--- /dev/null
+/**************************************************************************
+ * 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. *
+ **************************************************************************/
+
+//_________________________________________________________________________
+// Manager class for PHOS version SUBATECH
+//*-- Author : Odd Harald Oddland & Gines Martinez Feb-2000
+// The main goal of this version of AliPHOS is to calculted the
+// induced charged in the PIN diode, taking into account light
+// tracking in the PbWO4 crystal, induced signal in the
+// PIN due to MIPS particle and electronic noise.
+// In this respect, this class derived from AliPHOSv0 and
+// only the StepManager function has been "surcharged"
+//////////////////////////////////////////////////////////////////////////////
+
+// --- ROOT system ---
+#include "TRandom.h"
+
+// --- Standard library ---
+
+#include <cstdio>
+#include <cstring>
+#include <cstdlib>
+#include <strstream>
+#include <cassert>
+
+// --- AliRoot header files ---
+
+#include "AliPHOSv1.h"
+#include "AliPHOSHit.h"
+#include "AliPHOSDigit.h"
+#include "AliRun.h"
+#include "AliConst.h"
+
+ClassImp(AliPHOSv1)
+
+//____________________________________________________________________________
+ AliPHOSv1::AliPHOSv1() :
+ AliPHOSv0()
+{
+}
+
+//____________________________________________________________________________
+AliPHOSv1::AliPHOSv1(const char *name, const char *title):
+ AliPHOSv0(name,title)
+{
+ fLightYieldMean = 700000. ;
+ fIntrinsicPINEfficiency = 0.1875 ;
+ fLightYieldAttenuation = 0.0045 ;
+ fRecalibrationFactor = 6.2 / fLightYieldMean ;
+}
+//____________________________________________________________________________
+AliPHOSv1::AliPHOSv1(AliPHOSReconstructioner * Reconstructioner, const char *name, const char *title):
+ AliPHOSv0(Reconstructioner,name,title)
+{
+ fLightYieldMean = 700000.;
+ fIntrinsicPINEfficiency = 0.1875 ;
+ fLightYieldAttenuation = 0.0045 ;
+ fRecalibrationFactor = 6.2 / fLightYieldMean ;
+}
+
+//____________________________________________________________________________
+AliPHOSv1::~AliPHOSv1()
+{
+
+}
+
+//____________________________________________________________________________
+
+
+
+
+
+
+//____________________________________________________________________________
+void AliPHOSv1::StepManager(void)
+{
+ Int_t relid[4] ; // (box, layer, row, column) indices
+ Float_t xyze[4] ; // position wrt MRS and energy deposited
+ TLorentzVector pos ;
+ Int_t copy;
+ Float_t lightyield ; // Light Yield per GeV
+ Float_t nElectrons ; // Number of electrons in the PIN diode
+ TString name = fGeom->GetName() ;
+ Float_t global[3] ;
+ Float_t local[3] ;
+ Float_t lostenergy ;
+
+ if ( name == "GPS2" ) { // the CPV is a PPSD
+ if( gMC->CurrentVolID(copy) == gMC->VolId("GCEL") )
+ // if( strcmp ( gMC->CurrentVolName(), "GCEL" ) == 0 ) // We are inside a gas cell
+ {
+ gMC->TrackPosition(pos) ;
+ xyze[0] = pos[0] ;
+ xyze[1] = pos[1] ;
+ xyze[2] = pos[2] ;
+ xyze[3] = gMC->Edep() ;
+
+
+ if ( xyze[3] != 0 ) { // there is deposited energy
+ gMC->CurrentVolOffID(5, relid[0]) ; // get the PHOS Module number
+ gMC->CurrentVolOffID(3, relid[1]) ; // get the Micromegas Module number
+ // 1-> Geom->GetNumberOfModulesPhi() * fGeom->GetNumberOfModulesZ() upper
+ // > fGeom->GetNumberOfModulesPhi() * fGeom->GetNumberOfModulesZ() lower
+ gMC->CurrentVolOffID(1, relid[2]) ; // get the row number of the cell
+ gMC->CurrentVolID(relid[3]) ; // get the column number
+
+ // get the absolute Id number
+
+ Int_t absid ;
