ldmx::HgcrocShape Class Reference

HGCROC pulse, same form as the HgcrocEmulator pulse. More...

#include <PulseShape.h>

Public Member Functions
	HgcrocShape (double rate_up, double time_up, double rate_dn, double time_dn, double time_peak)
double	eval (double t) const override
	Evaluate the peak-normalised pulse amplitude at time t [ns] after charge arrival.
Public Member Functions inherited from ldmx::PulseShape

Private Attributes
double	rate_up_
double	time_up_
double	rate_dn_
double	time_dn_
double	time_peak_
double	norm_
	makes eval(0) = 1

Additional Inherited Members
Static Public Member Functions inherited from ldmx::PulseShape
static std::unique_ptr< PulseShape >	make (const std::string &name, double tp, double tp2=0.0)
	Factory: construct a pulse shape by name.

Detailed Description

HGCROC pulse, same form as the HgcrocEmulator pulse.

f(t) = N / ((1 + exp(ru·(t − tu + tp))) · (1 + exp(rd·(t − td + tp))))

N normalises f(0) = 1, so t is relative to the emulator hit time. Not zero for t < 0.

Definition at line 122 of file PulseShape.h.

Constructor & Destructor Documentation

HgcrocShape()

ldmx::HgcrocShape::HgcrocShape	(	double	rate_up,
		double	time_up,
		double	rate_dn,
		double	time_dn,
		double	time_peak )

Definition at line 55 of file PulseShape.cxx.

    : rate_up_(rate_up),
      time_up_(time_up),
      rate_dn_(rate_dn),
      time_dn_(time_dn),
      time_peak_(time_peak) {
  norm_ = (1.0 + std::exp(rate_up_ * (time_peak_ - time_up_))) *
          (1.0 + std::exp(rate_dn_ * (time_peak_ - time_dn_)));
}

Member Function Documentation

eval()

double ldmx::HgcrocShape::eval ( double t ) const

overridevirtual

Evaluate the peak-normalised pulse amplitude at time t [ns] after charge arrival.

Returns 0 for t < 0.

Implements ldmx::PulseShape.

Definition at line 66 of file PulseShape.cxx.

                                       {
  return norm_ / ((1.0 + std::exp(rate_up_ * (t - time_up_ + time_peak_))) *
                  (1.0 + std::exp(rate_dn_ * (t - time_dn_ + time_peak_))));
}

References norm_.

Member Data Documentation

norm_

double ldmx::HgcrocShape::norm_

private

makes eval(0) = 1

Definition at line 131 of file PulseShape.h.

Referenced by eval().

rate_dn_

double ldmx::HgcrocShape::rate_dn_

private

Definition at line 130 of file PulseShape.h.

rate_up_

double ldmx::HgcrocShape::rate_up_

private

Definition at line 130 of file PulseShape.h.

time_dn_

double ldmx::HgcrocShape::time_dn_

private

Definition at line 130 of file PulseShape.h.

time_peak_

double ldmx::HgcrocShape::time_peak_

private

Definition at line 130 of file PulseShape.h.

time_up_

double ldmx::HgcrocShape::time_up_

private

Definition at line 130 of file PulseShape.h.

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

• Tools/include/Tools/PulseShape.h
• Tools/src/Tools/PulseShape.cxx