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Cluster multiplicity offset (Nclus>200) to take into account bkg in PatRec
[u/mrichter/AliRoot.git] / RICH / AliRICHDigit.h
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0fe8fa07 1#ifndef AliRICHDigit_h
2#define AliRICHDigit_h
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
0422a446 6#include <AliDigit.h> //base class
7#include <AliBitPacking.h> //Dig2Raw()
0fe8fa07 8#include "AliRICHParam.h"
9
0422a446 10//RICH DDL ID allowed range is [0x700,0x714] or in decimal notation [1792,1812]. 20 DDL files are reserved. (kDdlOffset)
11//RICH actually uses 14 DDLs (kNddls), 2 per chamber, even number for left part(1-3-5) odd number for right part(2-4-6)
12//So the chamber-DDL map is:
13//N 0 1L=0x700 1792 N 1 1R=0x701 1793
14//N 2 2L=0x702 1794 N 3 2R=0x703 1795
15//N 4 3L=0x704 1796 N 5 3R=0x705 1797
16//N 6 4L=0x706 1798 N 7 4R=0x707 1799
17//N 8 5L=0x708 1800 N 9 5R=0x709 1801
18//N 10 6L=0x70a 1802 N 11 6R=0x70b 1803
19//N 12 7L=0x70c 1804 N 13 7R=0x70d 1805
20//RICH has no any propriate header just uses the common one
21//RICH chamber is divide on 2 halves vertically
22//Half chamber is divided by 24 rows counted from 1 to 24 (8 raws per sector) from top to bottom for left half chamber (sectors 1-3-5)
23// and from bottom to top for right half chamber (sectors 2-4-6) as seen from MARS (0,0,0)
24//Raw is composed from 10 DILOGIC chips (kNchips) counted from left to right from 1 to 10 as seen from MARS (0,0,0)
25//So each DILOGIC chip serves 48 channels for the 8x6 pads box (kChipX,kChipY). Channels counted from 0 to 47.
26//??????? Currently the exact mapping of DILOGIC addresses to pads is not known. So we invented horizontal zig-zag ???????
27//So RICH raw word is 32 bits word with structure:
28// 00000 rrrrr dddd aaaaaa qqqqqqqqqqqq
29// 5 bits zero 5 bits raw number (1..24) 4 bits DILOGIC chip number (1..10) 6 bits DILOGIC address (0..47) 12 bits QDC value (0..4095)
30
0fe8fa07 31class AliRICHDigit :public AliDigit
32{
33public:
0422a446 34 enum EAbsPad {kChamber=10000000,kPadX=1000}; //absolute pad number structure
35 enum ERawProp{kChipX=8,kChipY=6,kNchips=10,kNddls=14,kRichRawId=7,kDdlOffset=0x700};//DILOGIC is 8x6 pads
36 AliRICHDigit() :AliDigit(),fCFM(-1),fChamber(-1 ) ,fPadX(-1) ,fPadY(-1) ,fQdc(-1) {}
37 AliRICHDigit(Int_t c,Int_t x,Int_t y,Double_t q):AliDigit(),fCFM(-1),fChamber(10*c) ,fPadX(x ) ,fPadY(y ) ,fQdc(q ) {}
0fe8fa07 38 AliRICHDigit(Int_t c,TVector pad,Double_t q,Int_t cfm,Int_t tid0,Int_t tid1,Int_t tid2):fCFM(cfm)
39 {fPadX=(Int_t)pad[0];fPadY=(Int_t)pad[1];fQdc=q;fChamber=10*c+AliRICHParam::Pad2Sec(pad);fTracks[0]=tid0;fTracks[1]=tid1;fTracks[2]=tid2;}
40 virtual ~AliRICHDigit() {;}
0422a446 41//framework part
42 Bool_t IsSortable ( )const{return kTRUE;} //provision to use TObject::Sort()
43 inline Int_t Compare (const TObject *pObj)const; //provision to use TObject::Sort()
44 void Print (Option_t *option="")const; //TObject Print() overload
0fe8fa07 45//private part
0422a446 46 void AddTidOffset(Int_t offset ) {for (Int_t i=0; i<3; i++) if (fTracks[i]>0) fTracks[i]+=offset;}; //needed for merging
47 Int_t Cfm ( )const{return fCFM;} //particle mixture for this digit
48 Int_t Chamber ( )const{return fChamber/10;} //chamber number
49 Int_t Sector ( )const{return fChamber%10;} //sector number
50 Int_t PadX ( )const{return fPadX;} //x position of the pad
51 Int_t PadY ( )const{return fPadY;} //y postion of the pad
52 TVector Pad ( )const{Float_t v[2]={fPadX,fPadY}; return TVector(2,v);}
53 Int_t PadAbs ( )const{return fChamber*kChamber+fPadX*kPadX+fPadY;} //absolute id of this pad
54 Double_t Qdc ( )const{return fQdc;} //charge in terms of ADC channels
55 inline Int_t Dig2Raw ( UInt_t &w)const; //returns DDL ID and fill raw 32 bits word
56 inline void Raw2Dig (Int_t d,UInt_t w); //(DDL,word32)->(ch,sec,padx,pady,QDC)
57 static Int_t P2C (Int_t pad ) {return pad/kChamber;} //abs pad number-> chamber number
58 static Int_t P2X (Int_t pad ) {return pad%kChamber/kPadX;} //abs pad number-> pad X number
59 static Int_t P2Y (Int_t pad ) {return pad%kChamber%kPadX;} //abs pad number-> pad Y number
60 void Test ( ); //used to test all possible digit manipulations
0fe8fa07 61protected:
62 Int_t fCFM; //1000000*Ncerenkovs+1000*Nfeedbacks+Nmips
63 Int_t fChamber; //10*chamber number+ sector number
64 Int_t fPadX; //pad number along X
65 Int_t fPadY; //pad number along Y
66 Double_t fQdc; //QDC value, fractions are permitted for summable procedure
67 ClassDef(AliRICHDigit,3) //RICH digit class
68};//class AliRICHDigit
0422a446 69//__________________________________________________________________________________________________
70Int_t AliRICHDigit::Compare(const TObject *pObj) const
71{
72//Used in Sort() method to compare to objects. Note that abs pad structure is first x then y, hence will be sorted on column basis.
73//This feature is used in digitizer to facilitate finding of sdigits for the same pad as they will be together after sorting.
74//Arguments: pObj - pointer to object to compare with
75// Retunrs: -1 if AbsPad less then in pObj, 1 if more and 0 if they are the same
76 if(PadAbs()==((AliRICHDigit*)pObj)->PadAbs())
77 return 0;
78 else if(PadAbs()>((AliRICHDigit*)pObj)->PadAbs())
79 return 1;
80 else
81 return -1;
82}
83//__________________________________________________________________________________________________
84void AliRICHDigit::Raw2Dig(Int_t ddl,UInt_t w32)
85{
86//Reads next raw word from raw data stream and convert
87//Arguments: w32 - 32 bits word as in raw data stream
88// ddl - DDL file number 0 1 2 3 4 ... 13
89// Returns: none
90 fQdc = AliBitPacking::UnpackWord(w32, 0,11); // 0000 0rrr rrdd ddaa aaaa qqqq qqqq qqqq
91 UInt_t a = AliBitPacking::UnpackWord(w32,12,17); // 3322 2222 2222 1111 1111 1000 0000 0000
92 UInt_t d = AliBitPacking::UnpackWord(w32,18,21); // 1098 7654 3210 9876 5432 1098 7654 3210
93 UInt_t r = AliBitPacking::UnpackWord(w32,22,26); // r- iRawN d- iChiN a- iChiC
94
95 fPadY = (r-1)*kChipY+a/kChipX+1;
96 fPadX = (d-1)*kChipX+a%kChipX+1; fPadX+=(ddl%2)*kChipX*kNchips;//if ddl is odd then right half of the chamber
97 TVector pad(2); pad[0]=fPadX;pad[1]=fPadY;
98 fChamber = ((ddl+2)/2)*10+AliRICHParam::Pad2Sec(pad); // ddl 0..13 to chamber 1..7
99}
100//__________________________________________________________________________________________________
101Int_t AliRICHDigit::Dig2Raw(UInt_t &w32)const
102{
103//Convert digit structure to raw word format
104//Arguments: 32 bits raw word to fill
105// Returns: DDL ID where to write this digit
106 Int_t ddl=2*Chamber()-1; //chamber 1..7 -> DDL 0..13, this idDdl is for right half (sectors 2 4 6), to be decremented if d < kNchips
107 UInt_t a = (PadY()-1)%kChipY*kChipX+(PadX()-1)%kChipX; //invented to be horizontal zig-zag
108 UInt_t r =1+(PadY()-1)/kChipY;
109 UInt_t d =1+(PadX()-1)/kChipX;
110 if(d>kNchips)
111 d-=kNchips; //chip number more then kNchips means right half of chamber, goes to this ddl
112 else
113 ddl--; //chip number less then kNchips means left half of the chamber, goes to ddl-1
114
115 w32=0;
116 AliBitPacking::PackWord((UInt_t)fQdc,w32, 0,11); // 0000 0rrr rrdd ddaa aaaa qqqq qqqq qqqq
117 AliBitPacking::PackWord( a,w32,12,17); // 3322 2222 2222 1111 1111 1000 0000 0000
118 AliBitPacking::PackWord( d,w32,18,21); // 1098 7654 3210 9876 5432 1098 7654 3210
119 AliBitPacking::PackWord( r,w32,22,26);
120 return ddl; //ddl 0..13 where to write this digit
121}
0fe8fa07 122
123#endif