POLAR, a compact detector for Gamma Ray Bursts photon polarization   measurements
  The design and the simulated performances of a compact detector dedicated to the measurement of GRB photon polarization is presented. Such a detector would permit to answer the question ``are most of the GRB strongly polarized?'' in a mission of one year in space. 
N. Produit, F. Barao, S. Deluit, W. Hajdas, C. Leluc, M. Pohl, D.   Rapin, J.-P. Vialle, R. Walter, C. Wigger