Neutrino Oscillation Studies with KM3NeT/ORCA

<h1> Context and Subject </h1>

<p>

The Centre de Physique des Particules de Marseille (CPPM) in collaboration with the University of Toulon is opening a doctoral position (3 years), funded by the Aix Marseille University (AMU). The successful candidate will integrate CPPM to carry out research on neutrino oscillations with the ORCA detector and its possible upgrades.

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<p>

ORCA is a megaton scale natural water Cerenkov neutrino detector being constructed by the KM3NeT collaboration on the sea bed at 40 km offshore Toulon and at a depth of 2400 m. The primary purpose of the detector is to study neutrino oscillations using atmospheric neutrinos. While the detector construction should be over by 2027, the first detection units deployed since 2018 are fully operational, and the data collected have already allowed to observe the neutrino oscillations phenomena. The detector is now reaching a size that allows to probe unexplored physics territories. The Ph.D. student will participate in these data analyses, in particular, to the study of the appearance of tauic neutrinos in the atmospheric neutrino flux.

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In addition to the atmospheric neutrinos studies, the Ph.D. student will also participate in a team work to develop of a novel technique for accelerator-based experiments called neutrino tagging. The very large size of the natural water Cerenkov detectors such as ORCA (few megatons) allows to perform experiments with neutrino beams of modest intensity for which the beam line can be instrumented. These instruments allow to get first-hand information (energy, direction, flavour, chirality) on each of the produced neutrinos. Ongoing studies indicate that such experiments would offer an unprecedented precision on the leptonic CP violating phase. The Ph.D. will take part to this pioneering design phase of a tagged neutrino experiment (e.g. sensitivity estimate, tracker R&D etc...).

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<p>

The research activities will be conducted in tight collaboration with the Signal and Tracking group at University of Toulon, but also with the CERN Physics Beyond Colliders (PBC) study group (for the tagging part).

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<h1> Candidate Profile </h1>

We are seeking for a highly motivated person who would ideally have:

<ul>

<li> knowledge of experimental particle physics,</li>

<li> skills in applied statistics for data analysis,</li>

<li> experience in c/c++, ROOT, or python,</li>

<li> oral and written proficiency in English and French (optional).</li>

</ul>

<h1> Application Procedure </h1>

The student interested in applying for the internship must provide:

<ul>

<li> CV</li>

<li> Motivation letter</li>

<li> Grades from M1 and M2</li>

<li> Two reference letters or reference contacts</li>

</ul>

This information should be sent to <a href=mailto:mathieu.perrin-terrin@cern.ch; antoine.roueff@univ-tln.fr?subject=[PhD-2326-KM-04]>mathieu.perrin-terrin@cern.ch and antoine.roueff@univ-tln.fr</a> by July 31st.

<h1>References </h1>

<ul>

<li> https://www.cppm.in2p3.fr/web/fr/index.html</li>

<li> https://www.km3net.org/</li>

<li> Neutrino tagging: a new tool for accelerator based neutrino experiments, Perrin-Terrin, 2022 https://doi.org/10.1140/epjc/s10052-022-10397-8</li>

<li> First neutrino oscillation measurement in KM3NeT/ORCA https://doi.org/10.22323/1.395.1123</li>

<li> Comparison of Anodic and Au-Au Thermocompression Si-Wafer Bonding Methods for High-pressure Microcooling Devices https://doi.org/10.3390/mi14071297</li>

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