<html><head><title>New right septum field map (40-00-16 turns of coils)</title></head><body>
<p>Link: <a href="http://hallaweb.jlab.org/halog/log/html/1204_archive/120412023302.html">http://hallaweb.jlab.org/halog/log/html/1204_archive/120412023302.html</a></p>
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<a name="372992"><h4>User name Jixie Zhang</h4></a>
<h4>Log entry time 02:33:02 on April 12, 2012</h4>
<!-- Actual time: Thu Apr 12 02:33:02 EDT 2012 on hallaweb.jlab.org from 129.57.81.43, version HAweb1.20 -->
<h4>Entry number 372992 </h4>
keyword=New right septum field map (40-00-16 turns of coils)<br>
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<p>Attached is the field for 40-00-16 turns of right septum, plotted on top
of the left. It is plot with the tosca map which has 800A in the left
and 895A in the right (these 2 current match well for 40-32-16 turns of
right septum). One can see that after removing additional 4 wires from
the 2nd coil in the top, the field in the right change shape a lot.</p>
<p>For the right septum, the field at the top is now ~10% lower than that at
the bottom. That is, the field in the vertical edges(y=+/-9.5cm) are
+/-5% away from that at the center(y=0).</p>
<p>For the left septum, the field at the top is now ~1.4% lower than that at
the bottom. The field at the bottom (y=-9.5cm) is +3.5% larger than that
at the center(y=0), while the field at the top is only 2% larger.</p>
<p>We have already seen acceptance lose in the right HRS due to t
</p><br>
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A copy of this log entry has been emailed to: g2p_ana@jlab.org<br>
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<P><BIG>Figure 1</BIG></P>
<img src="http://hallaweb.jlab.org/halog/log/html/1204_archive/120412023302.1.png"><br>
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