1 #ifndef AliMFTSegmentation_H
2 #define AliMFTSegmentation_H
4 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * See cxx source for full Copyright notice */
7 //====================================================================================================================================================
9 // Segmentation class for the planes of the ALICE Muon Forward Tracker
11 // Contact author: antonio.uras@cern.ch
13 //====================================================================================================================================================
17 #include "TClonesArray.h"
19 #include "AliMFTPlane.h"
22 //====================================================================================================================================================
24 class AliMFTSegmentation : public TObject {
29 AliMFTSegmentation(const Char_t *nameGeomFile);
31 virtual ~AliMFTSegmentation() {}
33 THnSparseC* GetDetElem(Int_t detElemID);
35 Int_t GetDetElemID(Int_t plane, Int_t detElem) { return fNMaxDetElemPerPlane*plane + detElem; }
37 Bool_t Hit2PixelID(Double_t xHit, Double_t yHit, Int_t detElemID, Int_t &xPixel, Int_t &yPixel);
39 Double_t GetPixelSizeX(Int_t detElemID) { THnSparseC *detElem = GetDetElem(detElemID); return detElem->GetAxis(0)->GetBinWidth(1); }
40 Double_t GetPixelSizeY(Int_t detElemID) { THnSparseC *detElem = GetDetElem(detElemID); return detElem->GetAxis(1)->GetBinWidth(1); }
41 Double_t GetPixelSizeZ(Int_t detElemID) { THnSparseC *detElem = GetDetElem(detElemID); return detElem->GetAxis(2)->GetBinWidth(1); }
43 Double_t GetPixelCenterX(Int_t detElemID, Int_t iPixel) { THnSparseC *detElem = GetDetElem(detElemID); return detElem->GetAxis(0)->GetBinCenter(iPixel+1); }
44 Double_t GetPixelCenterY(Int_t detElemID, Int_t iPixel) { THnSparseC *detElem = GetDetElem(detElemID); return detElem->GetAxis(1)->GetBinCenter(iPixel+1); }
45 Double_t GetPixelCenterZ(Int_t detElemID, Int_t iPixel) { THnSparseC *detElem = GetDetElem(detElemID); return -1.*(detElem->GetAxis(2)->GetBinCenter(iPixel+1)); }
47 Int_t GetNPlanes() { return fMFTPlanes->GetEntries(); }
49 AliMFTPlane* GetPlane(Int_t iPlane) { if (iPlane>=0 && iPlane<fMFTPlanes->GetEntries()) return (AliMFTPlane*) fMFTPlanes->At(iPlane); else return NULL; }
53 static const Int_t fNMaxPlanes = 20; // max number of MFT planes
54 static const Double_t fRadiusMin = 2.225; // minimum radial distance of the MFT sensors. To be carefully coordinated with fDetElemSuperposition
55 static const Double_t fDetElemSuperposition = 0.05; // superposition between bands tasselling the MFT planes, for having a full acceptance coverage
56 // even in case of 10 degrees inclined tracks
57 static const Double_t fHeightDetElem = 0.5; // height of the active volume bands composing the planes
58 static const Double_t fSupportExtMargin = 0.3; // minimum border size between the end of the support plane and the sensors
60 static const Int_t fNMaxDetElemPerPlane = 1000;
62 TClonesArray *fMFTPlanes;
66 AliMFTSegmentation(const AliMFTSegmentation &source);
67 AliMFTSegmentation& operator=(const AliMFTSegmentation &source);
69 ClassDef(AliMFTSegmentation,1)
73 //====================================================================================================================================================