Lut Class Reference

#include <Lut.h>

Public Member Functions
void	DSPtoIEEE32 (short DSPmantissa, short DSPexp, float *f)
int	get_k (int addr) const
int	get_x (int addr) const
void	IEEE32toDSP (float f, short *DSPmantissa, short *DSPexp)
	Lut ()
	Lut (const DTConfigLUTs *conf, int ntc, float SL_shift)
void	setForTestBeam (int station, int board, int traco)
	~Lut ()

Public Attributes
float	m_d
int	m_ST
int	m_wheel
float	m_Xcn

Private Attributes
const DTConfigLUTs *	_conf_luts
float	m_pitch_d_ST

Detailed Description

Class for computing single Traco LUT from given parameters

Author

S. Vanini

Definition at line 31 of file Lut.h.

Constructor & Destructor Documentation

Lut() [1/2]

Lut::Lut ( )

inline

Definition at line 33 of file Lut.h.

{};

Lut() [2/2]

Lut::Lut	(	const DTConfigLUTs *	conf,
		int	ntc,
		float	SL_shift
	)

Definition at line 14 of file Lut.cc.

                                                          : _conf_luts(conf) {
  // set parameters from configuration
  m_d = _conf_luts->D();
  m_ST = _conf_luts->BTIC();
  m_wheel = _conf_luts->Wheel();
 
  // 110208 SV TRACO hardware bug included: Xcn must be corrected because Xcn
  // parameter has been inserted in hardware strings with the shift included,
  // because TRACO doesn't apply shift in positive cases
  float Xcn_corr = _conf_luts->Xcn();
  if (SL_shift > 0) {
    if (Xcn_corr > 0)
      Xcn_corr = Xcn_corr - SL_shift;
    if (Xcn_corr < 0)
      Xcn_corr = Xcn_corr + SL_shift;
  }
 
  m_Xcn = Xcn_corr - (CELL_PITCH * 4.0 * (float)(ntc - 1) * (float)m_wheel);
  m_pitch_d_ST = CELL_PITCH / m_ST;
 
  // std::cout<< "Lut::Lut  ->  m_d " << m_d << " m_ST " << m_ST << " m_wheel "
  // << m_wheel << " m_Xcn " << m_Xcn << " ntc " << ntc << std::endl;
  return;
}

References _conf_luts, DTConfigLUTs::BTIC(), CELL_PITCH, DTConfigLUTs::D(), dqmMemoryStats::float, m_d, m_pitch_d_ST, m_ST, m_wheel, m_Xcn, DTConfigLUTs::Wheel(), and DTConfigLUTs::Xcn().

~Lut()

Lut::~Lut

(

)

Definition at line 39 of file Lut.cc.

{}

Member Function Documentation

DSPtoIEEE32()

void Lut::DSPtoIEEE32	(	short	DSPmantissa,
		short	DSPexp,
		float *	f
	)

get_k()

int Lut::get_k

(

int

addr

)

const

Definition at line 107 of file Lut.cc.

                             {
  // FIX attenzione controlla addr - 511 o -512???
  int i;
  float x;
  i = addr - 512;
  x = (float)i * CELL_PITCH / (SL_D * m_ST);
  x = atanf(x);
  x = x * ANGRESOL;
  if (m_wheel < 0)
    x = -x;
 
  return (int)x;
}

References generateTowerEtThresholdLUT::addr, ANGRESOL, CELL_PITCH, dqmMemoryStats::float, mps_fire::i, m_ST, m_wheel, SL_D, and x.

Referenced by DTTracoChip::calculateAngles().

get_x()

int Lut::get_x

(

int

addr

)

const

Definition at line 121 of file Lut.cc.

                             {
  int i;
  float a, b, x;
 
  if (addr <= 511)  // LUT outer
  {
    i = addr;
    b = m_d + SL_DIFF;
  } else if (addr <= 1023)  // LUT inner
  {
    i = addr - 512;
    b = m_d - SL_DIFF;
  } else  // LUT correlati
  {
    i = addr - 1024;
    b = m_d;
  }
  a = m_Xcn - (m_pitch_d_ST * (float)i * (float)m_wheel);
  x = a / b;
 
  x = atanf(x);
  x = x * POSRESOL;
 
  return (int)x;
}

References a, generateTowerEtThresholdLUT::addr, b, dqmMemoryStats::float, mps_fire::i, m_d, m_pitch_d_ST, m_wheel, m_Xcn, POSRESOL, SL_DIFF, and x.

Referenced by DTTracoChip::calculateAngles().

IEEE32toDSP()

void Lut::IEEE32toDSP	(	float	f,
		short *	DSPmantissa,
		short *	DSPexp
	)

setForTestBeam()

void Lut::setForTestBeam	(	int	station,
		int	board,
		int	traco
	)

Definition at line 41 of file Lut.cc.

                                                          {
  // set parameters from fixed values for MB1 nd MB3 (used in Testbeams 2003
  // 2004)
  int nStat = station;
  int nBoard = board;
  int nTraco = traco;
  float tracoPos[50];
 
  if (nStat == 1) {
    tracoPos[0] = -120.19;
    tracoPos[1] = -103.39;
    tracoPos[2] = -86.59;
    tracoPos[3] = -69.80;
    tracoPos[10] = -52.99;
    tracoPos[11] = -36.19;
    tracoPos[12] = -19.39;
    tracoPos[13] = -2.59;
    tracoPos[20] = 14.20;
    tracoPos[21] = 31.00;
    tracoPos[22] = 47.80;
    tracoPos[23] = 64.60;
    tracoPos[30] = 81.40;
 
    m_d = 431.175;
    m_ST = 31;
    float m_Xc = tracoPos[(nBoard * 10) + nTraco];
    float m_Xn = +39.0;
    m_Xcn = m_Xn - m_Xc;
    // m_stsize = m_CELL_PITCH / m_ST;
    // m_distp2 = 0.5 + ( 2.0 * m_CELL_H * m_ST / m_CELL_PITCH );
  }
 
  if (nStat == 3) {
    tracoPos[0] = -165.45;
    tracoPos[1] = -148.65;
    tracoPos[2] = -131.85;
    tracoPos[3] = -115.05;
    tracoPos[10] = -98.25;
    tracoPos[11] = -81.45;
    tracoPos[12] = -64.65;
    tracoPos[13] = -47.85;
    tracoPos[20] = -31.05;
    tracoPos[21] = -14.25;
    tracoPos[22] = 2.54;
    tracoPos[23] = 19.34;
    tracoPos[30] = 36.14;
    tracoPos[31] = 52.94;
    tracoPos[32] = 69.74;
    tracoPos[33] = 86.54;
    tracoPos[40] = 103.34;
    tracoPos[41] = 120.14;
    tracoPos[42] = 136.94;
    tracoPos[43] = 153.74;
 
    m_d = 512.47;
    m_ST = 31;
    float m_Xc = tracoPos[(nBoard * 10) + nTraco];
    float m_Xn = -21.0;
    m_Xcn = m_Xn - m_Xc;
    // m_stsize = m_CELL_PITCH / m_ST;
    // m_distp2 = 0.5 + ( 2.0 * m_CELL_H * m_ST / m_CELL_PITCH );
  }
 
  return;
}

References m_d, m_ST, m_Xcn, and relativeConstraints::station.

Member Data Documentation

_conf_luts

const DTConfigLUTs* Lut::_conf_luts

private

Definition at line 57 of file Lut.h.

Referenced by Lut().

m_d

float Lut::m_d

Definition at line 49 of file Lut.h.

Referenced by get_x(), Lut(), and setForTestBeam().

m_pitch_d_ST

float Lut::m_pitch_d_ST

private

Definition at line 55 of file Lut.h.

Referenced by get_x(), and Lut().

m_ST

int Lut::m_ST

Definition at line 51 of file Lut.h.

Referenced by get_k(), Lut(), and setForTestBeam().

m_wheel

int Lut::m_wheel

Definition at line 52 of file Lut.h.

Referenced by get_k(), get_x(), and Lut().

m_Xcn

float Lut::m_Xcn

Definition at line 50 of file Lut.h.

Referenced by get_x(), Lut(), and setForTestBeam().