* about the suitability of this software for any purpose. It is *
* provided "as is" without express or implied warranty. *
**************************************************************************/
- /////////////////////////////////////////////////////////////////////
-// //
-// Forward Multiplicity detector based on Silicon version 0 //
-//
-//Begin Html
-/*
-<img src="gif/AliFMDv0Class.gif">
-*/
-//End Html
-// //
-// //
-//////////////////////////////////////////////////////////////////////
-
-#include <TMath.h>
-#include <TGeometry.h>
-#include <TTUBE.h>
-#include <TFile.h>
-#include <TTree.h>
-#include <TNode.h>
-#include <TClonesArray.h>
-#include <TLorentzVector.h>
-#include <TDirectory.h>
-#include "AliFMDv1.h"
-#include "AliFMDv0.h"
-#include "AliRun.h"
-#include "AliMC.h"
-#include <iostream.h>
-#include <fstream.h>
-#include "AliMagF.h"
-#include "AliFMDhit.h"
-#include "AliFMDdigit.h"
-#include <stdlib.h>
-//#include "TGeant3.h"
-//class TGeant3;
-ClassImp(AliFMDv1)
-
-//--------------------------------------------------------------------
-AliFMDv1::AliFMDv1(const char *name, const char *title):
- AliFMD(name,title)
-{
- //
- // Standart constructor for Forward Multiplicity Detector version 0
- //
- fIdSens1=0;
- fIdSens2=0;
- fIdSens3=0;
- fIdSens4=0;
- fIdSens5=0;
-// setBufferSize(128000);
-}
-//-------------------------------------------------------------------------
-void AliFMDv1::CreateGeometry()
-{
- //
- // Create the geometry of Forward Multiplicity Detector version 0
- //
- //Detector consists of 6 volumes:
- // 1st covered pseudorapidity interval from 3.3 to 2.0
- // and placed on 65cm in Z-direction;
- // 2nd - from 2.0 to 1.6 and Z=85 cm;
- // 3d - the same pseudorapidity interval as the 1st
- // but on the other side from the interaction point z=-65cm;
- // 4th - simmetricaly with the 2nd :
- // pseudorapidity from 2.0 to 1.6, Z=-85cm
- // 5th - from 3.6 to 4.7, Z=-270cm
- // 6th - from 4.5 to 5.5 , Z=-630cm.
- // Each part has 400mkm Si (sensetive area, detector itself),
- // 0.75cm of plastic simulated electronics material,
- // Al support ring 2cm thickness and 1cm width placed on
- // the outer radius of each Si disk;
- //
- // begin Html
- /*
- <img src="gif/AliFMDv0.gif">
- */
- //
-
-
- Int_t *idtmed = fIdtmed->GetArray();
-
- Int_t ifmd;
- Int_t idrotm[999];
- Float_t zfmd,par[3];
- char name[5], nameSi[5], nameSector[5], nameRing[5];
-
- Float_t rin[6], rout[6],zpos;
-
- Float_t etain[5]= {3.40, 2.29, 3.68, 2.29, 5.09};
- Float_t etaout[6]={2.01, 1.70, 2.28, 1.70, 3.68};
- // Float_t z[6]={64., 85., -64., -85., -270., -630};
- Float_t z[6]={62.8, 75.2, -83.4, -75.2, -340.};
- Float_t zDet=0.03;
- Float_t zElectronic=0.1;
- Float_t zSupport=1.;
- Float_t zFMD=1.;
-//-------------------------------------------------------------------
- // FMD
- //------------------------------------------------------------------
- cout<<" !!!!!!!!!!!New FMD geometry !!!!!!!!!"<<endl;
+/* $Id$ */
- AliMatrix(idrotm[901], 90, 0, 90, 90, 180, 0);
-
- // gMC->Gsvolu("GSI","TUBE", idtmed[1], par, 0);
- gMC->Gsvolu("GEL ","TUBE", idtmed[4], par, 0);
- gMC->Gsvolu("GSUP","TUBE", idtmed[2], par, 0);
-
- for (ifmd =0; ifmd < 5; ifmd++){
-
