KLMTimeConversion Class Reference

KLM time conversion. More...

#include <KLMTimeConversion.h>

Inheritance diagram for KLMTimeConversion:

Collaboration diagram for KLMTimeConversion:

Public Member Functions
	KLMTimeConversion ()
	Constructor.
	~KLMTimeConversion ()
	Destructor.
double	getTDCPeriod () const
	Get TDC period.
void	setTDCFrequency (double frequency)
	Set TDC frequency.
void	setTimeOffset (double offset)
	Set time offset. More...
void	setCTimeShift (int shift)
	Set CTIME shift. More...
double	getScintillatorTime (int ctime, int triggerCTime) const
	Get time for scintillator. More...
std::pair< int, double >	getRPCTimes (int ctime, int tdc, int triggerTime) const
	Get coarse and fine times for RPC. More...
double	getTimeSimulation (int tdc, bool scintillator) const
	Get time for simulation. More...
uint16_t	getTDCByTime (double time) const
	Get TDC by time.

Private Member Functions
	ClassDef (KLMTimeConversion, 1)
	Class version,.

Private Attributes
double	m_TDCPeriod
	TDC period in ns.
double	m_TimeOffset
	Time offset.
int	m_CTimeShift
	CTIME shift in bits.

Detailed Description

KLM time conversion.

Definition at line 33 of file KLMTimeConversion.h.

Member Function Documentation

getRPCTimes()

std::pair< int, double > getRPCTimes	(	int	ctime,
		int	tdc,
		int	triggerTime
	)		const

Get coarse and fine times for RPC.

Parameters

[in]	ctime	REVO9 time.
[in]	tdc	TDC.
[in]	triggerTime	REVO9 Trigger time.

Definition at line 46 of file KLMTimeConversion.cc.

{
  /* Relative time in TDC periods for RPC hits. */
  int relativeTime = tdc & 0x7FF;
  /*
   * TDC frequency is 8 times greater than revo9 frequency.
   * The 2 last bits are zero, thus, the precision is 4 * (TDC period).
   * The TDC has 11 bits of dynamic range. Shift the triggerTime by
   * 10 ticks to align the new prompt-time peak with the old
   * TriggerCTime-relative peak (for backward compatibility of calibration).
   */
  int trigger = ((triggerTime - 10) & 0x0FF) << 3;
  if (relativeTime <= trigger)
    relativeTime -= trigger;
  else
    relativeTime -= trigger + 0x800;
  return std::pair<int, double>(ctime - triggerTime, relativeTime * m_TDCPeriod);
}

getScintillatorTime()

double getScintillatorTime	(	int	ctime,
		int	triggerCTime
	)		const

Get time for scintillator.

Parameters

[in]	ctime	CTIME.
[in]	triggerCTime	Trigger CTIME.

Definition at line 27 of file KLMTimeConversion.cc.

getTimeSimulation()

double getTimeSimulation	(	int	tdc,
		bool	scintillator
	)		const

Get time for simulation.

Parameters

[in]	tdc	TDC.
[in]	scintillator	Scintillator (true) or RPC (false).

Definition at line 65 of file KLMTimeConversion.cc.

setCTimeShift()

void setCTimeShift ( int  shift )

inline

Set CTIME shift.

Parameters

[in]

shift

Shift in bits.

Definition at line 76 of file KLMTimeConversion.h.

setTimeOffset()

void setTimeOffset ( double  offset )

inline

Set time offset.

Parameters

[in]

offset

Offset in ns.

Definition at line 67 of file KLMTimeConversion.h.

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

• klm/dbobjects/include/KLMTimeConversion.h
• klm/dbobjects/src/KLMTimeConversion.cc