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Portal > Offres > Offre UMR7154-BENBRE-022 - Post-doctorant concepteur et développeur d'une nouvelle génération de sismomètres H/F

Post-doctoral designer and developer of a new generation of seismometers H / F

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Français - Anglais

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General information

Reference : UMR7154-BENBRE-022
Workplace : PARIS 13
Date of publication : Wednesday, January 29, 2020
Type of Contract : FTC Scientist
Contract Period : 24 months
Expected date of employment : 1 March 2020
Proportion of work : Full time
Remuneration : From 2695, 56 euros gross monthly depending on professional experience
Desired level of education : PhD
Experience required : Indifferent

Missions

In parallel of the InSight technology optimization, IPGP is willing to develop a new generation of seismometers targeting very high performances (self-noise of a few 10 -11 m.s -2 /sqrt(Hz) to address the Moon seismology science objective and other missions needing ultra-sensitive accelerometers.

Pioneers (Planetary Instruments based on Optical technologies for an iNnovative European Exploration using Rotational Seismology) is a project funded by the European Union in the frame of the H2020 program. Within this project, IPGP is responsible for the development of a translation
seismic sensor, in partnership with iXBlue (a French leading company specialized in optronic and Fiber Optics Gyroscopes), who will develop its optical readout.
A seismometer with an optical displacement transducer operated in open loop would get rid of intrinsic limitation of classical VBBs whose noise sources are due to the feedback or electrostatic forces of their displacement transducers.

Our project objective is to develop such a seismometer from scratch up to a TRL 4/5 prototype and to demonstrate the performances potential of this technology.

iXBlue is in charge of the optical part, i.e. the interferometric displacement sensor and IPGP is responsible for the mechanical oscillators and the whole sensor as a system.

The PIONEERS project will provide procurement and technical support to build and test the prototype.

Activities

The postdoctoral research will focus on :
- the sensor architecture trade-off,
- sensor modelling,
- performances budget and tests.

The postdoctoral will be involved mainly in the global system study :
- specification flow down to the 2 mains components (optical readout and mechanical oscillator),
- architecture trades-off,
- sizing,
- performances budget and modelization,
- sensor integration,
- functional and performances tests.

Skills

The candidate should have some experience in experimental physics and instrument engineering.

The candidate must have a good knowledge of :

- interferometry;
- optical development
- space instrumentation will be a plus.

Work Context

The Paris Institute of Physics of the Globe is a large higher education and research establishment. It brings together more than 500 people: researchers recruited from all over the world, engineers, technicians, administrative agents and post-doctoral students and doctoral students from all countries sharing the same passion for the sciences of the Earth, planets and the environment. Many cooperation agreements are set up with prestigious foreign institutions, allowing permanent scientific exchanges around the world.

The planetology and space sciences team is one of the components of the Paris Institute of Globe Physics. It participates in the preparation of future space missions in planetology and Earth observation, designs and produces on-board instruments and develops research themes in planetology and Earth observation.

Since the 90's IPGP has developed a worldwide expertise in the development of ultrasensitive seismometers to study the internal structure of telluric planets (especially the Moon and Mars). IPGP was responsible for the delivery of the long-period sensors (or VBB for Very Broad Band) of the SEIS (Seismic Experiment for Interior Structure) experiment of the NASA
Insight mission.

Constraints and risks

Frequent displacements at iXblue (St Germain en Laye)

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