]> git.uio.no Git - u/mrichter/AliRoot.git/blobdiff - ITS/AliITSsimulationSDD.cxx
First version of the SDD DA calibration classes. AliITSOnlineSDDBase - for measuremen...
[u/mrichter/AliRoot.git] / ITS / AliITSsimulationSDD.cxx
index 6700205060effdd14cf7a71b1ac1341687a007c3..e5af80cf2018f790c17b0a483fc192017fc02fe4 100644 (file)
 #include <stdio.h>
 #include <string.h>
 
-#include <TSystem.h>
-#include <TROOT.h>
-#include <TStopwatch.h>
 #include <TCanvas.h>
 #include <TF1.h>
-#include <TRandom.h>
 #include <TH1.h>
 #include <TFile.h>
-#include <TVector.h>
-#include <TArrayI.h>
-#include <TArrayF.h>
-
-#include "AliRun.h"
+#include <TRandom.h>
+#include <TROOT.h>
 #include "AliITS.h"
-#include "AliITShit.h"
-#include "AliITSdigitSDD.h"
+#include "AliITSMapA2.h"
+#include "AliITSRawData.h"
 #include "AliITSdigitSPD.h"
+#include "AliITSetfSDD.h"
 #include "AliITSmodule.h"
 #include "AliITSpList.h"
-#include "AliITSMapA1.h"
-#include "AliITSMapA2.h"
-#include "AliITSetfSDD.h"
-#include "AliITSRawData.h"
-#include "AliITSHuffman.h"
-#include "AliITSgeom.h"
-#include "AliITSsegmentation.h"
-#include "AliITSresponse.h"
-#include "AliITSsegmentationSDD.h"
 #include "AliITSresponseSDD.h"
+#include "AliITSCalibrationSDD.h"
+#include "AliITSsegmentationSDD.h"
 #include "AliITSsimulationSDD.h"
+#include "AliLog.h"
+#include "AliRun.h"
 
 ClassImp(AliITSsimulationSDD)
 ////////////////////////////////////////////////////////////////////////
-// Version: 0
-// Written by Piergiorgio Cerello
-// November 23 1999
-//
-// AliITSsimulationSDD is the simulation of SDDs.
-  //
-//Begin_Html
-/*
-<img src="picts/ITS/AliITShit_Class_Diagram.gif">
-</pre>
-<br clear=left>
-<font size=+2 color=red>
-<p>This show the relasionships between the ITS hit class and the rest of Aliroot.
-</font>
-<pre>
-*/
-//End_Html
+// Version: 0                                                         //
+// Written by Piergiorgio Cerello                                     //
+// November 23 1999                                                   //
+//                                                                    //
+// AliITSsimulationSDD is the simulation of SDDs.                     //
+////////////////////////////////////////////////////////////////////////
+
 //______________________________________________________________________
 Int_t power(Int_t b, Int_t e) {
     // compute b to the e power, where both b and e are Int_ts.
@@ -137,27 +116,35 @@ void FastFourierTransform(AliITSetfSDD *alisddetf,Double_t *real,
     return;
 }
 //______________________________________________________________________
-AliITSsimulationSDD::AliITSsimulationSDD() {
+AliITSsimulationSDD::AliITSsimulationSDD():
+AliITSsimulation(),
+fITS(0),
+fHitMap2(0),
+fHitSigMap2(0),
+fHitNoiMap2(0),
+fStream(0),
+fElectronics(0),
+fInZR(0),
+fInZI(0),
+fOutZR(0),
+fOutZI(0),
+fAnodeFire(0),
+fHis(0),
+fD(),
+fT1(),
+fT2(),
+fTol(),
+fTreeB(0),
+fParam(0),
+fFileName(),
+fFlag(kFALSE),
+fCheckNoise(kFALSE),
+fCrosstalkFlag(kFALSE),
+fDoFFT(1),
+fNofMaps(0),
+fMaxNofSamples(0),
+fScaleSize(0){
     // Default constructor
-
-    fResponse      = 0;
-    fSegmentation  = 0;
-    fHis           = 0;
-//    fpList         = 0;
-    fHitMap2       = 0;
-    fHitSigMap2    = 0;
-    fHitNoiMap2    = 0;
-    fElectronics   = 0;
-    fStream        = 0;
-    fInZR          = 0;
-    fInZI          = 0;
-    fOutZR         = 0;
-    fOutZI         = 0;
-    fNofMaps       = 0;
-    fMaxNofSamples = 0;
-    fITS           = 0;
-    fTreeB         = 0;
-    fAnodeFire     = 0;
     SetScaleFourier();
     SetPerpendTracksFlag();
     SetCrosstalkFlag();
@@ -165,17 +152,48 @@ AliITSsimulationSDD::AliITSsimulationSDD() {
     SetCheckNoise();
 }
 //______________________________________________________________________
-AliITSsimulationSDD::AliITSsimulationSDD(AliITSsimulationSDD &source) :
-    AliITSsimulation(source){
+AliITSsimulationSDD::AliITSsimulationSDD(const AliITSsimulationSDD &source) :
+    AliITSsimulation(source),
+fITS(source.fITS),
+fHitMap2(source.fHitMap2),
+fHitSigMap2(source.fHitSigMap2),
+fHitNoiMap2(source.fHitNoiMap2),
+fStream(source.fStream),
+fElectronics(source.fElectronics),
+fInZR(source.fInZR),
+fInZI(source.fInZI),
+fOutZR(source.fOutZR),
+fOutZI(source.fOutZI),
+fAnodeFire(source.fAnodeFire),
+fHis(source.fHis),
+fD(source.fD),
+fT1(source.fT1),
+fT2(source.fT2),
+fTol(source.fTol),
+fTreeB(source.fTreeB),
+fParam(source.fParam),
+fFileName(source.fFileName),
+fFlag(source.fFlag),
+fCheckNoise(source.fCheckNoise),
+fCrosstalkFlag(source.fCrosstalkFlag),
+fDoFFT(source.fDoFFT),
+fNofMaps(source.fNofMaps),
+fMaxNofSamples(source.fMaxNofSamples),
+fScaleSize(source.fScaleSize){
     // Copy constructor to satify Coding roules only.
 
-    if(this==&source) return;
-    Error("AliITSsimulationSSD","Not allowed to make a copy of "
+}
+//______________________________________________________________________
+AliITSsimulationSDD& AliITSsimulationSDD::operator=(const AliITSsimulationSDD &src){
+    // Assignment operator to satify Coding roules only.
+
+    if(this==&src) return *this;
+    Error("AliITSsimulationSDD","Not allowed to make a = with "
           "AliITSsimulationSDD Using default creater instead");
-    AliITSsimulationSDD();
+    return *this ;
 }
 //______________________________________________________________________
-AliITSsimulationSDD& AliITSsimulationSDD::operator=(AliITSsimulationSDD &src){
+AliITSsimulation& AliITSsimulationSDD::operator=(const AliITSsimulation &src){
     // Assignment operator to satify Coding roules only.
 
     if(this==&src) return *this;
@@ -183,62 +201,69 @@ AliITSsimulationSDD& AliITSsimulationSDD::operator=(AliITSsimulationSDD &src){
           "AliITSsimulationSDD Using default creater instead");
     return *this ;
 }
-//______________________________________________________________________
-AliITSsimulationSDD::AliITSsimulationSDD(AliITSsegmentation *seg,
-                                         AliITSresponse *resp){
-    // Standard Constructor
 
-    fResponse      = 0;
-    fSegmentation  = 0;
-    fHis           = 0;
-//    fpList         = 0;
-    fHitMap2       = 0;
-    fHitSigMap2    = 0;
-    fHitNoiMap2    = 0;
-    fElectronics   = 0;
-    fStream        = 0;
-    fInZR          = 0;
-    fInZI          = 0;
-    fOutZR         = 0;
-    fOutZI         = 0;
-    fNofMaps       = 0;
-    fMaxNofSamples = 0;
-    fITS           = 0;
-    fTreeB         = 0;
-    SetDebug(kFALSE);
-
-    Init((AliITSsegmentationSDD*)seg,(AliITSresponseSDD*)resp);
+//______________________________________________________________________
+AliITSsimulationSDD::AliITSsimulationSDD(AliITSDetTypeSim* dettyp):
+AliITSsimulation(dettyp),
+fITS(0),
+fHitMap2(0),
+fHitSigMap2(0),
+fHitNoiMap2(0),
+fStream(0),
+fElectronics(0),
+fInZR(0),
+fInZI(0),
+fOutZR(0),
+fOutZI(0),
+fAnodeFire(0),
+fHis(0),
+fD(),
+fT1(),
+fT2(),
+fTol(),
+fTreeB(0),
+fParam(),
+fFileName(),
+fFlag(kFALSE),
+fCheckNoise(kFALSE),
+fCrosstalkFlag(kFALSE),
+fDoFFT(1),
+fNofMaps(0),
+fMaxNofSamples(0),
+fScaleSize(0){
+    // Default Constructor
+  Init();
 }
 //______________________________________________________________________
-void AliITSsimulationSDD::Init(AliITSsegmentationSDD *seg,
-                               AliITSresponseSDD *resp){
+void AliITSsimulationSDD::Init(){
     // Standard Constructor
 
-    fResponse     = resp;
-    fSegmentation = seg;
     SetScaleFourier();
     SetPerpendTracksFlag();
     SetCrosstalkFlag();
     SetDoFFT();
     SetCheckNoise();
 
-    fpList = new AliITSpList( fSegmentation->Npz(),
-                              fScaleSize*fSegmentation->Npx() );
-    fHitSigMap2 = new AliITSMapA2(fSegmentation,fScaleSize,1);
-    fHitNoiMap2 = new AliITSMapA2(fSegmentation,fScaleSize,1);
+    AliITSsegmentationSDD* seg = (AliITSsegmentationSDD*)GetSegmentationModel(1);
+    
+    AliITSresponseSDD* res = (AliITSresponseSDD*)fDetType->GetResponse(1);
+    fpList = new AliITSpList( seg->Npz(),
+                              fScaleSize*seg->Npx() );
+    fHitSigMap2 = new AliITSMapA2(seg,fScaleSize,1);
+    fHitNoiMap2 = new AliITSMapA2(seg,fScaleSize,1);
     fHitMap2 = fHitSigMap2;
 
-    fNofMaps = fSegmentation->Npz();
-    fMaxNofSamples = fSegmentation->Npx();
+    fNofMaps = seg->Npz();
+    fMaxNofSamples = seg->Npx();
     fAnodeFire = new Bool_t [fNofMaps];
     
-    Float_t sddLength = fSegmentation->Dx();
-    Float_t sddWidth  = fSegmentation->Dz();
+    Float_t sddLength = seg->Dx();
+    Float_t sddWidth  = seg->Dz();
 
     Int_t dummy        = 0;
-    Float_t anodePitch = fSegmentation->Dpz(dummy);
-    Double_t timeStep  = (Double_t)fSegmentation->Dpx(dummy);
-    Float_t driftSpeed = fResponse->DriftSpeed();
+    Float_t anodePitch = seg->Dpz(dummy);
+    Double_t timeStep  = (Double_t)seg->Dpx(dummy);
+    Float_t driftSpeed = res->DriftSpeed();
 
     if(anodePitch*(fNofMaps/2) > sddWidth) {
         Warning("AliITSsimulationSDD",
@@ -253,47 +278,21 @@ void AliITSsimulationSDD::Init(AliITSsegmentationSDD *seg,
     } // end if
 
     fElectronics = new AliITSetfSDD(timeStep/fScaleSize,
-                                    fResponse->Electronics());
+                                    res->Electronics());
 
     char opt1[20], opt2[20];
-    fResponse->ParamOptions(opt1,opt2);
+    res->ParamOptions(opt1,opt2);
     fParam = opt2;
-    char *same = strstr(opt1,"same");
-    if (same) {
-        fNoise.Set(0);
-        fBaseline.Set(0);
-    } else {
-        fNoise.Set(fNofMaps);
-        fBaseline.Set(fNofMaps);
-    } // end if
 
-    const char *kopt=fResponse->ZeroSuppOption();
-    if (strstr(fParam.Data(),"file") ) {
-        fD.Set(fNofMaps);
-        fT1.Set(fNofMaps);
-        if (strstr(kopt,"2D")) {
-            fT2.Set(fNofMaps);
-            fTol.Set(0);
-            Init2D();       // desactivate if param change module by module
-        } else if(strstr(kopt,"1D"))  {
-            fT2.Set(2);
-            fTol.Set(2);
-            Init1D();      // desactivate if param change module by module
-        } // end if strstr
-    } else {
-        fD.Set(2);
-        fTol.Set(2);
-        fT1.Set(2);
-        fT2.Set(2);
-        SetCompressParam();
-    } // end if else strstr
-
-    Bool_t write = fResponse->OutputOption();
+    const char *kopt=res->ZeroSuppOption();
+    fD.Set(fNofMaps);
+    fT1.Set(fNofMaps);
+    fT2.Set(fNofMaps);
+    fTol.Set(fNofMaps);
+    Bool_t write = res->OutputOption();
     if(write && strstr(kopt,"2D")) MakeTreeB();
-
-    // call here if baseline does not change by module
-    // ReadBaseline();
-
+  
     fITS       = (AliITS*)gAlice->GetModule("ITS");
     Int_t size = fNofMaps*fMaxNofSamples;
     fStream    = new AliITSInStream(size);
@@ -302,13 +301,12 @@ void AliITSsimulationSDD::Init(AliITSsegmentationSDD *seg,
     fInZI  = new Double_t [fScaleSize*fMaxNofSamples];
     fOutZR = new Double_t [fScaleSize*fMaxNofSamples];
     fOutZI = new Double_t [fScaleSize*fMaxNofSamples];  
-
 }
 //______________________________________________________________________
 AliITSsimulationSDD::~AliITSsimulationSDD() { 
     // destructor
 
-//    delete fpList;
+    //    delete fpList;
     delete fHitSigMap2;
     delete fHitNoiMap2;
     delete fStream;
@@ -343,7 +341,7 @@ void AliITSsimulationSDD::ClearMaps() {
     fHitNoiMap2->ClearMap();
 }
 //______________________________________________________________________
-void AliITSsimulationSDD::SDigitiseModule( AliITSmodule *mod, Int_t md, Int_t ev){
+void AliITSsimulationSDD::SDigitiseModule(AliITSmodule *mod,Int_t md,Int_t ev){
     // digitize module using the "slow" detector simulator creating
     // summable digits.
 
@@ -353,31 +351,33 @@ void AliITSsimulationSDD::SDigitiseModule( AliITSmodule *mod, Int_t md, Int_t ev
 
     InitSimulationModule( md, ev );
     HitsToAnalogDigits( mod );
-    ChargeToSignal( kFALSE ); // - Process signal without add noise
+    ChargeToSignal( fModule,kFALSE ); // - Process signal without add noise
     fHitMap2 = fHitNoiMap2;   // - Swap to noise map
-    ChargeToSignal( kTRUE );  // - Process only noise
+    ChargeToSignal( fModule,kTRUE );  // - Process only noise
     fHitMap2 = fHitSigMap2;   // - Return to signal map
     WriteSDigits();
     ClearMaps();
 }
 //______________________________________________________________________
-Bool_t AliITSsimulationSDD::AddSDigitsToModule( TClonesArray *pItemArray, Int_t mask ) {
+Bool_t AliITSsimulationSDD::AddSDigitsToModule(TClonesArray *pItemArray,
+                                               Int_t mask ) {
     // Add Summable digits to module maps.
+   AliITSresponseSDD* res = (AliITSresponseSDD*)fDetType->GetResponse(1);
     Int_t    nItems = pItemArray->GetEntries();
-    Double_t maxadc = fResponse->MaxAdc();
-    //Bool_t sig = kFALSE;
+    Double_t maxadc = res->MaxAdc();
+    Bool_t sig = kFALSE;
     
     // cout << "Adding "<< nItems <<" SDigits to module " << fModule << endl;
     for( Int_t i=0; i<nItems; i++ ) {
         AliITSpListItem * pItem = (AliITSpListItem *)(pItemArray->At( i ));
         if( pItem->GetModule() != fModule ) {
-            Error( "AliITSsimulationSDD",
-                   "Error reading, SDigits module %d != current module %d: exit\n",
-                    pItem->GetModule(), fModule );
-            return kFALSE;
+            Error( "AliITSsimulationSDD","Error reading, SDigits module "
+                   "%d != current module %d: exit",
+                   pItem->GetModule(), fModule );
+            return sig;
         } // end if
 
-      //  if(pItem->GetSignal()>0.0 ) sig = kTRUE;
+        if(pItem->GetSignal()>0.0 ) sig = kTRUE;
         
         fpList->AddItemTo( mask, pItem ); // Add SignalAfterElect + noise
         AliITSpListItem * pItem2 = fpList->GetpListItem( pItem->GetIndex() );
@@ -389,7 +389,7 @@ Bool_t AliITSsimulationSDD::AddSDigitsToModule( TClonesArray *pItemArray, Int_t
         fHitMap2->SetHit( ia, it, sigAE );
         fAnodeFire[ia] = kTRUE;
     }
-    return kTRUE;
+    return sig;
 }
 //______________________________________________________________________
 void AliITSsimulationSDD::FinishSDigitiseModule() {
@@ -408,7 +408,7 @@ void AliITSsimulationSDD::DigitiseModule(AliITSmodule *mod,Int_t md,Int_t ev){
     InitSimulationModule( md, ev );
 
     if( !nhits && fCheckNoise ) {
-        ChargeToSignal( kTRUE );  // process noise
+        ChargeToSignal( fModule,kTRUE );  // process noise
         GetNoise();
         ClearMaps();
         return;
@@ -416,7 +416,7 @@ void AliITSsimulationSDD::DigitiseModule(AliITSmodule *mod,Int_t md,Int_t ev){
         if( !nhits ) return;
         
     HitsToAnalogDigits( mod );
-    ChargeToSignal( kTRUE );  // process signal + noise
+    ChargeToSignal( fModule,kTRUE );  // process signal + noise
 
     for( Int_t i=0; i<fNofMaps; i++ ) {
         for( Int_t j=0; j<fMaxNofSamples; j++ ) {
@@ -433,7 +433,6 @@ void AliITSsimulationSDD::DigitiseModule(AliITSmodule *mod,Int_t md,Int_t ev){
             fpList->AddItemTo( 0, &pItemTmp2 );
         }
     }
-
     FinishDigits();
     ClearMaps();
 }
@@ -441,35 +440,39 @@ void AliITSsimulationSDD::DigitiseModule(AliITSmodule *mod,Int_t md,Int_t ev){
 void AliITSsimulationSDD::FinishDigits() {
     // introduce the electronics effects and do zero-suppression if required
 
-    ApplyDeadChannels();
-    if( fCrosstalkFlag ) ApplyCrosstalk();
+    ApplyDeadChannels(fModule);
+    if( fCrosstalkFlag ) ApplyCrosstalk(fModule);
 
-    const char *kopt = fResponse->ZeroSuppOption();
+    AliITSCalibrationSDD* res = (AliITSCalibrationSDD*)GetCalibrationModel(fModule);
+    const char *kopt = res->GetZeroSuppOption();
     ZeroSuppression( kopt );
 }
 //______________________________________________________________________
 void AliITSsimulationSDD::HitsToAnalogDigits( AliITSmodule *mod ) {
     // create maps to build the lists of tracks for each digit
 
-    TObjArray *fHits    = mod->GetHits();
-    Int_t      nhits    = fHits->GetEntriesFast();
-//    Int_t      arg[6]   = {0,0,0,0,0,0};
-    Int_t    dummy      = 0;
-    Int_t    nofAnodes  = fNofMaps/2;
-    Float_t  sddLength  = fSegmentation->Dx();
-    Float_t  sddWidth   = fSegmentation->Dz();
-    Float_t  anodePitch = fSegmentation->Dpz(dummy);
-    Float_t  timeStep   = fSegmentation->Dpx(dummy);
-    Float_t  driftSpeed = fResponse->DriftSpeed();
-    Float_t  maxadc     = fResponse->MaxAdc();    
-    Float_t  topValue   = fResponse->DynamicRange();
-    Float_t  cHloss     = fResponse->ChargeLoss();
-    Float_t  norm       = maxadc/topValue;
-    Float_t  dfCoeff, s1; fResponse->DiffCoeff(dfCoeff,s1); // Signal 2d Shape
-    Double_t eVpairs    = 3.6;  // electron pair energy eV.
-    Float_t  nsigma     = fResponse->NSigmaIntegration(); //
-    Int_t    nlookups   = fResponse->GausNLookUp();       //
-    Float_t  jitter     = ((AliITSresponseSDD*)fResponse)->JitterError(); // 
+  AliITSsegmentationSDD* seg = (AliITSsegmentationSDD*)GetSegmentationModel(1);
+  AliITSCalibrationSDD* res = (AliITSCalibrationSDD*)GetCalibrationModel(fModule);
+  TObjArray *hits     = mod->GetHits();
+    Int_t      nhits    = hits->GetEntriesFast();
+
+    //    Int_t      arg[6]   = {0,0,0,0,0,0};
+    Int_t     dummy      = 0;
+    Int_t     nofAnodes  = fNofMaps/2;
+    Double_t  sddLength  = seg->Dx();
+    Double_t  sddWidth   = seg->Dz();
+    Double_t  anodePitch = seg->Dpz(dummy);
+    Double_t  timeStep   = seg->Dpx(dummy);
+    Double_t  driftSpeed = res->GetDriftSpeed();
+    //Float_t   maxadc     = res->GetMaxAdc();    
+    //Float_t   topValue   = res->GetDynamicRange();
+    Double_t  norm       = res->GetMaxAdc()/res->GetDynamicRange(); //   maxadc/topValue;
+    Double_t  cHloss     = res->GetChargeLoss();
+    Float_t   dfCoeff, s1; res->DiffCoeff(dfCoeff,s1); // Signal 2d Shape
+    Double_t  eVpairs    = res->GetGeVToCharge()*1.0E9; // 3.6 eV by def.
+    Double_t  nsigma     = res->GetNSigmaIntegration(); //
+    Int_t     nlookups   = res->GetGausNLookUp();       //
+    Float_t   jitter     = res->GetJitterError(); // 
 
     // Piergiorgio's part (apart for few variables which I made float
     // when i thought that can be done
@@ -477,45 +480,45 @@ void AliITSsimulationSDD::HitsToAnalogDigits( AliITSmodule *mod ) {
     // loop over hits in the module
 
     const Float_t kconv = 1.0e+6;  // GeV->KeV
-    Int_t    itrack      = 0;
-    Int_t    hitDetector; // detector number (lay,lad,hitDetector)
-    Int_t    iWing;       // which detector wing/side.
-    Int_t    detector;    // 2*(detector-1)+iWing
-    Int_t    ii,kk,ka,kt; // loop indexs
-    Int_t    ia,it,index; // sub-pixel integration indexies
-    Int_t    iAnode;      // anode number.
-    Int_t    timeSample;  // time buckett.
-    Int_t    anodeWindow; // anode direction charge integration width
-    Int_t    timeWindow;  // time direction charge integration width
-    Int_t    jamin,jamax; // anode charge integration window
-    Int_t    jtmin,jtmax; // time charge integration window
-    Int_t    ndiv;        // Anode window division factor.
-    Int_t    nsplit;      // the number of splits in anode and time windows==1.
-    Int_t    nOfSplits;   // number of times track length is split into
-    Float_t  nOfSplitsF;  // Floating point version of nOfSplits.
-    Float_t  kkF;         // Floating point version of loop index kk.
-    Float_t  pathInSDD; // Track length in SDD.
-    Float_t  drPath; // average position of track in detector. in microns
-    Float_t  drTime; // Drift time
-    Float_t  nmul;   // drift time window multiplication factor.
-    Float_t  avDrft;  // x position of path length segment in cm.
-    Float_t  avAnode; // Anode for path length segment in Anode number (float)
-    Float_t  xAnode;  // Floating point anode number.
-    Float_t  driftPath; // avDrft in microns.
-    Float_t  width;     // width of signal at anodes.
+    Int_t     itrack      = 0;
+    Int_t     hitDetector; // detector number (lay,lad,hitDetector)
+    Int_t     iWing;       // which detector wing/side.
+    Int_t     detector;    // 2*(detector-1)+iWing
+    Int_t     ii,kk,ka,kt; // loop indexs
+    Int_t     ia,it,index; // sub-pixel integration indexies
+    Int_t     iAnode;      // anode number.
+    Int_t     timeSample;  // time buckett.
+    Int_t     anodeWindow; // anode direction charge integration width
+    Int_t     timeWindow;  // time direction charge integration width
+    Int_t     jamin,jamax; // anode charge integration window
+    Int_t     jtmin,jtmax; // time charge integration window
+    Int_t     ndiv;        // Anode window division factor.
+    Int_t     nsplit;      // the number of splits in anode and time windows==1.
+    Int_t     nOfSplits;   // number of times track length is split into
+    Float_t   nOfSplitsF;  // Floating point version of nOfSplits.
+    Float_t   kkF;         // Floating point version of loop index kk.
+    Double_t  pathInSDD; // Track length in SDD.
+    Double_t  drPath; // average position of track in detector. in microns
+    Double_t  drTime; // Drift time
+    Double_t  nmul;   // drift time window multiplication factor.
+    Double_t  avDrft;  // x position of path length segment in cm.
+    Double_t  avAnode; // Anode for path length segment in Anode number (float)
+    Double_t  xAnode;  // Floating point anode number.
+    Double_t  driftPath; // avDrft in microns.
+    Double_t  width;     // width of signal at anodes.
     Double_t  depEnergy; // Energy deposited in this GEANT step.
     Double_t  xL[3],dxL[3]; // local hit coordinates and diff.
-    Double_t sigA; // sigma of signal at anode.
-    Double_t sigT; // sigma in time/drift direction for track segment
-    Double_t aStep,aConst; // sub-pixel size and offset anode
-    Double_t tStep,tConst; // sub-pixel size and offset time
-    Double_t amplitude; // signal amplitude for track segment in nanoAmpere
-    Double_t chargeloss; // charge loss for track segment.
-    Double_t anodeAmplitude; // signal amplitude in anode direction
-    Double_t aExpo;          // exponent of Gaussian anode direction
-    Double_t timeAmplitude;  // signal amplitude in time direction
-    Double_t tExpo;          // exponent of Gaussian time direction
-//  Double_t tof;            // Time of flight in ns of this step.    
+    Double_t  sigA; // sigma of signal at anode.
+    Double_t  sigT; // sigma in time/drift direction for track segment
+    Double_t  aStep,aConst; // sub-pixel size and offset anode
+    Double_t  tStep,tConst; // sub-pixel size and offset time
+    Double_t  amplitude; // signal amplitude for track segment in nanoAmpere
+    Double_t  chargeloss; // charge loss for track segment.
+    Double_t  anodeAmplitude; // signal amplitude in anode direction
+    Double_t  aExpo;          // exponent of Gaussian anode direction
+    Double_t  timeAmplitude;  // signal amplitude in time direction
+    Double_t  tExpo;          // exponent of Gaussian time direction
+    //  Double_t tof;            // Time of flight in ns of this step.    
 
