Missions

The Neutrino Group at LPNHE invites applications for a postdoctoral research position. The successful candidate will contribute to the group's activities on the Hyper-Kamiokande experiment.
About Hyper-Kamiokande
Hyper-Kamiokande is a long-baseline neutrino oscillation experiment under construction in Japan, with data taking expected to begin in 2027. This experiment aims to place strong constraints on CP symmetry violation in the lepton sector and to produce precise measurements of oscillation parameters. The Hyper-Kamiokande program is very rich, covering other topics in particle physics such as proton decay and the search for sterile neutrinos, as well as multi-messenger astrophysics with the detection of supernova explosions.
A new far detector with a larger fiducial volume than the Super-Kamiokande detector is under construction to increase the number of detected neutrinos. This new detector will have its detection electronics underwater, close to the photomultiplier tubes (PMTs). All signals from the 20,000 PMTs will need to be synchronized within the detector for the reconstruction of Cherenkov rings, but also with astrophysics experiments around the world thanks to GPS signals. The LPNHE is in charge of the production of such a system.
The LPNHE group is involved in the detector's data reconstruction, in particular the adaptation of the reconstruction software for atmospheric and beam neutrinos, as well as in oscillation analyses.
Travel expenses to Japan (in particular for collaboration meetings and on-site tests) and participation in international conferences are covered by the project budget. To be considered, applications must be submitted before March 21th. The contract is expected to start on May 1st, 2025, but a later date can be considered.

Activités

The successful candidate will work on the time generation and clock distribution system for the Hyper-Kamiokande far detector and associated physics studies (time of flight, multi-messenger astrophysics), in order to prepare for the installation and data taking by the new far detector. A contribution to the reconstruction in the far detector is also expected.
In addition, the candidate may contribute to the T2K experiment through shifts at the ND280 near detector and the analysis of existing data in view of future analyses with the HK experiment.
The postdoctoral contract is funded by the ANR for two years. The contract is expected to start on May 1st, 2025, but a later date can be considered.

Compétences

The candidate must have a doctoral degree (or equivalent) in particle physics or astrophysics. Good knowledge of programming (C++, ROOT, Python) is required. Knowledge of temporal signal processing and an experimental background and data analysis skills are desired.
Applications should include a CV with a summary of previous research activities and a statement of interest. Up to three reference letters should be sent to Mathieu Guigue (Mathieu.guigue@lpnhe.in2p3.fr) and Claudio Giganti (Claudio.giganti@lpnhe.in2p3.fr)
For further information, contact Claudio Giganti and Mathieu Guigue.

Contexte de travail

LPNHE (Laboratoire de Physique Nucléaire et des Hautes Energies, https://lpnhe.in2p3.fr/) is a laboratory of the IN2P3 (Institut National de Physique Nucléaire et de Physique de Particules), a CNRS institute, and of the universities « Sorbonne Université » and « Université de Paris ». The laboratory is located in Paris (France). It is involved in major particle physics, astroparticle physics and cosmology international collaborations. 130 permanent agents work at LPNHE.

The Neutrino group at LPNHE is currently involved in the analysis of the T2K data, in the upgrade of the T2K Near Detector and in the preparation for the next generation of long-baseline experiment, Hyper-Kamiokande. The T2K group is composed of 4 permanent researchers: four CNRS researchers (J. Dumarchez, C. Giganti, B. Popov, M. Zito), an assistant professor (M. Guigue), two postdoctoral researchers and six PhD students.

Contraintes et risques

No specific risks are foreseen for this position.

Informations complémentaires

The position is funded by ANR for two years. The starting date is May 1st , 2025