#ifndef AliRICHParam_h
#define AliRICHParam_h
-#include <TNamed.h> //base class
-#include <TMath.h> //QdcTot()
-#include <TVector.h> //old style
-#include <TVector2.h>
-#include <TVector3.h>
-#include <TRandom.h>
-#include <TClonesArray.h> //Hit2SDigs()
-#include <AliLog.h>
-#include <TGeoMatrix.h> //Mars2Lors() Lors2Mars()
-#include <TF1.h> //fields
-#include <TF2.h> //fields
-#include "AliRICHDigit.h" //Hit2Sdigs()
+#include <TNamed.h> //base class
#include <TGeoManager.h> //Instance()
-
-static const int kNchambers=7; //number of RICH chambers
-static const int kNpadsX = 160; //number of pads along X in single chamber
-static const int kNpadsY = 144; //number of pads along Y in single chamber
-static const int kNsectors=6; //number of sectors per chamber
-
+#include <TVector3.h> //Lors2Mars() Mars2Lors()
+
static const int kCerenkov=50000050; //??? go to something more general like TPDGCode
static const int kFeedback=50000051; //??? go to something more general like TPDGCode
// to construct the geometry, to define segmentation and to provide response model
// In future will also provide all the staff needed for alignment and calibration
-
class AliRICHParam :public TNamed
{
public:
//ctor&dtor
- virtual ~AliRICHParam() {delete fIdxC6F14;fgInstance=0;}
-//test methodes
+ virtual ~AliRICHParam() {for(Int_t i=0;i<7;i++) delete fM[i]; delete fgInstance; fgInstance=0;}
void Print(Option_t *opt="") const; //print current parametrization
- static void DrawAxis();
- static void DrawSectors();
-//flags staff
static inline AliRICHParam* Instance(); //pointer to AliRICHParam singleton
- static void SetWireSag(Bool_t a) {fgIsWireSag=a;}
- static Bool_t IsWireSag() {return fgIsWireSag;}
- static void SetResolveClusters(Bool_t a) {fgIsResolveClusters=a;}
- static Bool_t IsResolveClusters() {return fgIsResolveClusters;}
+
+ Double_t MeanIdxRad () {return 1.29204;}//???????????
+ Double_t MeanIdxWin () {return 1.57819;}//???????????
static Int_t Stack(Int_t evt=-1,Int_t tid=-1); //Print stack info for event and tid
static Int_t StackCount(Int_t pid,Int_t evt); //Counts stack particles of given sort in given event
- static inline Double_t ErrLoc (Double_t thetaC,Double_t phiC,Double_t thetaT,Double_t phiT,Double_t beta);
- static inline Double_t ErrGeom (Double_t thetaC,Double_t phiC,Double_t thetaT,Double_t phiT,Double_t beta);
- static inline Double_t ErrCrom (Double_t thetaC,Double_t phiC,Double_t thetaT,Double_t phiT,Double_t beta);
- static inline TVector3 SigmaSinglePhotonFormula(Double_t thetaC,Double_t phiC,Double_t thetaT,Double_t phiT,Double_t beta);
-//Geometrical properties
- static Int_t NpadsX () {return kNpadsX;} //number of pads along X in chamber
- static Int_t NpadsY () {return kNpadsY;} //number of pads along Y in chamber
- static Int_t NpadsXsec () {return NpadsX()/2;} //number of pads along X in sector
- static Int_t NpadsYsec () {return NpadsY()/3;} //number of pads along Y in sector
-
- static Double_t AnodPitch () {return PadSizeY()/2;} //cm between anode wires
- static Double_t AnodZ () {return 7.806;} //Z positon of anod plane in LORS of the chamber, [cm]
- static Double_t CathPitch () {return PadSizeY()/4;} //dist between cathode wires [cm]
- static Double_t CollPitch () {return 0.5;} //dist between collection wires [cm]
- static Double_t DeadZone () {return 2.6;} //dead zone thickness [cm]
- static Double_t PadSizeX () {return 0.8;} //pad size x [cm]
- static Double_t PadSizeY () {return 0.84;} //pad size y [cm]
- static Double_t PcSizeX () {return NpadsX()*PadSizeX()+DeadZone();} //PC size x [cm]
- static Double_t PcSizeY () {return NpadsY()*PadSizeY()+2*DeadZone();} //PC size y [cm]
- static Double_t Pc2Cath () {return 0.445;} //dist between PC entrance plane and cathode wires plane [cm]
- static Double_t Pc2Win () {return PcZ();} //dist between PC entrance plane and window exit plane [cm]
- static Double_t PcZ () {return 8.0; } //Z positon of PC entrance plane in LORS of the chamber [cm]
- static Double_t RadThick () {return 1.5;} //radiator thickness [cm]
- static Double_t RadZ () {return -2.0; } //Z positon of radiator entrance plane in LORS of the chamber [cm]
- static Double_t SecSizeX () {return NpadsX()*PadSizeX()/2;} //sector size x [cm]
- static Double_t SecSizeY () {return NpadsY()*PadSizeY()/3;} //sector size y [cm ]
- static Double_t WinThick () {return 0.5;} //radiator window thickness [cm]
-
-
//trasformation methodes
- inline TVector3 Lors2Mars (Int_t c,Double_t x,Double_t y,Int_t p=kPc); //LORS->MARS transform of point [cm] for chamber c and plane p
- inline TVector2 Mars2Lors (Int_t c,const TVector3 &x ,Int_t p=kPc); //MARS->LORS transform of point [cm] for chamber c and plane p
-
- static inline TVector3 Lors2MarsOld (Int_t c,Double_t x,Double_t y,Int_t p); //LORS->MARS transform of position (cm) for chamber c and plane p
- static inline TVector2 Mars2LorsOld (Int_t c,const TVector3 &x,Int_t p ); //MARS->LORS transform of position (cm) for chamber c and plane p
- static inline TVector3 Mars2LorsVec (Int_t c,const TVector3 &p ); //MARS->LORS transform of vector for chamber c
- static inline TVector3 Center (Int_t c,Int_t p ); //Center of plane p of chamber c in MARS (cm)
