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<b><span style="font-size:48.0pt">Physics Seminar<o:p></o:p></span></b></p>
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<p class="MsoNormal" align="center" style="text-align:center"><span class="value"><b><span style="font-size:22.0pt">Scott Barcus<o:p></o:p></span></b></span></p>
<p class="MsoNormal" align="center" style="text-align:center"><span class="value"><span style="font-size:22.0pt"><o:p> </o:p></span></span></p>
<p class="MsoNormal" align="center" style="text-align:center"><span class="value"><b><span style="font-size:22.0pt">Jefferson Laboratory<o:p></o:p></span></b></span></p>
<p class="MsoNormal" align="center" style="text-align:center"><o:p> </o:p></p>
<p class="MsoNormal" align="center" style="text-align:center"><i><span style="font-size:22.0pt">The Form Factor Frontier: Nailing Down Nuclear Structure<o:p></o:p></span></i></p>
<p class="MsoNormal" align="center" style="text-align:center"><b><i><span style="font-size:22.0pt"><o:p> </o:p></span></i></b></p>
<p class="MsoNormal" align="center" style="text-align:center"><b><i><span style="font-size:22.0pt">Abstract</span></i></b><i><span style="font-size:22.0pt">:</span></i><i><span style="font-size:22.0pt"><o:p></o:p></span></i></p>
<p class="MsoNormal"><span style="font-size:14.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif">Electromagnetic form factors describe the spatial distribution of charge in nuclei and nucleons making them fundamental to understanding internal nuclear structure. New
<sup>3</sup>He and <sup>3</sup>H form factors extracted from global cross section fits of modern data will be discussed. Shifts in the
<sup>3</sup>He magnetic form factor and conflicts between theory and experiment motivate new measurements. Hall C experiment, E12-06-121A, will use a double polarization asymmetry technique to measure the
<sup>3</sup>He form factors. This first ever high Q<sup>2</sup> measurement of the
<sup>3</sup>He form factors with polarization observables offers many advantages over Rosenbluth separation techniques.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif">In the 12 GeV era JLab is uniquely situated to make new and increasingly precise form factor measurements. The Super BigBite Spectrometer program in Hall A will explore
the nucleon form factors in the G<sub>M</sub><sup>n</sup>, G<sub>E</sub><sup>n</sup> , and G<sub>E</sub><sup>p</sup><sub>
</sub>experiments. An overview of these experiments and their scientific importance will be given. Integral to these experiments is the Hadron Calorimeter (HCal) which will detect scattered protons and neutrons. HCal’s design and preliminary commissioning results
will be presented.<o:p></o:p></span></p>
<p class="MsoNormal" align="center" style="text-align:center"><b><span style="font-size:18.0pt"><o:p> </o:p></span></b></p>
<p class="MsoNormal" align="center" style="text-align:center"><b><span style="font-size:18.0pt">Tuesday, December 17, 2019<o:p></o:p></span></b></p>
<p class="MsoNormal" align="center" style="text-align:center"><b><span style="font-size:18.0pt">2:00 pm<o:p></o:p></span></b></p>
<p class="MsoNormal" align="center" style="text-align:center"><b><span style="font-size:18.0pt">CEBAF Center L102<o:p></o:p></span></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Stephanie Tysor<o:p></o:p></p>
<p class="MsoNormal">Thomas Jefferson National Accelerator Facility<o:p></o:p></p>
<p class="MsoNormal">Physics Division<o:p></o:p></p>
<p class="MsoNormal">Hall A & C Administrative Assistant<br>
(office)<a href="callto:757-269-6005"><span style="color:blue">757-269-6005</span></a> (fax)<a href="callto:757-269-5235"><span style="color:blue">757-269-5235</span></a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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