/************************************************************************** * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * * * Author: The ALICE Off-line Project. * * Contributors are mentioned in the code where appropriate. * * * * Permission to use, copy, modify and distribute this software and its * * documentation strictly for non-commercial purposes is hereby granted * * without fee, provided that the above copyright notice appears in all * * copies and that both the copyright notice and this permission notice * * appear in the supporting documentation. The authors make no claims * * about the suitability of this software for any purpose. It is * * provided "as is" without express or implied warranty. * **************************************************************************/ /* $Id$ */ ///////////////////////////////////////////////////////// // Manager and hits classes for set:MUON version 0 // ///////////////////////////////////////////////////////// #include #include #include #include #include #include #include "AliCallf77.h" #include "AliConst.h" #include "AliMUONChamber.h" #include "AliMUONChamberGeometry.h" #include "AliMUONConstants.h" #include "AliMUONFactory.h" #include "AliMUONHit.h" #include "AliMUONPadHit.h" #include "AliMUONv0.h" #include "AliMagF.h" #include "AliRun.h" #include "AliMC.h" ClassImp(AliMUONv0) //___________________________________________ AliMUONv0::AliMUONv0() : AliMUON() { // Constructor fChambers = 0; } //___________________________________________ AliMUONv0::AliMUONv0(const char *name, const char *title) : AliMUON(name,title) { // Constructor AliMUONFactory factory; factory.Build(this, title); } void AliMUONv0::CreateGeometry() { // Creates coarse geometry for hit density simulations Int_t *idtmed = fIdtmed->GetArray()-1099; // Float_t zpos, dAlu, tpar[3]; Int_t idAir=idtmed[1100]; Int_t idAlu=idtmed[1103]; AliMUONChamber *iChamber; // Loop over all chambers (tracking and trigger) for (Int_t ch = 0; ch < AliMUONConstants::NCh(); ch++) { char alu[8]; char gas[8]; iChamber=(AliMUONChamber*) (*fChambers)[ch]; // Z of the chamber zpos=iChamber->Z(); dAlu=iChamber->DAlu(); if (ch < AliMUONConstants::NTrackingCh()) { // tracking chambers sprintf(alu,"SA0%1d",ch); sprintf(gas,"SG0%1d",ch); } else { // trigger chambers sprintf(alu,"SA%2d",ch); sprintf(gas,"SG%2d",ch); } // tpar[0] = iChamber->RInner(); tpar[1] = iChamber->ROuter(); tpar[2] = (dAlu+0.2)/2.; if (ch !=4 && ch !=5) { gMC->Gsvolu(alu, "TUBE", idAlu, tpar, 3); tpar[2] = 0.1; gMC->Gsvolu(gas, "TUBE", idAir, tpar, 3); } else { gMC->Gsvolu(alu, "TUBE", idAlu, tpar, 3); tpar[2] = 0.1; gMC->Gsvolu(gas, "TUBE", idAir, tpar, 3); } gMC->Gspos(gas, 1, alu, 0., 0., 0., 0, "ONLY"); if (ch == 4 || ch ==5) { if (gMC->VolId("DDIP")) { gMC->Gspos(alu, 1, "DDIP", 0., 0., zpos, 0, "ONLY"); } else { gMC->Gspos(alu, 1, "ALIC", 0., 0., zpos, 0, "ONLY"); } } else { gMC->Gspos(alu, 1, "ALIC", 0., 0., zpos, 0, "ONLY"); } } } //___________________________________________ void AliMUONv0::CreateMaterials() { // Creates materials for coarse geometry AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500); AliMaterial( 9, "ALUMINIUM$", 26.98, 13. , 2.7, 8.9, 37.2); Float_t epsil = .001; // Tracking precision, Float_t stemax = -1.; // Maximum displacement for multiple scat Float_t tmaxfd = -20.; // Maximum angle due to field deflection Float_t deemax = -.3; // Maximum fractional energy loss, DLS Float_t stmin = -.8; Int_t isxfld = gAlice->Field()->Integ(); Float_t sxmgmx = gAlice->Field()->Max(); // // Air AliMedium(1, "AIR_CH_US ", 15, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin); AliMedium(4, "ALU_CH_US ", 9, 0, isxfld, sxmgmx, tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin); } void AliMUONv0::Init() { // // Initialize Tracking Chambers // char vName[8]; printf("\n\n\n Start Init for version 0 - CPC chamber type\n\n\n"); for (Int_t i=0; iInit(); // Set sensitive volume Id if (i < AliMUONConstants::NTrackingCh()) { // tracking chambers sprintf(vName,"SG0%1d",i); } else { // trigger chambers sprintf(vName,"SG%2d",i); } //((AliMUONChamber*) (*fChambers)[i])->SetGid(gMC->VolId(vName)); ((AliMUONChamber*) (*fChambers)[i]) ->GetGeometry()->SetSensitiveVolume(gMC->VolId(vName)); } } void AliMUONv0::StepManager() { // // Step manager for hit density simulations Int_t copy, id; static Int_t idvol; static Int_t vol[2]; Int_t ipart; TLorentzVector pos; TLorentzVector mom; Float_t theta,phi; // modifs perso static Float_t hits[15]; TClonesArray &lhits = *fHits; // // Only gas gap inside chamber // Tag chambers and record hits when track enters idvol=-1; id=gMC->CurrentVolID(copy); for (Int_t i=1; i<=AliMUONConstants::NCh(); i++) { //if(id==((AliMUONChamber*)(*fChambers)[i-1])->GetGid()){ if ( ((AliMUONChamber*)(*fChambers)[i-1])->IsSensId(id) ) { vol[0]=i; idvol=i-1; } } if (idvol == -1) return; // // Get current particle id (ipart), track position (pos) and momentum (mom) gMC->TrackPosition(pos); gMC->TrackMomentum(mom); ipart = gMC->TrackPid(); // // record hits when track enters ... if( !(gMC->TrackCharge()) ) return; if( gMC->IsTrackEntering()) { // printf("\n Particle entering %f %f %f", pos[0], pos[1], pos[2] ); Double_t tc = mom[0]*mom[0]+mom[1]*mom[1]; Double_t rt = TMath::Sqrt(tc); theta = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg; phi = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg; hits[0] = Float_t(ipart); // Geant3 particle type hits[1] = pos[0]; // X-position for hit hits[2] = pos[1]; // Y-position for hit hits[3] = pos[2]; // Z-position for hit hits[4] = theta; // theta angle of incidence hits[5] = phi; // phi angle of incidence hits[8] = -1; // first padhit hits[9] = -1; // last pad hit hits[10] = mom[3]; // hit Energy hits[11] = mom[0]; // Px hits[12] = mom[1]; // Py hits[13] = mom[2]; // Pz hits[14] = gMC->TrackTime(); // time of flight new(lhits[fNhits++]) AliMUONHit(fIshunt,gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,hits); } // if( gMC->IsTrackExiting()) gMC->StopTrack(); }