1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 Revision 1.13.4.1 2002/06/10 15:26:11 hristov
21 Revision 1.15 2002/05/07 17:24:02 kowal2
22 Updated wires positions
24 Revision 1.14 2002/03/29 06:57:45 kowal2
25 Restored backward compatibility to use the hits from Dec. 2000 production.
27 Revision 1.13 2002/03/18 17:59:13 kowal2
28 Chnges in the pad geometry - 3 pad lengths introduced.
30 Revision 1.12 2002/02/05 09:12:26 hristov
31 Small mods for gcc 3.02
33 Revision 1.11 2000/11/02 07:33:48 kowal2
34 Automatic streamer generation.
36 Revision 1.10 2000/07/10 20:57:39 hristov
37 Update of TPC code and macros by M.Kowalski
39 Revision 1.9 2000/06/30 12:07:50 kowal2
40 Updated from the TPC-PreRelease branch
42 Revision 1.8.4.4 2000/06/26 07:39:42 kowal2
43 Changes to obey the coding rules
45 Revision 1.8.4.3 2000/06/25 08:38:41 kowal2
46 Splitted from AliTPCtracking
48 Revision 1.8.4.2 2000/06/14 16:48:24 kowal2
49 Parameter setting improved. Removed compiler warnings
51 Revision 1.8.4.1 2000/06/09 07:12:21 kowal2
55 Revision 1.8 2000/04/17 09:37:33 kowal2
56 removed obsolete AliTPCDigitsDisplay.C
58 Revision 1.7.8.2 2000/04/10 08:44:51 kowal2
60 New transformations added
61 Different pad and pad-rows geometries for different sectors
63 Revision 1.7.8.1 2000/04/10 07:56:53 kowal2
64 Not used anymore - removed
66 Revision 1.7 1999/10/08 13:10:35 fca
67 Values in SetDefault are in radiants
69 Revision 1.6 1999/10/08 06:27:59 fca
72 Revision 1.5 1999/10/05 17:18:27 fca
73 Correct GetWire check on even/odd fnWires
75 Revision 1.4 1999/09/29 09:24:34 fca
76 Introduction of the Copyright and cvs Log
80 ///////////////////////////////////////////////////////////////////////
81 // Manager and of geomety classes for set: TPC //
83 // !sectors are numbered from 0 //
84 // !pad rows are numbered from 0 //
86 // 12.6. changed z relative
87 // Origin: Marian Ivanov, Uni. of Bratislava, ivanov@fmph.uniba.sk //
89 ///////////////////////////////////////////////////////////////////////
97 #include <AliTPCParam.h>
102 ClassImp(AliTPCParam)
105 //___________________________________________
106 AliTPCParam::AliTPCParam()
109 //constructor sets the default parameters
115 SetTitle("75x40_100x60_150x60");
119 AliTPCParam::~AliTPCParam()
122 //destructor deletes some dynamicaly alocated variables
125 if (fResponseBin!=0) delete [] fResponseBin;
126 if (fResponseWeight!=0) delete [] fResponseWeight;
127 if (fRotAngle !=0) delete [] fRotAngle;
134 Int_t AliTPCParam::Transform0to1(Float_t *xyz, Int_t * index) const
137 // calculates sector number (index[1], undefined on input)
143 Float_t r = TMath::Sqrt(xyz[0]*xyz[0]+xyz[1]*xyz[1]);
144 if ((xyz[0]==0)&&(xyz[1]==0)) angle = 0.;
147 angle =TMath::ASin(xyz[1]/r);
148 if (xyz[0]<0) angle=TMath::Pi()-angle;
149 if ( (xyz[0]>0) && (xyz[1]<0) ) angle=2*TMath::Pi()+angle;
152 sector=Int_t((angle-fInnerAngleShift)/fInnerAngle);
155 AdjustCosSin(sector,cos,sin);
156 x1=xyz[0]*cos + xyz[1]*sin;
158 if (x1>fOuterRadiusLow)
160 sector=Int_t((angle-fOuterAngleShift)/fOuterAngle)+fNInnerSector;
161 if (xyz[2]<0) sector+=(fNOuterSector>>1);
164 if (xyz[2]<0) sector+=(fNInnerSector>>1);
165 index[1]=sector; // calculated sector number
166 index[0]=1; // indicates system after transformation
170 Bool_t AliTPCParam::Transform(Float_t *xyz, Int_t *index, Int_t* oindex)
172 //transformation from input coodination system to output coordination system
182 Int_t AliTPCParam::GetPadRow(Float_t *xyz, Int_t *index) const
185 //calculates pad row of point xyz - transformation to system 8 (digit system)
187 Int_t system = index[0];
189 Transform0to1(xyz,index);
193 Transform1to2(xyz,index);
197 if (fGeometryType==0){ //straight row
199 Transform2to3(xyz,index);
203 Transform3to4(xyz,index);
207 Transform4to8(xyz,index);
216 if (fGeometryType==1){ //cylindrical geometry
218 Transform2to5(xyz,index);
222 Transform2to3(xyz,index);
226 Transform3to4(xyz,index);
235 return -1; //if no reasonable system
238 void AliTPCParam::SetSectorAngles(Float_t innerangle, Float_t innershift, Float_t outerangle,
242 // set opening angles
243 const static Float_t kDegtoRad = 0.01745329251994;
244 fInnerAngle = innerangle; //opening angle of Inner sector
245 fInnerAngleShift = innershift; //shift of first inner sector center to the 0
246 fOuterAngle = outerangle; //opening angle of outer sector
247 fOuterAngleShift = outershift; //shift of first sector center to the 0
248 fInnerAngle *=kDegtoRad;
249 fInnerAngleShift *=kDegtoRad;
250 fOuterAngle *=kDegtoRad;
251 fOuterAngleShift *=kDegtoRad;
254 Float_t AliTPCParam::GetInnerAngle() const
261 Float_t AliTPCParam::GetInnerAngleShift() const
264 return fInnerAngleShift;
266 Float_t AliTPCParam::GetOuterAngle() const
271 Float_t AliTPCParam::GetOuterAngleShift() const
275 return fOuterAngleShift;
279 Int_t AliTPCParam::GetIndex(Int_t sector, Int_t row)
282 //give index of the given sector and pad row
283 //no control if the sectors and rows are reasonable !!!
285 if (sector<fNInnerSector) return sector*fNRowLow+row;
286 return (fNInnerSector*fNRowLow)+(sector-fNInnerSector)*fNRowUp+row;
289 Bool_t AliTPCParam::AdjustSectorRow(Int_t index, Int_t & sector, Int_t &row) const
292 //return sector and padrow for given index
293 //if index is reasonable returns true else return false
295 if ( (index<0) || (index>fNtRows)) return kFALSE;
296 Int_t outindex = fNInnerSector*fNRowLow;
297 if (index<outindex) {
298 sector = index/fNRowLow;
299 row = index - sector*fNRowLow;
303 sector = index/fNRowUp;
304 row = index - sector*fNRowUp;
305 sector += fNInnerSector;
309 void AliTPCParam::SetDefault()
312 //set default parameters
314 //const static Int_t kMaxRows=600;
316 //sector default parameters
318 const static Float_t kInnerRadiusLow = 82.97;
319 const static Float_t kInnerRadiusUp = 133.17;
320 const static Float_t kOuterRadiusLow = 133.58;
321 const static Float_t kOuterRadiusUp = 247.78;
322 const static Float_t kInnerAngle = 20; // 20 degrees
323 const static Float_t kInnerAngleShift = 10;
324 const static Float_t kOuterAngle = 20; // 20 degrees
325 const static Float_t kOuterAngleShift = 10;
326 const static Float_t kInnerFrameSpace = 1.5;
327 const static Float_t kOuterFrameSpace = 1.5;
328 const static Float_t kInnerWireMount = 1.370825926;
329 const static Float_t kOuterWireMount = 1.370825926;
330 const static Float_t kZLength =250.;
331 const static Int_t kGeometryType = 0; //straight rows
332 const static Int_t kNRowLow = 63;
333 const static Int_t kNRowUp1 = 64;
334 const static Int_t kNRowUp2 = 32;
335 const static Int_t kNRowUp = 96;
337 //wires default parameters
339 const static Int_t kNInnerWiresPerPad = 3;
340 const static Int_t kInnerDummyWire = 2;
341 const static Float_t kInnerWWPitch = 0.25;
342 const static Float_t kRInnerFirstWire = 84.445;
343 const static Float_t kRInnerLastWire = 132.445;
344 const static Float_t kInnerOffWire = 0.5;
345 const static Int_t kNOuter1WiresPerPad = 4;
346 const static Int_t kNOuter2WiresPerPad = 6;
347 const static Float_t kOuterWWPitch = 0.25;
348 const static Float_t kROuterFirstWire = 134.305;
349 const static Float_t kROuterLastWire = 247.055;
350 const static Int_t kOuterDummyWire = 2;
351 const static Float_t kOuterOffWire = 0.5;
353 //pad default parameters
355 const static Float_t kInnerPadPitchLength = 0.75;
356 const static Float_t kInnerPadPitchWidth = 0.40;
357 const static Float_t kInnerPadLength = 0.75;
358 const static Float_t kInnerPadWidth = 0.40;
359 const static Float_t kOuter1PadPitchLength = 1.0;
360 const static Float_t kOuterPadPitchWidth = 0.6;
361 const static Float_t kOuter1PadLength = 1.0;
362 const static Float_t kOuterPadWidth = 0.6;
363 const static Float_t kOuter2PadPitchLength = 1.5;
364 const static Float_t kOuter2PadLength = 1.5;
366 const static Bool_t kBMWPCReadout = kTRUE; //MWPC readout - another possibility GEM
367 const static Int_t kNCrossRows = 1; //number of rows to cross-talk
370 //gas default parameters
372 const static Float_t kDiffT = 2.2e-2;
373 const static Float_t kDiffL = 2.2e-2;
374 const static Float_t kGasGain = 2.e4;
375 const static Float_t kDriftV =2.83e6;
376 const static Float_t kOmegaTau = 0.145;
377 const static Float_t kAttCoef = 250.;
378 const static Float_t kOxyCont = 5.e-6;
380 //electronic default parameters
382 const static Float_t kPadCoupling=0.5;
383 const static Int_t kZeroSup=2;
384 const static Float_t kNoise = 1000;
385 const static Float_t kChipGain = 12;
386 const static Float_t kChipNorm = 0.4;
387 const static Float_t kTSample = 2.e-7;
388 const static Float_t kTFWHM = 1.9e-7; //fwhm of charge distribution
389 const static Int_t kMaxTBin =445;
390 const static Int_t kADCSat =1024;
391 const static Float_t kADCDynRange =2000.;
395 const static Float_t kBField =0.2;
396 const static Float_t kNPrimLoss =10.9;
397 const static Float_t kNTotalLoss =39.9;
401 const static Int_t kNResponseMax=100;
402 const static Float_t kResponseThreshold=0.01;
405 //set sector parameters
407 SetInnerRadiusLow(kInnerRadiusLow);
408 SetOuterRadiusLow(kOuterRadiusLow);
409 SetInnerRadiusUp(kInnerRadiusUp);
410 SetOuterRadiusUp(kOuterRadiusUp);
411 SetInnerFrameSpace(kInnerFrameSpace);
412 SetOuterFrameSpace(kOuterFrameSpace);
413 SetInnerWireMount(kInnerWireMount);
414 SetOuterWireMount(kOuterWireMount);
415 SetSectorAngles(kInnerAngle,kInnerAngleShift,kOuterAngle,kOuterAngleShift);
416 SetZLength(kZLength);
417 SetGeometryType(kGeometryType);
418 SetRowNLow(kNRowLow);
419 SetRowNUp1 (kNRowUp1);
420 SetRowNUp2(kNRowUp2);
423 //set wire parameters
425 SetInnerNWires(kNInnerWiresPerPad);
426 SetInnerDummyWire(kInnerDummyWire);
427 SetInnerOffWire(kInnerOffWire);
428 SetOuter1NWires(kNOuter1WiresPerPad);
429 SetOuter2NWire(kNOuter2WiresPerPad);
430 SetOuterDummyWire(kOuterDummyWire);
431 SetOuterOffWire(kOuterOffWire);
432 SetInnerWWPitch(kInnerWWPitch);
433 SetRInnerFirstWire(kRInnerFirstWire);
434 SetRInnerLastWire(kRInnerLastWire);
435 SetOuterWWPitch(kOuterWWPitch);
436 SetROuterFirstWire(kROuterFirstWire);
437 SetROuterLastWire(kROuterLastWire);
441 SetInnerPadPitchLength(kInnerPadPitchLength);
442 SetInnerPadPitchWidth(kInnerPadPitchWidth);
443 SetInnerPadLength(kInnerPadLength);
444 SetInnerPadWidth(kInnerPadWidth);
445 SetOuter1PadPitchLength(kOuter1PadPitchLength);
446 SetOuter2PadPitchLength(kOuter2PadPitchLength);
447 SetOuterPadPitchWidth(kOuterPadPitchWidth);
448 SetOuter1PadLength(kOuter1PadLength);
449 SetOuter2PadLength(kOuter2PadLength);
450 SetOuterPadWidth(kOuterPadWidth);
451 SetMWPCReadout(kBMWPCReadout);
452 SetNCrossRows(kNCrossRows);
458 SetGasGain(kGasGain);
460 SetOmegaTau(kOmegaTau);
461 SetAttCoef(kAttCoef);
462 SetOxyCont(kOxyCont);
464 //set electronivc parameters
466 SetPadCoupling(kPadCoupling);
467 SetZeroSup(kZeroSup);
469 SetChipGain(kChipGain);
470 SetChipNorm(kChipNorm);
471 SetTSample(kTSample);
473 SetMaxTBin(kMaxTBin);
475 SetADCDynRange(kADCDynRange);
478 SetNPrimLoss(kNPrimLoss);
479 SetNTotalLoss(kNTotalLoss);
481 //set response parameters
483 SetNResponseMax(kNResponseMax);
484 SetResponseThreshold(static_cast<int>(kResponseThreshold));
488 Bool_t AliTPCParam::Update()
491 // update some calculated parameter which must be updated after changing "base"
493 // for example we can change size of pads and according this recalculate number
494 // of pad rows, number of of pads in given row ....
496 const Float_t kQel = 1.602e-19; // elementary charge
499 Int_t i,j; //loop variables because HP
500 //-----------------Sector section------------------------------------------
501 //calclulate number of sectors
502 fNInnerSector = Int_t(4*TMath::Pi()/fInnerAngle+0.2);
503 // number of inner sectors - factor 0.2 to don't be influnced by inprecision
504 if (fNInnerSector%2) return kFALSE;
505 fNOuterSector = Int_t(4*TMath::Pi()/fOuterAngle+0.2);
506 if (fNOuterSector%2) return kFALSE;
507 fNSector = fNInnerSector+fNOuterSector;
509 if (fRotAngle!=0) delete [] fRotAngle;
510 fRotAngle = new Float_t[4*fNSector];
511 //calculate sin and cosine of rotations angle
512 //sectors angles numbering from 0
515 Float_t angle = fInnerAngleShift;
516 for (i=0; j<fNInnerSector*4; i+=4, j+=4 , angle +=fInnerAngle){
517 fRotAngle[i]=TMath::Cos(angle);
518 fRotAngle[i+1]=TMath::Sin(angle);
519 fRotAngle[j] = fRotAngle[i];
520 fRotAngle[j+1] = fRotAngle[i+1];
521 fRotAngle[i+2] =angle;
522 fRotAngle[j+2] =angle;
524 angle = fOuterAngleShift;
525 j=(fNInnerSector+fNOuterSector/2)*4;
526 for (i=fNInnerSector*4; j<fNSector*4; i+=4,j+=4, angle +=fOuterAngle){
527 fRotAngle[i]=TMath::Cos(angle);
528 fRotAngle[i+1]=TMath::Sin(angle);
529 fRotAngle[j] = fRotAngle[i];
530 fRotAngle[j+1] = fRotAngle[i+1];
531 fRotAngle[i+2] =angle;
532 fRotAngle[j+2] =angle;
534 fZWidth = fTSample*fDriftV;
535 fTotalNormFac = fPadCoupling*fChipNorm*kQel*1.e15*fChipGain*fADCSat/fADCDynRange;
536 fNoiseNormFac = kQel*1.e15*fChipGain*fADCSat/fADCDynRange;
539 Float_t wspace; //available space for wire
540 Float_t dummyspace; //dummyspace for wire
542 wspace =fInnerRadiusUp-fInnerRadiusLow-2*fInnerOffWire;
543 nwire = Int_t(wspace/fInnerWWPitch);
544 wspace = Float_t(nwire)*fInnerWWPitch;
545 dummyspace =(fInnerRadiusUp-fInnerRadiusLow-wspace)/2.;
546 wspace =fOuterRadiusUp-fOuterRadiusLow-2*fOuterOffWire;
547 nwire = Int_t(wspace/fOuterWWPitch);
548 wspace = Float_t(nwire)*fOuterWWPitch;
549 dummyspace =(fOuterRadiusUp-fOuterRadiusLow-wspace)/2.;
550 fROuterFirstWire = fOuterRadiusLow+dummyspace;
551 fROuterLastWire = fROuterFirstWire+fOuterWWPitch*(Float_t)(nwire);
557 if (fResponseBin==0) delete [] fResponseBin;
558 if (fResponseWeight==0) delete [] fResponseBin;
559 fResponseBin = new Int_t[3*fNResponseMax];
560 fResponseWeight = new Float_t[fNResponseMax];
568 Bool_t AliTPCParam::GetStatus()
570 //get information about object consistency
574 Int_t AliTPCParam::GetNRowLow() const
576 //get the number of pad rows in low sector
579 Int_t AliTPCParam::GetNRowUp() const
581 //get the number of pad rows in up sector
584 Int_t AliTPCParam::GetNRowUp1() const
586 //get the number of pad rows in up1 sector
589 Int_t AliTPCParam::GetNRowUp2() const
591 //get the number of pad rows in up2 sector
594 Float_t AliTPCParam::GetPadRowRadiiLow(Int_t irow) const
596 //get the pad row (irow) radii
597 if ( !(irow<0) && (irow<fNRowLow) )
598 return fPadRowLow[irow];
603 Float_t AliTPCParam::GetPadRowRadiiUp(Int_t irow) const
605 //get the pad row (irow) radii
606 if ( !(irow<0) && (irow<fNRowUp) )
607 return fPadRowUp[irow];
612 Int_t AliTPCParam::GetNPadsLow(Int_t irow) const
614 //get the number of pads in row irow
615 if ( !(irow<0) && (irow<fNRowLow) )
616 return fNPadsLow[irow];
622 Int_t AliTPCParam::GetNPadsUp(Int_t irow) const
624 //get the number of pads in row irow
625 if ( !(irow<0) && (irow<fNRowUp) )
626 return fNPadsUp[irow];
630 Float_t AliTPCParam::GetYInner(Int_t irow) const
632 return fYInner[irow];
636 Float_t AliTPCParam::GetYOuter(Int_t irow) const
638 return fYOuter[irow];