L1MuGMTEtaLUT Class Reference

#include <L1MuGMTEtaLUT.h>

Public Member Functions
	L1MuGMTEtaLUT ()
	constructor More...
virtual	~L1MuGMTEtaLUT ()
	destructor More...

Static Public Member Functions
static float	eta (int isys, int isISO, int icharge, float eta, float pt)
	look up delta-eta More...

Static Private Member Functions
static int	etabin (float eta, int isys)

Static Private Attributes
static const int	bRPC = 2
static const int	CSC = 1
static const int	DT = 0
static float	etabins [NSYS][NETA+1]
static float	fitparams_eta [NRP][NSYS][NETA][3]
static const int	fRPC = 3
static const unsigned int	NETA = 8
static const unsigned int	NRP = 2
static const int	NSYS = 4

Detailed Description

Description: Look-up table for GMT Eta projection unit

         Caluclates float delta-eta from charge, eta and pT 

         Simple static implementation with parametrization for
         CMS121 geometry

Definition at line 42 of file L1MuGMTEtaLUT.h.

Constructor & Destructor Documentation

L1MuGMTEtaLUT()

L1MuGMTEtaLUT::L1MuGMTEtaLUT

(

)

constructor

Definition at line 44 of file L1MuGMTEtaLUT.cc.

{}

~L1MuGMTEtaLUT()

L1MuGMTEtaLUT::~L1MuGMTEtaLUT ( )

virtual

destructor

Definition at line 49 of file L1MuGMTEtaLUT.cc.

{}

Member Function Documentation

eta()

float L1MuGMTEtaLUT::eta ( int  isys, int  isISO, int  icharge, float  eta, float  pt  )

static

look up delta-eta

Definition at line 68 of file L1MuGMTEtaLUT.cc.

References a, b, bRPC, c, CSC, DT, etabin(), fitparams_eta, fRPC, LEDCalibrationChannels::ieta, and DiDispStaMuonMonitor_cfi::pt.

Referenced by Particle.Particle::__str__(), etabin(), Jet.Jet::jetID(), Jet.Jet::puJetId(), and L1MuGMTMIAUEtaProLUT::TheLookupFunction().

                                                                              {
  int ieta = etabin((float)fabs(eta), isys);

  if ((isys == DT || isys == bRPC) && pt < 4.)
    pt = 4.;  // cut off
  if ((isys == CSC || isys == fRPC) && pt < 3.)
    pt = 3.;

  float a = fitparams_eta[isISO][isys][ieta][0];
  float b = fitparams_eta[isISO][isys][ieta][1];
  float c = fitparams_eta[isISO][isys][ieta][2];

  float deta = a + b / pt + c / (pt * pt);

  float neweta;
  if (eta > 0)
    neweta = eta - deta;
  else
    neweta = eta + deta;

  return neweta;
}

etabin()

int L1MuGMTEtaLUT::etabin ( float  eta, int  isys  )

staticprivate

Definition at line 55 of file L1MuGMTEtaLUT.cc.

References eta(), etabins, mps_fire::i, createfilelist::int, and NETA.

Referenced by eta().

                                             {
  int i;
  for (i = 0; i < (int)NETA; i++)
    if (eta >= etabins[isys][i] && eta < etabins[isys][i + 1])
      break;
  if (i >= (int)NETA)
    edm::LogWarning("LUTProblem") << "L1MuGMTEtaLUT::etabin(): could not assign eta bin ";
  return i;
}

Member Data Documentation

bRPC

const int L1MuGMTEtaLUT::bRPC = 2

staticprivate

Definition at line 60 of file L1MuGMTEtaLUT.h.

Referenced by eta().

CSC

const int L1MuGMTEtaLUT::CSC = 1

staticprivate

Definition at line 59 of file L1MuGMTEtaLUT.h.

Referenced by eta().

DT

const int L1MuGMTEtaLUT::DT = 0

staticprivate

Definition at line 58 of file L1MuGMTEtaLUT.h.

Referenced by eta().

etabins

float L1MuGMTEtaLUT::etabins

staticprivate

Initial value:

= {
    {0.00, 0.22, 0.27, 0.58, 0.77, 0.87, 0.92, 1.24, 1.35 },    
    {0.00, 1.06, 1.26, 1.46, 1.66, 1.86, 2.06, 2.26, 2.46},             
    {0.00, 0.06, 0.25, 0.41, 0.54, 0.70, 0.83, 0.93, 2.10 },  
    {0.00 , 1.24, 1.36, 1.48, 1.61, 1.73, 1.85, 1.97, 2.10}     
}

Definition at line 70 of file L1MuGMTEtaLUT.h.

Referenced by etabin().

fitparams_eta

float L1MuGMTEtaLUT::fitparams_eta

staticprivate

Definition at line 71 of file L1MuGMTEtaLUT.h.

Referenced by eta().

fRPC

const int L1MuGMTEtaLUT::fRPC = 3

staticprivate

Definition at line 61 of file L1MuGMTEtaLUT.h.

Referenced by eta().

NETA

const unsigned int L1MuGMTEtaLUT::NETA = 8

staticprivate

Definition at line 65 of file L1MuGMTEtaLUT.h.

Referenced by etabin().

NRP

const unsigned int L1MuGMTEtaLUT::NRP = 2

staticprivate

Definition at line 68 of file L1MuGMTEtaLUT.h.

NSYS

const int L1MuGMTEtaLUT::NSYS = 4

staticprivate

Definition at line 57 of file L1MuGMTEtaLUT.h.