuterAngle = outerangle; //opening angle of outer sector
241 fOuterAngleShift = outershift; //shift of first sector center to the 0
242 fInnerAngle *=kDegtoRad;
243 fInnerAngleShift *=kDegtoRad;
244 fOuterAngle *=kDegtoRad;
245 fOuterAngleShift *=kDegtoRad;
8c555625 246}
cc80f89e 247
248Float_t AliTPCParam::GetInnerAngle() const
8c555625 249{
cc80f89e 250 //return angle
251 return fInnerAngle;
252
8c555625 253}
254
cc80f89e 255Float_t AliTPCParam::GetInnerAngleShift() const
256{
257 //return angle
258 return fInnerAngleShift;
8c555625 259}
cc80f89e 260Float_t AliTPCParam::GetOuterAngle() const
261{
262 //return angle
263 return fOuterAngle;
264}
265Float_t AliTPCParam::GetOuterAngleShift() const
266{
267 //return angle
268
269 return fOuterAngleShift;
270}
271
8c555625 272
273Int_t AliTPCParam::GetIndex(Int_t sector, Int_t row)
274{
275 //
276 //give index of the given sector and pad row
277 //no control if the sectors and rows are reasonable !!!
278 //
cc80f89e 279 if (sector<fNInnerSector) return sector*fNRowLow+row;
280 return (fNInnerSector*fNRowLow)+(sector-fNInnerSector)*fNRowUp+row;
8c555625 281}
282
cc80f89e 283Bool_t AliTPCParam::AdjustSectorRow(Int_t index, Int_t & sector, Int_t &row) const
8c555625 284{
285 //
286 //return sector and padrow for given index
cc80f89e 287 //if index is reasonable returns true else return false
8c555625 288 //
289 if ( (index<0) || (index>fNtRows)) return kFALSE;
cc80f89e 290 Int_t outindex = fNInnerSector*fNRowLow;
8c555625 291 if (index<outindex) {
cc80f89e 292 sector = index/fNRowLow;
293 row = index - sector*fNRowLow;
8c555625 294 return kTRUE;
295 }
296 index-= outindex;
cc80f89e 297 sector = index/fNRowUp;
298 row = index - sector*fNRowUp;
299 sector += fNInnerSector;
8c555625 300 return kTRUE;
301}
302
cc80f89e 303void AliTPCParam::SetDefault()
8c555625 304{
305 //
cc80f89e 306 //set default parameters
8c555625 307 //
37831078 308 //const static Int_t kMaxRows=600;
73042f01 309 //
310 //sector default parameters
311 //
7a09f434 312 const static Float_t kInnerRadiusLow = 82.97;
313 const static Float_t kInnerRadiusUp = 133.17;
314 const static Float_t kOuterRadiusLow = 133.58;
315 const static Float_t kOuterRadiusUp = 247.78;
73042f01 316 const static Float_t kInnerAngle = 20; // 20 degrees
317 const static Float_t kInnerAngleShift = 10;
318 const static Float_t kOuterAngle = 20; // 20 degrees
319 const static Float_t kOuterAngleShift = 10;
320 const static Float_t kInnerFrameSpace = 1.5;
321 const static Float_t kOuterFrameSpace = 1.5;
37831078 322 const static Float_t kInnerWireMount = 1.370825926;
323 const static Float_t kOuterWireMount = 1.370825926;
73042f01 324 const static Float_t kZLength =250.;
325 const static Int_t kGeometryType = 0; //straight rows
f03e3423 326 const static Int_t kNRowLow = 63;
327 const static Int_t kNRowUp1 = 64;
328 const static Int_t kNRowUp2 = 32;
329 const static Int_t kNRowUp = 96;
73042f01 330 //
331 //wires default parameters
332 //
333 const static Int_t kNInnerWiresPerPad = 3;
334 const static Int_t kInnerDummyWire = 2;
f03e3423 335 const static Float_t kInnerWWPitch = 0.25;
134da240 336 const static Float_t kRInnerFirstWire = 84.445;
337 const static Float_t kRInnerLastWire = 132.445;
73042f01 338 const static Float_t kInnerOffWire = 0.5;
