EffC++ warnings corrected.
[u/mrichter/AliRoot.git] / LHC / AliLhcBeam.cxx
CommitLineData
11141716 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/* $Id$ */
21aa51f2 17//
18// Class that holds all parameters about an LHC beam.
19// The parameters can change with time.
20// A monitor can be set that stores the time distribution of
21// emittance and number of particles per bunch.
22// Author: Andreas Morsch
23// andreas.morsch@cern.ch
24//
11141716 25
26#include "AliLhcBeam.h"
27#include "AliLHC.h"
28#include <TMath.h>
29#include <TCanvas.h>
30#include <TGraph.h>
31#include <TMultiGraph.h>
32
33ClassImp(AliLhcBeam)
34
35AliLhcBeam::AliLhcBeam(AliLHC* lhc)
36{
37// Constructor
38 fAccelerator = lhc;
39}
40
41AliLhcBeam::AliLhcBeam(const AliLhcBeam& beam)
e76f229f 42 : TNamed(beam), AliLhcMonitor(beam)
11141716 43{
44// copy constructor
45}
46
47AliLhcBeam::~AliLhcBeam()
48{
49// Destructor
50
51}
52
53void AliLhcBeam::Init()
54{
55 // Initialization
56 printf("\n Initializing Beam");
57 printf("\n ^^^^^^^^^^^^^^^^^");
58 // Scale energy with regidity
59 fEnergy *= fZ/fA;
60 fGamma = fEnergy/0.938272;
61 fEmittance = fNEmittance/fGamma;
62 fEmittance0 = fEmittance;
63 fEmittanceL *= fZ;
64 fEmittanceL0 = fEmittanceL;
65 fN0=fN;
66
67 printf("\n Beam Energy :%10.3e GeV", fEnergy);
68 printf("\n Beam Normalized Emittance :%10.3e cm ", fNEmittance);
69 printf("\n Beam Particles per Bunch :%10.3e ", fN);
70}
71
72void AliLhcBeam::RemoveParticles(Float_t loss)
73{
74 fN-=loss;
75}
76
77void AliLhcBeam::IncreaseEmittance(Float_t de, Float_t del)
78{
21aa51f2 79//
80// Increase the emittance
11141716 81 fEmittance *= (1.+de);
82 fEmittanceL *= (1.+del);
83 fEnergySpread *= (1.+del);
84}
85
e76f229f 86AliLhcBeam& AliLhcBeam::operator=(const AliLhcBeam & /*rhs*/)
11141716 87{
88// Assignment operator
89 return *this;
90}
91void AliLhcBeam::SetMonitor(Int_t n)
92{
21aa51f2 93//
94// Initialize a monitor with n time bins
11141716 95 fNmax = n;
96 if (fEmittanceArray) delete fEmittanceArray;
97 if (fEmittanceLArray) delete fEmittanceLArray;
98
99
100 fEmittanceArray = new Float_t[n];
101 fEmittanceLArray = new Float_t[n];
102}
103
104void AliLhcBeam::Record()
105{
106 fEmittanceArray [fAccelerator->Nt()] = fEmittance/fEmittance0;
107 fEmittanceLArray[fAccelerator->Nt()] = fEmittanceL/fEmittanceL0;
108}
109
110
111void AliLhcBeam::DrawPlots()
112{
113 // Draw monitor plots
114 Float_t* t = fAccelerator->TimeA();
115
116 TH1 *e1 = new TH1F("e1","Hor. Emittance",fNmax,0,t[fNmax]);
117 e1->SetMinimum(1);
118 e1->SetMaximum(fEmittanceArray[fNmax]*1.1);
119 e1->SetStats(0);
120 e1->GetXaxis()->SetTitle("t (h)");
121 e1->GetYaxis()->SetTitle("rel. Emittance (t)");
122
123 TH1 *e2 = new TH1F("e2","Long. Emittance",fNmax,0,t[fNmax]);
124 e2->SetMinimum(1);
125 e2->SetMaximum(fEmittanceLArray[fNmax]*1.1);
126 e2->SetStats(0);
127 e2->GetXaxis()->SetTitle("t (h)");
128 e2->GetYaxis()->SetTitle("rel. Emittance (t)");
129
130
131 TGraph* grE = new TGraph(fNmax, t, fEmittanceArray);
132 grE->SetHistogram(e1);
133 TGraph* grEl = new TGraph(fNmax, t, fEmittanceLArray);
134 grEl->SetHistogram(e2);
135 grEl->SetLineStyle(2);
136
137 TMultiGraph* mg = new TMultiGraph();
138 mg->Add(grE);
139 mg->Add(grEl);
140
141 TCanvas *c2 = new TCanvas("c2","Emittance Increase", 200, 10, 700, 500);
142 c2->SetGrid();
143 mg->Draw("AC");
144 mg->GetXaxis()->SetTitle("t (h)");
145 mg->GetYaxis()->SetTitle("rel. Emittance(t)");
146 mg->Draw("AC");
147}
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