SNOLAB – An International Facility for Underground Science

Expand underground space to allow several experiments to operate simultaneously

Provide a surface building to support the underground experiments

Experiments selected on the basis of scientific meritand technical feasibility

IX International Conference on « Neutrino Telescopes » Venice, 23 February 2005

V. Zacek Université de Montréal

Dongming Mei & AH, preliminary

Relative Attenuation of Muons & Muon-Induced Activity

SNOLAB

Muon Flux Muon-Induced Neutrons

Muon-Induced Cosmogenics

SNO Cavern110ft H x 75ft OD

RectangularHall

60ft L x 50ft W x 50ft H(20m x 16.5m x 16.5m)

Ladder-Labs15ft W x 10ft H

(5m x 3.3m) 20ft W x 10ft H(6.6m x 3.3m)

Cryo-Pit65ft H x 50ft OD

(21m x 16.5m 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

Features of underground space

• All space within a common clean boundary (~class 2000)

• Common infrastructure includes dirty-clean transition and materials handling, power (~1.5 MW), cooling (300 T), water, UPW, networking (Gb/s off site, high speed internal) and clean ventilation system

• Design allows for future expansion but scale is limited

Provide support for underground program– Clean assembly, – lab space – meeting rooms,– Computing facilities– Office space

Building – Ready end of May, 2005

New ExperimentsDark Matter, Double Beta Decay, Low-Energy Solar Neutrinos

Letters of Interest can be submitted at any time!

15 LOI’s received & evaluated following

January 2004 call …1 more received last week and another expected

early 2005

Initial Suite of Experiments under consideration

along with longer term Scientific Road-Map …

LOI’s Received• CDMS Dark Matter US (12)• COBRA Double beta UK (6) DE, It• EXO Double Beta US(6) Ca(2) Ru, HL• HALO Supernova Ca(3) US(2)• Lithium Solar Ru(1)• Picasso Dark Matter Ca(3) US It• Noble Gas Solar US• Zeplin Dark Matter UK(4) US(2) Ru Pt• CLEAN Solar, DM US(4)• DRIFT Dark Matter UK(4), US(4)• Gerda Double Beta DE• Lena SuperNova DE• Majorana Double beta US (5) Ca(1)• SNO+ Solar, Geo Ca(2) US(1)• Xenon Dark Matter US(7)

Experiment Evaluation Committee

• Chair – B. Barish

• Secretary - A. Hime

• Members– B. Balantenkin

– C. Burgess

– T. Kajita

– J. Martin

– K. Ragan

– K. Scholberg

– D. Wark

Workshops

I. August 20, 2002 (Sudbury)Science & Information Gathering

II. November 21-22, 2002 (Ottawa)Prospective Experiments & Infrastructure Needs

III. May 12-14, 2004 (Sudbury)Refine Infrastructure Needs & Kick-Off

Experiment Evaluation Process

IV. Planning for May, 2005Finalize Infrastructure Needs & Establish

Scientific Road-Map