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Portail > Offres > Offre UMR5822-FLOJAC-030 - Post-doctorat sur les détecteurs cryogéniques pour la recherche de matière noire légère "H/F" et la physique des neutrinos de basse énergie "H/F"

Postdoctoral position on low-mass dark matter search and low-energy neutrino physics "H/F"

This offer is available in the following languages:
Français - Anglais

Date Limite Candidature : mardi 16 mars 2021

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General information

Reference : UMR5822-FLOJAC-030
Date of publication : Tuesday, February 23, 2021
Type of Contract : FTC Scientist
Contract Period : 24 months
Expected date of employment : 1 September 2021
Proportion of work : Full time
Remuneration : 2 675 euros gross monthly
Desired level of education : PhD
Experience required : 1 to 4 years


The hired person will join the MANOIR IP2I group in Lyon (France) that currently includes 2 professors, 2 associate professors and 2 CNRS research scientists. The team has a strong expertise in solid-state cryogenic detectors and is involved in multiple projects exploiting this technique: the EDELWEISS experiment searching for low-mass dark matter, the Ricochet experiment measuring the coherent scattering of neutrino reactors on nuclei at ILL, and the CUPID-Mo search for neutrinoless double-beta decays. For the first two projects, the team is developing new cryogenic detectors with low thresholds and precise measurements of both phonon and charge signals, making extensive use of the IP2I cryogenic facility and its access to the Laboratoire Souterrain de Modane (LSM).
The postdoc candidate will focus mainly on the coming SubGeV phase of the EDELWEISS experiment that will explore light candidates for Dark Matter (DM) particles from a wide range of BSM physics models. The main focus of the work will be the study, optimization and exploitation of an innovative detector design, named CRYOSEL, that combines the fine resolution of a phonon measurement amplified with the Luke-Neganov effect with a charge tag obtained with a nanowire sensor. The optimization will be performed on the IP2I cryogenic facility. The exploitation of the detector for physics will be done in the ultra-low radioactive background environment of the LSM. The detector studies will be performed in synergy with the detector development program of the Ricochet experiment, to which the candidate will have the opportunity to participate.


- Investigation of the process of amplification of phonon signal using the Luke-Neganov effect in large field, and evaluation of the electric field configuration that optimize the detector resolution.
- Characterization of the response of the nanowire sensor of a CRYOSEL detector to single-electron signals.
- Measurement of the performance of the final detector prototype in order to define the potential physics reach for different Dark Matter models.
- Coordinate the searches performed with the detector in physics runs at LSM.
- Redaction of publication on these topics.
- Supervision of student work on these topics.


- Good knowledge of astroparticle physics and detection methods
- Good experience of physics analysis, data modelling and simulations.
- Good communication skills and significant experience in paper writing
- Excellent team work and demonstration of independent thinking
- Experience in the operation of cryogenic detectors would be an asset

Work Context

The postdoc candidate will work closely with the IP2I Manoir group and the IP2I technical services, and within the EDELWEISS and RICOCHET international collaborations.

Constraints and risks

The postdoc candidate is expected to be traveling on a regular basis within France and abroad to attend collaboration meetings and to present his/her results at various international conferences and workshops. No work-related risks are foreseen.

Additional Information

Candidates, whose doctorate / PhD will be less than two years old on the date of the start of the post-doctorate, must send a cover letter, a CV, a research project and a list of publications in a single pdf file via the site emploi.cnrs.fr by following this link:
In addition, two letters of recommendation must be sent to c.augier@ip2i.in2p3.fr and j.gascon@ip2i.in2p3.fr. Applications must be received before May 1, 2021. The scheduled start date is September 1, 2021.

Prof. Corinne Augier (c.augier@ip2i.in2p3.fr)
Pr. Jules Gascon (j.gascon@ip2i.in2p3.fr)

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