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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 |
260a8dc4 | 26 | AliHMPIDDigit(Int_t pad,Int_t q,Int_t *t):AliDigit(t),fPad(pad ),fQ(q ) {if(fQ>4095)fQ=4095;} //digit ctor |
27 | AliHMPIDDigit(Int_t pad,Int_t q ):AliDigit( ),fPad(pad ),fQ(q ) {if(fQ>4095)fQ=4095;} //digit ctor | |
28 | AliHMPIDDigit(const AliHMPIDDigit &d ):AliDigit(d),fPad(d.fPad),fQ(d.fQ) {} //copy ctor | |
1d4857c5 | 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 | // | |
c770ceb9 | 44 | inline Double_t MathiesonX (Double_t x )const; //Mathieson distribution along wires X |
45 | inline Double_t MathiesonY (Double_t x )const; //Mathieson distribution perp to wires Y | |
46 | inline Double_t IntPartMathiX(Double_t z )const; //integral in 1-dim of Mathieson X | |
47 | inline Double_t IntPartMathiY(Double_t z )const; //integral in 1-dim of Mathieson Y | |
48 | inline Double_t IntMathieson (Double_t x,Double_t y )const; //integral in 2-dim of Mathieson | |
ae5a42aa | 49 | Int_t PadPcX ( )const{return AliHMPIDParam::A2X(fPad);} //pad pc x # 0..79 |
50 | Int_t PadPcY ( )const{return AliHMPIDParam::A2Y(fPad);} //pad pc y # 0..47 | |
51 | Int_t PadChX ( )const{return (Pc()%2)*AliHMPIDParam::kPadPcX+PadPcX();} //pad ch x # 0..159 | |
52 | Int_t PadChY ( )const{return (Pc()/2)*AliHMPIDParam::kPadPcY+PadPcY();} //pad ch y # 0..143 | |
d3da6dc4 | 53 | Int_t Pad ( )const{return fPad;} //absolute id of this pad |
ae5a42aa | 54 | Int_t Pc ( )const{return AliHMPIDParam::A2P(fPad);} //PC position number |
da08475b | 55 | Float_t Q ( )const{return fQ;} //charge, [QDC] |
21f61e25 | 56 | inline void Raw(UInt_t &w32,Int_t &ddl,Int_t &r,Int_t &d,Int_t &a)const; |
f3bae3e2 | 57 | inline Bool_t Set (Int_t c,Int_t p,Int_t x,Int_t y,Int_t tid=0); //manual creation |
ec575c20 | 58 | void SetQ (Float_t q ) {fQ=q;if(fQ>4095)fQ=4095;} //setter for charge |
59 | void SetPad (Int_t pad ) {fPad=pad;} //setter for pad | |
21f61e25 | 60 | |
c5c19d6a | 61 | protected: //AliDigit has fTracks[3] |
ae5a42aa | 62 | |
63 | ||
1b10372c | 64 | Int_t fPad; //absolute pad number |
c5c19d6a | 65 | Float_t fQ; //QDC value, fractions are permitted for summable procedure |
66 | ClassDef(AliHMPIDDigit,4) //HMPID digit class | |
67 | };//class AliHMPIDDigit | |
cf7e313e | 68 | |
d3da6dc4 | 69 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
ae5a42aa | 70 | |
d3da6dc4 | 71 | Int_t AliHMPIDDigit::Compare(const TObject *pObj) const |
72 | { | |
73 | // 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. | |
74 | // This feature is used in digitizer to facilitate finding of sdigits for the same pad since they all will come together after sorting. | |
75 | // Arguments: pObj - pointer to object to compare with | |
76 | // Retunrs: -1 if AbsPad less then in pObj, 1 if more and 0 if they are the same | |
77 | if (fPad==((AliHMPIDDigit*)pObj)->Pad()) return 0; | |
78 | else if(fPad >((AliHMPIDDigit*)pObj)->Pad()) return 1; | |
da08475b | 79 | else return -1; |
d3da6dc4 | 80 | } |
81 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
ae5a42aa | 82 | |
c770ceb9 | 83 | Double_t AliHMPIDDigit::MathiesonX(Double_t x)const |
76fd1a96 | 84 | { |
85 | // Mathieson function. | |
86 | // This is the answer to electrostatic problem of charge distrubution in MWPC described elsewhere. (NIM A370(1988)602-603) | |
87 | // Arguments: x- position of the center of Mathieson distribution | |
88 | // Returns: value of the Mathieson function | |
c770ceb9 | 89 | |
90 | Double_t lambda = x/AliHMPIDParam::PitchAnodeCathode(); | |
91 | Double_t tanh = TMath::TanH(AliHMPIDParam::K2x()*lambda); | |
92 | Double_t a=1-tanh*tanh; | |
93 | Double_t b=1+AliHMPIDParam::SqrtK3x()*AliHMPIDParam::SqrtK3x()*tanh*tanh; | |
94 | Double_t mathi = AliHMPIDParam::K1x()*a/b; | |
95 | return mathi; | |
96 | } | |
97 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
98 | ||
99 | Double_t AliHMPIDDigit::MathiesonY(Double_t y)const | |
100 | { | |
101 | // Mathieson function. | |
102 | // This is the answer to electrostatic problem of charge distrubution in MWPC described elsewhere. (NIM A370(1988)602-603) | |
103 | // Arguments: x- position of the center of Mathieson distribution | |
104 | // Returns: value of the Mathieson function | |
105 | ||
106 | Double_t lambda = y/AliHMPIDParam::PitchAnodeCathode(); | |
107 | Double_t tanh = TMath::TanH(AliHMPIDParam::K2y()*lambda); | |
108 | Double_t a=1-tanh*tanh; | |
109 | Double_t b=1+AliHMPIDParam::SqrtK3y()*AliHMPIDParam::SqrtK3y()*tanh*tanh; | |
110 | Double_t mathi = AliHMPIDParam::K1y()*a/b; | |
76fd1a96 | 111 | return mathi; |
112 | } | |
113 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
114 | ||
c770ceb9 | 115 | Double_t AliHMPIDDigit::IntPartMathiX(Double_t x)const |
76fd1a96 | 116 | { |
117 | // Integration of Mathieson. | |
118 | // This is the answer to electrostatic problem of charge distrubution in MWPC described elsewhere. (NIM A370(1988)602-603) | |
119 | // Arguments: x,y- position of the center of Mathieson distribution | |
120 | // Returns: a charge fraction [0-1] imposed into the pad | |
c770ceb9 | 121 | Double_t shift1 = -LorsX()+0.5*AliHMPIDParam::SizePadX(); |
122 | Double_t shift2 = -LorsX()-0.5*AliHMPIDParam::SizePadX(); | |
76fd1a96 | 123 | |
c770ceb9 | 124 | Double_t ux1=AliHMPIDParam::SqrtK3x()*TMath::TanH(AliHMPIDParam::K2x()*(x+shift1)/AliHMPIDParam::PitchAnodeCathode()); |
125 | Double_t ux2=AliHMPIDParam::SqrtK3x()*TMath::TanH(AliHMPIDParam::K2x()*(x+shift2)/AliHMPIDParam::PitchAnodeCathode()); | |
126 | ||
127 | return AliHMPIDParam::K4x()*(TMath::ATan(ux2)-TMath::ATan(ux1)); | |
128 | } | |
129 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
76fd1a96 | 130 | |
c770ceb9 | 131 | Double_t AliHMPIDDigit::IntPartMathiY(Double_t y)const |
132 | { | |
133 | // Integration of Mathieson. | |
134 | // This is the answer to electrostatic problem of charge distrubution in MWPC described elsewhere. (NIM A370(1988)602-603) | |
135 | // Arguments: x,y- position of the center of Mathieson distribution | |
136 | // Returns: a charge fraction [0-1] imposed into the pad | |
137 | Double_t shift1 = -LorsY()+0.5*AliHMPIDParam::SizePadY(); | |
138 | Double_t shift2 = -LorsY()-0.5*AliHMPIDParam::SizePadY(); | |
139 | ||
140 | Double_t uy1=AliHMPIDParam::SqrtK3y()*TMath::TanH(AliHMPIDParam::K2y()*(y+shift1)/AliHMPIDParam::PitchAnodeCathode()); | |
