/**************************************************************************
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* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
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* *
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* Author: The ALICE Off-line Project. *
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* Contributors are mentioned in the code where appropriate. *
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* *
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* Permission to use, copy, modify and distribute this software and its *
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* documentation strictly for non-commercial purposes is hereby granted *
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* without fee, provided that the above copyright notice appears in all *
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* copies and that both the copyright notice and this permission notice *
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* appear in the supporting documentation. The authors make no claims *
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* about the suitability of this software for any purpose. It is *
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* provided "as is" without express or implied warranty. *
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**************************************************************************/
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/* $Id$*/
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//_________________________________________________________________________
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// Geometry class for EMCAL : singleton
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// EMCAL consists of layers of scintillator and lead
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// Places the the Barrel Geometry of The EMCAL at Midrapidity
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// between 0 and 120 degrees of Phi and
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// -0.7 to 0.7 in eta
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// Number of Modules and Layers may be controlled by
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// the name of the instance defined
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// EMCALArch2x has more modules along both phi and eta
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// EMCALArchxa has less Layers in the Radial Direction
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//*-- Author: Sahal Yacoob (LBL / UCT)
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// and : Yves Schutz (SUBATECH)
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// and : Jennifer Klay (LBL)
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// --- ROOT system ---
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// --- Standard library ---
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-
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-#include <Riostream.h>
#include <stdlib.h>
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// --- AliRoot header files ---
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#include <TMath.h>
// -- ALICE Headers.
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#include "AliConst.h"
// --- EMCAL headers
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#include "AliEMCALGeometry.h"
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ClassImp(AliEMCALGeometry);
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AliEMCALGeometry *AliEMCALGeometry::fgGeom = 0;
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Bool_t AliEMCALGeometry::fgInit = kFALSE;
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//______________________________________________________________________
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AliEMCALGeometry::~AliEMCALGeometry(void){
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// dtor
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}
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//______________________________________________________________________
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void AliEMCALGeometry::Init(void){
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// Initializes the EMCAL parameters
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fgInit = kFALSE; // Assume failer untill proven otherwise.
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TString name(GetName()) ;
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if( name != "EMCALArch1a" &&
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name != "EMCALArch1b" &&
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name != "EMCALArch2a" &&
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name != "EMCALArch2b" ){
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- cerr << "ERROR: " << ClassName() << "::Init -> " << name.Data()
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- << " is not a known geometry (choose among EMCALArch1a, EMCALArch1b, EMCALArch2a and EMCALArch2b)"
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- << endl ;
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- abort() ;
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+ Fatal("Init", "%s is not a known geometry (choose among EMCALArch1a, EMCALArch1b, EMCALArch2a and EMCALArch2b)", name.Data()) ;
} // end if
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//
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if ( name == "EMCALArch1a" ||
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name == "EMCALArch1b" ) {
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fNZ = 96;
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fNPhi = 144;
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} // end if
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if ( name == "EMCALArch2a" ||
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name, "EMCALArch2b" ) {
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fNZ = 112;
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fNPhi = 168;
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} // end if
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if ( name == "EMCALArch1a" ||
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name == "EMCALArch2a" ) {
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fNLayers = 21;
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} // end if
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if ( name == "EMCALArch1b" ||
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name == "EMCALArch2b" ) {
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fNLayers = 25;
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} // end if
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// geometry
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fAirGap = 5.0; // cm, air gap between EMCAL mother volume and
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// active material.
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fAlFrontThick = 3.18; // cm, Thickness of front Al layer
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fPbRadThickness = 0.5; // cm, Thickness of theh Pb radiators.
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fPreShowerSintThick = 0.6; // cm, Thickness of the sintilator for the
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// preshower part of the calorimeter
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fFullShowerSintThick = 0.5; // cm, Thickness of the sintilator for the
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// full shower part of the calorimeter
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fArm1PhiMin = 60.0; // degrees, Starting EMCAL Phi position
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fArm1PhiMax = 180.0; // degrees, Ending EMCAL Phi position
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fArm1EtaMin = -0.7; // pseudorapidity, Starting EMCAL Eta position
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fArm1EtaMax = +0.7; // pseudorapidity, Ending EMCAL Eta position
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fIPDistance = 454.0; // cm, Radial distance to inner surface of EMCAL
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fShellThickness = GetAlFrontThickness() + 2.*GetPreSintThick() +
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(fNLayers-2)*GetFullSintThick()+(fNLayers-1)*GetPbRadThick();
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//below; cm, Z lenght of the EMCAL.
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fZLength = 2.*ZFromEtaR(fIPDistance+fShellThickness,fArm1EtaMax);
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fEnvelop[0] = fIPDistance; // mother volume inner radius
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fEnvelop[1] = fIPDistance + fShellThickness; // mother volume outer r.
