#include "TMath.h"
#include "AliLog.h"
#include "AliTPCExB.h"
+#include "AliTPCCorrection.h"
#include "TGeoMatrix.h"
+#include "AliTPCRecoParam.h"
+#include "AliTPCCalibVdrift.h"
#include "AliTPCTransform.h"
+#include "AliMagF.h"
+#include "TGeoGlobalMagField.h"
+#include "AliTracker.h"
+#include <AliCTPTimeParams.h>
ClassImp(AliTPCTransform)
- AliTPCTransform::AliTPCTransform():
- AliTransform()
+AliTPCTransform::AliTPCTransform():
+ AliTransform(),
+ fCurrentRecoParam(0), //! current reconstruction parameters
+ fCurrentRun(0), //! current run
+ fCurrentTimeStamp(0) //! current time stamp
+{
+ //
+ // Speed it up a bit!
+ //
+ for (Int_t i=0;i<18;++i) {
+ Double_t alpha=TMath::DegToRad()*(10.+20.*(i%18));
+ fSins[i]=TMath::Sin(alpha);
+ fCoss[i]=TMath::Cos(alpha);
+ }
+ fPrimVtx[0]=0;
+ fPrimVtx[1]=0;
+ fPrimVtx[2]=0;
+}
+AliTPCTransform::AliTPCTransform(const AliTPCTransform& transform):
+ AliTransform(transform),
+ fCurrentRecoParam(transform.fCurrentRecoParam), //! current reconstruction parameters
+ fCurrentRun(transform.fCurrentRun), //! current run
+ fCurrentTimeStamp(transform.fCurrentTimeStamp) //! current time stamp
{
//
// Speed it up a bit!
// line approximation
//
-
Int_t row=TMath::Nint(x[0]);
Int_t pad=TMath::Nint(x[1]);
Int_t sector=i[0];
- AliTPCcalibDB* calib=AliTPCcalibDB::Instance();
+ AliTPCcalibDB* calib=AliTPCcalibDB::Instance();
//
AliTPCCalPad * time0TPC = calib->GetPadTime0();
+ AliTPCCalPad * distortionMapY = calib->GetDistortionMap(0);
+ AliTPCCalPad * distortionMapZ = calib->GetDistortionMap(1);
+ AliTPCCalPad * distortionMapR = calib->GetDistortionMap(2);
AliTPCParam * param = calib->GetParameters();
+ AliTPCCorrection * correction = calib->GetTPCComposedCorrection(); // first user defined correction // if does not exist try to get it from calibDB array
+ if (!correction) correction = calib->GetTPCComposedCorrection(AliTracker::GetBz());
if (!time0TPC){
AliFatal("Time unisochronity missing");
}
// Alignment
//TODO: calib->GetParameters()->GetClusterMatrix(sector)->LocalToMaster(x,xx);
RotatedGlobal2Global(sector,x);
+
+ //
+ // old ExB correction
//
+ if(fCurrentRecoParam&&fCurrentRecoParam->GetUseExBCorrection()) {
+
+ calib->GetExB()->Correct(x,xx);
+
+ } else {
+
+ xx[0] = x[0];
+ xx[1] = x[1];
+ xx[2] = x[2];
+ }
+
//
- // ExB correction
+ // new composed correction - will replace soon ExB correction
//
- calib->GetExB()->Correct(x,xx);
+ if(fCurrentRecoParam&&fCurrentRecoParam->GetUseComposedCorrection()&&correction) {
+ Float_t distPoint[3]={xx[0],xx[1],xx[2]};
+ correction->CorrectPoint(distPoint, sector);
+ xx[0]=distPoint[0];
+ xx[1]=distPoint[1];
+ xx[2]=distPoint[2];
+ }
+
+
//
// Time of flight correction
//
- const Int_t kNIS=param->GetNInnerSector(), kNOS=param->GetNOuterSector();
- Float_t sign=1;
- if (sector < kNIS) {
- sign = (sector < kNIS/2) ? 1 : -1;
- } else {
- sign = ((sector-kNIS) < kNOS/2) ? 1 : -1;
+ if (fCurrentRecoParam&&fCurrentRecoParam->GetUseTOFCorrection()){
+ const Int_t kNIS=param->GetNInnerSector(), kNOS=param->GetNOuterSector();
+ Float_t sign=1;
+ if (sector < kNIS) {
+ sign = (sector < kNIS/2) ? 1 : -1;
+ } else {
+ sign = ((sector-kNIS) < kNOS/2) ? 1 : -1;
+ }
+ Float_t deltaDr =0;
+ Float_t dist=0;
+ dist+=(fPrimVtx[0]-x[0])*(fPrimVtx[0]-x[0]);
+ dist+=(fPrimVtx[1]-x[1])*(fPrimVtx[1]-x[1]);
+ dist+=(fPrimVtx[2]-x[2])*(fPrimVtx[2]-x[2]);
+ dist = TMath::Sqrt(dist);
+ // drift length correction because of TOF
+ // the drift velocity is in cm/s therefore multiplication by 0.01
+ deltaDr = (dist*(0.01*param->GetDriftV()))/TMath::C();
+ xx[2]+=sign*deltaDr;
}
- Float_t deltaDr =0;
- Float_t dist=0;
- dist+=(fPrimVtx[0]-x[0])*(fPrimVtx[0]-x[0]);
- dist+=(fPrimVtx[1]-x[1])*(fPrimVtx[1]-x[1]);
- dist+=(fPrimVtx[0]-x[2])*(fPrimVtx[0]-x[2]);
- dist = TMath::Sqrt(dist);
- // drift length correction because of TOF
- // the drift velocity is in cm/s therefore multiplication by 0.01
- deltaDr = (dist*(0.01*param->GetDriftV()))/TMath::C();
- xx[2]+=sign*deltaDr;
+ //
+ //
+ //
+
//
Global2RotatedGlobal(sector,xx);
+
+ //
+ // Apply non linear distortion correction
+ //
+ if (distortionMapY ){
+ // wt - to get it form the OCDB
+ // ignore T1 and T2
+ AliMagF* magF= (AliMagF*)TGeoGlobalMagField::Instance()->GetField();
+ Double_t bzField = magF->SolenoidField()/10.; //field in T
+ Double_t vdrift = param->GetDriftV()/1000000.; // [cm/us] // From dataBase: to be updated: per second (ideally)
+ Double_t ezField = 400; // [V/cm] // to be updated: never (hopefully)
+ if (sector%36<18) ezField*=-1;
+ Double_t wt = -10.0 * (bzField*10) * vdrift / ezField ;
+ Double_t c0=1./(1.+wt*wt);
+ Double_t c1=wt/c0;
+
+ //can be switch on for each dimension separatelly
+ if (fCurrentRecoParam->GetUseFieldCorrection()&0x2)
+ if (distortionMapY){
+ xx[1]-= c0*distortionMapY->GetCalROC(sector)->GetValue(row,pad);
+ xx[0]-= c1*distortionMapY->GetCalROC(sector)->GetValue(row,pad);
+ }
+ if (fCurrentRecoParam->GetUseFieldCorrection()&0x4)
+ if (distortionMapZ)
+ xx[2]-=distortionMapZ->GetCalROC(sector)->GetValue(row,pad);
+ if (fCurrentRecoParam->GetUseFieldCorrection()&0x8)
+ if (distortionMapR){
+ xx[0]-= c0*distortionMapR->GetCalROC(sector)->GetValue(row,pad);
+ xx[1]-=-c1*distortionMapR->GetCalROC(sector)->GetValue(row,pad)*wt;
+ }
+
+ }
+ //
+
//
x[0]=xx[0];x[1]=xx[1];x[2]=xx[2];
}
//
//
//
+ const Int_t kMax =60; // cache for 60 seconds
+ static Int_t lastStamp=-1; //cached values
+ static Double_t lastCorr = 1;
+ //
AliTPCcalibDB* calib=AliTPCcalibDB::Instance();
AliTPCParam * param = calib->GetParameters();
+ AliTPCCalibVdrift *driftCalib = AliTPCcalibDB::Instance()->GetVdrift(fCurrentRun);
+ Double_t driftCorr = 1.;
+ if (driftCalib){
+ //
+ // caching drift correction - temp. fix
+ // Extremally slow procedure
+ if ( TMath::Abs((lastStamp)-Int_t(fCurrentTimeStamp))<kMax){
+ driftCorr = lastCorr;
+ }else{
+ driftCorr = 1.+(driftCalib->GetPTRelative(fCurrentTimeStamp,0)+ driftCalib->GetPTRelative(fCurrentTimeStamp,1))*0.5;
+ lastCorr=driftCorr;
+ lastStamp=fCurrentTimeStamp;
+
+ }
+ }
+ //
+ // simple caching non thread save
+ static Double_t vdcorrectionTime=1;
+ static Double_t vdcorrectionTimeGY=0;
+ static Double_t time0corrTime=0;
+ static Int_t lastStampT=-1;
+ //
+ if (lastStampT!=(Int_t)fCurrentTimeStamp){
+ lastStampT=fCurrentTimeStamp;
+ if(fCurrentRecoParam&&fCurrentRecoParam->GetUseDriftCorrectionTime()>0) {
+ vdcorrectionTime = (1+AliTPCcalibDB::Instance()->
+ GetVDriftCorrectionTime(fCurrentTimeStamp,
+ fCurrentRun,
+ sector%36>=18,
+ fCurrentRecoParam->GetUseDriftCorrectionTime()));
+ time0corrTime= AliTPCcalibDB::Instance()->
+ GetTime0CorrectionTime(fCurrentTimeStamp,
+ fCurrentRun,
+ sector%36>=18,
+ fCurrentRecoParam->GetUseDriftCorrectionTime());
+ }
+ //
+ if(fCurrentRecoParam&&fCurrentRecoParam->GetUseDriftCorrectionGY()>0) {
+
+ Double_t corrGy= AliTPCcalibDB::Instance()->
+ GetVDriftCorrectionGy(fCurrentTimeStamp,
+ AliTPCcalibDB::Instance()->GetRun(),
+ sector%36>=18,
+ fCurrentRecoParam->GetUseDriftCorrectionGY());
+ vdcorrectionTimeGY = corrGy;
+ }
+ }
+
+
if (!param){
AliFatal("Parameters missing");
}
//
const Int_t kNIS=param->GetNInnerSector(), kNOS=param->GetNOuterSector();
Double_t sign = 1.;
- Double_t zwidth = param->GetZWidth();
+ Double_t zwidth = param->GetZWidth()*driftCorr;
+ Float_t xyzPad[3];
+ AliTPCROC::Instance()->GetPositionGlobal(sector, TMath::Nint(x[0]) ,TMath::Nint(x[1]), xyzPad);
+ if (AliTPCRecoParam:: GetUseTimeCalibration()) zwidth*=vdcorrectionTime*(1+xyzPad[1]*vdcorrectionTimeGY);
Double_t padWidth = 0;
Double_t padLength = 0;
Double_t maxPad = 0;
// Y coordinate
//
x[1]=(x[1]-0.5*maxPad)*padWidth;
+ // pads are mirrorred on C-side
+ if (sector%36>17){
+ x[1]*=-1;
+ }
+
+ //
+
//
// Z coordinate
//
+ if (AliTPCcalibDB::Instance()->IsTrgL0()){
+ // by defualt we assume L1 trigger is used - make a correction in case of L0
+ AliCTPTimeParams* ctp = AliTPCcalibDB::Instance()->GetCTPTimeParams();
+ if (ctp){
+ //for TPC standalone runs no ctp info
+ Double_t delay = ctp->GetDelayL1L0()*0.000000025;
+ x[2]-=delay/param->GetTSample();
+ }
+ }
+ x[2]-= param->GetNTBinsL1();
x[2]*= zwidth; // tranform time bin to the distance to the ROC
- x[2]-= 3.*param->GetZSigma() + param->GetNTBinsL1()*zwidth;
+ x[2]-= 3.*param->GetZSigma() + time0corrTime;
// subtract the time offsets
x[2] = sign*( param->GetZLength(sector) - x[2]);
}
Double_t cos,sin;
GetCosAndSin(sector,cos,sin);
Double_t tmp=x[0];
- x[0]= cos*tmp+sin*x[1];
- x[1]=-sin*tmp+cos*x[1];
+ x[0]= cos*tmp-sin*x[1];
+ x[1]=+sin*tmp+cos*x[1];
}
void AliTPCTransform::Global2RotatedGlobal(Int_t sector,Double_t *x) const {
Double_t cos,sin;
GetCosAndSin(sector,cos,sin);
Double_t tmp=x[0];
- x[0]= cos*tmp-sin*x[1];
- x[1]= sin*tmp+cos*x[1];
+ x[0]= cos*tmp+sin*x[1];
+ x[1]= -sin*tmp+cos*x[1];
}
void AliTPCTransform::GetCosAndSin(Int_t sector,Double_t &cos,
}
+void AliTPCTransform::ApplyTransformations(Double_t */*xyz*/, Int_t /*volID*/){
+ //
+ // Modify global position
+ // xyz - global xyz position
+ // volID - volID of detector (sector number)
+ //
+ //
+
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff