/* 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"
-class AliHMPIDHit; //Hit2Sdi()
class TClonesArray; //Hit2Sdi()
-
+
class AliHMPIDDigit :public AliDigit //TObject-AliDigit-AliHMPIDDigit
{
public:
- enum EAbsPad {kChAbs=100000000,kPcAbs=1000000,kPadAbsX=1000,kPadAbsY=1}; //absolute pad number structure
- enum ERawData{kDilX=8,kDilY=6,kNdil=10,kNrow=24,kNddls=14}; //RAW data structure
- enum EPadData{kPcX=2,kPcY=3,kPad1=0,kPadPcX=80,kPadPcY=48,kPadAllX=kPadPcX*kPcX,kPadAllY=kPadPcY*kPcY,kPcAll=kPcX*kPcY,kPadAll=kPadAllX*kPadAllY}; //Segmentation structure
- enum EPadShif{kC=0,kU=1,kUR=2,kR=3,kDR=4,kD=5,kDL=6,kL=7,kUL=8};
+
//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
- inline AliHMPIDDigit(Int_t c,Float_t q,Int_t t,Float_t x,Float_t y,Int_t f=0); //sdigit ctor
- virtual ~AliHMPIDDigit() {} //dtor
+ 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 ) {} //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()
inline Int_t Compare (const TObject *pObj )const; //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*kChAbs+s*kPcAbs+x*kPadAbsX+y*kPadAbsY; } //(ch,pc,padx,pady)-> abs pad
- static Int_t A2C (Int_t pad ) {return pad/kChAbs; } //abs pad -> chamber
- static Int_t A2P (Int_t pad ) {return pad%kChAbs/kPcAbs; } //abs pad -> pc
- static Int_t A2X (Int_t pad ) {return pad%kPcAbs/kPadAbsX; } //abs pad -> pad X
- static Int_t A2Y (Int_t pad ) {return pad%kPadAbsX; } //abs pad -> pad Y
- Int_t Addr ( )const{Int_t mapY2A[kDilY]={5,3,1,0,2,4}; return mapY2A[A2Y(fPad)%kDilY]+kDilY*(A2X(fPad)%kDilX);}//raw a=0..47
- 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
- Int_t Dilogic ( )const{return 10-PadX()/kDilX; } //raw d=1..10
- static void DrawPc (Bool_t isFill=kTRUE ); //draw PCs
- Int_t Ddl ( )const{return (PadX()<kPadPcX) ? 2*Ch() : 2*Ch()+1; } //DDL number 0..13
- static Float_t Hit2Sdi (AliHMPIDHit *pHit,TClonesArray *); //hit -> 9 sdigits, returns total QDC
- static Bool_t IsOverTh (Float_t q ) {return q > 6; } //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 pc boundary?
- inline static Bool_t IsInDead (Float_t x,Float_t y ); //is point in dead area?
- Float_t LorsX ( )const{return (PadX()+0.5)*SizePadX()+(Pc()%2)*(SizePcX()+SizeDead());} //center of the pad x, [cm]
- Float_t LorsY ( )const{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 PadX ( )const{return A2X(fPad);} //x position of the pad
- Int_t PadY ( )const{return A2Y(fPad);} //y postion of the pad
+
+ 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 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 Float_t Mathieson (Float_t x )const; //Mathieson distribution
+ inline Float_t IntPartMathi(Float_t z, Int_t axis )const; //integral in 1-dim of Mathieson
+ inline Float_t IntMathieson(Float_t x,Float_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 AliHMPIDParam::A2P(fPad);} //PC position number
Float_t Q ( )const{return fQ;} //charge, [QDC]
- Int_t Pc ( )const{return A2P(fPad);} //PC position number
- static void PrintSize ( ); //print all segmentation sizes
- inline Int_t Raw (UInt_t &w32 )const; //raw
- Int_t Row ( )const{Int_t r=1+Pc()/2*8+PadY()/kDilY; return (Pc()%2)?kNrow-r+1:r;} //row r=1..24
- void Set (Int_t c,Int_t s,Int_t x,Int_t y) {fPad=Abs(c,s,x,y);} //set new digit
- void ReadRaw (Int_t ddl,Int_t r,Int_t d,Int_t a){Int_t mapA2Y[kDilY]={3,2,4,1,5,0};fPad=Abs(ddl/2,ddl%7,d*kDilX+a/kDilY,r*kDilY+mapA2Y[a%kDilY]);} //from raw
- inline void ReadRaw (Int_t ddl,UInt_t w32 ); //read raw word
-
- static Float_t SizeAllX ( ) {return SizePadX()*kPadAllX+SizeDead();} //all PCs size x, [cm]
- static Float_t SizeAllY ( ) {return SizePadY()*kPadAllY+2*SizeDead();} //all PCs size y, [cm]
- static Float_t SizeArea ( ) {return SizePcX()*SizePcY()*kPcAll;} //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 SizePadX()*kPadPcX;} //PC size x, [cm]
- static Float_t SizePcY ( ) {return SizePadY()*kPadPcY;} //PC size y, [cm]
- static Float_t SizeWin ( ) {return 0.5;}
- static Float_t SizeRad ( ) {return 1.5;}
- static void TestSeg ( ); //test segmentation
- void Zoom ( );
-protected: //AliDigit has fTracks[3]
- Int_t fPad; //absolute pad number is chamber*kCham
- Float_t fQ; //QDC value, fractions are permitted for summable procedure
- ClassDef(AliHMPIDDigit,4) //HMPID digit class
-};//class AliHMPIDDigitN
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-AliHMPIDDigit::AliHMPIDDigit(Int_t c,Float_t q,Int_t t,Float_t x,Float_t y,Int_t flag):AliDigit(),fPad(Abs(-1,-1,-1,-1)),fQ(-1)
-{
-// Creation of sdigit
-// Arguments: c- chamber
-// q- total QDC
-// t -TID
-// x,y - hit position, LORS
-// Returns: none
- Int_t pc,padx,pady;
- if (x>= 0 && x<= SizePcX() ) {pc=0; padx=Int_t( x / SizePadX());}//PC 0 or 2 or 4
- else if(x>=SizePcX()+SizeDead() && x<= SizeAllX() ) {pc=1; padx=Int_t((x- SizePcX()- SizeDead()) / SizePadX());}//PC 2 or 4 or 6
- else return;
- if (y>= 0 && y<= SizePcY() ) { pady=Int_t( y / SizePadY());}//PC 0 or 1
- else if(y>=SizePcY()+SizeDead() && y<=2*SizePcY()+SizeDead() ) {pc+=2;pady=Int_t((y- SizePcY()- SizeDead()) / SizePadY());}//PC 2 or 3
- else if(y>=SizeAllY()-SizePcY() && y<= SizeAllY() ) {pc+=4;pady=Int_t((y-2*SizePcY()-2*SizeDead()) / SizePadY());}//PC 4 or 5
- else return;
-
- switch(flag){
- case kUL:padx--;pady++;break; case kU:pady++;break; case kUR:padx++; pady++;break;
-
- case kL: padx--; break; case kC: break; case kR:padx++; break;
-
- case kDL:padx--;pady--;break; case kD:pady--;break; case kDR:padx++; pady--;break;
- }
- if(padx<0 || padx>=kPadPcX) return;
- if(pady<0 || pady>=kPadPcY) return;
- fPad=Abs(c,pc,padx,pady);
- fQ=q*Mathieson(x,y);
- fTracks[0]=t;
-}
+ 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 Bool_t Raw (UInt_t w32,Int_t ddl,AliRawReader *pRR); //(w32,ddl)->digit
+ inline void Raw (Int_t ddl,Int_t r,Int_t d,Int_t a); //raw->abs pad number
+ 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;} //manual creation
+ void SetNsig (Int_t sigmas ) {AliHMPIDParam::fgSigmas=sigmas;} //set n sigmas
+ static void WriteRaw (TObjArray *pDigLst ); //write as raw stream
+ enum EHMPIDRawError {
+ kInvalidRawDataWord = 1
+ };
+
+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 AliHMPIDDigit
+
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
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.
// Retunrs: -1 if AbsPad less then in pObj, 1 if more and 0 if they are the same
if (fPad==((AliHMPIDDigit*)pObj)->Pad()) return 0;
else if(fPad >((AliHMPIDDigit*)pObj)->Pad()) return 1;
- else return -1;
+ else return -1;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Bool_t AliHMPIDDigit::IsInDead(Float_t x,Float_t y)
+
+Float_t AliHMPIDDigit::Mathieson(Float_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
-
- if(x>SizePcX() && x<SizePcX()+SizeDead()) return kTRUE; //in dead zone along x
+// 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
+ Float_t kK1=0.28278795,kK2=0.96242952, kSqrtK3 =0.77459667, kD=0.445;
+ Float_t lambda = x/kD;
+ Float_t a=1-TMath::TanH(kK2*lambda)*TMath::TanH(kK2*lambda);
+ Float_t b=1+kSqrtK3*kSqrtK3*TMath::TanH(kK2*lambda)*TMath::TanH(kK2*lambda);
+ Float_t mathi = kK1*a/b;
+ return mathi;
+}
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+Float_t AliHMPIDDigit::IntPartMathi(Float_t z, Int_t axis)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
+ Float_t shift1,shift2;
+ if(axis==1) {
+ shift1 = -LorsX()+0.5*AliHMPIDParam::SizePadX();
+ shift2 = -LorsX()-0.5*AliHMPIDParam::SizePadX();
+ } else {
+ shift1 = -LorsY()+0.5*AliHMPIDParam::SizePadY();
+ shift2 = -LorsY()-0.5*AliHMPIDParam::SizePadY();
+ }
+
+ Float_t kK2=0.96242952, kSqrtK3 =0.77459667, kK4=0.37932926, kD=0.445;
+
+ Float_t ux1=kSqrtK3*TMath::TanH(kK2*(z+shift1)/kD);
+ Float_t ux2=kSqrtK3*TMath::TanH(kK2*(z+shift2)/kD);
- 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;
+ return kK4*(TMath::ATan(ux2)-TMath::ATan(ux1));
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Float_t AliHMPIDDigit::Mathieson(Float_t x,Float_t y)const
+
+Float_t AliHMPIDDigit::IntMathieson(Float_t x,Float_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));
+ Float_t xm = IntPartMathi(x,1);
+ Float_t ym = IntPartMathi(y,2);
+ return 4*xm*ym;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Int_t AliHMPIDDigit::Raw(UInt_t &w32)const
+void AliHMPIDDigit::Raw(UInt_t &w32,Int_t &ddl,Int_t &r,Int_t &d,Int_t &a)const
{
// Convert digit structure to raw word format
-// Arguments: 32 bits raw word to fill
-// Returns: DDL ID where to write this digit
- 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( Addr() ,w32,12,17); // 3322 2222 2222 1111 1111 1000 0000 0000 DILOGIC address bits (12..17) counts (0..47)
- AliBitPacking::PackWord( Dilogic(),w32,18,21); // 1098 7654 3210 9876 5432 1098 7654 3210 DILOGIC number bits (18..21) counts (1..10)
- AliBitPacking::PackWord( Row() ,w32,22,26); // Row number bits (22..26) counts (1..24)
- return Ddl(); //ddl 0..13 where to write this digit
+// Arguments: w32,ddl,r,d,a where to write the results
+// 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;
+ //Protection for charge > 4095
+ AliBitPacking::PackWord((fQ>4095)?4095:(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)
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-void AliHMPIDDigit::ReadRaw(Int_t ddl,UInt_t w32)
+Bool_t AliHMPIDDigit::Raw(UInt_t w32,Int_t ddl, AliRawReader *pRR)
{
// 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
- fQ = AliBitPacking::UnpackWord(w32, 0,11); // 0000 0rrr rrdd ddaa aaaa qqqq qqqq qqqq Qdc bits (00..11) counts (0..4095)
- UInt_t a = AliBitPacking::UnpackWord(w32,12,17); // 3322 2222 2222 1111 1111 1000 0000 0000 DILOGIC address bits (12..17) counts (0..47)
- UInt_t d = AliBitPacking::UnpackWord(w32,18,21); // 1098 7654 3210 9876 5432 1098 7654 3210 DILOGIC number bits (18..21) counts (1..10)
- UInt_t r = AliBitPacking::UnpackWord(w32,22,26); // Row number bits (22..26) counts (1..24)
- ReadRaw(ddl,r,d,a);
+ 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)
+ if (r<1 || r>24 || d<1 || d>10 || a<0 || a>47 || q<0 || q>4095) {
+ AliWarning(Form("Invalid raw data word %x",w32));
+ pRR->AddMajorErrorLog(kInvalidRawDataWord,Form("w=%x",w32));
+ return kFALSE;
+ }
+ Raw(ddl,r,d,a);
+ fQ=q;
+ return kTRUE;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+void AliHMPIDDigit::Raw(Int_t ddl,Int_t r,Int_t d,Int_t a)
+{
+ assert(0<=ddl&&ddl<=13); assert(1<=r&&r<=24); assert(1<=d&&d<=10); assert(0<=a&&a<=47);
+ Int_t a2y[6]={3,2,4,1,5,0};//pady for a given address (for single DILOGIC chip)
+ 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=AliHMPIDParam::Abs(ch,pc,px,py);
+}
+
+
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+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: kTRUE if wrong digit
+ if(px<AliHMPIDParam::kMinPx || px>AliHMPIDParam::kMaxPx) return kTRUE;
+ if(py<AliHMPIDParam::kMinPy || py>AliHMPIDParam::kMaxPy) return kTRUE;
+
+ fPad=AliHMPIDParam::Abs(ch,pc,px,py);fTracks[0]=tid;
+ fQ=0;
+ return kFALSE;
+}
#endif
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