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Sujet de stage / Master 2 Internship

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Research and development on a light ions detector in air

Contact: ROUX Raphael, , raphael.roux@cea.fr, +33 1 69 08 51 27
The purpose of this work is to fabricate a detector for light ions of few MeV in air. The commercial detectors we use would be damaged by the direct beam of ions. Starting from calculations, simulations and then prototyping one will has to find a set-up to measure the ions scattered in air and deduce the incoming flux.
Possibility of continuation in PhD: Non
Deadline for application:29/03/2019

Full description:
In the framework of an experiment using a Helium ions beam of few MeV extracted in air, it is required to measure the ions flux incoming on a sample. The issue is related to the flux, namely between 1000 and 10000 ions/s which falls in a gap of the commercial detectors. To overcome this problem, we propose to operate an indirect detection of the beam thanks to a measurement of the small number of ions scattered off-axis in air with a classical detector. The candidate should have to develop a technical solution thanks to calculations and simulations of the interaction of the ions with air. Then, a prototype would have to be fabricated and checked by measurements with the ions beam.
This work will be carried out in the framework of the Laboratory for the study of light elements. This laboratory is engaged in topics focused on the behavior of light elements in the materials for energy. It contributes also to the studies related to the damages induced by the radiation and namely, the radiolysis in solutions. It is on this topic that the project is linked. The student will be inserted in the technical group in charge of the accelerator. This group, with the person responsible for the student at its head, is composed of one research engineer, one engineer-assistant specialized in electro techniques and automatisms, one engineer-assistant in mechanics and electricity and the operator of the accelerator. They take care about the operation of the accelerator (used for the analyses of matter and irradiation) as well as its maintenance.
Technics/methods used during the internship:
numerical simulations, ions beam measurements

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