#ifndef AliRICHParam_h
#define AliRICHParam_h
-#include "AliRICHConst.h"
-#include <TObject.h>
-#include <TMath.h>
-#include <TVector3.h>
-#include <TRandom.h>
-
-class AliRICHParam :public TObject
+#include <TNamed.h> //base class
+#include <TGeoManager.h> //Instance()
+#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
+
+// Class providing all the needed parametrised information
+// 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:
- AliRICHParam() {;}
- virtual ~AliRICHParam() {;}
- static Int_t NpadsX() {return 144;}
- static Int_t NpadsY() {return 160;}
- static Int_t NpadsXsec() {return NpadsX()/3;}
- static Int_t NpadsYsec() {return NpadsY()/2;}
- static Double_t DeadZone() {return 2.6;}
- static Double_t PadSizeX() {return 0.84;}
- static Double_t PadSizeY() {return 0.8;}
- static Double_t SectorSizeX() {return NpadsX()*PadSizeX()/3;}
- static Double_t SectorSizeY() {return NpadsY()*PadSizeY()/2;}
- static Double_t PcSizeX() {return NpadsX()*PadSizeX()+2*DeadZone();}
- static Double_t PcSizeY() {return NpadsY()*PadSizeY()+DeadZone();}
- static Double_t WirePitch() {return PadSizeX()/2;}
- static Double_t SizeX() {return 132.6;}
- static Double_t SizeY() {return 26;}
- static Double_t SizeZ() {return 136.7;}
- static Double_t Offset() {return 490+1.267;}
- static Double_t AngleYZ() {return 19.5*TMath::DegToRad();}
- static Double_t AngleXY() {return 20*TMath::DegToRad();}
- static Double_t FreonThickness() {return 1.5;}
- static Double_t QuartzThickness() {return 0.5;}
- static Double_t GapThickness() {return 8.0;}
- static Double_t RadiatorToPads() {return FreonThickness()+QuartzThickness()+GapThickness();}
- static Double_t ProximityGapThickness() {return 0.4;}
- static Double_t AnodeCathodeGap() {return 0.2;}
- static Double_t QuartzLength() {return 133;}
- static Double_t QuartzWidth() {return 127.9;}
- static Double_t OuterFreonLength() {return 133;}
- static Double_t OuterFreonWidth() {return 41.3;}
- static Double_t InnerFreonLength() {return 133;}
- static Double_t InnerFreonWidth() {return 41.3;}
- static Double_t IonisationPotential() {return 26.0e-9;}
- static Double_t MathiensonDeltaX() {return 5*0.18;}
- static Double_t MathiensonDeltaY() {return 5*0.18;}
- static Int_t MaxQdc() {return 4095;}
- static Double_t QdcSlope(Int_t sec) {HV(sec);return 27;}
- static Double_t AlphaFeedback(Int_t sec) {HV(sec);return 0.036;}
-
- static Bool_t IsWireSag() {return fgIsWireSag;}
- static Int_t HV(Int_t) {return fgHV;}
- static Double_t AngleRot() {return fgAngleRot*TMath::DegToRad();}
- static void SetWireSag(Bool_t status) {fgIsWireSag=status;}
- static void SetHV(Int_t hv) {fgHV =hv;}
- static void SetAngleRot(Double_t rot) {fgAngleRot =rot;}
-
- inline static Double_t Mathienson(Double_t lx1,Double_t lx2,Double_t ly1,Double_t ly2);
- inline static void Loc2Area(TVector3 hitX3,Int_t &padxMin,Int_t &padyMin,Int_t &padxMax,Int_t &padyMax);
- inline static Int_t PadNeighbours(Int_t iPadX,Int_t iPadY,Int_t aListX[4],Int_t aListY[4]);
- inline static Int_t Loc2Pad(Double_t x,Double_t y,Int_t &padx,Int_t &pady);
- inline static void Pad2Loc(Int_t padx,Int_t pady,Double_t &x,Double_t &y);
- inline static Double_t GainVariation(Double_t y,Int_t sector);
- inline static Int_t Loc2TotQdc(TVector3 locX3,Double_t eloss,Int_t iPid, Int_t §or);
- inline static Double_t Loc2PadFrac(TVector3 locX3,Int_t padx,Int_t pady);
-
- void SigGenInit(Double_t,Double_t){;}
- Bool_t SigGenCond(Double_t,Double_t){return kFALSE;}
- inline static Int_t Loc2Sec(Double_t &x,Double_t &y);
- inline static Int_t Pad2Sec(Int_t &padx,Int_t &pady);
- inline static Bool_t IsResolveClusters() {return kTRUE;}
+//ctor&dtor
+ 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 inline AliRICHParam* Instance(); //pointer to AliRICHParam singleton
+
+ 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
+//trasformation methodes
+ 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:
- static Bool_t fgIsWireSag; //is wire sagitta taken into account
- static Int_t fgHV; //HV applied to anod wires
- static Double_t fgAngleRot; //rotation of RICH from up postion (0,0,490)cm
-
- ClassDef(AliRICHParam,4) //RICH main parameters
+ AliRICHParam(); //default ctor is protected to enforce it to be singleton
+ static AliRICHParam *fgInstance; //static pointer to instance of AliRICHParam singleton
+ 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
};
-//__________________________________________________________________________________________________
-Int_t AliRICHParam::PadNeighbours(Int_t iPadX,Int_t iPadY,Int_t listX[4],Int_t listY[4])
-{
- Int_t nPads=0;
- if(iPadY<NpadsY()){listX[nPads]=iPadX; listY[nPads]=iPadY+1; nPads++;}
- if(iPadX<NpadsX()){listX[nPads]=iPadX+1; listY[nPads]=iPadY; nPads++;}
- if(iPadY>1) {listX[nPads]=iPadX; listY[nPads]=iPadY-1; nPads++;}
- if(iPadX>1) {listX[nPads]=iPadX-1; listY[nPads]=iPadY; nPads++;}
- return nPads;
-}//Pad2ClosePads()
-//__________________________________________________________________________________________________
-Int_t AliRICHParam::Loc2Sec(Double_t &x,Double_t &y)
-{//Determines sector for a given hit (x,y) and trasform this point to the local system of that sector.
- Int_t sector=kBad;
- Double_t x1=-PcSizeX()/2; Double_t x2=-SectorSizeX()/2-DeadZone(); Double_t x3=-SectorSizeX()/2;
- Double_t x4= SectorSizeX()/2; Double_t x5= SectorSizeX()/2+DeadZone(); Double_t x6= PcSizeX()/2;
-
- if (x>=x1&&x<=x2) {sector=1;x+=PcSizeX()/2;}
- else if(x>=x3&&x<=x4) {sector=2;x+=SectorSizeX()/2;}
- else if(x>=x5&&x<=x6) {sector=3;x-=SectorSizeX()/2+DeadZone();}
- else {return kBad;} //in dead zone
-
- if (y>=-PcSizeY()/2 &&y<=-DeadZone()/2) {y+=PcSizeY()/2; return sector;}
- else if(y> -DeadZone()/2 &&y< DeadZone()/2) {return kBad;} //in dead zone
- else if(y>= DeadZone()/2 &&y<= PcSizeY()/2) {y-=DeadZone()/2; return sector+3;}
- else {return kBad;}
-}//Loc2Sec(Double_t x, Double_t y)
-//__________________________________________________________________________________________________
-Int_t AliRICHParam::Pad2Sec(Int_t &padx, Int_t &pady)
-{//Determines sector for a given pad (padx,pady) and trasform this point to the local system of that sector.
- Int_t sector=kBad;
- if (padx>=1 &&padx<=NpadsXsec()) {sector=1;}
- else if(padx> NpadsXsec() &&padx<=NpadsXsec()*2) {sector=2;padx-=NpadsXsec();}
- else if(padx> NpadsXsec()*2&&padx<=NpadsX()) {sector=3;padx-=NpadsXsec()*2;}
- else {return kBad;}
-
- if (pady>=1 &&pady<= NpadsYsec()) {return sector;}
- else if(pady>NpadsYsec()&&pady<= NpadsY()) {pady-=NpadsYsec();return sector+3;}
- else {return kBad;}
-}//Pad2Sec()
-//__________________________________________________________________________________________________
-Int_t AliRICHParam::Loc2Pad(Double_t x, Double_t y, Int_t &padx, Int_t &pady)
-{//returns pad numbers (iPadX,iPadY) for given point in local coordinates (x,y)
- //count starts in lower left corner from 1,1 to 144,180
-
- padx=pady=kBad;
- Int_t sector=Loc2Sec(x,y);
- if(sector==kBad) return sector;
-
- padx=Int_t(x/PadSizeX())+1;
- if(padx>NpadsXsec()) padx= NpadsXsec();
- if(sector==2||sector==5) padx+=NpadsXsec();
- else if(sector==3||sector==6) padx+=NpadsXsec()*2;
-
- pady=Int_t(y/PadSizeY())+1;
- if(pady>NpadsYsec()) padx= NpadsYsec();
- if(sector>0) pady+=NpadsYsec();
-
- return sector;
-}//Loc2Pad()
-//__________________________________________________________________________________________________
-void AliRICHParam::Pad2Loc(Int_t padx,Int_t pady,Double_t &x,Double_t &y)
-{
- Int_t sector=Pad2Sec(padx,pady);
- if(sector>3)
- y=0.5*DeadZone()+pady*PadSizeY()-0.5*PadSizeY();
- else{
- y=-0.5*PcSizeY()+pady*PadSizeY()-0.5*PadSizeY();
- }
- if(sector==1||sector==4)
- x=-0.5*PcSizeX()+padx*PadSizeX()-0.5*PadSizeX();
- else if(sector==2||sector==5)
- x=-0.5*SectorSizeX()+padx*PadSizeX()-0.5*PadSizeX();
- else
- x= 0.5*SectorSizeX()+DeadZone()+padx*PadSizeX()-0.5*PadSizeX();
- return;
-}//Pad2Loc()
-//__________________________________________________________________________________________________
-Double_t AliRICHParam::GainVariation(Double_t y,Int_t sector)
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+AliRICHParam* AliRICHParam::Instance()
{
- if(IsWireSag()){
- if(y>0) y-=SectorSizeY()/2; else y+=SectorSizeY()/2;
- switch(HV(sector)){
- case 2150:
- default:
- return 9e-6*TMath::Power(y,4)+2e-7*TMath::Power(y,3)-0.0316*TMath::Power(y,2)-3e-4*y+25.367;//%
- }
- }else
- return 0;
-}
-//__________________________________________________________________________________________________
-Int_t AliRICHParam::Loc2TotQdc(TVector3 x3,Double_t eloss,Int_t iPid,Int_t §or)
-{//calculates the total charge produced by the hit given in local refenrence system
- Double_t x=x3.X(),y=x3.Y();
-
- sector=Loc2Sec(x,y);
-
- Double_t gain=QdcSlope(sector)*(1+GainVariation(x3.Y(),sector)/100);
-
-
- if(iPid>50000){//it's photon => 1 electron
- return Int_t(gain*-TMath::Log(gRandom->Rndm()));
- }else{//it's MIP
- Int_t iNelectrons=Int_t(eloss/IonisationPotential());
- if(iNelectrons==0) return 0;
- Double_t qdc=0;
- for(Int_t i=1;i<=iNelectrons;i++) qdc+=gain*-TMath::Log(gRandom->Rndm());
- return Int_t(qdc);
- }
-}
-//__________________________________________________________________________________________________
-Double_t AliRICHParam::Loc2PadFrac(TVector3 hitX3,Int_t padx,Int_t pady)
-{//
- Double_t padXcenter=0,padYcenter=0; Pad2Loc(padx,pady,padXcenter,padYcenter);
-
- //correction to the position of the nearest wire
-
- Double_t normXmin=(hitX3.X()-padXcenter-PadSizeX()/2) /AnodeCathodeGap();
- Double_t normXmax=(hitX3.X()-padXcenter+PadSizeX()/2) /AnodeCathodeGap();
- Double_t normYmin=(hitX3.Y()-padYcenter-PadSizeY()/2) /AnodeCathodeGap();
- Double_t normYmax=(hitX3.Y()-padYcenter+PadSizeY()/2) /AnodeCathodeGap();
-
- return Mathienson(normXmin,normYmin,normXmax,normYmax);
-}//Loc2PadQdc()
-//__________________________________________________________________________________________________
-Double_t AliRICHParam::Mathienson(Double_t xMin,Double_t yMin,Double_t xMax,Double_t yMax)
-{//see NIM A370(1988)602-603
- const Double_t SqrtKx3=0.77459667;const Double_t Kx2=0.962;const Double_t Kx4=0.379;
- const Double_t SqrtKy3=0.77459667;const Double_t Ky2=0.962;const Double_t Ky4=0.379;
-
- Double_t ux1=SqrtKx3*TMath::TanH(Kx2*xMin);
- Double_t ux2=SqrtKx3*TMath::TanH(Kx2*xMax);
- Double_t uy1=SqrtKy3*TMath::TanH(Ky2*yMin);
- Double_t uy2=SqrtKy3*TMath::TanH(Ky2*yMax);
- return 4*Kx4*(TMath::ATan(ux2)-TMath::ATan(ux1))*Ky4*(TMath::ATan(uy2)-TMath::ATan(uy1));
-}
-//__________________________________________________________________________________________________
-void AliRICHParam::Loc2Area(TVector3 hitX3,Int_t &iPadXmin,Int_t &iPadYmin,Int_t &iPadXmax,Int_t &iPadYmax)
-{//calculates the area of disintegration for a given hit. Area is a rectangulare set pf pads
- //defined by its left-down and right-up coners
- // hitX3.SetX(Shift2NearestWire(hitX3.X());
- Loc2Pad(hitX3.X()-MathiensonDeltaX(),hitX3.Y()-MathiensonDeltaY(),iPadXmin,iPadYmin);
- Loc2Pad(hitX3.X()+MathiensonDeltaX(),hitX3.Y()+MathiensonDeltaY(),iPadXmax,iPadYmax);
-}//
-#endif //AliRICHParam_h
+// Return pointer to the AliRICHParam singleton.
+// Arguments: none
+// Returns: pointer to the instance of AliRICHParam or 0 if no geometry
+ if(!fgInstance)
+ if(gGeoManager) new AliRICHParam;
+ else Printf("AliRICHParam> Error:: No geometry defined!");
+ return fgInstance;
+}//Instance()
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+#endif
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