Dear collaborators, I have posted a preliminary study of the light collection though light guides for the outer layers of the bcal in GlueX-doc-959. Cheers, Elton. Elton Smith Jefferson Lab MS 12H5 12000 Jefferson Ave Suite # 16 Newport News, VA 23606 elton@jlab.org (757) 269-7625 (757) 269-6331 fax