f03e3423 339 const static Int_t kNOuter1WiresPerPad = 4;
340 const static Int_t kNOuter2WiresPerPad = 6;
341 const static Float_t kOuterWWPitch = 0.25;
134da240 342 const static Float_t kROuterFirstWire = 134.305;
343 const static Float_t kROuterLastWire = 247.055;
73042f01 344 const static Int_t kOuterDummyWire = 2;
345 const static Float_t kOuterOffWire = 0.5;
346 //
347 //pad default parameters
348 //
349 const static Float_t kInnerPadPitchLength = 0.75;
350 const static Float_t kInnerPadPitchWidth = 0.40;
351 const static Float_t kInnerPadLength = 0.75;
352 const static Float_t kInnerPadWidth = 0.40;
f03e3423 353 const static Float_t kOuter1PadPitchLength = 1.0;
73042f01 354 const static Float_t kOuterPadPitchWidth = 0.6;
f03e3423 355 const static Float_t kOuter1PadLength = 1.0;
73042f01 356 const static Float_t kOuterPadWidth = 0.6;
f03e3423 357 const static Float_t kOuter2PadPitchLength = 1.5;
358 const static Float_t kOuter2PadLength = 1.5;
359
73042f01 360 const static Bool_t kBMWPCReadout = kTRUE; //MWPC readout - another possibility GEM
361 const static Int_t kNCrossRows = 1; //number of rows to cross-talk
362
363 //
364 //gas default parameters
365 //
366 const static Float_t kDiffT = 2.2e-2;
367 const static Float_t kDiffL = 2.2e-2;
368 const static Float_t kGasGain = 2.e4;
369 const static Float_t kDriftV =2.83e6;
370 const static Float_t kOmegaTau = 0.145;
371 const static Float_t kAttCoef = 250.;
372 const static Float_t kOxyCont = 5.e-6;
373 //
374 //electronic default parameters
375 //
376 const static Float_t kPadCoupling=0.5;
377 const static Int_t kZeroSup=2;
378 const static Float_t kNoise = 1000;
379 const static Float_t kChipGain = 12;
380 const static Float_t kChipNorm = 0.4;
381 const static Float_t kTSample = 2.e-7;
382 const static Float_t kTFWHM = 1.9e-7; //fwhm of charge distribution
383 const static Int_t kMaxTBin =445;
384 const static Int_t kADCSat =1024;
385 const static Float_t kADCDynRange =2000.;
386 //
387 //
388 //
389 const static Float_t kBField =0.2;
390 const static Float_t kNPrimLoss =10.9;
391 const static Float_t kNTotalLoss =39.9;
392 //
393 //response constants
394 //
395 const static Int_t kNResponseMax=100;
396 const static Float_t kResponseThreshold=0.01;
8c555625 397 fbStatus = kFALSE;
8c555625 398 //
cc80f89e 399 //set sector parameters
400 //
401 SetInnerRadiusLow(kInnerRadiusLow);
402 SetOuterRadiusLow(kOuterRadiusLow);
403 SetInnerRadiusUp(kInnerRadiusUp);
404 SetOuterRadiusUp(kOuterRadiusUp);
405 SetInnerFrameSpace(kInnerFrameSpace);
406 SetOuterFrameSpace(kOuterFrameSpace);
407 SetInnerWireMount(kInnerWireMount);
408 SetOuterWireMount(kOuterWireMount);
409 SetSectorAngles(kInnerAngle,kInnerAngleShift,kOuterAngle,kOuterAngleShift);
410 SetZLength(kZLength);
411 SetGeometryType(kGeometryType);
f03e3423 412 SetRowNLow(kNRowLow);
413 SetRowNUp1 (kNRowUp1);
414 SetRowNUp2(kNRowUp2);
415 SetRowNUp(kNRowUp);
cc80f89e 416 //
417 //set wire parameters
418 //
419 SetInnerNWires(kNInnerWiresPerPad);
420 SetInnerDummyWire(kInnerDummyWire);
421 SetInnerOffWire(kInnerOffWire);
f03e3423 422 SetOuter1NWires(kNOuter1WiresPerPad);
423 SetOuter2NWire(kNOuter2WiresPerPad);
cc80f89e 424 SetOuterDummyWire(kOuterDummyWire);
425 SetOuterOffWire(kOuterOffWire);
f03e3423 426 SetInnerWWPitch(kInnerWWPitch);
