X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=HMPID%2FAliHMPIDDigitizer.cxx;h=cd58e66d0fb804abae9479ea6b2bb93fd3487556;hb=4178b5c7ed8261863bd588cdd933cc6a20452437;hp=2667f1439fe5b1e7a706ac10e3215840d2d8c6d3;hpb=3c6274c1849fbc3ebd7554982d9948ddf9430756;p=u%2Fmrichter%2FAliRoot.git

diff --git a/HMPID/AliHMPIDDigitizer.cxx b/HMPID/AliHMPIDDigitizer.cxx
index 2667f1439fe..cd58e66d0fb 100644
--- a/HMPID/AliHMPIDDigitizer.cxx
+++ b/HMPID/AliHMPIDDigitizer.cxx
@@ -12,19 +12,25 @@
  * about the suitability of this software for any purpose. It is          *
  * provided "as is" without express or implied warranty.                  *
  **************************************************************************/
-
-#include "AliHMPIDDigitizer.h"
-#include "AliHMPID.h"
-#include "AliHMPIDDigit.h"
+//.
+//.
+//.
+//.
+//.
 #include <AliRun.h>
 #include <AliRunLoader.h>
 #include "AliRunDigitizer.h"
 #include <AliLoader.h>
 #include <AliLog.h>
-
+#include "AliHMPIDDigitizer.h"
+#include "AliHMPIDDigit.h"
+#include "AliHMPID.h"
+#include "AliHMPIDParam.h"
+#include <TRandom.h>
 
 ClassImp(AliHMPIDDigitizer)
 
+Bool_t AliHMPIDDigitizer::fgDoNoise=kFALSE;
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 void AliHMPIDDigitizer::Exec(Option_t*)
 {
@@ -55,7 +61,8 @@ void AliHMPIDDigitizer::Exec(Option_t*)
   
   AliRunLoader *pOutRunLoader  = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());    //open output stream (only 1 possible)
   AliLoader    *pOutRichLoader = pOutRunLoader->GetLoader("HMPIDLoader");                         //take output HMPID loader
-  AliHMPID      *pOutRich       = (AliHMPID*)pOutRunLoader->GetAliRun()->GetDetector("HMPID");      //take output HMPID
+  AliRun *pArun = pOutRunLoader->GetAliRun();
+  AliHMPID      *pOutRich       = (AliHMPID*)pArun->GetDetector("HMPID");      //take output HMPID
   pOutRichLoader->MakeTree("D");   pOutRich->MakeBranch("D");                                    //create TreeD in output stream
 
   Sdi2Dig(&sdigs,pOutRich->DigLst());
@@ -75,11 +82,21 @@ void AliHMPIDDigitizer::Sdi2Dig(TClonesArray *pSdiLst,TObjArray *pDigLst)
 //   Returns: none  
   
   TClonesArray *pLst[7]; Int_t iCnt[7];
-  
+
+  TRandom *rnd = new TRandom();  
   for(Int_t i=0;i<7;i++){
     pLst[i]=(TClonesArray*)(*pDigLst)[i];
     iCnt[i]=0; if(pLst[i]->GetEntries()!=0) AliErrorClass("Some of digits lists is not empty");         //in principle those lists should be empty                                                                       
   }
+
+  // make noise array
+  Float_t arrNoise[7][6][80][48];
+  if(fgDoNoise) {
+    for (Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++)
+      for (Int_t iPc=AliHMPIDParam::kMinPc;iPc<=AliHMPIDParam::kMaxPc;iPc++)
+        for(Int_t iPx=AliHMPIDParam::kMinPx;iPx<=AliHMPIDParam::kMaxPx;iPx++)
+          for(Int_t iPy=AliHMPIDParam::kMinPy;iPy<=AliHMPIDParam::kMaxPy;iPy++) arrNoise[iCh][iPc][iPx][iPy] = rnd->Gaus(0,1);
+  }  
   
   pSdiLst->Sort();  
                      
@@ -91,14 +108,26 @@ void AliHMPIDDigitizer::Sdi2Dig(TClonesArray *pSdiLst,TObjArray *pDigLst)
       iNdigPad++; if(iNdigPad<=3) aTids[iNdigPad-1]=pSdig->GetTrack(0);                                        //collect TID 
       continue;
     }
-    if(i!=0 && AliHMPIDDigit::IsOverTh(q))  new((*pLst[iCh])[iCnt[iCh]++]) AliHMPIDDigit(iPad,(Int_t)q,aTids);   //do not create digit for the very first sdigit 
-    iPad=pSdig->Pad(); iCh=AliHMPIDDigit::A2C(iPad);                                                            //new sdigit comes, reset collectors
+    if(i!=0 && AliHMPIDParam::IsOverTh(q))  new((*pLst[iCh])[iCnt[iCh]++]) AliHMPIDDigit(iPad,(Int_t)q,aTids);   //do not create digit for the very first sdigit 
+    iPad=pSdig->Pad(); iCh=AliHMPIDParam::A2C(iPad);                                                            //new sdigit comes, reset collectors
     iNdigPad=1;
     aTids[0]=pSdig->GetTrack(0);aTids[1]=aTids[2]=-1; 
-    q=pSdig->Q();    
+    q=pSdig->Q();
+    if(fgDoNoise) q+=arrNoise[iCh][pSdig->Pc()][pSdig->PadPcX()][pSdig->PadPcY()];
+    arrNoise[iCh][pSdig->Pc()][pSdig->PadPcX()][pSdig->PadPcY()]=0;
   }//sdigits loop (sorted)
   
-  if(AliHMPIDDigit::IsOverTh(q))  new((*pLst[iCh])[iCnt[iCh]++]) AliHMPIDDigit(iPad,(Int_t)q,aTids);           //add the last one, in case of empty sdigits list q=-1
-                                                                                                               //so digit is not created    
+  if(AliHMPIDParam::IsOverTh(q))  new((*pLst[iCh])[iCnt[iCh]++]) AliHMPIDDigit(iPad,(Int_t)q,aTids);           //add the last one, in case of empty sdigits list q=-1
+// add noise pad above threshold with no signal merged...if any
+  if(!fgDoNoise) return;
+  aTids[0]=aTids[1]=aTids[2]=-1;
+  for (Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++)
+    for (Int_t iPc=AliHMPIDParam::kMinPc;iPc<=AliHMPIDParam::kMaxPc;iPc++)
+      for(Int_t iPx=AliHMPIDParam::kMinPx;iPx<=AliHMPIDParam::kMaxPx;iPx++)
+        for(Int_t iPy=AliHMPIDParam::kMinPy;iPy<=AliHMPIDParam::kMaxPy;iPy++) {
+          Float_t q = arrNoise[iCh][iPc][iPx][iPy];
+          if(AliHMPIDParam::IsOverTh(q)) new((*pLst[iCh])[iCnt[iCh]++]) AliHMPIDDigit(AliHMPIDParam::Abs(iCh,iPc,iPx,iPy),(Int_t)q,aTids);
+        }
+        
 }//Sdi2Dig()
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++