Recently there has been a lot of interest around the world in the use of
nuclear reactors to measure theta 13, the last undetermined angle in the
3-neutrino mixing scenario. In this paper the motivations for theta 13
measurement using short baseline nuclear reactor experiments are discussed. The
features of such an experiment are described in the context of Double Chooz,
which is a new project planned to start data-taking in 2008, and to reach a
sensitivity of sinsq(2 theta 13) < 0.03.Comment: Submission for XXXIXth Rencontres de Moriond, Electroweak
Interactions and Unified Theories, held in La Thuile, Italy, March 2004 (9
pages 4 figures
