<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
<!--
html{color:#555555;}body{line-height:1.5;font-family:'Trebuchet MS','Helvetica Neue',Arial,Helvetica,sans-serif;font-size:87.5%;}h1{font-size:1.6em;}h2.field-label{display:inline-block;font-size:1em;padding-right:5px;min-width:10em;margin:0.3em;}.problem_report{line-height:1.5;max-width:60em;}fieldset.problem_report.resolved
legend{background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAy0lEQVQ4jWP8//8/AyWAiZACd3f3/xYWFrht+f//P1a84t3e/0obff4rbfT5D1GGXR0LuoEr3+/7X3W4n2gvwA0gVSOKAcqbfPGGpImJCU45JgYGBoa7fpsZ22wLSbadgYGBgRE9GrF55Vf2BYbHjx8zYjWB0ljAcAGGExkZ/0MtwuoCggmJEBh4AzBS4pMnT/7fuXOH4dKlSwwnT56EiwcGBv43MDBgMDExYdDX12eQkZGBhAlyiC5YsOA/AwMDUXjLli3/iYoFQgAA+pSxZrXofD0AAAAASUVORK5CYII=);background-repeat:no-repeat;padding-left:18px;}fieldset.problem_report.needs_attention
legend{background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAA9ElEQVR42sWTvUoDQRSFv9wMKWxSBVmzdhZJIwTWv9pyLWxTpbE1kBeJPoLxBazzBgGFKNqlHXAhsITUw1y7sMpmjER0YJrDPWcO556BPzhjYPJjlhfT82LUpxcK6Lo5U0JMgcu56tXy7BQajeBDpkAcAEdz1W6uyrLdYieK2DMmKCArcqczpH/ddc0msy+OkyQJC4h3N0ynx+Q5ALtUNs5q5U+8e+R+VPFi4kjk3NZqd++qUK+TZVnYwSfAOyvejeLXt/2qVG/dYoG1dqseBNco27bs/wXKWhIDB8AhcFLAH4Bn4Al4AUqT7RVC++6mv/JVPwDi3VGzomYvyAAAAABJRU5ErkJggg==);background-repeat:no-repeat;padding-left:18px;}.problem_report div.field-items{display:inline-block;}div.date-vitals p{font-size:87.5%;}a{text-decoration:none;}.Readme a:link,.Readme a:visited,.Readme
a:active{color:red;}
-->
</style>
</head>
<body id="mimemail-body" class="elog-logentry-notify">
<div id="center">
<div id="main">
<style>
<!--/*--><![CDATA[/* ><!--*/
div.field-vitals{
margin: 0.5em 0;
}
div.field-vitals .field-type-taxonomy-term-reference {
margin: 0.1em 0;
}
article.comment {
padding-left: 10px;
}
article.comment.odd {
background-color: #EEEEEE;
}
article.comment.even {
background-color: #DDDDDD;
}
div.node-content.logentry table{
width: auto;
border-collapse: collapse;
border-spacing: 0;
border-width: 1px;
}
div.node-content.logentry th{
border: inherit;
}
div.node-content.logentry blockquote{
background-color: #FFFFFF;
}
div.node-content.logentry caption{
font-size: 1em;
font-weight: normal;
}
table.field-vitals{
margin-top: 1em;
margin-bottom: 1em;
font-size: 87.5%;
}
table.field-vitals th{
vertical-align: middle;
text-align: left;
width: 15%;
padding: 0.1em;
}
table.field-vitals td{
vertical-align: middle;
text-align: left;
width: auto;
padding: 0.1em;
}
table.field-vitals td li {
margin-left: 0;
list-style-type: none;
list-style-image: none;
}
table.downtime {
width: 30em;
margin-bottom: 1em;
border: 1px black dotted;
}
table.downtime th {
text-align: center;
}
table.downtime td {
text-align: center;
}
tr.caption th {
border-bottom: none;
}
table.downtime tfoot{
background-color:#EEEEEE;
}
div.field-name-body{
margin: 1em 0;
font-size: 110%;
}
div.date-vitals p{
margin: .1em 0;
}
article div.ctools-collapsible-container{
margin-left: -5px;
clear: both;
}
#comment-form{
margin-left: 5px;
border: graytext outset medium;
-moz-border-radius: 15px;
border-radius: 15px;
padding: 1em;
}
div.comments-form-box {
margin-top: 2em;
margin-bottom: 5em;
}
h3.comment-title {
/* display: none; */
}
p.author-datetime{
font-weight: bold;
}
/*--><!]]>*/
</style><article id="node-484190" class="node node-logentry article ia-n clearfix" role="article"><header class="node-header"><h1 class="node-title">
<a href="https://logbooks.jlab.org/entry/3411357" rel="bookmark">Correlations between different triggers</a>
</h1>
</header><div class="date-vitals">
<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/3411357" class="lognumber" data-lognumber="3411357">3411357</a>. Submitted by <a href="https://logbooks.jlab.org/user/somov">somov</a> on <time datetime="2016-06-21T11:14:43-0400" pubdate="pubdate">Tue, 06/21/2016 - 11:14</time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hdlog">HDLOG</a> <a href="https://logbooks.jlab.org/book/hdtrigger">HDTRIGGER</a></td></tr><tr><th>Entry Makers: </th><td>somov</td></tr></table></div>
<div class="logentry node-content">
<p>I started looking on correlations between different trigger types. As an example, reconstructed<br />
rho meson candidates were considered</p>
<p>Event selection:</p>
<p>- select 3-track final state</p>
<p>- use dEdx to identify proton</p>
<p>- match tracks with clusters in calorimeter;<br />
require no energy in the calorimeter<br />
except those released by tracks</p>
<p>Triggers considered:</p>
<p>bit 1: 10 FCAL + 2 BCAL > 18000</p>
<p>bit 6: 20 FCAL + 1 FCAL > 36000</p>
<p>bit 7: ST + FCAL (900) Prescaled factor 2</p>
<p>---------------------------------------------<br />
Runs 11554, 11555</p>
<p>1) Efficiency for different BCAL energies</p>
<p> N (bit 6) / N (bit 1) = 93 % </p>
<p>2) Compare ST + FCAL and the production trigger </p>
<p> N (bit 7) / N (bit 1) = 94 %</p>
<p>3) Trigger correlations</p>
<p> a. Trigger with ST & FCAL, check FCAL & BCAL trigger </p>
<p> N (bit 7) / N (bits 7 & 1) = 97 %</p>
<p> b. Trigger with FCAL & BCAL, check ST & FCAL</p>
<p> N (bit 1) / N (bits 1 & 7) = 92 %</p>
<p> - ST efficiency is not taken into account</p>
<p> - timing has not been fine-tuned</p>
<p>Plots:<br />
-----</p>
<p>Fig 1 </p>
<p>Top Left: invariant mass distribution for pi+ pi- candidates<br />
acquired with the production (bit 1) and complementary<br />
trigger (bit 6).</p>
<p>Top Right: ratio of events acquired with these triggers<br />
as a function of the reconstructed beam energy<br />
(E (REC) - mp) </p>
<p>Bottom plots: comparison of the FCAL & BCAL and<br />
ST & FCAL triggers</p>
<p>Fig 2.</p>
<p>Ratio of events acquired with the trigger (bit 7 & bit 1)<br />
and the production trigger (bit 1) as function of the<br />
reconstructed beam energy</p>
</div>
<div class="attachment-box">
<div class="image-wrapper"><img class="image-style-plentybig" src="cid:da91268bbf2085715b357c50b86c6932@logbooks.jlab.org" width="698" height="474" alt="" title="Fig. 1 see descriptions in the text" /></div> <div class="image-wrapper"><img class="image-style-plentybig" src="cid:3424b32bd5e6fe26d042125f9d6d56df@logbooks.jlab.org" width="698" height="474" alt="" title="Fig 2. " /></div> </div>
</article> </div>
</div>
</body>
</html>