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<p style="margin-top:0;margin-bottom:0">All,</p>
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<p style="margin-top:0;margin-bottom:0">The Torus (+3770 A) and Solenoid (+2416 A) simultaneous run was successful.</p>
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<p style="margin-top:0;margin-bottom:0">Both magnets are now down at zero amps and PSUs are locked out.</p>
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<p style="margin-top:0;margin-bottom:0">No further magnet energization runs have been planned for the immediate future.</p>
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<p style="margin-top:0;margin-bottom:0">Regards</p>
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<p style="margin-top:0;margin-bottom:0">Ruben</p>
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<div id="divRplyFwdMsg" dir="ltr"><font color="#000000" face="Calibri, sans-serif" style="font-size:11pt"><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>
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<p style="margin-top:0; margin-bottom:0">Here is a summary of our tests today:</p>
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<div style="margin-top:0; margin-bottom:0">Torus +3770 A, Solenoid +2416 A - OK</div>
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<div style="margin-top:0; margin-bottom:0">Torus +3770 A, Solenoid -2416 A - OK</div>
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<div style="margin-top:0; margin-bottom:0">Torus -3770 A, Solenoid -2416 A - OK</div>
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<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>
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<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>
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<p style="margin-top:0; margin-bottom:0">The relevant log entries are:</p>
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<div style="margin-top:0; margin-bottom:0"><a class="x_OWAAutoLink" id="LPlnk619156" href="https://logbooks.jlab.org/entry/3679560" previewremoved="true">https://logbooks.jlab.org/entry/3679560</a></div>
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<div style="margin-top:0; margin-bottom:0"><a class="x_OWAAutoLink" id="LPlnk646470" href="https://logbooks.jlab.org/entry/3679643" previewremoved="true">https://logbooks.jlab.org/entry/3679643</a></div>
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<div style="margin-top:0; margin-bottom:0"><a class="x_OWAAutoLink" id="LPlnk143053" href="https://logbooks.jlab.org/entry/3679665" previewremoved="true">https://logbooks.jlab.org/entry/3679665</a></div>
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<div style="margin-top:0; margin-bottom:0">Denny,</div>
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<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>
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<p style="">Tomorrow morning at 8am we shall do one final run at:</p>
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<p style="">Torus +3770 A, Solenoid +2416 A to ensure that nothing has changed.<br>
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<div style="margin-top:0; margin-bottom:0">Regards</div>
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<div style="margin-top:0; margin-bottom:0">Ruben</div>
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