* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.1.4.1 2000/05/08 14:45:55 cblume
-Bug fix in RotateBack(). Geometry update
-
-Revision 1.1 2000/02/28 19:00:44 cblume
-Add new TRD classes
-
-*/
+/* $Id$ */
///////////////////////////////////////////////////////////////////////////////
// //
// //
///////////////////////////////////////////////////////////////////////////////
+
+#include <TError.h>
+
+#include "AliRunLoader.h"
#include "AliTRDgeometry.h"
-#include "AliTRDrecPoint.h"
+#include "AliTRDpadPlane.h"
+
+#include "AliRun.h"
+#include "AliTRD.h"
+#include "AliTRDcalibDB.h"
+#include "AliTRDCommonParam.h"
ClassImp(AliTRDgeometry)
+//_____________________________________________________________________________
+
+ //
+ // The geometry constants
+ //
+ const Int_t AliTRDgeometry::fgkNsect = kNsect;
+ const Int_t AliTRDgeometry::fgkNplan = kNplan;
+ const Int_t AliTRDgeometry::fgkNcham = kNcham;
+ const Int_t AliTRDgeometry::fgkNdet = kNdet;
+
+ //
+ // Dimensions of the detector
+ //
+
+ // Inner and outer radius of the mother volumes
+ const Float_t AliTRDgeometry::fgkRmin = 294.0;
+ const Float_t AliTRDgeometry::fgkRmax = 368.0;
+
+ // Upper and lower length of the mother volumes
+ const Float_t AliTRDgeometry::fgkZmax1 = 378.35;
+ const Float_t AliTRDgeometry::fgkZmax2 = 302.0;
+
+ // Parameter of the BTR mother volumes
+ const Float_t AliTRDgeometry::fgkSheight = 74.0;
+ const Float_t AliTRDgeometry::fgkSwidth1 = 99.613;
+ const Float_t AliTRDgeometry::fgkSwidth2 = 125.707;
+ const Float_t AliTRDgeometry::fgkSlenTR1 = 751.0;
+ const Float_t AliTRDgeometry::fgkSlenTR2 = 313.5;
+ const Float_t AliTRDgeometry::fgkSlenTR3 = 159.5;
+
+ // The super module side plates
+ const Float_t AliTRDgeometry::fgkSMpltT = 0.2;
+ const Float_t AliTRDgeometry::fgkSMgapT = 0.5;
+
+ // Height of different chamber parts
+ // Radiator
+ const Float_t AliTRDgeometry::fgkCraH = 4.8;
+ // Drift region
+ const Float_t AliTRDgeometry::fgkCdrH = 3.0;
+ // Amplification region
+ const Float_t AliTRDgeometry::fgkCamH = 0.7;
+ // Readout
+ const Float_t AliTRDgeometry::fgkCroH = 2.316;
+ // Total height
+ const Float_t AliTRDgeometry::fgkCH = AliTRDgeometry::fgkCraH
+ + AliTRDgeometry::fgkCdrH
+ + AliTRDgeometry::fgkCamH
+ + AliTRDgeometry::fgkCroH;
+
+ // Vertical spacing of the chambers
+ const Float_t AliTRDgeometry::fgkVspace = 1.784;
+
+ // Horizontal spacing of the chambers
+ const Float_t AliTRDgeometry::fgkHspace = 2.0;
+
+ // Thicknesses of different parts of the chamber frame
+ // Lower aluminum frame
+ const Float_t AliTRDgeometry::fgkCalT = 0.3;
+ // Lower G10 frame sides
+ const Float_t AliTRDgeometry::fgkCclsT = 0.3;
+ // Lower G10 frame front
+ const Float_t AliTRDgeometry::fgkCclfT = 1.0;
+ // Upper G10 frame
+ const Float_t AliTRDgeometry::fgkCcuT = 0.9;
+ // Upper Al frame
+ const Float_t AliTRDgeometry::fgkCauT = 1.5;
+
+ // Additional width of the readout chamber frames
+ const Float_t AliTRDgeometry::fgkCroW = 0.9;
+
+ // Difference of outer chamber width and pad plane width
+ //const Float_t AliTRDgeometry::fgkCpadW = 1.0;
+ const Float_t AliTRDgeometry::fgkCpadW = 0.0;
+ const Float_t AliTRDgeometry::fgkRpadW = 1.0;
+
+ //
+ // Thickness of the the material layers
+ //
+ const Float_t AliTRDgeometry::fgkRaThick = 0.3646;
+ const Float_t AliTRDgeometry::fgkMyThick = 0.005;
+ const Float_t AliTRDgeometry::fgkDrThick = AliTRDgeometry::fgkCdrH;
+ const Float_t AliTRDgeometry::fgkAmThick = AliTRDgeometry::fgkCamH;
+ const Float_t AliTRDgeometry::fgkXeThick = AliTRDgeometry::fgkDrThick
+ + AliTRDgeometry::fgkAmThick;
+ const Float_t AliTRDgeometry::fgkCuThick = 0.001;
+ const Float_t AliTRDgeometry::fgkSuThick = 0.06;
+ const Float_t AliTRDgeometry::fgkFeThick = 0.0044;
+ const Float_t AliTRDgeometry::fgkCoThick = 0.02;
+ const Float_t AliTRDgeometry::fgkWaThick = 0.02;
+
+ //
+ // Position of the material layers
+ //
+ const Float_t AliTRDgeometry::fgkRaZpos = -1.50;
+ const Float_t AliTRDgeometry::fgkMyZpos = 0.895;
+ const Float_t AliTRDgeometry::fgkDrZpos = 2.4;
+ const Float_t AliTRDgeometry::fgkAmZpos = 0.0;
+ const Float_t AliTRDgeometry::fgkCuZpos = -0.9995;
+ const Float_t AliTRDgeometry::fgkSuZpos = 0.0000;
+ const Float_t AliTRDgeometry::fgkFeZpos = 0.0322;
+ const Float_t AliTRDgeometry::fgkCoZpos = 0.97;
+ const Float_t AliTRDgeometry::fgkWaZpos = 0.99;
+
+ const Double_t AliTRDgeometry::fgkTime0Base = Rmin() + CraHght() + CdrHght() + CamHght()/2.;
+ const Float_t AliTRDgeometry::fgkTime0[6] = { fgkTime0Base + 0 * (Cheight() + Cspace()),
+ fgkTime0Base + 1 * (Cheight() + Cspace()),
+ fgkTime0Base + 2 * (Cheight() + Cspace()),
+ fgkTime0Base + 3 * (Cheight() + Cspace()),
+ fgkTime0Base + 4 * (Cheight() + Cspace()),
+ fgkTime0Base + 5 * (Cheight() + Cspace()) };
+
//_____________________________________________________________________________
AliTRDgeometry::AliTRDgeometry():AliGeometry()
{
//
Init();
-
}
//_____________________________________________________________________________
AliTRDgeometry::~AliTRDgeometry()
{
-
+ //
+ // AliTRDgeometry destructor
+ //
}
//_____________________________________________________________________________
//
// Initializes the geometry parameter
//
-
- Int_t iplan;
-
- // The width of the chambers
- fCwidth[0] = 99.6;
- fCwidth[1] = 104.1;
- fCwidth[2] = 108.5;
- fCwidth[3] = 112.9;
- fCwidth[4] = 117.4;
- fCwidth[5] = 121.8;
-
- // The default pad dimensions
- fRowPadSize = 4.5;
- fColPadSize = 1.0;
- fTimeBinSize = 0.1;
-
// The maximum number of pads
// and the position of pad 0,0,0
//
// chambers seen from the top:
// +----------------------------+
// | |
- // | | ^
- // | | rphi|
- // | | |
- // |0 | |
- // +----------------------------+ +------>
+ // | | ^
+ // | | rphi|
+ // | | |
+ // |0 | |
+ // +----------------------------+ +------>
// z
- // chambers seen from the side: ^
- // +----------------------------+ time|
- // | | |
- // |0 | |
- // +----------------------------+ +------>
+ // chambers seen from the side: ^
+ // +----------------------------+ drift|
+ // |0 | |
+ // | | |
+ // +----------------------------+ +------>
// z
//
+ // IMPORTANT: time bin 0 is now the first one in the drift region
+ // closest to the readout !!!
+ //
- // The pad column (rphi-direction)
- for (iplan = 0; iplan < kNplan; iplan++) {
- fColMax[iplan] = 1 + TMath::Nint((fCwidth[iplan] - 2. * kCcthick)
- / fColPadSize - 0.5);
- fCol0[iplan] = -fCwidth[iplan]/2. + kCcthick;
- }
+ Int_t icham;
+ Int_t iplan;
+ Int_t isect;
- // The time bucket
- fTimeMax = 1 + TMath::Nint(kDrThick / fTimeBinSize - 0.5);
- for (iplan = 0; iplan < kNplan; iplan++) {
- fTime0[iplan] = kRmin + kCcframe/2. + kDrZpos - 0.5 * kDrThick
- + iplan * (kCheight + kCspace);
- }
+ // The outer width of the chambers
+ //
+ // Changed with the introduction of
+ // the new layer 0. The old layer 6
+ // is removed.
+ fCwidth[0] = 90.4;
+ fCwidth[1] = 94.8;
+ fCwidth[2] = 99.3;
+ fCwidth[3] = 103.7;
+ fCwidth[4] = 108.1;
+ fCwidth[5] = 112.6;
+ // Old layer 6
+ // fCwidth[5] = 117.0;
+
+ // The outer lengths of the chambers
+ // Includes the spacings between the chambers!
+ // Changed with the introduction of
+ // the new layer 0. The old layer 6
+ // is removed.
+ Float_t length[kNplan][kNcham] = { { 124.0, 124.0, 110.0, 124.0, 124.0 }
+ , { 124.0, 124.0, 110.0, 124.0, 124.0 }
+ , { 131.0, 131.0, 110.0, 131.0, 131.0 }
+ , { 138.0, 138.0, 110.0, 138.0, 138.0 }
+ , { 145.0, 145.0, 110.0, 145.0, 145.0 }
+ , { 147.0, 147.0, 110.0, 147.0, 147.0 } };
+ // Old layer 6
+ // , { 147.0, 147.0, 110.0, 147.0, 147.0 } };
+
+ for (icham = 0; icham < kNcham; icham++) {
+ for (iplan = 0; iplan < kNplan; iplan++) {
+ fClength[iplan][icham] = length[iplan][icham];
+ fClengthPH[iplan][icham] = 0.0;
+ fClengthRH[iplan][icham] = 0.0;
+ }
+ }
+ // The rotation matrix elements
+ Float_t phi = 0;
+ for (isect = 0; isect < fgkNsect; isect++) {
+ phi = -2.0 * TMath::Pi() / (Float_t) fgkNsect * ((Float_t) isect + 0.5);
+ fRotA11[isect] = TMath::Cos(phi);
+ fRotA12[isect] = TMath::Sin(phi);
+ fRotA21[isect] = TMath::Sin(phi);
+ fRotA22[isect] = TMath::Cos(phi);
+ phi = -1.0 * phi;
+ fRotB11[isect] = TMath::Cos(phi);
+ fRotB12[isect] = TMath::Sin(phi);
+ fRotB21[isect] = TMath::Sin(phi);
+ fRotB22[isect] = TMath::Cos(phi);
+ }
+
}
//_____________________________________________________________________________
-void AliTRDgeometry::CreateGeometry(Int_t *idtmed)
+void AliTRDgeometry::CreateGeometry(Int_t* )
{
//
- // Create the TRD geometry
- //
- // Author: Christoph Blume (C.Blume@gsi.de) 20/07/99
- //
- // The volumes:
- // TRD1-3 (Air) --- The TRD mother volumes for one sector.
- // To be placed into the spaceframe.
