[u/mrichter/AliRoot.git] / MUON / AliMUONResponseTriggerV1.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/* $Id$ */

// ------------------
// Class AliMUONTriggerResponseV1
// ------------------
// Trigger chamber response 
// with cluster size activated

#include "AliMUONResponseTriggerV1.h"
#include "AliMUON.h"
#include "AliMUONDigit.h"
#include "AliMUONGeometryTransformer.h"
#include "AliMUONConstants.h"

#include "AliMpPad.h"
#include "AliMpSegmentation.h"
#include "AliMpVSegmentation.h"
#include "AliMpCathodType.h"

#include "AliRun.h"

#include <TMath.h>
#include <TRandom.h>

/// \cond CLASSIMP
ClassImp(AliMUONResponseTriggerV1)
/// \endcond

namespace
{
  AliMUON* muon()
  {
    return static_cast<AliMUON*>(gAlice->GetModule("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.
  
    const AliMUONGeometryTransformer* transformer = muon()->GetGeometryTransformer();
    transformer->Global2Local(detElemId,xg,yg,zg,xl,yl,zl);
  }

}

//------------------------------------------------------------------   
AliMUONResponseTriggerV1::AliMUONResponseTriggerV1()
    : AliMUONResponseTrigger(),
      fGenerCluster(0),
      fA(0),
      fB(0),       
      fC(0)
{
/// default constructor 
  Float_t hv=9.2;
  SetParameters(hv);
}

//------------------------------------------------------------------   
AliMUONResponseTriggerV1::AliMUONResponseTriggerV1(Float_t hv)
    : AliMUONResponseTrigger(),
      fGenerCluster(0),
      fA(0),
      fB(0),       
      fC(0)
{
/// Constructor 
  SetParameters(hv);
}

//------------------------------------------------------------------   
AliMUONResponseTriggerV1::~AliMUONResponseTriggerV1()
{
/// destructor 
}

//------------------------------------------------------------------   
void AliMUONResponseTriggerV1::SetParameters(Float_t hv)
{
/// initialize parameters accoring to HV
/// (see V.Barret B.Espagnon and P.Rosnet Alice/note xxx)
  fA = 6.089 * hv - 52.70;
  fB = 2.966;
  fC = 4.3e-4 * hv - 3.5e-3;
}

//------------------------------------------------------------------   
Int_t AliMUONResponseTriggerV1::SetGenerCluster()
{
/// Set the GenerCluster parameter and return 1
  fGenerCluster = gRandom->Rndm();
  return 1;
}

//------------------------------------------------------------------   
Float_t AliMUONResponseTriggerV1::FireStripProb(Float_t x4, Float_t theta)
const
{
/// parametrisation of the probability that a strip neighbour of the main 
/// strip is fired (V.Barret B.Espagnon and P.Rosnet INT/DIM/01-04 (2001)
/// WARNING : need to convert x4 from cm to mm

 return 
     (TMath::Cos(theta)*fA/(fA+TMath::Cos(theta)*TMath::Power(x4*10.,fB))+fC)/
     (TMath::Cos(theta)+fC);
}

//------------------------------------------------------------------  
void AliMUONResponseTriggerV1::DisIntegrate(const AliMUONHit& hit, TList& digits)
{
  /// Generate digits (on each cathode) from 1 hit, with cluster-size
  /// generation.
  
  digits.Clear();
  
  Float_t xhit = hit.X();
  Float_t yhit = hit.Y();
  Float_t zhit = 0; // FIXME : should it be hit.Z() ?
  Int_t detElemId = hit.DetElemId();  
  
  Double_t x,y,z;
  Global2Local(detElemId,xhit,yhit,zhit,x,y,z);
  
  Float_t tof = hit.Age();
  Int_t twentyNano(100);
  if (tof<AliMUONConstants::TriggerTofLimit())
  {
    twentyNano=1;
  }

  for ( Int_t cath = AliMp::kCath0; cath <= AliMp::kCath1; ++cath )
  {
    const AliMpVSegmentation* seg 
      = AliMpSegmentation::Instance()
        ->GetMpSegmentation(detElemId,AliMp::GetCathodType(cath));

    AliMpPad pad = seg->PadByPosition(TVector2(x,y),kFALSE);
    Int_t ix = pad.GetIndices().GetFirst();
    Int_t iy = pad.GetIndices().GetSecond();
    
    AliMUONDigit* d = new AliMUONDigit(detElemId,pad.GetLocation().GetFirst(),
                                       pad.GetLocation().GetSecond(),
                                       cath);
    d->SetPadXY(ix,iy);

    d->SetCharge(twentyNano);
    digits.Add(d);

    SetGenerCluster(); // 1 randum number per cathode (to be checked)

    Int_t xList[10], yList[10];
    Neighbours(cath,ix,iy,xList,yList);
    
//    cout << " detElemId cath ix iy = " << detElemId << " " << cath 
//	 << " " << ix << " " << iy << "\n";
//    for (Int_t i=0; i<10; i++) cout << " " << xList[i] << " " << yList[i];
//    cout << "\n";

    Int_t qp = 0; // fired/no-fired strip = 1/0
    for (Int_t i=0; i<10; i++) { // loop on neighbors
	if (i==0||i==5||qp!=0) { // built-up cluster
	    
	    // need to iterate in iy/ix for bending/non-bending plane
	    Int_t ixNeigh = ( cath == 0 ) ? ix : xList[i];
	    Int_t iyNeigh = ( cath == 0 ) ? yList[i] : iy;
	    
	    AliMpIntPair pairNeigh = AliMpIntPair(ixNeigh,iyNeigh);
	    AliMpPad padNeigh = seg->PadByIndices(pairNeigh,kFALSE);
	    if(padNeigh.IsValid()){ // existing neighbourg		
		
		Int_t dix=-(ixNeigh-ix);
		Int_t diy=-(iyNeigh-iy);
		Float_t xlocalNeigh = padNeigh.Position().X();
		Float_t ylocalNeigh = padNeigh.Position().Y();
		Float_t dpx = padNeigh.Dimensions().X();
		Float_t dpy = padNeigh.Dimensions().Y();
		Float_t distX = TMath::Abs((Float_t)dix) * ((Float_t)dix * dpx + xlocalNeigh - x);
		Float_t distY = TMath::Abs((Float_t)diy) * ((Float_t)diy * dpy + ylocalNeigh - y);
		Float_t dist = TMath::Sqrt(distX*distX+distY*distY);
		
//		cout << " here " << dist << " " << fGenerCluster << " " << FireStripProb(dist,0) << "\n";
		
		if (fGenerCluster<FireStripProb(dist,0)) qp = 1;
		else qp = 0;
		
		if (qp == 1) { // this digit is fired    
		    AliMUONDigit* dNeigh = new AliMUONDigit(detElemId,padNeigh.GetLocation().GetFirst(),
                                                padNeigh.GetLocation().GetSecond(),
                                                cath);
		    
		    dNeigh->SetPadXY(ixNeigh,iyNeigh);      
		    dNeigh->SetCharge(twentyNano);
		    digits.Add(dNeigh);
		} // digit fired		
	    } // pad is valid
	} // built-up cluster
    } // loop on neighbors
  } // loop on cathode
}

//------------------------------------------------------------------  
void AliMUONResponseTriggerV1::Neighbours(const Int_t cath, 
					  const Int_t ix, const Int_t iy, 
					  Int_t Xlist[10], Int_t Ylist[10]) 
{
    ///-----------------BENDING-----------------------------------------      /n
    /// Returns list of 10 next neighbours for given X strip (ix, iy)         /n
    /// neighbour number 4 in the list -                                      /n    
    /// neighbour number 3 in the list  |                                     /n   
    /// neighbour number 2 in the list  |_ Upper part                         /n         
    /// neighbour number 1 in the list  |                                     /n    
    /// neighbour number 0 in the list -                                      /n   
    ///      X strip (ix, iy)                                                 /n
    /// neighbour number 5 in the list -                                      /n
    /// neighbour number 6 in the list  | _ Lower part                        /n
    /// neighbour number 7 in the list  |                                     /n
    /// neighbour number 8 in the list  |                                     /n
    /// neighbour number 9 in the list -                                      /n
    ///                                                                       /n
    ///-----------------NON-BENDING-------------------------------------      /n
    /// Returns list of 10 next neighbours for given Y strip (ix, iy)         /n 
    /// neighbour number 9 8 7 6 5 (Y strip (ix, iy)) 0 1 2 3 4 in the list   /n 
    ///                  |_______|                    |_______/               /n 

    ///                    left                         right                 /n
    
    for (Int_t i=0; i<10; i++) {
	Xlist[i]=-1;
	Ylist[i]=-1;
    }
    
    Int_t iList[10]={9,8,7,6,5, 0,1,2,3,4};

    // need to iterate in iy/ix for bending/non-bending plane
    Int_t iNeigh = ( cath == 0 ) ? iy : ix;
    
    Int_t i=0;
    for (Int_t j=iNeigh-5; j<=iNeigh+5; j++){
	if (j == iNeigh) continue;
	// need to iterate in iy/ix for bending/non-bending plane
	Int_t ixNeigh = ( cath == 0 ) ? ix : j;
	Int_t iyNeigh = ( cath == 0 ) ? j : iy;
	
//	cout << " " << cath << " " << ix << " " << iy 
//	     << " "  << ixNeigh << " " << iyNeigh << "\n";
	
	Xlist[iList[i]]=ixNeigh;	
	Ylist[iList[i]]=iyNeigh;	
	i++;
    } 
}
Commit	Line	Data
e087fe7f	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	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	**************************************************************************/
	15
30178c30	16	/* $Id$ */
e087fe7f	17
d1525c79	18	// ------------------
	19	// Class AliMUONTriggerResponseV1
	20	// ------------------
	21	// Trigger chamber response
	22	// with cluster size activated
	23
e087fe7f	24	#include "AliMUONResponseTriggerV1.h"
4e702a25	25	#include "AliMUON.h"
	26	#include "AliMUONDigit.h"
	27	#include "AliMUONGeometryTransformer.h"
d344444e	28	#include "AliMUONConstants.h"
e087fe7f	29
9265505b	30	#include "AliMpPad.h"
	31	#include "AliMpSegmentation.h"
	32	#include "AliMpVSegmentation.h"
866c3232	33	#include "AliMpCathodType.h"
9265505b	34
	35	#include "AliRun.h"
	36
	37	#include <TMath.h>
	38	#include <TRandom.h>
	39
	40	/// \cond CLASSIMP
e087fe7f	41	ClassImp(AliMUONResponseTriggerV1)
9265505b	42	/// \endcond
e087fe7f	43
4e702a25	44	namespace
	45	{
	46	AliMUON* muon()
	47	{
	48	return static_cast<AliMUON*>(gAlice->GetModule("MUON"));
	49	}
	50
	51	void Global2Local(Int_t detElemId, Double_t xg, Double_t yg, Double_t zg,
	52	Double_t& xl, Double_t& yl, Double_t& zl)
	53	{
	54	// ideally should be :
	55	// Double_t x,y,z;
	56	// AliMUONGeometry::Global2Local(detElemId,xg,yg,zg,x,y,z);
	57	// but while waiting for this geometry singleton, let's go through
	58	// AliMUON still.
	59
	60	const AliMUONGeometryTransformer* transformer = muon()->GetGeometryTransformer();
	61	transformer->Global2Local(detElemId,xg,yg,zg,xl,yl,zl);
	62	}
	63
4e702a25	64	}
4e702a25	65
e087fe7f	66	//------------------------------------------------------------------
30178c30	67	AliMUONResponseTriggerV1::AliMUONResponseTriggerV1()
1657f946	68	: AliMUONResponseTrigger(),
	69	fGenerCluster(0),
	70	fA(0),
	71	fB(0),
	72	fC(0)
30178c30	73	{
9265505b	74	/// default constructor
e087fe7f	75	Float_t hv=9.2;
	76	SetParameters(hv);
	77	}
	78
	79	//------------------------------------------------------------------
30178c30	80	AliMUONResponseTriggerV1::AliMUONResponseTriggerV1(Float_t hv)
1657f946	81	: AliMUONResponseTrigger(),
	82	fGenerCluster(0),
	83	fA(0),
	84	fB(0),
	85	fC(0)
30178c30	86	{
9265505b	87	/// Constructor
e087fe7f	88	SetParameters(hv);
	89	}
	90
	91	//------------------------------------------------------------------
9265505b	92	AliMUONResponseTriggerV1::~AliMUONResponseTriggerV1()
	93	{
	94	/// destructor
	95	}
	96
	97	//------------------------------------------------------------------
	98	void AliMUONResponseTriggerV1::SetParameters(Float_t hv)
	99	{
	100	/// initialize parameters accoring to HV
	101	/// (see V.Barret B.Espagnon and P.Rosnet Alice/note xxx)
e087fe7f	102	fA = 6.089 * hv - 52.70;
	103	fB = 2.966;
	104	fC = 4.3e-4 * hv - 3.5e-3;
	105	}
	106
	107	//------------------------------------------------------------------
9265505b	108	Int_t AliMUONResponseTriggerV1::SetGenerCluster()
	109	{
	110	/// Set the GenerCluster parameter and return 1
e087fe7f	111	fGenerCluster = gRandom->Rndm();
e087fe7f	112	return 1;
337c9041	113	}
e087fe7f	114
e087fe7f	115	//------------------------------------------------------------------
85fec35d	116	Float_t AliMUONResponseTriggerV1::FireStripProb(Float_t x4, Float_t theta)
	117	const
	118	{
71a2d3aa	119	/// parametrisation of the probability that a strip neighbour of the main
	120	/// strip is fired (V.Barret B.Espagnon and P.Rosnet INT/DIM/01-04 (2001)
	121	/// WARNING : need to convert x4 from cm to mm
e087fe7f	122
4e702a25	123	return
	124	(TMath::Cos(theta)fA/(fA+TMath::Cos(theta)TMath::Power(x4*10.,fB))+fC)/
	125	(TMath::Cos(theta)+fC);
	126	}
	127
	128	//------------------------------------------------------------------
	129	void AliMUONResponseTriggerV1::DisIntegrate(const AliMUONHit& hit, TList& digits)
	130	{
9265505b	131	/// Generate digits (on each cathode) from 1 hit, with cluster-size
9265505b	132	/// generation.
4e702a25	133
	134	digits.Clear();
	135
	136	Float_t xhit = hit.X();
	137	Float_t yhit = hit.Y();
	138	Float_t zhit = 0; // FIXME : should it be hit.Z() ?
	139	Int_t detElemId = hit.DetElemId();
	140
	141	Double_t x,y,z;
	142	Global2Local(detElemId,xhit,yhit,zhit,x,y,z);
	143
	144	Float_t tof = hit.Age();
	145	Int_t twentyNano(100);
d344444e	146	if (tof<AliMUONConstants::TriggerTofLimit())
4e702a25	147	{
	148	twentyNano=1;
	149	}
	150
866c3232	151	for ( Int_t cath = AliMp::kCath0; cath <= AliMp::kCath1; ++cath )
4e702a25	152	{
9265505b	153	const AliMpVSegmentation* seg
866c3232	154	= AliMpSegmentation::Instance()
866c3232	155	->GetMpSegmentation(detElemId,AliMp::GetCathodType(cath));
4e702a25	156
	157	AliMpPad pad = seg->PadByPosition(TVector2(x,y),kFALSE);
	158	Int_t ix = pad.GetIndices().GetFirst();
	159	Int_t iy = pad.GetIndices().GetSecond();
	160
2a7d64a9	161	AliMUONDigit* d = new AliMUONDigit(detElemId,pad.GetLocation().GetFirst(),
	162	pad.GetLocation().GetSecond(),
	163	cath);
	164	d->SetPadXY(ix,iy);
4e702a25	165
2a7d64a9	166	d->SetCharge(twentyNano);
4e702a25	167	digits.Add(d);
	168
	169	SetGenerCluster(); // 1 randum number per cathode (to be checked)
	170
	171	Int_t xList[10], yList[10];
	172	Neighbours(cath,ix,iy,xList,yList);
	173
	174	// cout << " detElemId cath ix iy = " << detElemId << " " << cath
	175	// << " " << ix << " " << iy << "\n";
	176	// for (Int_t i=0; i<10; i++) cout << " " << xList[i] << " " << yList[i];
	177	// cout << "\n";
	178
	179	Int_t qp = 0; // fired/no-fired strip = 1/0
	180	for (Int_t i=0; i<10; i++) { // loop on neighbors
	181	if (i==0\|\|i==5\|\|qp!=0) { // built-up cluster
	182
	183	// need to iterate in iy/ix for bending/non-bending plane
	184	Int_t ixNeigh = ( cath == 0 ) ? ix : xList[i];
	185	Int_t iyNeigh = ( cath == 0 ) ? yList[i] : iy;
	186
	187	AliMpIntPair pairNeigh = AliMpIntPair(ixNeigh,iyNeigh);
	188	AliMpPad padNeigh = seg->PadByIndices(pairNeigh,kFALSE);
	189	if(padNeigh.IsValid()){ // existing neighbourg
	190
	191	Int_t dix=-(ixNeigh-ix);
	192	Int_t diy=-(iyNeigh-iy);
	193	Float_t xlocalNeigh = padNeigh.Position().X();
	194	Float_t ylocalNeigh = padNeigh.Position().Y();
	195	Float_t dpx = padNeigh.Dimensions().X();
	196	Float_t dpy = padNeigh.Dimensions().Y();
	197	Float_t distX = TMath::Abs((Float_t)dix) * ((Float_t)dix * dpx + xlocalNeigh - x);
	198	Float_t distY = TMath::Abs((Float_t)diy) * ((Float_t)diy * dpy + ylocalNeigh - y);
	199	Float_t dist = TMath::Sqrt(distXdistX+distYdistY);
	200
	201	// cout << " here " << dist << " " << fGenerCluster << " " << FireStripProb(dist,0) << "\n";
	202
	203	if (fGenerCluster<FireStripProb(dist,0)) qp = 1;
	204	else qp = 0;
	205
	206	if (qp == 1) { // this digit is fired
2a7d64a9	207	AliMUONDigit* dNeigh = new AliMUONDigit(detElemId,padNeigh.GetLocation().GetFirst(),
	208	padNeigh.GetLocation().GetSecond(),
	209	cath);
4e702a25	210
2a7d64a9	211	dNeigh->SetPadXY(ixNeigh,iyNeigh);
2a7d64a9	212	dNeigh->SetCharge(twentyNano);
4e702a25	213	digits.Add(dNeigh);
	214	} // digit fired
	215	} // pad is valid
	216	} // built-up cluster
	217	} // loop on neighbors
	218	} // loop on cathode
	219	}
	220
	221	//------------------------------------------------------------------
	222	void AliMUONResponseTriggerV1::Neighbours(const Int_t cath,
	223	const Int_t ix, const Int_t iy,
	224	Int_t Xlist[10], Int_t Ylist[10])
	225	{
9265505b	226	///-----------------BENDING----------------------------------------- /n
	227	/// Returns list of 10 next neighbours for given X strip (ix, iy) /n
	228	/// neighbour number 4 in the list - /n
	229	/// neighbour number 3 in the list \| /n
	230	/// neighbour number 2 in the list \|_ Upper part /n
	231	/// neighbour number 1 in the list \| /n
	232	/// neighbour number 0 in the list - /n
	233	/// X strip (ix, iy) /n
	234	/// neighbour number 5 in the list - /n
	235	/// neighbour number 6 in the list \| _ Lower part /n
	236	/// neighbour number 7 in the list \| /n
	237	/// neighbour number 8 in the list \| /n
	238	/// neighbour number 9 in the list - /n
	239	/// /n
	240	///-----------------NON-BENDING------------------------------------- /n
	241	/// Returns list of 10 next neighbours for given Y strip (ix, iy) /n
	242	/// neighbour number 9 8 7 6 5 (Y strip (ix, iy)) 0 1 2 3 4 in the list /n
c4ee792d	243	/// \|_______\| \|_______/ /n
c4ee792d	244
9265505b	245	/// left right /n
4e702a25	246
	247	for (Int_t i=0; i<10; i++) {
	248	Xlist[i]=-1;
	249	Ylist[i]=-1;
	250	}
	251
	252	Int_t iList[10]={9,8,7,6,5, 0,1,2,3,4};
	253
	254	// need to iterate in iy/ix for bending/non-bending plane
	255	Int_t iNeigh = ( cath == 0 ) ? iy : ix;
	256
	257	Int_t i=0;
	258	for (Int_t j=iNeigh-5; j<=iNeigh+5; j++){
	259	if (j == iNeigh) continue;
	260	// need to iterate in iy/ix for bending/non-bending plane
	261	Int_t ixNeigh = ( cath == 0 ) ? ix : j;
	262	Int_t iyNeigh = ( cath == 0 ) ? j : iy;
	263
	264	// cout << " " << cath << " " << ix << " " << iy
	265	// << " " << ixNeigh << " " << iyNeigh << "\n";
	266
	267	Xlist[iList[i]]=ixNeigh;
	268	Ylist[iList[i]]=iyNeigh;
	269	i++;
	270	}
e087fe7f	271	}
e087fe7f	272