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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 | /* $Id$ */ | |
17 | ||
18 | ========================================================== | |
19 | Please add to this README file all information concerning | |
20 | config files, simulation, digitalization, clusterization, | |
21 | reconstruction and macro analysis | |
22 | ||
23 | ========================================================== | |
24 | How to run a MUON generation | |
25 | ========================================================== | |
26 | aliroot | |
27 | root [0] gAlice->Run(10,"$ALICE_ROOT/MUON/Config_MUON_test.C"); | |
28 | ||
29 | 1 single muon of 7 GeV/c in the MUON spectrometer | |
30 | acceptance will be simulated using geant3. | |
31 | Hit information will be store in the root file in the | |
32 | execution directory. | |
33 | If you want to change the option or to define a new directory | |
34 | for hits, you have to do the following before: | |
35 | root [0] gAlice->SetConfigFunction("Config( \"/home/martinez/aliroot/work_NewIO/test/\" , \"box\" );"); | |
36 | ||
37 | ============================================================ | |
38 | How to run MUON Digitalization | |
39 | ============================================================ | |
40 | To process the digitalization of hits the AliRunDigitizer | |
41 | framework is used: | |
42 | ||
43 | AliRunDigitizer * manager = new AliRunDigitizer(1,1); | |
44 | manager->SetInputStream(0,"galice.root"); | |
45 | AliMUONDigitizerv1* dMUON = new AliMUONDigitizerv1(manager) | |
46 | manager->AddDigitizer(dMUON); | |
47 | manager->Exec("deb"); | |
48 | ||
49 | ============================================================ | |
50 | How to run MUON RecPoint clusterization | |
51 | ============================================================ | |
52 | aliroot -b << EOF | |
53 | .includepath $ALICE_ROOT/STEER | |
54 | .includepath $ALICE_ROOT/MUON | |
55 | .L $ALICE_ROOT/MUON/MUONrawclusters.C++ | |
56 | MUONrawclusters("galice.root",0,9999); | |
57 | to Load | |
58 | gSystem->Load("$ALICE_ROOT/MUON/MUONrawclusters_C.so") | |
59 | ||
60 | ============================================================ | |
61 | How to run MUON Trigger | |
62 | ============================================================ | |
63 | .includepath $ALICE_ROOT/STEER | |
64 | .includepath $ALICE_ROOT/MUON | |
65 | .L $ALICE_ROOT/MUON/MUONtrigger.C++ | |
66 | MUONtrigger("galice.root",0,9999); | |
67 | To Load | |
68 | gSystem->Load("$ALICE_ROOT/MUON/MUONtrigger_C.so") | |
69 | ============================================================ | |
70 | How to run MUON Tracking reconstruction (old output) | |
71 | =========================================================== | |
72 | .includepath $ALICE_ROOT/STEER | |
73 | .includepath $ALICE_ROOT/MUON | |
74 | .L $ALICE_ROOT/MUON/MUONrecoNtuple.C++ | |
75 | MUONrecoNtuple(0,9999,0,"galice.root") | |
76 | To Load | |
77 | gSystem->Load("$ALICE_ROOT/MUON/MUONrecoNtuple_C.so") | |
78 | First event and last event are given by hand, but this will change. | |
79 | ||
80 | =========================================================== | |
81 | How to run MUON Tracking reconstruction (new output) | |
82 | =========================================================== | |
83 | .includepath $ALICE_ROOT/STEER | |
84 | .includepath $ALICE_ROOT/MUON | |
85 | .L $ALICE_ROOT/MUON/MUONTracker.C++ | |
86 | MUONTracker("galice.root",0,9999); | |
87 | To Load | |
88 | gSystem->Load("$ALICE_ROOT/MUON/MUONTracker_C.so") | |
89 | Output in MUON.Tracks.root using the new IO | |
90 | as a TClonesArray of AliMUONTrack | |
91 | ||
92 | Note1.In the actual version (dec-03) the following data | |
93 | members of ALiMUONTrack: fgFitter, fEventReconstructor, | |
94 | and fTrackHitsPtr are not saved in the MUON.Track.root file | |
95 | ||
96 | ============================================================ | |
97 | How to run MUONCheck macro | |
98 | ============================================================ | |
99 | To check the content of a root data file, the MUONCheck | |
100 | provides a ascii output on screen. | |
101 | ||
102 | To compile MUONCheck.C | |
103 | .includepath $ALICE_ROOT/STEER | |
104 | .includepath $ALICE_ROOT/MUON | |
105 | .L $ALICE_ROOT/MUON/MUONCheck.C++ | |
106 | To Load | |
107 | gSystem->Load("$ALICE_ROOT/MUON/MUONCheck_C.so") | |
108 | ||
109 | To print Kine : (default file is galice.root ) | |
110 | MUONkine() | |
111 | ||
112 | To print hits : (default file is galice.root if not MUONhits("toto.root""); ) | |
113 | MUONhits() | |
114 | ||
115 | To print digits : (default file is galice.root) | |
116 | MUONdigits() | |
117 | ||
118 | To print rawcluster : (default file is galice.root) | |
119 | MUONrecpoints() | |
120 | ||
121 | To print trigger : (default file is galice.root) | |
122 | MUONTestTrigger() | |
123 | ||
124 | ||
125 | ============================================================ | |
126 | How to check the Geometry | |
127 | ============================================================ | |
128 | gAlice->Init("$ALICE_ROOT/MUON/Config_MUON_test.C"); | |
129 | .L $ALICE/geant3/TGeant3/G3GUI.C | |
130 | G3GUI() | |
131 | ||
132 | ||
133 | ============================================================ | |
134 | How to run MUONdisplay | |
135 | ============================================================ | |
136 | First you need to perform a full simulation: | |
137 | generation, digitalisation and clusterisation | |
138 | .L $ALICE_ROOT/MUON/MUONdisplay.C | |
139 | MUONdisplay(0,"galice.root") | |
140 | ||
141 | ============================================================ | |
142 | Tracking parameters, cuts, energy loss and physics processes | |
143 | ============================================================ | |
144 | Tracking parameters in MUON are automatically defined by GEANT | |
145 | MUON takes the default values of CUTs and physics processes | |
146 | defined by the Config files, except for the gas mixture medium | |
147 | of the tracking chambers. The CUT's and physics processes of | |
148 | the gas mixture medium is then defined in the galice.cuts file | |
149 | in the data directory. In particular ILOSS parameter MUST be | |
150 | equal unity (1) in order simulate a realistic energy loss | |
151 | distribution (mean value and fluctuations) in the active gas. | |
152 | ||
153 | ============================================================ | |
154 | Tracking of particle in the magnetic field | |
155 | ============================================================ | |
156 | GEANT has two ways for tracking charged particles in the | |
157 | magnetic field: HELIX et RKUTA. | |
158 | HELIX is faster and works well if the gradient of magnetic | |
159 | field is small. | |
160 | For MUON, HELIX is a not a good approximation and we must | |
161 | use RKUTA to get the optimal mass resolution of the | |
162 | spectrometer. The choice of HELIX or RKUTA is done in the | |
163 | config file when the magnetic field is defined: | |
164 | AliMagFMaps* field = new AliMagFMaps("Maps","Maps", TRACKING, FACTOR, MAXB, AliMagFMaps::k4kG); | |
165 | gAlice->SetField(field); | |
166 | TRACKING must be 1 for RKUTA and 2 for HELIX (the default value for aliroot is 2 (HELIX)) | |
167 | FACTOR allows you to set the magnetic field to 0, just putting FACTOR=0. Default value is 1. | |
168 | MAXB is the maximum magnetic field which is 10.T | |
169 | ||
170 | =========================================================== | |
171 | Still working .............. | |
172 | =========================================================== |