     for(ii=0; ii<nhits; ii++) {
         if(!mod->LineSegmentL(ii,xL[0],dxL[0],xL[1],dxL[1],xL[2],dxL[2],
@@ -525,17 +528,14 @@ void AliITSsimulationSDD::HitsToAnalogDigits( AliITSmodule *mod ) {
         hitDetector = mod->GetDet();
         //tof         = 1.E+09*(mod->GetHit(ii)->GetTOF()); // tof in ns.
         //if(tof>sddLength/driftSpeed) continue; // hit happed too late.
-
+        
         // scale path to simulate a perpendicular track
         // continue if the particle did not lose energy
         // passing through detector
         if (!depEnergy) {
-         if(GetDebug()){ 
-            Warning("HitsToAnalogDigits", 
-                    "fTrack = %d hit=%d module=%d This particle has"
-                    " passed without losing energy!",
-                    itrack,ii,mod->GetIndex());
-         }
+            AliDebug(1,
+             Form("fTrack = %d hit=%d module=%d This particle has passed without losing energy!",
+                 itrack,ii,mod->GetIndex()));
             continue;
         } // end if !depEnergy
 
@@ -546,13 +546,10 @@ void AliITSsimulationSDD::HitsToAnalogDigits( AliITSmodule *mod ) {
         if(drPath < 0) drPath = -drPath;
         drPath = sddLength-drPath;
         if(drPath < 0) {
-         if(GetDebug()){ // this should be fixed at geometry level
-            Warning("HitsToAnalogDigits",
-                    "negative drift path drPath=%e sddLength=%e dxL[0]=%e "
-                    "xL[0]=%e",
-                    drPath,sddLength,dxL[0],xL[0]);
-         }
-         continue;
+            AliDebug(1, // this should be fixed at geometry level
+              Form("negative drift path drPath=%e sddLength=%e dxL[0]=%e xL[0]=%e",
+                  drPath,sddLength,dxL[0],xL[0]));
+            continue;
         } // end if drPath < 0
 
         // Compute number of segments to brake step path into
@@ -579,11 +576,9 @@ void AliITSsimulationSDD::HitsToAnalogDigits( AliITSmodule *mod ) {
             driftPath = sddLength-driftPath;
             detector  = 2*(hitDetector-1) + iWing;
             if(driftPath < 0) {
-              if(GetDebug()){ // this should be fixed at geometry level
-                Warning("HitsToAnalogDigits","negative drift path "
-                        "driftPath=%e sddLength=%e avDrft=%e dxL[0]=%e "
-                        "xL[0]=%e",driftPath,sddLength,avDrft,dxL[0],xL[0]);
-             }
+                AliDebug(1, // this should be fixed at geometry level
+                 Form("negative drift path driftPath=%e sddLength=%e avDrft=%e dxL[0]=%e xL[0]=%e",
+                     driftPath,sddLength,avDrft,dxL[0],xL[0]));
                 continue;
             } // end if driftPath < 0
 
@@ -603,13 +598,13 @@ void AliITSsimulationSDD::HitsToAnalogDigits( AliITSmodule *mod ) {
             //   Anode
             xAnode = 10000.*(avAnode)/anodePitch + nofAnodes/2;  // +1?
             if(xAnode*anodePitch > sddWidth || xAnode*anodePitch < 0.) 
-                          Warning("HitsToAnalogDigits",
-                                  "Exceedubg sddWidth=%e Z = %e",
-                                  sddWidth,xAnode*anodePitch);
+                Warning("HitsToAnalogDigits",
+                        "Exceedubg sddWidth=%e Z = %e",
+                        sddWidth,xAnode*anodePitch);
             iAnode = (Int_t) (1.+xAnode); // xAnode?
             if(iAnode < 1 || iAnode > nofAnodes) {
-                Warning("HitToAnalogDigits","Wrong iAnode: 1<%d>%d",
-                        iAnode,nofAnodes);
+                Warning("HitToAnalogDigits","Wrong iAnode: 1<%d>%d  (xanode=%e)",
+                        iAnode,nofAnodes, xAnode);
                 continue;
             } // end if iAnode < 1 || iAnode > nofAnodes
 
@@ -622,10 +617,10 @@ void AliITSsimulationSDD::HitsToAnalogDigits( AliITSmodule *mod ) {
             sigT       = sigA/driftSpeed;
             // Peak amplitude in nanoAmpere
             amplitude  = fScaleSize*160.*depEnergy/
-                                 (timeStep*eVpairs*2.*acos(-1.)*sigT*sigA);
+                (timeStep*eVpairs*2.*acos(-1.)*sigT*sigA);
             amplitude *= timeStep/25.; // WARNING!!!!! Amplitude scaling to 
-                                       // account for clock variations 
-                                       // (reference value: 40 MHz)
+            // account for clock variations 
+            // (reference value: 40 MHz)
             chargeloss = 1.-cHloss*driftPath/1000;
             amplitude *= chargeloss;
             width  = 2.*nsigma/(nlookups-1);
@@ -651,13 +646,13 @@ void AliITSsimulationSDD::HitsToAnalogDigits( AliITSmodule *mod ) {
             jamax = (iAnode + anodeWindow/ndiv)*fScaleSize*nsplit;
             if(jamin <= 0) jamin = 1;
             if(jamax > fScaleSize*nofAnodes*nsplit) 
-                                         jamax = fScaleSize*nofAnodes*nsplit;
+                jamax = fScaleSize*nofAnodes*nsplit;
             // jtmin and jtmax are Hard-wired
             jtmin = (Int_t)(timeSample-timeWindow*nmul-1)*nsplit+1;
             jtmax = (Int_t)(timeSample+timeWindow*nmul)*nsplit;
             if(jtmin <= 0) jtmin = 1;
             if(jtmax > fScaleSize*fMaxNofSamples*nsplit) 
-                                      jtmax = fScaleSize*fMaxNofSamples*nsplit;
+                jtmax = fScaleSize*fMaxNofSamples*nsplit;
             // Spread the charge in the anode-time window
             for(ka=jamin; ka <=jamax; ka++) {
                 ia = (ka-1)/(fScaleSize*nsplit) + 1;
@@ -670,7 +665,7 @@ void AliITSsimulationSDD::HitsToAnalogDigits( AliITSmodule *mod ) {
                 if(TMath::Abs(aExpo) > nsigma)  anodeAmplitude = 0.;
                 else {
                     dummy          = (Int_t) ((aExpo+nsigma)/width);
-                    anodeAmplitude = amplitude*fResponse->GausLookUp(dummy);
+                    anodeAmplitude = amplitude*res->GetGausLookUp(dummy);
                 } // end if TMath::Abs(aEspo) > nsigma
                 // index starts from 0
                 index = ((detector+1)%2)*nofAnodes+ia-1;
@@ -681,38 +676,37 @@ void AliITSsimulationSDD::HitsToAnalogDigits( AliITSmodule *mod ) {
                         continue;
                     } // end if 
                     if(it>fScaleSize*fMaxNofSamples)
-                                                it = fScaleSize*fMaxNofSamples;
+                        it = fScaleSize*fMaxNofSamples;
                     tExpo    = (tStep*(kt-0.5)-tConst);
                     if(TMath::Abs(tExpo) > nsigma) timeAmplitude = 0.;
                     else {
                         dummy         = (Int_t) ((tExpo+nsigma)/width);
                         timeAmplitude = anodeAmplitude*
-                                        fResponse->GausLookUp(dummy);
+                            res->GetGausLookUp(dummy);
                     } // end if TMath::Abs(tExpo) > nsigma
                     // build the list of Sdigits for this module        
-//                    arg[0]         = index;
-//                    arg[1]         = it;
-//                    arg[2]         = itrack; // track number
-//                    arg[3]         = ii-1; // hit number.
+                    //                    arg[0]     = index;
+                    //                    arg[1]     = it;
+                    //                    arg[2]     = itrack; // track number
+                    //                    arg[3]     = ii-1; // hit number.
                     timeAmplitude *= norm;
                     timeAmplitude *= 10;
-//                    ListOfFiredCells(arg,timeAmplitude,alst,padr);
+                    //         ListOfFiredCells(arg,timeAmplitude,alst,padr);
                     Double_t charge = timeAmplitude;
                     charge += fHitMap2->GetSignal(index,it-1);
                     fHitMap2->SetHit(index, it-1, charge);
                     fpList->AddSignal(index,it-1,itrack,ii-1,
-                                     mod->GetIndex(),timeAmplitude);
+                                      mod->GetIndex(),timeAmplitude);
                     fAnodeFire[index] = kTRUE;                 
                 } // end if anodeAmplitude and loop over time in window
             } // loop over anodes in window
         } // end loop over "sub-hits"
     } // end loop over hits
 }
-
 /*
 //______________________________________________________________________
 void AliITSsimulationSDD::ListOfFiredCells(Int_t *arg,Double_t timeAmplitude,
-                                          TObjArray *alist,TClonesArray *padr){
+                                          TObjArray *alist,TClonesArray *padr){
     // Returns the list of "fired" cells.
 
