1. Harry Nelson UCSB HUSEP Ft. Collins Nov. 19, 2005 Lower Campus

2. CDMSHNN 11/19/05 Ft. Collins DUSEL Workshop 2 SNO Cavern 110ft H x 75ft OD Rectangular Hall 60ft L x 50ft W x 50ft H Ladder-Labs 15ft W x 10ft H 20ft W x 10ft H Cryo-Pit 65ft H x 50ft OD Underground Laboratory Conceptual Layout White Paper Description in Progress  Excavation has begun under contract with Redpath  First new space in about 1 year  Laboratory complete in 2007 SNOLAB Chemistry Lab

3. CDMSHNN 11/19/05 Ft. Collins DUSEL Workshop 3 Clean Areas Overpressure – (all Class 2000) (From Frasier Duncan)  H 2 S – air scrubbed

4. CDMSHNN 11/19/05 Ft. Collins DUSEL Workshop 4 Initial Suite of Experiments (Bernard Sadoulet) Deep Campus Biology observ. Deep Biology Drilling 3 Medium block experiments PHYSICS DM ββ Solar ν TPC

5. CDMSHNN 11/19/05 Ft. Collins DUSEL Workshop 5 Xenon Infrastructure (Hanguo Wang)

6. CDMSHNN 11/19/05 Ft. Collins DUSEL Workshop 6 Bubble Lab Infrastructure (Andrew Sonnenschein) Scalability and simplicity of construction of bubble and droplet chambers may create a demand for significant amounts of deep underground space on a short time scale. Depth. Must Henderson equal SNOLAB depth to compete effectively for these projects? Would Henderson “central campus” be an acceptable place to be in 2010? Type of underground space: General purpose, “Gran Sasso style” caverns would allow the lab to quickly adapt to new technologies, while custom excavations force us to plan further ahead and limit flexibility. Access for large, heavy modules. These technologies probably allow instruments up to ~1 ton active mass to be built outside the lab and brought in on trucks. Need water for shielding rock neutrons and perhaps for Muon veto Cherenkov counters. Can share infrastructure for water production and discharge with other experiments? Venting: may require emergency capability to safely vent asphyxiating or mildly toxic gases. Similar requirement will exist for large cryo experiments.

7. CDMSHNN 11/19/05 Ft. Collins DUSEL Workshop 7 Germanium Infrastructure (Harry Nelson)  20 m L  10 m W  10 m H (60  30  30 feet)  Liquid He and Nitrogen (compressor plant? 100 m 2, 1000 sqft)  100 kVA electrical power  200 m 3 /minute air flow (6000 cfm)  low Radon capability (details need work)  5-ton crane  What facilities are in common with the ββ program? (Majorana, Gerda, Genius, CUORE)

8. CDMSHNN 11/19/05 Ft. Collins DUSEL Workshop 8  Simulated Santa Barbara (better yet, Isla Vista) beach rest area

9. CDMSHNN 11/19/05 Ft. Collins DUSEL Workshop 9 Dongming Mei & AH, preliminary Dark Matter Sensitivity versus Depth

10. CDMSHNN 11/19/05 Ft. Collins DUSEL Workshop 10 Dongming Mei & AH, preliminary  Sensitivity versus Depth Internal BGND Total Muon BGND Muons Muon-Induced Neutrons Degenerate Inverted Normal