Dear All Thanks a lot for input from Garth,Klaus,Chao Here is a draft for the HGC talk at SoLID meeting at 13:30 ET Sat http://hallaweb.jlab.org/12GeV/SoLID/meeting_coll/2016_12/solid_hgc_zwzhao_201612.pdf http://hallaweb.jlab.org/12GeV/SoLID/meeting_coll/2016_12/solid_hgc_zwzhao_201612.ppt Please let me know any comment. Zhiwen