marlintpc::ElectronCloudDrifterProcessor Class Reference

ElectronCloudDrifterProcessor : This processor takes a collection of electron clouds from a previous processor and drifts them a supplied distance. More...

#include <ElectronCloudDrifterProcessor.h>

Inheritance diagram for marlintpc::ElectronCloudDrifterProcessor:

Classes
struct	driftInfo
	Detailed information about the drift path. More...
struct	DriftParameters

Public Member Functions
	ElectronCloudDrifterProcessor ()
	constructor
	~ElectronCloudDrifterProcessor ()
	destructor
virtual Processor *	newProcessor ()
	used by Marlin to create a new processor
virtual void	init ()
	Called at the begin of the job before anything is read. More...
virtual void	processRunHeader (lcio::LCRunHeader *run)
	Called for every run.
virtual void	processEvent (lcio::LCEvent *evt)
	Called for every event - the working horse.
virtual void	check (lcio::LCEvent *evt)
	Called after the event has been processed.
virtual void	end ()
	Called after data processing for clean up.

Static Public Member Functions
static int	ion_drift_derivative (double t, const double y[], double f[], void *params)
	the derivative function used for the GSL ode solving function
static int	drift_through_cylinder (double(&)[4], const double min_radius, const double max_radius, const double min_z, const double max_z, const double drift_velocity, const double omega_tau, const bool disable_magnetic_field=false, marlintpc::ElectronCloudDrifterProcessor *processor=0)
	the static drifting function that can be used by other processors (ie the LikelihoodFitter)

Public Attributes
int	_current_cloud
	Number of the current cloud needed by AIDA.

Detailed Description

ElectronCloudDrifterProcessor : This processor takes a collection of electron clouds from a previous processor and drifts them a supplied distance.

The parameters of the processor are designed to specify the area in which the drift occurs. It currently uses a adaptive Runge-Kutta-Fehlberg method for drifting the electrons in a non-uniform magnetic field.

Author

J. Abernathy (UVic)

If an AIDA processor is used the position, velocity,

,

and

at each step of the drift are stored in a root tree. This is done for each cloud and each event. The number of clouds is taken from the first event, and therefore it is assumed that the number of clouds per event is constant.

Author

K. Zenker (DESY)

Member Function Documentation

void marlintpc::ElectronCloudDrifterProcessor::init ( )

virtual

Called at the begin of the job before anything is read.

Use to initialize the processor, e.g. book histograms.

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

• ElectronCloudDrifterProcessor.h
• ElectronCloudDrifterProcessor.cc