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Reference : UMR7164-SANMER-007
Workplace : PARIS 13
Date of publication : Thursday, June 25, 2020
Type of Contract : FTC Scientist
Contract Period : 24 months
Expected date of employment : 1 October 2020
Proportion of work : Full time
Remuneration : between € 3054.06 and € 3768.24 gross monthly depending on experience
Desired level of education : 5-year university degree
Experience required : 1 to 4 years
The APC laboratory is engaged in the development of cryogenic detectors and associated low noisereadout chains (bolometers / micro calorimeters and kinetic inductance detectors (KIDs). These developments are part of major international visible, millimeter or X astronomy projects for ground and space observatories.
The profile sought will relate to one or other of the following themes:
The commitments made by the APC on the ATHENA project consists in the development and delivery of front end readout chain (WFEE) for the X-IFU instrument (http://x-ifu.irap.omp.eu/). WFEE is mainly based on the development of integrated circuits (ASIC). Today the announce of the BiCMOS AMS technology stop makes appear a need for re-design in STmicroelectronic technology 130nm of functions existing today in AMS. The design, characterization and integration of analog and mixed ASICs is a major aspect of these developments. They require skills in design (Cadence) of low noise analog circuits, but also of digital circuits such as serial bus decoders or sequencing state machines. Thus, experience / motivation for the design of analog ASICs is a prerequisite for this position. The characterization of ASICs is a crucial stage of the space project and involves the development of specific tests benches, sometimes mobile, requiring a strong motivation for measurements and data analysis. Also, an experience of low noise measurements (spectrum analyzer), stabilization / control / thermal drift and radiation tests (Dose and SEE) will be a very much appreciated asset. In addition, the deployment of an automated measurement bench for low noise characterization, low thermal drift and robustness to radiation, requires working on the development of an interface and remote control of measurement and optimization devices for tests benches. Skills in Labview, Python and remote control of measurement equipment will also be critical.
The study of the minute polarized fluctuations of 3K fossil radiation (Cosmic Microwave Background, CMB) appears today as an unavoidable way to progress in our understanding of the Universe. In this perspective, we are developing KIDs (Kinetic Inductance Detectors) whose measurement principle is based on variations in the kinetic inductance of a superconductor following the absorption of the photon flux. The reading uses a microwave resonance technique which allows easy multiplexing of a large number of pixels. The ultimate goal of this research is the realization of large arrays of detectors (several thousand) with a sensitive response to polarization. This last point is obtained through the use of a broadband antenna and a set of millimeter filters produced in planar technology. The work will be based on recent results and will focus on at least one of the following points: (i) modeling and design, (ii) low temperature characterizations, (iii) micro-manufacturing processes. The samples will be taken at the Paris observatory and at the C2N technological platform (Orsay). This work will be carried out in collaboration with the Paris Observatory, the Néel Institute and the LPSC in Grenoble as well as the Centro Atómico in Bariloche and the CNEA in Buenos Aires (Argentina).
The profile sought will relate to one or other of the themes and will be essentially focused on the measurement and analysis aspects.
Constraints and risks
The work will be done within an APC team and in interaction with international teams. The candidate will have to integrate into a team, follow project and quality management rules, and will have to present his work in English in reports or article and during conferences or consortium.
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