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   5 <TITLE>AliRoot description</TITLE>
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  28 <TD><img src="picts/MadHatter.gif" alt="ALICE Off-line Project Logo">
  29 <TD><img src="picts/manual_name.gif" alt="AliRoot description">
  30 <TD><img src="picts/AliceLogo.gif" alt="ALICE Logo">
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  33
  34 <font size=+2 color=red><blink>This part is under construction.</blink>
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  36
  37 <H2><A NAME="#Content">Content</A></H2>
  38
  39 <UL>
  40 <LI><A HREF="#General">General AliRoot architecture</A></LI>
  41 <LI><A HREF="#Virtual">Virtual MonteCarlo schema</A></LI>
  42 <LI><A HREF="#AliRoot">AliRoot flow of control</A></LI>
  43 </UL>
  44
  45 <HR>
  46
  47 <h2><A HREF="#Content" NAME="General">General AliRoot architecture</A></h2>
  48
  49 <p> This picure is a general schema of the AliRoot architecture.
  50
  51 <center><img src="picts/architecture.gif" height=500></center>
  52
  53 <p> The following picture shows an high-level decomposition of AliRoot
  54 into functional blocks.
  55
  56 <center><img src="picts/aliroot_schema.gif" height=400></center>
  57
  58 <h2><A HREF="#Content" NAME="Virtual">Virtual MonteCarlo schema</A></h2>
  59
  60 <p> This picture illustrates the concept of Virtual MonteCarlo schema
  61 as it is implemented by AliRoot.
  62
  63 <center><img src="picts/virtualmc.gif" height=500></center>
  64
  65 <p> This picture illustrates the stepping action mechanism for the virtual
  66 MC. Only the GEANT&nbsp;3 version is operational, while the GEANT&nbsp;4
  67 one is under testing.
  68
  69 <center><img src="picts/virtualmc2.gif" height=300></center>
  70
  71 <h2><A HREF="#Content" NAME="AliRoot">AliRoot flow of control</A></h2>
  72
  73 <p> This picture illustrates the AliRoot flow of control.
  74
  75 <center><img src="picts/alirootflow.gif" height=300></center>
  76
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  78 <address>
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  83 by <a href="mailto:Federico.Carminati@cern.ch">Federico Carminati</a>
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