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7 <title>PHOS FAST SIMULATION Proposal</title>
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17 At the Offline meeting held during December 1999, it was decided
18 that each sub-detector makes a Use Case for a fast simulation scheme. Here is what we suggest for PHOS.
21 <center><img SRC="usecasefastsimulation.gif" ALT="[Use Case for fast simulation]" height=425 width=483></center>
23 This has been implemented in a new class <a href="AliPHOSvFast.html"> AliPHOSvFast </a> ( <a href="AliPHOSvFast_Tree.ps">
24 inheritance tree </a> ). The synopsis goes as follow :
27 AliPHOSvFast::AliDetector
29 <b>CreateGeometry() </b> {
31 describes the coarse outline of PHOS as 5 boxes }
33 <b>StepManager()</b> {
35 when particle reaches PHOS {
37 modifiy the attributes (energy, momentum, type) of the primary particle according to the PHOS response
38 construct a "virtual" reconstructed particle }
39 save the reconstructed particle in a list }
41 <b>FinishEvent()</b> {
43 write the list in TreeR
44 write the TreeR to file }
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52 <!-- Created: Tue Oct 26 19:52:56 CEST 1999 -->
54 Last modified: Mon Mar 13 10:47:23 CET 2000
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