Gem_Tracker.h

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//! \file
//!
//! Header file for the Gem_Tracker class.
//!
//! The Gem_Tracker class is used to build the GEM tracking detector
//! for the OLYMPUS detector simulation.
//!
//! \author D.K. Hasell
//! \version 1.0
//! \date 2010-10-15
//!
//! \ingroup detector

// *+****1****+****2****+****3****+****4****+****5****+****6****+****7****+****

// Ensure this header file is only included once.

#ifndef GEM_TRACKER_H
#define GEM_TRACKER_H

// Define the number of GT detectors (NB also used in GT_SD).

#define N_GT 2

// Declare the classes referenced here.

class G4VPhysicalVolume;

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//! Gem_Tracker class.
//!
//! This class builds the Gem_Tracking detector. It is
//! instantiated by the OLYMPUS Detector class memeber function Construct()
//! and then the Build() member function builds the detector and places it in
//! the world volume.  The Build member function also creates an
//! instantiation the GT_SD class.

class Gem_Tracker {

public:

     //! Constructor for the Gem_Tracker class.
     //!
     //! Called by OLYMPUS Detector member Construct() to create an instance
     //! of this class.

     Gem_Tracker();

     //! Destructor for the Gem_Tracker class.
     //!
     //! Called by OLYMPUS Detector member Construct() to delete this instance.

     ~Gem_Tracker();

     // Member functions.

     //! Member function to build the the Gem_Tracker.
     //!
     //! Called by OLYMPUS Detector member Construct() to build the detector
     //! and place it in the world volume.  This function also creates an
     //! instance of GT_SD, the Gem_Tracker sensitive detector class.

     void Build( G4VPhysicalVolume * World_phys );

private:

};

#endif