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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 | ||
16 | /* | |
17 | $Log$ | |
18 | */ | |
19 | ||
20 | #include "AliLhcBeam.h" | |
21 | #include "AliLHC.h" | |
22 | #include <TMath.h> | |
23 | #include <TCanvas.h> | |
24 | #include <TGraph.h> | |
25 | #include <TMultiGraph.h> | |
26 | ||
27 | ClassImp(AliLhcBeam) | |
28 | ||
29 | AliLhcBeam::AliLhcBeam(AliLHC* lhc) | |
30 | { | |
31 | // Constructor | |
32 | fAccelerator = lhc; | |
33 | } | |
34 | ||
35 | AliLhcBeam::AliLhcBeam(const AliLhcBeam& beam) | |
36 | { | |
37 | // copy constructor | |
38 | } | |
39 | ||
40 | AliLhcBeam::~AliLhcBeam() | |
41 | { | |
42 | // Destructor | |
43 | ||
44 | } | |
45 | ||
46 | void AliLhcBeam::Init() | |
47 | { | |
48 | // Initialization | |
49 | printf("\n Initializing Beam"); | |
50 | printf("\n ^^^^^^^^^^^^^^^^^"); | |
51 | // Scale energy with regidity | |
52 | fEnergy *= fZ/fA; | |
53 | fGamma = fEnergy/0.938272; | |
54 | fEmittance = fNEmittance/fGamma; | |
55 | fEmittance0 = fEmittance; | |
56 | fEmittanceL *= fZ; | |
57 | fEmittanceL0 = fEmittanceL; | |
58 | fN0=fN; | |
59 | ||
60 | printf("\n Beam Energy :%10.3e GeV", fEnergy); | |
61 | printf("\n Beam Normalized Emittance :%10.3e cm ", fNEmittance); | |
62 | printf("\n Beam Particles per Bunch :%10.3e ", fN); | |
63 | } | |
64 | ||
65 | void AliLhcBeam::RemoveParticles(Float_t loss) | |
66 | { | |
67 | fN-=loss; | |
68 | } | |
69 | ||
70 | void AliLhcBeam::IncreaseEmittance(Float_t de, Float_t del) | |
71 | { | |
72 | fEmittance *= (1.+de); | |
73 | fEmittanceL *= (1.+del); | |
74 | fEnergySpread *= (1.+del); | |
75 | } | |
76 | ||
77 | AliLhcBeam& AliLhcBeam::operator=(const AliLhcBeam & rhs) | |
78 | { | |
79 | // Assignment operator | |
80 | return *this; | |
81 | } | |
82 | void AliLhcBeam::SetMonitor(Int_t n) | |
83 | { | |
84 | fNmax = n; | |
85 | if (fEmittanceArray) delete fEmittanceArray; | |
86 | if (fEmittanceLArray) delete fEmittanceLArray; | |
87 | ||
88 | ||
89 | fEmittanceArray = new Float_t[n]; | |
90 | fEmittanceLArray = new Float_t[n]; | |
91 | } | |
92 | ||
93 | void AliLhcBeam::Record() | |
94 | { | |
95 | fEmittanceArray [fAccelerator->Nt()] = fEmittance/fEmittance0; | |
96 | fEmittanceLArray[fAccelerator->Nt()] = fEmittanceL/fEmittanceL0; | |
97 | } | |
98 | ||
99 | ||
100 | void AliLhcBeam::DrawPlots() | |
101 | { | |
102 | // Draw monitor plots | |
103 | Float_t* t = fAccelerator->TimeA(); | |
104 | ||
105 | TH1 *e1 = new TH1F("e1","Hor. Emittance",fNmax,0,t[fNmax]); | |
106 | e1->SetMinimum(1); | |
107 | e1->SetMaximum(fEmittanceArray[fNmax]*1.1); | |
108 | e1->SetStats(0); | |
109 | e1->GetXaxis()->SetTitle("t (h)"); | |
110 | e1->GetYaxis()->SetTitle("rel. Emittance (t)"); | |
111 | ||
112 | TH1 *e2 = new TH1F("e2","Long. Emittance",fNmax,0,t[fNmax]); | |
113 | e2->SetMinimum(1); | |
114 | e2->SetMaximum(fEmittanceLArray[fNmax]*1.1); | |
115 | e2->SetStats(0); | |
116 | e2->GetXaxis()->SetTitle("t (h)"); | |
117 | e2->GetYaxis()->SetTitle("rel. Emittance (t)"); | |
118 | ||
119 | ||
120 | TGraph* grE = new TGraph(fNmax, t, fEmittanceArray); | |
121 | grE->SetHistogram(e1); | |
122 | TGraph* grEl = new TGraph(fNmax, t, fEmittanceLArray); | |
123 | grEl->SetHistogram(e2); | |
124 | grEl->SetLineStyle(2); | |
125 | ||
126 | TMultiGraph* mg = new TMultiGraph(); | |
127 | mg->Add(grE); | |
128 | mg->Add(grEl); | |
129 | ||
130 | TCanvas *c2 = new TCanvas("c2","Emittance Increase", 200, 10, 700, 500); | |
131 | c2->SetGrid(); | |
132 | mg->Draw("AC"); | |
133 | mg->GetXaxis()->SetTitle("t (h)"); | |
134 | mg->GetYaxis()->SetTitle("rel. Emittance(t)"); | |
135 | mg->Draw("AC"); | |
136 | } | |
137 | ||
138 | ||
139 | ||
140 |