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<div class="moz-cite-prefix">Thanks Ruben! That is good news. It
provides more flexibility in how we deal with systematic effects
in future data taking. <br>
</div>
<div class="moz-cite-prefix">Volker</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">On 4/19/19 11:49 AM, Ruben Fair wrote:<br>
</div>
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<p style="margin-top:0;margin-bottom:0">All,</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">The Torus (+3770 A) and
Solenoid (+2416 A) simultaneous run was successful.</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">Both magnets are now
down at zero amps and PSUs are locked out.</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">No further magnet
energization runs have been planned for the immediate future.</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">Regards</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">Ruben</p>
<br>
<br>
<div style="color: rgb(0, 0, 0);">
<hr tabindex="-1" style="display:inline-block;width:98%">
<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
face="Calibri, sans-serif" color="#000000"><b>From:</b>
Ruben Fair<br>
<b>Sent:</b> Thursday, April 18, 2019 7:04 PM<br>
<b>To:</b> Volker Burkert; Bob Miller; Denny Insley<br>
<b>Cc:</b> Probir Ghoshal; Nicholas Sandoval; David Kashy<br>
<b>Subject:</b> Hall B - Torus and Solenoid - Runs with
different polarities 04.18.2019</font>
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<p style="margin-top:0; margin-bottom:0">Good evening all,</p>
<p style="margin-top:0; margin-bottom:0"><br>
</p>
<p style="margin-top:0; margin-bottom:0">Here is a summary
of our tests today:</p>
<p style="margin-top:0; margin-bottom:0"><br>
</p>
<ol style="margin-top:0px; margin-bottom:0px">
<li>
<div style="margin-top:0; margin-bottom:0">Torus +3770
A, Solenoid +2416 A - OK</div>
</li>
<li>
<div style="margin-top:0; margin-bottom:0">Torus +3770
A, Solenoid -2416 A - OK</div>
</li>
<li>
<div style="margin-top:0; margin-bottom:0">Torus -3770
A, Solenoid -2416 A - OK</div>
</li>
<li>
<div style="margin-top:0; margin-bottom:0">Torus -3770
A, Solenoid +2416 A - this was actually already done
in Dec 2018 (the magnets stayed in this
configuration from 12/12/18 to 12/19/18)</div>
</li>
</ol>
<p style="margin-top:0; margin-bottom:0"><br>
</p>
<p style="margin-top:0; margin-bottom:0">The load cell
readings for both magnets changed only marginally for
Cases 2 and 3, when compared to the values observed for
Case 1.<br>
</p>
<p style="margin-top:0; margin-bottom:0"><br>
</p>
<p style="margin-top:0; margin-bottom:0">The relevant log
entries are:</p>
<p style="margin-top:0; margin-bottom:0"><br>
</p>
<ol style="margin-top:0px; margin-bottom:0px">
<li>
<div style="margin-top:0; margin-bottom:0"><a
class="x_OWAAutoLink" id="LPlnk619156"
href="https://logbooks.jlab.org/entry/3679560"
previewremoved="true" moz-do-not-send="true">https://logbooks.jlab.org/entry/3679560</a></div>
</li>
<li>
<div style="margin-top:0; margin-bottom:0"><a
class="x_OWAAutoLink" id="LPlnk646470"
href="https://logbooks.jlab.org/entry/3679643"
previewremoved="true" moz-do-not-send="true">https://logbooks.jlab.org/entry/3679643</a></div>
</li>
<li>
<div style="margin-top:0; margin-bottom:0"><a
class="x_OWAAutoLink" id="LPlnk143053"
href="https://logbooks.jlab.org/entry/3679665"
previewremoved="true" moz-do-not-send="true">https://logbooks.jlab.org/entry/3679665</a></div>
</li>
</ol>
<div style="margin-top:0; margin-bottom:0"><br>
</div>
<div style="margin-top:0; margin-bottom:0">Denny,</div>
<div style="margin-top:0; margin-bottom:0"><br>
</div>
<div style="margin-top:0; margin-bottom:0">Both magnets
are now at zero Amps. We shall lock out the PSUs and
turn off the beacons, so Todd and Calvin can use the
crane tomorrow at 06:30am as planned.</div>
<div style="margin-top:0; margin-bottom:0"><br>
</div>
<div style="margin-top:0; margin-bottom:0">
<p style="">Tomorrow morning at 8am we shall do one
final run at:</p>
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<p style=""><br>
</p>
<span style="display:inline!important; float:none;
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font-family:Calibri,Helvetica,sans-serif,"EmojiFont","Apple
Color Emoji","Segoe UI
Emoji",NotoColorEmoji,"Segoe UI
Symbol","Android Emoji",EmojiSymbols;
font-size:16px; font-style:normal;
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letter-spacing:normal; orphans:2; text-align:left;
text-decoration:none; text-indent:0px;
text-transform:none; white-space:normal;
word-spacing:0px"></span>
<p style="">Torus +3770 A, Solenoid +2416 A to ensure
that nothing has changed.<br>
</p>
</div>
<div style="margin-top:0; margin-bottom:0"><br>
</div>
<div style="margin-top:0; margin-bottom:0"><br>
</div>
<div style="margin-top:0; margin-bottom:0">Regards</div>
<div style="margin-top:0; margin-bottom:0"><br>
</div>
<div style="margin-top:0; margin-bottom:0">Ruben</div>
<p style="margin-top:0; margin-bottom:0"><br>
</p>
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