Underwater robots equipped with artificial electric sense for the exploration of unconventional aquatic niches

International audienceThis article presents different use of the electric field perception in the context of underwater robot navigation. To illustrate the developed navigation behaviours we will introduce a recently launched european project named subCULTron and will show some simulation and experimentation results. The project sub- CULTron aims at achieving long-term collective robot exploration and monitoring of underwater environments. The demonstration will take place in the lagoon of Venice, a large shallow embayment composed of salt turbib water that represents a challenging environment for underwater robots as common sensor like vision or acoustic are difficult to handle. To overcome turbidity and confinement problems our robots will be equipped with artificial electric sensors that will be used as the main sensorial modality for navigation. Electric sense is a bio-inspired sense that has been developed by several species of fish living in turbib and confined underwater environment. In this paper, many different robotic behaviours based on the electric field perception will be presented, in particular we will address reactive navigation, object/robots detection, and object localization and estimation

42 Deposited dose measurement using bremsstrahlung X-rays

International audienc

Beam monitoring and dosimetry tools for radiobiology experiments at the cyclotron ARRONAX

International audienceThe ARRONAX (Accélérateur pour la Recherche en Radiochimie et Oncologie à Nantes Atlantique) cyclotron in Saint Herblain - France is a facility delivering alpha particles at 68 MeV (1). One of its purposes is to become a platform for radiobiological studies. The radiobiological studies evolvearound two axes: the low energy range (<10MeV) in order to optimize radio-immunotherapy (RIT) treatments, and the high energy range (30-68 MeV) in order to puzzle out the fundamental mechanisms generated by cells in response to ionizing radiations.The ARRONAX platform for radiobiology is currently preparing to use a time lapse fluorescence confocal microscope suitable for the irradiation of cell wells. This platform should contain tools for beam intensity checks to enable accurate and repeatable irradiation conditions and a device to monitor thedelivered dose