1 /**************************************************************************
2 * Copyright(c) 1998-2000, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
16 #include "AliRICHDigitizer.h"
18 #include "AliRICHDigit.h"
20 #include <AliRunLoader.h>
21 #include "AliRunDigitizer.h"
22 #include <AliLoader.h>
26 ClassImp(AliRICHDigitizer)
28 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
29 void AliRICHDigitizer::Exec(Option_t*)
31 // This methode is responsible for merging sdigits to a list of digits
32 //Disintegration leeds to the fact that one hit affects several neighbouring pads, which means that the same pad might be affected by few hits.
33 AliDebug(1,Form("Start with %i input(s) for event %i",fManager->GetNinputs(),fManager->GetOutputEventNr()));
34 //First we read all sdigits from all inputs
35 AliRunLoader *pInRunLoader=0;//in and out Run loaders
36 AliLoader *pInRichLoader=0;//in and out RICH loaders
37 TClonesArray sdigs("AliRICHDigit");//tmp storage for sdigits sum up from all input files
39 for(Int_t inFileN=0;inFileN<fManager->GetNinputs();inFileN++){//files loop
40 pInRunLoader = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(inFileN)); //get run loader from current input
41 pInRichLoader = pInRunLoader->GetLoader("RICHLoader"); if(pInRichLoader==0) continue; //no RICH in this input, check the next input
42 if (!pInRunLoader->GetAliRun()) pInRunLoader->LoadgAlice();
43 AliRICH* pInRich=(AliRICH*)pInRunLoader->GetAliRun()->GetDetector("RICH"); //take RICH from current input
44 pInRichLoader->LoadSDigits(); pInRichLoader->TreeS()->GetEntry(0); //take list of RICH sdigits from current input
45 AliDebug(1,Form("input %i has %i sdigits",inFileN,pInRich->SdiLst()->GetEntries()));
46 for(Int_t i=0;i<pInRich->SdiLst()->GetEntries();i++){ //collect sdigits from current input
47 AliRICHDigit *pSDig=(AliRICHDigit*)pInRich->SdiLst()->At(i);
48 pSDig->AddTidOffset(fManager->GetMask(inFileN)); //apply TID shift since all inputs count tracks independently starting from 0
49 new(sdigs[total++]) AliRICHDigit(*pSDig);
51 pInRichLoader->UnloadSDigits(); pInRich->SdiReset(); //close current input and reset
54 //PH if(sdigs.GetEntries()==0) return; //no sdigits collected, nothing to convert
56 AliRunLoader *pOutRunLoader = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName()); //open output stream (only 1 possible)
57 AliLoader *pOutRichLoader = pOutRunLoader->GetLoader("RICHLoader"); //take output RICH loader
58 AliRICH *pOutRich = (AliRICH*)pOutRunLoader->GetAliRun()->GetDetector("RICH"); //take output RICH
59 pOutRichLoader->MakeTree("D"); pOutRich->MakeBranch("D"); //create TreeD in output stream
61 Sdi2Dig(&sdigs,pOutRich->DigLst());
63 pOutRichLoader->TreeD()->Fill(); //fill the output tree with the list of digits
64 pOutRichLoader->WriteDigits("OVERWRITE"); //serialize them to file
66 sdigs.Clear(); //remove all tmp sdigits
67 pOutRichLoader->UnloadDigits(); pOutRich->DigReset();
69 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
70 void AliRICHDigitizer::Sdi2Dig(TClonesArray *pSdiLst,TObjArray *pDigLst)
72 // Converts list of sdigits to 7 lists of digits, one per each chamber
73 // Arguments: pSDigLst - list of all sdigits
74 // pDigLst - list of 7 lists of digits
77 TClonesArray *pLst[7]; Int_t iCnt[7];
79 for(Int_t i=0;i<7;i++){
80 pLst[i]=(TClonesArray*)(*pDigLst)[i];
81 iCnt[i]=pLst[i]->GetEntries(); //in principle those lists should be empty
86 Int_t iPad=-1,iCh=-1,iNdigPad=-1,aTids[3]={-1,-1,-1}; Float_t q=-1;
87 for(Int_t i=0;i<pSdiLst->GetEntries();i++){ //sdigits loop (sorted)
88 AliRICHDigit *pSdig=(AliRICHDigit*)pSdiLst->At(i); //take current sdigit
89 if(pSdig->Pad()==iPad){ //if the same pad
90 q+=pSdig->Q(); //sum up charge
91 iNdigPad++; if(iNdigPad<=3) aTids[iNdigPad-1]=pSdig->GetTrack(0); //collect TID
94 if(i!=0 && AliRICHDigit::IsOverTh(q)) new((*pLst[iCh])[iCnt[iCh]++]) AliRICHDigit(iPad,(Int_t)q,aTids); //do not create digit for the very first sdigit
95 iPad=pSdig->Pad(); iCh=AliRICHDigit::A2C(iPad); //new sdigit comes, reset collectors
97 aTids[0]=pSdig->GetTrack(0);aTids[1]=aTids[2]=-1;
99 }//sdigits loop (sorted)
101 if(AliRICHDigit::IsOverTh(q)) new((*pLst[iCh])[iCnt[iCh]++]) AliRICHDigit(iPad,(Int_t)q,aTids); //add the last one, in case of empty sdigits list q=-1
102 //so digit is not created
104 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++