January 21 Agenda

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

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