source: PSPA/madxPSPA/doc/usrguide/ptc_auxiliaries/PTC_Moments.html @ 430

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1<?xml version="1.0" encoding="ISO-8859-1" ?>
2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
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5<html xmlns="http://www.w3.org/1999/xhtml">
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7<head>
8<meta http-equiv=Content-Type content="text/html; charset=iso-8889-2">
9<meta name=Generator content="NEdit">
10<meta name=Originator content="Skowron">
11<link rel="stylesheet" type="text/css" href="../ptc_general/madxdoc_ps.css" />
12<title>PTC_MOMENTS</title>
13<style>
14</style>
15</head>
16
17<body bgcolor="#ffffff"'>
18
19<div style="text-align:center;">
20<center>
21  EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH
22  <IMG SRC="http://cern.ch/madx/icons/mx7_25.gif" align="right">
23  <h1>PTC_MOMENTS</h1>
24 
25</center>
26</div>
27
28
29<!--  ##########################################################              -->
30
31<div class="madxdocContent">
32
33
34<!--  ##########################################################              -->
35<!--  ##########################################################              -->
36<!--  ##########################################################              -->
37
38<h3 align=center style='margin-top:0cm;text-align:left;text-indent:0cm'>
39 <span>
40  USER MANUAL
41 </span>
42</h3>
43
44<div>
45
46<!--  ##########################################################              -->
47
48<h4>SYNOPSIS</h4>
49
50<pre>
51<big>
52PTC_MOMENTS,
53no = [i, 1],
54xdistr   = [s, gauss, gauss],
55ydistr   = [s, gauss, gauss],
56zdistr   = [s, gauss, gauss],
57
58</big>
59</pre>
60
61</div>
62 
63<!--  ##########################################################              -->
64
65<h4> Description </h4>
66
67<div>
68Calculates moments previously selected with the
69<a href="PTC_SelectMoment.html">ptc_select_moment</a> command.
70It uses maps saved by the ptc_twiss command, hence, the savemaps switch of
71ptc_twiss must be set to true (default) to be able to calculate moments.
72
73</div>
74
75<h4> Examples</h4>
76
77<a href="http://cern.ch/frs/mad-X_examples/ptc_madx_interface/moments/moments.madx"> ATF2 </a>
78
79<!--  ##########################################################              -->
80
81<h4> Command parameters and switches </h4>
82<div>
83
84<dl>
85
86
87<dt><b> no </b></dt> 
88  <dd>
89  <i> integer </i>
90  <p> order of the calculation, maximally twise the order of the last twiss
91  </dd>
92
93
94<dt><b> xdistr, ydistr, zdistr </b></dt> 
95  <dd>
96  <i> string defining type of distribution for x, y, z dimension, respectively,
97    <ol>
98     <li> <b>gauss</b> - Gaussian</li>
99     <li> <b>flat5</b> - flat distribution in the first of variables (dp over p) of a given dimension
100                         and Delta Dirac in the second one (T) </li>
101     <li> <b>flat56</b> - flat rectangular distribution </li>
102    </ol>
103
104   
105   </i>
106  <p> 
107  </dd>
108
109
110</dl>
111
112<h4>  </h4>
113
114
115<!-- ############################################################ -->
116<!-- ############################################################ -->
117<!-- ############################################################ -->
118<!--
119<h3> PROGRAMMERS MANUAL </h3>
120
121<p> 
122The command is implemented pro_ptc_SELECT function in madxn.c and
123by subroutine xxxx in madx_ptc_xxx.f90.
124<p>
125Sopecified range is resolved with help of get_range command. Number of the element in the current sequence
126is resolved and passed as the parameter to the fortran routine. It allows to resolve uniquely the corresponding
127element in the PTC layout.
128<p>
129
130-->
131
132</div>
133
134</body>
135
136</html>
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