CDCDedxPIDCreatorModule::DEDX Struct Reference

Helper structure for merging dEdx measurements. More...

Collaboration diagram for CDCDedxPIDCreatorModule::DEDX:

Public Member Functions
void	add (const CDCDedxHit &hit_in, int cWire_in, int cLayer_in, double dx_in, double dE_in)
	Add measurement on the same wire.
void	add (const DEDX &dedx)
	Add measurement in the same layer.

Public Attributes
const CDCDedxHit *	hit = nullptr
	hit
int	cWire = -1
	continuous wire number
int	cLayer = -1
	continuous layer number
double	dx = 0
	track length
double	dE = 0
	energy deposit
int	nhits = 0
	number of merged hits
double	dxMax = 0
	longest track length

Detailed Description

Helper structure for merging dEdx measurements.

Definition at line 68 of file CDCDedxPIDCreatorModule.h.

Member Function Documentation

add() [1/2]

void add ( const CDCDedxHit & hit_in, int cWire_in, int cLayer_in, double dx_in, double dE_in )

inline

Add measurement on the same wire.

Parameters

hit_in	wire hit
cWire_in	continuous wire number
cLayer_in	continuous layer number
dx_in	track length
dE_in	energy deposit

Definition at line 85 of file CDCDedxPIDCreatorModule.h.

      {
        if (not hit) {
          hit = &hit_in;
          cWire = cWire_in;
          cLayer = cLayer_in;
          dx = dx_in;
          dE = dE_in;
          nhits = 1;
          dxMax = dx;
        } else if (hit_in.getWireID() == hit->getWireID()) {
          dx += dx_in;
          if (hit->getADCCount() != hit_in.getADCCount()) dE += dE_in; // these hits are not piled-up
          nhits++;
          if (dx_in > dxMax) dxMax = dx_in;
        } else {
          B2ERROR("DEDX helper: measurements on different wires cannot be merged");
        }
      }

add() [2/2]

void add ( const DEDX & dedx )

inline

Add measurement in the same layer.

Parameters

dedx	measurement

Definition at line 109 of file CDCDedxPIDCreatorModule.h.

      {
        if (cLayer < 0) {
          cWire = dedx.cWire;
          cLayer = dedx.cLayer;
          dx = dedx.dx;
          dE = dedx.dE;
          nhits = dedx.nhits;
          dxMax = dedx.dxMax;
        } else if (dedx.cLayer == cLayer) {
          dx += dedx.dx;
          dE += dedx.dE;
          nhits += dedx.nhits;
          if (dedx.dxMax > dxMax) {
            dxMax = dedx.dxMax;
            cWire = dedx.cWire; // wire ID with longest hit
          }
        } else {
          B2ERROR("DEDX helper: measurements in different layers cannot be merged");
        }
      }

Member Data Documentation

cLayer

int cLayer = -1

continuous layer number

Definition at line 71 of file CDCDedxPIDCreatorModule.h.

cWire

int cWire = -1

continuous wire number

Definition at line 70 of file CDCDedxPIDCreatorModule.h.

dE

double dE = 0

energy deposit

Definition at line 73 of file CDCDedxPIDCreatorModule.h.

dx

double dx = 0

track length

Definition at line 72 of file CDCDedxPIDCreatorModule.h.

dxMax

double dxMax = 0

longest track length

Definition at line 75 of file CDCDedxPIDCreatorModule.h.

hit

const CDCDedxHit* hit = nullptr

hit

Definition at line 69 of file CDCDedxPIDCreatorModule.h.

nhits

int nhits = 0

number of merged hits

Definition at line 74 of file CDCDedxPIDCreatorModule.h.

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The documentation for this struct was generated from the following file:

• cdc/modules/CDCDedxPID/include/CDCDedxPIDCreatorModule.h