Informations générales
Intitulé de l'offre : Post-doctorate position on the characterisation of kinetic inductance sensors for visible and infrared astronomy (M/F) (H/F)
Référence : UMR7164-KEVVEL-040
Nombre de Postes : 1
Lieu de travail : PARIS 13
Date de publication : mercredi 11 juin 2025
Type de contrat : Chercheur en contrat CDD
Durée du contrat : 4 mois
Date d'embauche prévue : 1 janvier 2026
Quotité de travail : Complet
Rémunération : 3081.33€ gross per month
Niveau d'études souhaité : Doctorat
Expérience souhaitée : Indifférent
Section(s) CN : 01 - Interactions, particules, noyaux du laboratoire au cosmos
Missions
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.
Activités
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.
Compétences
- 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.
Contexte de travail
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.
Contraintes et risques
The activities will take place at APC and GEPI in the cryogenic characterisation laboratories, where cryostats will be used. During the project, lasers will be used to calibrate the energy of the sensors. This requires compliance with the regulations and procedures put in place by the staff of both laboratories.