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 1.16 2002/10/14 14:57:42 hristov
19 Merging the VirtualMC branch to the main development branch (HEAD)
21 Revision 1.13.4.1 2002/06/10 15:26:11 hristov
24 Revision 1.15 2002/05/07 17:24:02 kowal2
25 Updated wires positions
27 Revision 1.14 2002/03/29 06:57:45 kowal2
28 Restored backward compatibility to use the hits from Dec. 2000 production.
30 Revision 1.13 2002/03/18 17:59:13 kowal2
31 Chnges in the pad geometry - 3 pad lengths introduced.
33 Revision 1.12 2002/02/05 09:12:26 hristov
34 Small mods for gcc 3.02
36 Revision 1.11 2000/11/02 07:33:48 kowal2
37 Automatic streamer generation.
39 Revision 1.10 2000/07/10 20:57:39 hristov
40 Update of TPC code and macros by M.Kowalski
42 Revision 1.9 2000/06/30 12:07:50 kowal2
43 Updated from the TPC-PreRelease branch
45 Revision 1.8.4.4 2000/06/26 07:39:42 kowal2
46 Changes to obey the coding rules
48 Revision 1.8.4.3 2000/06/25 08:38:41 kowal2
49 Splitted from AliTPCtracking
51 Revision 1.8.4.2 2000/06/14 16:48:24 kowal2
52 Parameter setting improved. Removed compiler warnings
54 Revision 1.8.4.1 2000/06/09 07:12:21 kowal2
58 Revision 1.8 2000/04/17 09:37:33 kowal2
59 removed obsolete AliTPCDigitsDisplay.C
61 Revision 1.7.8.2 2000/04/10 08:44:51 kowal2
63 New transformations added
64 Different pad and pad-rows geometries for different sectors
66 Revision 1.7.8.1 2000/04/10 07:56:53 kowal2
67 Not used anymore - removed
69 Revision 1.7 1999/10/08 13:10:35 fca
70 Values in SetDefault are in radiants
72 Revision 1.6 1999/10/08 06:27:59 fca
75 Revision 1.5 1999/10/05 17:18:27 fca
76 Correct GetWire check on even/odd fnWires
78 Revision 1.4 1999/09/29 09:24:34 fca
79 Introduction of the Copyright and cvs Log
83 ///////////////////////////////////////////////////////////////////////
84 // Manager and of geomety classes for set: TPC //
86 // !sectors are numbered from 0 //
87 // !pad rows are numbered from 0 //
89 // 12.6. changed z relative
90 // Origin: Marian Ivanov, Uni. of Bratislava, ivanov@fmph.uniba.sk //
92 ///////////////////////////////////////////////////////////////////////
96 #include <Riostream.h>
100 #include <AliTPCParam.h>
105 ClassImp(AliTPCParam)
108 //___________________________________________
109 AliTPCParam::AliTPCParam()
112 //constructor sets the default parameters
118 SetTitle("75x40_100x60_150x60");
122 AliTPCParam::~AliTPCParam()
125 //destructor deletes some dynamicaly alocated variables
128 if (fResponseBin!=0) delete [] fResponseBin;
129 if (fResponseWeight!=0) delete [] fResponseWeight;
130 if (fRotAngle !=0) delete [] fRotAngle;
137 Int_t AliTPCParam::Transform0to1(Float_t *xyz, Int_t * index) const
140 // calculates sector number (index[1], undefined on input)
146 Float_t r = TMath::Sqrt(xyz[0]*xyz[0]+xyz[1]*xyz[1]);
147 if ((xyz[0]==0)&&(xyz[1]==0)) angle = 0.;
150 angle =TMath::ASin(xyz[1]/r);
151 if (xyz[0]<0) angle=TMath::Pi()-angle;
152 if ( (xyz[0]>0) && (xyz[1]<0) ) angle=2*TMath::Pi()+angle;
155 sector=Int_t((angle-fInnerAngleShift)/fInnerAngle);
158 AdjustCosSin(sector,cos,sin);
159 x1=xyz[0]*cos + xyz[1]*sin;
161 if (x1>fOuterRadiusLow)
163 sector=Int_t((angle-fOuterAngleShift)/fOuterAngle)+fNInnerSector;
164 if (xyz[2]<0) sector+=(fNOuterSector>>1);
167 if (xyz[2]<0) sector+=(fNInnerSector>>1);
168 index[1]=sector; // calculated sector number
169 index[0]=1; // indicates system after transformation
173 Bool_t AliTPCParam::Transform(Float_t *xyz, Int_t *index, Int_t* oindex)
175 //transformation from input coodination system to output coordination system
185 Int_t AliTPCParam::GetPadRow(Float_t *xyz, Int_t *index) const
188 //calculates pad row of point xyz - transformation to system 8 (digit system)
190 Int_t system = index[0];
192 Transform0to1(xyz,index);
196 Transform1to2(xyz,index);
200 if (fGeometryType==0){ //straight row
202 Transform2to3(xyz,index);
206 Transform3to4(xyz,index);
210 Transform4to8(xyz,index);
219 if (fGeometryType==1){ //cylindrical geometry
221 Transform2to5(xyz,index);
225 Transform2to3(xyz,index);
229 Transform3to4(xyz,index);
238 return -1; //if no reasonable system
241 void AliTPCParam::SetSectorAngles(Float_t innerangle, Float_t innershift, Float_t outerangle,
245 // set opening angles
246 const static Float_t kDegtoRad = 0.01745329251994;
247 fInnerAngle = innerangle; //opening angle of Inner sector
248 fInnerAngleShift = innershift; //shift of first inner sector center to the 0
249 fOuterAngle = outerangle; //opening angle of outer sector
250 fOuterAngleShift = outershift; //shift of first sector center to the 0
251 fInnerAngle *=kDegtoRad;
252 fInnerAngleShift *=kDegtoRad;
253 fOuterAngle *=kDegtoRad;
254 fOuterAngleShift *=kDegtoRad;
257 Float_t AliTPCParam::GetInnerAngle() const
264 Float_t AliTPCParam::GetInnerAngleShift() const
267 return fInnerAngleShift;
269 Float_t AliTPCParam::GetOuterAngle() const
274 Float_t AliTPCParam::GetOuterAngleShift() const
278 return fOuterAngleShift;
282 Int_t AliTPCParam::GetIndex(Int_t sector, Int_t row)
285 //give index of the given sector and pad row
286 //no control if the sectors and rows are reasonable !!!
288 if (sector<fNInnerSector) return sector*fNRowLow+row;
289 return (fNInnerSector*fNRowLow)+(sector-fNInnerSector)*fNRowUp+row;
292 Bool_t AliTPCParam::AdjustSectorRow(Int_t index, Int_t & sector, Int_t &row) const
295 //return sector and padrow for given index
296 //if index is reasonable returns true else return false
298 if ( (index<0) || (index>fNtRows)) return kFALSE;
299 Int_t outindex = fNInnerSector*fNRowLow;
300 if (index<outindex) {
301 sector = index/fNRowLow;
302 row = index - sector*fNRowLow;
306 sector = index/fNRowUp;
307 row = index - sector*fNRowUp;
308 sector += fNInnerSector;
312 void AliTPCParam::SetDefault()
315 //set default parameters
317 //const static Int_t kMaxRows=600;
319 //sector default parameters
321 const static Float_t kInnerRadiusLow = 82.97;
322 const static Float_t kInnerRadiusUp = 133.17;
323 const static Float_t kOuterRadiusLow = 133.58;
324 const static Float_t kOuterRadiusUp = 247.78;
325 const static Float_t kInnerAngle = 20; // 20 degrees
326 const static Float_t kInnerAngleShift = 10;
327 const static Float_t kOuterAngle = 20; // 20 degrees
328 const static Float_t kOuterAngleShift = 10;
329 const static Float_t kInnerFrameSpace = 1.5;
330 const static Float_t kOuterFrameSpace = 1.5;
331 const static Float_t kInnerWireMount = 1.370825926;
332 const static Float_t kOuterWireMount = 1.370825926;
333 const static Float_t kZLength =250.;
334 const static Int_t kGeometryType = 0; //straight rows
335 const static Int_t kNRowLow = 63;
336 const static Int_t kNRowUp1 = 64;
337 const static Int_t kNRowUp2 = 32;
338 const static Int_t kNRowUp = 96;
340 //wires default parameters
342 const static Int_t kNInnerWiresPerPad = 3;
343 const static Int_t kInnerDummyWire = 2;
344 const static Float_t kInnerWWPitch = 0.25;
345 const static Float_t kRInnerFirstWire = 84.445;
346 const static Float_t kRInnerLastWire = 132.445;
347 const static Float_t kInnerOffWire = 0.5;
348 const static Int_t kNOuter1WiresPerPad = 4;
349 const static Int_t kNOuter2WiresPerPad = 6;
350 const static Float_t kOuterWWPitch = 0.25;
351 const static Float_t kROuterFirstWire = 134.305;
352 const static Float_t kROuterLastWire = 247.055;
353 const static Int_t kOuterDummyWire = 2;
354 const static Float_t kOuterOffWire = 0.5;
356 //pad default parameters
358 const static Float_t kInnerPadPitchLength = 0.75;
359 const static Float_t kInnerPadPitchWidth = 0.40;
360 const static Float_t kInnerPadLength = 0.75;
361 const static Float_t kInnerPadWidth = 0.40;
362 const static Float_t kOuter1PadPitchLength = 1.0;
363 const static Float_t kOuterPadPitchWidth = 0.6;
364 const static Float_t kOuter1PadLength = 1.0;
365 const static Float_t kOuterPadWidth = 0.6;
366 const static Float_t kOuter2PadPitchLength = 1.5;
367 const static Float_t kOuter2PadLength = 1.5;
369 const static Bool_t kBMWPCReadout = kTRUE; //MWPC readout - another possibility GEM
370 const static Int_t kNCrossRows = 1; //number of rows to cross-talk
373 //gas default parameters
375 const static Float_t kDiffT = 2.2e-2;
376 const static Float_t kDiffL = 2.2e-2;
377 const static Float_t kGasGain = 2.e4;
378 const static Float_t kDriftV =2.83e6;
379 const static Float_t kOmegaTau = 0.145;
380 const static Float_t kAttCoef = 250.;
381 const static Float_t kOxyCont = 5.e-6;
383 //electronic default parameters
385 const static Float_t kPadCoupling=0.5;
386 const static Int_t kZeroSup=2;
387 const static Float_t kNoise = 1000;
388 const static Float_t kChipGain = 12;
389 const static Float_t kChipNorm = 0.4;