- static inline TVector3 Norm (Int_t c ); //Norm vector to the chamber c in MARS (cm)
- static inline TGeoMatrix*Matrix (Int_t iCh, Int_t iPlane ); //TGeoMatrix for the given chamber plain
-
- static Int_t Pad2Cha (Int_t pad ){return pad/100000000; }//abs pad -> chamber
- static Int_t Pad2Sec (Int_t pad ){return pad%100000000/1000000; }//abs pad -> sector
- static Int_t Pad2PadX (Int_t pad ){return pad%1000000/1000; }//abs pad -> pad x
- static Int_t Pad2PadY (Int_t pad ){return pad%1000000%100; }//abs pad -> pad y
- static Int_t PadAbs (Int_t c,Int_t s,Int_t x,Int_t y){return 100000000*c+1000000*s+1000*x+y; }//(c,s,x,y) -> abs pad
- static inline TVector2 Pad2Loc (Int_t pad ); //abs pad ->LORS
- static inline TVector2 Pad2Loc (TVector pad ); //pad -> LORS returns center of the pad
- static TVector2 Pad2Loc (Int_t x,Int_t y ){TVector pad(2);pad[0]=x;pad[1]=y;return Pad2Loc(pad);}//return center of the pad (x,y)
- static inline TVector Loc2Area (const TVector2 &x2 ); //pads area affected by hit x2. area is LeftDown-RightUp pad numbers
- static inline Int_t Loc2Sec (const TVector2 &x2 ); //LORS -> sector
- static Int_t Loc2Sec (Double_t x,Double_t y ){return Loc2Sec(TVector2(x,y));} //LORS -> sector
- static inline TVector Loc2Pad (const TVector2 &x2 ); //LORS -> pad
- static TVector Loc2Pad (Double_t x,Double_t y ){return Loc2Pad(TVector2(x,y));} //LORS -> pad
- static inline Int_t Pad2Sec (const TVector &pad ); //pad -> sector
- static inline Int_t PadNeighbours (Int_t iPadX,Int_t iPadY,Int_t aListX[4],Int_t aListY[4]); //pad -> list of it neighbours
- static Bool_t IsAccepted (const TVector2 &x2 ){return ( x2.X()>=0 && x2.X()<=PcSizeX() && x2.Y()>=0 && x2.Y()<=PcSizeY() ) ? kTRUE:kFALSE;}
-//optical properties methodes
- static Float_t EckovMean ( ){return 6.766e-9;} //mean Ckov energy according to the total trasmission curve
- static Float_t EckovMin ( ){return fEckovMin;} //min photon energy [GeV] defined in optical curves
- static Float_t EckovMax ( ){return fEckovMax;} //min photon energy [GeV] defined in optical curves
-
- static Float_t AbsCH4 (Float_t gev ); //AbsLen [cm]=f(Eckov) [GeV] for CH4 used as amp gas
- static Float_t AbsGel (Float_t gev ){return fgAbsGel.Eval(gev);} //AbsLen [cm]=f(Eckov) [GeV] for aerogel
- static Float_t AbsAir (Float_t gev ){return fgAbsAir.Eval(gev);} //AbsLen [cm]=f(Eckov) [GeV] for air
-
- Float_t IdxC6F14 (Float_t gev ){return fIdxC6F14->Eval(gev,fIdxC6F14->GetUniqueID());} //n=f(Eckov) [GeV] for C6H14 used as radiator
- static Float_t IdxSiO2 (Float_t gev ){return fgIdxSiO2 .Eval(gev);} //n=f(Eckov) [GeV] for SiO2 used as window TDR p.35
- static Float_t IdxCH4 (Float_t gev ){return fgIdxCH4 .Eval(gev);} //n=f(Eckov) [GeV] for CF4
- static Float_t IdxG24 (Float_t gev ){return fgIdxG24 .Eval(gev);} //n=f(Eckov) [GeV] for aerogel @1.024
- static Float_t IdxG26 (Float_t gev ){return fgIdxG26 .Eval(gev);} //n=f(Eckov) [GeV] for aerogel @1.026
- static Float_t IdxG28 (Float_t gev ){return fgIdxG28 .Eval(gev);} //n=f(Eckov) [GeV] for aerogel @1.028
- static Float_t IdxG30 (Float_t gev ){return fgIdxG30 .Eval(gev);} //n=f(Eckov) [GeV] for aerogel @1.030
- static Float_t IdxAir (Float_t gev ){return fgIdxAir .Eval(gev);} //n=f(Eckov) [GeV] for air
- static Float_t IdxCF4 (Float_t gev ){return fgIdxCF4 .Eval(gev);} //n=f(Eckov) [GeV] for CF4
-
- static Float_t QeApd (Float_t gev ){return fgQeApd .Eval(gev);} //Q.E.=f(Eckov) [GeV] for APD
- static Float_t QeCsI (Float_t gev ){return fgQeCsI .Eval(gev);} //Q.E.=f(Eckov) [GeV] for CsI
-
- void CdbRead (Int_t run,Int_t version ); //read all calibration information for requested run
-
- static Double_t IonisationPotential() {return 26.0e-9;} //for CH4 in GeV taken from ????
- static TVector2 MathiesonDelta() {return TVector2(5*0.18,5*0.18);} //area of 5 sigmas of Mathieson distribution (cm)
- static Int_t MaxQdc() {return 4095;} //QDC number of channels
-
-
- static Int_t QthMIP() {return 100;}
- static Double_t DmatchMIP() {return 1.;}
- static Double_t PmodMax() {return 6.5;}
- static Int_t HV(Int_t sector) {if (sector>=1 && sector <=6) return fgHV[sector-1]; else return -1;} //high voltage for this sector
- static void SetHV(Int_t sector,Int_t hv){fgHV[sector-1]=hv;}
-//charge response methodes
- inline static Double_t Mathieson(Double_t x1,Double_t x2,Double_t y1,Double_t y2); //Mathienson integral over given limits
-
- inline static Double_t GainSag(Double_t x,Int_t sector); //gain variations in %
- static Double_t Gain(const TVector2 &x2){//gives chamber gain in terms of QDC channels for given point in local ref system
- if(fgIsWireSag) return QdcSlope(Loc2Sec(x2))*(1+GainSag(x2.X(),Loc2Sec(x2))/100);
- else return QdcSlope(Loc2Sec(x2));}
- inline static Double_t FracQdc(const TVector2 &x2,const TVector &pad); //charge fraction to pad from hit
- inline static Int_t TotQdc(TVector2 x2,Double_t e ); //total charge for Eloss (GeV) 0 for photons
- static Double_t QdcSlope(Int_t sec){switch(sec){case -1: return 0; default: return 33;}} //weight of electon in QDC channels
-
- static inline Int_t Lors2Pad (Double_t x,Double_t y ); //LORS (x,y) [cm] -> abs pad number
- static Double_t IonPot ( ){return 26.0e-9;} //for CH4 in GeV taken from ????
- static inline Int_t QdcTot (Int_t iPad,Double_t e ); //total QDC generated by Eloss or Etot [GeV]
- static inline Double_t QdcSag (Int_t iPad ); //mean QDC variation due to sagita [0,1]
- static Double_t QdcEle (Int_t iPad ){return fgIsWireSag?33*(1+QdcSag(iPad)):33;} //mean QDC per electron
- static inline Int_t Hit2SDigs (Int_t iPad, Double_t e,TClonesArray* pSDigLst); //hit->sdigits, returns Qtot
- static inline Int_t Hit2SDigs (TVector2 hit,Double_t e,TClonesArray* pSDigLst); //hit->sdigits, returns Qtot, old style
- static void TestHit2SDigs (Double_t x,Double_t y,Double_t e,Bool_t isNew=kFALSE); //test hit->sdigits
-
- inline static Bool_t IsOverTh(Int_t c,TVector pad,Double_t q); //is QDC of the pad registered by FEE
- static Int_t NsigmaTh() {return fgNsigmaTh;} //
- static Float_t SigmaThMean() {return fgSigmaThMean;} //QDC electronic noise mean
- static Float_t SigmaThSpread() {return fgSigmaThSpread;} //QDC electronic noise width
-
- static Double_t CogCorr(Double_t x) {return 3.31267e-2*TMath::Sin(2*TMath::Pi()/PadSizeX()*x) //correction of cluster CoG due to sinoidal
- -2.66575e-3*TMath::Sin(4*TMath::Pi()/PadSizeX()*x)
- +2.80553e-3*TMath::Sin(6*TMath::Pi()/PadSizeX()*x)+0.0070;}
- static void ReadErrFiles(); //Read Err file parameters
- TVector3 SigmaSinglePhoton(Int_t Npart, Double_t mom, Double_t theta, Double_t phi); //Find Sigma for single photon from momentum and particle id
- TVector3 SigmaSinglePhoton(Double_t thetaCer, Double_t theta, Double_t phi); //Fing sigma for single photon from thetacer
- static Double_t Interpolate(Double_t par[4][330],Double_t x, Double_t y, Double_t phi); //Find the error value from interpolation
-
- TVector3 ForwardTracing(TVector3 entranceTrackPoint,TVector3 vectorTrack, Double_t thetaC, Double_t phiC); //it traces foward a photon from Emission Point to PC
- static TVector3 PlaneIntersect(const TVector3 &lineDir,const TVector3 &linePoint,const TVector3 &planeNorm,const TVector3 &planePoint); //intersection between line and plane
- static Double_t SnellAngle(Float_t n1, Float_t n2, Float_t theta1); // Snell law
- static void AnglesInDRS(Double_t trackTheta,Double_t trackPhi,Double_t thetaCerenkov,Double_t phiCerenkov,Double_t &tout,Double_t &pout);//It finds photon angles in
- static Double_t AlphaFeedback(Int_t c,Int_t s) {c++;s++; return 0.02;} //for sector s of chamber c
-//test part
- static void Test() {TestSeg();TestTrans();TestResp();} //test all groups of methodes
- static void TestResp(); //test the response group of methodes
- static void TestSeg(); //test the segmentation group of methodes
- static void TestTrans(); //test the transform group of methodes
-
- static Double_t fgMass[5]; // mass array
- static Bool_t fgIsTestBeam; //test beam geometry instead of normal RICH flag
- enum EPlaneId {kCenter,kPc,kRad,kAnod,kNch=7}; //4 planes in chamber and total number of chambers
+ void Lors2Mars (Int_t c,Float_t x,Float_t y,Double_t *m,Int_t pl=kPc)const{Double_t z=0; switch(pl){case kPc:z=8.0;break; case kAnod:z=7.806;break; case kRad:z=-1.25; break;} Double_t l[3]={x-fX,y-fY,z}; fM[c]->LocalToMaster(l,m); }
+ TVector3 Lors2Mars (Int_t c,Float_t x,Float_t y, Int_t pl=kPc)const{Double_t m[3];Lors2Mars(c,x,y,m,pl); return TVector3(m); }//MRS->LRS
+ void Mars2Lors (Int_t c,Double_t *m,Float_t &x,Float_t &y )const{Double_t l[3];fM[c]->MasterToLocal(m,l);x=l[0]+fX;y=l[1]+fY;}//MRS->LRS
+ void Mars2LorsVec(Int_t c,Double_t *m,Float_t &th,Float_t &ph )const{Double_t l[3]; fM[c]->MasterToLocalVect(m,l); Float_t pt=TMath::Sqrt(l[0]*l[0]+l[1]*l[1]); th=TMath::ATan(l[3]/pt); ph=TMath::ATan(l[0]/pt);}
+ TVector3 Norm (Int_t c )const{Double_t n[3]; Norm(c,n); return TVector3(n); }//norm
+ void Norm (Int_t c,Double_t *n )const{Double_t l[3]={0,0,1};fM[c]->LocalToMasterVect(l,n); }//norm
+
+ enum EPlaneId {kPc,kRad,kAnod}; //3 planes in chamber
protected:
AliRICHParam(); //default ctor is protected to enforce it to be singleton
static AliRICHParam *fgInstance; //static pointer to instance of AliRICHParam singleton
-//optical curves
- static Double_t fEckovMin; //min Eckov
- static Double_t fEckovMax; //max Eckov
-
- TF2* fIdxC6F14; //n=f(Ephot,T) [GeV] for radiator freon C6F14
- static TF1 fgIdxSiO2; //n=f(Ephot) [GeV] for window quartz SiO2
- static TF1 fgIdxCH4; //n=f(Ephot) [GeV] for MWPC amp gas CF4
- static TF1 fgIdxAir; //n=f(Ephot) [GeV] for air
- static TF1 fgIdxC4F10; //n=f(Ephot) [GeV] for radiator C4F10
- static TF1 fgIdxCF4; //n=f(Ephot) [GeV] for radiator CF4
- static TF1 fgIdxG30; //n=f(Ephot) [GeV] for radiator aerogel @1.030
- static TF1 fgIdxG28; //n=f(Ephot) [GeV] for radiator aerogel @1.028
- static TF1 fgIdxG26; //n=f(Ephot) [GeV] for radiator aerogel @1.026
- static TF1 fgIdxG24; //n=f(Ephot) [GeV] for radiator aerogel @1.024
-
- static TF1 fgAbsC6F14; //abs len curve for radiator freon C6F14, cm versus GeV
- static TF1 fgAbsSiO2; //abs len curve for window quartz SiO2 , cm versus GeV
- static TF1 fgAbsCH4; //abs len curve for MWPC methane CF4 , cm versus GeV
- static TF1 fgAbsAir; //abs len curve for air, cm versus GeV
- static TF1 fgAbsC4F10; //abs len curve for radiator C4F10
- static TF1 fgAbsCF4; //abs len curve for radiator CF4
- static TF1 fgAbsGel; //abs len curve for gel, cm versus GeV
-
- static TF1 fgQeCsI; //QE=f(Ephot) [GeV] for MWPC PC CsI
- static TF1 fgQeApd; //QE=f(Ephot) [GeV] for APD
-
- static Bool_t fgIsWireSag; //wire sagitta ON/OFF flag
- static Bool_t fgIsResolveClusters; //declustering ON/OFF flag
- static Bool_t fgIsFeedback; //generate feedback photon?
