CBM Building and Infrastructure Wolfgang Niebur, GSI CBM Collaboration Meeting, 29. 2. 2008 Overview of new (since 2008) old status (before 2007) beamfocus costs

Cave+Supply building before 2007 – View in beam direction access shaft 6 × 6 m access opening 10 × 10 m

Cave before 2007 – Top view, surface level Annex building access shaft 6 X 6 m access opening 10 ×10 m

Cave 2008 – Top view, surface level Annex building access opening 6 ×10 m Roof, compacted earth

Cave 2008 – Top view into cave access opening 6 X 10 m Single wall

Cave before 2007 – Top view into cave access shaft 6 ×6 m Double wall Sandwich filling

Cave 2008 – Side view Compacted earth access opening 6 X 10 m Annex building Compacted earth Shielded area

Fair Baseline Technical Report 2006 (FBTR) Version 2 Costs Fair Baseline Technical Report 2006 (FBTR) Version 2 Building Cost FBTR 2006 is 12.78 Million Euro Cave 11,80 M€ Annex building 0,98 M€ The building cost in our Draft version as of now around 10.5 Million Euro The cost optimizations are the following: 1) The cave floor is in one level 2) The sandwich walling is obsolete 3) 1 slab/floor opening for the crane instead of 2. 4) The new opening dimension is 6m x 10 m.

Thank you for your attention.

Cave before 2007 – Side view Roof, compacted earth breakthrough 10 X 10 m

X X X X X - + - + + - Beamfocus CBM - Hades CBM-Magnet Cave wall + X - Hades-Target CBM-Magnet Cave wall Hades-Magnet Hades-Target CBM-Target - 4000 X X Beam + 6800 - 4700 12000 + 4700 - 4700 Hades-beamtime: beam pipe d 100 X 9400 + X - Hades-Target + + 1600 CBM-beamtime: beam pipe d 100 X 1600 X - Hades-Target W. Niebur 21.02.08