SCT_Amp Class Reference

Header file for SCT_Amp Class. More...

#include <SCT_Amp.h>

Inheritance diagram for SCT_Amp:

Collaboration diagram for SCT_Amp:

Public Member Functions
	SCT_Amp (const std::string &type, const std::string &name, const IInterface *parent)
	constructor
virtual	~SCT_Amp ()=default
	Destructor.
virtual StatusCode	initialize () override
	AlgTool initialize.
virtual StatusCode	finalize () override
	AlgTool finalize.
virtual float	response (const list_t &Charges, const float timeOverThreshold) const override
	main purpose: CR-RC^3 response to a list of charges with times
virtual void	response (const list_t &Charges, const float timeOverThreshold, std::vector< float > &resp) const override
virtual float	crosstalk (const list_t &Charges, const float timeOverThreshold) const override
	Neighbour strip cross talk response strip to a list of charges with times.
virtual void	crosstalk (const list_t &Charges, const float timeOverThreshold, std::vector< float > &resp) const override

Private Attributes
FloatProperty	m_PeakTime {this, "PeakTime", 21., "Front End Electronics peaking time"}
	signal peak time
FloatProperty	m_CrossFactor2sides {this, "CrossFactor2sides", 0.1, "Loss of charge to neighbour strip constant"}
	Cross factor 2 side.
FloatProperty	m_CrossFactorBack {this, "CrossFactorBack", 0.07, "Loss of charge to back plane constant"}
	cross factor
FloatProperty	m_tmin {this, "Tmin", -25.0}
FloatProperty	m_tmax {this, "Tmax", 150.0}
FloatProperty	m_dt {this, "deltaT", 1.0}
float	m_NormConstCentral {0.}
	Normalisation factor for the signal response.
float	m_NormConstNeigh {0.}
	Normalisation factor for the neighbour strip signal response.

Detailed Description

Header file for SCT_Amp Class.

A class to model an SCT amplifier and shaper. Gives a CRRC response to a list of charges with times. Also calculates average input and output for diagnostic purposes. Questions/comments to Szymo.nosp@m.n.Ga.nosp@m.domsk.nosp@m.i@ce.nosp@m.rn.ch Name changed from SCTpreamp (misleading) on 09.05.01.

Author

Szymo.nosp@m.n.Ga.nosp@m.domsk.nosp@m.i@ce.nosp@m.rn.ch, Awati.nosp@m.f.Be.nosp@m.lymam.nosp@m.@cer.nosp@m.n.ch, David.nosp@m.e.Co.nosp@m.stanz.nosp@m.o@ce.nosp@m.rn.ch, tgcor.nosp@m.nel@.nosp@m.nikhe.nosp@m.f.nl, Grant.nosp@m..Gor.nosp@m.fine@.nosp@m.cern.nosp@m..ch, Paul..nosp@m.Bell.nosp@m.@cern.nosp@m..ch, Jorge.nosp@m.n.Da.nosp@m.lmau@.nosp@m.cern.nosp@m..ch, 23/08/2007 - Kondo.nosp@m..Gna.nosp@m.nvo@c.nosp@m.ern..nosp@m.ch

• Conversion of the SCT_Amp code AlgTool

Definition at line 27 of file SCT_Amp.h.

Constructor & Destructor Documentation

SCT_Amp()

SCT_Amp::SCT_Amp	(	const std::string &	type,
		const std::string &	name,
		const IInterface *	parent )

constructor

Definition at line 17 of file SCT_Amp.cxx.

  : base_class(type, name, parent)
{
}

~SCT_Amp()

virtual SCT_Amp::~SCT_Amp ( )

virtualdefault

Destructor.

Member Function Documentation

crosstalk() [1/2]

float SCT_Amp::crosstalk ( const list_t & Charges, const float timeOverThreshold ) const

overridevirtual

Neighbour strip cross talk response strip to a list of charges with times.

Definition at line 109 of file SCT_Amp.cxx.

                                                                                 {
  float resp{0};
  float tp{static_cast<float>(m_PeakTime/3.0)}; // for CR-RC^3
  for (const SiCharge& charge: Charges) {
    float ch{static_cast<float>(charge.charge())};
    float tC{static_cast<float>(timeOfThreshold - charge.time())};
    if (tC > 0.0) {
      tC/=tp; //to avoid doing it four times
      resp += ch*tC*tC*std::exp(-tC)*(3.0-tC); //faster than pow
    }
  }
  return resp*m_NormConstNeigh;
}

crosstalk() [2/2]

void SCT_Amp::crosstalk ( const list_t & Charges, const float timeOverThreshold, std::vector< float > & resp ) const

overridevirtual

Definition at line 123 of file SCT_Amp.cxx.

                                                                                                            {
  short bin_max{static_cast<short>(response.size())};
  std::fill(response.begin(), response.end(), 0.0);
  float tp{static_cast<float>(m_PeakTime/3.0)}; // for CR-RC^3
  for (const SiCharge& charge: Charges) {
    float ch{static_cast<float>(charge.charge())};
    float ch_time{static_cast<float>(charge.time())};
    short bin_end{static_cast<short>(bin_max-1)};
    for (short bin{-1}; bin<bin_end; ++bin) {
      float bin_timeOfThreshold{timeOfThreshold + bin*25}; // 25, fix me
      float tC{bin_timeOfThreshold - ch_time};
      if (tC > 0.0) {
        tC/=tp; //to avoid doing it four times
        response[bin+1] += ch*tC*tC*std::exp(-tC)*(3.0-tC); //faster than pow
      }
    }
  }
  for (short bin{0}; bin<bin_max; ++bin) response[bin] = response[bin]*m_NormConstNeigh;
}

finalize()

StatusCode SCT_Amp::finalize ( )

overridevirtual

AlgTool finalize.

Definition at line 59 of file SCT_Amp.cxx.

                             {
  StatusCode sc{AthAlgTool::finalize()};
  if (sc.isFailure()) {
    ATH_MSG_FATAL("SCT_Amp::finalize() failed");
    return sc;
  }
  ATH_MSG_DEBUG("SCT_Amp::finalize()");
  return sc;
}

initialize()

StatusCode SCT_Amp::initialize ( )

overridevirtual

AlgTool initialize.

CHLEP Units

Definition at line 25 of file SCT_Amp.cxx.

                               {
  
  StatusCode sc{AthAlgTool::initialize()};
  if (sc.isFailure()) {
    ATH_MSG_FATAL("SCT_Amp::initialize() failed");
    return sc;
  }
  ATH_MSG_DEBUG("SCT_Amp::initialize()");

  m_PeakTime.setValue(m_PeakTime.value() * CLHEP::ns);
  m_dt.setValue(m_dt.value() * CLHEP::ns);
  m_tmin.setValue(m_tmin.value() * CLHEP::ns);
  m_tmax.setValue(m_tmax.value() * CLHEP::ns);
 
  m_NormConstCentral = (exp(3.0)/27.0)*(1.0-m_CrossFactor2sides)*(1.0-m_CrossFactorBack);
  m_NormConstNeigh = exp(3.0-sqrt(3.0))/(6*(2.0*sqrt(3.0)-3.0));
  m_NormConstNeigh *= (m_CrossFactor2sides/2.0)*(1.0-m_CrossFactorBack);
 
#ifdef SCT_DIG_DEBUG
  ATH_MSG_INFO("\tAmp created, PeakTime = " << m_PeakTime);
  ATH_MSG_INFO("\tResponse will be CR-RC^3 with tp = " << m_PeakTime/3.0);
  ATH_MSG_INFO("\tCoupling to both neighbours = " << m_CrossFactor2sides);
  ATH_MSG_INFO("\tCoupling to backplane = " << m_CrossFactorBack);
  ATH_MSG_INFO("\tNormalization for central " << m_NormConstCentral);
  ATH_MSG_INFO("\tNormalization for neighbour " << m_NormConstNeigh);
#endif
 
  return sc;
}

response() [1/2]

float SCT_Amp::response ( const list_t & Charges, const float timeOverThreshold ) const

overridevirtual

main purpose: CR-RC^3 response to a list of charges with times

Definition at line 72 of file SCT_Amp.cxx.

                                                                                {
  float resp{0.0};
  float tp{static_cast<float>(m_PeakTime/3.0)}; // for CR-RC^3
  for (const SiCharge& charge: Charges) {
    float ch{static_cast<float>(charge.charge())};
    float tC{static_cast<float>(timeOfThreshold - charge.time())};
    if (tC > 0.0) {
      tC/=tp; //to avoid doing it four times
      resp += ch*tC*tC*tC*std::exp(-tC); //faster than pow
    }
  }
  return resp*m_NormConstCentral;
}

response() [2/2]

void SCT_Amp::response ( const list_t & Charges, const float timeOverThreshold, std::vector< float > & resp ) const

overridevirtual

Definition at line 86 of file SCT_Amp.cxx.

                                                                                                           {
  short bin_max{static_cast<short>(response.size())};
  std::fill(response.begin(), response.end(), 0.0);
  float tp{static_cast<float>(m_PeakTime/3.0)}; // for CR-RC^3
  for (const SiCharge& charge: Charges) {
    float ch{static_cast<float>(charge.charge())};
    float ch_time{static_cast<float>(charge.time())};
    short bin_end{static_cast<short>(bin_max-1)};
    for (short bin{-1}; bin<bin_end; ++bin) {
      float bin_timeOfThreshold{timeOfThreshold + bin*25};//25, fix me
      float tC{bin_timeOfThreshold - ch_time};
      if (tC > 0.0) {
        tC/=tp; //to avoid doing it four times
        response[bin+1] += ch*tC*tC*tC*std::exp(-tC); //faster than pow
      }
    }
  }
  for (short bin{0}; bin<bin_max; ++bin) response[bin] = response[bin]*m_NormConstCentral;
}

Member Data Documentation

m_CrossFactor2sides

FloatProperty SCT_Amp::m_CrossFactor2sides {this, "CrossFactor2sides", 0.1, "Loss of charge to neighbour strip constant"}

private

Cross factor 2 side.

Definition at line 53 of file SCT_Amp.h.

{this, "CrossFactor2sides", 0.1, "Loss of charge to neighbour strip constant"};

m_CrossFactorBack

FloatProperty SCT_Amp::m_CrossFactorBack {this, "CrossFactorBack", 0.07, "Loss of charge to back plane constant"}

private

cross factor

Definition at line 56 of file SCT_Amp.h.

{this, "CrossFactorBack", 0.07, "Loss of charge to back plane constant"};

m_dt

FloatProperty SCT_Amp::m_dt {this, "deltaT", 1.0}

private

Definition at line 60 of file SCT_Amp.h.

{this, "deltaT", 1.0};

m_NormConstCentral

float SCT_Amp::m_NormConstCentral {0.}

private

Normalisation factor for the signal response.

Definition at line 63 of file SCT_Amp.h.

{0.};

m_NormConstNeigh

float SCT_Amp::m_NormConstNeigh {0.}

private

Normalisation factor for the neighbour strip signal response.

Definition at line 66 of file SCT_Amp.h.

{0.};

m_PeakTime

FloatProperty SCT_Amp::m_PeakTime {this, "PeakTime", 21., "Front End Electronics peaking time"}

private

signal peak time

Definition at line 50 of file SCT_Amp.h.

{this, "PeakTime", 21., "Front End Electronics peaking time"};

m_tmax

FloatProperty SCT_Amp::m_tmax {this, "Tmax", 150.0}

private

Definition at line 59 of file SCT_Amp.h.

{this, "Tmax", 150.0};

m_tmin

FloatProperty SCT_Amp::m_tmin {this, "Tmin", -25.0}

private

Definition at line 58 of file SCT_Amp.h.

{this, "Tmin", -25.0};

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

• SCT_Amp.h
• SCT_Amp.cxx