-
- static Int_t fgHV[6]; //HV applied to anod wires
- static Int_t fgNsigmaTh; //n. of sigmas to cut for zero suppression
- static Float_t fgSigmaThMean; //sigma threshold value
- static Float_t fgSigmaThSpread; //spread of sigma
-
- static Double_t fgErrChrom[4][330]; //
- static Double_t fgErrGeom[4][330]; //
- static Double_t fgErrLoc[4][330]; //Chromatic, Geometric and Localization array to parametrize SigmaCerenkov
- TGeoHMatrix *fMatrix[kNchambers]; //poiners to matrices defining RICH chambers rotations-translations
- ClassDef(AliRICHParam,0) //RICH main parameters class
+ TGeoHMatrix *fM[7]; //poiners to matrices defining RICH chambers rotations-translations
+ Float_t fX; //x shift of LORS with respect to rotated MARS
+ Float_t fY; //y shift of LORS with respect to rotated MARS
+ ClassDef(AliRICHParam,0) //RICH main parameters class
};
-
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
AliRICHParam* AliRICHParam::Instance()
{
// Return pointer to the AliRICHParam singleton.
// Arguments: none
// Returns: pointer to the instance of AliRICHParam or 0 if no geometry
- if(!fgInstance&&gGeoManager) new AliRICHParam;
- else if(!gGeoManager) Printf("No geometry imported");
+ if(!fgInstance)
+ if(gGeoManager) new AliRICHParam;
+ else Printf("AliRICHParam> Error:: No geometry defined!");
return fgInstance;
}//Instance()
-//__________________________________________________________________________________________________
-Int_t AliRICHParam::PadNeighbours(Int_t iPadX,Int_t iPadY,Int_t listX[4],Int_t listY[4])
-{
-//Determines all the neighbouring pads for the given one (iPadX,iPadY). Returns total number of these pads.
-//Dead zones are taken into account, meaning pads from different sector are not taken.
-// 1
-// 2 3
-// 4
- Int_t nPads=0;
- if(iPadY!=NpadsY()&&iPadY!=2*NpadsYsec()&&iPadY!=NpadsYsec()){listX[nPads]=iPadX; listY[nPads]=iPadY+1; nPads++;} //1
- if(iPadX!=1&&iPadX!=NpadsXsec()+1) {listX[nPads]=iPadX-1; listY[nPads]=iPadY; nPads++;} //2
- if(iPadX!=NpadsXsec()&&iPadX!=NpadsX()) {listX[nPads]=iPadX+1; listY[nPads]=iPadY; nPads++;} //3
- if(iPadY!=1&&iPadY!=NpadsYsec()+1&&2*NpadsYsec()+1) {listX[nPads]=iPadX; listY[nPads]=iPadY-1; nPads++;} //4
-
- return nPads;
-}//Pad2ClosePads()
-//__________________________________________________________________________________________________
-Int_t AliRICHParam::Loc2Sec(const TVector2 &v2)
-{
-// Determines sector containing the given point. y ^ 5 6
-// | 3 4
-// | 1 2
-// -------> x
-// Arguments: v2- LORS position [cm]
-// Returns: sector code
- Double_t x0=0; Double_t x1=SecSizeX(); Double_t x2=SecSizeX()+DeadZone(); Double_t x3=PcSizeX();
- Double_t y0=0; Double_t y1=SecSizeY(); Double_t y2=SecSizeY()+DeadZone(); Double_t y3=2*SecSizeY()+DeadZone();
- Double_t y4=PcSizeY()-SecSizeY(); Double_t y5=PcSizeY();
-
- Int_t sector=-1;
- if (v2.X() >= x0 && v2.X() <= x1 ) sector=1;
- else if(v2.X() >= x2 && v2.X() <= x3 ) sector=2;
- else return -1;
-
- if (v2.Y() >= y0 && v2.Y() <= y1 ) ; //sectors 1 or 2
- else if(v2.Y() >= y2 && v2.Y() <= y3 ) sector+=2; //sectors 3 or 4
- else if(v2.Y() >= y4 && v2.Y() <= y5 ) sector+=4; //sectors 5 or 6
- else return -1;
- return sector;
-}//Loc2Sec(Double_t x, Double_t y)
-//__________________________________________________________________________________________________
-TVector AliRICHParam::Loc2Pad(const TVector2 &loc)
-{
-//Determines pad number TVector(padx,pady) containing the given point x2 defined in the chamber RS.
-//Pad count starts in lower left corner from 1,1 to 144,160 in upper right corner of a chamber.
-//y ^ 5 6
-// | 3 4
-// | 1 2
-// -------> x
- TVector pad(2);
- Int_t sec=Loc2Sec(loc);//trasforms x2 to sector reference system
- if(sec==-1) {pad[0]=pad[1]=-1; return pad;}
-//first we deal with x
- if(sec==1||sec==3||sec==5) pad[0]= Int_t( loc.X() / PadSizeX() )+1; //sector 1 or 3 or 5
- else pad[0]=NpadsX() - Int_t( (PcSizeX()-loc.X()) / PadSizeX() ) ; //sector 2 or 4 or 6
-//second deal with y
- if(sec==1||sec==2) pad[1]=Int_t( loc.Y() / PadSizeY())+1; //sector 1 or 2
- else if(sec==3||sec==4) pad[1]=Int_t( (loc.Y()-SecSizeY()-DeadZone()) / PadSizeY())+NpadsYsec()+1; //sector 3 or 4
- else pad[1]=NpadsY() - Int_t( (PcSizeY()-loc.Y()) / PadSizeY()); //sector 5 or 6
- return pad;
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Int_t AliRICHParam::Lors2Pad(Double_t x,Double_t y)
-{
-// Determines abs pad number containing the given point (x,y) defined in the chamber RS.
-// Pad count starts in lower left corner from 1,1 to 144,160 in upper right corner of a chamber.
-// y ^ 5 6
-// | 3 4
-// | 1 2
-// -------> x
- Int_t padx,pady;
- if (x>= 0 && x<= SecSizeX() ) padx= 1 + Int_t( x /PadSizeX() ); //sector 1 or 3 or 5
- else if(x>=SecSizeX()+DeadZone() && x<= PcSizeX() ) padx= NpadsX() - Int_t( (PcSizeX()-x)/PadSizeX() ); //sector 2 or 4 or 6
- else return -1; //dead zone or out of chamber
-
-
- if (y>= 0 && y<= SecSizeY() ) pady= 1 + Int_t( y /PadSizeY() ); //sector 1 or 2
- else if(y>=SecSizeY()+DeadZone() && y<=2*SecSizeY()+DeadZone() ) pady= 1 + NpadsYsec() + Int_t( (y-SecSizeY()-DeadZone()) / PadSizeY()); //sector 3 or 4
- else if(y>= PcSizeY()-SecSizeY() && y<= PcSizeY() ) pady= NpadsY() - Int_t( (PcSizeY()-y)/PadSizeY() ); //sector 5 or 6
- else return -1; //dead zone or out of chamber
-
- return AliRICHDigit::P2A(0,padx,pady);
-}//Lors2Pad()
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Int_t AliRICHParam::Pad2Sec(const TVector &pad)
-{
-//Determines sector containing the given pad.
- Int_t sector=-1;
- if (pad[0] >= 1 && pad[0] <= NpadsXsec() ) {sector=1;}
- else if(pad[0] > NpadsXsec() && pad[0] <= NpadsX() ) {sector=2;}
- else AliDebugClass(1,Form("Wrong pad (%3.0f,%3.0f)",pad[0],pad[1]));
-
- if (pad[1] >= 1 && pad[1] <= NpadsYsec() ) {}
- else if(pad[1] > NpadsYsec() && pad[1] <= 2*NpadsYsec() ) {sector+=2;}
- else if(pad[1] > 2*NpadsYsec() && pad[1] <= NpadsY() ) {sector+=4;}
- else AliDebugClass(1,Form("Wrong pad (%3.0f,%3.0f)",pad[0],pad[1]));
-
- return sector;
-}//Pad2Sec()
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-TVector2 AliRICHParam::Pad2Loc(TVector pad)
-{
-//Returns position of the center of the given pad in local system of the chamber (cm)
-// y ^ 5 6
-// | 3 4 sector numbers
-// | 1 2
-// -------> x
- Double_t x=-1,y=-1;
- if(pad[0] > 0 && pad[0] <= NpadsXsec())//it's 1 or 3 or 5
- x=(pad[0]-0.5)*PadSizeX();
- else if(pad[0] > NpadsXsec() && pad[0] <= NpadsX())//it's 2 or 4 or 6
- x=(pad[0]-0.5)*PadSizeX()+DeadZone();
- else
- AliDebugClass(1,Form("Wrong pad (%3.0f,%3.0f)",pad[0],pad[1]));
-
- if(pad[1] > 0 && pad[1] <= NpadsYsec())//it's 1 or 2
- y=(pad[1]-0.5)*PadSizeY();
- else if(pad[1] > NpadsYsec() && pad[1] <= 2*NpadsYsec())//it's 3 or 4
- y=(pad[1]-0.5)*PadSizeY()+DeadZone();
- else if(pad[1] > 2*NpadsYsec() && pad[1]<= NpadsY())//it's 5 or 6
- y=(pad[1]-0.5)*PadSizeY()+2*DeadZone();
- else
- AliDebugClass(1,Form("Wrong pad (%3.0f,%3.0f)",pad[0],pad[1]));
-
- return TVector2(x,y);
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-TVector2 AliRICHParam::Pad2Loc(Int_t pad)
-{
-// Converts absolute pad number to local position in LORS
-// LORS is a chamber reference system with origin in left-down coner looking from IP
-// Arguments: pad- absolute pad number
-// Returns: pad center position as TVector2 in PCRS
- TVector2 pos;
- pos.Set((Pad2PadX(pad)-0.5)*PadSizeX() , (Pad2PadY(pad)-0.5)*PadSizeY());//set to sector LORS
- return pos;
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Double_t AliRICHParam::GainSag(Double_t x,Int_t sector)
-{
-//Returns % of gain variation due to wire sagita.
-//All curves are parametrized as per sector basis, so x must be apriory transformed to the Sector RS.
-//Here x is a distance along wires.
- x-=SecSizeX()/2;
- if(x>SecSizeX()) x-=SecSizeX();
- switch(HV(sector)){
- case 2150: return 9e-6*TMath::Power(x,4)+2e-7*TMath::Power(x,3)-0.0316*TMath::Power(x,2)-3e-4*x+25.367;//%
- case 2100: return 8e-6*TMath::Power(x,4)+2e-7*TMath::Power(x,3)-0.0283*TMath::Power(x,2)-2e-4*x+23.015;
- case 2050: return 7e-6*TMath::Power(x,4)+1e-7*TMath::Power(x,3)-0.0254*TMath::Power(x,2)-2e-4*x+20.888;
- case 2000: return 6e-6*TMath::Power(x,4)+8e-8*TMath::Power(x,3)-0.0227*TMath::Power(x,2)-1e-4*x+18.961;
- default: return 0;
- }
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Double_t AliRICHParam::QdcSag(Int_t iPad)
-{
-// It was observed at BNL that wires are affected by gravitation field providing a significant sagita leading to the local electric field variation
-// which means that different pads produce different signals.
-// Arguments: iPad- absolute pad number
-// Returns: gain variation due to wire sagita 0 < QdcSag < 1.
-// Curves are parametrised in terms of distance x (cm) along wires having 0 on the left edge of the photocathode
- Double_t x=AliRICHDigit::P2X(iPad)*PadSizeX()-0.5*PadSizeX(); //center of the padx (count from 1)
- switch(HV(iPad)){
- case 2150: return 0.01*(9e-6*TMath::Power(x,4)+2e-7*TMath::Power(x,3)-0.0316*TMath::Power(x,2)-3e-4*x+25.367);//function is a fit in % so multiply by 0.01
- case 2100: return 0.01*(8e-6*TMath::Power(x,4)+2e-7*TMath::Power(x,3)-0.0283*TMath::Power(x,2)-2e-4*x+23.015);
- case 2050: return 0.01*(7e-6*TMath::Power(x,4)+1e-7*TMath::Power(x,3)-0.0254*TMath::Power(x,2)-2e-4*x+20.888);
- case 2000: return 0.01*(6e-6*TMath::Power(x,4)+8e-8*TMath::Power(x,3)-0.0227*TMath::Power(x,2)-1e-4*x+18.961);
- default: return 0;
- }
-}//QdcSag()
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Int_t AliRICHParam::QdcTot(Int_t iPad,Double_t e)
-{
-// Calculates the total charge produced by the hit. Method:
-// 1. number of electrons is calculated as energy lost in amp gas divided by ionisation potential (for photon only one electron as Etot is always less then ionization potential)
-// 2. each electron imposes a charge distributed as Poisson with QdcEle() mean. Different pads produce different means. See QdcEle().
-// Arguments: iPad- absolute pad number contaning the hit;
-// e- Eloss for mip in amplification gas or Etot for photon
-// Returns: charge parametrised in QDC channels.
