[u/mrichter/AliRoot.git] / TPC / AliTPCcalibCalib.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/


///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//   Component for redoing the reconstruction from the clusters and tracks
//      
//   The new calibration data used 
//
//   In reality it overwrites the content of the ESD 
//    

/*

  gSystem->Load("libANALYSIS");
  gSystem->Load("libTPCcalib");
  //
  gSystem->AddIncludePath("-I$ALICE_ROOT/TPC/macros");
  gROOT->LoadMacro("$ALICE_ROOT/TPC/macros/AliXRDPROOFtoolkit.cxx+")
  AliXRDPROOFtoolkit tool; 
  TChain * chainCl = tool.MakeChain("calib.txt","Clusters",0,1);
  chainCl->Lookup();
  TChain * chainTr = tool.MakeChain("calib.txt","Tracks",0,1);
  chainTr->Lookup();


*/


//  marian.ivanov@cern.ch
// 
#include "AliTPCcalibCalib.h"
#include "TSystem.h"
#include "TFile.h"
#include "TTreeStream.h"
#include "AliLog.h"
#include "TTimeStamp.h"
#include "AliESDEvent.h"
#include "AliESDfriend.h"
#include "AliESDtrack.h"
#include "AliTracker.h"
#include "AliTPCClusterParam.h"

#include "AliTPCcalibDB.h"
#include "AliTPCTransform.h"
#include "AliTPCclusterMI.h"
#include "AliTPCseed.h"

ClassImp(AliTPCcalibCalib)

AliTPCcalibCalib::AliTPCcalibCalib():
    AliTPCcalibBase()
{
  //
  // Constructor
  //
}


AliTPCcalibCalib::AliTPCcalibCalib(const Text_t *name, const Text_t *title) 
  :AliTPCcalibBase()
{  
  SetName(name);
  SetTitle(title);
}


AliTPCcalibCalib::AliTPCcalibCalib(const AliTPCcalibCalib&calib):
  AliTPCcalibBase(calib)
{
  //
  // copy constructor
  //
}

AliTPCcalibCalib &AliTPCcalibCalib::operator=(const AliTPCcalibCalib&calib){
  //
  //
  //
  ((AliTPCcalibBase *)this)->operator=(calib);
  return *this;
}


AliTPCcalibCalib::~AliTPCcalibCalib() {
  //
  // destructor
  //
}


void     AliTPCcalibCalib::Process(AliESDEvent *event){
  //
  // 
  //
  if (!event) {
    return;
  }  
  AliESDfriend *ESDfriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend"));
  if (!ESDfriend) {
   return;
  }
  
  if (GetDebugLevel()>20) printf("Hallo world: Im here\n");
  Int_t ntracks=event->GetNumberOfTracks();   
  //
  //
  //

  for (Int_t i=0;i<ntracks;++i) {
    AliESDtrack *track = event->GetTrack(i);  
    const AliExternalTrackParam * trackIn = track->GetInnerParam();
    const AliExternalTrackParam * trackOut = track->GetOuterParam();
    if (!trackIn) continue;
    if (!trackOut) continue;
   
    AliESDfriendTrack *friendTrack = ESDfriend->GetTrack(i);
    TObject *calibObject;
    AliTPCseed *seed = 0;
    for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) {
      if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break;
    }
    if (!seed) continue;
    RefitTrack(track, seed);
  }
  return;
}

Bool_t  AliTPCcalibCalib::RefitTrack(AliESDtrack * track, AliTPCseed *seed){
  //
  // Refit track
  //

  //
  // First apply calibration
  //

  AliTPCTransform *transform = AliTPCcalibDB::Instance()->GetTransform();
  for (Int_t irow=0;irow<159;irow++) {
    AliTPCclusterMI *cluster=seed->GetClusterPointer(irow);
    if (!cluster) continue; 
    AliTPCclusterMI cl0(*cluster);
    Double_t x[3]={cluster->GetRow(),cluster->GetPad(),cluster->GetTimeBin()};
    Int_t i[1]={cluster->GetDetector()};
    transform->Transform(x,i,0,1);
    //
    // get position correction
    //
    Int_t ipad=0;
    if (cluster->GetDetector()>35) ipad=1;
    Float_t dy =AliTPCClusterParam::SPosCorrection(0,ipad,cluster->GetPad(),cluster->GetTimeBin(),cluster->GetZ(),cluster->GetSigmaY2(),cluster->GetSigmaZ2(),cluster->GetMax());
    Float_t dz =AliTPCClusterParam::SPosCorrection(1,ipad,cluster->GetPad(),cluster->GetTimeBin(),cluster->GetZ(),cluster->GetSigmaY2(),cluster->GetSigmaZ2(),cluster->GetMax());
    //x[1]-=dy;
    //x[2]-=dz;

