JDETECTOR::JCLBDefaultSimulator Class Reference

Default CLB simulation. More...

#include <JCLBDefaultSimulator.hh>

Inheritance diagram for JDETECTOR::JCLBDefaultSimulator:

Classes
class	JStateMachine
	Auxiliary class to mimic hit ordering effects due to state machine inside CLB. More...
class	JTDC
	Implementation of non-linearity of TDC. More...

Public Member Functions
	JCLBDefaultSimulator (const JDAQHit::JTDC_t Tmax=0)
	Constructor. More...
virtual void	processData (const JCLBInput &input, JDAQFrame &output) const
	Process data. More...

Static Public Member Functions
static JTOT_t	getMaximalToT ()
	Get maximal pulse length of time-over-threshold measurement. More...
static double	getMinimalToT ()
	Get minimal pulse length of time-over-threshold measurement. More...

Protected Types
typedef JDAQHit::JPMT_t	JPMT_t
typedef JDAQHit::JTDC_t	JTDC_t
typedef JDAQHit::JTOT_t	JTOT_t

Private Attributes
JLANG::JSinglePointer< JTDC >	TDC
JLANG::JSinglePointer< JStateMachine >	state_machine
std::vector< JDAQHit >	buffer

Detailed Description

Default CLB simulation.

This class provides for the implementation of the conversion of a time-over-threshold pulse to a so-called hit.
A hit consists of:

• PMT readout channel;
• time stamp of the leading edge of the time-over-threshold pulse;
• length of the time-over-threshold pulse;

The time stamping and pulse length determination is done by a TDC which is integrated inside the FPGA. The observed non-linearity of the TDC is also implemented in this class.

Although the hits from the same PMT are striclty time sorted, hits from different PMTs will be reordered due to the occupancy of the buffers inside the FPGA. This reordering is implemented in the nested class JStateMachine.

Definition at line 139 of file JCLBDefaultSimulator.hh.

Member Typedef Documentation

JPMT_t

typedef JDAQHit::JPMT_t JDETECTOR::JCLBDefaultSimulatorInterface::JPMT_t

protectedinherited

Definition at line 45 of file JCLBDefaultSimulatorInterface.hh.

JTDC_t

typedef JDAQHit::JTDC_t JDETECTOR::JCLBDefaultSimulatorInterface::JTDC_t

protectedinherited

Definition at line 46 of file JCLBDefaultSimulatorInterface.hh.

JTOT_t

typedef JDAQHit::JTOT_t JDETECTOR::JCLBDefaultSimulatorInterface::JTOT_t

protectedinherited

Definition at line 47 of file JCLBDefaultSimulatorInterface.hh.

Constructor & Destructor Documentation

JCLBDefaultSimulator()

JDETECTOR::JCLBDefaultSimulator::JCLBDefaultSimulator ( const JDAQHit::JTDC_t  Tmax = 0 )

inline

Constructor.

Parameters

Tmax	maximal time difference for swap [ns]

Definition at line 228 of file JCLBDefaultSimulator.hh.

                                                       : 
      JCLBDefaultSimulatorInterface(new JTDC(), 
                                    new JStateMachine(Tmax))
    {}

Member Function Documentation

processData()

virtual void JDETECTOR::JCLBDefaultSimulatorInterface::processData ( const JCLBInput &  input, JDAQFrame &  output  ) const

inlinevirtualinherited

Process data.

Parameters

input	PMT data
output	CLB data

Implements JDETECTOR::JCLBSimulator.

Definition at line 126 of file JCLBDefaultSimulatorInterface.hh.

    {      
      using namespace std;
 
 
      const JTDC_t TMIN = 0;                   // [ns]
      const JTDC_t TMAX = (JTDC_t) getRTS();   // [ns]
 
      buffer.clear();
 
 
      for (JPMT_t pmt = 0; pmt != (JPMT_t) input.size(); ++pmt) {
 
 
        const JPMTData<JPMTPulse>& in = input[pmt];
 
 
        // TDC
 
        JPMTData<JPMTPulse>::const_iterator hit = in.begin(); 
 
        for ( ; hit != in.end() && hit->t_ns < TMIN; ++hit) {}
 
        for ( ; hit != in.end() && hit->t_ns < TMAX; ++hit) {
 
          double t1  = hit->t_ns;
          double tot = hit->tot_ns;
 
          // generate multiple hits if time-over-threshold exceeds dynamic range
          
          while (tot > JDAQHit::getMaximalToT()) {
            
            buffer.push_back(TDC->makeHit(pmt, t1, JDAQHit::getMaximalToT()));
            
            t1  += JDAQHit::getMaximalToT();
            tot -= JDAQHit::getMaximalToT();
          }
          
          if (tot > getMinimalToT()) {
            buffer.push_back(TDC->makeHit(pmt, t1, (JTOT_t) (tot + 0.5)));
          }
        }
      }
 
 
      if (buffer.size() > 1) {
 
        // process data through state machine
 
        sort(buffer.begin(), buffer.end());
 
        for (std::vector<JDAQHit>::iterator q = buffer.begin(), p = q++; q != buffer.end(); ++p, ++q) {
 
          if (state_machine->maybeSwapped(*p,*q)) {
            iter_swap(p,q);
          }
        }
      }
 
 
      output.add(buffer.size(), buffer.data());
    }

getMaximalToT()

static JTOT_t JDETECTOR::JCLBDefaultSimulatorInterface::getMaximalToT ( )

inlinestaticinherited

Get maximal pulse length of time-over-threshold measurement.

Returns

TDC value [ns]

Definition at line 196 of file JCLBDefaultSimulatorInterface.hh.

    {
      return 0xFE;
    }

getMinimalToT()

static double JDETECTOR::JCLBDefaultSimulatorInterface::getMinimalToT ( )

inlinestaticinherited

Get minimal pulse length of time-over-threshold measurement.

Returns

TDC value [ns]

Definition at line 207 of file JCLBDefaultSimulatorInterface.hh.

    {
      return 0.5;
    }

Member Data Documentation

TDC

JLANG::JSinglePointer<JTDC> JDETECTOR::JCLBDefaultSimulatorInterface::TDC

privateinherited

Definition at line 213 of file JCLBDefaultSimulatorInterface.hh.

state_machine

JLANG::JSinglePointer<JStateMachine> JDETECTOR::JCLBDefaultSimulatorInterface::state_machine

privateinherited

Definition at line 214 of file JCLBDefaultSimulatorInterface.hh.

buffer

std::vector<JDAQHit> JDETECTOR::JCLBDefaultSimulatorInterface::buffer

mutableprivateinherited

Definition at line 215 of file JCLBDefaultSimulatorInterface.hh.

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

• JCLBDefaultSimulator.hh