[u/mrichter/AliRoot.git] / PHOS / PHOS-HTML / fastsimulation.html

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   <title>PHOS FAST SIMULATION Proposal</title>
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<h1>
  PHOS Fast Simulation 
</h1>
At the Offline meeting held during December 1999, it was decided
that each sub-detector makes a Use Case for a fast simulation scheme. Here is what we suggest for PHOS.
<P>

<center><img SRC="usecasefastsimulation.gif" ALT="[Use Case for fast simulation]" height=425 width=483></center>
<P>
This has been implemented in a new class <a href="AliPHOSvFast.html"> AliPHOSvFast </a> ( <a href="AliPHOSvFast_Tree.ps"> 
inheritance tree </a> ). The synopsis goes as follow :
<br> <br>
<pre class="code">      
      AliPHOSvFast::AliDetector
      
      <b>CreateGeometry() </b> {

       describes the coarse outline of PHOS as 5 boxes }

      <b>StepManager()</b> {

       when particle reaches PHOS {
         stop the tracking
         modifiy the attributes (energy, momentum, type) of the primary particle according to the PHOS response
         construct a "virtual" reconstructed particle }
       save the reconstructed particle in a list }

      <b>FinishEvent()</b> {

        write the list in TreeR
        write the TreeR to file }
</pre>
<hr>
<address class="left">
&copy; <a href="mailto:schutz@in2p3.fr">Groupe Photons Subatech</a> <a href="http://www-subatech.in2p3.fr/~photons/subatech/en_index.shtml">[Go
to the GPS Home Page]</a></address>

<address class="right"> 
<!-- Created: Tue Oct 26 19:52:56 CEST 1999 -->
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Last modified: Mon Mar 13 10:47:23 CET 2000
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Commit	Line	Data
65163b68	1	<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
	2	"http://www.w3.org/TR/REC-html40/loose.dtd">
	3	<html>
	4	<head>
	5	<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
	6	<meta name="GENERATOR" content="Mozilla/4.51 [en] (X11; I; Linux 2.2.5-15 i686) [Netscape]">
	7	<title>PHOS FAST SIMULATION Proposal</title>
	8	<!-- Changed by: Yves Schutz, 7-Dec-1999 -->
	9	<link REL="stylesheet" href="http://www-subatech.in2p3.fr/~photons/gps_alice.css" type="text/css">
	10	</head>
	11	<body>
	12
	13
	14	<h1>
	15	PHOS Fast Simulation
	16	</h1>
	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.
	19	<P>
	20
	21	<center><img SRC="usecasefastsimulation.gif" ALT="[Use Case for fast simulation]" height=425 width=483></center>
b2a60966	22	<P>
6596dd3e	23	This has been implemented in a new class <a href="AliPHOSvFast.html"> AliPHOSvFast </a> ( <a href="AliPHOSvFast_Tree.ps">
b2a60966	24	inheritance tree </a> ). The synopsis goes as follow :
	25	<br> <br>
	26	<pre class="code">
	27	AliPHOSvFast::AliDetector
	28
	29	<b>CreateGeometry() </b> {
	30
	31	describes the coarse outline of PHOS as 5 boxes }
	32
	33	<b>StepManager()</b> {
	34
	35	when particle reaches PHOS {
	36	stop the tracking
	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 }
65163b68	40
b2a60966	41	<b>FinishEvent()</b> {
65163b68	42
b2a60966	43	write the list in TreeR
	44	write the TreeR to file }
	45	</pre>
65163b68	46	<hr>
	47	<address class="left">
	48	© <a href="mailto:schutz@in2p3.fr">Groupe Photons Subatech</a> <a href="http://www-subatech.in2p3.fr/~photons/subatech/en_index.shtml">[Go
	49	to the GPS Home Page]</a></address>
	50
	51	<address class="right">
	52	<!-- Created: Tue Oct 26 19:52:56 CEST 1999 -->
	53	<!-- hhmts start -->
6596dd3e	54	Last modified: Mon Mar 13 10:47:23 CET 2000
65163b68	55	<!-- hhmts end --></address>
	56
	57	<div align=right><a href="http://validator.w3.org/check/referer"><img SRC="vh40.gif" ALT="Valid HTML 4.0!" BORDER=0 height=31 width=88></a><a href="http://jigsaw.w3.org/css-validator"><img SRC="vcss.gif" ALT="Valid CSS!" BORDER=0 height=31 width=88></a></div>
	58
	59	</body>
	60	</html>