427 SetRInnerFirstWire(kRInnerFirstWire);
428 SetRInnerLastWire(kRInnerLastWire);
429 SetOuterWWPitch(kOuterWWPitch);
430 SetROuterFirstWire(kROuterFirstWire);
431 SetROuterLastWire(kROuterLastWire);
cc80f89e 432 //
433 //set pad parameter
1283eee5 434 //
cc80f89e 435 SetInnerPadPitchLength(kInnerPadPitchLength);
436 SetInnerPadPitchWidth(kInnerPadPitchWidth);
437 SetInnerPadLength(kInnerPadLength);
438 SetInnerPadWidth(kInnerPadWidth);
f03e3423 439 SetOuter1PadPitchLength(kOuter1PadPitchLength);
440 SetOuter2PadPitchLength(kOuter2PadPitchLength);
cc80f89e 441 SetOuterPadPitchWidth(kOuterPadPitchWidth);
f03e3423 442 SetOuter1PadLength(kOuter1PadLength);
443 SetOuter2PadLength(kOuter2PadLength);
cc80f89e 444 SetOuterPadWidth(kOuterPadWidth);
445 SetMWPCReadout(kBMWPCReadout);
446 SetNCrossRows(kNCrossRows);
1283eee5 447 //
cc80f89e 448 //set gas paremeters
449 //
450 SetDiffT(kDiffT);
451 SetDiffL(kDiffL);
452 SetGasGain(kGasGain);
453 SetDriftV(kDriftV);
454 SetOmegaTau(kOmegaTau);
455 SetAttCoef(kAttCoef);
456 SetOxyCont(kOxyCont);
457 //
458 //set electronivc parameters
459 //
460 SetPadCoupling(kPadCoupling);
461 SetZeroSup(kZeroSup);
462 SetNoise(kNoise);
463 SetChipGain(kChipGain);
464 SetChipNorm(kChipNorm);
465 SetTSample(kTSample);
466 SetTFWHM(kTFWHM);
467 SetMaxTBin(kMaxTBin);
468 SetADCSat(kADCSat);
469 SetADCDynRange(kADCDynRange);
470 //set magnetic field
471 SetBField(kBField);
472 SetNPrimLoss(kNPrimLoss);
473 SetNTotalLoss(kNTotalLoss);
474 //
475 //set response parameters
476 //
477 SetNResponseMax(kNResponseMax);
bcc5d57d 478 SetResponseThreshold(static_cast<int>(kResponseThreshold));
8c555625 479}
cc80f89e 480
8c555625 481
482Bool_t AliTPCParam::Update()
483{
1283eee5 484 //
485 // update some calculated parameter which must be updated after changing "base"
486 // parameters
487 // for example we can change size of pads and according this recalculate number
488 // of pad rows, number of of pads in given row ....
489 //
73042f01 490 const Float_t kQel = 1.602e-19; // elementary charge
8c555625 491 fbStatus = kFALSE;
1283eee5 492
493 Int_t i,j; //loop variables because HP
494 //-----------------Sector section------------------------------------------
495 //calclulate number of sectors
cc80f89e 496 fNInnerSector = Int_t(4*TMath::Pi()/fInnerAngle+0.2);
497 // number of inner sectors - factor 0.2 to don't be influnced by inprecision
1283eee5 498 if (fNInnerSector%2) return kFALSE;
499 fNOuterSector = Int_t(4*TMath::Pi()/fOuterAngle+0.2);
500 if (fNOuterSector%2) return kFALSE;
501 fNSector = fNInnerSector+fNOuterSector;
cc80f89e 502
503 if (fRotAngle!=0) delete [] fRotAngle;
504 fRotAngle = new Float_t[4*fNSector];
1283eee5 505 //calculate sin and cosine of rotations angle
506 //sectors angles numbering from 0
cc80f89e 507
508 j=fNInnerSector*2;
1283eee5 509 Float_t angle = fInnerAngleShift;
cc80f89e 510 for (i=0; j<fNInnerSector*4; i+=4, j+=4 , angle +=fInnerAngle){
1283eee5 511 fRotAngle[i]=TMath::Cos(angle);
512 fRotAngle[i+1]=TMath::Sin(angle);
513 fRotAngle[j] = fRotAngle[i];
514 fRotAngle[j+1] = fRotAngle[i+1];
cc80f89e 515 fRotAngle[i+2] =angle;
516 fRotAngle[j+2] =angle;
1283eee5 517 }
518 angle = fOuterAngleShift;
cc80f89e 519 j=(fNInnerSector+fNOuterSector/2)*4;
520 for (i=fNInnerSector*4; j<fNSector*4; i+=4,j+=4, angle +=fOuterAngle){
1283eee5 521 fRotAngle[i]=TMath::Cos(angle);
522 fRotAngle[i+1]=TMath::Sin(angle);
523 fRotAngle[j] = fRotAngle[i];
524 fRotAngle[j+1] = fRotAngle[i+1];
cc80f89e 525 fRotAngle[i+2] =angle;
526 fRotAngle[j+2] =angle;
1283eee5 527 }
cc80f89e 528 fZWidth = fTSample*fDriftV;
73042f01 529 fTotalNormFac = fPadCoupling*fChipNorm*kQel*1.e15*fChipGain*fADCSat/fADCDynRange;
530 fNoiseNormFac = kQel*1.e15*fChipGain*fADCSat/fADCDynRange;
cc80f89e 531 //wire section
f03e3423 532 /* Int_t nwire;
cc80f89e 533 Float_t wspace; //available space for wire
534 Float_t dummyspace; //dummyspace for wire
f03e3423 535
cc80f89e 536 wspace =fInnerRadiusUp-fInnerRadiusLow-2*fInnerOffWire;
537 nwire = Int_t(wspace/fInnerWWPitch);
538 wspace = Float_t(nwire)*fInnerWWPitch;
f03e3423 539 dummyspace =(fInnerRadiusUp-fInnerRadiusLow-wspace)/2.;
cc80f89e 540 wspace =fOuterRadiusUp-fOuterRadiusLow-2*fOuterOffWire;
541 nwire = Int_t(wspace/fOuterWWPitch);
542 wspace = Float_t(nwire)*fOuterWWPitch;
543 dummyspace =(fOuterRadiusUp-fOuterRadiusLow-wspace)/2.;
544 fROuterFirstWire = fOuterRadiusLow+dummyspace;
545 fROuterLastWire = fROuterFirstWire+fOuterWWPitch*(Float_t)(nwire);
f03e3423 546 */
1283eee5 547
8c555625 548 //
cc80f89e 549 //response data
550 //
551 if (fResponseBin==0) delete [] fResponseBin;
552 if (fResponseWeight==0) delete [] fResponseBin;
553 fResponseBin = new Int_t[3*fNResponseMax];
554 fResponseWeight = new Float_t[fNResponseMax];
555
8c555625 556 fbStatus = kTRUE;
557 return kTRUE;
558}
559
560
561
562Bool_t AliTPCParam::GetStatus()
563{
564 //get information about object consistency
565 return fbStatus;
566}
567
568Int_t AliTPCParam::GetNRowLow() const
569{
570 //get the number of pad rows in low sector
cc80f89e 571 return fNRowLow;
8c555625 572}
573Int_t AliTPCParam::GetNRowUp() const
574{
575 //get the number of pad rows in up sector
cc80f89e 576 return fNRowUp;
8c555625 577}
f03e3423 578Int_t AliTPCParam::GetNRowUp1() const
579{
580 //get the number of pad rows in up1 sector
581 return fNRowUp1;
582}
583Int_t AliTPCParam::GetNRowUp2() const
584{
585 //get the number of pad rows in up2 sector
586 return fNRowUp2;
587}
8c555625 588Float_t AliTPCParam::GetPadRowRadiiLow(Int_t irow) const
589{
590 //get the pad row (irow) radii
cc80f89e 591 if ( !(irow<0) && (irow<fNRowLow) )
8c555625 592 return fPadRowLow[irow];
593 else
594 return 0;
595}
596
597Float_t AliTPCParam::GetPadRowRadiiUp(Int_t irow) const
598{
599 //get the pad row (irow) radii
cc80f89e 600 if ( !(irow<0) && (irow<fNRowUp) )
8c555625 601 return fPadRowUp[irow];
602 else
603 return 0;
604}
605
606Int_t AliTPCParam::GetNPadsLow(Int_t irow) const
607{
608 //get the number of pads in row irow
cc80f89e 609 if ( !(irow<0) && (irow<fNRowLow) )
610 return fNPadsLow[irow];
8c555625 611 else
612 return 0;
613}
614
615
616Int_t AliTPCParam::GetNPadsUp(Int_t irow) const
617{
618 //get the number of pads in row irow
cc80f89e 619 if ( !(irow<0) && (irow<fNRowUp) )
620 return fNPadsUp[irow];
8c555625 621 else
622 return 0;
623}
f03e3423 624Float_t AliTPCParam::GetYInner(Int_t irow) const
625{
626 return fYInner[irow];
627}
628
629
630Float_t AliTPCParam::GetYOuter(Int_t irow) const
631{
632 return fYOuter[irow];
633}
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