Dear All I will talk about baffle material study on Monday at SoLID meeting here are the slide. I may edit it a bit more during weekend http://hallaweb.jlab.org/12GeV/SoLID/download/baffle/talk/solid_baffle_zwzhao_20150316.pdf http://hallaweb.jlab.org/12GeV/SoLID/download/baffle/talk/solid_baffle_zwzhao_20150316.pptx Thanks Zhiwen