Reference : UMR9012-ALEHEN-038
Workplace : ORSAY
Date of publication : Friday, September 16, 2022
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 1 December 2022
Proportion of work : Full time
Remuneration : Between 2793 € and 3946 € according to experience
Desired level of education : PhD
Experience required : Indifferent
The simultaneous detection of gravitational waves and gamma rays from the merger of two neutron stars on 17 August 2017 marks the beginning of multi-messenger astronomy. This new astronomy requires continuous monitoring of the sky in the mega-electronvolt gamma-ray range to detect and locate gamma-ray bursts associated with binary neutron star mergers and eventually trigger observations at other wavelengths. Several nano-satellite space missions dedicated to the detection of gamma-ray bursts are under development in Europe, the USA and Asia. The COMCUBE project aims to add a new dimension to this CubeSat network by adding measurements of the polarisation of the prompt emission of gamma-ray bursts using a small Compton-type telescope.
COMCUBE is financially supported until 2024 by the AHEAD2020 project of the European Union's Horizon 2020 framework programme. The COMCUBE collaboration is coordinated by IJCLab and includes two other French research centres, CEA-Irfu and IRAP, as well as four European institutes: University College Dublin (Ireland), INFN-Roma (Italy), Johannes-Gutenberg University Mainz (Germany), and LIP-Coimbra (Portugal). As part of the AHEAD2020 project, the collaboration is building a 1U-scale model of the CubeSat including the telescope's main gamma-ray detectors. A stratospheric balloon flight experiment is planned for the summer of 2023 from Timmins (Canada), to qualify this prototype in a background environment representative of that of a CubeSat in low Earth orbit.
The post-doc will join the COMCUBE team at IJCLab under the supervision of V. Tatischeff and N. de Séréville to participate in the integration of the prototype in the laboratory and to develop the data processing software. He/she will take an active part in the stratospheric balloon flight experiment and in the analysis of the flight data.
The post-doc will contribute to the following activities:
• Development of data processing software for the gamma-ray instrument
• Preparation of the test plan for the instrument, first in a thermal chamber and then in the pressurized enclosure that will be used for the flight
• Performing the tests and calibration of the instrument in the laboratory
• Development of the telemetry software
• Participation in the data collection during the stratospheric balloon flight experiment
• Analysis of the data acquired during the flight, with the objective of identifying a contribution from the gamma-ray emission of a particular astrophysical source: the Crab Nebula
These activities are interdisciplinary, as they involve various aspects of computer programming, gamma-ray instrumentation and data analysis.
The candidate should have high level academic skills in computer programming and data analysis.
Knowledge of instrumentation in high energy physics will also be an advantage.
He/she should have the ability to formulate and lead a scientific project, to work in a team and to be accountable. A strong knowledge of English is required for integration into the international team.
Basic knowledge of high-energy astrophysics will be appreciated, but is not essential.
Desired professional experience: less than 2 years after the PhD.
-The project will be carried out at the Irène Joliot-Curie Physics Laboratory of 2 Infinities (IJCLab), which is a joint research unit (UMR) of the CNRS (IN2P3), the University of Paris-Saclay, and the University of Paris. It is located 20 km south of Paris on the Orsay campus and easily accessible by public transport (RER) in 35 minutes from the centre of Paris. IJCLab was created in 2020 from the merger of five laboratories (CSNSM, IMNC, IPN, LAL, and LPT). It has about 220 permanent researchers and teacher-researchers and 200 non-permanent researchers, including 120 PhD students, as well as 340 engineers, technicians and administrative staff. The research areas of the laboratory are nuclear physics, high-energy physics, theoretical physics, astroparticles, astrophysics and cosmology, particle accelerators, energy and environment, and health physics.
The post-doc will be integrated into the Astrophysics and Cosmochemistry (AC) team of the Astroparticles, Astrophysics and Cosmology (A2C) division. He/she will work with the laboratory staff involved in the COMCUBE project, which includes a teacher-researcher, two CNRS researchers, seven engineers and a PhD student. He/she will also collaborate with physicists and engineers from COMCUBE's partner laboratories, in particular CEA-Irfu and UCD, which are also building gamma-ray detectors for the prototype.
Constraints and risks
Short periods of travel within France and abroad should be expected
Laboratory work involves the risk of exposure to ionising radiation.
Submit a covering letter and CV without any break in date showing diplomas, titles and work and professional experience.
As IJCLab is subjected to ZRR (Zone à Régime Restrictif) military regulation, hiring choices must be approved by the Haut Fonctionnaire Securité Défense (HFSD). Therefore, the date of employment written above should be understood as provisional, and may need to be delayed.
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