/************************************************************************** * 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. * **************************************************************************/ /* $Log$ Revision 1.13 2001/11/06 18:29:36 dibari minor correcttion of Taligent rules Revision 1.12 2001/09/07 08:38:10 hristov Pointers initialised to 0 in the default constructors Revision 1.11 2001/05/10 12:35:39 jbarbosa Update. Revision 1.10 2001/02/23 17:21:17 jbarbosa Re-definition of IntPH() to accomodate for wire sag effect. Revision 1.9 2001/02/13 20:15:34 jbarbosa Removed fNsec (number of cathodes - obsolete) related loops and calls. Revision 1.8 2000/12/18 17:45:43 jbarbosa Cleaned up PadHits object. Revision 1.7 2000/10/03 21:44:09 morsch Use AliSegmentation and AliHit abstract base classes. Revision 1.6 2000/10/02 15:44:37 jbarbosa Fixed forward declarations. Revision 1.5 2000/07/13 16:19:45 fca Mainly coding conventions + some small bug fixes Revision 1.4 2000/06/30 16:48:58 dibari New function GenerateTresholds() for pedestal simulation. Revision 1.3 2000/06/12 15:17:58 jbarbosa Cleaned up version. Revision 1.2 2000/05/18 13:45:57 jbarbosa Fixed feedback photon origin coordinates Revision 1.1 2000/04/19 12:57:20 morsch Newly structured and updated version (JB, AM) */ #include "AliRICHChamber.h" #include #include #include #include #include #include #include #include #include #include ClassImp(AliRICHChamber) AliRICHChamber::AliRICHChamber() { // default ctor fpRotMatrix = 0; fSegmentation = 0; fResponse = 0; fGeometry = 0; fReconstruction = 0; fTresh = 0; frMin = 0.1; frMax = 140; for(Int_t i=0; i<50; ++i) fIndexMap[i] = 0; } void AliRICHChamber::LocaltoGlobal(Float_t pos[3],Float_t Globalpos[3]) { // Local coordinates to global coordinates transformation Double_t *pMatrix; pMatrix = fpRotMatrix->GetMatrix(); Globalpos[0]=pos[0]*pMatrix[0]+pos[1]*pMatrix[3]+pos[2]*pMatrix[6]; Globalpos[1]=pos[0]*pMatrix[1]+pos[1]*pMatrix[4]+pos[2]*pMatrix[7]; Globalpos[2]=pos[0]*pMatrix[2]+pos[1]*pMatrix[5]+pos[2]*pMatrix[8]; Globalpos[0]+=fX; Globalpos[1]+=fY; Globalpos[2]+=fZ; } void AliRICHChamber::GlobaltoLocal(Float_t pos[3],Float_t Localpos[3]) { // // Global coordinates to local coordinates transformation // TMatrix matrixCopy(3,3); Double_t *pMatrixOrig = fpRotMatrix->GetMatrix(); for(Int_t i=0;i<3;i++) { for(Int_t j=0;j<3;j++) matrixCopy(j,i)=pMatrixOrig[j+3*i]; } matrixCopy.Invert(); Localpos[0] = pos[0] - fX; Localpos[1] = pos[1] - fY; Localpos[2] = pos[2] - fZ; Localpos[0]=Localpos[0]*matrixCopy(0,0)+Localpos[1]*matrixCopy(0,1)+Localpos[2]*matrixCopy(0,2); Localpos[1]=Localpos[0]*matrixCopy(1,0)+Localpos[1]*matrixCopy(1,1)+Localpos[2]*matrixCopy(1,2); Localpos[2]=Localpos[0]*matrixCopy(2,0)+Localpos[1]*matrixCopy(2,1)+Localpos[2]*matrixCopy(2,2); } void AliRICHChamber::DisIntegration(Float_t eloss, Float_t xhit, Float_t yhit, Int_t& nnew,Float_t newclust[5][500],ResponseType res) { // // Generates pad hits (simulated cluster) // using the segmentation and the response model Float_t dx, dy; Float_t local[3]; //Float_t source[3]; Float_t global[3]; // // Width of the integration area // dx=(fResponse->SigmaIntegration())*(fResponse->ChargeSpreadX()); dy=(fResponse->SigmaIntegration())*(fResponse->ChargeSpreadY()); // // Get pulse height from energy loss and generate feedback photons Float_t qtot=0; local[0]=xhit; // z-position of the wires relative to the RICH mother volume // (2 mmm before CsI) old value: 6.076 local[1]=1.276 + fGeometry->GetGapThickness()/2 - .2; //printf("AliRICHChamber feedback origin:%f",local[1]); local[2]=yhit; LocaltoGlobal(local,global); Int_t nFp=0; // To calculate wire sag, the origin of y-position must be the middle of the photcathode AliRICHSegmentationV0* segmentation = (AliRICHSegmentationV0*) GetSegmentationModel(); Float_t newy; if (yhit>0) newy = yhit - segmentation->GetPadPlaneLength()/2; else newy = yhit + segmentation->GetPadPlaneLength()/2; if (res==kMip) { qtot = fResponse->IntPH(eloss, newy); nFp = fResponse->FeedBackPhotons(global,qtot); //printf("feedbacks:%d\n",nFp); } else if (res==kCerenkov) { qtot = fResponse->IntPH(newy); nFp = fResponse->FeedBackPhotons(global,qtot); //printf("feedbacks:%d\n",nFp); } //printf("Feedbacks:%d\n",nFp); // // Loop Over Pads Float_t qcheck=0, qp=0; nnew=0; for (fSegmentation->FirstPad(xhit, yhit, 0, dx, dy); fSegmentation->MorePads(); fSegmentation->NextPad()) { qp= fResponse->IntXY(fSegmentation); qp= TMath::Abs(qp); //printf("Qp:%f Qtot %f\n",qp,qtot); if (qp > 1.e-4) { qcheck+=qp; // // --- store signal information newclust[0][nnew]=qp*qtot; newclust[1][nnew]=fSegmentation->Ix(); newclust[2][nnew]=fSegmentation->Iy(); newclust[3][nnew]=fSegmentation->ISector(); nnew++; //printf("Newcluster:%d\n",i); } } // Pad loop //if (fSegmentation->ISector()==2) //printf("Nnew:%d\n\n\n\n",nnew); } void AliRICHChamber::GenerateTresholds() { // Generates random treshold charges for all pads //printf("Pads : %dx%d\n",fSegmentation->Npx(),fSegmentation->Npy()); Int_t nx = fSegmentation->Npx(); Int_t ny = fSegmentation->Npy(); //Int_t size=nx*ny; //printf("Size:%d\n",size); fTresh = new AliRICHTresholdMap(fSegmentation); //printf("Generating tresholds...\n"); for(Int_t i=-nx/2;iGaus(50, 10)); //Int_t pedestal =0; fTresh->SetHit(i,j,pedestal); //printf("Pad %d %d has pedestal %d.\n",i,j,pedestal); } } }