AliEMCALGeoParams.h

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#ifndef ALIEMCALGEOPARAMS_H
#define ALIEMCALGEOPARAMS_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */


class AliEMCALGeoParams
{

public:

  // General geometry info
  static const int fgkEMCALModules     = 22;   
  static const int fgkEMCALRows        = 24;   
  static const int fgkEMCALCols        = 48;   

  static const int fgkEMCALLEDRefs     = 24;   
  static const int fgkEMCALTempSensors = 8;    

  // Strip 0 is the one closest to the FEE crates; different for A (iColumn/2) and C sides
  Int_t GetStripModule(Int_t iSM, Int_t iCol) const
    { return ( (iSM%2==0) ? iCol/2 : AliEMCALGeoParams::fgkEMCALLEDRefs - 1 - iCol/2 ); }

  // also a few readout related variables:
  //  static const int fgkLastAltroDDL     = 39;   ///< 0..23 (i.e. 24) for EMCAL; 24..39 (i.e. 16) allocated for DCAL
  static const int fgkSampleMax        = 1023; 
  static const int fgkOverflowCut      = 950;  
  static const int fgkSampleMin        = 0;    

  // TRU numbers
  static const int fgkEMCALTRUsPerSM   = 3;    
  static const int fgkEMCAL2x2PerTRU   = 96;   
  static const int fgkEMCALTRURows     = 4;    
  static const int fgkEMCALTRUCols     = 24;   

  // STU numbers
  static const int fgkEMCALSTUCols     = 48;   
  static const int fgkEMCALSTURows     = 64;   
  
  // RAW/AliCaloAltroMapping provides the correspondence information between
  // an electronics HWAddress (Branch<<1 | FEC<<7 | ALTRO<<4 | Channel) 
  // for the RCUs and which tower (Column and Row) that corresponds to. 
  // For the cases when one doesn't have a Raw stream to decode the HW address
  // into the other FEE indices, we provide the needed simple methods here 
  // with arguments (within an RCU)
  Int_t GetHWAddress(Int_t iBranch, Int_t iFEC, Int_t iALTRO, Int_t iChannel) const
  { return ( (iBranch<<11) | (iFEC<<7) | (iALTRO<<4) | iChannel ); } 
  // and for converting back to the individual indices
  Int_t GetBranch(Int_t iHW)  const { return ( (iHW>>11) & 0x1 ) ; } // 
  Int_t GetFEC(Int_t iHW)     const { return ( (iHW>>7) & 0xf )  ; } // 
  Int_t GetAltro(Int_t iHW)   const { return ( (iHW>>4) & 0x7 )  ; } // 
  Int_t GetChannel(Int_t iHW) const { return ( iHW & 0xf )       ; } // 

  // We can also encode a very similar CSP address
  Int_t GetCSPAddress(Int_t iBranch, Int_t iFEC, Int_t iCSP) const
  { return ( (iBranch<<11) | (iFEC<<7) | iCSP ); }; // 
  // and for converting back to the individual indices
  // Branch and FEC methods would just be the same as above
  Int_t GetCSPFromAddress(Int_t i) const { return ( i & 0x1f )   ; } // 

  /* // Below is some placeholder info that can later be added
     // in AliEMCALGeometry, together with the Get methods just above 

  // But which CSP (0..31) corresponds to which ALTRO and Channel is not 
  // given anywhere (CSPs are used for APD biases etc).
  // So, we add a conversion method for that here also.
  // The order that the CSPs appear in the data is a bit funky so I include
  // a mapping array instead of some complicated function
  static const int fgkNCSP = 32;
  static const int fgkCspOrder[32] =
    { // just from ALTRO mapping of chips/channels to CSP
      11,  27,  10,  26,  24,   8,  25,   9, // ALTRO 0
      3,  19,   2,  18,  16,   0,  17,   1, // ALTRO 2
      4,  20,   5,  21,  23,   7,  22,   6, // ALTRO 3
      12,  28,  13,  29,  31,  15,  30,  14 // ALTRO 4
    };
  // This method is not used for reconstruction or so, but just for cross-
  // checks with the DCS for the APD biases. 
  int GetCSP(int iALTRO, int iChannel) const 
  { 
    int id = iChannel/2; // 2 channels per tower (low and high gain)
    int ichip = iALTRO;
    if (ichip>=2) { ichip--; } // there is no ALTRO 1; (0,2,3,4 -> 0,1,2,3)
    id += ichip*8; // 8 CSPs per ALTRO
    //return fgkCspOrder[id];
    return id;
  }

  */
  
};

#endif //ALIEMCALGEOPARAMS_H