/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice */
+// Class of HMPID to manage digits ---> pads
+//.
+//.
+//.
+
#include <AliDigit.h> //base class
-#include <TMath.h> //Mathieson()
-#include <TRandom.h> //IsOverTh()
+#include <AliRawReader.h>
+#include <AliLog.h>
+#include "TMath.h" //Mathieson()
#include <AliBitPacking.h> //Raw()
-
+#include "AliHMPIDParam.h"
+//#include "AliHMPIDRawStream.h"
class TClonesArray; //Hit2Sdi()
class AliHMPIDDigit :public AliDigit //TObject-AliDigit-AliHMPIDDigit
{
public:
- enum EChamberData{kMinCh=0,kMaxCh=6,kMinPc=0,kMaxPc=5}; //Segmenation
- enum EPadxData{kPadPcX=80,kMinPx=0,kMaxPx=79,kMaxPcx=159}; //Segmentation structure along x
- enum EPadyData{kPadPcY=48,kMinPy=0,kMaxPy=47,kMaxPcy=143}; //Segmentation structure along y
+
//ctor&dtor
- AliHMPIDDigit( ):AliDigit( ),fPad(Abs(-1,-1,-1,-1)),fQ(-1) {} //default ctor
- AliHMPIDDigit(Int_t pad,Int_t q,Int_t *t):AliDigit(t),fPad(pad ),fQ(q ) {} //digit ctor
- AliHMPIDDigit(const AliHMPIDDigit &d ):AliDigit(d),fPad(d.fPad),fQ(d.fQ) {} //copy ctor
+ AliHMPIDDigit( ):AliDigit( ),fPad(AliHMPIDParam::Abs(-1,-1,-1,-1)),fQ(-1) {} //default ctor
+ AliHMPIDDigit(Int_t pad,Int_t q,Int_t *t):AliDigit(t),fPad(pad ),fQ(q ) {if(fQ>4095)fQ=4095;} //digit ctor
+ AliHMPIDDigit(Int_t pad,Int_t q ):AliDigit( ),fPad(pad ),fQ(q ) {if(fQ>4095)fQ=4095;} //digit ctor
+ AliHMPIDDigit(const AliHMPIDDigit &d ):AliDigit(d),fPad(d.fPad),fQ(d.fQ) {} //copy ctor
virtual ~AliHMPIDDigit() {} //dtor
//framework part
Bool_t IsSortable ( )const{return kTRUE;} //provision to use TObject::Sort()
void Draw (Option_t *opt="" ); //TObject::Draw() overloaded
void Print (Option_t *opt="" )const; //TObject::Print() overloaded
//private part
- static Int_t Abs (Int_t c,Int_t s,Int_t x,Int_t y) {return c*100000000+s*1000000+x*1000+y; } //(ch,pc,padx,pady)-> abs pad
- static Int_t A2C (Int_t pad ) {return pad/100000000; } //abs pad -> chamber
- static Int_t A2P (Int_t pad ) {return pad%100000000/1000000; } //abs pad -> pc
- static Int_t A2X (Int_t pad ) {return pad%1000000/1000; } //abs pad -> pad X
- static Int_t A2Y (Int_t pad ) {return pad%1000; } //abs pad -> pad Y
+
void AddTidOffset(Int_t offset ) {for (Int_t i=0; i<3; i++) if (fTracks[i]>0) fTracks[i]+=offset; } //needed for merging
- Int_t Ch ( )const{return A2C(fPad); } //chamber number
- static Bool_t IsOverTh (Float_t q ) {return q >= 4; } //is digit over threshold????
- static Bool_t IsInside (Float_t x,Float_t y ) {return x>0&&y>0&&x<SizeAllX()&&y<SizeAllY(); } //is point inside chamber boundary?
