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Expand Up @@ -765,15 +765,15 @@ <h1>Collaborations Between Two National Laboratories and the OSG Consortium Prop
<img style="width:100%" src="https://raw.githubusercontent.com/CHTC/Articles/main/images/epic-eic-collab.jpg" alt=" Electron Beam Ion Source / Brookhaven National Laboratory" />
<figcaption>Electron Beam Ion Source / Brookhaven National Laboratory</figcaption>
</figure>
<p><br /><br />Seeking to unlock the secrets of the glue” binding visible matter in the universe, the <a href="https://www.bnl.gov/eic/epic.php">ePIC Collaboration</a> stands at the forefront of innovation. Led by a collective of hundreds of scientists and engineers, the Electron-Proton/Ion Collider (ePIC) Collaboration was formed to design, build, and operate the first experiment at the <a href="https://www.bnl.gov/eic/">Electron-Ion Collider</a> (EIC). This experiment aims to construct the world’s most advanced particle detector, capable of analyzing collisions between electrons and protons or other atomic nuclei.</p>
<p><br /><br />Seeking to unlock the secrets of the glue” binding visible matter in the universe, the <a href="https://www.bnl.gov/eic/epic.php">ePIC Collaboration</a> stands at the forefront of innovation. Led by a collective of hundreds of scientists and engineers, the Electron-Proton/Ion Collider (ePIC) Collaboration was formed to design, build, and operate the first experiment at the <a href="https://www.bnl.gov/eic/">Electron-Ion Collider</a> (EIC). This experiment aims to construct the world’s most advanced particle detector, capable of analyzing collisions between electrons and protons or other atomic nuclei.</p>

<p>“They are building a detector that can slide seamlessly into EIC’s infrastructure. When these collisions occur, they will capture a wealth of physics data that advances our understanding of high-energy nuclear interactions. The outcomes of these collisions allow us to explore new frontiers in physics” reports Pascal Paschos, the OSG Consortium Facilitator who supports the work of ePIC. Paschos oversees the collaborations’ access to computational capacity necessary to conduct these experiments.</p>

<p>The EIC, developed by the collaboration between <a href="https://www.bnl.gov/about/">Brookhaven National Lab</a> (BNL) and <a href="https://www.jlab.org/">Jefferson Lab</a> (JLab), will be the world’s first electron-nucleus collider of its kind. It features two intersecting accelerators—one generating a powerful polarized electron beam and the other a high-energy beam of polarized protons or heavier atomic nuclei. However, ePIC faces the challenge of validating the detector design for integration with the EIC. Paschos explains, “To validate the detector design, throughput capacity is required to model and experimentally simulate the detector. The goal is to evaluate how the detector would respond to signals generated from theoretical collisions included in their parameter files.”</p>

<p>“This project isn’t new,” adds <a href="http://wouterdeconinck.com/">Dr. Wouter Deconinck</a>, associate professor at the University of Manitoba and Deputy Software and Computing Coordinator (SCC) for Operations at ePIC. “Concepts for an electron-ion collider have been in development for 20 or 30 years, aiming to include a polarized ion beam.” Drawing on his experience at the <a href="https://en.wikipedia.org/wiki/HERA_(particle_accelerator)">HERA</a> electron-proton collider and post-graduate work in electron polarimetry, Deconinck, alongside BNL postdoctoral fellow <a href="https://www.bnl.gov/staff/srahman1">Sakib Rahman</a>, explains, “Since 2008, we’ve been evaluating the computing and software stacks needed for an electron-ion collider. Planning for operation into the 2030s necessitates future-proof and modular development to incorporate emerging technologies.”</p>

<p>Achieving a unified system is one important goal for the project. ePIC requires an infrastructure capable of simulating and gathering essential data for their design. One option was the <a href="https://osg-htc.org/services/open_science_pool.html">OSPool</a>, a shared computing capacity available to researchers affiliated with US academic institutions. Deconinck and Rahman considered other computing infrastructures for these simulation jobs. Deconinck notes, “We evaluated the OSPool and compared it with the EIC pool of resources available at JLab, BNL and the <a href="https://alliancecan.ca/en">Digital Research Alliance of Canada</a> (the Alliance.) Both pools were capable of handling about 2,000 jobs at a time.” Ultimately selecting the OSPool, Deconinck notes,“We saw it as a way to convince JLab to allocate jobs to the OSPool indirectly, transferring jobs to the Alliance, and continuing to submit to the OSPool. The primary advantage was achieving a unified interface across all these sites.”</p>
<p>Achieving a unified system is one important goal for the project. ePIC requires an infrastructure capable of simulating and gathering essential data for their design. One option was the <a href="https://osg-htc.org/services/open_science_pool.html">OSPool</a>, a shared computing capacity available to researchers affiliated with US academic institutions. Deconinck and Rahman considered other computing infrastructures for these simulation jobs. Deconinck notes, “We evaluated the OSPool and compared it with the EIC pool of resources available at JLab, BNL and the <a href="https://alliancecan.ca/en">Digital Research Alliance of Canada</a> (the Alliance.) Both pools were capable of handling about 2000 jobs at a time.” Ultimately selecting the OSPool, Deconinck notes,“We saw it as a way to convince JLab to allocate jobs to the OSPool indirectly, transferring jobs to the Alliance, and continuing to submit to the OSPool. The primary advantage was achieving a unified interface across all these sites.”</p>

<p>Rahman also emphasizes OSPool’s role in the integrated system, stating, “Previously, someone had to create accounts on every site to submit jobs. Now, running production campaigns, others need an account on one <a href="https://path-cc.io/about/">PATh</a> operated Access Point, with their work credited to ePIC. This detachment from individual operators and alignment with the project as a whole significantly reduces onboarding time.”</p>

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