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d3da6dc4 | 1 | #ifndef AliHMPIDDigit_h |
2 | #define AliHMPIDDigit_h | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
ea925242 | 6 | // Class of HMPID to manage digits ---> pads |
1b10372c | 7 | //. |
8 | //. | |
9 | //. | |
ea925242 | 10 | |
d3da6dc4 | 11 | #include <AliDigit.h> //base class |
49dfd67a | 12 | #include <AliRawReader.h> |
13 | #include <AliLog.h> | |
ea925242 | 14 | #include "TMath.h" //Mathieson() |
d3da6dc4 | 15 | #include <AliBitPacking.h> //Raw() |
ae5a42aa | 16 | #include "AliHMPIDParam.h" |
d3da6dc4 | 17 | |
d3da6dc4 | 18 | class TClonesArray; //Hit2Sdi() |
3c6274c1 | 19 | |
d3da6dc4 | 20 | class AliHMPIDDigit :public AliDigit //TObject-AliDigit-AliHMPIDDigit |
21 | { | |
22 | public: | |
ae5a42aa | 23 | |
d3da6dc4 | 24 | //ctor&dtor |
ae5a42aa | 25 | AliHMPIDDigit( ):AliDigit( ),fPad(AliHMPIDParam::Abs(-1,-1,-1,-1)),fQ(-1) {} //default ctor |
1d4857c5 | 26 | AliHMPIDDigit(Int_t pad,Int_t q,Int_t *t):AliDigit(t),fPad(pad ),fQ(q ) {} //digit ctor |
21f61e25 | 27 | AliHMPIDDigit(Int_t pad,Int_t q ):AliDigit( ),fPad(pad ),fQ(q ) {} //digit ctor |
1d4857c5 | 28 | AliHMPIDDigit(const AliHMPIDDigit &d ):AliDigit(d),fPad(d.fPad),fQ(d.fQ) {} //copy ctor |
29 | virtual ~AliHMPIDDigit() {} //dtor | |
d3da6dc4 | 30 | //framework part |
31 | Bool_t IsSortable ( )const{return kTRUE;} //provision to use TObject::Sort() | |
32 | inline Int_t Compare (const TObject *pObj )const; //provision to use TObject::Sort() | |
d1bf51e1 | 33 | void Draw (Option_t *opt="" ); //TObject::Draw() overloaded |
d3da6dc4 | 34 | void Print (Option_t *opt="" )const; //TObject::Print() overloaded |
35 | //private part | |
ae5a42aa | 36 | |
1d4857c5 | 37 | void AddTidOffset(Int_t offset ) {for (Int_t i=0; i<3; i++) if (fTracks[i]>0) fTracks[i]+=offset; } //needed for merging |
ae5a42aa | 38 | Int_t Ch ( )const{return AliHMPIDParam::A2C(fPad); } //chamber number |
39 | ||
40 | Float_t LorsX ( )const{return AliHMPIDParam::LorsX(AliHMPIDParam::A2P(fPad),AliHMPIDParam::A2X(fPad)); } //center of the pad x, [cm] | |
41 | ||
42 | Float_t LorsY ( )const{return AliHMPIDParam::LorsY(AliHMPIDParam::A2P(fPad),AliHMPIDParam::A2Y(fPad)); } //center of the pad y, [cm] | |
43 | // | |
76fd1a96 | 44 | inline Float_t Mathieson (Float_t x )const; //Mathieson distribution |
45 | inline Float_t IntPartMathi(Float_t z, Int_t axis )const; //integral in 1-dim of Mathieson | |
46 | inline Float_t IntMathieson(Float_t x,Float_t y )const; //integral in 2-dim of Mathieson | |
ae5a42aa | 47 | Int_t PadPcX ( )const{return AliHMPIDParam::A2X(fPad);} //pad pc x # 0..79 |
48 | Int_t PadPcY ( )const{return AliHMPIDParam::A2Y(fPad);} //pad pc y # 0..47 | |
49 | Int_t PadChX ( )const{return (Pc()%2)*AliHMPIDParam::kPadPcX+PadPcX();} //pad ch x # 0..159 | |
50 | Int_t PadChY ( )const{return (Pc()/2)*AliHMPIDParam::kPadPcY+PadPcY();} //pad ch y # 0..143 | |
d3da6dc4 | 51 | Int_t Pad ( )const{return fPad;} //absolute id of this pad |
ae5a42aa | 52 | Int_t Pc ( )const{return AliHMPIDParam::A2P(fPad);} //PC position number |
da08475b | 53 | Float_t Q ( )const{return fQ;} //charge, [QDC] |