     Int_t index     = arg[0];
@@ -743,7 +737,7 @@ void AliITSsimulationSDD::ListOfFiredCells(Int_t *arg,Double_t timeAmplitude,
         trinfo(0) = (Float_t)idtrack;
         trinfo(1) = (Float_t)idhit;
         trinfo(2) = (Float_t)timeAmplitude;
-
+      
         alist->AddAtAndExpand(new AliITSTransientDigit(phys,digits),counter);
         fHitMap1->SetHit(index, it, counter);
         counter++;
@@ -782,23 +776,23 @@ void AliITSsimulationSDD::ListOfFiredCells(Int_t *arg,Double_t timeAmplitude,
             trlist->Add(&trinfo);
         } // end if lasttrack==idtrack
 
-#ifdef print
-        // check the track list - debugging
-        Int_t trk[20], htrk[20];
-        Float_t chtrk[20];  
-        Int_t nptracks = trlist->GetEntriesFast();
-        if (nptracks > 2) {
-            Int_t tr;
-            for (tr=0;tr<nptracks;tr++) {
-                TVector *pptrkp = (TVector*)trlist->At(tr);
-                TVector &pptrk  = *pptrkp;
-                trk[tr]   = Int_t(pptrk(0));
-                htrk[tr]  = Int_t(pptrk(1));
-                chtrk[tr] = (pptrk(2));
-                cout << "nptracks "<<nptracks << endl;
-            } // end for tr
-        } // end if nptracks
-#endif
+        if(AliDebugLevel()){
+            // check the track list - debugging
+            Int_t trk[20], htrk[20];
+            Float_t chtrk[20];  
+            Int_t nptracks = trlist->GetEntriesFast();
+            if (nptracks > 2) {
+                Int_t tr;
+                for (tr=0;tr<nptracks;tr++) {
+                    TVector *pptrkp = (TVector*)trlist->At(tr);
+                    TVector &pptrk  = *pptrkp;
+                    trk[tr]   = Int_t(pptrk(0));
+                    htrk[tr]  = Int_t(pptrk(1));
+                    chtrk[tr] = (pptrk(2));
+                    cout << "nptracks "<<nptracks << endl;
+                } // end for tr
+            } // end if nptracks
+        } // end if AliDebugLevel()
     } //  end if pdigit
 
     // update counter and countadr for next call.
@@ -806,11 +800,11 @@ void AliITSsimulationSDD::ListOfFiredCells(Int_t *arg,Double_t timeAmplitude,
     arg[5] = countadr;
 }
 */
-
 //____________________________________________
 void AliITSsimulationSDD::AddDigit( Int_t i, Int_t j, Int_t signal ) {
     // Adds a Digit.
-    Int_t size = AliITSdigitSPD::GetNTracks();
+    Int_t size = AliITSdigit::GetNTracks();
+
     Int_t digits[3];
     Int_t * tracks = new Int_t[size];
     Int_t * hits = new Int_t[size];
@@ -842,7 +836,7 @@ void AliITSsimulationSDD::AddDigit( Int_t i, Int_t j, Int_t signal ) {
             tracks[l]  = -3;
             hits[l]    = -1;
             charges[l] = 0.0;
-       }// end for if
+        }// end for if
     }
 
     fITS->AddSimDigit( 1, phys, digits, tracks, hits, charges ); 
@@ -850,30 +844,25 @@ void AliITSsimulationSDD::AddDigit( Int_t i, Int_t j, Int_t signal ) {
     delete [] hits;
     delete [] charges;
 }
-
 //______________________________________________________________________
-void AliITSsimulationSDD::ChargeToSignal(Bool_t bAddNoise) {
+void AliITSsimulationSDD::ChargeToSignal(Int_t mod,Bool_t bAddNoise) {
     // add baseline, noise, electronics and ADC saturation effects
 
     char opt1[20], opt2[20];
-    fResponse->ParamOptions(opt1,opt2);
-    char *read = strstr(opt1,"file");
-    Float_t baseline, noise; 
-
-    if (read) {
-        static Bool_t readfile=kTRUE;
-        //read baseline and noise from file
-        if (readfile) ReadBaseline();
-        readfile=kFALSE;
-    } else fResponse->GetNoiseParam(noise,baseline);
+    AliITSCalibrationSDD* res = (AliITSCalibrationSDD*)GetCalibrationModel(mod);
+    res->GetParamOptions(opt1,opt2);
+    Double_t baseline=0; 
+    Double_t noise=0; 
 
     Float_t contrib=0;
     Int_t i,k,kk;
-    Float_t maxadc = fResponse->MaxAdc();    
+    Float_t maxadc = res->GetMaxAdc();    
     if(!fDoFFT) {
         for (i=0;i<fNofMaps;i++) {
             if( !fAnodeFire[i] ) continue;
-            if (read && i<fNofMaps) GetAnodeBaseline(i,baseline,noise);
+           baseline = res->GetBaseline(i);
+           noise = res->GetNoise(i);
+           
             for(k=0; k<fScaleSize*fMaxNofSamples; k++) {
                 fInZR[k]  = fHitMap2->GetSignal(i,k);
                 if( bAddNoise ) {
@@ -888,7 +877,7 @@ void AliITSsimulationSDD::ChargeToSignal(Bool_t bAddNoise) {
                     newcont = fInZR[fScaleSize*k+kk];
                     if(newcont > maxcont) maxcont = newcont;
                 } // end for kk
-                newcont = maxcont;
+               newcont = maxcont;
                 if (newcont >= maxadc) newcont = maxadc -1;
                 if(newcont >= baseline){
                     Warning("","newcont=%d>=baseline=%d",newcont,baseline);
@@ -902,8 +891,9 @@ void AliITSsimulationSDD::ChargeToSignal(Bool_t bAddNoise) {
 
     for (i=0;i<fNofMaps;i++) {
         if( !fAnodeFire[i] ) continue;
-        if  (read && i<fNofMaps) GetAnodeBaseline(i,baseline,noise);
-        for(k=0; k<fScaleSize*fMaxNofSamples; k++) {
+       baseline = res->GetBaseline(i);
+       noise = res->GetNoise(i);
+       for(k=0; k<fScaleSize*fMaxNofSamples; k++) {
             fInZR[k]  = fHitMap2->GetSignal(i,k);
             if( bAddNoise ) {
                 contrib   = (baseline + noise*gRandom->Gaus());
@@ -931,47 +921,47 @@ void AliITSsimulationSDD::ChargeToSignal(Bool_t bAddNoise) {
             fHitMap2->SetHit(i,k,newcont1);
         } // end for k
     } // end for i loop over anodes
-  return;
+    return;
 }
 //____________________________________________________________________
-void AliITSsimulationSDD::ApplyDeadChannels() {    
+void AliITSsimulationSDD::ApplyDeadChannels(Int_t mod) {    
     // Set dead channel signal to zero
-    AliITSresponseSDD * response = (AliITSresponseSDD *)fResponse;
-    
+    AliITSCalibrationSDD * calibr = (AliITSCalibrationSDD *)GetCalibrationModel(mod);
+    AliITSsegmentationSDD* seg = (AliITSsegmentationSDD*)GetSegmentationModel(1);
     // nothing to do
-    if( response->GetDeadModules() == 0 && 
-        response->GetDeadChips() == 0 && 
-        response->GetDeadChannels() == 0 )
-        return;  
+    if( calibr->IsDead() ||   
+        ( calibr->GetDeadChips() == 0 &&
+         calibr->GetDeadChannels() == 0 ) ) return;  
     
-    static AliITS *iTS = (AliITS*)gAlice->GetModule( "ITS" );
+    // static AliITS *iTS = (AliITS*)gAlice->GetModule( "ITS" );
 
-    Int_t fMaxNofSamples = fSegmentation->Npx();    
-    AliITSgeom *geom = iTS->GetITSgeom();
-    Int_t firstSDDMod = geom->GetStartDet( 1 );
+    Int_t fMaxNofSamples = seg->Npx();    
+    // AliITSgeom *geom = iTS->GetITSgeom();
+    // Int_t firstSDDMod = geom->GetStartDet( 1 );
     // loop over wings
     for( Int_t j=0; j<2; j++ ) {
-        Int_t mod = (fModule-firstSDDMod)*2 + j;
-        for( Int_t u=0; u<response->Chips(); u++ )
-            for( Int_t v=0; v<response->Channels(); v++ ) {
-                Float_t Gain = response->Gain( mod, u, v );
-                for( Int_t k=0; k<fMaxNofSamples; k++ ) {
-                    Int_t i = j*response->Chips()*response->Channels() +
-                              u*response->Channels() + 
-                              v;
-                    Double_t signal =  Gain * fHitMap2->GetSignal( i, k );
-                    fHitMap2->SetHit( i, k, signal );  ///
-                }
-            }
-    }    
+      // Int_t mod = (fModule-firstSDDMod)*2 + j;
+      for( Int_t u=0; u<calibr->Chips(); u++ )
+       for( Int_t v=0; v<calibr->Channels(); v++ ) {
+         Float_t gain = calibr->Gain(j, u, v );
+         for( Int_t k=0; k<fMaxNofSamples; k++ ) {
+           Int_t i = j*calibr->Chips()*calibr->Channels() +
+             u*calibr->Channels() + 
+             v;
+           Double_t signal =  gain * fHitMap2->GetSignal( i, k );
+           fHitMap2->SetHit( i, k, signal );  ///
+         }
+       }
+    } 
 }
 //______________________________________________________________________
-void AliITSsimulationSDD::ApplyCrosstalk() {
+void AliITSsimulationSDD::ApplyCrosstalk(Int_t mod) {
     // function add the crosstalk effect to signal
     // temporal function, should be checked...!!!
-    
-    Int_t fNofMaps = fSegmentation->Npz();
-    Int_t fMaxNofSamples = fSegmentation->Npx();
+    AliITSsegmentationSDD* seg = (AliITSsegmentationSDD*)GetSegmentationModel(1);
+  
+    Int_t fNofMaps = seg->Npz();
+    Int_t fMaxNofSamples = seg->Npx();
 
     // create and inizialice crosstalk map
     Float_t* ctk = new Float_t[fNofMaps*fMaxNofSamples+1];
@@ -980,11 +970,9 @@ void AliITSsimulationSDD::ApplyCrosstalk() {
         return;
     }
     memset( ctk, 0, sizeof(Float_t)*(fNofMaps*fMaxNofSamples+1) );
-    
-    Float_t noise, baseline;
-    fResponse->GetNoiseParam( noise, baseline );
-    
+    AliITSCalibrationSDD* calibr = (AliITSCalibrationSDD*)GetCalibrationModel(mod);
     for( Int_t z=0; z<fNofMaps; z++ ) {
+      Double_t baseline = calibr->GetBaseline(z);
         Bool_t on = kFALSE;
         Int_t tstart = 0;
         Int_t tstop = 0;
@@ -1017,9 +1005,9 @@ void AliITSsimulationSDD::ApplyCrosstalk() {
                         for( Int_t i=tstart; i<tstop; i++ ) {   
                             if( i > 2 && i < fMaxNofSamples-2 )
                                 dev[i] = -0.2*fHitMap2->GetSignal( z,i-2 ) 
-                                         -0.1*fHitMap2->GetSignal( z,i-1 ) 
-                                         +0.1*fHitMap2->GetSignal( z,i+1 ) 
-                                         +0.2*fHitMap2->GetSignal( z,i+2 );
+                                    -0.1*fHitMap2->GetSignal( z,i-1 ) 
+                                    +0.1*fHitMap2->GetSignal( z,i+1 ) 
+                                    +0.2*fHitMap2->GetSignal( z,i+2 );
                         }
                         
                         // add crosstalk contribution to neibourg anodes  
@@ -1028,7 +1016,7 @@ void AliITSsimulationSDD::ApplyCrosstalk() {
                             Int_t i1 = (Int_t)((i-tstart)*.61+tstart+0.5); // 
                             Float_t ctktmp =  -dev[i1] * 0.25;
                             if( anode > 0 ) {
-                                ctk[anode*fMaxNofSamples+i] += ctktmp;           
+                                ctk[anode*fMaxNofSamples+i] += ctktmp;
                             }
                             anode = z + 1;
                             if( anode < fNofMaps ) {
@@ -1046,101 +1034,39 @@ void AliITSsimulationSDD::ApplyCrosstalk() {
     
     for( Int_t a=0; a<fNofMaps; a++ )
         for( Int_t t=0; t<fMaxNofSamples; t++ ) {     
-            Float_t signal = fHitMap2->GetSignal( a, t ) + ctk[a*fMaxNofSamples+t];
+            Float_t signal = fHitMap2->GetSignal(a,t)+ctk[a*fMaxNofSamples+t];
             fHitMap2->SetHit( a, t, signal );
         }
-    
+
     delete [] ctk;
 }
-//______________________________________________________________________
-void AliITSsimulationSDD::GetAnodeBaseline(Int_t i,Float_t &baseline,
-                                           Float_t &noise){
-    // Returns the Baseline for a particular anode.
-    baseline = fBaseline[i];
-    noise    = fNoise[i];
-}
+
 //______________________________________________________________________
 void AliITSsimulationSDD::CompressionParam(Int_t i,Int_t &db,Int_t &tl,
-                                           Int_t &th){
+                                           Int_t &th) const{
     // Returns the compression alogirthm parameters
-    Int_t size = fD.GetSize();
-    if (size > 2 ) {
-        db=fD[i]; tl=fT1[i]; th=fT2[i];
-    } else {
-        if (size <= 2 && i>=fNofMaps/2) {
-            db=fD[1]; tl=fT1[1]; th=fT2[1];
-        } else {
-            db=fD[0]; tl=fT1[0]; th=fT2[0];
-        } // end if size <=2 && i>=fNofMaps/2
-    } // end if size >2
+  db=fD[i]; 
+  tl=fT1[i]; 
+  th=fT2[i];
 }
 //______________________________________________________________________
-void AliITSsimulationSDD::CompressionParam(Int_t i,Int_t &db,Int_t &tl){
+void AliITSsimulationSDD::CompressionParam(Int_t i,Int_t &db,Int_t &tl) const{
     // returns the compression alogirthm parameters
-    Int_t size = fD.GetSize();
 
-    if (size > 2 ) {
-        db=fD[i]; tl=fT1[i];
-    } else {
-        if (size <= 2 && i>=fNofMaps/2) {
-            db=fD[1]; tl=fT1[1]; 
-        } else {
-            db=fD[0]; tl=fT1[0]; 
-        } // end if size <=2 && i>=fNofMaps/2
-    //    Warning("CompressionParam","\n Size= %d . Values i=%d ; db= %d ; tl= %d",size,i,db,tl);
-    } // end if size > 2
+    db=fD[i]; 
+    tl=fT1[i];
 }
 //______________________________________________________________________
-void AliITSsimulationSDD::SetCompressParam(){
+void AliITSsimulationSDD::SetCompressParam(){ 
     // Sets the compression alogirthm parameters  
-    Int_t cp[8],i;
-
-    fResponse->GiveCompressParam(cp);
-    for (i=0; i<2; i++) {
-        fD[i]   = cp[i];
-        fT1[i]  = cp[i+2];
-        fT2[i]  = cp[i+4];
-        fTol[i] = cp[i+6];
-    } // end for i
-}
-//______________________________________________________________________
-void AliITSsimulationSDD::ReadBaseline(){
-    // read baseline and noise from file - either a .root file and in this
-    // case data should be organised in a tree with one entry for each
-    // module => reading should be done accordingly
-    // or a classic file and do smth. like this:
-    // Read baselines and noise for SDD
-
-    Int_t na,pos;
-    Float_t bl,n;
-    char input[100], base[100], param[100];
-    char *filtmp;
-
-    fResponse->Filenames(input,base,param);
-    fFileName=base;
-//
-    filtmp = gSystem->ExpandPathName(fFileName.Data());
-    FILE *bline = fopen(filtmp,"r");
-    na = 0;
-
-    if(bline) {
-        while(fscanf(bline,"%d %f %f",&pos, &bl, &n) != EOF) {
-            if (pos != na+1) {
-                Error("ReadBaseline","Anode number not in increasing order!",
-                      filtmp);
-                exit(1);
-            } // end if pos != na+1
-            fBaseline[na]=bl;
-            fNoise[na]=n;
-            na++;
-        } // end while
-    } else {
-        Error("ReadBaseline"," THE BASELINE FILE %s DOES NOT EXIST !",filtmp);
-        exit(1);
-    } // end if(bline)
-
-    fclose(bline);
-    delete [] filtmp;
+    AliITSCalibrationSDD* calibr = (AliITSCalibrationSDD*)GetCalibrationModel(fModule);
+    for(Int_t ian = 0; ian<fNofMaps;ian++){
+      fD[ian] = (Int_t)(calibr->GetBaseline(ian));
+      fT1[ian] = (Int_t)(2.*calibr->GetNoiseAfterElectronics(ian)+0.5);
+      fT2[ian] = 0;   // used by 2D clustering - not defined yet
+      fTol[ian] = 0; // used by 2D clustering - not defined yet
+    }
 }
 //______________________________________________________________________
 Int_t AliITSsimulationSDD::Convert10to8(Int_t signal) const {
@@ -1153,19 +1079,17 @@ Int_t AliITSsimulationSDD::Convert10to8(Int_t signal) const {
     if (signal < 1024) return (224+((signal-512)>>4));
     return 0;
 }
-
 /*
 //______________________________________________________________________
 AliITSMap*   AliITSsimulationSDD::HitMap(Int_t i){
     //Return the correct map.
 
     return ((i==0)? fHitMap1 : fHitMap2);
-}*/
-
+}
+*/
 //______________________________________________________________________
 void AliITSsimulationSDD::ZeroSuppression(const char *option) {
     // perform the zero suppresion
-
     if (strstr(option,"2D")) {
         //Init2D();              // activate if param change module by module
         Compress2D();
@@ -1193,13 +1117,15 @@ void AliITSsimulationSDD::Init2D(){
     Float_t *savesigma = new Float_t [fNofMaps];
     char input[100],basel[100],par[100];
     char *filtmp;
-    Float_t tmp1,tmp2;
-    fResponse->Thresholds(tmp1,tmp2);
+    Double_t tmp1,tmp2;
+    AliITSCalibrationSDD* res = (AliITSCalibrationSDD*)GetCalibrationModel(fModule);
+
+    res->Thresholds(tmp1,tmp2);
     Int_t minval = static_cast<Int_t>(tmp1);
 
-    fResponse->Filenames(input,basel,par);
+    res->Filenames(input,basel,par);
     fFileName = par;
-//
+    //
     filtmp = gSystem->ExpandPathName(fFileName.Data());
     FILE *param = fopen(filtmp,"r");
     na = 0;
@@ -1211,18 +1137,18 @@ void AliITSsimulationSDD::Init2D(){
                 exit(1);
             } // end if pos != na+1
             savemu[na] = mu;
-          savesigma[na] = sigma;
-          if ((2.*sigma) < mu) {
-              fD[na] = (Int_t)floor(mu - 2.0*sigma + 0.5);
-              mu = 2.0 * sigma;
-          } else fD[na] = 0;
-          tempTh = (Int_t)floor(mu+2.25*sigma+0.5) - minval;
-          if (tempTh < 0) tempTh=0;
-          fT1[na] = tempTh;
-          tempTh = (Int_t)floor(mu+3.0*sigma+0.5) - minval;
-          if (tempTh < 0) tempTh=0;
-          fT2[na] = tempTh;
-          na++;
+            savesigma[na] = sigma;
+            if ((2.*sigma) < mu) {
+                fD[na] = (Int_t)floor(mu - 2.0*sigma + 0.5);
+                mu = 2.0 * sigma;
+            } else fD[na] = 0;
+            tempTh = (Int_t)floor(mu+2.25*sigma+0.5) - minval;
+            if (tempTh < 0) tempTh=0;
+            fT1[na] = tempTh;
+            tempTh = (Int_t)floor(mu+3.0*sigma+0.5) - minval;
+            if (tempTh < 0) tempTh=0;
+            fT2[na] = tempTh;
+            na++;
         } // end while
     } else {
         Error("Init2D","THE FILE %s DOES NOT EXIST !",filtmp);
@@ -1239,13 +1165,15 @@ void AliITSsimulationSDD::Compress2D(){
     // simple ITS cluster finder -- online zero-suppression conditions
 
     Int_t db,tl,th; 
-    Float_t tmp1,tmp2;
-    fResponse->Thresholds(tmp1,tmp2); 
+    Double_t tmp1,tmp2;
+    AliITSCalibrationSDD* res = (AliITSCalibrationSDD*)GetCalibrationModel(fModule);
+
+    res->Thresholds(tmp1,tmp2); 
     Int_t minval   = static_cast<Int_t>(tmp1);
-    Bool_t write   = fResponse->OutputOption();   
-    Bool_t do10to8 = fResponse->Do10to8();
+    Bool_t write   = res->OutputOption();   
+    Bool_t do10to8 = res->Do10to8();
     Int_t nz, nl, nh, low, i, j; 
-
+    SetCompressParam();
     for (i=0; i<fNofMaps; i++) {
         CompressionParam(i,db,tl,th);
         nz  = 0; 
@@ -1283,18 +1211,21 @@ void AliITSsimulationSDD::Compress2D(){
 void  AliITSsimulationSDD::FindCluster(Int_t i,Int_t j,Int_t signal,
                                        Int_t minval,Bool_t &cond){
     // Find clusters according to the online 2D zero-suppression algorithm
-    Bool_t do10to8 = fResponse->Do10to8();
+    AliITSCalibrationSDD* res = (AliITSCalibrationSDD*)GetCalibrationModel(fModule);
+    AliITSsegmentationSDD* seg = (AliITSsegmentationSDD*)GetSegmentationModel(1);
+  
+    Bool_t do10to8 = res->Do10to8();
     Bool_t high    = kFALSE;
 
     fHitMap2->FlagHit(i,j);
-//
-//  check the online zero-suppression conditions
-//  
+    //
+    //  check the online zero-suppression conditions
+    //  
     const Int_t kMaxNeighbours = 4;
     Int_t nn;
     Int_t dbx,tlx,thx;  
     Int_t xList[kMaxNeighbours], yList[kMaxNeighbours];
-    fSegmentation->Neighbours(i,j,&nn,xList,yList);
+    seg->Neighbours(i,j,&nn,xList,yList);
     Int_t in,ix,iy,qns;
     for (in=0; in<nn; in++) {
         ix=xList[in];
@@ -1326,7 +1257,7 @@ void AliITSsimulationSDD::Init1D(){
     // this is just a copy-paste of input taken from 2D algo
     // Torino people should give input
     // Read 1D zero-suppression parameters for SDD
-
+    
     if (!strstr(fParam.Data(),"file")) return;
 
     Int_t na,pos,tempTh;
@@ -1335,20 +1266,22 @@ void AliITSsimulationSDD::Init1D(){
     Float_t *savesigma = new Float_t [fNofMaps];
     char input[100],basel[100],par[100];
     char *filtmp;
-    Float_t tmp1,tmp2;
-    fResponse->Thresholds(tmp1,tmp2);
+    Double_t tmp1,tmp2;
+    AliITSCalibrationSDD* res = (AliITSCalibrationSDD*)GetCalibrationModel(fModule);
+
+    res->Thresholds(tmp1,tmp2);
     Int_t minval = static_cast<Int_t>(tmp1);
 
-    fResponse->Filenames(input,basel,par);
+    res->Filenames(input,basel,par);
     fFileName=par;
 
-//  set first the disable and tol param
+    //  set first the disable and tol param
     SetCompressParam();
-//
+    //
     filtmp = gSystem->ExpandPathName(fFileName.Data());
     FILE *param = fopen(filtmp,"r");
     na = 0;
-
     if (param) {
         fscanf(param,"%d %d %d %d ", &fT2[0], &fT2[1], &fTol[0], &fTol[1]);
         while(fscanf(param,"%d %f %f",&pos, &mu, &sigma) != EOF) {
@@ -1383,10 +1316,12 @@ void AliITSsimulationSDD::Compress1D(){
     Int_t    dis,tol,thres,decr,diff;
     UChar_t *str=fStream->Stream();
     Int_t    counter=0;
-    Bool_t   do10to8=fResponse->Do10to8();
+    AliITSCalibrationSDD* res = (AliITSCalibrationSDD*)GetCalibrationModel(fModule);
+
+    Bool_t   do10to8=res->Do10to8();
     Int_t    last=0;
     Int_t    k,i,j;
-
+    SetCompressParam();
     for (k=0; k<2; k++) {
         tol = Tolerance(k);
         dis = Disable(k);  
@@ -1395,9 +1330,7 @@ void AliITSsimulationSDD::Compress1D(){
             Int_t idx=i+k*fNofMaps/2;
             if( !fAnodeFire[idx] ) continue;
             CompressionParam(idx,decr,thres); 
-
-            decr=20;  thres=3; //I.Belikov's temporary fix (needed for the PID)
-
+            
             for (j=0; j<fMaxNofSamples; j++) {
                 Int_t signal=(Int_t)(fHitMap2->GetSignal(idx,j));
                 signal -= decr;  // if baseline eq.
@@ -1440,7 +1373,7 @@ void AliITSsimulationSDD::Compress1D(){
     // open file and write out the stream of diff's
     static Bool_t open=kTRUE;
     static TFile *outFile;
-    Bool_t write = fResponse->OutputOption();
+    Bool_t write = res->OutputOption();
     TDirectory *savedir = gDirectory;
  
     if (write ) {
@@ -1453,7 +1386,7 @@ void AliITSsimulationSDD::Compress1D(){
         open = kFALSE;
         outFile->cd();
         fStream->Write();
-    }  // endif write        
+    }  // endif write
 
     fStream->ClearStream();
 
@@ -1463,7 +1396,9 @@ void AliITSsimulationSDD::Compress1D(){
 //______________________________________________________________________
 void AliITSsimulationSDD::StoreAllDigits(){
     // if non-zero-suppressed data
-    Bool_t do10to8 = fResponse->Do10to8();
+    AliITSCalibrationSDD* res = (AliITSCalibrationSDD*)GetCalibrationModel(fModule);
+
+    Bool_t do10to8 = res->Do10to8();
     Int_t i, j, digits[3];
 
     for (i=0; i<fNofMaps; i++) {
@@ -1474,7 +1409,7 @@ void AliITSsimulationSDD::StoreAllDigits(){
             digits[1] = j;
             digits[2] = signal;
             fITS->AddRealDigit(1,digits);
-        } // end for j
+       } // end for j
     } // end for i
 } 
 //______________________________________________________________________
@@ -1482,15 +1417,15 @@ void AliITSsimulationSDD::CreateHistograms(Int_t scale){
     // Creates histograms of maps for debugging
     Int_t i;
 
-      fHis=new TObjArray(fNofMaps);
-      for (i=0;i<fNofMaps;i++) {
-           TString sddName("sdd_");
-           Char_t candNum[4];
-           sprintf(candNum,"%d",i+1);
-           sddName.Append(candNum);
-           fHis->AddAt(new TH1F(sddName.Data(),"SDD maps",scale*fMaxNofSamples,
-                                0.,(Float_t) scale*fMaxNofSamples), i);
-      } // end for i
+    fHis=new TObjArray(fNofMaps);
+    for (i=0;i<fNofMaps;i++) {
+        TString sddName("sdd_");
+        Char_t candNum[4];
+        sprintf(candNum,"%d",i+1);
+        sddName.Append(candNum);
+        fHis->AddAt(new TH1F(sddName.Data(),"SDD maps",scale*fMaxNofSamples,
+                             0.,(Float_t) scale*fMaxNofSamples), i);
+    } // end for i
 }
 //______________________________________________________________________
 void AliITSsimulationSDD::FillHistograms(){
@@ -1548,24 +1483,17 @@ void AliITSsimulationSDD::WriteToFile(TFile *hfile) {
 //______________________________________________________________________
 Float_t AliITSsimulationSDD::GetNoise() {  
     // Returns the noise value
-    //Bool_t do10to8=fResponse->Do10to8();
+    //Bool_t do10to8=GetResp()->Do10to8();
     //noise will always be in the liniar part of the signal
     Int_t decr;
     Int_t threshold = fT1[0];
     char opt1[20], opt2[20];
-
-    fResponse->ParamOptions(opt1,opt2);
+    AliITSCalibrationSDD* res = (AliITSCalibrationSDD*)GetCalibrationModel(fModule);
+    SetCompressParam();
+    res->GetParamOptions(opt1,opt2);
     fParam=opt2;
-    char *same = strstr(opt1,"same");
-    Float_t noise,baseline;
-    if (same) {
-        fResponse->GetNoiseParam(noise,baseline);
-    } else {
-        static Bool_t readfile=kTRUE;
-        //read baseline and noise from file
-        if (readfile) ReadBaseline();
-        readfile=kFALSE;
-    } // end if same
+    Double_t noise,baseline;
+    //GetBaseline(fModule);
 
     TCanvas *c2 = (TCanvas*)gROOT->GetListOfCanvases()->FindObject("c2");
     if(c2) delete c2->GetPrimitive("noisehist");
@@ -1580,12 +1508,13 @@ Float_t AliITSsimulationSDD::GetNoise() {
     Int_t i,k;
     for (i=0;i<fNofMaps;i++) {
         CompressionParam(i,decr,threshold); 
-        if  (!same) GetAnodeBaseline(i,baseline,noise);
+       baseline = res->GetBaseline(i);
+       noise = res->GetNoise(i);
         anode->Reset();
         for (k=0;k<fMaxNofSamples;k++) {
             Float_t signal=(Float_t)fHitMap2->GetSignal(i,k);
             //if (signal <= (float)threshold) noisehist->Fill(signal-baseline);
-            if (signal <= (float)threshold) noisehist->Fill(signal);
+            if (signal <= (float)(threshold+decr)) noisehist->Fill(signal);
             anode->Fill((float)k,signal);
         } // end for k
         anode->Draw();
@@ -1617,12 +1546,12 @@ void AliITSsimulationSDD::WriteSDigits(){
                 AliITSpListItem pItemTmp2( fModule, index, 0. );
                 // put the fScaleSize analog digits in only one
                 for( Int_t ik=0; ik<fScaleSize; ik++ ) {
-                    AliITSpListItem *pItemTmp = fpList->GetpListItem( i, jdx+ik );
+                    AliITSpListItem *pItemTmp = fpList->GetpListItem(i,jdx+ik);
                     if( pItemTmp == 0 ) continue;
                     pItemTmp2.Add( pItemTmp );
                 }
                 pItemTmp2.AddSignalAfterElect( fModule, index, sig );
-                pItemTmp2.AddNoise( fModule, index, fHitNoiMap2->GetSignal( i, j ) );         
+                pItemTmp2.AddNoise(fModule,index,fHitNoiMap2->GetSignal(i,j));
                 aliITS->AddSumDigit( pItemTmp2 );
             } // end if (sig > 0.2)
         }
@@ -1630,7 +1559,7 @@ void AliITSsimulationSDD::WriteSDigits(){
     return;
 }
 //______________________________________________________________________
-void AliITSsimulationSDD::Print() {
+void AliITSsimulationSDD::PrintStatus() const {
     // Print SDD simulation Parameters
 
     cout << "**************************************************" << endl;