- sprintf(name,"FMD%d",ifmd+1);
- sprintf(nameSi,"GSI%d",ifmd+1);
- sprintf(nameSector,"GSC%d",ifmd+1);
- sprintf(nameRing,"GRN%d",ifmd+1);
- printf(name,nameSi);
-
- zfmd=TMath::Abs(z[ifmd]);
- printf("zfmd %f z[ifmd] %f",zfmd,z[ifmd]);
- AliFMD::Eta2Radius(etain[ifmd],zfmd,&rin[ifmd]);
- AliFMD::Eta2Radius(etaout[ifmd],zfmd,&rout[ifmd]);
-
- par[0]=rin[ifmd]; // pipe size
- par[1]=rout[ifmd];
- par[2]=zFMD/2;
- gMC->Gsvolu(name,"TUBE", idtmed[3], par, 3);
- // par[2]=zDet/2;
- gMC->Gsvolu(nameSi,"TUBE", idtmed[1], par, 0);
-
- printf ("rin %f rout %f ZFMD %f\n",par[0],par[1],z[ifmd]);
- if (z[ifmd] < 0){
- gMC->Gspos(name,1,"ALIC",0,0,z[ifmd],0, "ONLY");}
- else {
- gMC->Gspos(name,1,"ALIC",0,0,z[ifmd],idrotm[901], "ONLY");}
- //Silicon detector
- par[2]=zDet/2;
- zpos=zFMD/2 -par[2];
- gMC->Gsposp(nameSi,ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
- cout<<" Si "<<nameSi<<" ifmd "<<ifmd<<" rin "<<par[0]<<" rout "<<par[1]<<
- " zDet "<<par[2]<<endl;
- //Granularity
- cout<<"fSectorsSi1 "<<fSectorsSi1<<
- " fRingsSi1 "<<fRingsSi1<<
- " fSectorsSi2 "<<fSectorsSi2<<
- " fRingsSi2 "<<fRingsSi2<<endl;
- if(ifmd==1||ifmd==3)
- {
- gMC->Gsdvn(nameSector, nameSi , fSectorsSi2, 2);
- gMC->Gsdvn(nameRing, nameSector, fRingsSi2, 1);
- }
- else
- {
- gMC->Gsdvn(nameSector, nameSi , fSectorsSi1, 2);
- gMC->Gsdvn(nameRing, nameSector , fRingsSi1, 1);
- }
-
- //Plastic slice for electronics
- par[2]=zElectronic/2;
- zpos=zpos-zDet/2-par[2];
- gMC->Gsposp("GEL ",ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
-
- //Simple Al support
- par[1]=rout[ifmd];
- par[0]=rout[ifmd]-2;
- par[2]=zSupport/2;
- zpos=zpos-zElectronic/2-par[2];
- // gMC->Gsposp("GSUP",ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
-
-
- }
-
-}
-
-//------------------------------------------------------------------------
-void AliFMDv1::CreateMaterials()
-{
- Int_t isxfld = gAlice->Field()->Integ();
- Float_t sxmgmx = gAlice->Field()->Max();
-
- // Plastic CH
- Float_t aPlastic[2]={1.01,12.01};
- Float_t zPlastic[2]={1,6};
- Float_t wPlastic[2]={1,1};
- Float_t denPlastic=1.03;
- //
-
- //*** Definition Of avaible FMD materials ***
- AliMaterial(0, "Si chip$", 28.0855,14.,2.33,9.36,999);
- AliMaterial(1, "Al supprt$", 26.980,13.,2.70,8.9,999);
- AliMaterial(2, "FMD Air$", 14.61, 7.3, .001205, 30423.,999);
- AliMixture( 5, "Plastic$",aPlastic,zPlastic,denPlastic,-2,wPlastic);
-
-
-//**
- AliMedium(1, "Si chip$", 0, 1, isxfld, sxmgmx, 1., .001, 1., .001, .001);
- AliMedium(2, "Al support$", 1, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
- AliMedium(3, "FMD air$", 2, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
- AliMedium(4, "Plastic$", 5, 0,isxfld, sxmgmx, 10., .01, 1., .003, .003);
-
-
-
-}
-//---------------------------------------------------------------------
-void AliFMDv1::DrawDetector()
-{
-//
-// Draw a shaded view of the Forward multiplicity detector version 0
+//____________________________________________________________________
+//
+// Forward Multiplicity Detector based on Silicon wafers. This class
+// contains the base procedures for the Forward Multiplicity detector
+// Detector consists of 5 Si volumes covered pseudorapidity interval
+// from 1.7 to 5.1.
