====== January 21 Agenda ====== ==== Summary of Last Week's Discussion ==== * Accept DongMing's Report - Go with 2.3 m of water thickness in shield * Radiopurity of Acrylic and Stainless are similar (input to thickness decision) * Immersion Tank goes in far corner * optimal shielding * possible upgrade to wrap-around water shield and PMT water readout * Lower water shield down to tank (cost driver) * Top loading from above water shield (removable veto shield) * OR Side Loading - needs engineering concept * Nitrogen blanket becomes load lock mechanism either way * Crane is above water shield and helps with veto shield construction and transport * Lee will talk to Dufrane. Need a very rough cost per area coverage for water shield * New Drawings need to go to DUSEL by Jan 29 - in time for review by larger collaboration for Feb 4 teleconf ==== Discussion for this week ==== * Summarize Lee and Bob's discussion wrt transfer of infrastructure into DUSEL format. * Summary of DuFrane discussion or beginning of a water shield cost estimate * Lee spoke with Lou of Dufrane earlier this week * January 2009 concept was: * 10-ft wide x 12-ft long x 9-ft high * 8-ft thick shielding on four sides * 5-ft thick shielding on top and bottom * Structural (carbon) steel support structure * Shield segments slide in and out to provide access * Quote was $2.785 million * January 2010 concept * Much larger internal space * Labyrinth access * Similar shielding thickness * Structural (carbon) steel support undesirable * Dufrane unwilling to provide quote or even SWAG at current level of consideration * Scaling calcs underway * Surface bldg vs Shallow site. re: decision by DUSEL not to develop 300' or 800' areas * Revisit concept drawings - what is still missing, what needs to be changed * Items due in one week * Location of your experiment * for physics experiments, this means identification of either the mid-level (4850L) or deep-level (7400L) campus for installation of your experiment * Experiment installation drawing * Establish the required footprint * Identify all major subsystems * Requirements and hazard identification * Underground and surface spaces for fabrication, assembly, and other uses should be identified * Major hazards and handling and mitigation plans should be identified