- Float_t LorsX ( )const{return LorsX(A2P(fPad),A2X(fPad)); } //center of the pad x, [cm]
- static Float_t LorsX (Int_t pc,Int_t padx ) {return (padx +0.5)*SizePadX()+(pc %2)*(SizePcX()+SizeDead());} //center of the pad x, [cm]
- Float_t LorsY ( )const{return LorsY(A2P(fPad),A2Y(fPad)); } //center of the pad y, [cm]
- static Float_t LorsY (Int_t pc,Int_t pady ) {return (pady +0.5)*SizePadY()+(pc /2)*(SizePcY()+SizeDead());} //center of the pad y, [cm]
- inline Float_t Mathieson (Float_t x,Float_t y )const; //Mathieson distribution
- Int_t PadPcX ( )const{return A2X(fPad);} //pad pc x # 0..79
- Int_t PadPcY ( )const{return A2Y(fPad);} //pad pc y # 0..47
- Int_t PadChX ( )const{return (Pc()%2)*kPadPcX+PadPcX();} //pad ch x # 0..159
- Int_t PadChY ( )const{return (Pc()/2)*kPadPcY+PadPcY();} //pad ch y # 0..143
+ Int_t Ch ( )const{return AliHMPIDParam::A2C(fPad); } //chamber number
+
+ Float_t LorsX ( )const{return AliHMPIDParam::LorsX(AliHMPIDParam::A2P(fPad),AliHMPIDParam::A2X(fPad)); } //center of the pad x, [cm]
+
+ Float_t LorsY ( )const{return AliHMPIDParam::LorsY(AliHMPIDParam::A2P(fPad),AliHMPIDParam::A2Y(fPad)); } //center of the pad y, [cm]
+//
+ inline Double_t MathiesonX (Double_t x )const; //Mathieson distribution along wires X
+ inline Double_t MathiesonY (Double_t x )const; //Mathieson distribution perp to wires Y
+ inline Double_t IntPartMathiX(Double_t z )const; //integral in 1-dim of Mathieson X
+ inline Double_t IntPartMathiY(Double_t z )const; //integral in 1-dim of Mathieson Y
+ inline Double_t IntMathieson (Double_t x,Double_t y )const; //integral in 2-dim of Mathieson
+ Int_t PadPcX ( )const{return AliHMPIDParam::A2X(fPad);} //pad pc x # 0..79
+ Int_t PadPcY ( )const{return AliHMPIDParam::A2Y(fPad);} //pad pc y # 0..47
+ Int_t PadChX ( )const{return (Pc()%2)*AliHMPIDParam::kPadPcX+PadPcX();} //pad ch x # 0..159
+ Int_t PadChY ( )const{return (Pc()/2)*AliHMPIDParam::kPadPcY+PadPcY();} //pad ch y # 0..143
Int_t Pad ( )const{return fPad;} //absolute id of this pad
- Int_t Pc ( )const{return A2P(fPad);} //PC position number
+ Int_t Pc ( )const{return AliHMPIDParam::A2P(fPad);} //PC position number
Float_t Q ( )const{return fQ;} //charge, [QDC]
- inline void Raw (UInt_t &w32,Int_t &ddl,Int_t &r,Int_t &d,Int_t &a)const; //digit->(w32,ddl,r,d,a)
- inline void Raw (UInt_t w32,Int_t ddl ); //(w32,ddl)->digit
- inline Bool_t Set (Int_t c,Int_t p,Int_t x,Int_t y,Float_t q=0,Int_t tid=0); //manual creation
- static void WriteRaw (TObjArray *pDigLst ); //write as raw stream
-
- static Float_t SizeAllX ( ) {return fMaxPcX[5];} //all PCs size x, [cm]
- static Float_t SizeAllY ( ) {return fMaxPcY[5];} //all PCs size y, [cm]
- static Float_t SizeArea ( ) {return SizePcX()*SizePcY()*(kMaxPc-kMinPc+1);} //sence area, [cm^2]
- static Float_t SizeDead ( ) {return 2.6;} //dead zone size x, [cm]
- static Float_t SizeGap ( ) {return 8; }
- static Float_t SizePadX ( ) {return 0.8;} //pad size x, [cm]
- static Float_t SizePadY ( ) {return 0.84;} //pad size y, [cm]
- static Float_t SizePcX ( ) {return fMaxPcX[0];} //PC size x, [cm]
- static Float_t SizePcY ( ) {return fMaxPcY[0];} //PC size y, [cm]
- static Float_t SizeWin ( ) {return 0.5;} //Quartz window width
- static Float_t SizeRad ( ) {return 1.5;} //Rad width
- static const Float_t fMinPcX[6];
- static const Float_t fMinPcY[6];
- static const Float_t fMaxPcX[6];
- static const Float_t fMaxPcY[6];
-
- inline static Bool_t IsInDead(Float_t x,Float_t y ); //is point in dead area?
- inline static void Lors2Pad(Float_t x,Float_t y,Int_t &pc,Int_t &px,Int_t &py); //(x,y)->(pc,px,py)
-
-protected: //AliDigit has fTracks[3]
- Int_t fPad; //absolute pad number
- Float_t fQ; //QDC value, fractions are permitted for summable procedure
- ClassDef(AliHMPIDDigit,4) //HMPID digit class
-};//class AliHMPIDDigitN
+ inline void Raw(UInt_t &w32,Int_t &ddl,Int_t &r,Int_t &d,Int_t &a)const;
+ inline Bool_t Set (Int_t c,Int_t p,Int_t x,Int_t y,Int_t tid=0); //manual creation
+ void SetQ (Float_t q ) {fQ=q;if(fQ>4095)fQ=4095;} //setter for charge
+ void SetPad (Int_t pad ) {fPad=pad;} //setter for pad
+
+protected: //AliDigit has fTracks[3]
+
-typedef AliHMPIDDigit AliRICHDigit; // for backward compatibility
+ Int_t fPad; //absolute pad number
+ Float_t fQ; //QDC value, fractions are permitted for summable procedure
+ ClassDef(AliHMPIDDigit,4) //HMPID digit class
+};//class AliHMPIDDigit
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-void AliHMPIDDigit::Lors2Pad(Float_t x,Float_t y,Int_t &pc,Int_t &px,Int_t &py)
-{
-// Check the pad of given position
-// Arguments: x,y- position [cm] in LORS; pc,px,py- pad where to store the result
-// Returns: none
- pc=px=py=-1;
- if (x>= 0 && x<= SizePcX() ) {pc=0; px=Int_t( x / SizePadX());}//PC 0 or 2 or 4
- else if(x>=SizePcX()+SizeDead() && x<= SizeAllX() ) {pc=1; px=Int_t((x- SizePcX()- SizeDead()) / SizePadX());}//PC 2 or 4 or 6
- else return;
- if (y>= 0 && y<= SizePcY() ) { py=Int_t( y / SizePadY());}//PC 0 or 1
- else if(y>=SizePcY()+SizeDead() && y<=2*SizePcY()+SizeDead() ) {pc+=2;py=Int_t((y- SizePcY()- SizeDead()) / SizePadY());}//PC 2 or 3
- else if(y>=SizeAllY()-SizePcY() && y<= SizeAllY() ) {pc+=4;py=Int_t((y-2*SizePcY()-2*SizeDead()) / SizePadY());}//PC 4 or 5
- else return;
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
Int_t AliHMPIDDigit::Compare(const TObject *pObj) const
{
// 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.
else return -1;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Bool_t AliHMPIDDigit::IsInDead(Float_t x,Float_t y)
+
+Double_t AliHMPIDDigit::MathiesonX(Double_t x)const
{
-// Check is the current point is outside of sensitive area or in dead zones
-// Arguments: x,y -position
-// Returns: 1 if not in sensitive zone
- if(x<0 || x>SizeAllX() || y<0 || y>SizeAllY()) return kTRUE; //out of pc
+// Mathieson function.
+// This is the answer to electrostatic problem of charge distrubution in MWPC described elsewhere. (NIM A370(1988)602-603)
+// Arguments: x- position of the center of Mathieson distribution
+// Returns: value of the Mathieson function
- if(x>SizePcX() && x<SizePcX()+SizeDead()) return kTRUE; //in dead zone along x
+ Double_t lambda = x/AliHMPIDParam::PitchAnodeCathode();
+ Double_t tanh = TMath::TanH(AliHMPIDParam::K2x()*lambda);
+ Double_t a=1-tanh*tanh;
+ Double_t b=1+AliHMPIDParam::SqrtK3x()*AliHMPIDParam::SqrtK3x()*tanh*tanh;
+ Double_t mathi = AliHMPIDParam::K1x()*a/b;
+ return mathi;
+}
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+Double_t AliHMPIDDigit::MathiesonY(Double_t y)const
+{
+// Mathieson function.
+// This is the answer to electrostatic problem of charge distrubution in MWPC described elsewhere. (NIM A370(1988)602-603)
+// Arguments: x- position of the center of Mathieson distribution
+// Returns: value of the Mathieson function
- if(y>SizePcY() && y<SizePcY()+SizeDead()) return kTRUE; //in first dead zone along y
- if(y>SizeAllY()-SizePcY()-SizeDead() && y<SizeAllY()-SizePcY()) return kTRUE; //in second dead zone along y
- return kFALSE;
+ Double_t lambda = y/AliHMPIDParam::PitchAnodeCathode();
+ Double_t tanh = TMath::TanH(AliHMPIDParam::K2y()*lambda);
+ Double_t a=1-tanh*tanh;
+ Double_t b=1+AliHMPIDParam::SqrtK3y()*AliHMPIDParam::SqrtK3y()*tanh*tanh;
+ Double_t mathi = AliHMPIDParam::K1y()*a/b;
+ return mathi;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Float_t AliHMPIDDigit::Mathieson(Float_t x,Float_t y)const
+
+Double_t AliHMPIDDigit::IntPartMathiX(Double_t x)const
{
+// Integration of Mathieson.
