LVL1::CpmMappingTool Class Reference

CPM crate/module/channel to eta/phi/layer mappings. More...

#include <CpmMappingTool.h>

Inheritance diagram for LVL1::CpmMappingTool:

Collaboration diagram for LVL1::CpmMappingTool:

Public Member Functions
virtual StatusCode	initialize () override
virtual StatusCode	finalize () override
virtual bool	mapping (int crate, int module, int channel, double &eta, double &phi, int &layer) const override
	Return eta, phi and layer mapping for given crate/module/channel.
virtual bool	mapping (double eta, double phi, int layer, int &crate, int &module, int &channel) const override
	Return crate, module and channel mapping for given eta/phi/layer.

Static Private Attributes
static const int	s_crates = 4
static const int	s_modules = 14
static const int	s_channels = 80
static const int	s_etaBinsPerRow = 4
static const double	s_phiGran = M_PI/32.
static const double	s_etaGran = 0.1

Detailed Description

CPM crate/module/channel to eta/phi/layer mappings.

Layer indicates core/overlap

Source: "ATLAS Level-1 Calorimeter Trigger: Cluster Processor Module, Project Specification" version 2.03

Author

Peter Faulkner

Definition at line 32 of file CpmMappingTool.h.

Member Function Documentation

finalize()

StatusCode LVL1::CpmMappingTool::finalize ( )

overridevirtual

Definition at line 35 of file CpmMappingTool.cxx.

{
 
  return StatusCode::SUCCESS;
}

initialize()

StatusCode LVL1::CpmMappingTool::initialize ( )

overridevirtual

Definition at line 28 of file CpmMappingTool.cxx.

{
  msg(MSG::INFO) << "Initializing " << name() << endmsg;
 
  return StatusCode::SUCCESS;
}

mapping() [1/2]

bool LVL1::CpmMappingTool::mapping ( double eta, double phi, int layer, int & crate, int & module, int & channel ) const

overridevirtual

Return crate, module and channel mapping for given eta/phi/layer.

Definition at line 84 of file CpmMappingTool.cxx.

{
  // Not implemented
  crate   = 0;
  module  = 0;
  channel = 0;
  return false;
}

mapping() [2/2]

bool LVL1::CpmMappingTool::mapping ( int crate, int module, int channel, double & eta, double & phi, int & layer ) const

overridevirtual

Return eta, phi and layer mapping for given crate/module/channel.

Definition at line 43 of file CpmMappingTool.cxx.

{
  if (crate < 0 || crate >= s_crates || module < 1 || module > s_modules ||
      channel < 0 || channel >= s_channels) return false;
 
  // Channels numbered thus:
  //
  //  :    :    :    :    :
  //  |  9 | 11 | 13 | 15 |
  //  |  8 | 10 | 12 | 14 | phi
  //  |  1 |  3 |  5 |  7 |
  //  |  0 |  2 |  4 |  6 |
  //  +----+----+----+----+
  //           eta
 
  const int etaBin = (channel / 2) % s_etaBinsPerRow;
  const int phiBin = ((channel / 2) / s_etaBinsPerRow) * 2
                                    + channel % 2 - 2;  // allow for overlap
 
  // End modules only have one column
  if ((module == 1 && etaBin != s_etaBinsPerRow - 1) ||
      (module == s_modules && etaBin != 0)) return false;
 
  const double twoPi   = 2.*M_PI;
  const double phiBase = M_PI/2. * double(crate);
  phi = phiBase + s_phiGran * (double(phiBin) + 0.5);
  if      (phi < 0.)     phi += twoPi;
  else if (phi >= twoPi) phi -= twoPi;
 
  const double etaBase = s_etaGran * s_etaBinsPerRow *
                                               (module - 1 - s_modules/2);
  eta = etaBase + s_etaGran * (double(etaBin) + 0.5);
 
  // Set layer to 1 for overlap channel, 0 for core
  layer = (phiBin < 0 || phiBin > 15) ? 1 : 0;
  return true;
}

Member Data Documentation

s_channels

const int LVL1::CpmMappingTool::s_channels = 80

staticprivate

Definition at line 52 of file CpmMappingTool.h.

s_crates

const int LVL1::CpmMappingTool::s_crates = 4

staticprivate

Definition at line 50 of file CpmMappingTool.h.

s_etaBinsPerRow

const int LVL1::CpmMappingTool::s_etaBinsPerRow = 4

staticprivate

Definition at line 54 of file CpmMappingTool.h.

s_etaGran

const double LVL1::CpmMappingTool::s_etaGran = 0.1

staticprivate

Definition at line 57 of file CpmMappingTool.h.

s_modules

const int LVL1::CpmMappingTool::s_modules = 14

staticprivate

Definition at line 51 of file CpmMappingTool.h.

s_phiGran

const double LVL1::CpmMappingTool::s_phiGran = M_PI/32.

staticprivate

Definition at line 56 of file CpmMappingTool.h.

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The documentation for this class was generated from the following files:

• CpmMappingTool.h
• CpmMappingTool.cxx