- //
- // UAFI(/M/O) (Al) --- The aluminum frame of the inner(/middle/outer) chambers (readout)
- // UCFI(/M/O) (C) --- The carbon frame of the inner(/middle/outer) chambers
- // (driftchamber + radiator)
- // UAII(/M/O) (Air) --- The inner part of the readout of the inner(/middle/outer) chambers
- // UFII(/M/O) (Air) --- The inner part of the chamner and radiator of the
- // inner(/middle/outer) chambers
- //
- // The material layers in one chamber:
- // UL01 (G10) --- The gas seal of the radiator
- // UL02 (CO2) --- The gas in the radiator
- // UL03 (PE) --- The foil stack
- // UL04 (Mylar) --- Entrance window to the driftvolume and HV-cathode
- // UL05 (Xe) --- The driftvolume
- // UL06 (Xe) --- The amplification region
- //
- // UL07 (Cu) --- The pad plane
- // UL08 (G10) --- The Nomex honeycomb support structure
- // UL09 (Cu) --- FEE and signal lines
- // UL10 (PE) --- The cooling devices
- // UL11 (Water) --- The cooling water
-
- const Int_t npar_cha = 3;
-
- Float_t par_dum[3];
- Float_t par_cha[npar_cha];
-
- Float_t xpos, ypos, zpos;
-
- // The aluminum frames - readout + electronics (Al)
- // The inner chambers
- gMC->Gsvolu("UAFI","BOX ",idtmed[1301-1],par_dum,0);
- // The middle chambers
- gMC->Gsvolu("UAFM","BOX ",idtmed[1301-1],par_dum,0);
- // The outer chambers
- gMC->Gsvolu("UAFO","BOX ",idtmed[1301-1],par_dum,0);
-
- // The inner part of the aluminum frames (Air)
- // The inner chambers
- gMC->Gsvolu("UAII","BOX ",idtmed[1302-1],par_dum,0);
- // The middle chambers
- gMC->Gsvolu("UAIM","BOX ",idtmed[1302-1],par_dum,0);
- // The outer chambers
- gMC->Gsvolu("UAIO","BOX ",idtmed[1302-1],par_dum,0);
-
- // The carbon frames - radiator + driftchamber (C)
- // The inner chambers
- gMC->Gsvolu("UCFI","BOX ",idtmed[1307-1],par_dum,0);
- // The middle chambers
- gMC->Gsvolu("UCFM","BOX ",idtmed[1307-1],par_dum,0);
- // The outer chambers
- gMC->Gsvolu("UCFO","BOX ",idtmed[1307-1],par_dum,0);
-
- // The inner part of the carbon frames (Air)
- // The inner chambers
- gMC->Gsvolu("UCII","BOX ",idtmed[1302-1],par_dum,0);
- // The middle chambers
- gMC->Gsvolu("UCIM","BOX ",idtmed[1302-1],par_dum,0);
- // The outer chambers
- gMC->Gsvolu("UCIO","BOX ",idtmed[1302-1],par_dum,0);
-
- // The material layers inside the chambers
- par_cha[0] = -1.;
- par_cha[1] = -1.;
- // G10 layer (radiator seal)
- par_cha[2] = kSeThick/2;
- gMC->Gsvolu("UL01","BOX ",idtmed[1313-1],par_cha,npar_cha);
- // CO2 layer (radiator)
- par_cha[2] = kRaThick/2;
- gMC->Gsvolu("UL02","BOX ",idtmed[1312-1],par_cha,npar_cha);
- // PE layer (radiator)
- par_cha[2] = kPeThick/2;
- gMC->Gsvolu("UL03","BOX ",idtmed[1303-1],par_cha,npar_cha);
- // Mylar layer (entrance window + HV cathode)
- par_cha[2] = kMyThick/2;
- gMC->Gsvolu("UL04","BOX ",idtmed[1308-1],par_cha,npar_cha);
- // Xe/Isobutane layer (drift volume, sensitive)
- par_cha[2] = kDrThick/2.;
- gMC->Gsvolu("UL05","BOX ",idtmed[1309-1],par_cha,npar_cha);
- // Xe/Isobutane layer (amplification volume, not sensitive)
- par_cha[2] = kAmThick/2.;
- gMC->Gsvolu("UL06","BOX ",idtmed[1309-1],par_cha,npar_cha);
-
- // Cu layer (pad plane)
- par_cha[2] = kCuThick/2;
- gMC->Gsvolu("UL07","BOX ",idtmed[1305-1],par_cha,npar_cha);
- // G10 layer (support structure)
- par_cha[2] = kSuThick/2;
- gMC->Gsvolu("UL08","BOX ",idtmed[1313-1],par_cha,npar_cha);
- // Cu layer (FEE + signal lines)
- par_cha[2] = kFeThick/2;
- gMC->Gsvolu("UL09","BOX ",idtmed[1305-1],par_cha,npar_cha);
- // PE layer (cooling devices)
- par_cha[2] = kCoThick/2;
- gMC->Gsvolu("UL10","BOX ",idtmed[1303-1],par_cha,npar_cha);
- // Water layer (cooling)
- par_cha[2] = kWaThick/2;
- gMC->Gsvolu("UL11","BOX ",idtmed[1314-1],par_cha,npar_cha);
-
- // Position the layers in the chambers
- xpos = 0;
- ypos = 0;
-
- // G10 layer (radiator seal)
- zpos = kSeZpos;
- gMC->Gspos("UL01",1,"UCII",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL01",2,"UCIM",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL01",3,"UCIO",xpos,ypos,zpos,0,"ONLY");
- // CO2 layer (radiator)
- zpos = kRaZpos;
- gMC->Gspos("UL02",1,"UCII",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL02",2,"UCIM",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL02",3,"UCIO",xpos,ypos,zpos,0,"ONLY");
- // PE layer (radiator)
- zpos = 0;
- gMC->Gspos("UL03",1,"UL02",xpos,ypos,zpos,0,"ONLY");
- // Mylar layer (entrance window + HV cathode)
- zpos = kMyZpos;
- gMC->Gspos("UL04",1,"UCII",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL04",2,"UCIM",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL04",3,"UCIO",xpos,ypos,zpos,0,"ONLY");
- // Xe/Isobutane layer (drift volume)
- zpos = kDrZpos;
- gMC->Gspos("UL05",1,"UCII",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL05",2,"UCIM",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL05",3,"UCIO",xpos,ypos,zpos,0,"ONLY");
- // Xe/Isobutane layer (amplification volume)
- zpos = kAmZpos;
- gMC->Gspos("UL06",1,"UCII",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL06",2,"UCIM",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL06",3,"UCIO",xpos,ypos,zpos,0,"ONLY");
-
- // Cu layer (pad plane)
- zpos = kCuZpos;
- gMC->Gspos("UL07",1,"UAII",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL07",2,"UAIM",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL07",3,"UAIO",xpos,ypos,zpos,0,"ONLY");
- // G10 layer (support structure)
- zpos = kSuZpos;
- gMC->Gspos("UL08",1,"UAII",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL08",2,"UAIM",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL08",3,"UAIO",xpos,ypos,zpos,0,"ONLY");
- // Cu layer (FEE + signal lines)
- zpos = kFeZpos;
- gMC->Gspos("UL09",1,"UAII",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL09",2,"UAIM",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL09",3,"UAIO",xpos,ypos,zpos,0,"ONLY");
- // PE layer (cooling devices)
- zpos = kCoZpos;
- gMC->Gspos("UL10",1,"UAII",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL10",2,"UAIM",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL10",3,"UAIO",xpos,ypos,zpos,0,"ONLY");
- // Water layer (cooling)
- zpos = kWaZpos;
- gMC->Gspos("UL11",1,"UAII",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL11",1,"UAIM",xpos,ypos,zpos,0,"ONLY");
- gMC->Gspos("UL11",1,"UAIO",xpos,ypos,zpos,0,"ONLY");
+ // Create TRD geometry
+ //
}
//_____________________________________________________________________________
-Bool_t AliTRDgeometry::Local2Global(Int_t idet, Float_t *local, Float_t *global)
+Bool_t AliTRDgeometry::Local2Global(Int_t idet, Double_t *local
+ , Double_t *global) const
{
//
// Converts local pad-coordinates (row,col,time) into
// global ALICE reference frame coordinates (x,y,z)
//
- Int_t icham = GetChamber(idet); // Chamber info (0-4)
- Int_t isect = GetSector(idet); // Sector info (0-17)
- Int_t iplan = GetPlane(idet); // Plane info (0-5)
+ Int_t icham = GetChamber(idet); // Chamber info (0-4)
+ Int_t isect = GetSector(idet); // Sector info (0-17)
+ Int_t iplan = GetPlane(idet); // Plane info (0-5)
return Local2Global(iplan,icham,isect,local,global);
//_____________________________________________________________________________
Bool_t AliTRDgeometry::Local2Global(Int_t iplan, Int_t icham, Int_t isect
- , Float_t *local, Float_t *global)
+ , Double_t *local, Double_t *global) const
{
//
// Converts local pad-coordinates (row,col,time) into
// global ALICE reference frame coordinates (x,y,z)
//
- Int_t idet = GetDetector(iplan,icham,isect); // Detector number
+ AliTRDCommonParam* commonParam = AliTRDCommonParam::Instance();
+ if (!commonParam)
+ return kFALSE;
- Float_t padRow = local[0]; // Pad Row position
- Float_t padCol = local[1]; // Pad Column position
- Float_t timeSlice = local[2]; // Time "position"
+ AliTRDcalibDB* calibration = AliTRDcalibDB::Instance();
+ if (!calibration)
+ return kFALSE;
+
+ AliTRDpadPlane *padPlane = commonParam->GetPadPlane(iplan,icham);
- Float_t row0 = GetRow0(iplan,icham,isect);
- Float_t col0 = GetCol0(iplan);
- Float_t time0 = GetTime0(iplan);
+ // calculate (x,y,z) position in rotated chamber
+ Int_t row = ((Int_t) local[0]);
+ Int_t col = ((Int_t) local[1]);
+ Float_t timeSlice = local[2] + 0.5;
+ Float_t time0 = GetTime0(iplan);
- Float_t rot[3];
+ Int_t idet = GetDetector(iplan, icham, isect);
- // calculate (x,y,z) position in rotated chamber
- rot[0] = time0 + timeSlice * fTimeBinSize;
- rot[1] = col0 + padCol * fColPadSize;
- rot[2] = row0 + padRow * fRowPadSize;
+ Double_t rot[3];
+ rot[0] = time0 - (timeSlice - calibration->GetT0(idet, col, row))
+ * calibration->GetVdrift(idet, col, row)/calibration->GetSamplingFrequency();
+ rot[1] = padPlane->GetColPos(col) - 0.5 * padPlane->GetColSize(col);
+ rot[2] = padPlane->GetRowPos(row) - 0.5 * padPlane->GetRowSize(row);
// Rotate back to original position
return RotateBack(idet,rot,global);
}
//_____________________________________________________________________________
-Bool_t AliTRDgeometry::Rotate(Int_t d, Float_t *pos, Float_t *rot)
+Bool_t AliTRDgeometry::Global2Local(Int_t mode, Double_t *local, Double_t *global
+ , Int_t* index) const
+{
+ //
+ // Converts local pad-coordinates (row,col,time) into
+ // global ALICE reference frame coordinates (x,y,z)
+ //
+ // index[0] = plane number
+ // index[1] = chamber number
+ // index[2] = sector number
+ //
+ // mode=0 - local coordinate in y, z, x - rotated global
+ // mode=2 - local coordinate in pad, and pad row, x - rotated global
+ //
+
+ //Int_t idet = GetDetector(iplan,icham,isect); // Detector number
+ Int_t idet = GetDetector(index[0],index[1],index[2]); // Detector number
+ Rotate(idet,global,local);
+ if (mode==0) return kTRUE;
+ //
+ // Float_t row0 = par->GetRow0(iplan,icham,isect);
+ //Float_t col0 = par->GetCol0(iplan);
+ //Float_t time0 = GetTime0(iplan);
+ //
+ // mode 1 to be implemented later
+ // calculate (x,y,z) position in time bin pad row pad
+ //
+ //rot[0] = time0 - (timeSlice - par->GetTimeBefore())
+ // * par->GetDriftVelocity()/par->GetSamplingFrequency();
+ //rot[1] = col0 + padCol
+ // * par->GetColPadSize(iplan);
+ //rot[2] = row0 + padRow
+ // * par->GetRowPadSize(iplan,icham,isect);
+
+ return kTRUE;
+
+}
+
+//_____________________________________________________________________________
+Bool_t AliTRDgeometry::Global2Detector(Double_t global[3], Int_t index[3])
+{
+ //
+ // input = global position
+ // output = index
+ // index[0] = plane number
+ // index[1] = chamber number
+ // index[2] = sector number
+ //
+
+ Float_t fi;
+ //
+ fi = TMath::ATan2(global[1],global[0]);
+ if (fi<0) fi += 2*TMath::Pi();
+ index[2] = Int_t(TMath::Nint((fi - GetAlpha()/2.)/GetAlpha()));
+ //
+ //
+ Float_t locx = global[0] * fRotA11[index[2]] + global[1] * fRotA12[index[2]];
+ index[0] = 0;
+ Float_t max = locx - GetTime0(0);
+ for (Int_t iplane=1; iplane<fgkNplan;iplane++){
+ Float_t dist = TMath::Abs(locx - GetTime0(iplane));
+ if (dist < max){
+ index[0] = iplane;
+ max = dist;
+ }
+ }
+ Float_t theta = TMath::ATan2(global[2],locx);
+ index[1] = TMath::Nint(float(fgkNcham)*theta/(0.25*TMath::Pi()));
+ return kTRUE;
+
+}
+
+
+//_____________________________________________________________________________
+Bool_t AliTRDgeometry::Rotate(Int_t d, Double_t *pos, Double_t *rot) const
{
//
// Rotates all chambers in the position of sector 0 and transforms
// corresponding local frame <rot>.
//
- Int_t sector = GetSector(d);
+ Int_t sector = GetSector(d);
- Float_t phi = -2.0 * kPI / (Float_t) kNsect * ((Float_t) sector + 0.5);
-
- rot[0] = pos[0] * TMath::Cos(phi) + pos[1] * TMath::Sin(phi);
- rot[1] = -pos[0] * TMath::Sin(phi) + pos[1] * TMath::Cos(phi);
+ rot[0] = pos[0] * fRotA11[sector] + pos[1] * fRotA12[sector];
+ rot[1] = -pos[0] * fRotA21[sector] + pos[1] * fRotA22[sector];
rot[2] = pos[2];
return kTRUE;
}
//_____________________________________________________________________________
-Bool_t AliTRDgeometry::RotateBack(Int_t d, Float_t *rot, Float_t *pos)
+Bool_t AliTRDgeometry::RotateBack(Int_t d, Double_t *rot, Double_t *pos) const
{
//
// Rotates a chambers from the position of sector 0 into its
// coordinates <rot> into the coordinates of the ALICE restframe <pos>.
//
- Int_t sector = GetSector(d);
-
- Float_t phi = 2.0 * kPI / (Float_t) kNsect * ((Float_t) sector + 0.5);
+ Int_t sector = GetSector(d);
- pos[0] = rot[0] * TMath::Cos(phi) + rot[1] * TMath::Sin(phi);
- pos[1] = -rot[0] * TMath::Sin(phi) + rot[1] * TMath::Cos(phi);
+ pos[0] = rot[0] * fRotB11[sector] + rot[1] * fRotB12[sector];
+ pos[1] = -rot[0] * fRotB21[sector] + rot[1] * fRotB22[sector];
pos[2] = rot[2];
return kTRUE;
}
//_____________________________________________________________________________
-Int_t AliTRDgeometry::GetDetector(Int_t p, Int_t c, Int_t s)
+Int_t AliTRDgeometry::GetDetectorSec(Int_t p, Int_t c)
{
//
- // Convert plane / chamber / sector into detector number
+ // Convert plane / chamber into detector number for one single sector
//
- return (p + c * kNplan + s * kNplan * kNcham);
+ return (p + c * fgkNplan);
}
//_____________________________________________________________________________
-Int_t AliTRDgeometry::GetPlane(Int_t d)
+Int_t AliTRDgeometry::GetDetector(Int_t p, Int_t c, Int_t s)
{
//
- // Reconstruct the plane number from the detector number
+ // Convert plane / chamber / sector into detector number
//
- return ((Int_t) (d % kNplan));
+ return (p + c * fgkNplan + s * fgkNplan * fgkNcham);
}
//_____________________________________________________________________________
-Int_t AliTRDgeometry::GetChamber(Int_t d)
+Int_t AliTRDgeometry::GetPlane(Int_t d) const
{
//
- // Reconstruct the chamber number from the detector number
+ // Reconstruct the plane number from the detector number
//
- return ((Int_t) (d % (kNplan * kNcham)) / kNplan);
+ return ((Int_t) (d % fgkNplan));
}
//_____________________________________________________________________________
-Int_t AliTRDgeometry::GetSector(Int_t d)
+Int_t AliTRDgeometry::GetChamber(Int_t d) const
{
//
- // Reconstruct the sector number from the detector number
+ // Reconstruct the chamber number from the detector number
//
- return ((Int_t) (d / (kNplan * kNcham)));
+ return ((Int_t) (d % (fgkNplan * fgkNcham)) / fgkNplan);
}
//_____________________________________________________________________________
-void AliTRDgeometry::GetGlobal(const AliRecPoint *p, TVector3 &pos, TMatrix &mat)
+Int_t AliTRDgeometry::GetSector(Int_t d) const
{
- //
- // Returns the global coordinate and error matrix of a AliTRDrecPoint
+ //
+ // Reconstruct the sector number from the detector number
//
- GetGlobal(p,pos);
+ return ((Int_t) (d / (fgkNplan * fgkNcham)));
}
//_____________________________________________________________________________
-void AliTRDgeometry::GetGlobal(const AliRecPoint *p, TVector3 &pos)
+AliTRDgeometry* AliTRDgeometry::GetGeometry(AliRunLoader* runLoader)
{
- //
- // Returns the global coordinate and error matrix of a AliTRDrecPoint
+ //
+ // load the geometry from the galice file
//
- Int_t detector = ((AliTRDrecPoint *) p)->GetDetector();
+ if (!runLoader) runLoader = AliRunLoader::GetRunLoader();
+ if (!runLoader) {
+ ::Error("AliTRDgeometry::GetGeometry", "No run loader");
+ return NULL;
+ }
- Float_t global[3];
- Float_t local[3];
- local[0] = ((AliTRDrecPoint *) p)->GetLocalRow();
- local[1] = ((AliTRDrecPoint *) p)->GetLocalCol();
- local[2] = ((AliTRDrecPoint *) p)->GetLocalTime();
+ TDirectory* saveDir = gDirectory;
+ runLoader->CdGAFile();
- if (Local2Global(detector,local,global)) {
- pos.SetX(global[0]);
- pos.SetY(global[1]);
- pos.SetZ(global[2]);
- }
- else {
- pos.SetX(0.0);
- pos.SetY(0.0);
- pos.SetZ(0.0);
+ // Try from the galice.root file
+ AliTRDgeometry* geom = (AliTRDgeometry*) gDirectory->Get("TRDgeometry");
+
+ if (!geom) {
+ // It is not in the file, try to get it from gAlice,
+ // which corresponds to the run loader
+ AliTRD * trd = (AliTRD*)runLoader->GetAliRun()->GetDetector("TRD");
+ geom = trd->GetGeometry();
}
+ if (!geom) ::Error("AliTRDgeometry::GetGeometry", "Geometry not found");
+ saveDir->cd();
+ return geom;
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff