Adding Domenico Colella as responsible for SPD part in TRI pp
[u/mrichter/AliRoot.git] / FASTSIM / AliFastMuonTrackingEff.cxx
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6255180c 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
803d1ab0 16/* $Id$ */
a42548b0 17//
18// Class for fast simulation of the ALICE Muon Spectrometer
19// Tracking Efficiency.
20// The efficiency depends on trasverse momentum pt, polar angle theta and azimuthal angle phi.
21//
22// Author: Alessandro de Falco
23// alessandro.de.falco@ca.infn.it
24//
090026bf 25
26#include <TMath.h>
27
6255180c 28#include "AliFastMuonTrackingEff.h"
29#include "AliMUONFastTracking.h"
30
31ClassImp(AliFastMuonTrackingEff)
32
33
34AliFastMuonTrackingEff::AliFastMuonTrackingEff() :
e6e76983 35 AliFastResponse("Efficiency", "Muon Tracking Efficiency"),
36 fBackground(1.),
37 fCharge(1.),
38 fFastTracking(0)
6255180c 39{
a42548b0 40//
41// Constructor
6255180c 42}
43
a42548b0 44AliFastMuonTrackingEff::AliFastMuonTrackingEff(const AliFastMuonTrackingEff& eff)
e6e76983 45 :AliFastResponse(eff),
46 fBackground(1.),
47 fCharge(1.),
48 fFastTracking(0)
a42548b0 49{
50// Copy constructor
51 eff.Copy(*this);
52}
53
6255180c 54void AliFastMuonTrackingEff::Init()
55{
a42548b0 56//
57// Initialization
6255180c 58 fFastTracking = AliMUONFastTracking::Instance();
59 fFastTracking->Init(fBackground);
60}
61
62
63
20432218 64Float_t AliFastMuonTrackingEff::Evaluate(Float_t /*charge*/, Float_t pt, Float_t theta, Float_t phi)
6255180c 65{
a42548b0 66//
67// Evaluate the efficience for muon with 3-vector (pt, theta, phi)
6255180c 68 Float_t p = pt / TMath::Sin(theta*TMath::Pi()/180.);
69 Float_t eff = fFastTracking->Efficiency(p, theta, phi, Int_t(fCharge));
70 return eff;
71}
a42548b0 72
20432218 73
a42548b0 74AliFastMuonTrackingEff& AliFastMuonTrackingEff::operator=(const AliFastMuonTrackingEff& rhs)
75{
76// Assignment operator
77 rhs.Copy(*this);
78 return *this;
79}
80