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fEnvelop[2] = 1.00001*fZLength; // add some padding for mother volume.
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fGap2Active = 1.0; // cm, Gap between
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fgInit = kTRUE;
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}
//______________________________________________________________________
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AliEMCALGeometry * AliEMCALGeometry::GetInstance(){
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// Returns the pointer of the unique instance
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return static_cast<AliEMCALGeometry *>( fgGeom ) ;
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}
//______________________________________________________________________
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AliEMCALGeometry* AliEMCALGeometry::GetInstance(const Text_t* name,
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const Text_t* title){
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// Returns the pointer of the unique instance
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AliEMCALGeometry * rv = 0;
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if ( fgGeom == 0 ) {
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if ( strcmp(name,"") == 0 ) rv = 0;
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else {
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fgGeom = new AliEMCALGeometry(name, title);
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if ( fgInit ) rv = (AliEMCALGeometry * ) fgGeom;
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else {
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rv = 0;
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delete fgGeom;
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fgGeom = 0;
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} // end if fgInit
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} // end if strcmp(name,"")
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}else{
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if ( strcmp(fgGeom->GetName(), name) != 0 ) {
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- cout << "AliEMCALGeometry <E> : current geometry is "
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- << fgGeom->GetName() << endl
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- << " you cannot call " << name
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- << endl;
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+ TString message("\n") ;
+ message += "current geometry is " ;
+ message += fgGeom->GetName() ;
+ message += "\n you cannot call " ;
+ message += name ;
+ ::Info("GetGeometry", message.Data() ) ;
}else{
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- rv = (AliEMCALGeometry *) fgGeom;
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+ rv = (AliEMCALGeometry *) fgGeom;
} // end if
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} // end if fgGeom
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return rv;
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}
//______________________________________________________________________
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Int_t AliEMCALGeometry::TowerIndex(Int_t ieta,Int_t iphi,Int_t ipre) const {
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// Returns the tower index number from the based on the Z and Phi
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// index numbers. There are 2 times the number of towers to separate
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// out the full towsers from the pre-towsers.
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// Inputs:
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// Int_t ieta // index allong z axis [1-fNZ]
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// Int_t iphi // index allong phi axis [1-fNPhi]
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// Int_t ipre // 0 = Full tower, 1 = Pre-shower tower only. [0,1]
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// Outputs:
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// none.
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// Returned
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// Int_t the absoulute tower index. [1-2*fNZ*fNPhi]
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Int_t index;
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if((ieta<=0 || ieta>GetNEta()) || (iphi<=0 || iphi>GetNPhi()) ||
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(ipre<0 || ipre>1) ){
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- cout << "inputs out of range ieta=" << ieta << " [1-" << GetNEta();
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- cout << "] iphi=" << iphi << " [1-" << GetNPhi() << "] ipre=";
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- cout << ipre << "[0,1]. returning -1" << endl;
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- return -1;
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+ TString message ("\n") ;
+ message += "inputs out of range ieta= " ;
+ message += ieta ;
+ message += " [1-" ;
+ message += GetNEta() ;
+ message += "] iphi= " ;
+ message += iphi ;
+ message += " [1-" ;
+ message += GetNPhi() ;
+ message += "] ipre= " ;
+ message += ipre ;
+ message += "[0,1]. returning -1" ;
+ Warning("TowerIndex", message.Data() ) ;
+ return -1;
} // end if
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index = iphi + GetNPhi()*(ieta-1) + ipre*(GetNPhi()*GetNEta());
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return index;
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}
//______________________________________________________________________
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void AliEMCALGeometry::TowerIndexes(Int_t index,Int_t &ieta,Int_t &iphi,
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Int_t &ipre) const {
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// given the tower index number it returns the based on the Z and Phi
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// index numbers and if it is for the full tower or the pre-tower number.
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// There are 2 times the number of towers to separate
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// out the full towsers from the pre-towsers.
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// Inputs:
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// Int_t index // Tower index number [1-2*fNZ*fNPhi]
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// Outputs:
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// Int_t ieta // index allong z axis [1-fNZ]
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// Int_t iphi // index allong phi axis [1-fNPhi]
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// Int_t ipre // 0 = Full tower, 1 = Pre-shower tower only. [0,1]
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// Returned
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// none.
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Int_t itowers;
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itowers = GetNEta()*GetNPhi();
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if(index<1 || index>2*itowers){
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- cout << "index=" << index <<" is out of range [1-";
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- cout << 2*itowers << "], returning -1 for all." << endl;
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- ieta = -1; iphi = -1; ipre = -1;
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- return ;
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+ TString message("\n") ;
+ message += "index= " ;
+ message += index ;
+ message += " is out of range [1-" ;
+ message += 2*itowers ;
+ message += "], returning -1 for all." ;
+ Warning("TowerIndex", message.Data() ) ;
+ ieta = -1; iphi = -1; ipre = -1;
+ return ;
} // end if
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ipre = 0;
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if(index>itowers){ // pre shower indexs
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ipre = 1;
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index = index - itowers;
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} // end if
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ieta = 1+ (Int_t)((index-1)/GetNPhi());
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iphi = index - GetNPhi()*(ieta-1);
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return;
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}
//______________________________________________________________________
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void AliEMCALGeometry::EtaPhiFromIndex(Int_t index,Float_t &eta,Float_t &phi) const {
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// given the tower index number it returns the based on the eta and phi
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// of the tower.
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// Inputs:
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// Int_t index // Tower index number [1-2*fNZ*fNPhi]
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// Outputs:
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// Float_t eta // eta of center of tower in pseudorapidity
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// Float_t phi // phi of center of tower in degrees
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// Returned
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// none.
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Int_t ieta,iphi,ipre;
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Double_t deta,dphi,phid;
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TowerIndexes(index,ieta,iphi,ipre);
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deta = (GetArm1EtaMax()-GetArm1EtaMin())/((Float_t)GetNEta());
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eta = GetArm1EtaMin() + (((Float_t)ieta)-0.5)*deta;
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dphi = (GetArm1PhiMax() - GetArm1PhiMin())/((Float_t)GetNPhi()); // in degrees.
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phid = GetArm1PhiMin() + dphi*((Float_t)iphi -0.5);//iphi range [1-fNphi].
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phi = phid;
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}
//______________________________________________________________________
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Int_t AliEMCALGeometry::TowerIndexFromEtaPhi(Float_t eta,Float_t phi) const {
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// returns the tower index number based on the eta and phi of the tower.
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// Inputs:
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// Float_t eta // eta of center of tower in pseudorapidity
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// Float_t phi // phi of center of tower in degrees
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// Outputs:
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// none.
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// Returned
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// Int_t index // Tower index number [1-fNZ*fNPhi]
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Int_t ieta,iphi;
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ieta = 1 + (Int_t)(((Float_t)GetNEta())*(eta-GetArm1EtaMin())/
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(GetArm1EtaMax() - GetArm1EtaMin()));
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if(ieta<=0 || ieta>GetNEta()){
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- cout << "TowerIndexFromEtaPhi:";
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- cout << "ieta = "<< ieta << " eta=" << eta << " is outside of EMCAL. etamin=";
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- cout << GetArm1EtaMin() << " to etamax=" << GetArm1EtaMax();
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- cout << " returning -1" << endl;
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- return -1;
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+ TString message("\n") ;
+ message += "ieta = " ;
+ message += ieta ;
+ message += " eta=" ;
+ message += eta ;
+ message += " is outside of EMCAL. etamin=" ;
+ message += GetArm1EtaMin() ;
+ message += " to etamax=" ;
+ message += GetArm1EtaMax();
+ message += " returning -1";
+ Warning("TowerIndexFromEtaPhi", message.Data() ) ;
+ return -1;
} // end if
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iphi = 1 + (Int_t)(((Float_t)GetNPhi())*(phi-GetArm1PhiMin())/
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((Float_t)(GetArm1PhiMax() - GetArm1PhiMin())));
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if(iphi<=0 || iphi>GetNPhi()){
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- cout << "TowerIndexFromEtaPhi:";
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- cout << "iphi=" << iphi << " phi=" << phi << " is outside of EMCAL.";
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- cout << " Phimin=" << GetArm1PhiMin() << " PhiMax=" << GetArm1PhiMax();
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- cout << " returning -1" << endl;
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- return -1;
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+ TString message("\n") ;
+ message += "iphi=" ;
+ message += iphi ;
+ message += "phi= " ;
+ message += phi ;
+ message += " is outside of EMCAL." ;
+ message += " Phimin=" ;
+ message += GetArm1PhiMin() ;
+ message += " PhiMax=" ;
+ message += GetArm1PhiMax() ;
+ message += " returning -1" ;
+ Warning("TowerIndexFromEtaPhi", message.Data() ) ;
+ return -1;
} // end if
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return TowerIndex(ieta,iphi,0);
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}
//______________________________________________________________________
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Int_t AliEMCALGeometry::PreTowerIndexFromEtaPhi(Float_t eta,Float_t phi) const {
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// returns the pretower index number based on the eta and phi of the tower.
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// Inputs:
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// Float_t eta // eta of center of tower in pseudorapidity
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// Float_t phi // phi of center of tower in degrees
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// Outputs:
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// none.
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// Returned
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// Int_t index // PreTower index number [fNZ*fNPhi-2*fNZ*fNPhi]
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return GetNEta()*GetNPhi()+TowerIndexFromEtaPhi(eta,phi);
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}
//______________________________________________________________________
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Bool_t AliEMCALGeometry::AbsToRelNumbering(Int_t AbsId, Int_t *relid) const {
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// Converts the absolute numbering into the following array/
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// relid[0] = EMCAL Arm number 1:1
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// relid[1] = 0 Not in Pre Shower layers
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// = -1 In Pre Shower
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// relid[2] = Row number inside EMCAL
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// relid[3] = Column number inside EMCAL
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// Input:
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// Int_t AbsId // Tower index number [1-2*fNZ*fNPhi]
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// Outputs:
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// Int_t *relid // array of 5. Discribed above.
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Bool_t rv = kTRUE ;
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Int_t ieta=0,iphi=0,ipre=0,index=AbsId;
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TowerIndexes(index,ieta,iphi,ipre);
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relid[0] = 1;
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relid[1] = 0;
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if(ipre==1)
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relid[1] = -1;
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relid[2] = ieta;
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relid[3] = iphi;
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return rv;
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}
//______________________________________________________________________
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void AliEMCALGeometry::PosInAlice(const Int_t *relid,Float_t &theta,
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Float_t &phi) const {
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// Converts the relative numbering into the local EMCAL-module (x, z)
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// coordinates
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Int_t ieta = relid[2]; // offset along x axis
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Int_t iphi = relid[3]; // offset along z axis
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Int_t ipre = relid[1]; // indicates -1 preshower, or 0 full tower.
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Int_t index;
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Float_t eta;
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if(ipre==-1) ipre = 1;
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index = TowerIndex(ieta,iphi,ipre);
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EtaPhiFromIndex(index,eta,phi);
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theta = 180.*(2.0*TMath::ATan(TMath::Exp(-eta)))/TMath::Pi();
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return;
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}
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//______________________________________________________________________
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void AliEMCALGeometry::XYZFromIndex(const Int_t *relid,Float_t &x,Float_t &y, Float_t &z) const {
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// given the tower relative number it returns the X, Y and Z
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// of the tower.
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// Outputs:
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// Float_t x // x of center of tower in cm
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// Float_t y // y of center of tower in cm
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// Float_t z // z of centre of tower in cm
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// Returned
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// none.
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Float_t eta,theta, phi,cyl_radius,kDeg2Rad;
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Int_t ieta = relid[2]; // offset along x axis
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Int_t iphi = relid[3]; // offset along z axis
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Int_t ipre = relid[1]; // indicates -1 preshower, or 0 full tower.
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Int_t index;
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if(ipre==-1) ipre = 1;
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index = TowerIndex(ieta,iphi,ipre);
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EtaPhiFromIndex(index,eta,phi);
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theta = 180.*(2.0*TMath::ATan(TMath::Exp(-eta)))/TMath::Pi();
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kDeg2Rad = TMath::Pi() / static_cast<Double_t>(180) ;
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cyl_radius = GetIPDistance()+ GetAirGap() ;
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x = cyl_radius * TMath::Cos(phi * kDeg2Rad ) ;
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y = cyl_radius * TMath::Cos(phi * kDeg2Rad ) ;
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z = cyl_radius / TMath::Tan(theta * kDeg2Rad ) ;
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return;
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}
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//______________________________________________________________________
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/*
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Boot_t AliEMCALGeometry::AreNeighbours(Int_t index1,Int_t index2) const {
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// Returns kTRUE if the two towers are neighbours or not, including
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// diagonals. Both indexes are required to be either towers or preshower.
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// Inputs:
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// Int_t index1 // index of tower 1
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// Int_t index2 // index of tower 2
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// Outputs:
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// none.
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// Returned
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// Boot_t kTRUE if the towers are neighbours otherwise false.
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Boot_t anb = kFALSE;
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Int_t ieta1 = 0, ieta2 = 0, iphi1 = 0, iphi2 = 0, ipre1 = 0, ipre2 = 0;
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TowerIndexes(index1,ieta1,iphi1,ipre1);
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TowerIndexes(index2,ieta2,iphi2,ipre2);
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if(ipre1!=ipre2) return anb;
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if((ieta1>=ieta2-1 && ieta1<=ieta2+1) && (iphi1>=iphi2-1 &&iphi1<=iphi2+1))
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anb = kTRUE;
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return anb;
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}
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*/
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git://git.uio.no / u / mrichter / AliRoot.git / blobdiff