//
-
-AliMC* pMC = AliMC::GetMC();
-
-//Set ALIC mother transparent
-pMC->Gsatt("ALIC","SEEN",0);
+// This class contains the detailed version of the FMD - that is, hits
+// are produced during simulation.
+//
+// The actual code is done by various separate classes. Below is
+// diagram showing the relationship between the various FMD classes
+// that handles the geometry
//
-//Set volumes visible
-gMC->Gsatt("FMD1","SEEN",1);
-gMC->Gsatt("FMD2","SEEN",1);
-gMC->Gsatt("FMD3","SEEN",1);
-gMC->Gsatt("FMD4","SEEN",1);
-gMC->Gsatt("FMD5","SEEN",1);
-
//
-gMC->Gdopt("hide","on");
-gMC->Gdopt("shad","on");
-gMC->SetClipBox(".");
-gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
-gMC->DefaultRange();
-gMC->Gdraw("alic",40,30,0,12,9.5,.2,0.2);
-gMC->Gdhead(1111,"Forward multiplicity detector");
-gMC->Gdopt("hide","off");
-}
-//-------------------------------------------------------------------
-void AliFMDv1::Init()
-{
-// Initialises version 0 of the Forward Multiplicity Detector
+// +----------+ +----------+
+// | AliFMDv1 | | AliFMDv1 |
+// +----------+ +----------+
+// | |
+// +----+--------------+
+// |
+// | +------------+ 1 +---------------+
+// | +- | AliFMDRing |<>--| AliFMDPolygon |
+// V 2 | +------------+ +---------------+
+// +--------+<>--+ |
+// | AliFMD | ^
+// +--------+<>--+ V 1..2
+// 3 | +-------------------+
+// +-| AliFMDSubDetector |
+// +-------------------+
+// ^
+// |
+// +-------------+-------------+
+// | | |
+// +---------+ +---------+ +---------+
+// | AliFMD1 | | AliFMD2 | | AliFMD3 |
+// +---------+ +---------+ +---------+
+//
//
-AliMC* gMC=AliMC::GetMC();
-AliFMD::Init();
-fIdSens1=gMC->VolId("GRN1");
-fIdSens2=gMC->VolId("GRN2");
-fIdSens3=gMC->VolId("GRN3");
-fIdSens4=gMC->VolId("GRN4");
-fIdSens5=gMC->VolId("GRN5");
-printf("*** FMD version 1 initialized ***\n");
-}
+// See also the class AliFMD for a more detailed explanation of the
+// various componets.
+#include <TVirtualMC.h> // ROOT_TVirtualMC
+#include <AliRun.h> // ALIRUN_H
+#include <AliMC.h> // ALIMC_H
+#include <AliLog.h> // ALILOG_H
+#include "AliFMDv1.h" // ALIFMDV1_H
+
+//____________________________________________________________________
+ClassImp(AliFMDv1)
-//-------------------------------------------------------------------
-void AliFMDv1::StepManager()
+//____________________________________________________________________
+void
+AliFMDv1::StepManager()
{
//
// Called for every step in the Forward Multiplicity Detector
//
- Int_t id,copy,copy1,copy2;
- static Float_t hits[9];
- static Int_t vol[3];
- static Float_t de;
- TLorentzVector pos;
- TLorentzVector mom;
-
+ // The procedure is as follows:
+ //
+ // - IF NOT track is alive THEN RETURN ENDIF
+ // - IF NOT particle is charged THEN RETURN ENDIF
+ // - IF NOT volume name is "STRI" or "STRO" THEN RETURN ENDIF
+ // - Get strip number (volume copy # minus 1)
+ // - Get phi division number (mother volume copy #)
+ // - Get module number (grand-mother volume copy #)
+ // - section # = 2 * module # + phi division # - 1
+ // - Get ring Id from volume name
+ // - Get detector # from grand-grand-grand-mother volume name
+ // - Get pointer to sub-detector object.
+ // - Get track position
+ // - IF track is entering volume AND track is inside real shape THEN
+ // - Reset energy deposited
+ // - Get track momentum
+ // - Get particle ID #
+ /// - ENDIF
+ // - IF track is inside volume AND inside real shape THEN
+ /// - Update energy deposited
+ // - ENDIF
+ // - IF track is inside real shape AND (track is leaving volume,
+ // or it died, or it is stopped THEN
+ // - Create a hit
+ // - ENDIF
+ //
+ //
+ AliDebug(10, Form("Is inside %s", gMC->CurrentVolName()));
- TClonesArray &lhits = *fHits;
- AliMC* gMC=AliMC::GetMC();
- if(!gMC->IsTrackAlive()) return; // particle has disappeared
+ // If the track is gone, return
+ if (!gMC->IsTrackAlive()) return;
+
+ // Only process charged particles
+ if(TMath::Abs(gMC->TrackCharge()) <= 0) return;
+
+ // Only do stuff is the track is in one of the strips.
+ // TString vol(gMC->CurrentVolName());
+ // if (!vol.Contains("STR")) return;
+ Int_t copy;
+ Int_t volumeId = gMC->CurrentVolID(copy);
+ // The ring ID is encoded in the volume name
+ Char_t ring = '\0';
+ if (volumeId == fInner->GetStripId()) ring = 'I';
+ else if (volumeId == fOuter->GetStripId()) ring = 'O';
+ else return;
+
+ // Get the strip number. Note, that GEANT numbers divisions from 1,
+ // so we subtract one
+ Int_t strip = copy - 1;
+
+ // Get the phi division of the module
+ Int_t phiDiv; // * The phi division number (1 or 2)
+ gMC->CurrentVolOffID(1, phiDiv); // in the module
+
+ // Active volume number - not used.
+ // Int_t active;
+ // gMC->CurrentVolOffID(2, active);
+
+ // Get the module number in the ring.
+ Int_t module;
+ gMC->CurrentVolOffID(3, module);
+
+ // Ring copy number - the same as the detector number - not used
+ // Int_t ringCopy; // * Ring copy number
+ // gMC->CurrentVolOffID(4, ringCopy); // Same as detector number
+
+ // Get the detector number from the path name
+ Int_t detector = Int_t((gMC->CurrentVolOffName(5)[3]) - 48);
- Float_t charge = gMC->TrackCharge();
- if(TMath::Abs(charge)<=0.) return; //take only charged particles
+ // The sector number, calculated from module and phi division #
+ Int_t sector = 2 * module + phiDiv - 1;
- // printf(" in StepManeger \n");
- id=gMC->CurrentVolID(copy);
- //((TGeant3*)gMC)->Gpcxyz();
-// Check the sensetive volume
- if(id==fIdSens1||id==fIdSens2||id==fIdSens3||id==fIdSens4||id==fIdSens5)
- {
- if(gMC->IsTrackEntering())
- {
- vol[2]=copy;
- gMC->CurrentVolOffID(1,copy1);
- vol[1]=copy1;
- gMC->CurrentVolOffID(2,copy2);
- vol[0]=copy2;
- // printf("vol0 %d vol1 %d vol2 %d\n",vol[0],vol[1],vol[2]);
- gMC->TrackPosition(pos);
- hits[0]=pos[0];
- hits[1]=pos[1];
- hits[2]=pos[2];
- // printf(" Zpos %f \n",hits[2]);
- gMC->TrackMomentum(mom);
- hits[3]=mom[0];
- hits[4]=mom[1];
- hits[5]=mom[2];
-
- Int_t iPart= gMC->TrackPid();
- Int_t partId=gMC->IdFromPDG(iPart);
- hits[7]=partId;
- hits[8]=1e9*gMC->TrackTime();
- de=0.;
- }
- if(gMC->IsTrackInside()){
- de=de+1000.*gMC->Edep();
- // cout<<" de "<<de<<endl;
- // cout<<" step "<<gMC->TrackStep()<<endl;
- }
-
- if(gMC->IsTrackExiting()
- ||gMC->IsTrackDisappeared()||
- gMC->IsTrackStop())
- {
- hits[6]=de+1000.*gMC->Edep();
- // cout<<" idSens "<<id<<endl;
- //cout<<" hits "<<hits[6]<<endl;
- // for(Int_t i=0; i<9; i++) printf(" i %d hits %f \n",i,hits[i]);
- new(lhits[fNhits++]) AliFMDhit(fIshunt,gAlice->CurrentTrack(),vol,hits);
- } // IsTrackExiting()
- }
+ // Get a pointer to the sub detector structure
+ AliFMDSubDetector* det = 0;
+ switch (detector) {
+ case 1: det = fFMD1; break;
+ case 2: det = fFMD2; break;
+ case 3: det = fFMD3; break;
}
-//--------------------------------------------------------------------------
-
-void AliFMDv1::Response( Float_t Edep)
-{
- Float_t I=1.664*0.04*2.33/22400; // = 0.69e-6;
- Float_t chargeOnly=Edep/I;
- //Add noise ~500electrons
- Int_t charge=500;
- if (Edep>0)
- charge=Int_t(gRandom->Gaus(chargeOnly,500));
- }
-
-
-
-
-
-
+ if (!det) return;
+
+ // Get the current track position
+ TLorentzVector v;
+ gMC->TrackPosition(v);
+ // Check that the track is actually within the active area
+ Bool_t isWithin = det->CheckHit(ring, module, v.X(), v.Y());
+ Bool_t entering = gMC->IsTrackEntering() && isWithin;
+ Bool_t inside = gMC->IsTrackInside() && isWithin;
+ Bool_t out = (gMC->IsTrackExiting()
+ || gMC->IsTrackDisappeared()
+ || gMC->IsTrackStop()
+ || !isWithin);
+
+ AliDebug(2, Form("Is inside FMD%d%c[%02d,%03d]: particle is %s",
+ detector, ring, sector, strip,
+ (entering ? "entering" :
+ (inside ? "inside" :
+ "exiting"))));
+
+ // Reset the energy deposition for this track, and update some of
+ // our parameters.
+ if (entering) {
+ fCurrentDeltaE = 0;
+
+ // Get production vertex and momentum of the track
+ fCurrentV = v;
+ gMC->TrackMomentum(fCurrentP);
+ fCurrentPdg = gMC->IdFromPDG(gMC->TrackPid());
+
+ // if (fAnalyser)
+ // fAnalyser->Update(detector, ring, isWithin, v.X(), v.Y());
+ }
+
+ // If the track is inside, then update the energy deposition
+ if (inside && fCurrentDeltaE >= 0)
+ fCurrentDeltaE += 1000 * gMC->Edep();
+
+ // The track exits the volume, or it disappeared in the volume, or
+ // the track is stopped because it no longer fulfills the cuts
+ // defined, then we create a hit.
+ if (out && fCurrentDeltaE >= 0) {
+ fCurrentDeltaE += 1000 * gMC->Edep();
+
+ AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(),
+ detector, ring, sector, strip,
+ fCurrentV.X(), fCurrentV.Y(), fCurrentV.Z(),
+ fCurrentP.X(), fCurrentP.Y(), fCurrentP.Z(),
+ fCurrentDeltaE, fCurrentPdg, fCurrentV.T());
+ fCurrentDeltaE = -1;
+ }
+}
+//___________________________________________________________________
+//
+// EOF
+//
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff