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1 #ifndef AliTRDCOMMONPARAM_H
2 #define AliTRDCOMMONPARAM_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4  * See cxx source for full Copyright notice                               */
5
6 ///////////////////////////////////////////////////////////////////////////////
7 //                                                                           //
8 // Class containing constant common parameters                               //
9 //                                                                           //
10 ///////////////////////////////////////////////////////////////////////////////
11
12 /* $Id$ */
13
14 #include "TObject.h"
15
16 class TRootIoCtor;
17
18 class AliTRDpadPlane;
19
20 class AliTRDCommonParam : public TObject
21 {
22
23   public:
24   
25     enum { kNlayer = 6, kNstack = 5, kNsector = 18, kNdet = 540 };
26     
27     AliTRDCommonParam(TRootIoCtor *);
28     AliTRDCommonParam(const AliTRDCommonParam &p);   
29     AliTRDCommonParam &operator=(const AliTRDCommonParam &p); 
30     virtual        ~AliTRDCommonParam();
31
32     static AliTRDCommonParam *Instance();
33     static  void    Terminate();
34
35     virtual void    Copy(TObject &p) const;
36     
37     void            SetExB(Int_t exbOn = 1)                        { fExBOn             = exbOn;  }
38     void            SetSamplingFrequency(Float_t freq)             { fSamplingFrequency = freq;   }
39
40     Bool_t          ExBOn() const                                  { return fExBOn;               }
41     Float_t         GetSamplingFrequency() const                   { return fSamplingFrequency;   }
42
43   protected:
44
45     void            Init();
46
47     static AliTRDCommonParam *fgInstance;          //  Instance of this class (singleton implementation)
48     static Bool_t             fgTerminated;        //  Defines if this class has already been terminated    
49     Int_t                     fExBOn;              //  Switch for the ExB effects
50     Float_t                   fSamplingFrequency;  //  Sampling Frequency in MHz
51   
52   private:
53
54     // This is a singleton, constructor is private!  
55     AliTRDCommonParam();
56   
57     ClassDef(AliTRDCommonParam,6)                  // The constant parameters common to simulation and reconstruction
58
59 };
60
61 #endif