/**************************************************************************
* 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 1.6 2000/01/21 15:45:23 fca
New Version from Alla
Revision 1.5 2000/01/19 17:17:15 fca
Introducing a list of lists of hits -- more hits allowed for detector now
Revision 1.4 1999/11/12 15:04:00 fca
Modifications from A.Maevskaya
Revision 1.3 1999/09/29 09:24:29 fca
Introduction of the Copyright and cvs Log
*/
///////////////////////////////////////////////////////////////////////////////
// //
// START (T-Zero) Detector //
// This class contains the base procedures for the START //
// detector //
// //
//Begin_Html
/*
The responsible person for this module is
Alla Maevskaia.
*/ //End_Html // // // // /////////////////////////////////////////////////////////////////////////////// #include#include #include "TMath.h" #include "TTUBE.h" #include "TNode.h" #include "TRandom.h" #include "TGeometry.h" #include "AliRun.h" #include "AliSTART.h" #include "AliSTARTdigit.h" #include "AliMC.h" #include "AliSTARThit.h" #include "AliSTARTvertex.h" ClassImp(AliSTART) AliSTARTdigit *digits; //_____________________________________________________________________________ AliSTART::AliSTART() { // // Default constructor for class AliSTART // fIshunt = 0; fHits = 0; fDigits = 0; } //_____________________________________________________________________________ AliSTART::AliSTART(const char *name, const char *title) : AliDetector(name,title) { // // Standard constructor for START Detector // // // Initialise Hit array fHits = new TClonesArray("AliSTARThit", 405); // gAlice->AddHitList(fHits); // fDigits = new TClonesArray("AliSTARTdigit",500); fIshunt = 0; fIdSens = 0; SetMarkerColor(kRed); } //_____________________________________________________________________________ void AliSTART::AddHit(Int_t track, Int_t *vol, Float_t *hits) { // // Add a START hit // TClonesArray &lhits = *fHits; new(lhits[fNhits++]) AliSTARThit(fIshunt,track,vol,hits); } //_____________________________________________________________________________ void AliSTART::AddDigit(Int_t *tracks,Int_t *digits) { // Add a START digit to the list // printf (" AddDigit*******"); // TClonesArray &ldigits = *fDigits; // new(ldigits[fNdigits++]) AliSTARTdigit(tracks,digits); } //_____________________________________________________________________________ void AliSTART::BuildGeometry() { // // Build simple ROOT TNode geometry for event display // TNode *Node, *Top; const int kColorSTART = 19; // Top=gAlice->GetGeometry()->GetNode("alice"); // START define the different volumes new TRotMatrix("rot999","rot999", 90,0,90,90,180,0); new TTUBE("S_STR1","START volume 1","void",5.,10.7,5.3); Top->cd(); Node = new TNode("STR1","STR1","S_STR1",0,0,75.,""); Node->SetLineColor(kColorSTART); fNodes->Add(Node); new TTUBE("S_STR2","START volume 2","void",5.,10.7,5.3); Top->cd(); Node = new TNode("STR2","STR2","S_STR2",0,0,-75,"rot999"); Node->SetLineColor(kColorSTART); fNodes->Add(Node); } //_____________________________________________________________________________ Int_t AliSTART::DistanceToPrimitive(Int_t px, Int_t py) { // // Calculate the distance from the mouse to the START on the screen // Dummy routine // return 9999; } //------------------------------------------------------------------------- void AliSTART::Init() { // // Initialis the START after it has been built Int_t i; // printf("\n"); for(i=0;i<35;i++) printf("*"); printf(" START_INIT "); for(i=0;i<35;i++) printf("*"); printf("\n"); // // Here the START initialisation code (if any!) for(i=0;i<80;i++) printf("*"); printf("\n"); // // // fIdSensRad=gMC->VolId("PTOP"); // fIdSensPC =gMC->VolId("T0PC"); } //--------------------------------------------------------------------------- void AliSTART::MakeBranch(Option_t* option) { AliSTARTdigit *digits; // Create Tree branches for the START. Int_t buffersize = 400; char branchname[10]; sprintf(branchname,"%s",GetName()); AliDetector::MakeBranch(option); TTree *TD = gAlice->TreeD(); digits = new AliSTARTdigit(); TD->Branch(branchname,"AliSTARTdigit",&digits, buffersize); printf("Making Branch %s for digits\n",branchname); /* gAlice->TreeR()->Branch(branchname,"Int_t",&fZposit, buffersize); printf("Making Branch %s for vertex position %d\n",branchname); */ } //_____________________________________________________________________________ void AliSTART::Hit2digit(Int_t evnum) { Float_t x,y,z,e; Int_t nbytes = 0; Int_t j,hit; Int_t nhits; Int_t volume,pmt; char nameTH[8],nameTD[8]; Float_t timediff,timeright,timeleft,timeav; Float_t besttimeright,besttimeleft,meanTime; Int_t channel_width=10; TParticle *particle; AliSTARThit *startHit; Int_t buffersize=256; Int_t split=1; digits= new AliSTARTdigit(); TBranch *bDig=0; /* // Create histograms TH1F *hTimediff = new TH1F("hTimediff","Time different",100,-2,2); TH1F *hMeanTime = new TH1F("hMeanTime","Mean Time",100,2.2,2.8); TH1F *hTime1stright = new TH1F("hTime1stright","Time flight of 1st particle right", 100,1.5,3.2); TH1F *hTime1stleft = new TH1F("hTime1sleft","Time flight of 1st particle left",100,1.5,3.2); */ // AliSTART *START = (AliSTART*) gAlice->GetDetector("START"); // Event ------------------------- LOOP sprintf(nameTD,"TreeD%d",evnum); TTree *TD = new TTree(nameTD,"START"); bDig = TD->Branch("START","AliSTARTdigit",&digits,buffersize,split); besttimeright=9999.; besttimeleft=9999.; Int_t Timediff=0; Int_t Timeav=0; Int_t nparticles = gAlice->GetEvent(evnum); if (nparticles <= 0) return; printf("\n nparticles %d\n",nparticles); TClonesArray *Particles = gAlice->Particles(); sprintf(nameTH,"TreeH%d",evnum); printf("%s\n",nameTH); TTree *TH = gAlice->TreeH(); Int_t ntracks = (Int_t) TH->GetEntries(); if (ntracks<=0) return; // Start loop on tracks in the hits containers for (Int_t track=0; track ResetHits(); nbytes += TH->GetEvent(track); particle=(TParticle*)Particles->UncheckedAt(track); nhits =fHits->GetEntriesFast(); for (hit=0;hit UncheckedAt(hit); pmt=startHit->fPmt; e=startHit->fEtot; x=startHit->fX; y=startHit->fY; volume = startHit->fVolume; if(volume==1){ timeright = startHit->fTime; if(timeright fTime; // printf("timeleft %f\n",timeleft); if(timeleft Gaus(besttimeright,0.05); Float_t besttimeleftGaus=gRandom->Gaus(besttimeleft,0.05); timediff=besttimerightGaus-besttimeleftGaus; meanTime=(besttimerightGaus+besttimeleftGaus)/2.; if ( TMath::Abs(timediff)<2. && meanTime<3.) { //we assume centre of bunch is 5ns after TTS signal //TOF values are relative of the end of bunch // hTimediff->Fill(timediff); //hMeanTime->Fill(meanTime); Float_t pp_bunch=25; pp_bunch=pp_bunch-10/2; Float_t t1=1000.*besttimeleftGaus; Float_t t2=1000.*besttimerightGaus; t1=t1/channel_width+pp_bunch; //time in ps to channel_width t2=t2/channel_width+pp_bunch; //time in ps to channel_width timeav=(t1+t2)/2.; // Time to TDC signal // 256 channels for timediff, range 1ns timediff=128+1000*timediff/channel_width; // time in ps Timeav = (Int_t)(timeav); // time in ps Timediff = (Int_t)(timediff); // time in ps digits->Set(Timeav,Timediff); TD->Fill(); digits->MyDump(); TD->Write(); } //timediff } // end macro