390 const static Float_t kTSample = 2.e-7;
391 const static Float_t kTFWHM = 1.9e-7; //fwhm of charge distribution
392 const static Int_t kMaxTBin =445;
393 const static Int_t kADCSat =1024;
394 const static Float_t kADCDynRange =2000.;
398 const static Float_t kBField =0.2;
399 const static Float_t kNPrimLoss =10.9;
400 const static Float_t kNTotalLoss =39.9;
404 const static Int_t kNResponseMax=100;
405 const static Float_t kResponseThreshold=0.01;
408 //set sector parameters
410 SetInnerRadiusLow(kInnerRadiusLow);
411 SetOuterRadiusLow(kOuterRadiusLow);
412 SetInnerRadiusUp(kInnerRadiusUp);
413 SetOuterRadiusUp(kOuterRadiusUp);
414 SetInnerFrameSpace(kInnerFrameSpace);
415 SetOuterFrameSpace(kOuterFrameSpace);
416 SetInnerWireMount(kInnerWireMount);
417 SetOuterWireMount(kOuterWireMount);
418 SetSectorAngles(kInnerAngle,kInnerAngleShift,kOuterAngle,kOuterAngleShift);
419 SetZLength(kZLength);
420 SetGeometryType(kGeometryType);
421 SetRowNLow(kNRowLow);
422 SetRowNUp1 (kNRowUp1);
423 SetRowNUp2(kNRowUp2);
426 //set wire parameters
428 SetInnerNWires(kNInnerWiresPerPad);
429 SetInnerDummyWire(kInnerDummyWire);
430 SetInnerOffWire(kInnerOffWire);
431 SetOuter1NWires(kNOuter1WiresPerPad);
432 SetOuter2NWire(kNOuter2WiresPerPad);
433 SetOuterDummyWire(kOuterDummyWire);
434 SetOuterOffWire(kOuterOffWire);
435 SetInnerWWPitch(kInnerWWPitch);
436 SetRInnerFirstWire(kRInnerFirstWire);
437 SetRInnerLastWire(kRInnerLastWire);
438 SetOuterWWPitch(kOuterWWPitch);
439 SetROuterFirstWire(kROuterFirstWire);
440 SetROuterLastWire(kROuterLastWire);
444 SetInnerPadPitchLength(kInnerPadPitchLength);
445 SetInnerPadPitchWidth(kInnerPadPitchWidth);
446 SetInnerPadLength(kInnerPadLength);
447 SetInnerPadWidth(kInnerPadWidth);
448 SetOuter1PadPitchLength(kOuter1PadPitchLength);
449 SetOuter2PadPitchLength(kOuter2PadPitchLength);
450 SetOuterPadPitchWidth(kOuterPadPitchWidth);
451 SetOuter1PadLength(kOuter1PadLength);
452 SetOuter2PadLength(kOuter2PadLength);
453 SetOuterPadWidth(kOuterPadWidth);
454 SetMWPCReadout(kBMWPCReadout);
455 SetNCrossRows(kNCrossRows);
461 SetGasGain(kGasGain);
463 SetOmegaTau(kOmegaTau);
464 SetAttCoef(kAttCoef);
465 SetOxyCont(kOxyCont);
467 //set electronivc parameters
469 SetPadCoupling(kPadCoupling);
470 SetZeroSup(kZeroSup);
472 SetChipGain(kChipGain);
473 SetChipNorm(kChipNorm);
474 SetTSample(kTSample);
476 SetMaxTBin(kMaxTBin);
478 SetADCDynRange(kADCDynRange);
481 SetNPrimLoss(kNPrimLoss);
482 SetNTotalLoss(kNTotalLoss);
484 //set response parameters
486 SetNResponseMax(kNResponseMax);
487 SetResponseThreshold(static_cast<int>(kResponseThreshold));
491 Bool_t AliTPCParam::Update()
494 // update some calculated parameter which must be updated after changing "base"
496 // for example we can change size of pads and according this recalculate number
497 // of pad rows, number of of pads in given row ....
499 const Float_t kQel = 1.602e-19; // elementary charge
502 Int_t i,j; //loop variables because HP
503 //-----------------Sector section------------------------------------------
504 //calclulate number of sectors
505 fNInnerSector = Int_t(4*TMath::Pi()/fInnerAngle+0.2);
506 // number of inner sectors - factor 0.2 to don't be influnced by inprecision
507 if (fNInnerSector%2) return kFALSE;
508 fNOuterSector = Int_t(4*TMath::Pi()/fOuterAngle+0.2);
509 if (fNOuterSector%2) return kFALSE;
510 fNSector = fNInnerSector+fNOuterSector;
512 if (fRotAngle!=0) delete [] fRotAngle;
513 fRotAngle = new Float_t[4*fNSector];
514 //calculate sin and cosine of rotations angle
515 //sectors angles numbering from 0
518 Float_t angle = fInnerAngleShift;
519 for (i=0; j<fNInnerSector*4; i+=4, j+=4 , angle +=fInnerAngle){
520 fRotAngle[i]=TMath::Cos(angle);
521 fRotAngle[i+1]=TMath::Sin(angle);
522 fRotAngle[j] = fRotAngle[i];
523 fRotAngle[j+1] = fRotAngle[i+1];
524 fRotAngle[i+2] =angle;
525 fRotAngle[j+2] =angle;
527 angle = fOuterAngleShift;
528 j=(fNInnerSector+fNOuterSector/2)*4;
529 for (i=fNInnerSector*4; j<fNSector*4; i+=4,j+=4, angle +=fOuterAngle){
530 fRotAngle[i]=TMath::Cos(angle);
531 fRotAngle[i+1]=TMath::Sin(angle);
532 fRotAngle[j] = fRotAngle[i];
533 fRotAngle[j+1] = fRotAngle[i+1];
534 fRotAngle[i+2] =angle;
535 fRotAngle[j+2] =angle;
537 fZWidth = fTSample*fDriftV;
538 fTotalNormFac = fPadCoupling*fChipNorm*kQel*1.e15*fChipGain*fADCSat/fADCDynRange;
539 fNoiseNormFac = kQel*1.e15*fChipGain*fADCSat/fADCDynRange;
542 Float_t wspace; //available space for wire
543 Float_t dummyspace; //dummyspace for wire
545 wspace =fInnerRadiusUp-fInnerRadiusLow-2*fInnerOffWire;
546 nwire = Int_t(wspace/fInnerWWPitch);
547 wspace = Float_t(nwire)*fInnerWWPitch;
548 dummyspace =(fInnerRadiusUp-fInnerRadiusLow-wspace)/2.;
549 wspace =fOuterRadiusUp-fOuterRadiusLow-2*fOuterOffWire;
550 nwire = Int_t(wspace/fOuterWWPitch);
551 wspace = Float_t(nwire)*fOuterWWPitch;
552 dummyspace =(fOuterRadiusUp-fOuterRadiusLow-wspace)/2.;
553 fROuterFirstWire = fOuterRadiusLow+dummyspace;
554 fROuterLastWire = fROuterFirstWire+fOuterWWPitch*(Float_t)(nwire);
560 if (fResponseBin==0) delete [] fResponseBin;
561 if (fResponseWeight==0) delete [] fResponseBin;
562 fResponseBin = new Int_t[3*fNResponseMax];
563 fResponseWeight = new Float_t[fNResponseMax];
571 Bool_t AliTPCParam::GetStatus()
573 //get information about object consistency
577 Int_t AliTPCParam::GetNRowLow() const
579 //get the number of pad rows in low sector
582 Int_t AliTPCParam::GetNRowUp() const
584 //get the number of pad rows in up sector
587 Int_t AliTPCParam::GetNRowUp1() const
589 //get the number of pad rows in up1 sector
592 Int_t AliTPCParam::GetNRowUp2() const
594 //get the number of pad rows in up2 sector
597 Float_t AliTPCParam::GetPadRowRadiiLow(Int_t irow) const
599 //get the pad row (irow) radii
600 if ( !(irow<0) && (irow<fNRowLow) )
601 return fPadRowLow[irow];
606 Float_t AliTPCParam::GetPadRowRadiiUp(Int_t irow) const
608 //get the pad row (irow) radii
609 if ( !(irow<0) && (irow<fNRowUp) )
610 return fPadRowUp[irow];
615 Int_t AliTPCParam::GetNPadsLow(Int_t irow) const
617 //get the number of pads in row irow
618 if ( !(irow<0) && (irow<fNRowLow) )
619 return fNPadsLow[irow];
625 Int_t AliTPCParam::GetNPadsUp(Int_t irow) const
627 //get the number of pads in row irow
628 if ( !(irow<0) && (irow<fNRowUp) )
629 return fNPadsUp[irow];
633 Float_t AliTPCParam::GetYInner(Int_t irow) const
635 return fYInner[irow];
639 Float_t AliTPCParam::GetYOuter(Int_t irow) const
641 return fYOuter[irow];