* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
- $Log$
- Revision 1.1 2000/06/12 15:34:28 jbarbosa
- Cleaned up version.
-
-*/
+/* $Id$ */
#include "AliRICHSegmentationV1.h"
-
-//--------------------------------------------------------
ClassImp(AliRICHSegmentationV1)
-//________________________________________________________________________________
AliRICHSegmentationV1::AliRICHSegmentationV1()
{
// Default constructor for AliRICHSegmantionV1 (with dead zones)
- fNpx=160;
- fNpy=144;
- //fNpx=80;
- //fNpy=48;
- fSector=-1;
+ fNpx=144; // number of pads along X direction
+ fNpy=160; // number of pads along Y direction
+ fDeadZone=3.0; // space between CsI photocathods in cm
+ fDpx=0.84; // pad width in cm
+ fDpy=0.80; // pad heights in cm
+ fWireD=0.84/2;
+ fSector=-1;
+ Init(0); // ??? remove 0
}
-//________________________________________________________________________________
-AliRICHSegmentationV1::~AliRICHSegmentationV1()
-{
-// Destructor
+void AliRICHSegmentationV1::Init(Int_t /*id*/)
+{//Recalculates all the values after some of them have been changed
+
+ Float_t csi_length = fNpy*fDpy + fDeadZone;
+ Float_t csi_width = fNpx*fDpx + 2*fDeadZone;
+ fPadPlane_Width = (csi_width - 2*fDeadZone)/3;
+ fPadPlane_Length = (csi_length - fDeadZone)/2;
}
-
// calculate sector from x-y coordinates
Int_t AliRICHSegmentationV1::Sector(Float_t x, Float_t y)
{
// Calculate in which sector is the hit
-
+
fSector=-1;
- if (x<-1.3)
+ //old numerical definition
+
+ /*if (x<-fDeadZone/2)
{
if (y>22.75)
{
fSector=4;
}
}
- else if (x>1.3)
+ else if (x>fDeadZone/2)
{
if (y>22.75)
{
if (y>(-63.1))
fSector=5;
}
+ }*/
+
+ //Parametrized definition
+
+ if (y<-fDeadZone/2)
+ {
+ if (x> fPadPlane_Width/2 +fDeadZone)
+ {
+ if ( x<fPadPlane_Width/2 +fDeadZone + fPadPlane_Width)
+ fSector=0;
+ }
+ if (x< fPadPlane_Width/2)
+ {
+ if (x> -( fPadPlane_Width/2))
+ fSector=2;
+ }
+ if (x< -( fPadPlane_Width/2 +fDeadZone))
+ {
+ if (x> -( fPadPlane_Width/2 +fDeadZone + fPadPlane_Width))
+ fSector=4;
+ }
}
+ else if (y>fDeadZone/2)
+ {
+ if (x> fPadPlane_Width/2 +fDeadZone)
+ {
+ if (x< fPadPlane_Width/2 +fDeadZone + fPadPlane_Width)
+ fSector=1;
+ }
+ if (x< fPadPlane_Width/2)
+ {
+ if (x> -( fPadPlane_Width/2))
+ fSector=3;
+ }
+ if (x< -( fPadPlane_Width/2 +fDeadZone))
+ {
+ if (x> -( fPadPlane_Width/2 +fDeadZone + fPadPlane_Width))
+ fSector=5;
+ }
+ }
+
//if (fSector==2)
//printf("x:%f, y:%f, sector:%d\n",x,y,fSector);
}
-void AliRICHSegmentationV1::GetPadIxy(Float_t x, Float_t y, Int_t &ix, Int_t &iy)
+void AliRICHSegmentationV1::GetPadI(Float_t x, Float_t y, Int_t &ix, Int_t &iy)
{
// returns pad coordinates (ix,iy) for given real coordinates (x,y)
//
// Please check origin of pad numbering !!!
+ ix=9999; //PH Fake values which should not be returned
+ iy=9999;
+
Int_t sector=Sector(x,y);
//printf("Sector: %d\n",sector);
-
if (sector==0)
{
//ix = (x>0)? Int_t(x/fDpx)+1 : Int_t(x/fDpx);
//iy = (y>0)? Int_t(y/fDpy)+1 : Int_t(y/fDpy);
- ix = Int_t (x/fDpx+1.3);
- iy = Int_t (y/fDpy-2.6);
+ ix = Int_t ((x-fDeadZone)/fDpx);
+ iy = Int_t ((y+fDeadZone/2)/fDpy)-1;
}
if (sector==1)
{
- ix = Int_t (x/fDpx-1.3);
- iy = Int_t (y/fDpy-2.6);
+ ix = Int_t ((x-fDeadZone)/fDpx);
+ iy = Int_t ((y-fDeadZone/2)/fDpy);
}
if (sector==2)
{
- ix = Int_t (x/fDpx+1.3);
- iy = Int_t (y/fDpy);
+ ix = (x>=0)? ix = Int_t (x/fDpx) : ix = Int_t (x/fDpx)-1;
+ iy = Int_t ((y+fDeadZone/2)/fDpy)-1;
}
if (sector==3)
{
- ix = Int_t (x/fDpx-1.3);
- iy = Int_t (y/fDpy);
+ ix = (x>=0)? ix = Int_t (x/fDpx) : ix = Int_t (x/fDpx)-1;
+ iy = Int_t ((y-fDeadZone/2)/fDpy);
}
if (sector==4)
{
- ix = Int_t (x/fDpx+1.3);
- iy = Int_t (y/fDpy+2.6);
+ ix = Int_t ((x+fDeadZone)/fDpx)-1;
+ iy = Int_t ((y+fDeadZone/2)/fDpy)-1;
}
if (sector==5)
{
- ix = Int_t (x/fDpx-1.3);
- iy = Int_t (y/fDpy+2.6);
+ ix = Int_t ((x+fDeadZone)/fDpx)-1;
+ iy = Int_t ((y-fDeadZone/2)/fDpy);
}
+
//ix = Int_t (x/fDpx);
//iy = Int_t (y/fDpy);
}
void AliRICHSegmentationV1::
-GetPadCxy(Int_t ix, Int_t iy, Float_t &x, Float_t &y)
+GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y)
{
// returns real coordinates (x,y) for given pad coordinates (ix,iy)
//
Int_t sector=-1;
- if (ix<=0)
+ // old numerical definition
+
+ /*if (ix<=0)
{
if (iy<=72)
{
if (iy>-72)
sector=5;
}
- }
+ }*/
+ // parametrised definition
+
+ Float_t padplane_width = fNpx/3;
+
+ if (iy<0)
+ {
+ if (ix < fNpx/2)
+ {
+ if (ix >= padplane_width/2)
+ sector=0;
+ }
+ if (ix< padplane_width/2)
+ {
+ if (ix >= -(padplane_width/2))
+ sector=2;
+ }
+ if (ix >= -(fNpx/2))
+ {
+ if (ix < -(padplane_width/2))
+ sector=4;
+ }
+ }
+ if (iy>=0)
+ {
+ if (ix < fNpx/2)
+ {
+ if (ix >= padplane_width/2)
+ sector=1;
+ }
+ if (ix< padplane_width/2)
+ {
+ if (ix >= -(padplane_width/2))
+ sector=3;
+ }
+ if (ix >= -(fNpx/2))
+ {
+ if (ix < -(padplane_width/2))
+ sector=5;
+ }
+ }
if (sector==0)
{
//x = (ix>0) ? Float_t(ix*fDpx)-fDpx/2. : Float_t(ix*fDpx)-fDpx/2.;
//y = (iy>0) ? Float_t(iy*fDpy)-fDpy/2. : Float_t(iy*fDpy)-fDpy/2.;
- x = Float_t(ix*fDpx)-fDpx/2.-1.3;
- y = Float_t(iy*fDpy)-fDpy/2.+2.6;
+ x = Float_t(ix)*fDpx+fDpx/2+fDeadZone;
+ y = Float_t(iy)*fDpy+fDpy/2-fDeadZone/2;
}
if (sector==1)
{
- x = Float_t(ix*fDpx)-fDpx/2.+1.3;
- y = Float_t(iy*fDpy)-fDpy/2.+2.6;
+ x = Float_t(ix)*fDpx+fDpx/2+fDeadZone;
+ y = Float_t(iy)*fDpy+fDpy/2+fDeadZone/2;
}
if (sector==2)
{
- x = Float_t(ix*fDpx)-fDpx/2.-1.3;
- y = Float_t(iy*fDpy)-fDpy/2.;
+ x = (ix>=0) ? x = Float_t(ix)*fDpx+fDpx/2 : x = Float_t(ix)*fDpx+fDpx/2;
+ y = Float_t(iy)*fDpy+fDpy/2-fDeadZone/2;
}
if (sector==3)
{
- x = Float_t(ix*fDpx)-fDpx/2.+1.3;
- y = Float_t(iy*fDpy)-fDpy/2.;
+ x = (ix>=0) ? x = Float_t(ix)*fDpx+fDpx/2 : x = Float_t(ix)*fDpx+fDpx/2;
+ y = Float_t(iy)*fDpy+fDpy/2+fDeadZone/2;
}
if (sector==4)
{
- x = Float_t(ix*fDpx)-fDpx/2.-1.3;
- y = Float_t(iy*fDpy)-fDpy/2.-2.6;
+ x = Float_t(ix)*fDpx+fDpx/2-fDeadZone;
+ y = Float_t(iy)*fDpy+fDpy/2-fDeadZone/2;
}
if (sector==5)
{
- x = Float_t(ix*fDpx)-fDpx/2.+1.3;
- y = Float_t(iy*fDpy)-fDpy/2.-2.6;
+ x = Float_t(ix)*fDpx+fDpx/2-fDeadZone;
+ y = Float_t(iy)*fDpy+fDpy/2+fDeadZone/2;
}
+
//if (sector==2)
//printf("fSector:%d x:%f y:%f\n",fSector,x,y);
y1=fYhit-fY-fDpy/2.;
y2=y1+fDpy;
}
+
+
+
+
+
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff