\contentsline {section}{\numberline {1}Introduction}{2}{section.1} \contentsline {section}{\numberline {2}Description}{2}{section.2} \contentsline {subsection}{\numberline {2.1}PMTs and Bases}{4}{subsection.2.1} \contentsline {subsection}{\numberline {2.2}Enclosures}{5}{subsection.2.2} \contentsline {subsection}{\numberline {2.3}Sapphire Windows}{8}{subsection.2.3} \contentsline {subsubsection}{\numberline {2.3.1}Window Strength and Reliability}{9}{subsubsection.2.3.1} \contentsline {subsubsection}{\numberline {2.3.2}Window Radiopurity}{10}{subsubsection.2.3.2} \contentsline {subsection}{\numberline {2.4}Conduits and Cables}{10}{subsection.2.4} \contentsline {subsection}{\numberline {2.5}Carrier Plate}{10}{subsection.2.5} \contentsline {subsection}{\numberline {2.6}Central manifold}{11}{subsection.2.6} \contentsline {subsection}{\numberline {2.7}Vacuum System}{12}{subsection.2.7} \contentsline {subsection}{\numberline {2.8}Feedthroughs}{12}{subsection.2.8} \contentsline {section}{\numberline {3}Handling and Assembly}{13}{section.3} \contentsline {section}{\numberline {4}Radiopurity, System}{15}{section.4} \contentsline {section}{\numberline {5}Remaining Issues}{15}{section.5} \contentsline {section}{\numberline {6}Plan for Completion of Energy Plane}{15}{section.6} \contentsline {subsection}{\numberline {6.1}Remaining Design Tasks}{18}{subsection.6.1} \contentsline {subsection}{\numberline {6.2}R\&D Activities}{18}{subsection.6.2} \contentsline {section}{\numberline {7}Cost and Schedule}{21}{section.7} \contentsline {section}{\numberline {8}Appendix}{22}{section.8} \contentsline {subsection}{\numberline {8.1}Test pressure ratio}{22}{subsection.8.1} \contentsline {subsection}{\numberline {8.2}Minimum Window Thickness}{23}{subsection.8.2}