KFLUT.cxx

Go to the documentation of this file.

/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
// KFLUT
// contains LUT values for KF corrections to MET
//
 
 
#include "L1TopoSimulationUtils/KFLUT.h"
#include <cmath>
 
using namespace std;
 
TCS::KFLUT::KFLUT(){
 
   fillLUT();
}
 
TCS::KFLUT::~KFLUT(){
 
}
 
 
int TCS::KFLUT::getetabin(double eta){
 
   int bin = 0;
   if (eta >= etalimits.back()) return (etalimits.size()-1);
   if (eta < etalimits[0]) return 0;
 
   int sizelim = etalimits.size() - 1 ;
   for (int  j=0;j< sizelim ;j++) {
         if (abs(eta) >= etalimits[j] && abs(eta) < etalimits[j+1]) {
           bin = j;
         }
   }
 
   return bin;
 
 
}
 
 
int TCS::KFLUT::getetbin(unsigned int et){
 
    int binet = 0;
    if (et >= etlimits.back()) return (etlimits.size()-1);
    if (et < etlimits[0]) return 0;
 
    int sizelimet = etlimits.size() - 1 ;
    for (int i=0;i< sizelimet ;i++) {
        if (et >= etlimits[i] && et < etlimits[i+1]) {
           binet = i;
        }
    }
    return binet;
 
 
}
 
 
double TCS::KFLUT::getcorrKF(int iet,int jeta){
 
   return LUTKF.at(iet).at(jeta);
 
 
}
 
void TCS::KFLUT::fillLUT(){
 
    etalimits = {-0.10,0.10,0.30,0.50,0.70,0.90,1.10,1.30,1.50,1.70,1.90,2.10,2.33,2.55,2.80,3.42};
    etlimits = {8,16,32,64,128,1024};
 
    LUTKF.push_back({0.14,0.12,0.12,0.17,0.26,0.3,0.3,0.42,0.38,0.19,0.16,0.15,0.52,0.59,0.62,0.33});
    LUTKF.push_back({0.19,0.17,0.18,0.2,0.27,0.3,0.3,0.43,0.36,0.19,0.16,0.14,0.33,0.35,0.38,0.28});
    LUTKF.push_back({0.13,0.11,0.11,0.13,0.17,0.19,0.18,0.28,0.21,0.11,0.09,0.08,0.12,0.09,0.12,0.17});
    LUTKF.push_back({-0.01,-0.02,-0.02,-0.01,0.02,0.03,0.03,0.12,0.04,-0.04,-0.05,-0.06,-0.03,-0.06,-0.03,0.05});
    LUTKF.push_back({-0.12,-0.12,-0.12,-0.11,-0.08,-0.07,-0.08,-0.01,-0.08,-0.14,-0.14,-0.15,-0.13,-0.15,-0.12,-0.04});
 
    //Correction for rounding when 7 decimal bit applied
    for (auto &vet : LUTKF){
      for (auto &veta : vet){
    veta = std::round(veta*std::pow(2,7))/std::pow(2,7);
      }
    }
}