Embed Size (px)
Citation preview
Harry Nelson
UCSB
HUSEP Ft. Collins
Nov. 19, 2005
Lower Campus
11/19/05 Ft. Collins DUSEL Workshop 2
CDMSHNN
SNO Cavern110ft H x 75ft OD
RectangularHall
60ft L x 50ft W x 50ft H
Ladder-Labs15ft W x 10ft H20ft W x 10ft H
Cryo-Pit65ft H x 50ft OD
Underground LaboratoryConceptual 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
ChemistryLab
11/19/05 Ft. Collins DUSEL Workshop 3
CDMSHNN
Clean Areas Overpressure – (all Class 2000)
(From Frasier Duncan)
H2S – air scrubbed
11/19/05 Ft. Collins DUSEL Workshop 4
CDMSHNN
Initial Suite of Experiments (Bernard Sadoulet)Deep Campus
Biology observ.
Deep Biology Drilling
3 Medium block experiments
PHYSICS
DMββSolar ν
TPC
11/19/05 Ft. Collins DUSEL Workshop 5
CDMSHNN
Xenon Infrastructure (Hanguo Wang)
11/19/05 Ft. Collins DUSEL Workshop 6
CDMSHNNBubble 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.
11/19/05 Ft. Collins DUSEL Workshop 7
CDMSHNN
Germanium Infrastructure (Harry Nelson) 20 m L 10 m W 10 m H (60 30 30 feet)
Liquid He and Nitrogen (compressor plant? 100 m2, 1000 sqft)
100 kVA electrical power
200 m3/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)
11/19/05 Ft. Collins DUSEL Workshop 8
CDMSHNN
Simulated Santa Barbara (better yet, Isla Vista) beach rest area
11/19/05 Ft. Collins DUSEL Workshop 9
CDMSHNN
Dongming Mei & AH, preliminary
Dark Matter Sensitivity versus Depth
11/19/05 Ft. Collins DUSEL Workshop 10
CDMSHNN
Dongming Mei & AH, preliminary
Sensitivity versus Depth
Internal BGNDTotal Muon BGNDMuonsMuon-Induced Neutrons
Degenerate
Inverted
Normal