- Int_t iNele=Int_t(e/IonPot()); if(iNele==0) iNele=1;//e < ion. pot. means it's photoelectron
- Double_t dQdc=0;
- for(Int_t i=1;i<=iNele;i++) dQdc+=-QdcEle(iPad)*TMath::Log(gRandom->Rndm());
- return Int_t(dQdc);
-}//QdcTot()
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Int_t AliRICHParam::TotQdc(TVector2 x2,Double_t eloss)
-{
-//Calculates the total charge produced by the eloss in point x2 (Chamber RS).
-//Returns this change parametrised in QDC channels, or 0 if the hit in the dead zone.
-//eloss=0 means photon which produces 1 electron only eloss > 0 for Mip
- if(Loc2Sec(x2)==-1) return 0; //hit in the dead zone
- Int_t iNelectrons=Int_t(eloss/IonisationPotential()); if(iNelectrons==0) iNelectrons=1;
- Double_t qdc=0;
- for(Int_t i=1;i<=iNelectrons;i++) qdc+=-Gain(x2)*TMath::Log(gRandom->Rndm());
- return Int_t(qdc);
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Double_t AliRICHParam::FracQdc(const TVector2 &x2,const TVector &pad)
-{
-//Calculates the charge fraction induced to given pad by the hit from the given point.
-//Integrated Mathieson distribution is used.
- TVector2 center2=Pad2Loc(pad);//gives center of requested pad
- Double_t normXmin=(x2.X()-center2.X()-PadSizeX()/2) /Pc2Cath();//parametrise for Mathienson
- Double_t normXmax=(x2.X()-center2.X()+PadSizeX()/2) /Pc2Cath();
- Double_t normYmin=(x2.Y()-center2.Y()-PadSizeY()/2) /Pc2Cath();
- Double_t normYmax=(x2.Y()-center2.Y()+PadSizeY()/2) /Pc2Cath();
-
-//requested pad might not belong to the sector of the given hit position, hence the check:
- return (Loc2Sec(x2)!=Pad2Sec(pad)) ? 0:Mathieson(normXmin, normYmin, normXmax, normYmax);
-}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Double_t AliRICHParam::Mathieson(Double_t x1,Double_t y1,Double_t x2,Double_t y2)
-{
-// This is the answer to electrostatic problem of charge distrubution in MWPC described elsewhere. (NIM A370(1988)602-603)
-// Arguments: x1- diff between center of distribution which is a hit position and left edge of interested pad divided by anod-cathode distance
-// x2- right edge of the pad
-// y1- up edge of the pad
-// y2- bottom edge of the pad
-// Returns: a charge fraction [0-1] imposed into the pad
- const Double_t kSqrtKx3=0.77459667;const Double_t kX2=0.962;const Double_t kX4=0.379;
- const Double_t kSqrtKy3=0.77459667;const Double_t kY2=0.962;const Double_t kY4=0.379;
-
- Double_t ux1=kSqrtKx3*TMath::TanH(kX2*x1);
- Double_t ux2=kSqrtKx3*TMath::TanH(kX2*x2);
- Double_t uy1=kSqrtKy3*TMath::TanH(kY2*y1);
- Double_t uy2=kSqrtKy3*TMath::TanH(kY2*y2);
- return 4*kX4*(TMath::ATan(ux2)-TMath::ATan(ux1))*kY4*(TMath::ATan(uy2)-TMath::ATan(uy1));
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-TVector AliRICHParam::Loc2Area(const TVector2 &x2)
-{
-// Calculates the area of disintegration for a given point. It's assumed here that this points lays on anode wire.
-// Area is a rectangulare set of pads defined by its left-down and right-up coners.
- TVector area(4);
- TVector pad=Loc2Pad(x2);
- area[0]=area[2]=pad[0]; area[1]=area[3]=pad[1];//area is just a pad fired
- if(pad[0]!=1 && pad[0]!= NpadsXsec()+1 ) area[0]--; //left down coner X
- if(pad[1]!=1 && pad[1]!= NpadsYsec()+1 && pad[1]!= 2*NpadsYsec()+1) area[1]--; //left down coner Y
- if(pad[0]!=NpadsXsec() && pad[0]!= NpadsX() ) area[2]++; //right up coner X
- if(pad[1]!=NpadsYsec() && pad[1]!= 2*NpadsYsec() && pad[1]!= NpadsY() ) area[3]++; //right up coner Y
- return area;
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Bool_t AliRICHParam::IsOverTh(Int_t ,TVector ,Double_t qdc)
-{
-// Checks if the current QDC is over threshold and FEE will save this value to data concentrator.
-// This is done on pad by pad level, so the pad pedestal map is to be used. ??????????????
-// Arguments:
-// Returns: true if QDC over treshold
- return (qdc>NsigmaTh()*(SigmaThMean()+(1.-2*gRandom->Rndm())*SigmaThSpread())); //??????????? to be change to real values
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-TGeoMatrix* AliRICHParam::Matrix(Int_t iChamN,Int_t iPlane)
-{
- TGeoHMatrix *pMatrix=new TGeoHMatrix;
-
- const Double_t kAngHor=19.5; // horizontal angle between chambers 19.5 grad
- const Double_t kAngVer=20; // vertical angle between chambers 20 grad
- const Double_t kAngCom=30; // common RICH rotation with respect to x axis 30 grad
-
- pMatrix->RotateY(90); //rotate around y since initial position is in XY plane -> now in YZ plane
- Double_t trans[3]={490,0,0}; //center of the chamber is on window-gap surface
-
- switch(iPlane){
- case kCenter: break;
- case kPc : trans[0]+=PcZ(); break;
- case kRad : trans[0]+=RadZ(); break;
- case kAnod : trans[0]+=AnodZ(); break;
- default: return 0; break;
- }
- pMatrix->SetTranslation(trans); //now plane in YZ is shifted along x
-
- switch(iChamN){
- case 1: pMatrix->RotateY(kAngHor); pMatrix->RotateZ(-kAngVer); break; //right and down
- case 2: pMatrix->RotateZ(-kAngVer); break; //down
- case 3: pMatrix->RotateY(kAngHor); break; //right
- case 4: break; //no rotation
- case 5: pMatrix->RotateY(-kAngHor); break; //left
- case 6: pMatrix->RotateZ(kAngVer); break; //up
- case 7: pMatrix->RotateY(-kAngHor); pMatrix->RotateZ(kAngVer); break; //left and up
- default: return 0; break;
- }//switch(iChamber)
- pMatrix->RotateZ(kAngCom); //apply common rotation in XY plane
- return pMatrix;
-}//Matrix()
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-TVector3 AliRICHParam::Lors2Mars(Int_t iChId,Double_t x,Double_t y,Int_t iPlnId)
-{
-// Trasform from LORS to MARS
-// Arguments: iChId - chamber code 1..7
-// x,y - point in LORS
-// iPlnN - chamber plane code might be kPc kRad kCenter kAnod
- Double_t z=0;
- switch(iPlnId){
- case kPc : z=PcZ() ; break;
- case kAnod : z=AnodZ(); break;
- case kCenter: z=0 ; break;
- case kRad : z=RadZ() ; break;
- }
- Double_t lors[3]={x-0.5*PcSizeX(),y-0.5*PcSizeY(),z}, mars[3];
- fMatrix[iChId-1]->LocalToMaster(lors,mars);
- return TVector3(mars);
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-TVector2 AliRICHParam::Mars2Lors(Int_t iChId,const TVector3 &x,Int_t iPlnId)
-{
-// Trasform from MARS to LORS
-// Arguments: iChId - chamber code 1..7
-// mars - point in MARS
-// iPlnN - chamber plane code might be kPc kRad kCenter kAnod
- Double_t z=0;
- switch(iPlnId){
- case kPc : z=PcZ() ; break;
- case kAnod : z=AnodZ(); break;
- case kCenter: z=0 ; break;
- case kRad : z=RadZ() ; break;
- }
- Double_t lors[3],mars[3];
- x.GetXYZ(mars);
- fMatrix[iChId-1]->MasterToLocal(mars,lors);
- return TVector2(lors[0]+0.5*PcSizeX(),lors[1]+0.5*PcSizeY());
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-TVector3 AliRICHParam::Lors2MarsOld(Int_t iChId,Double_t x,Double_t y,Int_t iPlnId)
-{
-// Trasform from LORS to MARS
-// Arguments: iChId - chamber code 0..6
-// x,y - point in LORS
-// iPlnN - chamber plane code might be kPc kRad kCenter kAnod
- TGeoMatrix *pMatrix=Matrix(iChId,iPlnId);
- Double_t lors[3]={x-0.5*PcSizeX(),y-0.5*PcSizeY(),0}, mars[3]; pMatrix->LocalToMaster(lors,mars); delete pMatrix;
- return TVector3(mars);
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-TVector2 AliRICHParam::Mars2LorsOld(Int_t iChamN,const TVector3 &x,Int_t iPlaneN)
-{
- TGeoMatrix *pMatrix=Matrix(iChamN,iPlaneN);
- Double_t mars[3]={x.X(),x.Y(),x.Z()} , lors[3]; pMatrix->MasterToLocal(mars,lors); delete pMatrix;
- return TVector2(lors[0]+0.5*PcSizeX(),lors[1]+0.5*PcSizeY());
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-TVector3 AliRICHParam::Mars2LorsVec(Int_t iChamN,const TVector3 &x)
-{
- TGeoMatrix *pMatrix=Matrix(iChamN,kPc);
- Double_t mars[3]={x.X(),x.Y(),x.Z()} , lors[3]; pMatrix->MasterToLocalVect(mars,lors); delete pMatrix;
- return TVector3(lors);
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-TVector3 AliRICHParam::Center(Int_t iChamN,Int_t iPlaneN)
-{
- TGeoMatrix *pMatrix=Matrix(iChamN,iPlaneN);
- Double_t mars[3] , lors[3]={0,0,0}; pMatrix->LocalToMaster(lors,mars); delete pMatrix;
- return TVector3(mars);
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-TVector3 AliRICHParam::Norm(Int_t iChamN)
-{
- TGeoMatrix *pMatrix=Matrix(iChamN,kPc);
- Double_t mars[3] , lors[3]={0,0,1}; pMatrix->LocalToMasterVect(lors,mars); delete pMatrix;
- return TVector3(mars);
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Int_t AliRICHParam::Hit2SDigs(Int_t iHitPad,Double_t e,TClonesArray *pSDigLst)
-{
-// Determines a number of pads affected by the hit and calculates the charge induced to each pad.
-// Integrated Mathieson distribution is used. Invoked from AliRICHvX::Hits2SDigits()
-// Arguments: iHitPad - hit pad absolute number
-// e - energy (GeV) of this hit (Eloss for mip or Etot for photon)
-// pSDigLst - pointer to clones array to store in calculated sdigits
-// Returns: total QDC for this hit
- Int_t iQtot=QdcTot(iHitPad,e); //total QDC value collected for this hit
- Int_t a=1; //analise current pad +- a pads in both directions
- Int_t iLeftX=0,iBotY=0,iRightX=0,iTopY=0; //area of disintegration for cluster formation, shifts to hit pad, not pad numbers
- if(AliRICHDigit::P2X(iHitPad) > a) iLeftX =-a;//determine area of disintegration as hit pad +- parametrised number
- if(AliRICHDigit::P2X(iHitPad) < AliRICHDigit::kPadsSecX-a) iRightX= a;//of pads. this number is determined by5 sigmas of Mathieson shape
- if(AliRICHDigit::P2Y(iHitPad) > a) iBotY =-a;//see RICH TDR page 29
- if(AliRICHDigit::P2Y(iHitPad) < AliRICHDigit::kPadsSecY-a) iTopY = a;//also boundary conditions are checked (edge of sector aka PC)
- Int_t iPadsCnt=0;
- for(Int_t iShiftX=iLeftX;iShiftX<=iRightX;iShiftX++){//affected pads loop iShiftX is a distance (in pads) between hit pad and pad under analisys
- for(Int_t iShiftY=iBotY;iShiftY<=iTopY;iShiftY++){//affected pads loop
- iHitPad+=AliRICHDigit::kPadAbsX*iShiftX+iShiftY;
- Double_t x1=PadSizeX()/Pc2Cath()*(iShiftX-0.5);//parametrise for Mathienson
- Double_t x2=PadSizeX()/Pc2Cath()*(iShiftX+0.5);//parametrise for Mathienson
- Double_t y1=PadSizeY()/Pc2Cath()*(iShiftY-0.5);//parametrise for Mathienson
- Double_t y2=PadSizeY()/Pc2Cath()*(iShiftY+0.5);//parametrise for Mathienson
- (*pSDigLst)[iPadsCnt++]= new AliRICHDigit(iHitPad,iQtot*Mathieson(x1,y1,x2,y2));
- }//Y loop
- }//X loop
- return iQtot;
-}//Hit2SDigs() for abs pad
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Int_t AliRICHParam::Hit2SDigs(TVector2 hitX2,Double_t e,TClonesArray *pSDigLst)
-{
-// Determines a number of pads affected by the hit and calculates the charge induced to each pad.
-// Integrated Mathieson distribution is used. Invoked from AliRICHvX::Hits2SDigits()
-// Arguments: hitX2 - hit position in LORS, cm
-// e - energy (GeV) of this hit (Eloss for mip or Etot for photon)
-// pSDigLst - pointer to clones array to store in calculated sdigits
-// Returns: total QDC for this hit
- Int_t iQtot=TotQdc(hitX2,e);//total charge produced by hit, 0 if hit in dead zone
- if(iQtot==0) return 0;
-
- TVector hitPad=Loc2Pad(hitX2); TVector2 padCenterX2=Pad2Loc(hitPad); //shift the hit position to the nearest anod wire
- TVector2 anod;
- if((hitX2.Y()-padCenterX2.Y())>0) anod.Set(hitX2.X(),padCenterX2.Y()+AnodPitch()/2); //upper part of the pad: shift to upper anod wire
- else anod.Set(hitX2.X(),padCenterX2.Y()-AnodPitch()/2); //lower part of the pad: shift to lower anod wire
-
- TVector area=Loc2Area(anod);//determine affected pads, dead zones analysed inside
- TVector pad(2); //current pad
- Int_t iPadsCnt=0;
- for(pad[1]=area[1];pad[1]<=area[3];pad[1]++){//affected pads loop
- for(pad[0]=area[0];pad[0]<=area[2];pad[0]++){
- Double_t dQpad=iQtot*FracQdc(anod,pad);
- if(dQpad>0.1) (*pSDigLst)[iPadsCnt++]= new AliRICHDigit(pad,dQpad);//make sdigit if Qpad is large enough, meaning after merging there is a chance to go above threshold
- }//X loop
- }//Y loop
- return iQtot;
-}//Hit2SDigs() for TVector2
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-TVector3 AliRICHParam::SigmaSinglePhotonFormula(Double_t thetaCer, Double_t phiCer, Double_t theta, Double_t phi, Double_t beta)
-{
- TVector3 v(-999,-999,-999);
-
- v.SetX(AliRICHParam::ErrLoc(thetaCer,phiCer,theta,phi,beta));
- v.SetY(AliRICHParam::ErrGeom(thetaCer,phiCer,theta,phi,beta));
- v.SetZ(AliRICHParam::ErrCrom(thetaCer,phiCer,theta,phi,beta));
-
- return v;
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Double_t AliRICHParam::ErrLoc(Double_t thetaC, Double_t phiC, Double_t Ptheta, Double_t Pphi, Double_t beta)
-{
-//par->RefIdxC6F14(par->MeanCkovEnergy())
-//(Float_t)1.29337525367736816e+00
-Double_t RefC6F14m = 1.29337;
- Double_t Hgap = Pc2Win();
- Double_t dphi = phiC - Pphi;
-
- Double_t alpha =TMath::Cos(Ptheta)-TMath::Tan(thetaC)*TMath::Cos(dphi)*TMath::Sin(Ptheta);
- Double_t k = 1.-RefC6F14m*RefC6F14m+alpha*alpha/(beta*beta);
-
- Double_t mu = TMath::Sin(Ptheta)*TMath::Sin(Pphi) + TMath::Tan(thetaC)*(TMath::Cos(Ptheta)*TMath::Cos(dphi)*TMath::Sin(Pphi)
-+ TMath::Sin(dphi)*TMath::Cos(Pphi));
-
- Double_t e = TMath::Sin(Ptheta)*TMath::Cos(Pphi)+TMath::Tan(thetaC)*(TMath::Cos(Ptheta)*TMath::Cos(dphi)*TMath::Cos(Pphi) -TMath::Sin(dphi)*TMath::Sin(Pphi));
-
- Double_t kk = beta*TMath::Sqrt(k)/(Hgap*alpha);
- Double_t dtdxc = kk*(k*(TMath::Cos(dphi)*TMath::Cos(Pphi) - TMath::Cos(Ptheta)*TMath::Sin(dphi)*TMath::Sin(Pphi)) - ( alpha*
- mu/(beta*beta) )*TMath::Sin(Ptheta)*TMath::Sin(dphi));
-
- Double_t dtdyc = kk*(k*(TMath::Cos(dphi)*TMath::Sin(Pphi) + TMath::Cos(Ptheta)*TMath::Sin(dphi)*TMath::Cos(Pphi)) + ( alpha*
- e/(beta*beta) )* TMath::Sin(Ptheta)*TMath::Sin(dphi));
-
- return TMath::Sqrt(0.2*0.2*dtdxc*dtdxc + 0.25*0.25*dtdyc*dtdyc);
-}
-
-Double_t AliRICHParam::ErrCrom(Double_t thetaC, Double_t phiC, Double_t Ptheta, Double_t Pphi, Double_t beta)
-{
- Double_t dphi = phiC - Pphi;
- Double_t RefC6F14m = 1.29337;
- Double_t alpha =TMath::Cos(Ptheta)-TMath::Tan(thetaC)*TMath::Cos(dphi)*TMath::Sin(Ptheta);
-
- Double_t dtdn = TMath::Cos(Ptheta)*RefC6F14m*beta*beta/(alpha*TMath::Tan(thetaC));
-
- Double_t f = 0.00928*(7.75-5.635)/TMath::Sqrt(12.);
-
- return f*dtdn;
-}
-//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Double_t AliRICHParam::ErrGeom(Double_t thetaC, Double_t phiC, Double_t Ptheta, Double_t Pphi, Double_t beta )
-{
-
- Double_t Tr = RadThick();
- Double_t Xep = 0.5*Tr;
-
- Double_t dphi = phiC - Pphi;
- Double_t RefC6F14m = 1.29337;
- Double_t alpha =TMath::Cos(Ptheta)-TMath::Tan(thetaC)*TMath::Cos(dphi)*TMath::Sin(Ptheta);
-
- Double_t k = 1.-RefC6F14m*RefC6F14m+alpha*alpha/(beta*beta);
-
- Double_t Hgap = Pc2Win();
-
-
- Double_t eTr = (Tr - Xep)*beta*TMath::Sqrt(k)/(Hgap*alpha);
- Double_t lambda = 1.-TMath::Sin(Ptheta)*TMath::Sin(Ptheta)*TMath::Sin(phiC)*TMath::Sin(phiC);
-
- Double_t c = 1./(1.+ eTr*k/(alpha*alpha*TMath::Cos(thetaC)*TMath::Cos(thetaC)));
- Double_t I = beta*TMath::Tan(thetaC)*lambda*TMath::Power(k,1.5);
- Double_t II = 1.+eTr*beta*I;
-
- Double_t err = c * (I/(alpha*alpha*Hgap) + II* (1.-lambda) / ( alpha*alpha*Hgap*beta*(1.+eTr)) );
- Double_t TrErr = Tr/(TMath::Sqrt(12.)*TMath::Cos(Ptheta));
-
- return TrErr*err;
-}//ErrGeom()
-#endif //AliRICHParam_h
+#endif
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff