/* $Id$ */
+// --------------------------
+// Class AliMUONResponseV0
+// --------------------------
+// Implementation of
+// Mathieson response
#include "AliMUONResponseV0.h"
-
-#include "AliLog.h"
#include "AliMUON.h"
#include "AliMUONConstants.h"
#include "AliMUONDigit.h"
#include "AliMUONGeometryTransformer.h"
#include "AliMUONHit.h"
#include "AliMUONSegmentation.h"
+
#include "AliMpArea.h"
#include "AliMpDEManager.h"
-#include "AliMpPlaneType.h"
-#include "AliMpStationType.h"
#include "AliMpVPadIterator.h"
+#include "AliMpSegmentation.h"
#include "AliMpVSegmentation.h"
+
#include "AliRun.h"
+#include "AliLog.h"
+
#include "Riostream.h"
#include "TVector2.h"
#include <TMath.h>
#include <TRandom.h>
+/// \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);
fChargeSpreadY(0.0),
fSigmaIntegration(0.0),
fMaxAdc(0),
+ fSaturation(0),
fZeroSuppression(0),
fChargeCorrel(0.0),
fMathieson(new AliMUONMathieson),
fChargeThreshold(1e-4)
{
- // Normal constructor
+ /// Normal constructor
AliDebug(1,Form("Default ctor"));
}
- //_________________________________________________________________________
-AliMUONResponseV0::AliMUONResponseV0(const AliMUONResponseV0& rhs)
- : AliMUONResponse(rhs)
-{
-// Protected copy constructor
-
- AliFatal("Not implemented.");
-}
-
- //__________________________________________________________________________
+//__________________________________________________________________________
AliMUONResponseV0::~AliMUONResponseV0()
{
+/// Destructor
+
AliDebug(1,"");
delete fMathieson;
}
- //________________________________________________________________________
-AliMUONResponseV0& AliMUONResponseV0::operator = (const AliMUONResponseV0& rhs)
-{
-// Protected assignement operator
-
- if (this == &rhs) return *this;
-
- AliFatal("Not implemented.");
-
- return *this;
-}
-
//______________________________________________________________________________
void
AliMUONResponseV0::Print(Option_t*) const
{
+/// 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)
+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;
}
//-------------------------------------------
-Float_t AliMUONResponseV0::IntXY(Int_t idDE, AliMUONGeometrySegmentation* segmentation)
+Float_t AliMUONResponseV0::IntXY(Int_t idDE,
+ AliMUONGeometrySegmentation* segmentation)
+const
{
- // Calculate charge on current pad according to Mathieson distribution
+ /// Calculate charge on current pad according to Mathieson distribution
return fMathieson->IntXY(idDE, segmentation);
}
- //-------------------------------------------
-Int_t AliMUONResponseV0::DigitResponse(Int_t digit, AliMUONTransientDigit* /*where*/)
-{
-// FIXME : AliFatal("put the pedestal adding here!");
- // 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)
{
- //
- //
- //
+ /// 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();
- //
// Width of the integration area
- //
Double_t dx = SigmaIntegration()*ChargeSpreadX();
Double_t dy = SigmaIntegration()*ChargeSpreadY();
TVector2 hitPosition(x,y);
AliMpArea area(hitPosition,TVector2(dx,dy));
- //
- // Get pulse height from energy loss
+ // Get pulse height from energy loss.
Float_t qtot = IntPH(hit.Eloss());
+ // Get the charge correlation between cathodes.
Float_t currentCorrel = TMath::Exp(gRandom->Gaus(0.0,ChargeCorrel()/2.0));
- AliDebug(4,Form("DE=%d eloss=%e x,y,z=%e,%e,%e fCurrentCorrel=%e dx,dy=%e,%e",
- detElemId,hit.Eloss(),hit.X(),hit.Y(),hit.Z(),
- currentCorrel,dx,dy));
-
- AliMpStationType station = AliMpDEManager::GetStationType(detElemId);
-
- Int_t intOffset = 1;
- if ( station == kStation1 || station == kStation2 )
- {
- intOffset = 0;
- }
-
for ( Int_t cath = 0; cath < 2; ++cath )
{
Float_t qcath = qtot * ( cath == 0 ? currentCorrel : 1.0/currentCorrel);
- AliDebug(4,Form("i=%d qtot=%e qcath=%e",cath+1,qtot,qcath));
// Get an iterator to loop over pads, within the given area.
- const AliMpVSegmentation* seg =
- Segmentation()->GetMpSegmentation(detElemId,cath);
- AliMpVPadIterator* it = seg->CreateIterator(area);
+ const AliMpVSegmentation* seg =
+ AliMpSegmentation::Instance()->GetMpSegmentation(detElemId,cath);
- if (!it)
+ AliMpVPadIterator* it = seg->CreateIterator(area);
+
+ if (!it)
+ {
+ AliError(Form("Could not get iterator for detElemId %d",detElemId));
+ return;
+ }
+
+ // Start loop over pads.
+ it->First();
+
+ if ( it->IsDone() )
+ {
+ // Exceptional case : iterator is built, but is invalid from the start.
+ AliMpPad pad = seg->PadByPosition(area.Position(),kFALSE);
+ if ( pad.IsValid() )
{
- AliError(Form("Could not get iterator for detElemId %d",detElemId));
- return;
+ AliWarning(Form("Got an invalid iterator bug (area.Position() is within "
+ " DE but the iterator is void) for detElemId %d cath %d",
+ detElemId,cath));
}
-
- // Start loop over pads.
- it->First();
- while ( !it->IsDone() )
+ else
{
- AliMpPad pad = it->CurrentItem();
- TVector2 lowerLeft(hitPosition-pad.Position()-pad.Dimensions());
- TVector2 upperRight(lowerLeft + pad.Dimensions()*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 )
- {
- AliDebug(4,Form("ix,iy=%d,%d qp=%e",
- pad.GetIndices().GetFirst()+intOffset,
- pad.GetIndices().GetSecond()+intOffset,
- qp));
- AliMUONDigit* d = new AliMUONDigit;
- d->SetDetElemId(detElemId);
- d->SetPadX(pad.GetIndices().GetFirst()+intOffset);
- d->SetPadY(pad.GetIndices().GetSecond()+intOffset);
- d->SetSignal(icharge);
- d->AddPhysicsSignal(d->Signal());
- d->SetCathode(cath);
- Int_t manuId = pad.GetLocation().GetFirst();
- Int_t manuChannel = pad.GetLocation().GetSecond();
- AliMpPlaneType planeType = AliMpDEManager::GetPlaneType(detElemId,cath);
- if ( planeType == kNonBendingPlane )
- {
- // FIXME: this should not be there, but integrated in the mapping files directly.
- manuId |= (1<<11);
- }
- d->SetElectronics(manuId,manuChannel);
- digits.Add(d);
- }
- it->Next();
+ AliError(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()));
}
delete it;
+ return;
+ }
+
+ while ( !it->IsDone() )
+ {
+ // 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);
+ 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 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());
+ digits.Add(d);
+ }
+ it->Next();
+ }
+ delete it;
}
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff