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Dear Ce+BAF colleagues,</div>
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Tomorrow's accelerator division seminar overlays our weekly team meeting (unlucky!). However, the topic is the FCC-ee electron-positron collider which is broadly interesting (lucky!), especially if you'd like to learn more about it. The Great Law of Averages.</div>
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So, you are all invited to join the seminar (details below) and we'll resume our normal weekly meeting next Wednesday 2/18 at 11am. The speaker will be Volker Ziemann.</div>
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-Joe</div>
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<span style="font-weight: 700;">Accelerator Seminar - Leon Van Riesen-Haupt</span></div>
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<span style="font-weight: 700;">Time:</span><br>
11:00am</div>
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<span style="font-weight: 700;">Location:</span><br>
Test Lab rm. 1227 & Zoom</div>
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<span style="font-weight: 700;">Contact:</span><br>
Hui Tan (<span style="color: rgb(172, 23, 43);"><u><a style="color: rgb(172, 23, 43);" class="OWAAutoLink" id="OWA6a75168d-8457-10af-952b-2bc14137f91a" href="mailto:huit02@jlab.org">huit02@jlab.org</a></u></span>)</div>
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<span style="font-weight: 700;">Phone:</span><br>
(757) 269-7100</div>
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<span style="font-weight: 700;">Description:</span><br>
On Wednesday, Feb. 11, at 11 a.m., Leon Van Riesen-Haupt of Old Dominion University will present "Simulating and Optimization Challenges for the FCC-ee" in Test Lab rm. 1227 and via Zoom.<br>
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Abstract: The Future Circular Collider (FCC-ee) is a proposed high-luminosity electron-positron collider whose performance is strongly influenced by synchrotron radiation, magnetic imperfections, and interactions between colliding particle beams. Reaching its
ambitious physics goals requires accurate modeling of these effects and a clear understanding of how they collectively impact key performance quantities such as beam size, luminosity, and beam lifetime. In this talk, I present recent work using the Xsuite
simulation framework to model FCC-ee with increasing realism, combining radiation effects, magnet errors, and beam–beam interactions within a single, benchmarked environment. These simulations allow detailed performance studies and large parameter scans that
inform design choices and error tolerances. Because full lifetime simulations are computationally demanding, I also discuss the development of faster, quantitative indicators of beam stability tailored to radiation-dominated machines and assess how well they
correlate with true performance. Together, these studies help guide the optimization of FCC-ee and illustrate the challenges and opportunities in designing the next generation of high- performance particle colliders.<br>
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https://www,jlab.org/accelerator-seminars</div>
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<span style="font-weight: 700;">URL:</span><br>
<span style="color: rgb(172, 23, 43);"><u><a style="color: rgb(172, 23, 43);" class="OWAAutoLink" id="OWA3f6ab489-d214-0130-5ad1-1884b5ccc272" target="_blank" href="https://jlab-org.zoomgov.com/j/1610320271?pwd=MYVENAqcQFbIVTLNCD0ABao5dj0dYZ.1">https://jlab-org.zoomgov.com/j/1610320271?pwd=MYVENAqcQFbIVTLNCD0ABao5dj0dYZ.1</a></u></span></div>
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