+// This is the answer to electrostatic problem of charge distrubution in MWPC described elsewhere. (NIM A370(1988)602-603)
+// Arguments: x,y- position of the center of Mathieson distribution
+// Returns: a charge fraction [0-1] imposed into the pad
+ Double_t shift1 = -LorsX()+0.5*AliHMPIDParam::SizePadX();
+ Double_t shift2 = -LorsX()-0.5*AliHMPIDParam::SizePadX();
+
+ Double_t ux1=AliHMPIDParam::SqrtK3x()*TMath::TanH(AliHMPIDParam::K2x()*(x+shift1)/AliHMPIDParam::PitchAnodeCathode());
+ Double_t ux2=AliHMPIDParam::SqrtK3x()*TMath::TanH(AliHMPIDParam::K2x()*(x+shift2)/AliHMPIDParam::PitchAnodeCathode());
+
+ return AliHMPIDParam::K4x()*(TMath::ATan(ux2)-TMath::ATan(ux1));
+}
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+Double_t AliHMPIDDigit::IntPartMathiY(Double_t y)const
+{
+// Integration of Mathieson.
+// This is the answer to electrostatic problem of charge distrubution in MWPC described elsewhere. (NIM A370(1988)602-603)
+// Arguments: x,y- position of the center of Mathieson distribution
+// Returns: a charge fraction [0-1] imposed into the pad
+ Double_t shift1 = -LorsY()+0.5*AliHMPIDParam::SizePadY();
+ Double_t shift2 = -LorsY()-0.5*AliHMPIDParam::SizePadY();
+
+ Double_t uy1=AliHMPIDParam::SqrtK3y()*TMath::TanH(AliHMPIDParam::K2y()*(y+shift1)/AliHMPIDParam::PitchAnodeCathode());
+ Double_t uy2=AliHMPIDParam::SqrtK3y()*TMath::TanH(AliHMPIDParam::K2y()*(y+shift2)/AliHMPIDParam::PitchAnodeCathode());
+
+ return AliHMPIDParam::K4y()*(TMath::ATan(uy2)-TMath::ATan(uy1));
+
+}
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+Double_t AliHMPIDDigit::IntMathieson(Double_t x,Double_t y)const
+{
+// Integration of Mathieson.
// This is the answer to electrostatic problem of charge distrubution in MWPC described elsewhere. (NIM A370(1988)602-603)
// Arguments: x,y- position of the center of Mathieson distribution
// Returns: a charge fraction [0-1] imposed into the pad
- const Float_t kSqrtK3=0.77459667,k2=0.962,k4=0.379;
- Float_t ux1=kSqrtK3*TMath::TanH(k2*(x-LorsX()+0.5*SizePadX())/0.425);
- Float_t ux2=kSqrtK3*TMath::TanH(k2*(x-LorsX()-0.5*SizePadX())/0.425);
- Float_t uy1=kSqrtK3*TMath::TanH(k2*(y-LorsY()+0.5*SizePadY())/0.425);
- Float_t uy2=kSqrtK3*TMath::TanH(k2*(y-LorsY()-0.5*SizePadY())/0.425);
- return 4*k4*(TMath::ATan(ux2)-TMath::ATan(ux1))*k4*(TMath::ATan(uy2)-TMath::ATan(uy1));
+ Double_t xm = IntPartMathiX(x);
+ Double_t ym = IntPartMathiY(y);
+ return 4*xm*ym;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
void AliHMPIDDigit::Raw(UInt_t &w32,Int_t &ddl,Int_t &r,Int_t &d,Int_t &a)const
// Returns: none
Int_t y2a[6]={5,3,1,0,2,4};
- ddl=2*Ch()+Pc()%2; //DDL# 0..13
- Int_t tmp=1+Pc()/2*8+PadPcY()/6; r=(Pc()%2)? 25-tmp:tmp; //row r=1..24
- d=1+PadPcX()/8; //DILOGIC# 1..10
- a=y2a[PadPcY()%6]+6*(PadPcX()%8); //ADDRESS 0..47
-
- w32=0;
- AliBitPacking::PackWord((UInt_t)fQ,w32, 0,11); // 0000 0rrr rrdd ddaa aaaa qqqq qqqq qqqq Qdc bits (00..11) counts (0..4095)
- AliBitPacking::PackWord( a ,w32,12,17); // 3322 2222 2222 1111 1111 1000 0000 0000 DILOGIC address bits (12..17) counts (0..47)
- AliBitPacking::PackWord( d ,w32,18,21); // 1098 7654 3210 9876 5432 1098 7654 3210 DILOGIC number bits (18..21) counts (1..10)
- AliBitPacking::PackWord( r ,w32,22,26); // Row number bits (22..26) counts (1..24)
+ ddl=2*Ch()+Pc()%2; //DDL# 0..13
+ Int_t tmp=1+Pc()/2*8+PadPcY()/6; r=(Pc()%2)? tmp:25-tmp; //row r=1..24
+ d=1+PadPcX()/8; //DILOGIC# 1..10
+// d=AliHMPIDRawStream::kNDILOGICAdd+1-d; ////flip according to Paolo (2-9-2008)
+ d=10+1-d; ////flip according to Paolo (2-9-2008)
+ a=y2a[PadPcY()%6]+6*(7-PadPcX()%8); //ADDRESS 0..47
+
+ w32=0;
+ if(r<1 || r>24 || d<1 || d>10 || a<0 || a>47) {w32=0;ddl=-1;r=-1;d=-1;a=-1; return;} //clm: the assert is removed not to break the reconstruction code
+ AliBitPacking::PackWord((UInt_t)fQ,w32, 0,11); // 0000 0rrr rrdd ddaa aaaa qqqq qqqq qqqq Qdc bits (00..11) counts (0..4095)
+ AliBitPacking::PackWord( a ,w32,12,17); // 3322 2222 2222 1111 1111 1000 0000 0000 DILOGIC address bits (12..17) counts (0..47)
+ AliBitPacking::PackWord( d ,w32,18,21); // 1098 7654 3210 9876 5432 1098 7654 3210 DILOGIC number bits (18..21) counts (1..10)
+ AliBitPacking::PackWord( r ,w32,22,26); // Row number bits (22..26) counts (1..24)
+ 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
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-void AliHMPIDDigit::Raw(UInt_t w32,Int_t ddl)
-{
-// Converts a given raw data word to a digit
-// Arguments: w32 - 32 bits raw data word
-// ddl - DDL idx 0 1 2 3 4 ... 13
-// Returns: none
- Int_t a2y[6]={3,2,4,1,5,0};//pady for a given address (for single DILOGIC chip)
- Int_t r = AliBitPacking::UnpackWord(w32,22,26); assert(1<=r&&r<=24); // Row number (1..24)
- Int_t d = AliBitPacking::UnpackWord(w32,18,21); assert(1<=d&&d<=10); // 3322 2222 2222 1111 1111 1000 0000 0000 DILOGIC number (1..10)
- Int_t a = AliBitPacking::UnpackWord(w32,12,17); assert(0<=a&&a<=47); // 1098 7654 3210 9876 5432 1098 7654 3210 DILOGIC address (0..47)
- Int_t q = AliBitPacking::UnpackWord(w32, 0,11); assert(0<=q&&q<=4095); // 0000 0rrr rrdd ddaa aaaa qqqq qqqq qqqq Qdc (0..4095)
- Int_t ch=ddl/2;
- Int_t tmp=(r-1)/8; Int_t pc=(ddl%2)? 5-2*tmp:2*tmp;
- Int_t px=(d-1)*8+a/6;
- tmp=(ddl%2)?(24-r):r-1; Int_t py=6*(tmp%8)+a2y[a%6];
- fPad=Abs(ch,pc,px,py);fQ=q;
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Bool_t AliHMPIDDigit::Set(Int_t ch,Int_t pc,Int_t px,Int_t py,Float_t qdc,Int_t tid)
+Bool_t AliHMPIDDigit::Set(Int_t ch,Int_t pc,Int_t px,Int_t py,Int_t tid)
{
// Manual creation of digit
// Arguments: ch,pc,px,py,qdc,tid
-// Returns: none
- if(px<kMinPx || px>kMaxPx) return kTRUE;
- if(py<kMinPy || py>kMaxPy) return kTRUE;
+// Returns: kTRUE if wrong digit
+ if(ch<AliHMPIDParam::kMinCh || ch>AliHMPIDParam::kMaxCh) return kTRUE;
+ if(pc<AliHMPIDParam::kMinPc || pc>AliHMPIDParam::kMaxPc) return kTRUE;
+ if(px<AliHMPIDParam::kMinPx || px>AliHMPIDParam::kMaxPx) return kTRUE;
+ if(py<AliHMPIDParam::kMinPy || py>AliHMPIDParam::kMaxPy) return kTRUE;
+
- fPad=Abs(ch,pc,px,py);fQ=qdc;fTracks[0]=tid;
+ fPad=AliHMPIDParam::Abs(ch,pc,px,py);fTracks[0]=tid;
+ fQ=0;
return kFALSE;
}
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
#endif