141 | Double_t uy2=AliHMPIDParam::SqrtK3y()*TMath::TanH(AliHMPIDParam::K2y()*(y+shift2)/AliHMPIDParam::PitchAnodeCathode()); | |
142 | ||
143 | return AliHMPIDParam::K4y()*(TMath::ATan(uy2)-TMath::ATan(uy1)); | |
76fd1a96 | 144 | |
76fd1a96 | 145 | } |
146 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
147 | ||
c770ceb9 | 148 | Double_t AliHMPIDDigit::IntMathieson(Double_t x,Double_t y)const |
d3da6dc4 | 149 | { |
c5c19d6a | 150 | // Integration of Mathieson. |
d3da6dc4 | 151 | // This is the answer to electrostatic problem of charge distrubution in MWPC described elsewhere. (NIM A370(1988)602-603) |
152 | // Arguments: x,y- position of the center of Mathieson distribution | |
153 | // Returns: a charge fraction [0-1] imposed into the pad | |
d3da6dc4 | 154 | |
c770ceb9 | 155 | Double_t xm = IntPartMathiX(x); |
156 | Double_t ym = IntPartMathiY(y); | |
76fd1a96 | 157 | return 4*xm*ym; |
d3da6dc4 | 158 | } |
159 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
1d4857c5 | 160 | void AliHMPIDDigit::Raw(UInt_t &w32,Int_t &ddl,Int_t &r,Int_t &d,Int_t &a)const |
d3da6dc4 | 161 | { |
162 | // Convert digit structure to raw word format | |
1d4857c5 | 163 | // Arguments: w32,ddl,r,d,a where to write the results |
164 | // Returns: none | |
165 | Int_t y2a[6]={5,3,1,0,2,4}; | |
166 | ||
74075fbf | 167 | ddl=2*Ch()+Pc()%2; //DDL# 0..13 |
74075fbf | 168 | Int_t tmp=1+Pc()/2*8+PadPcY()/6; r=(Pc()%2)? tmp:25-tmp; //row r=1..24 |
169 | d=1+PadPcX()/8; //DILOGIC# 1..10 | |
08801509 | 170 | a=y2a[PadPcY()%6]+6*(7-PadPcX()%8); //ADDRESS 0..47 |
409d1dee | 171 | |
21f61e25 | 172 | w32=0; |
173 | //Printf("+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++"); | |
174 | // | |
175 | //Printf("AliHMPIDDigit::Raw ddl: %d r: %d d: %d a: %d",ddl,r,d,a); | |
176 | //Printf("+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++"); | |
177 | // Bool_t isOK=kTRUE; isOK= | |
260a8dc4 | 178 | AliBitPacking::PackWord((UInt_t)fQ,w32, 0,11); // 0000 0rrr rrdd ddaa aaaa qqqq qqqq qqqq Qdc bits (00..11) counts (0..4095) |
21f61e25 | 179 | 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) |
180 | 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) | |
181 | assert(1<=r&&r<=24);AliBitPacking::PackWord( r ,w32,22,26); // Row number bits (22..26) counts (1..24) | |
182 | 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 | 183 | } |
d3da6dc4 | 184 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
f3bae3e2 | 185 | Bool_t AliHMPIDDigit::Set(Int_t ch,Int_t pc,Int_t px,Int_t py,Int_t tid) |
1d4857c5 | 186 | { |
187 | // Manual creation of digit | |
188 | // Arguments: ch,pc,px,py,qdc,tid | |
f3bae3e2 | 189 | // Returns: kTRUE if wrong digit |
ae5a42aa | 190 | if(px<AliHMPIDParam::kMinPx || px>AliHMPIDParam::kMaxPx) return kTRUE; |
191 | if(py<AliHMPIDParam::kMinPy || py>AliHMPIDParam::kMaxPy) return kTRUE; | |
1d4857c5 | 192 | |
ae5a42aa | 193 | fPad=AliHMPIDParam::Abs(ch,pc,px,py);fTracks[0]=tid; |
f3bae3e2 | 194 | fQ=0; |
1d4857c5 | 195 | return kFALSE; |
196 | } | |
21f61e25 | 197 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
198 | ||
d3da6dc4 | 199 | #endif |