1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
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
27 #include "AliFastMuonTrackingAcc.h"
28 #include "AliMUONFastTracking.h"
30 ClassImp(AliFastMuonTrackingAcc)
33 AliFastMuonTrackingAcc::AliFastMuonTrackingAcc() :
34 AliFastResponse("Acceptance", "Muon Tracking Acceptance"),
39 // Default Constructor
42 AliFastMuonTrackingAcc::AliFastMuonTrackingAcc(const AliFastMuonTrackingAcc & acc)
43 :AliFastResponse(acc),
52 void AliFastMuonTrackingAcc::Init()
54 fFastTracking = AliMUONFastTracking::Instance();
55 fFastTracking->Init(fBackground);
60 Float_t AliFastMuonTrackingAcc::Evaluate(Float_t /*charge*/, Float_t pt, Float_t theta, Float_t phi)
62 // Evaluate the tracking acceptance for 3-vector pt, theta, phi
63 Float_t p = pt / TMath::Sin(theta*TMath::Pi()/180.);
64 Float_t eff = fFastTracking->Acceptance(p, theta, phi, Int_t(fCharge));
68 AliFastMuonTrackingAcc& AliFastMuonTrackingAcc::operator=(const AliFastMuonTrackingAcc& rhs)
70 // Assignment operator