    //
    cluster->SetX(x[0]);
    cluster->SetY(x[1]);
    cluster->SetZ(x[2]);
    if (fStreamLevel>2){
      TTreeSRedirector *cstream = GetDebugStreamer();
      if (cstream){
	(*cstream)<<"Clusters"<<
	  "run="<<fRun<<              //  run number
	  "event="<<fEvent<<          //  event number
	  "time="<<fTime<<            //  time stamp of event
	  "trigger="<<fTrigger<<      //  trigger
	  "mag="<<fMagF<<             //  magnetic field
	  "cl0.="<<&cl0<<
	  "cl.="<<cluster<<
	  "cy="<<dy<<
	  "cz="<<dz<<
	  "\n";
      }
    }
  }
  Int_t ncl = seed->GetNumberOfClusters();
  Double_t covar[15];
  for (Int_t i=0;i<15;i++) covar[i]=0;
  covar[0]=10.*10.;
  covar[2]=10.*10.;
  covar[5]=10.*10./(64.*64.);
  covar[9]=10.*10./(64.*64.);
  covar[14]=1*1;

  // 
  // And now do refit
  //
  AliExternalTrackParam * trackInOld  = (AliExternalTrackParam*)track->GetInnerParam();
  AliExternalTrackParam * trackOutOld = (AliExternalTrackParam*)track->GetOuterParam();

  AliExternalTrackParam trackIn  = *trackOutOld;
  AliExternalTrackParam trackOut = *trackInOld;
  trackIn.ResetCovariance(200.);
  trackOut.ResetCovariance(200.);
  trackIn.AddCovariance(covar);
  trackOut.AddCovariance(covar);
  Double_t xyz[3];
  Int_t nclIn=0,nclOut=0;
  //
  // Refit out
  //
  for (Int_t irow=0; irow<160; irow++){
    AliTPCclusterMI *cl=seed->GetClusterPointer(irow);
    if (!cl) continue;
    if (cl->GetX()<80) continue;
    Int_t sector = cl->GetDetector();
    Float_t dalpha = TMath::DegToRad()*(sector%18*20.+10.)-trackOut.GetAlpha();

    if (TMath::Abs(dalpha)>0.01)
      trackOut.Rotate(TMath::DegToRad()*(sector%18*20.+10.));
    if (RejectCluster(cl,&trackOut)) continue;
    Double_t r[3]={cl->GetX(),cl->GetY(),cl->GetZ()};
    Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
    trackOut.GetXYZ(xyz);
    Double_t bz = AliTracker::GetBz(xyz);
    if (trackOut.PropagateTo(r[0],bz)) nclOut++;
    trackOut.Update(&r[1],cov);    
    
  }
  //
  // Refit in
  //

  for (Int_t irow=159; irow>0; irow--){
    AliTPCclusterMI *cl=seed->GetClusterPointer(irow);
    if (!cl) continue;
    if (cl->GetX()<80) continue;
    Int_t sector = cl->GetDetector();
    Float_t dalpha = TMath::DegToRad()*(sector%18*20.+10.)-trackIn.GetAlpha();
    if (TMath::Abs(dalpha)>0.01)
      trackIn.Rotate(TMath::DegToRad()*(sector%18*20.+10.));
    if (RejectCluster(cl,&trackIn)) continue;
    Double_t r[3]={cl->GetX(),cl->GetY(),cl->GetZ()};
    Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
    trackOut.GetXYZ(xyz);
    Double_t bz = AliTracker::GetBz(xyz);

    if (trackIn.PropagateTo(r[0],bz)) nclIn++;
    trackIn.Update(&r[1],cov);    
  }
  trackIn.Rotate(trackInOld->GetAlpha());
  trackOut.Rotate(trackOutOld->GetAlpha());
  //
  trackInOld->GetXYZ(xyz);
  Double_t bz = AliTracker::GetBz(xyz);
  trackIn.PropagateTo(trackInOld->GetX(),bz);
  //
  trackOutOld->GetXYZ(xyz);
  bz = AliTracker::GetBz(xyz);  
  trackOut.PropagateTo(trackOutOld->GetX(),bz);
  

  if (fStreamLevel>0){
    TTreeSRedirector *cstream = GetDebugStreamer();
    if (cstream){
      (*cstream)<<"Tracks"<<
	"run="<<fRun<<              //  run number
	"event="<<fEvent<<          //  event number
	"time="<<fTime<<            //  time stamp of event
	"trigger="<<fTrigger<<      //  trigger
	"mag="<<fMagF<<             //  magnetic field
	"nclIn="<<nclIn<<
	"nclOut="<<nclOut<<
	"ncl="<<ncl<<
	"TrIn0.="<<trackInOld<<
	"TrOut0.="<<trackOutOld<<
	"TrIn1.="<<&trackIn<<
	"TrOut1.="<<&trackOut<<
	"\n";
    }
  }
  //
  // And now rewrite ESDtrack
  //
 
  (*trackInOld)  = trackIn;
  (*trackOutOld) = trackOut;
  AliExternalTrackParam *t = &trackIn;
  track->Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance());
  return kTRUE;
}


Bool_t AliTPCcalibCalib::RejectCluster(AliTPCclusterMI* cl, AliExternalTrackParam * param){
  //
  // check the acceptance of cluster
  // Cut on edge effects
  //
  Bool_t isReject = kFALSE;
  Float_t edgeY = cl->GetX()*TMath::Tan(TMath::Pi()/18);
  Float_t dist  = edgeY - TMath::Abs(cl->GetY());
  if (param)  dist  = TMath::Abs(edgeY - TMath::Abs(param->GetY()));
  if (dist<3) isReject=kTRUE;
  if (cl->GetType()<0) isReject=kTRUE;
  return isReject;
}
Commit	Line	Data
9dcfce73	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	///////////////////////////////////////////////////////////////////////////////
	18	// //
	19	// Component for redoing the reconstruction from the clusters and tracks
	20	//
	21	// The new calibration data used
	22	//
	23	// In reality it overwrites the content of the ESD
	24	//
	25
3bf5c7a6	26	/*
	27
	28	gSystem->Load("libANALYSIS");
	29	gSystem->Load("libTPCcalib");
	30	//
	31	gSystem->AddIncludePath("-I$ALICE_ROOT/TPC/macros");
	32	gROOT->LoadMacro("$ALICE_ROOT/TPC/macros/AliXRDPROOFtoolkit.cxx+")
	33	AliXRDPROOFtoolkit tool;
11c7a854	34	TChain * chainCl = tool.MakeChain("calib.txt","Clusters",0,1);
	35	chainCl->Lookup();
	36	TChain * chainTr = tool.MakeChain("calib.txt","Tracks",0,1);
	37	chainTr->Lookup();
3bf5c7a6	38
	39
	40
	41	*/
	42
	43
	44
9dcfce73	45	// marian.ivanov@cern.ch
	46	//
	47	#include "AliTPCcalibCalib.h"
	48	#include "TSystem.h"
	49	#include "TFile.h"
	50	#include "TTreeStream.h"
	51	#include "AliLog.h"
	52	#include "TTimeStamp.h"
	53	#include "AliESDEvent.h"
	54	#include "AliESDfriend.h"
	55	#include "AliESDtrack.h"
	56	#include "AliTracker.h"
11c7a854	57	#include "AliTPCClusterParam.h"
9dcfce73	58
	59	#include "AliTPCcalibDB.h"
	60	#include "AliTPCTransform.h"
	61	#include "AliTPCclusterMI.h"
	62	#include "AliTPCseed.h"
	63
	64	ClassImp(AliTPCcalibCalib)
	65
	66	AliTPCcalibCalib::AliTPCcalibCalib():
	67	AliTPCcalibBase()
	68	{
	69	//
	70	// Constructor
	71	//
	72	}
	73
	74
	75	AliTPCcalibCalib::AliTPCcalibCalib(const Text_t name, const Text_t title)
	76	:AliTPCcalibBase()
	77	{
	78	SetName(name);
	79	SetTitle(title);
	80	}
	81
	82
	83	AliTPCcalibCalib::AliTPCcalibCalib(const AliTPCcalibCalib&calib):
	84	AliTPCcalibBase(calib)
	85	{
	86	//
	87	// copy constructor
	88	//
	89	}
	90
	91	AliTPCcalibCalib &AliTPCcalibCalib::operator=(const AliTPCcalibCalib&calib){
	92	//
	93	//
	94	//
	95	((AliTPCcalibBase *)this)->operator=(calib);
	96	return *this;
	97	}
	98
	99
	100	AliTPCcalibCalib::~AliTPCcalibCalib() {
	101	//
	102	// destructor
	103	//
	104	}
	105
	106
	107	void AliTPCcalibCalib::Process(AliESDEvent *event){
	108	//
	109	//
	110	//
	111	if (!event) {
	112	return;
	113	}
	114	AliESDfriend ESDfriend=static_cast<AliESDfriend>(event->FindListObject("AliESDfriend"));
	115	if (!ESDfriend) {
	116	return;
	117	}
	118
	119	if (GetDebugLevel()>20) printf("Hallo world: Im here\n");
	120	Int_t ntracks=event->GetNumberOfTracks();
	121	//
122	//
123	//
124
125	for (Int_t i=0;i<ntracks;++i) {
126	AliESDtrack *track = event->GetTrack(i);
127	const AliExternalTrackParam * trackIn = track->GetInnerParam();
128	const AliExternalTrackParam * trackOut = track->GetOuterParam();
129	if (!trackIn) continue;
130	if (!trackOut) continue;
131
132	AliESDfriendTrack *friendTrack = ESDfriend->GetTrack(i);
133	TObject *calibObject;
134	AliTPCseed *seed = 0;
135	for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) {
136	if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break;
137	}
138	if (!seed) continue;
139	RefitTrack(track, seed);
140	}
141	return;
142	}
143
144	Bool_t AliTPCcalibCalib::RefitTrack(AliESDtrack * track, AliTPCseed *seed){
145	//
146	// Refit track
147	//
148
149	//
150	// First apply calibration
151	//
152
153	AliTPCTransform *transform = AliTPCcalibDB::Instance()->GetTransform();
154	for (Int_t irow=0;irow<159;irow++) {
155	AliTPCclusterMI *cluster=seed->GetClusterPointer(irow);
156	if (!cluster) continue;
157	AliTPCclusterMI cl0(*cluster);
158	Double_t x[3]={cluster->GetRow(),cluster->GetPad(),cluster->GetTimeBin()};
159	Int_t i[1]={cluster->GetDetector()};
160	transform->Transform(x,i,0,1);
11c7a854	161	//
	162	// get position correction
	163	//
	164	Int_t ipad=0;
	165	if (cluster->GetDetector()>35) ipad=1;
	166	Float_t dy =AliTPCClusterParam::SPosCorrection(0,ipad,cluster->GetPad(),cluster->GetTimeBin(),cluster->GetZ(),cluster->GetSigmaY2(),cluster->GetSigmaZ2(),cluster->GetMax());
	167	Float_t dz =AliTPCClusterParam::SPosCorrection(1,ipad,cluster->GetPad(),cluster->GetTimeBin(),cluster->GetZ(),cluster->GetSigmaY2(),cluster->GetSigmaZ2(),cluster->GetMax());
	168	//x[1]-=dy;
	169	//x[2]-=dz;
	170
9dcfce73	171	//
	172	cluster->SetX(x[0]);
	173	cluster->SetY(x[1]);
	174	cluster->SetZ(x[2]);
	175	if (fStreamLevel>2){
	176	TTreeSRedirector *cstream = GetDebugStreamer();
	177	if (cstream){
	178	(*cstream)<<"Clusters"<<
108953e9	179	"run="<<fRun<< // run number
	180	"event="<<fEvent<< // event number
	181	"time="<<fTime<< // time stamp of event
	182	"trigger="<<fTrigger<< // trigger
	183	"mag="<<fMagF<< // magnetic field
9dcfce73	184	"cl0.="<<&cl0<<
9dcfce73	185	"cl.="<<cluster<<
11c7a854	186	"cy="<<dy<<
11c7a854	187	"cz="<<dz<<
9dcfce73	188	"\n";
	189	}
	190	}
	191	}
11c7a854	192	Int_t ncl = seed->GetNumberOfClusters();
	193	Double_t covar[15];
	194	for (Int_t i=0;i<15;i++) covar[i]=0;
	195	covar[0]=10.*10.;
	196	covar[2]=10.*10.;
	197	covar[5]=10.10./(64.64.);
	198	covar[9]=10.10./(64.64.);
	199	covar[14]=1*1;
	200
9dcfce73	201	//
	202	// And now do refit
	203	//
11c7a854	204	AliExternalTrackParam * trackInOld = (AliExternalTrackParam*)track->GetInnerParam();
9dcfce73	205	AliExternalTrackParam * trackOutOld = (AliExternalTrackParam*)track->GetOuterParam();
	206
	207	AliExternalTrackParam trackIn = *trackOutOld;
	208	AliExternalTrackParam trackOut = *trackInOld;
11c7a854	209	trackIn.ResetCovariance(200.);
	210	trackOut.ResetCovariance(200.);
	211	trackIn.AddCovariance(covar);
	212	trackOut.AddCovariance(covar);
9dcfce73	213	Double_t xyz[3];
	214	Int_t nclIn=0,nclOut=0;
	215	//
	216	// Refit out
	217	//
	218	for (Int_t irow=0; irow<160; irow++){
	219	AliTPCclusterMI *cl=seed->GetClusterPointer(irow);
	220	if (!cl) continue;
	221	if (cl->GetX()<80) continue;
	222	Int_t sector = cl->GetDetector();
	223	Float_t dalpha = TMath::DegToRad()(sector%1820.+10.)-trackOut.GetAlpha();
	224
	225	if (TMath::Abs(dalpha)>0.01)
	226	trackOut.Rotate(TMath::DegToRad()(sector%1820.+10.));
3bf5c7a6	227	if (RejectCluster(cl,&trackOut)) continue;
9dcfce73	228	Double_t r[3]={cl->GetX(),cl->GetY(),cl->GetZ()};
	229	Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
	230	trackOut.GetXYZ(xyz);
	231	Double_t bz = AliTracker::GetBz(xyz);
	232	if (trackOut.PropagateTo(r[0],bz)) nclOut++;
	233	trackOut.Update(&r[1],cov);
	234
	235	}
	236	//
	237	// Refit in
	238	//
	239
	240	for (Int_t irow=159; irow>0; irow--){
	241	AliTPCclusterMI *cl=seed->GetClusterPointer(irow);
	242	if (!cl) continue;
	243	if (cl->GetX()<80) continue;
	244	Int_t sector = cl->GetDetector();
	245	Float_t dalpha = TMath::DegToRad()(sector%1820.+10.)-trackIn.GetAlpha();
	246	if (TMath::Abs(dalpha)>0.01)
	247	trackIn.Rotate(TMath::DegToRad()(sector%1820.+10.));
3bf5c7a6	248	if (RejectCluster(cl,&trackIn)) continue;
9dcfce73	249	Double_t r[3]={cl->GetX(),cl->GetY(),cl->GetZ()};
	250	Double_t cov[3]={0.01,0.,0.01}; //TODO: correct error parametrisation
	251	trackOut.GetXYZ(xyz);
	252	Double_t bz = AliTracker::GetBz(xyz);
	253
	254	if (trackIn.PropagateTo(r[0],bz)) nclIn++;
	255	trackIn.Update(&r[1],cov);
	256	}
3bf5c7a6	257	trackIn.Rotate(trackInOld->GetAlpha());
	258	trackOut.Rotate(trackOutOld->GetAlpha());
	259	//
	260	trackInOld->GetXYZ(xyz);
	261	Double_t bz = AliTracker::GetBz(xyz);
	262	trackIn.PropagateTo(trackInOld->GetX(),bz);
	263	//
	264	trackOutOld->GetXYZ(xyz);
	265	bz = AliTracker::GetBz(xyz);
	266	trackOut.PropagateTo(trackOutOld->GetX(),bz);
	267
9dcfce73	268
	269	if (fStreamLevel>0){
	270	TTreeSRedirector *cstream = GetDebugStreamer();
	271	if (cstream){
	272	(*cstream)<<"Tracks"<<
108953e9	273	"run="<<fRun<< // run number
	274	"event="<<fEvent<< // event number
	275	"time="<<fTime<< // time stamp of event
	276	"trigger="<<fTrigger<< // trigger
	277	"mag="<<fMagF<< // magnetic field
9dcfce73	278	"nclIn="<<nclIn<<
	279	"nclOut="<<nclOut<<
	280	"ncl="<<ncl<<
	281	"TrIn0.="<<trackInOld<<
	282	"TrOut0.="<<trackOutOld<<
	283	"TrIn1.="<<&trackIn<<
	284	"TrOut1.="<<&trackOut<<
	285	"\n";
	286	}
	287	}
3bf5c7a6	288	//
	289	// And now rewrite ESDtrack
	290	//
	291
	292	(*trackInOld) = trackIn;
	293	(*trackOutOld) = trackOut;
	294	AliExternalTrackParam *t = &trackIn;
	295	track->Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance());
2cfb8d90	296	return kTRUE;
9dcfce73	297	}
	298
	299
	300
	301	Bool_t AliTPCcalibCalib::RejectCluster(AliTPCclusterMI* cl, AliExternalTrackParam * param){
	302	//
	303	// check the acceptance of cluster
	304	// Cut on edge effects
	305	//
	306	Bool_t isReject = kFALSE;
	307	Float_t edgeY = cl->GetX()*TMath::Tan(TMath::Pi()/18);
	308	Float_t dist = edgeY - TMath::Abs(cl->GetY());
	309	if (param) dist = TMath::Abs(edgeY - TMath::Abs(param->GetY()));
	310	if (dist<3) isReject=kTRUE;
	311	if (cl->GetType()<0) isReject=kTRUE;
	312	return isReject;
	313	}
	314
	315