+ fGeom->RelToAbsNumbering(relid,absid) ;
+
+
+ AddHit(gAlice->CurrentTrack(), absid, xyze );
+
+ } // there is deposited energy
+ } // We are inside the gas of the CPV
+ } // GPS2 configuration
+
+ if(gMC->CurrentVolID(copy) == gMC->VolId("PXTL") )
+ // if( strcmp ( gMC->CurrentVolName(), "PXTL" ) == 0 ) { // We are inside a PWO crystal
+ {
+ gMC->TrackPosition(pos) ;
+ xyze[0] = pos[0] ;
+ xyze[1] = pos[1] ;
+ xyze[2] = pos[2] ;
+ lostenergy = gMC->Edep() ;
+
+ global[0] = pos[0] ;
+ global[1] = pos[1] ;
+ global[2] = pos[2] ;
+
+ if ( xyze[3] != 0 ) {
+ gMC->CurrentVolOffID(10, relid[0]) ; // get the PHOS module number ;
+ relid[1] = 0 ; // means PW04
+ gMC->CurrentVolOffID(4, relid[2]) ; // get the row number inside the module
+ gMC->CurrentVolOffID(3, relid[3]) ; // get the cell number inside the module
+
+ // get the absolute Id number
+
+ Int_t absid ;
+ fGeom->RelToAbsNumbering(relid,absid) ;
+ gMC->Gmtod(global, local, 1) ;
+
+ // calculating number of electrons in the PIN diode asociated to this hit
+ lightyield = gRandom->Poisson(fLightYieldMean) ;
+ nElectrons = lostenergy * lightyield * fIntrinsicPINEfficiency *
+ exp(-fLightYieldAttenuation * (local[1]+fGeom->GetCrystalSize(1)/2.0 ) ) ;
+
+ xyze[3] = nElectrons * fRecalibrationFactor ;
+ // add current hit to the hit list
+ AddHit(gAlice->CurrentTrack(), absid, xyze);
+
+ } // there is deposited energy
+ } // we are inside a PHOS Xtal
+}
+
--- /dev/null
+#ifndef ALIPHOSV1_H
+#define ALIPHOSV1_H
+/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * See cxx source for full Copyright notice */
+
+////////////////////////////////////////////////
+// Manager class for PHOS //
+// Version SUBATECH
+// Author : Odd Harald Oddland &
+// Gines Martinez Feb-2000
+// The main goal of this version of AliPHOS is to calculted the
+// induced charged in the PIN diode, taking into account light
+// tracking in the PbWO4 crystal, induced signal in the
+// PIN due to MIPS particle and electronic noise.
+// In this respect, this class derived from AliPHOSv0 and
+// only the StepManager function has been "surcharged"
+////////////////////////////////////////////////////////////////////
+
+// --- ROOT system ---
+
+
+// --- AliRoot header files ---
+#include "AliPHOSv0.h"
+
+
+class AliPHOSv1 : public AliPHOSv0 {
+
+public:
+
+ AliPHOSv1(void) ;
+ AliPHOSv1(const char *name, const char *title="") ;
+ AliPHOSv1(AliPHOSReconstructioner * Reconstructioner, const char *name, const char *title="") ;
+ virtual ~AliPHOSv1(void) ;
+
+ virtual void StepManager(void) ; // does the tracking through PHOS and a preliminary digitalization
+
+
+private:
+ //
+ // Number of electrons created in the PIN due to light collected in the PbWo4 crystal is calculated using
+ // following formula
+ // NumberOfElectrons = EnergyLost * LightYield * PINEfficiency *
+ // exp (-LightYieldAttenuation * DistanceToPINdiodeFromTheHit) *
+ // RecalibrationFactor ;
+ // LightYield is obtained as a Poissonian distribution with a mean at 700000 photons per GeV fromValery Antonenko
+ // PINEfficiency is 0.1875 from Odd Harald Odland work
+ // k_0 is 0.0045 from Valery Antonenko
+ //
+ Float_t fLightYieldMean ; // Mean of the Poisson distribution which is the mean lightyield in the PbOW4 xtal per GeV
+ Float_t fIntrinsicPINEfficiency ;
+ Float_t fLightYieldAttenuation ;
+ Float_t fRecalibrationFactor ;
+
+ ClassDef(AliPHOSv1,1) // PHOS v1 main class , version subatech with light transportation, MIPS in PIN and electronic noise
+
+};
+
+#endif // AliPHOSV1_H
git://git.uio.no / u / mrichter / AliRoot.git / commitdiff