The SuperChooz Experiment: Unveiling the Opportunity

<!--HTML--><div style="background-color:rgb(255, 255, 255);color:rgb(0, 0, 0);font-family:Helvetica;font-size:14.7px;font-stretch:normal;line-height:normal;margin:0px;text-align:justify;">A new Europe-based flagship neutrino experiment potential opens by exploiting a unique opportunity effectively hidden in the Chooz nuclear reactor site (France). The <i><strong>SuperChooz</strong></i> project’s birth is tied to the dismantling of the EDF Chooz-A&nbsp;nuclear reactor complex. Built around the 60s and unknown to most scientists, the Chooz-A site offers an underground volume of up to 50,000m<span style="font-size:8.1px;font-stretch:normal;line-height:normal;">³</span> available for neutrino fundamental science using the&nbsp;EDF Chooz-B two&nbsp;most powerful N4-EPR nuclear reactors located at about 1km away. The combination embodies the third generation of possible fundamental science at Chooz — Europe’s most renowned site for reactor neutrino research — while this time detectors may reach a scale comparable to the world's largest neutrino detector, such as the <i>SuperKamiokande</i> in Japan. The main experimental challenge is the site’s shallow overburden (~100m) demanding the use of the novel <i><strong>LiquidO</strong></i> technology (web: <a href="https://liquido.ijclab.in2p3.fr">https://liquido.ijclab.in2p3.fr</a>), originally pioneered around 2012 by the CNRS (France) and now led by the homonymous international consortium. The new detection methodology heralds the unprecedented active background rejection&nbsp;needed, including detection capabilities beyond reactor neutrinos only. Indeed, SuperChooz’s physics programme is designed to yield some of the world's most precise measurements that can additionally probe a few of the most insightful&nbsp;building-block symmetries of the <i>Standard Model</i> thus enabling unique discovery potential.&nbsp;SuperChooz programme also offers synergy potential allowing to boost the sensitivities of other&nbsp;world neutrinos flagship experiments, such as DUNE (US), JUNO (China) and HyperKamiokande (Japan).</div><div style="background-color:rgb(255, 255, 255);color:rgb(0, 0, 0);font-family:Helvetica;font-size:14.7px;font-stretch:normal;line-height:normal;margin:0px;min-height:17px;text-align:justify;"><br>&nbsp;</div><div style="background-color:rgb(255, 255, 255);color:rgb(0, 0, 0);font-family:Helvetica;font-size:14.7px;font-stretch:normal;line-height:normal;margin:0px;min-height:17px;text-align:justify;"><span style="font-size:14.7px;">The potential exploitation of the Chooz-A site for fundamental science is in active discussion between CNRS and EDF since 2018, upon the completion of the Double Chooz experiment, whose results grant vast data-based knowledge for the accurate design of SuperChooz. The neutrino reactor-based first physics studies were released at the </span><i><span style="font-size:14.7px;">EPS-HEP-2019 conference</span></i><span style="font-size:14.7px;"> (Ghent, Belgium). As of September 2022, CNRS and EDF signed the cooperation agreement officially starting the so-called&nbsp;</span><i><span style="font-size:14.7px;"><strong>SuperChooz Pathfinder</strong></span></i><span style="font-size:14.7px;"> era to address the project technical feasibility assessment by 2028.&nbsp;Moreover, the approved </span><i><span style="font-size:14.7px;"><strong>AntiMatter-OTech</strong></span></i><span style="font-size:14.7px;"> project,&nbsp;funded by the EU-EIC (France, Germany, Spain) and UKRI (UK), will address the&nbsp;specific LiquidO’s performance demonstration within the same time scale while establishing a new experiment in fundamental physics called </span><i><span style="font-size:14.7px;"><strong>νCLOUD</strong></span></i><span style="font-size:14.7px;"> at Chooz, including the direct participation of EDF in neutrino-based innovation for the first time. This seminar embodies the first release of the SuperChooz to the international community and will be followed by several publications.</span></div><p>&nbsp;</p><p><strong>REGISTRATION ONLY IF A VISITOR CARD IS NEEDED</strong></p>