Job offer

European Commission; France; Sur place; EUR 30 000 - 35 000; Plein temps

Résumé du poste

Un laboratoire de recherche en astrophysique recherche un postdoctorant pour travailler sur la caractérisation des détecteurs à inductance cinétique. Le candidat sera responsable des bancs de test cryogéniques et devra maîtriser l'utilisation de Python pour analyser les résultats. Ce poste offre l'opportunité de contribuer à des projets de pointe sur des instruments de détection à la prochaine génération.

Qualifications

• Maîtrise des procédures de test des détecteurs.
• Expérience souhaitée en caractère cryogénique.
• Capacité à écrire des rapports de test en anglais.

Responsabilités

• Installer des détecteurs dans le cryostat.
• Effectuer des mesures cryogéniques et des tests.
• Analyser les résultats et rédiger des rapports.

Connaissances

Python

Caractérisation des détecteurs

Formation

Doctorat en Physique

Description du poste

Organisation/Company CNRS Department Astroparticule et Cosmologie Research Field Physics Researcher Profile First Stage Researcher (R1) Country France Application Deadline 2 Jul 2025 - 23:59 (UTC) Type of Contract Temporary Job Status Full-time Hours Per Week 35 Offer Starting Date 1 Jan 2026 Is the job funded through the EU Research Framework Programme? Not funded by a EU programme Is the Job related to staff position within a Research Infrastructure? No

Offer Description

The APC laboratory is looking for a postdoctoral student to work on the characterisation of kinetic inductance detectors (MKIDs) operating in the near and visible infrared. He/she will be in charge of the various cryogenic test benches (100mK) available at APC and GEPI in order to determine the performance of the detectors (efficiency, response, sensitivity, response time). He/she will also participate in the development of the SPIAKID instrument currently being characterised at APC.

The activities will cover all the tasks required to characterise the samples:
- Installation of detectors in the cryostat
- Refrigeration
- Cryogenic measurements of resonances at different temperatures to determine the efficiency and response of the detectors
- Measurements with laser pulses to determine response time and sensitivity
- Analysis of results using Python and drafting of test reports
- Maintenance of characterisation equipment
- Publication of results in peer-reviewed scientific journals.

The AstroParticle and Cosmology Laboratory (APC) is a Joint Research Unit (UMR) that brings together around 75 permanent researchers and around fifty engineers, technicians and administrative staff. Including non-permanent staff (PhD students, post-doctoral fellows, foreign visitors), there are some 200 people in this structure, which is run by the Université Paris Cité (UPC), the CNRS (represented by three of its institutes: mainly IN2P3, but also INSU and INP), the CEA (DSM/IRFU) and the Observatoire de Paris, and the CNES.
The technology of superconducting detectors of the KIDs (Kinetic Inductance Detectors) type is particularly promising for the next generation of observational instruments in Astrophysics. In the near infrared and visible wavelengths, this detection technique enables spectro-imaging of very faint sources, such as distant galaxies. KID technology is also fast, has extremely low noise, is simple to manufacture and has the advantage of being easy to implement in large detector arrays.
With this in mind, the millimetre instrument team in the APC's Cosmology group, in collaboration with GEPI at the Paris Observatory, is developing and characterising arrays of superconducting detectors of the KIDs type. The ultimate aim of this research is to produce large detector arrays (several thousand) for the SPIAKID instrument project being developed at GEPI for observations in the visible and near infrared.

- Mastery and rigour of detector test procedures
- Characterisation of state-of-the-art detectors
- Development of programmes in Python
- Writing test reports in English
- Knowledge of superconductivity and characterisation at cryogenic temperatures would be a plus.