Reference : UMR7164-KEVVEL-006
Nombre de Postes : 1
Workplace : PARIS 13
Date of publication : Monday, January 16, 2023
Type of Contract : FTC Scientist
Contract Period : 24 months
Expected date of employment : 1 September 2023
Proportion of work : Full time
Remuneration : Between 2889.51 and 4082.90€ gross monthly depending on experience.
Desired level of education : PhD
Experience required : Indifferent
Drive a research project about the CMB S4 instrument in the APC cosmology group with instrumentalists involved in ATHENA and QUBIC and with the Simons Observatory team.
An experience in design/characteriqation of low noise detection chain; Cryogenic detection chain experience (SQUID, TES) is required.
- Study of the first version of a "CMB S4 Warm Readout" initiated by SLAC Stanford. Meeting research at Stanford/Berkeley considered.
- Design a new version of low-noise and differential front-end for the CMB-S4 superconducting sensors : biasing and readout.
- Operation of the low-noise analog front-end couple to the CMB-S4 cryogenic detection chain; also interfacing the SLAC digitals readout.
- Publications in peer reviewed journals (IEEE JSSC, IEEE TAS, JLP, ...).
- Communication of the results in APC cosmology group and in the CMB-S4@IN2P3 community.
- Students supervising.
- Previous experience in front-end instrumentation recherches.
- Scientific communications.
- Autonomous and ability to work in a team.
- Ability to work and evolves in an international collaboration context.
CMB (cosmic microwave background) S4 (stage 4) is a 4th generation ground based instrument aiming at observing cosmological B modes. These are thought to have been generated in the very early Universe and would provide unique information about the origin of the Universe and fundamental laws of physics at the very high energies. To achieve this goal the experiment will use 500 000 cryogenic detectors distributed over 85 optics tubes deployed on a multiple small (SAT) and large (LAT) aperture telescopes, which will operate from Chile and in Antartica a decade from now. This will make it the largest and most advanced CMB observatory every constructed. The detector arrays will require advanced, low-noise readout electronics which needs to be developed in the next ten years. IN2P3 considers a strong involvement in the CMB-S4 project focusing in particular on the development of the detection chain and the data management. As part of this effort the APC team in collaboration with Stanford and Berkeley is tasked with leading the study of the warm front end readout electronics. The postdoc will join this activity, starting in September 2023.
The research activity will be done in a context of a starting collaboration with SLAC about the CMB S4 "warm front-end read-out". Instrumentale activities will take place first at APC with ATHENA and QUBIC instrumentalists, and interacting with Cosmology group (especially Simons Observatory participants) and LPSC and IJCLAB.
Constraints and risks
Travel in France or abroad is to be expected.
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