As-built 09 April 2008 Cuore concrete support structure with jack screws in place Cuore site with elevator deck ready for installation 1 Robin Lafever CUORE Structure assembly sequence RIGHT NOW, the Cuore experimental area is under construction. Many construction details are still being designed, Including clean room and Radon mitigation strategies. Timing may well limit the options being considered for the installation of a Radon barrier and clean room modificatios.

Superimposing the CAD model illustrates how the build-up sequence (TBD) may influence the choices for an appropriate Radon barrier because of access and installation constraints Build-up sequence Support structure with major structural elements in place, including the elevator deck 2 Robin Lafever CUORE Structure assembly sequence

Build-up sequence The current clean room geometry is shown here as an ‘ideal’ layout with no interfering structure around it. Assuming a Radon barrier is applied to the outer surfaces of the clean room, this is the time to do it. However, this is not a real possibility. Therefore, we must consider methods for installing a barrier before the clean room construction. Or, modifying the clean room panels such that they ARE the Radon barrier. 3 Robin Lafever CUORE Structure assembly sequence

Build-up sequence The electronics bay currently has no requirement for either particle count or Radon exclusion, but, further restrict access to the clean room roof. 4 Robin Lafever CUORE Structure assembly sequence

Hut carpentry will probably precede clean room installation, But access to the clean room exterior is clearly restricted 5 Robin Lafever CUORE Structure assembly sequence

At this point, the only options for installing a Radon barrier will be limited to the INSIDE surfaces of the clean room. 6 Robin Lafever CUORE Structure assembly sequence