#include "AliTPCBuffer.h"
#include "AliTPCDDLRawData.h"
#include "AliLog.h"
+#include "AliTPCcalibDB.h"
+#include "AliTPCCalPad.h"
+#include "AliTPCCalROC.h"
+#include "AliTPCExB.h"
#include "AliRawReader.h"
#include "AliTPCRawStream.h"
fHitType(0),
fDigitsSwitch(0),
fSide(0),
+ fPrimaryIonisation(0),
fNoiseDepth(0),
fNoiseTable(0),
fCurrentNoise(0),
- fActiveSectors(0)
+ fActiveSectors(0),
+ fGainFactor(1.)
+
{
//
fHitType(0),
fDigitsSwitch(0),
fSide(0),
+ fPrimaryIonisation(0),
fNoiseDepth(0),
fNoiseTable(0),
fCurrentNoise(0),
- fActiveSectors(0)
+ fActiveSectors(0),
+ fGainFactor(1.)
+
{
//
// Standard constructor
AliMixture(12,"Ne-CO2-N-1",amat,zmat,density,4,wmat);
AliMixture(13,"Ne-CO2-N-2",amat,zmat,density,4,wmat);
-
+ AliMixture(30,"Ne-CO2-N-3",amat,zmat,density,4,wmat);
//----------------------------------------------------------------------
// solid materials
//----------------------------------------------------------------------
density=7.87;
AliMaterial(29,"Fe",amat[0],zmat[0],density,999.,999.);
+ //
+ // Peek - (C6H4-O-OC6H4-O-C6H4-CO)n
+ amat[0]=12.011;
+ amat[1]=1.;
+ amat[2]=15.9994;
+
+ zmat[0]=6.;
+ zmat[1]=1.;
+ zmat[2]=8.;
+
+ wmat[0]=19.;
+ wmat[1]=12.;
+ wmat[2]=3.;
+ //
+ density=1.3;
+ //
+ AliMixture(30,"Peek",amat,zmat,density,-3,wmat);
+ //
+ // Ceramics - Al2O3
+ //
+ amat[0] = 26.98;
+ amat[1]= 15.9994;
+
+ zmat[0] = 13.;
+ zmat[1]=8.;
+
+ wmat[0]=2.;
+ wmat[1]=3.;
+
+ density = 3.97;
+
+ AliMixture(31,"Alumina",amat,zmat,density,-2,wmat);
+
+ //
+ // liquids
+ //
+
+ // water
+
+ amat[0]=1.;
+ amat[1]=15.9994;
+
+ zmat[0]=1.;
+ zmat[1]=8.;
+
+ wmat[0]=2.;
+ wmat[1]=1.;
+
+ density=1.;
+
+ AliMixture(32,"Water",amat,zmat,density,-2,wmat);
//----------------------------------------------------------
// tracking media for gases
AliMedium(1, "Ne-CO2-N-1", 12, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
AliMedium(2, "Ne-CO2-N-2", 13, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
- AliMedium(20, "Ne-CO2-N-3", 13, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
+ AliMedium(20, "Ne-CO2-N-3", 30, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
//-----------------------------------------------------------
// tracking media for solids
//-----------------------------------------------------------
AliMedium(16,"G10",22,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
AliMedium(17,"Plexiglas",27,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
AliMedium(18,"Steel",29,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
-
+ AliMedium(19,"Peek",30,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
+ AliMedium(21,"Alumina",31,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
+ AliMedium(22,"Water",32,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
}
void AliTPC::GenerNoise(Int_t tablesize)
for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
//PH runLoader->GetEvent(iEvent);
- SetActiveSectors();
Hits2Digits(iEvent);
}
//----------------------------------------------------
AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::GetRunLoaderName());
rl->GetEvent(eventnumber);
+ SetActiveSectors();
if (fLoader->TreeH() == 0x0) {
if(fLoader->LoadHits()) {
AliError("Can not load hits.");
// contains the track label and the position of electrons.
//-----------------------------------------------------------------
+ //
+ // The trasport of the electrons through TPC drift volume
+ // Drift (drift velocity + velocity map(not yet implemented)))
+ // Application of the random processes (diffusion, gas gain)
+ // Systematic effects (ExB effect in drift volume + ROCs)
+ //
+ // Algorithm:
+ // Loop over primary electrons:
+ // Creation of the secondary electrons
+ // Loop over electrons (primary+ secondaries)
+ // Global coordinate frame:
+ // 1. Skip electrons if attached
+ // 2. ExB effect in drift volume
+ // a.) Simulation calib->GetExB()->CorrectInverse(dxyz0,dxyz1);
+ // b.) Reconstruction - calib->GetExB()->CorrectInverse(dxyz0,dxyz1);
+ // 3. Generation of gas gain (Random - Exponential distribution)
+ // 4. TransportElectron function (diffusion)
+ //
+ // 5. Conversion to the local coordinate frame pad-row, pad, timebin
+ // 6. Apply Time0 shift - AliTPCCalPad class
+ // a.) Plus sign in simulation
+ // b.) Minus sign in reconstruction
+ // end of loop
+ //
//-----------------------------------------------------------------
// Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
+ // Origin: Marian Ivanov, marian.ivanov@cern.ch
//-----------------------------------------------------------------
+ AliTPCcalibDB* const calib=AliTPCcalibDB::Instance();
Float_t gasgain = fTPCParam->GetGasGain();
+ gasgain = gasgain/fGainFactor;
Int_t i;
Float_t xyz[5];
for(Int_t nel=0;nel<qI;nel++){
// skip if electron lost due to the attachment
if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
- xyz[0]=tpcHit->X();
- xyz[1]=tpcHit->Y();
- xyz[2]=tpcHit->Z();
+
+ //
+ // ExB effect
+ //
+ Double_t dxyz0[3],dxyz1[3];
+ dxyz0[0]=tpcHit->X();
+ dxyz0[1]=tpcHit->Y();
+ dxyz0[2]=tpcHit->Z();
+ if (calib->GetExB()){
+ calib->GetExB()->CorrectInverse(dxyz0,dxyz1);
+ }else{
+ AliError("Not valid ExB calibration");
+ dxyz1[0]=tpcHit->X();
+ dxyz1[1]=tpcHit->Y();
+ dxyz1[2]=tpcHit->Z();
+ }
+ xyz[0]=dxyz1[0];
+ xyz[1]=dxyz1[1];
+ xyz[2]=dxyz1[2];
+ //
+ //
//
// protection for the nonphysical avalanche size (10**6 maximum)
//
Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
index[0]=1;
-
+
TransportElectron(xyz,index);
Int_t rowNumber;
fTPCParam->GetPadRow(xyz,index);
+ //
+ // Add Time0 correction due unisochronity
+ // xyz[0] - pad row coordinate
+ // xyz[1] - pad coordinate
+ // xyz[2] - is in now time bin coordinate system
+ Float_t correction =0;
+ if (calib->GetPadTime0()){
+ if (!calib->GetPadTime0()->GetCalROC(isec)) continue;
+ correction = calib->GetPadTime0()->GetCalROC(isec)->GetValue(TMath::Nint(xyz[0]),TMath::Nint(xyz[1]));
+ }
+ xyz[2]+=correction;
+ //
// Electron track time (for pileup simulation)
xyz[4] = tpcHit->Time()/fTPCParam->GetTSample();
// row 0 - cross talk from the innermost row
Float_t dx = fTPCParam->Transform2to2NearestWire(xyz,index);
xyz[1]+=dx*(fTPCParam->GetOmegaTau());
}
- //add nonisochronity (not implemented yet)
+ //add nonisochronity (not implemented yet)
+
+
}
ClassImp(AliTPChit)
// else
// AliDebug(1,"fHitType&2 Failed (can not find branch)");
// }
- //set address to TREETR
-
- TTree *treeTR = TreeTR();
- if (treeTR && fTrackReferences) {
- branch = treeTR->GetBranch(GetName());
- if (branch) branch->SetAddress(&fTrackReferences);
- }
-
}
void AliTPC::FinishPrimary()
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff