Post-doctoral researcher in experimental nuclear physics: commissioning of the SIRIUS detector (M/F)

Job Description

Missions

The “Spectroscopy Decay Fission” team in the department of Nuclear Physics at the IJCLab, Orsay, seeks a postdoctoral researcher to take a major role in the development of the novel SHEXI detection system. The award of the D-SHEXI ANR grant enables the team to investigate innovative methods to improve the detection efficiency of SIRIUS for L X-rays, enabling the unambiguous identification of the atomic numbers of newly discovered superheavy elements.
Additionally, a proposal has recently been submitted to the University of Jyväskylä to commission SIRIUS at the focal plane of the RITU separator. If accepted, the post-doctoral fellow is therefore expected to be off-site for a considerable time during the installation, testing and commissioning runs in Finland. Following successful commissioning, the postdoctoral fellow is expected to propose an experimental program exploiting SIRIUS@RITU.
Finally, the post-doc will be provided with data on 217Pa, already obtained using RITU, to study single-particle energies, residual interactions and E3 correlations beyond 208Pb and address the non-existence of the Z=92 shell gap.
The postdoc will work under the supervision of K. Hauschild and A. Lopez-Martens at the IJCLab and in collaboration with the SIRIUS teams at the IPHC, GANIL and CEA-Saclay. development.

Activity

The postdoctoral fellow will take a leading role in the detector and ASIC preamplifier tests required for the SHEXI upgrade of SIRIUS and will participate in commissioning the SIRIUS detection system. Therefore, the successful candidate will contribute to activities such as
• SHEXI silicon detector reception and customer acceptance tests
• characterisation of the XGLab ASIC preamplifiers
• characterisation of digitisers
• the installation and verification of the performance of SIRIUS at JYFL
• verification and update of the online analysis software
• in-beam commissioning of SIRIUS and conducting subsequent experiments
• analysis of these data and their dissemination (conference presentations and journal publications)

Your Profil

Skills

Candidates must either already hold, or have obtained before the agreed start date of the contract, a doctorate in experimental nuclear physics.
Candidates must have proven research skills, evidenced by at least one publication as the first or joint first author on a subject or activity related to the project.
Demonstrable knowledge of silicon detectors and their operation is an essential criterion.
Demonstrable knowledge of front- and back-end electronics and their operation is an essential criterion.
The ability to work both in a team and independently will be necessary for a successful commissioning and experimental runs.
Previous experience with the recoil-decay tagging technique will be a valuable skill for analysing the experimental runs. As well as a solid level of programming in C++/ROOT.

Your Work Environment

The Irène Joliot-Curie Physics Laboratory of 2 Infinities (IJCLab) is an UMR under the supervision of the CNRS (IN2P3), the University of Paris-Saclay. The laboratory is located on the campus of the Université Paris-Saclay in Orsay. The campus is located 20 km south of Paris and easily accessible by RER in 35 minutes. IJCLab was created in 2020 from the merger of five laboratories (CSNSM, IMNC, IPN, LAL, LPT). The staff comprises nearly 560 permanent staff (340 engineers, technicians, and administrators; and 220 researchers and lecturers) and approximately 200 non-permanent staff, including 120 doctoral students. The research themes of the laboratory are nuclear physics, high-energy physics, theoretical physics, astroparticle physics, astrophysics and cosmology, particle accelerators, energy and the environment, and health. IJCLab has very significant technical capacities (around 280 IT) across the major fields required to design, develop/implement the experimental devices necessary for its scientific activity.

Constraints and risks

Periods of travel within France and abroad are to be expected. The candidate will be required to work outside normal working hours. Exposure to ionising radiation.
Applicants must provide the following documents :
◦ A CV, without any breaks in the timeline
◦ A cover letter highlighting experience related to the position
◦ Contact information for at least two references

Compensation and benefits

Compensation

From 3131,32 euros to 3569,85 euros gross per month depending on experience

Annual leave and RTT

44 jours

Remote Working practice and compensation

Pratique et indemnisation du TT

Transport

Prise en charge à 75% du coût et forfait mobilité durable jusqu’à 300€

About the offer

About the CNRS

The CNRS is a major player in fundamental research on a global scale. The CNRS is the only French organization active in all scientific fields. Its unique position as a multi-specialist allows it to bring together different disciplines to address the most important challenges of the contemporary world, in connection with the actors of change.

CNRS

The research professions