ClassImp(AliITSsegmentationSPD)
-Float_t ColFromZ300(Float_t z) {
+Float_t AliITSsegmentationSPD::ColFromZ300(Float_t z) {
// Get column number for each z-coordinate taking into account the
// extra pixels in z direction assuming 300 micron sized pixels.
Float_t col = 0.0;
return col;
}
//_____________________________________________________________________________
-Float_t ZFromCol300(Int_t col) {
+Float_t AliITSsegmentationSPD::ZFromCol300(Int_t col) {
// same comments as above
// Get z-coordinate for each colunm number
Float_t pitchz = 300.0;
return z;
}
//_____________________________________________________________________________
-Float_t ZpitchFromCol300(Int_t col) {
+Float_t AliITSsegmentationSPD::ZpitchFromCol300(Int_t col) {
// returns Z pixel pitch for 300 micron pixels.
return 300.0;
}
//_____________________________________________________________________________
-Float_t ColFromZ(Float_t z) {
-// hard-wired - keep it like this till we can parametrise
-// and get rid of AliITSgeomSPD425
-// Get column number for each z-coordinate taking into account the
-// extra pixels in z direction
-
+Float_t AliITSsegmentationSPD::ColFromZ(Float_t z) {
+ // hard-wired - keep it like this till we can parametrise
+ // and get rid of AliITSgeomSPD425
+ // Get column number for each z-coordinate taking into account the
+ // extra pixels in z direction
+ Int_t i;
+ Float_t s,col;
+
+ if(z<0||z>fDz){
+ Error("ColFromZ","z=%f outside of range 0.0<=z<fDz=%f",z,fDz);
+ return 0.0; // error
+ } // end if outsize of detector
+ s = 0.0;
+ i = -1;
+ while(z>s){
+ i++;
+ s += fCellSizeZ[i];
+ } // end while
+ s -= fCellSizeZ[i];
+ col = (Float_t) i + (z-s)/fCellSizeZ[i];
+ return col;
+
+/*
Float_t col = 0;
Float_t pitchz = 425;
if( z < 13175) {
} else if( z < 83600) {
col = 161 + (z - 70425)/pitchz;
}
- return TMath::Abs(col);
+ return TMath::Abs(col);*/
}
//_____________________________________________________________________________
-Float_t ZFromCol(Int_t col) {
-// same comments as above
-// Get z-coordinate for each colunm number
-
+Float_t AliITSsegmentationSPD::ZFromCol(Int_t col) {
+ // same comments as above
+ // Get z-coordinate for each colunm number
+ Int_t i;
+ Float_t z;
+
+ if(col<0||col>=fNpz){
+ Error("ZFromCol","col=%d outside of range 0<=col<fNpZ=%d",col,fNpz);
+ return 0.0; // error
+ } // end if outsize of detector
+ z = 0.0;
+ for(i=0;i<col;i++) z += fCellSizeZ[i];
+ z += 0.5*fCellSizeZ[col];
+ return z;
+
+/*
Float_t pitchz = 425;
Float_t z = 0;
if( col >=0 && col <= 30 ) {
z = 70425 + (col -161 + 0.5)*pitchz;
}
- return z;
+ return z;*/
}
//______________________________________________________________________
-Float_t ZpitchFromCol(Int_t col) {
-// Get pitch size in z direction for each colunm
+Float_t AliITSsegmentationSPD::ZpitchFromCol(Int_t col) {
+ // Get pitch size in z direction for each colunm
- Float_t pitchz = 425;
+ Float_t pitchz = 425.;
if(col < 0){
pitchz = 0.0;
} else if(col >= 31 && col <= 32) {
- pitchz = 625;
+ pitchz = 625.;
} else if(col >= 63 && col <= 64) {
- pitchz = 625;
+ pitchz = 625.;
} else if(col >= 95 && col <= 96) {
- pitchz = 625;
+ pitchz = 625.;
} else if(col >= 127 && col <= 128) {
- pitchz = 625;
+ pitchz = 625.;
} else if(col >= 159 && col <= 160) {
- pitchz = 625;
- } else if(col>192){
- pitchz = 0.0;
+ pitchz = 625.;
+ } else if(col>=192){
+ pitchz = 425.;
}
return pitchz;
}
Int_t i;
for(i=0;i<256;i++) fCellSizeX[i] = x[i];
- for(i=0;i<280;i++) fCellSizeX[i] = z[i];
+ for(i=0;i<280;i++) fCellSizeZ[i] = z[i];
return;
}
//----------------------------------------------------------------------
fNpx = 256; // The number of X pixel Cell same as in fCellSizeX array size
fNpz = 279; // The number of Z pixel Cell same as in fCellSizeZ array size
for(i=0;i<fNpx;i++) fCellSizeX[i] = 50.0; // microns all the same
- for(i=0;i<fNpz;i++) fCellSizeZ[i] = ZpitchFromCol300(i); // microns
- for(i=fNpz;i<280;i++) fCellSizeZ[i] = 0.0; // zero out rest of array
+ for(i=0;i<280;i++) fCellSizeZ[i] = ZpitchFromCol300(i); // microns
+// for(i=fNpz;i<280;i++) fCellSizeZ[i] = 0.0; // zero out rest of array
fDx = 0;
for(i=0;i<fNpx;i++) fDx += fCellSizeX[i];
fDz = 0;
fNpx = 256; // The number of X pixel Cell same as in fCellSizeX array size
fNpz = 192; // The number of Z pixel Cell same as in fCellSizeZ array size
for(i=0;i<fNpx;i++) fCellSizeX[i] = 50.0; // microns all the same
- for(i=0;i<fNpz;i++) fCellSizeZ[i] = ZpitchFromCol(i); // microns
- for(i=fNpz;i<280;i++) fCellSizeZ[i] = 0.0; // zero out rest of array
+ for(i=0;i<280;i++) fCellSizeZ[i] = ZpitchFromCol(i); // microns
+// for(i=fNpz;i<280;i++) fCellSizeZ[i] = 0.0; // zero out rest of array
fDx = 0;
for(i=0;i<fNpx;i++) fDx += fCellSizeX[i];
fDz = 0;
}
//------------------------------
Float_t AliITSsegmentationSPD::Dpx(Int_t i){
- //returs x pixel pitch for a give pixel
- return fCellSizeX[i];
+ //returs x pixel pitch for a give pixel
+ if(i<0||i>=256) return 0.0;
+ return fCellSizeX[i];
}
//------------------------------
Float_t AliITSsegmentationSPD::Dpz(Int_t i){
- // returns z pixel pitch for a give pixel
- return ZpitchFromCol(i);
+ // returns z pixel pitch for a give pixel
+ if(i<0||i>=280) return 0.0;
+ return fCellSizeZ[i];
}
//------------------------------
void AliITSsegmentationSPD::GetPadIxz(Float_t x,Float_t z,Int_t &ix,Int_t &iz){
z += 0.5*kconv*fCellSizeZ[iz]; // add 1/2 of cell iz for center location.
return; // Found x and z, return.
}
+//______________________________________________________________________
+void AliITSsegmentationSPD::CellBoundries(Int_t ix,Int_t iz,
+ Double_t &xl,Double_t &xu,
+ Double_t &zl,Double_t &zu)
+{
+// Transformation from Detector cell coordiantes to Geant detector centerd
+// local coordinates (cm).
+// Input:
+// Int_t ix detector x cell coordinate. Has the range 0<=ix<fNpx.
+// Int_t iz detector z cell coordinate. Has the range 0<=iz<fNpz.
+// Output:
+// Double_t xl detector local coordinate cell lower bounds x in cm
+// with respect to the center of the sensitive volume.
+// Double_t xu detector local coordinate cell upper bounds x in cm
+// with respect to the center of the sensitive volume.
+// Double_t zl detector local coordinate lower bounds z in cm with
+// respect to the center of the sensitive volulme.
+// Double_t zu detector local coordinate upper bounds z in cm with
+// respect to the center of the sensitive volulme.
+// If ix and or iz is outside of the segmentation range a value of -0.5*Dx()
+// and -0.5*Dx() or -0.5*Dz() and -0.5*Dz() are returned.
+ Int_t i,j;
+ const Float_t kconv = 1.0E-04; // converts microns to cm.
+ Float_t x,z;
+
+ xl = xu = x = -0.5*kconv*Dx(); // default value.
+ zl = zu = z = -0.5*kconv*Dz(); // default value.
+ if(ix<0 || ix>=Npx()) return; // outside of detector
+ if(iz<0 || iz>=Npz()) return; // outside of detctor
+ for(i=0;i<ix;i++) x += kconv*fCellSizeX[i]; // sum up to cell ix-1
+ xl = x;
+ x += kconv*fCellSizeX[ix];
+ xu = x;
+ for(j=0;j<iz;j++) z += kconv*fCellSizeZ[j]; // sum up cell iz-1
+ zl = z;
+ z += kconv*fCellSizeZ[iz];
+ zu = z;
+ return; // Found x and z, return.
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff