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</style><article id="node-782093" class="node node-logentry contextual-links-region article ia-n clearfix" role="article"><header class="node-header"><h1 class="node-title">
<a href="https://logbooks.jlab.org/entry/3709155" rel="bookmark">T-Gun: RF Issues</a>
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</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/3709155/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/3709155/delete?destination=email/send">Delete</a></li></ul></div>
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<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/3709155" class="lognumber" data-lognumber="3709155">3709155</a>. Submitted by <a href="https://logbooks.jlab.org/user/mstefani">mstefani</a> on <time datetime="2019-07-24T14:31:27-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1563989487&end_date=1563996687&book=GTSLOG">Wed, 07/24/2019 - 14:31</a></time>. </p>
<p class="last-update">
Last updated on <time datetime="2019-07-24T14:32:16-0400" pubdate="pubdate">Wed, 07/24/2019 - 14:32</time></p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/gtslog">GTSLOG</a></td></tr><tr><th>Entry Makers: </th><td>mstefani</td></tr></table></div>
<div class="logentry node-content">
<p>Today was intended to troubleshoot RF for the T-gun. </p>
<p>There is a problem with the RF Power/Voltage produced. Output saturates at 2.3 dBm which equates to ~710 mV peak to peak. This value was measured directly from the SMA that would connect to the RF transmission line without any attenuators. </p>
<p>The output saturation value does not change if macro pulsing voltage is increased from 5-10 V. However, the saturation takes place at a lower input power from the RF generator.</p>
<p>I will create a powerpoint with pictures of the entire system to show how it operates. Then maybe someone can help pinpoint the problem. Obvious guess would be an issue with one of the amplifiers but this may be an overly simplistic view.</p>
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