/* $Id$ */
-// --------------------------
+//-----------------------------------------------------------------------------
// Class AliMUONResponseV0
// --------------------------
-// Implementation of Mathieson response
-// ...
+// Implementation of
+// Mathieson response
+//-----------------------------------------------------------------------------
#include "AliMUONResponseV0.h"
-
-#include "AliLog.h"
#include "AliMUON.h"
#include "AliMUONConstants.h"
#include "AliMUONDigit.h"
-#include "AliMUONGeometrySegmentation.h"
#include "AliMUONGeometryTransformer.h"
#include "AliMUONHit.h"
-#include "AliMUONSegmentation.h"
+#include "AliMUONConstants.h"
+
#include "AliMpArea.h"
#include "AliMpDEManager.h"
#include "AliMpVPadIterator.h"
+#include "AliMpSegmentation.h"
#include "AliMpVSegmentation.h"
+#include "AliMpCathodType.h"
+
#include "AliRun.h"
+#include "AliLog.h"
+
#include "Riostream.h"
#include "TVector2.h"
#include <TMath.h>
#include <TRandom.h>
+using std::endl;
+using std::cout;
+/// \cond CLASSIMP
ClassImp(AliMUONResponseV0)
+/// \endcond
AliMUON* muon()
{
void Global2Local(Int_t detElemId, Double_t xg, Double_t yg, Double_t zg,
Double_t& xl, Double_t& yl, Double_t& zl)
{
- // ideally should be :
- // Double_t x,y,z;
- // AliMUONGeometry::Global2Local(detElemId,xg,yg,zg,x,y,z);
- // but while waiting for this geometry singleton, let's go through
- // AliMUON still.
+ /// ideally should be :
+ /// Double_t x,y,z;
+ /// AliMUONGeometry::Global2Local(detElemId,xg,yg,zg,x,y,z);
+ /// but while waiting for this geometry singleton, let's go through
+ /// AliMUON still.
const AliMUONGeometryTransformer* transformer = muon()->GetGeometryTransformer();
transformer->Global2Local(detElemId,xg,yg,zg,xl,yl,zl);
}
-AliMUONSegmentation* Segmentation()
-{
- static AliMUONSegmentation* segmentation = muon()->GetSegmentation();
- return segmentation;
-}
-
//__________________________________________________________________________
AliMUONResponseV0::AliMUONResponseV0()
: AliMUONResponse(),
fChargeSpreadY(0.0),
fSigmaIntegration(0.0),
fMaxAdc(0),
+ fSaturation(0),
fZeroSuppression(0),
fChargeCorrel(0.0),
fMathieson(new AliMUONMathieson),
- fChargeThreshold(1e-4)
+ fChargeThreshold(1e-4),
+ fIsTailEffect(kFALSE)
{
- // Normal constructor
+ /// Normal constructor
AliDebug(1,Form("Default ctor"));
}
- //_________________________________________________________________________
-AliMUONResponseV0::AliMUONResponseV0(const AliMUONResponseV0& rhs)
- : AliMUONResponse(rhs)
+//__________________________________________________________________________
+AliMUONResponseV0::AliMUONResponseV0(const AliMUONResponseV0& other)
+: AliMUONResponse(),
+fChargeSlope(0.0),
+fChargeSpreadX(0.0),
+fChargeSpreadY(0.0),
+fSigmaIntegration(0.0),
+fMaxAdc(0),
+fSaturation(0),
+fZeroSuppression(0),
+fChargeCorrel(0.0),
+fMathieson(0),
+fChargeThreshold(1e-4),
+fIsTailEffect(kFALSE)
{
-// Protected copy constructor
+ /// copy ctor
+ other.CopyTo(*this);
+}
- AliFatal("Not implemented.");
+//__________________________________________________________________________
+AliMUONResponseV0&
+AliMUONResponseV0::operator=(const AliMUONResponseV0& other)
+{
+ /// Assignment operator
+ other.CopyTo(*this);
+ return *this;
}
- //__________________________________________________________________________
+//__________________________________________________________________________
AliMUONResponseV0::~AliMUONResponseV0()
{
+/// Destructor
+
AliDebug(1,"");
delete fMathieson;
}
- //________________________________________________________________________
-AliMUONResponseV0& AliMUONResponseV0::operator = (const AliMUONResponseV0& rhs)
+//______________________________________________________________________________
+void
+AliMUONResponseV0::CopyTo(AliMUONResponseV0& other) const
{
-// Protected assignement operator
-
- if (this == &rhs) return *this;
-
- AliFatal("Not implemented.");
-
- return *this;
+ /// Copy *this to other
+ other.fChargeSlope=fChargeSlope;
+ other.fChargeSpreadX=fChargeSpreadX;
+ other.fChargeSpreadY=fChargeSpreadY;
+ other.fSigmaIntegration=fSigmaIntegration;
+ other.fMaxAdc=fMaxAdc;
+ other.fSaturation=fSaturation;
+ other.fZeroSuppression=fZeroSuppression;
+ other.fChargeCorrel=fChargeCorrel;
+ delete other.fMathieson;
+ other.fMathieson = new AliMUONMathieson(*fMathieson);
+ other.fChargeThreshold=fChargeThreshold;
}
//______________________________________________________________________________
void
AliMUONResponseV0::Print(Option_t*) const
{
-// Printing
+/// Printing
cout << " ChargeSlope=" << fChargeSlope
<< " ChargeSpreadX,Y=" << fChargeSpreadX
<< fChargeSpreadY
<< " ChargeCorrelation=" << fChargeCorrel
<< endl;
-
-//Float_t fChargeSlope; // Slope of the charge distribution
-//Float_t fChargeSpreadX; // Width of the charge distribution in x
-//Float_t fChargeSpreadY; // Width of the charge distribution in y
-//Float_t fSigmaIntegration; // Number of sigma's used for charge distribution
-//Int_t fMaxAdc; // Maximum ADC channel
-//Int_t fSaturation; // Pad saturation in ADC channel
-//Int_t fZeroSuppression; // Zero suppression threshold
-//Float_t fChargeCorrel; // amplitude of charge correlation on 2 cathods
-// // is RMS of ln(q1/q2)
-//AliMUONMathieson* fMathieson; // pointer to mathieson fct
-//Float_t fChargeThreshold; // Charges below this threshold are = 0
-//
-
}
//__________________________________________________________________________
void AliMUONResponseV0::SetSqrtKx3AndDeriveKx2Kx4(Float_t SqrtKx3)
{
- // Set to "SqrtKx3" the Mathieson parameter K3 ("fSqrtKx3")
- // in the X direction, perpendicular to the wires,
- // and derive the Mathieson parameters K2 ("fKx2") and K4 ("fKx4")
- // in the same direction
+ /// Set to "SqrtKx3" the Mathieson parameter K3 ("fSqrtKx3")
+ /// in the X direction, perpendicular to the wires,
+ /// and derive the Mathieson parameters K2 ("fKx2") and K4 ("fKx4")
+ /// in the same direction
fMathieson->SetSqrtKx3AndDeriveKx2Kx4(SqrtKx3);
}
//__________________________________________________________________________
void AliMUONResponseV0::SetSqrtKy3AndDeriveKy2Ky4(Float_t SqrtKy3)
{
- // Set to "SqrtKy3" the Mathieson parameter K3 ("fSqrtKy3")
- // in the Y direction, along the wires,
- // and derive the Mathieson parameters K2 ("fKy2") and K4 ("fKy4")
- // in the same direction
+ /// Set to "SqrtKy3" the Mathieson parameter K3 ("fSqrtKy3")
+ /// in the Y direction, along the wires,
+ /// and derive the Mathieson parameters K2 ("fKy2") and K4 ("fKy4")
+ /// in the same direction
fMathieson->SetSqrtKy3AndDeriveKy2Ky4(SqrtKy3);
}
//__________________________________________________________________________
Float_t AliMUONResponseV0::IntPH(Float_t eloss) const
{
- // Calculate charge from given ionization energy loss
+ /// Calculate charge from given ionization energy loss
Int_t nel;
nel= Int_t(eloss*1.e9/27.4);
Float_t charge=0;
return charge;
}
- //-------------------------------------------
-Float_t AliMUONResponseV0::IntXY(Int_t idDE,
- AliMUONGeometrySegmentation* segmentation)
-const
-{
- // Calculate charge on current pad according to Mathieson distribution
-
- return fMathieson->IntXY(idDE, segmentation);
-}
-
-
- //-------------------------------------------
-Int_t AliMUONResponseV0::DigitResponse(Int_t digit,
- AliMUONTransientDigit* /*where*/)
-const
-{
- // \deprecated method
- // Now part of the digitizer (where it belongs really), e.g. DigitizerV3
- //
- // add white noise and do zero-suppression and signal truncation
-
- // Float_t meanNoise = gRandom->Gaus(1, 0.2);
- // correct noise for slat chambers;
- // one more field to add to AliMUONResponseV0 to allow different noises ????
-// Float_t meanNoise = gRandom->Gaus(1., 0.2);
-// Float_t noise = gRandom->Gaus(0., meanNoise);
- Float_t noise = gRandom->Gaus(0., 1.0);
- digit += TMath::Nint(noise);
- if ( digit <= ZeroSuppression()) digit = 0;
- // if ( digit > MaxAdc()) digit=MaxAdc();
- if ( digit > Saturation())
- {
- digit=Saturation();
- }
-
- return digit;
-}
-
//_____________________________________________________________________________
Float_t
AliMUONResponseV0::GetAnod(Float_t x) const
{
- //
- // Return wire coordinate closest to x.
- //
+ /// Return wire coordinate closest to x.
+
Int_t n = Int_t(x/Pitch());
Float_t wire = (x>0) ? n+0.5 : n-0.5;
return Pitch()*wire;
//______________________________________________________________________________
void
-AliMUONResponseV0::DisIntegrate(const AliMUONHit& hit, TList& digits)
+AliMUONResponseV0::DisIntegrate(const AliMUONHit& hit, TList& digits, Float_t timeDif)
{
- //
- // Go from 1 hit to a list of digits.
- // The energy deposition of that hit is first converted into charge
- // (in IntPH() method), and then this charge is dispatched on several
- // pads, according to the Mathieson distribution.
- //
+ /// Go from 1 hit to a list of digits.
+ /// The energy deposition of that hit is first converted into charge
+ /// (in IntPH() method), and then this charge is dispatched on several
+ /// pads, according to the Mathieson distribution.
digits.Clear();
Int_t detElemId = hit.DetElemId();
-
+ Double_t hitX = hit.X() ;
+ Double_t hitY = hit.Y() ;
+ Double_t hitZ = hit.Z() ;
+
// Width of the integration area
Double_t dx = SigmaIntegration()*ChargeSpreadX();
Double_t dy = SigmaIntegration()*ChargeSpreadY();
+ //Modify to take the tailing effect.
+ if(fIsTailEffect){
+ Double_t locX,locY,locZ,globXCenter,globYCenter,globZ;
+ Int_t para = 5; // This parameter is a natural number(excluding zero), higher the value less is the tailing effect
+ Double_t termA = 1.0;
+ Double_t termB = 1.0;
+ if(para>0){
+ for ( Int_t cath = AliMp::kCath0; cath <= AliMp::kCath1; ++cath )
+ {
+ // Get an iterator to loop over pads, within the given area.
+ const AliMpVSegmentation* seg =
+ AliMpSegmentation::Instance()
+ ->GetMpSegmentation(detElemId,AliMp::GetCathodType(cath));
+ AliMp::PlaneType plane = seg->PlaneType();
+
+ if(plane == AliMp::kBendingPlane) {
+ Global2Local(detElemId,hitX,hitY,hitZ,locX,locY,locZ);
+ AliMpPad pad = seg->PadByPosition(locX,locY,kFALSE);
+ if(pad.IsValid()){
+ Double_t locYCenter = pad.GetPositionY();
+ Double_t locXCenter = pad.GetPositionX();
+ const AliMUONGeometryTransformer* transformer = muon()->GetGeometryTransformer();
+ transformer->Local2Global(detElemId,locXCenter,locYCenter,locZ,globXCenter,globYCenter,globZ);
+ for(Int_t itime = 0; itime<para; itime++)
+ termA *= 10.0;
+
+ for(Int_t itime = 0; itime<Int_t((2*para) + 1); itime++)
+ termB *= (hitY - globYCenter) ;
+
+ hitY = hitY + termA*termB;
+ }// if the pad is a valid one
+ }// if bending plane
+ }// cathode loop
+ }// if para > 0 condn
+ }// if tail effect
+
// Use that (dx,dy) to specify the area upon which
// we will iterate to spread charge into.
Double_t x,y,z;
- Global2Local(detElemId,hit.X(),hit.Y(),hit.Z(),x,y,z);
+ Global2Local(detElemId,hitX,hitY,hitZ,x,y,z);
x = GetAnod(x);
- TVector2 hitPosition(x,y);
- AliMpArea area(hitPosition,TVector2(dx,dy));
+ AliMpArea area(x,y,dx,dy);
// Get pulse height from energy loss.
Float_t qtot = IntPH(hit.Eloss());
+ // If from a pileup event we apply a reduction factor to the charge
+ if (timeDif!=0){
+ qtot = AliMUONConstants::ReducedQTot(qtot,timeDif);
+ }
+
+ // Scale the charge to it'll (roughly) be in fC
+ qtot *= AliMUONConstants::DefaultADC2MV()*AliMUONConstants::DefaultA0()*AliMUONConstants::DefaultCapa();
+
// Get the charge correlation between cathodes.
Float_t currentCorrel = TMath::Exp(gRandom->Gaus(0.0,ChargeCorrel()/2.0));
- for ( Int_t cath = 0; cath < 2; ++cath )
+ for ( Int_t cath = AliMp::kCath0; cath <= AliMp::kCath1; ++cath )
{
Float_t qcath = qtot * ( cath == 0 ? currentCorrel : 1.0/currentCorrel);
// Get an iterator to loop over pads, within the given area.
const AliMpVSegmentation* seg =
- Segmentation()->GetMpSegmentation(detElemId,cath);
+ AliMpSegmentation::Instance()
+ ->GetMpSegmentation(detElemId,AliMp::GetCathodType(cath));
AliMpVPadIterator* it = seg->CreateIterator(area);
if ( it->IsDone() )
{
// Exceptional case : iterator is built, but is invalid from the start.
- AliMpPad pad = seg->PadByPosition(area.Position(),kFALSE);
+ AliMpPad pad = seg->PadByPosition(area.GetPositionX(),area.GetPositionY(),
+ kFALSE);
if ( pad.IsValid() )
{
- AliWarning(Form("Got an invalid iterator bug (area.Position() is within "
+ AliDebug(1, Form("Got an invalid iterator bug (area.Position() is within "
" DE but the iterator is void) for detElemId %d cath %d",
detElemId,cath));
}
else
{
- AliError(Form("Got an invalid iterator bug for detElemId %d cath %d."
+ AliDebug(1, Form("Got an invalid iterator bug for detElemId %d cath %d."
"Might be a bad hit ? area.Position()=(%e,%e) "
"Dimensions()=(%e,%e)",
- detElemId,cath,area.Position().X(),area.Position().Y(),
- area.Dimensions().X(),area.Dimensions().Y()));
+ detElemId,cath,area.GetPositionX(),area.GetPositionY(),
+ area.GetDimensionX(),area.GetDimensionY()));
}
delete it;
return;
// For each pad given by the iterator, compute the charge of that
// pad, according to the Mathieson distribution.
AliMpPad pad = it->CurrentItem();
- TVector2 lowerLeft(hitPosition-pad.Position()-pad.Dimensions());
- TVector2 upperRight(lowerLeft + pad.Dimensions()*2.0);
+ TVector2 lowerLeft(TVector2(x,y)-TVector2(pad.GetPositionX(),pad.GetPositionY())-
+ TVector2(pad.GetDimensionX(),pad.GetDimensionY()));
+ TVector2 upperRight(lowerLeft + TVector2(pad.GetDimensionX(),pad.GetDimensionY())*2.0);
Float_t qp = TMath::Abs(fMathieson->IntXY(lowerLeft.X(),lowerLeft.Y(),
upperRight.X(),upperRight.Y()));
- Int_t icharge = Int_t(qp*qcath);
-
- if ( qp > fChargeThreshold )
+ if ( qp > fChargeThreshold &&
+ qp*qcath > AliMUONConstants::DefaultADC2MV()*AliMUONConstants::DefaultA0()*AliMUONConstants::DefaultCapa() )
{
// If we're above threshold, then we create a digit,
// and fill it with relevant information, including electronics.
- AliMUONDigit* d = new AliMUONDigit;
- d->SetDetElemId(detElemId);
- d->SetPadX(pad.GetIndices().GetFirst());
- d->SetPadY(pad.GetIndices().GetSecond());
- d->SetSignal(icharge);
- d->AddPhysicsSignal(d->Signal());
- d->SetCathode(cath);
- d->SetElectronics(pad.GetLocation().GetFirst(),
- pad.GetLocation().GetSecond());
+
+ // note that the second condition above is to be backward compatible (when
+ // the sdigitizer was making a cut on Int_t(qp*qcath) > 0 and qcath was in ADC, not in fC)
+
+ AliMUONDigit* d = new AliMUONDigit(detElemId,pad.GetManuId(),
+ pad.GetManuChannel(),cath);
+ d->SetPadXY(pad.GetIx(),pad.GetIy());
+ d->SetCharge(qp*qcath);
digits.Add(d);
}
it->Next();
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