* about the suitability of this software for any purpose. It is *
* provided "as is" without express or implied warranty. *
**************************************************************************/
-
-#include <TF1.h>
+#include <Riostream.h>
#include <TMath.h>
-
+#include <TGeoManager.h>
+#include <TGeoVolume.h>
+#include <TGeoBBox.h>
#include "AliITSsegmentationSDD.h"
-#include "AliITS.h"
-#include "AliITSgeom.h"
-#include "AliRun.h"
-#include "AliITSresponse.h"
+#include "AliITSDriftSpeedSDD.h"
+
+/////////////////////////////////////////////////////////////////////////////
+// Segmentation class for drift detectors //
+// //
+// microcables microcables //
+// /\ /\ //
+// || || //
+// || || //
+// || || //
+// 0 256 0 //
+// 0 |----------------------|---------------------| 511 //
+// | time-bins | time-bins | //
+// | a | a | //
+// | n | n | //
+// X <_|_o____________________|___________________o_|__ //
+// | d | d | //
+// | e LEFT SIDE | RIGHT SIDE e | //
+// | s CHANNEL 0 | CHANNEL 1 s | //
+// | Xlocal > 0 | Xlocal < 0 | //
+// 255 |----------------------|---------------------| 256 //
+// | //
+// | //
+// V //
+// Z //
+/////////////////////////////////////////////////////////////////////////////
+
+/* $Id$ */
+const Float_t AliITSsegmentationSDD::fgkDxDefault = 35085.;
+const Float_t AliITSsegmentationSDD::fgkDzDefault = 75264.;
+const Float_t AliITSsegmentationSDD::fgkDyDefault = 300.;
+const Float_t AliITSsegmentationSDD::fgkPitchDefault = 294.;
+const Float_t AliITSsegmentationSDD::fgkClockDefault = 40.;
+const Int_t AliITSsegmentationSDD::fgkHalfNanodesDefault = 256;
+const Int_t AliITSsegmentationSDD::fgkNsamplesDefault = 256;
+const Int_t AliITSsegmentationSDD::fgkNchipsPerHybrid = 4;
+const Int_t AliITSsegmentationSDD::fgkNanodesPerChip = 64;
+const Float_t AliITSsegmentationSDD::fgkCm2Micron = 10000.;
+const Float_t AliITSsegmentationSDD::fgkMicron2Cm = 1.0E-04;
ClassImp(AliITSsegmentationSDD)
-//----------------------------------------------------------------------
-AliITSsegmentationSDD::AliITSsegmentationSDD(AliITSgeom* geom,
- AliITSresponse *resp){
- // constructor
- fGeom=geom;
- fResponse=resp;
- fCorr=0;
- SetDetSize();
- SetPadSize();
- SetNPads();
-}
//______________________________________________________________________
-AliITSsegmentationSDD::AliITSsegmentationSDD(){
- // standard constructor
- fGeom=0;
- fResponse=0;
- fCorr=0;
- SetDetSize();
- SetPadSize();
- SetNPads();
-
+AliITSsegmentationSDD::AliITSsegmentationSDD(Option_t *opt) : AliITSsegmentation(),
+fNsamples(0),
+fNanodes(0),
+fPitch(0),
+fTimeStep(0),
+fDriftSpeed(0),
+fSetDriftSpeed(0){
+ // Default constructor
+ Init();
+ if(strstr(opt,"TGeo")){
+ if(!gGeoManager){
+ AliError("Geometry is not initialized\n");
+ return;
+ }
+ TGeoVolume *v=NULL;
+ v = gGeoManager->GetVolume("ITSsddSensitivL3");
+ if(!v){
+ AliWarning("TGeo volume ITSsddSensitivL3 not found (hint: use v11Hybrid geometry)\n Using hardwired default values");
+ }
+ else {
+ TGeoBBox *s=(TGeoBBox*)v->GetShape();
+ SetDetSize(s->GetDX()*10000.,s->GetDZ()*20000.,s->GetDY()*20000.);
+ }
+ }
}
+
//______________________________________________________________________
-AliITSsegmentationSDD& AliITSsegmentationSDD::operator=(AliITSsegmentationSDD
- &source){
- // Operator =
- if(this==&source) return *this;
- this->fNsamples = source.fNsamples;
- this->fNanodes = source.fNanodes;
- this->fPitch = source.fPitch;
- this->fTimeStep = source.fTimeStep;
- this->fDx = source.fDx;
- this->fDz = source.fDz;
- this->fDy = source.fDy;
- this->fCorr = new TF1(*(source.fCorr));
- this->fGeom = source.fGeom; // Just copy the pointer
- this->fResponse = source.fResponse; //Just copy the pointer
- return *this;
+void AliITSsegmentationSDD::Copy(TObject &obj) const {
+ // protected method. copy this to obj
+ AliITSsegmentation::Copy(obj);
+ ((AliITSsegmentationSDD& ) obj).fNsamples = fNsamples;
+ ((AliITSsegmentationSDD& ) obj).fNanodes = fNanodes;
+ ((AliITSsegmentationSDD& ) obj).fPitch = fPitch;
+ ((AliITSsegmentationSDD& ) obj).fTimeStep = fTimeStep;
+ ((AliITSsegmentationSDD& ) obj).fDriftSpeed = fDriftSpeed;
+ ((AliITSsegmentationSDD& ) obj).fSetDriftSpeed = fSetDriftSpeed;
}
+
//______________________________________________________________________
-AliITSsegmentationSDD::AliITSsegmentationSDD(AliITSsegmentationSDD &source){
- // Copy constructor
- *this = source;
+AliITSsegmentationSDD& AliITSsegmentationSDD::operator=(const AliITSsegmentationSDD &source){
+ // = operator
+ if(this==&source) return *this;
+ source.Copy(*this);
+ return *this;
}
-//----------------------------------------------------------------------
-void AliITSsegmentationSDD::Init(){
- // Standard initilisation routine
- if(!fGeom) {
- return;
- //fGeom = ((AliITS*)gAlice->GetModule("ITS"))->GetITSgeom();
- }
- AliITSgeomSDD *gsdd = (AliITSgeomSDD *) (fGeom->GetShape(3,1,1));
+//____________________________________________________________________________
+AliITSsegmentationSDD::AliITSsegmentationSDD(const AliITSsegmentationSDD &source) :
+ AliITSsegmentation(source),
+fNsamples(0),
+fNanodes(0),
+fPitch(0),
+fTimeStep(0),
+fDriftSpeed(0),
+fSetDriftSpeed(0){
+ // copy constructor
+ source.Copy(*this);
+}
- const Float_t kconv=10000.;
- fDz = 2.*kconv*gsdd->GetDz();
- fDx = kconv*gsdd->GetDx();
- fDy = 2.*kconv*gsdd->GetDy();
+//----------------------------------------------------------------------
+void AliITSsegmentationSDD::Init(){
+// Standard initilisation routine
+ fDriftSpeed=AliITSDriftSpeedSDD::DefaultDriftSpeed();
+ fCorr=0;
+ SetDetSize(fgkDxDefault,fgkDzDefault,fgkDyDefault);
+ SetPadSize(fgkPitchDefault,fgkClockDefault);
+ SetNPads(fgkHalfNanodesDefault,fgkNsamplesDefault);
}
//----------------------------------------------------------------------
void AliITSsegmentationSDD::
-Neighbours(Int_t iX, Int_t iZ, Int_t* Nlist, Int_t Xlist[8], Int_t Zlist[8]){
+Neighbours(Int_t iX, Int_t iZ, Int_t* Nlist, Int_t Xlist[8], Int_t Zlist[8]) const {
// returns neighbours for use in Cluster Finder routines and the like
if(iX >= fNanodes) printf("iX > fNanodes %d %d\n",iX,fNanodes);
Zlist[2]=Zlist[3]=iZ;
}
//----------------------------------------------------------------------
-void AliITSsegmentationSDD::GetPadIxz(Float_t x,Float_t z,
- Int_t &timebin,Int_t &anode){
-// Returns cell coordinates (time sample,anode) for given real local
-// coordinates (x,z)
+Float_t AliITSsegmentationSDD::GetAnodeFromLocal(Float_t xloc,Float_t zloc) const {
+ // returns anode coordinate (as float) starting from local coordinates
+ Float_t xAnode=zloc*fgkCm2Micron/fPitch;
+ if(xloc>0){ // left side (anodes 0-255, anode 0 at zloc<0)
+ xAnode+=(Float_t)fNanodes/4;
+ }else{ // right side (anodes 256-511, anode 0 at zloc>0)
+ xAnode=3*fNanodes/4-xAnode;
+ }
+ return xAnode;
+}
- // expects x, z in cm
+//----------------------------------------------------------------------
+Float_t AliITSsegmentationSDD::GetLocalZFromAnode(Int_t nAnode) const{
+ // returns local Z coordinate from anode number (integer)
+ Float_t zAnode=(Float_t)nAnode+0.5;
+ return GetLocalZFromAnode(zAnode);
+}
- const Float_t kconv=10000; // cm->um
+//----------------------------------------------------------------------
+Float_t AliITSsegmentationSDD::GetLocalZFromAnode(Float_t zAnode) const{
+ // returns local Z coordinate from anode number (float)
+ Float_t zloc=0.;
+ if(zAnode<fNanodes/2){ // left side
+ zloc=(zAnode*fPitch-fDz/2)*fgkMicron2Cm;
+ }else{ // right side
+ zAnode-=fNanodes/2;
+ zloc=-(zAnode*fPitch-fDz/2)*fgkMicron2Cm;
+ }
+ return zloc;
+}
+//----------------------------------------------------------------------
+Int_t AliITSsegmentationSDD::GetChipFromChannel(Int_t ix, Int_t iz) const {
+ // returns chip number (in range 0-7) starting from channel number
+ if(iz>=fNanodes || iz<0 || ix>fNsamples){
+ AliError("Bad cell number");
+ return -1;
+ }
+ Int_t theChip=iz/fgkNanodesPerChip;
+ return theChip;
+}
+//----------------------------------------------------------------------
+Int_t AliITSsegmentationSDD::GetChipFromLocal(Float_t xloc, Float_t zloc) const {
+ // returns chip number (in range 0-7) starting from local coordinates
+ Float_t detsize=fDz*fgkMicron2Cm;
+ Float_t chipsize=detsize/(Float_t)fgkNchipsPerHybrid;
+ zloc+=detsize/2.;
+ if(zloc<-0.01 || zloc>detsize+0.01){ // 100 micron tolerance around edges
+ AliError("Z local value out of sensitive SDD area");
+ return -1;
+ }
+ Int_t iChip=int(zloc/chipsize);
+ if(zloc<0.) iChip=0;
+ if(zloc>=detsize) iChip=fgkNchipsPerHybrid-1;
+ if(iChip>=fgkNchipsPerHybrid || iChip<0){
+ AliError(Form("Bad chip number %d",iChip));
+ return -1;
+ }
+ Int_t iSide=GetSideFromLocalX(xloc);
+ if(iSide==1) iChip=fgkNchipsPerHybrid-iChip+3; // i.e. 7-iChip
+ return iChip;
+}
+//----------------------------------------------------------------------
+Int_t AliITSsegmentationSDD::GetChipsInLocalWindow(Int_t* array, Float_t zmin, Float_t zmax, Float_t xmin, Float_t xmax) const {
+ Int_t nChipInW = 0;
+ Float_t zminDet=-fDz*fgkMicron2Cm/2.;
+ Float_t zmaxDet=fDz*fgkMicron2Cm/2.;
+ if(zmin<zminDet) zmin=zminDet;
+ if(zmax>zmaxDet) zmax=zmaxDet;
+ Float_t xminDet=-fDx*fgkMicron2Cm;
+ Float_t xmaxDet=fDx*fgkMicron2Cm;
+ if(xmin<xminDet) xmin=xminDet;
+ if(xmax>xmaxDet) xmax=xmaxDet;
+ Int_t n1=GetChipFromLocal(xmin,zmin);
+ array[nChipInW]=n1;
+ nChipInW++;
+ Int_t n2=GetChipFromLocal(xmin,zmax);
+ if(n2!=n1){
+ Int_t imin=TMath::Min(n1,n2);
+ Int_t imax=TMath::Max(n1,n2);
+ for(Int_t ichip=imin; ichip<=imax; ichip++){
+ if(ichip==n1) continue;
+ array[nChipInW]=ichip;
+ nChipInW++;
+ }
+ }
+ Int_t n3=GetChipFromLocal(xmax,zmin);
+ if(n3!=n1){
+ array[nChipInW]=n3;
+ nChipInW++;
+ Int_t n4=GetChipFromLocal(xmax,zmax);
+ if(n4!=n3){
+ Int_t imin=TMath::Min(n3,n4);
+ Int_t imax=TMath::Max(n3,n4);
+ for(Int_t ichip=imin; ichip<=imax; ichip++){
+ if(ichip==n3) continue;
+ array[nChipInW]=ichip;
+ nChipInW++;
+ }
+ }
+ }
+ return nChipInW;
+}
+//----------------------------------------------------------------------
+void AliITSsegmentationSDD::GetPadIxz(Float_t x,Float_t z,
+ Int_t &timebin,Int_t &anode) const {
+// Returns cell coordinates (time sample,anode)
+// for given real local coordinates (x,z)
- Float_t speed=fResponse->DriftSpeed();
- Int_t na = fNanodes/2;
- Float_t driftpath=fDx-TMath::Abs(kconv*x);
- timebin=(Int_t)(driftpath/speed/fTimeStep);
- anode=(Int_t)(kconv*z/fPitch) + na/2;
- if (x > 0) anode += na;
+ // expects x, z in cm
- timebin+=1;
- anode+=1;
+ Float_t driftpath=fDx-TMath::Abs(x*fgkCm2Micron);
+ timebin=(Int_t)(driftpath/fDriftSpeed/fTimeStep);
+ anode=(Int_t)GetAnodeFromLocal(x,z);
+ if(!fSetDriftSpeed){
+ timebin=-999;
+ AliWarning("Drift speed not set: timebin is dummy");
+ }
}
//----------------------------------------------------------------------
void AliITSsegmentationSDD::GetPadCxz(Int_t timebin,Int_t anode,
- Float_t &x ,Float_t &z){
- // Transform from cell to real local coordinates
- // returns x, z in cm
+ Float_t &x ,Float_t &z) const{
+ // Transform from cell to real local coordinates
+ // returns x, z in cm
- const Float_t kconv=10000; // um->cm
-
- Float_t speed=fResponse->DriftSpeed();
- Int_t na = fNanodes/2;
- Float_t driftpath=(timebin+1)*fTimeStep*speed;
- if (anode >= na) x=(fDx-driftpath)/kconv;
- else x = -(fDx-driftpath)/kconv;
- if (anode >= na) anode-=na;
- z=((anode+1)*fPitch-fDz/2)/kconv;
+ // the +0.5 means that an # and time bin # should start from 0 !!!
+ // the +0.5 means that an # and time bin # should start from 0 !!!
+ Float_t driftpath=GetDriftTimeFromTb(timebin)*fDriftSpeed;
+ if (anode < fNanodes/2){ // left side, positive x
+ x=(fDx-driftpath)*fgkMicron2Cm;
+ }else{ // right side, negative x
+ x = -(fDx-driftpath)*fgkMicron2Cm;
+ }
+ z=GetLocalZFromAnode(anode);
+ if(!fSetDriftSpeed){
+ x=-9999.;
+ AliWarning("Drift speed not set: x coord. is dummy");
+ }
}
//----------------------------------------------------------------------
-void AliITSsegmentationSDD::GetPadTxz(Float_t &x,Float_t &z){
+void AliITSsegmentationSDD::GetPadTxz(Float_t &x,Float_t &z) const{
// Get anode and time bucket as floats - numbering from 0
// expects x, z in cm
- const Float_t kconv=10000; // cm->um
+ Float_t xloc=x;
+ Float_t zloc=z;
+ Float_t driftpath=fDx-TMath::Abs(fgkCm2Micron*xloc);
+ x=driftpath/fDriftSpeed/fTimeStep;
+ if (xloc < 0) x = -x;
+ z=GetAnodeFromLocal(xloc,zloc);
+ if(!fSetDriftSpeed){
+ x=-9999.;
+ AliWarning("Drift speed not set: x coord. is dummy");
+ }
+}
+//----------------------------------------------------------------------
+void AliITSsegmentationSDD::Print(Option_t *opt) const {
+ // Print SDD segmentation Parameters
- Float_t x0=x;
- Float_t speed=fResponse->DriftSpeed();
- Int_t na = fNanodes/2;
- Float_t driftpath=fDx-TMath::Abs(kconv*x);
- x=driftpath/speed/fTimeStep;
- z=kconv*z/fPitch + (float)na/2;
- if (x0 < 0) x = -x;
+ cout << "**************************************************" << endl;
+ cout << " Silicon Drift Detector Segmentation Parameters " << opt << endl;
+ cout << "**************************************************" << endl;
+ cout << "Number of Time Samples: " << fNsamples << endl;
+ cout << "Number of Anodes: " << fNanodes << endl;
+ cout << "Time Step (ns): " << fTimeStep << endl;
+ cout << "Anode Pitch (um): " << fPitch << endl;
+ cout << "Full Detector Width (x): " << fDx;
+ cout<<" (Default is "<<fgkDxDefault<<") "<<endl;
+ cout << "Half Detector Length (z): " << fDz;
+ cout<<" (Default is "<<fgkDzDefault<<") "<<endl;
+ cout << "Full Detector Thickness (y): " << fDy;
+ cout<<" (Default is "<<fgkDyDefault<<") "<<endl;
+ cout << "**************************************************" << endl;
}
+
//----------------------------------------------------------------------
-void AliITSsegmentationSDD::GetLocal(Int_t module,Float_t *g ,Float_t *l){
- // returns local coordinates from global
- if(!fGeom) {
- return;
- //fGeom = ((AliITS*)gAlice->GetModule("ITS"))->GetITSgeom();
- }
- fGeom->GtoL(module,g,l);
+void AliITSsegmentationSDD::PrintDefaultParameters() const {
+ // print SDD parameters defined as static const data members
+
+ cout << "**************************************************" << endl;
+ cout << " Silicon Drift Detector Segmentation Parameters " << endl;
+ cout << " Default values defined as static const data members"<< endl;
+ cout << " Actual values can be set with the relevant setters"<< endl;
+ cout << "**************************************************" << endl;
+ cout<<"fgkDxDefault = "<<fgkDxDefault<<endl;
+ cout<<"fgkDzDefault = "<<fgkDzDefault<<endl;
+ cout<<"fgkDyDefault = "<<fgkDyDefault<<endl;
+ cout<<"fgkPitchDefault = "<<fgkPitchDefault<<endl;
+ cout<<"fgkClockDefault = "<<fgkClockDefault<<endl;
+ cout<<"fgkHalfNanodesDefault = "<<fgkHalfNanodesDefault<<endl;
+ cout<<"fgkNsamplesDefault = "<<fgkNsamplesDefault<<endl;
+ cout << "**************************************************" << endl;
+
}
-//----------------------------------------------------------------------
-void AliITSsegmentationSDD::GetGlobal(Int_t module,Float_t *l ,Float_t *g){
- // return global coordinates from local
- if(!fGeom) {
- return;
- //fGeom = ((AliITS*)gAlice->GetModule("ITS"))->GetITSgeom();
- }
- fGeom->LtoG(module,l,g);
+//______________________________________________________________________
+Bool_t AliITSsegmentationSDD::LocalToDet(Float_t x,Float_t z,
+ Int_t &ix,Int_t &iz) const {
+// Transformation from Geant detector centered local coordinates (cm) to
+// time bucket numbers ix and anode number iz.
+// Input:
+// Float_t x detector local coordinate x in cm with respect to the
+// center of the sensitive volume.
+// Float_t z detector local coordinate z in cm with respect to the
+// center of the sensitive volulme.
+// Output:
+// Int_t ix detector x time coordinate. Has the range 0<=ix<fNsamples.
+// Int_t iz detector z anode coordinate. Has the range 0<=iz<fNandoes.
+// A value of -1 for ix or iz indecates that this point is outside of the
+// detector segmentation as defined.
+
+ Float_t dx,dz;
+
+ ix = -1; // default values
+ iz = -1; // default values
+ dx = -fgkMicron2Cm*Dx(); // lower left edge in cm.
+ dz = -0.5*fgkMicron2Cm*Dz(); // lower left edge in cm.
+ if(x<dx || x>-dx) {
+ AliWarning(Form("Input argument %f out of range (%f, %f)",x,dx,-dx));
+ return kFALSE; // outside of defined volume.
+ }
+ if(z<dz || z>-dz) {
+ AliWarning(Form("Input argument %f out of range (%f, %f)",z,dz,-dz));
+ return kFALSE; // outside of defined volume.
+ }
+ GetPadIxz(x,z,ix,iz);
+ if(!fSetDriftSpeed){
+ ix=-999;
+ AliWarning("Drift speed not set: timebin is dummy");
+ return kFALSE;
+ }
+ return kTRUE; // Found ix and iz, return.
+}
+//______________________________________________________________________
+void AliITSsegmentationSDD::DetToLocal(Int_t ix,Int_t iz,Float_t &x,Float_t &z) const
+{
+// Transformation from Detector time bucket and anode coordiantes to Geant
+// detector centerd local coordinates (cm).
+// Input:
+// Int_t ix detector x time coordinate. Has the range 0<=ix<fNsamples.
+// Int_t iz detector z anode coordinate. Has the range 0<=iz<fNandoes.
+// Output:
+// Float_t x detector local coordinate x in cm with respect to the
+// center of the sensitive volume.
+// Float_t z detector local coordinate 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 -Dx()
+// or -0.5*Dz() is returned.
+ x=-Dx();
+ z=-0.5*Dz();
+ if(ix<0 || ix>=Npx()) {
+ AliWarning(Form("Input argument %d out of range (0, %d)",ix,Npx()));
+ return; // outside of detector
+ }
+ if(iz<0 || iz>=Npz()) {
+ AliWarning(Form("Input argument %d out of range (0, %d)",iz,Npz()));
+ return; // outside of detctor
+ }
+ GetPadCxz(ix,iz,x,z);
+ if(!fSetDriftSpeed){
+ x=-9999.;
+ AliWarning("Drift speed not set: x coord. is dummy");
+ }
+ return; // Found x and z, return.
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff