The KM3NeT Collaboration is constructing a neutrino telescope in the Mediterranean Sea. Arrays of light-sensitive elements record the Cherenkov light produced by fast travelling charged particles in the sea water that could originate from interactions of neutrinos. The energy and direction of the original neutrinos can be reconstructed from the amount of Cherenkov photons and their time-of-arrival in the detectors. The densely-instrumented KM3NeT/ORCA building block will be used for the measurement of neutrino oscillations, whereas the sparsely-instrumented KM3NeT/ARCA block will measure cosmic neutrinos and be used for the search for their sources.

The KM3NeT group at Nikhef has an opening for a PhD student. The successful candidate will work on the search for cosmic neutrino sources, refining existing reconstruction and selection procedures and connect with available multi-messenger information. The candidate is also expected to contribute to the detector calibration and help in the construction of further detector elements at Nikhef.