Class to calculate the time over threshold. More...

#include <PndMvdCalcTot.h>

Public Member Functions
	PndMvdCalcTot ()
	Default constructor. More...

	PndMvdCalcTot (Double_t tr, Double_t a, Double_t threshold, Double_t clockfrequency)
	Main constructor. More...

	~PndMvdCalcTot ()
	Destructor. More...

void	SetStartOffset ()

Double_t	GetTot (Double_t fcharge)

void	SetParameter (Double_t tr, Double_t a, Double_t threshold)

Double_t	GetPileUpTime (Double_t fcharge)

Detailed Description

Class to calculate the time over threshold.

Author: D.-L.Pohl d.poh.nosp@m.l@fz.nosp@m.-juel.nosp@m.ich..nosp@m.de

This class calculates the time over threshold by using the charge of a pixel/strip. To calculate the TOT a simple capacitor model (integrator) is used. The rising time tr [ns] is assumed ti be constant. This leads to a rising straight line. A constant current unloads the capacitor with a ratio of: a [e/ns]. The distance between the points of intersection between the resulting triangle and the threshold line is the TOT.

q | | /\ a | / \ |—/-------—------------— threshold | / \ ----------------------------— q = 0 (charge) | tr| t[ns] <- TOT ->

Definition at line 32 of file PndMvdCalcTot.h.

Constructor & Destructor Documentation

◆ PndMvdCalcTot() [1/2]

PndMvdCalcTot::PndMvdCalcTot ( )

inline

Default constructor.

Definition at line 35 of file PndMvdCalcTot.h.

References SetStartOffset().

   {
     ftr = 100.;
     fa = 60.;
     fthreshold = 3000;
     fclockfrequency = 50.;
     ftimestep = 1. / fclockfrequency * 1000.;
     SetStartOffset();
     LOG(info) << " <PndMvdCalcTot::PndMvdCalcTot()>: default constructor used!";
   };

◆ PndMvdCalcTot() [2/2]

PndMvdCalcTot::PndMvdCalcTot	(	Double_t	tr,
		Double_t	a,
		Double_t	threshold,
		Double_t	clockfrequency
	)

inline

Main constructor.

Definition at line 47 of file PndMvdCalcTot.h.

References SetStartOffset().

   {
     ftr = tr;
     fa = a;
     fthreshold = threshold;
     fclockfrequency = clockfrequency;
     ftimestep = 1. / fclockfrequency * 1000.;
     SetStartOffset();
   };