WPOL, a future space Compton wide field polarimeter: Optimization for polarimetry

In this article, we will present the key scientific drivers and the instrumental concept for WPOL (imaging technique, energy reconstitution and polarimetric measurements). Then, we will present an optimization of the thickness of the first detection layer performed through MEGALIB Monte-Carlo simulations. Finally, we will present a MEGALIB simulation of WPOL׳s observation of a source at 100 keV to compute the minimum detectable polarization reached by the instrument.