21f61e25 | 54 | inline void Raw(UInt_t &w32,Int_t &ddl,Int_t &r,Int_t &d,Int_t &a)const; |
f3bae3e2 | 55 | inline Bool_t Set (Int_t c,Int_t p,Int_t x,Int_t y,Int_t tid=0); //manual creation |
56 | void SetQ (Float_t q ) {fQ=q;} //manual creation | |
ae5a42aa | 57 | void SetNsig (Int_t sigmas ) {AliHMPIDParam::fgSigmas=sigmas;} //set n sigmas |
ae5a42aa | 58 | |
21f61e25 | 59 | |
c5c19d6a | 60 | protected: //AliDigit has fTracks[3] |
ae5a42aa | 61 | |
62 | ||
1b10372c | 63 | Int_t fPad; //absolute pad number |
c5c19d6a | 64 | Float_t fQ; //QDC value, fractions are permitted for summable procedure |
65 | ClassDef(AliHMPIDDigit,4) //HMPID digit class | |
66 | };//class AliHMPIDDigit | |
cf7e313e | 67 | |
d3da6dc4 | 68 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
ae5a42aa | 69 | |
d3da6dc4 | 70 | Int_t AliHMPIDDigit::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 since they all will come 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 (fPad==((AliHMPIDDigit*)pObj)->Pad()) return 0; | |
77 | else if(fPad >((AliHMPIDDigit*)pObj)->Pad()) return 1; | |
da08475b | 78 | else return -1; |
d3da6dc4 | 79 | } |
80 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
ae5a42aa | 81 | |
76fd1a96 | 82 | Float_t AliHMPIDDigit::Mathieson(Float_t x)const |
83 | { | |
84 | // Mathieson function. | |
85 | // This is the answer to electrostatic problem of charge distrubution in MWPC described elsewhere. (NIM A370(1988)602-603) | |
86 | // Arguments: x- position of the center of Mathieson distribution | |
87 | // Returns: value of the Mathieson function | |
88 | Float_t kK1=0.28278795,kK2=0.96242952, kSqrtK3 =0.77459667, kD=0.445; | |
89 | Float_t lambda = x/kD; | |
90 | Float_t a=1-TMath::TanH(kK2*lambda)*TMath::TanH(kK2*lambda); | |
91 | Float_t b=1+kSqrtK3*kSqrtK3*TMath::TanH(kK2*lambda)*TMath::TanH(kK2*lambda); | |
92 | Float_t mathi = kK1*a/b; | |
93 | return mathi; | |
94 | } | |
95 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
96 | ||
97 | Float_t AliHMPIDDigit::IntPartMathi(Float_t z, Int_t axis)const | |
98 | { | |
99 | // Integration of Mathieson. | |
100 | // This is the answer to electrostatic problem of charge distrubution in MWPC described elsewhere. (NIM A370(1988)602-603) | |
101 | // Arguments: x,y- position of the center of Mathieson distribution | |
102 | // Returns: a charge fraction [0-1] imposed into the pad | |
103 | Float_t shift1,shift2; | |
104 | if(axis==1) { | |
105 | shift1 = -LorsX()+0.5*AliHMPIDParam::SizePadX(); | |
106 | shift2 = -LorsX()-0.5*AliHMPIDParam::SizePadX(); | |
107 | } else { | |
108 | shift1 = -LorsY()+0.5*AliHMPIDParam::SizePadY(); | |
109 | shift2 = -LorsY()-0.5*AliHMPIDParam::SizePadY(); | |
110 | } | |
111 | ||
112 | Float_t kK2=0.96242952, kSqrtK3 =0.77459667, kK4=0.37932926, kD=0.445; | |
113 | ||
114 | Float_t ux1=kSqrtK3*TMath::TanH(kK2*(z+shift1)/kD); | |
115 | Float_t ux2=kSqrtK3*TMath::TanH(kK2*(z+shift2)/kD); | |
116 | ||
117 | return kK4*(TMath::ATan(ux2)-TMath::ATan(ux1)); | |
118 | } | |
119 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
120 | ||
c5c19d6a | 121 | Float_t AliHMPIDDigit::IntMathieson(Float_t x,Float_t y)const |
