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 ///////////////////////////////////////////////////////////////////////
19 // Manager and of geomety classes for set: TPC //
21 // !sectors are numbered from 0 //
22 // !pad rows are numbered from 0 //
24 // 27.7. - AliTPCPaaramSr object for TPC
25 // TPC with straight pad rows
26 // Origin: Marian Ivanov, Uni. of Bratislava, ivanov@fmph.uniba.sk //
28 ///////////////////////////////////////////////////////////////////////
30 //#include <Riostream.h>
33 #include "AliTPCPRF2D.h"
34 #include "AliTPCParamSR.h"
35 #include "AliTPCRF1D.h"
37 #include "AliTPCROC.h"
38 #include "TGeoManager.h"
40 ClassImp(AliTPCParamSR)
41 static const Int_t kMaxRows=600;
42 static const Float_t kEdgeSectorSpace = 2.5;
43 static const Float_t kFacSigmaPadRow=3.;
44 static const Float_t kFacSigmaPad=3.;
45 static const Float_t kFacSigmaTime=3.;
48 AliTPCParamSR::AliTPCParamSR()
59 //constructor set the default parameters
62 fFacSigmaPadRow = Float_t(kFacSigmaPadRow);
63 fFacSigmaPad = Float_t(kFacSigmaPad);
64 fFacSigmaTime = Float_t(kFacSigmaTime);
68 AliTPCParamSR::AliTPCParamSR(const AliTPCParamSR ¶m)
79 // copy constructor - dummy
81 fFacSigmaPadRow = param.fFacSigmaPadRow;
83 AliTPCParamSR & AliTPCParamSR::operator =(const AliTPCParamSR & param)
86 // assignment operator - dummy
88 if (this == ¶m) return (*this);
90 fZLength=param.fZLength;
94 AliTPCParamSR::~AliTPCParamSR()
97 //destructor destroy some dynmicaly alocated variables
98 if (fInnerPRF != 0) delete fInnerPRF;
99 if (fOuter1PRF != 0) delete fOuter1PRF;
100 if (fOuter2PRF != 0) delete fOuter2PRF;
101 if (fTimeRF != 0) delete fTimeRF;
104 void AliTPCParamSR::SetDefault()
106 //set default TPC param
108 AliTPCParam::SetDefault();
111 Int_t AliTPCParamSR::CalcResponse(Float_t* xyz, Int_t * index, Int_t row)
114 //calculate bin response as function of the input position -x
115 //return number of valid response bin
117 //we suppose that coordinate is expressed in float digits
118 // it's mean coordinate system 8
119 //xyz[0] - float padrow xyz[1] is float pad (center pad is number 0) and xyz[2] is float time bin
120 //xyz[3] - electron time in float time bin format
121 if ( (fInnerPRF==0)||(fOuter1PRF==0)||(fOuter2PRF==0) ||(fTimeRF==0) ){
122 Error("AliTPCParamSR", "response function was not adjusted");
126 Float_t sfpadrow; // sigma of response function
127 Float_t sfpad; // sigma of
128 Float_t sftime= fFacSigmaTime*fTimeRF->GetSigma()/fZWidth; //3 sigma of time response
129 if (index[1]<fNInnerSector){
130 sfpadrow =fFacSigmaPadRow*fInnerPRF->GetSigmaY()/fInnerPadPitchLength;
131 sfpad =fFacSigmaPad*fInnerPRF->GetSigmaX()/fInnerPadPitchWidth;
135 sfpadrow =fFacSigmaPadRow*fOuter1PRF->GetSigmaY()/fOuter1PadPitchLength;
136 sfpad =fFacSigmaPad*fOuter1PRF->GetSigmaX()/fOuterPadPitchWidth;}
138 sfpadrow =fFacSigmaPadRow*fOuter2PRF->GetSigmaY()/fOuter2PadPitchLength;
139 sfpad =fFacSigmaPad*fOuter2PRF->GetSigmaX()/fOuterPadPitchWidth;
143 Int_t fpadrow = TMath::Max(TMath::Nint(index[2]+xyz[0]-sfpadrow),0); //"first" padrow
144 Int_t fpad = TMath::Nint(xyz[1]-sfpad); //first pad
145 Int_t ftime = TMath::Max(TMath::Nint(xyz[2]+xyz[3]+GetZOffset()/GetZWidth()-sftime),0); // first time
146 Int_t lpadrow = TMath::Min(TMath::Nint(index[2]+xyz[0]+sfpadrow),fpadrow+19); //"last" padrow
147 lpadrow = TMath::Min(GetNRow(index[1])-1,lpadrow);
148 Int_t lpad = TMath::Min(TMath::Nint(xyz[1]+sfpad),fpad+19); //last pad
149 Int_t ltime = TMath::Min(TMath::Nint(xyz[2]+xyz[3]+GetZOffset()/GetZWidth()+sftime),ftime+19); // last time
150 ltime = TMath::Min(ltime,GetMaxTBin()-1);
152 Int_t npads = GetNPads(index[1],row);
157 if (ftime<0) ftime=0;
159 if (row>=0) { //if we are interesting about given pad row
160 if (fpadrow<=row) fpadrow =row;
163 if (lpadrow>=row) lpadrow = row;
169 Float_t padres[20][20]; //I don't expect bigger number of bins
175 //calculate padresponse function
177 for (padrow = fpadrow;padrow<=lpadrow;padrow++)
178 for (pad = fpad;pad<=lpad;pad++){
179 Float_t dy = (xyz[0]+Float_t(index[2]-padrow));
180 Float_t dx = (xyz[1]+Float_t(pad));
181 if (index[1]<fNInnerSector)
182 padres[padrow-fpadrow][pad-fpad]=fInnerPRF->GetPRF(dx*fInnerPadPitchWidth,dy*fInnerPadPitchLength);
185 padres[padrow-fpadrow][pad-fpad]=fOuter1PRF->GetPRF(dx*fOuterPadPitchWidth,dy*fOuter1PadPitchLength);}
187 padres[padrow-fpadrow][pad-fpad]=fOuter2PRF->GetPRF(dx*fOuterPadPitchWidth,dy*fOuter2PadPitchLength);}}}
188 //calculate time response function
190 for (time = ftime;time<=ltime;time++)
191 timeres[time-ftime]= fTimeRF->GetRF((-xyz[2]-xyz[3]+Float_t(time))*fZWidth);
192 //write over threshold values to stack
193 for (padrow = fpadrow;padrow<=lpadrow;padrow++)
194 for (pad = fpad;pad<=lpad;pad++)
195 for (time = ftime;time<=ltime;time++){
196 cweight = timeres[time-ftime]*padres[padrow-fpadrow][pad-fpad];
197 if (cweight>fResponseThreshold) {
198 fResponseBin[cindex3]=padrow;
199 fResponseBin[cindex3+1]=pad;
200 fResponseBin[cindex3+2]=time;
202 fResponseWeight[cindex]=cweight;
211 void AliTPCParamSR::TransformTo8(Float_t *xyz, Int_t *index) const
214 // transformate point to digit coordinate
216 if (index[0]==0) Transform0to1(xyz,index);
217 if (index[0]==1) Transform1to2(xyz,index);
218 if (index[0]==2) Transform2to3(xyz,index);
219 if (index[0]==3) Transform3to4(xyz,index);
220 if (index[0]==4) Transform4to8(xyz,index);
223 void AliTPCParamSR::TransformTo2(Float_t *xyz, Int_t *index) const
226 //transformate point to rotated coordinate
229 if (index[0]==0) Transform0to1(xyz,index);
230 if (index[0]==1) Transform1to2(xyz,index);
231 if (index[0]==4) Transform4to3(xyz,index);
232 if (index[0]==8) { //if we are in digit coordinate system transform to global
233 Transform8to4(xyz,index);
234 Transform4to3(xyz,index);
238 void AliTPCParamSR::CRXYZtoXYZ(Float_t *xyz,
239 const Int_t §or, const Int_t & padrow, Int_t option) const
241 //transform relative coordinates to absolute
242 Bool_t rel = ( (option&2)!=0);
243 Int_t index[3]={sector,padrow,0};
244 if (rel==kTRUE) Transform4to3(xyz,index);//if the position is relative to pad row
245 Transform2to1(xyz,index);
248 void AliTPCParamSR::XYZtoCRXYZ(Float_t *xyz,
249 Int_t §or, Int_t & padrow, Int_t option) const
251 //transform global position to the position relative to the sector padrow
252 //if option=0 X calculate absolute calculate sector
253 //if option=1 X absolute use input sector
254 //if option=2 X relative to pad row calculate sector
255 //if option=3 X relative use input sector
256 //!!!!!!!!! WE start to calculate rows from row = 0
258 Bool_t rel = ( (option&2)!=0);
260 //option 0 and 2 means that we don't have information about sector
261 if ((option&1)==0) Transform0to1(xyz,index); //we calculate sector number
264 Transform1to2(xyz,index);
265 Transform2to3(xyz,index);
266 //if we store relative position calculate position relative to pad row
267 if (rel==kTRUE) Transform3to4(xyz,index);
272 Float_t AliTPCParamSR::GetPrimaryLoss(Float_t */*x*/, Int_t *index, Float_t *angle)
276 Float_t padlength=GetPadPitchLength(index[1]);
277 Float_t a1=TMath::Sin(angle[0]);
279 Float_t a2=TMath::Sin(angle[1]);
281 Float_t length =padlength*TMath::Sqrt(1+a1+a2);
282 return length*fNPrimLoss;
285 Float_t AliTPCParamSR::GetTotalLoss(Float_t */*x*/, Int_t *index, Float_t *angle)
289 Float_t padlength=GetPadPitchLength(index[1]);
290 Float_t a1=TMath::Sin(angle[0]);
292 Float_t a2=TMath::Sin(angle[1]);
294 Float_t length =padlength*TMath::Sqrt(1+a1+a2);
295 return length*fNTotalLoss;
300 void AliTPCParamSR::GetClusterSize(Float_t *x, Int_t *index, Float_t */*angle*/, Int_t /*mode*/, Float_t *sigma)
303 //return cluster sigma2 (x,y) for particle at position x
304 // in this case x coordinata is in drift direction
305 //and y in pad row direction
306 //we suppose that input coordinate system is digit system
309 Float_t lx[3] = {x[0],x[1],x[2]};
310 Int_t li[3] = {index[0],index[1],index[2]};
312 // Float_t sigmadiff;
316 xx = lx[2]; //calculate drift length in cm
318 sigma[0]+= xx*GetDiffL()*GetDiffL();
319 sigma[1]+= xx*GetDiffT()*GetDiffT();
323 //sigma[0]=sigma[1]=0;
324 if (GetTimeRF()!=0) sigma[0]+=GetTimeRF()->GetSigma()*GetTimeRF()->GetSigma();
325 if ( (index[1]<fNInnerSector) &&(GetInnerPRF()!=0))
326 sigma[1]+=GetInnerPRF()->GetSigmaX()*GetInnerPRF()->GetSigmaX();
327 if ( (index[1]>=fNInnerSector) &&(index[2]<fNRowUp1) && (GetOuter1PRF()!=0))
328 sigma[1]+=GetOuter1PRF()->GetSigmaX()*GetOuter1PRF()->GetSigmaX();
329 if( (index[1]>=fNInnerSector) &&(index[2]>=fNRowUp1) && (GetOuter2PRF()!=0))
330 sigma[1]+=GetOuter2PRF()->GetSigmaX()*GetOuter2PRF()->GetSigmaX();
333 sigma[0]/= GetZWidth()*GetZWidth();
334 sigma[1]/=GetPadPitchWidth(index[0])*GetPadPitchWidth(index[0]);
340 void AliTPCParamSR::GetSpaceResolution(Float_t */*x*/, Int_t */*index*/, Float_t */*angle*/,
341 Float_t /*amplitude*/, Int_t /*mode*/, Float_t */*sigma*/)
348 Float_t AliTPCParamSR::GetAmp(Float_t */*x*/, Int_t */*index*/, Float_t */*angle*/)
356 Float_t * AliTPCParamSR::GetAnglesAccMomentum(Float_t *x, Int_t * index, Float_t* momentum, Float_t *angle)
359 //calculate angle of track to padrow at given position
360 // for given magnetic field and momentum of the particle
363 TransformTo2(x,index);
364 AliDetectorParam::GetAnglesAccMomentum(x,index,momentum,angle);
365 Float_t addangle = TMath::ASin(x[1]/GetPadRowRadii(index[1],index[2]));
371 Bool_t AliTPCParamSR::Update()
374 if (AliTPCParam::Update()==kFALSE) return kFALSE;
377 Float_t firstrow = fInnerRadiusLow + 1.575;
378 for( i= 0;i<fNRowLow;i++)
380 Float_t x = firstrow + fInnerPadPitchLength*(Float_t)i;
382 // number of pads per row
383 // Float_t y = (x-0.5*fInnerPadPitchLength)*tan(fInnerAngle/2.)-fInnerWireMount-
384 // fInnerPadPitchWidth/2.;
385 // 0 and fNRowLow+1 reserved for cross talk rows
386 fYInner[i+1] = x*tan(fInnerAngle/2.)-fInnerWireMount;
387 //fNPadsLow[i] = 1+2*(Int_t)(y/fInnerPadPitchWidth) ;
388 fNPadsLow[i] = AliTPCROC::Instance()->GetNPads(0,i) ; // ROC implement
391 fYInner[0]=(fPadRowLow[0]-fInnerPadPitchLength)*tan(fInnerAngle/2.)-fInnerWireMount;
392 fYInner[fNRowLow+1]=(fPadRowLow[fNRowLow-1]+fInnerPadPitchLength)*tan(fInnerAngle/2.)-fInnerWireMount;
393 firstrow = fOuterRadiusLow + 1.6;
394 for(i=0;i<fNRowUp;i++)
397 Float_t x = firstrow + fOuter1PadPitchLength*(Float_t)i;
399 // Float_t y =(x-0.5*fOuter1PadPitchLength)*tan(fOuterAngle/2.)-fOuterWireMount-
400 // fOuterPadPitchWidth/2.;
401 fYOuter[i+1]= x*tan(fOuterAngle/2.)-fOuterWireMount;
402 //fNPadsUp[i] = 1+2*(Int_t)(y/fOuterPadPitchWidth) ;
403 fNPadsUp[i] = AliTPCROC::Instance()->GetNPads(36,i) ; // ROC implement
405 fLastWireUp1=fPadRowUp[i] +0.625;
406 firstrow = fPadRowUp[i] + 0.5*(fOuter1PadPitchLength+fOuter2PadPitchLength);
411 Float_t x = firstrow + fOuter2PadPitchLength*(Float_t)(i-64);
413 //Float_t y =(x-0.5*fOuter2PadPitchLength)*tan(fOuterAngle/2.)-fOuterWireMount-
414 // fOuterPadPitchWidth/2.;
415 //fNPadsUp[i] = 1+2*(Int_t)(y/fOuterPadPitchWidth) ;
416 fNPadsUp[i] = AliTPCROC::Instance()->GetNPads(36,i) ; // ROC implement
418 fYOuter[i+1] = fPadRowUp[i]*tan(fOuterAngle/2.)-fOuterWireMount;
421 fYOuter[0]=(fPadRowUp[0]-fOuter1PadPitchLength)*tan(fOuterAngle/2.)-fOuterWireMount;
422 fYOuter[fNRowUp+1]=(fPadRowUp[fNRowUp-1]+fOuter2PadPitchLength)*tan(fOuterAngle/2.)-fOuterWireMount;
423 fNtRows = fNInnerSector*fNRowLow+fNOuterSector*fNRowUp;
427 Float_t AliTPCParamSR::GetYInner(Int_t irow) const
429 return fYInner[irow];
431 Float_t AliTPCParamSR::GetYOuter(Int_t irow) const
433 return fYOuter[irow];
436 void AliTPCParamSR::Streamer(TBuffer &R__b)
438 // Stream an object of class AliTPC.
440 if (R__b.IsReading()) {
441 Version_t R__v = R__b.ReadVersion(); if (R__v) { }
442 // TObject::Streamer(R__b);
443 AliTPCParam::Streamer(R__b);
444 // if (R__v < 2) return;
446 if (gGeoManager) ReadGeoMatrices();
448 R__b.WriteVersion(AliTPCParamSR::IsA());
449 //TObject::Streamer(R__b);
450 AliTPCParam::Streamer(R__b);
453 Int_t AliTPCParamSR::CalcResponseFast(Float_t* xyz, Int_t * index, Int_t row, Float_t phase)
456 //calculate bin response as function of the input position -x
457 //return number of valid response bin
459 //we suppose that coordinate is expressed in float digits
460 // it's mean coordinate system 8
461 //xyz[0] - electron position w.r.t. pad center, normalized to pad length,
462 //xyz[1] is float pad (center pad is number 0) and xyz[2] is float time bin
463 //xyz[3] - electron time in float time bin format
464 if ( (fInnerPRF==0)||(fOuter1PRF==0)||(fOuter2PRF==0) ||(fTimeRF==0) ){
465 Error("AliTPCParamSR", "response function was not adjusted");
469 const Int_t kpadn = 500;
470 const Float_t kfpadn = 500.;
471 const Int_t ktimen = 500;
472 const Float_t kftimen = 500.;
473 const Int_t kpadrn = 500;
474 const Float_t kfpadrn = 500.;
478 static Float_t prfinner[2*kpadrn][5*kpadn]; //pad divided by 50
479 static Float_t prfouter1[2*kpadrn][5*kpadn]; //prfouter division
480 static Float_t prfouter2[2*kpadrn][5*kpadn];
481 static Float_t kTanMax =0;
483 static Float_t rftime[5*ktimen]; //time division
484 static Int_t blabla=0;
485 static Float_t zoffset=0;
486 static Float_t zwidth=0;
487 static Float_t zoffset2=0;
488 static TH1F * hdiff=0;
489 static TH1F * hdiff1=0;
490 static TH1F * hdiff2=0;
492 if (blabla==0) { //calculate Response function - only at the begginning
493 kTanMax = TMath::ATan(10.*TMath::DegToRad());
494 hdiff =new TH1F("prf_diff","prf_diff",10000,-1,1);
495 hdiff1 =new TH1F("no_repsonse1","no_response1",10000,-1,1);
496 hdiff2 =new TH1F("no_response2","no_response2",10000,-1,1);
499 zoffset = GetZOffset();
501 zoffset2 = zoffset/zwidth;
502 for (Int_t i=0;i<5*ktimen;i++){
503 rftime[i] = fTimeRF->GetRF(((i-2.5*kftimen)/kftimen)*zwidth+zoffset);
505 for (Int_t i=0;i<5*kpadn;i++){
506 for (Int_t j=0;j<2*kpadrn;j++){
508 fInnerPRF->GetPRF((i-2.5*kfpadn)/kfpadn
509 *fInnerPadPitchWidth,(j-kfpadrn)/kfpadrn*fInnerPadPitchLength);
511 fOuter1PRF->GetPRF((i-2.5*kfpadn)/kfpadn
512 *fOuterPadPitchWidth,(j-kfpadrn)/kfpadrn*fOuter1PadPitchLength);
516 fOuter2PRF->GetPRF((i-2.5*kfpadn)/kfpadn
517 *fOuterPadPitchWidth,(j-kfpadrn)/kfpadrn*fOuter2PadPitchLength);
520 } // the above is calculated only once
522 // calculate central padrow, pad, time
523 Int_t npads = GetNPads(index[1],index[3]-1);
524 Int_t cpadrow = index[2]; // electrons are here
525 Int_t cpad = TMath::Nint(xyz[1]);
526 Int_t ctime = TMath::Nint(xyz[2]+zoffset2+xyz[3]);
528 Float_t dpadrow = xyz[0];
529 Float_t dpad = xyz[1]-cpad;
530 Float_t dtime = xyz[2]+zoffset2+xyz[3]-ctime+phase*0.25;
533 Int_t maxt =GetMaxTBin();
538 if (row>=0) { //if we are interesting about given pad row
539 fpadrow = row-cpadrow;
540 lpadrow = row-cpadrow;
542 fpadrow = (index[2]>1) ? -1 :0;
543 lpadrow = (index[2]<GetNRow(index[1])-1) ? 1:0;
546 Int_t fpad = (cpad > -npads/2+1) ? -2: -npads/2-cpad;
547 Int_t lpad = (cpad < npads/2-2) ? 2: npads/2-1-cpad;
548 Int_t ftime = (ctime>1) ? -2: -ctime;
549 Int_t ltime = (ctime<maxt-2) ? 2: maxt-ctime-1;
551 // cross talk from long pad to short one
552 if(row==fNRowUp1 && fpadrow==-1) {
553 dpadrow *= fOuter2PadPitchLength;
554 dpadrow += fOuterWWPitch;
555 dpadrow /= fOuter1PadPitchLength;
557 // cross talk from short pad to long one
558 if(row==fNRowUp1+1 && fpadrow==1){
559 dpadrow *= fOuter1PadPitchLength;
560 if(dpadrow < 0.) dpadrow = -1.; //protection against 3rd wire
561 dpadrow += fOuterWWPitch;
562 dpadrow /= fOuter2PadPitchLength;
567 Int_t apadrow = TMath::Nint((dpadrow-fpadrow)*kfpadrn+kfpadrn);
568 for (Int_t ipadrow = fpadrow; ipadrow<=lpadrow;ipadrow++){
569 if ( (apadrow<0) || (apadrow>=2*kpadrn))
571 // pad angular correction
572 Float_t angle = kTanMax*2.*(cpad+0.5)/Float_t(npads);
573 Float_t dpadangle =0;
574 if (index[1]<fNInnerSector){
575 dpadangle = angle*dpadrow*fInnerPadPitchLength/fInnerPadPitchWidth;
578 if(row < fNRowUp1+1){
579 dpadangle = angle*dpadrow*fOuter1PadPitchLength/fOuterPadPitchWidth;
582 dpadangle = angle*dpadrow*fOuter2PadPitchLength/fOuterPadPitchWidth;
585 if (ipadrow==0) dpadangle *=-1;
587 // Int_t apad= TMath::Nint((dpad-fpad)*kfpadn+2.5*kfpadn);
588 Int_t apad= TMath::Nint((dpad+dpadangle-fpad)*kfpadn+2.5*kfpadn);
589 for (Int_t ipad = fpad; ipad<=lpad;ipad++){
591 if (index[1]<fNInnerSector){
592 cweight=prfinner[apadrow][apad];
595 if(row < fNRowUp1+1){
596 cweight=prfouter1[apadrow][apad];
599 cweight=prfouter2[apadrow][apad];
602 // if (cweight<fResponseThreshold) continue;
603 Int_t atime = TMath::Nint((dtime-ftime)*kftimen+2.5*kftimen);
604 for (Int_t itime = ftime;itime<=ltime;itime++){
605 Float_t cweight2 = cweight*rftime[atime];
606 if (cweight2>fResponseThreshold) {
607 fResponseBin[cindex3++]=cpadrow+ipadrow;
608 fResponseBin[cindex3++]=cpad+ipad;
609 fResponseBin[cindex3++]=ctime+itime;
610 fResponseWeight[cindex++]=cweight2;