Flushing the buffer for debug purposes (R. Preghenella)
[u/mrichter/AliRoot.git] / FASTSIM / AliFastMuonTrackingAcc.cxx
CommitLineData
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/* $Id$ */
6255180c 17
a42548b0 18// Realisation of AliFastResponse for the
19// fast simulation of the muon spectrometer acceptance.
20// The acceptance depends on the muon 3-vector which can be passed as (pt, theta, phi),
21// where pt is the transverse momentum, theta the polar angle and phi the azimuthal angle.
22// Author: Andreas Morsch
23// andreas.morsch@cern.ch
24
090026bf 25#include <TMath.h>
26
6255180c 27#include "AliFastMuonTrackingAcc.h"
28#include "AliMUONFastTracking.h"
29
30ClassImp(AliFastMuonTrackingAcc)
31
32
33AliFastMuonTrackingAcc::AliFastMuonTrackingAcc() :
e6e76983 34 AliFastResponse("Acceptance", "Muon Tracking Acceptance"),
35 fBackground(1.),
36 fCharge(1.),
37 fFastTracking(0)
6255180c 38{
e6e76983 39 // Default Constructor
6255180c 40}
41
a42548b0 42AliFastMuonTrackingAcc::AliFastMuonTrackingAcc(const AliFastMuonTrackingAcc & acc)
e6e76983 43 :AliFastResponse(acc),
44 fBackground(1.),
45 fCharge(1.),
46 fFastTracking(0)
a42548b0 47{
48// Copy constructor
49 acc.Copy(*this);
50}
51
6255180c 52void AliFastMuonTrackingAcc::Init()
53{
54 fFastTracking = AliMUONFastTracking::Instance();
55 fFastTracking->Init(fBackground);
56}
57
58
59
20432218 60Float_t AliFastMuonTrackingAcc::Evaluate(Float_t /*charge*/, Float_t pt, Float_t theta, Float_t phi)
6255180c 61{
a42548b0 62// Evaluate the tracking acceptance for 3-vector pt, theta, phi
6255180c 63 Float_t p = pt / TMath::Sin(theta*TMath::Pi()/180.);
64 Float_t eff = fFastTracking->Acceptance(p, theta, phi, Int_t(fCharge));
65 return eff;
66}
a42548b0 67
68AliFastMuonTrackingAcc& AliFastMuonTrackingAcc::operator=(const AliFastMuonTrackingAcc& rhs)
69{
70// Assignment operator
71 rhs.Copy(*this);
72 return *this;
73}