d3da6dc4 | 122 | { |
c5c19d6a | 123 | // Integration of Mathieson. |
d3da6dc4 | 124 | // This is the answer to electrostatic problem of charge distrubution in MWPC described elsewhere. (NIM A370(1988)602-603) |
125 | // Arguments: x,y- position of the center of Mathieson distribution | |
126 | // Returns: a charge fraction [0-1] imposed into the pad | |
d3da6dc4 | 127 | |
76fd1a96 | 128 | Float_t xm = IntPartMathi(x,1); |
129 | Float_t ym = IntPartMathi(y,2); | |
130 | return 4*xm*ym; | |
d3da6dc4 | 131 | } |
132 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
1d4857c5 | 133 | void AliHMPIDDigit::Raw(UInt_t &w32,Int_t &ddl,Int_t &r,Int_t &d,Int_t &a)const |
d3da6dc4 | 134 | { |
135 | // Convert digit structure to raw word format | |
1d4857c5 | 136 | // Arguments: w32,ddl,r,d,a where to write the results |
137 | // Returns: none | |
138 | Int_t y2a[6]={5,3,1,0,2,4}; | |
139 | ||
21f61e25 | 140 | ddl=2*Ch()+Pc()%2; //DDL# 0..13 |
1d4857c5 | 141 | Int_t tmp=1+Pc()/2*8+PadPcY()/6; r=(Pc()%2)? 25-tmp:tmp; //row r=1..24 |
142 | d=1+PadPcX()/8; //DILOGIC# 1..10 | |
143 | a=y2a[PadPcY()%6]+6*(PadPcX()%8); //ADDRESS 0..47 | |
144 | ||
21f61e25 | 145 | w32=0; |
146 | //Printf("+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++"); | |
147 | // | |
148 | //Printf("AliHMPIDDigit::Raw ddl: %d r: %d d: %d a: %d",ddl,r,d,a); | |
149 | //Printf("+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++"); | |
150 | // Bool_t isOK=kTRUE; isOK= | |
151 | AliBitPacking::PackWord((fQ>4095)?(UInt_t)4095:(UInt_t)fQ,w32, 0,11); // 0000 0rrr rrdd ddaa aaaa qqqq qqqq qqqq Qdc bits (00..11) counts (0..4095) | |
152 | //Printf("isOK: %d",isOK); | |
153 | //molnarl: Since in simulation the the charge can be > than 4095 but not in real life we need to protect. If fQ>4095 after packing we will get 0 for the charge! | |
154 | assert(0<=a&&a<=47);AliBitPacking::PackWord( a ,w32,12,17); // 3322 2222 2222 1111 1111 1000 0000 0000 DILOGIC address bits (12..17) counts (0..47) | |
155 | assert(1<=d&&d<=10);AliBitPacking::PackWord( d ,w32,18,21); // 1098 7654 3210 9876 5432 1098 7654 3210 DILOGIC number bits (18..21) counts (1..10) | |
156 | assert(1<=r&&r<=24);AliBitPacking::PackWord( r ,w32,22,26); // Row number bits (22..26) counts (1..24) | |
157 | AliBitPacking::PackWord((UInt_t)0, w32,27,27); //To make sure set the 27th bit to Zero so we can distinguis it from the EoE | |
d3da6dc4 | 158 | } |
d3da6dc4 | 159 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
f3bae3e2 | 160 | Bool_t AliHMPIDDigit::Set(Int_t ch,Int_t pc,Int_t px,Int_t py,Int_t tid) |
1d4857c5 | 161 | { |
162 | // Manual creation of digit | |
163 | // Arguments: ch,pc,px,py,qdc,tid | |
f3bae3e2 | 164 | // Returns: kTRUE if wrong digit |
ae5a42aa | 165 | if(px<AliHMPIDParam::kMinPx || px>AliHMPIDParam::kMaxPx) return kTRUE; |
166 | if(py<AliHMPIDParam::kMinPy || py>AliHMPIDParam::kMaxPy) return kTRUE; | |
1d4857c5 | 167 | |
ae5a42aa | 168 | fPad=AliHMPIDParam::Abs(ch,pc,px,py);fTracks[0]=tid; |
f3bae3e2 | 169 | fQ=0; |
1d4857c5 | 170 | return kFALSE; |
171 | } | |
21f61e25 | 172 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
173 | ||
d3da6dc4 | 174 | #endif |