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Andrew Hime with Fraser Duncan & David Sinclair DUSEL Lecture Series Berkeley, CA May 20, 2005

Andrew Hime with Fraser Duncan & David Sinclair DUSEL Lecture Series Berkeley, CA May 20, 2005. Status SNOLAB Development Deep Physics SNOLAB-DUSEL Relationship. Relative Attenuation of Muons & Muon-Induced Activity. Dongming Mei & AH. Gran Sasso. Soudan. WIPP. SNOLAB. SNO. CC. NC.

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Andrew Hime with Fraser Duncan & David Sinclair DUSEL Lecture Series Berkeley, CA May 20, 2005

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  1. Andrew Hime with Fraser Duncan & David Sinclair DUSEL Lecture Series Berkeley, CA May 20, 2005

  2. Status SNOLAB Development Deep Physics SNOLAB-DUSEL Relationship

  3. Relative Attenuation of Muons & Muon-Induced Activity Dongming Mei & AH Gran Sasso Soudan WIPP SNOLAB

  4. SNO CC NC High-purity water & detector construction materials … NC background equivalent to < 1 neutron / 1 kt / day ~ 0.4 neutrons / tonne / year!

  5. 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 expt,s …  Experiments selected on the basis of scientific merit, technical feasibility, and appropriateness for SNOLAB 2001 - CFI Solicitation for Facilties Proposals 2002 - SNOLAB Proposal Accepted 2003 - CFI + Provincial Funding Released (~ $50M)

  6. Workshops 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 August 15-18, 2005 Establish Initial Suite of Experiments & Scientific Road-Map  Call for LOI’s Jan.26, 2004

  7. … Experimental Interest & Response since Jan.26, 2004 Call for LOI’s …

  8. Experiment Advisory Committee LOI Evaluation Scientific Merit Infrastructure Needs Progress on R&D Technical Feasibility Safety Funding & Schedule Participation & Management Chair – B. Barish Secretary - A. Hime Members • B. Balantenkin (US) • C. Burgess (CND) • T. Kajita (Japan) • J. Martin (CND) • K. Ragan (CND) • K. Scholberg (US) • D. Wark (UK) First phase of the evaluation process is now complete … proceeding to define an initial suite of experiments & scientific roadmap for SNOLAB

  9. Solar + KamLAND Vacuum ~ 8 x 10-5 eV2 Matter 1 SNO+  SNO   CLEAN

  10. Atmospheric ~ 2 x 10-3 eV2 Hierarchy? Absolute Mass Scale?

  11. Additional CP Phases for Majorana Neutrinos  Chooz et al ~ 3 x 10-3 eV2__ 10-3 0 0.05 0.1 sin213 Values of 13 & CP? CP Violation in Neutrino Sector? Leptogenesis & Matter-Antimatter Asymmetry in the Universe? Are Neutrinos their own Antiparticles?

  12. e- ne Z Z+1 ne e- Z+2 e- ne Z e- Z+1 Z+2 bb Decay Requires Massive Majorana Neutrino L=2 Endpoint Energy

  13. Our Dreams Next Generation We Are Here Allowed Phase Space for a Majorana Neutrino Mass 76Ge ~ 1025 yrs Majorana GerDA EXO COBRA ~ 1026 yrs ~ 1027 yrs ~ 1028 yrs ~ 1029 yrs

  14. mD ~ 200 GeV m ~ 0.01 - 0.1 eV Seesaw Mechanism MR ~ 1015 GeV ! Majorana Neutrino Mass & GUT Scale

  15. Dark Matter Results & Dreams } Where we Are X > 1000 } Our Dreams SuperCDMS ZEPLIN-IV XENON CLEAN DEAP DRIFT-III

  16. Dark Matter Sensitivity versus Depth Dongming Mei & AH

  17. Double Beta Decay versus Depth Dongming Mei & AH

  18. Sensitivity to (,n) Dongming Mei & AH

  19. Office Space Meeting Rooms & Auditorium Computing Facilities Regular & High Bay Laboratories Clean Assembly & Transport Occupancy expected in July, 2005

  20. Laboratory Space

  21. Laboratory Space

  22. Excavation Progress

  23. Chiller Drift Excavation Progress

  24. Crusher Station Excavation Progress

  25. Junction of Top Access Drift and Bottom Access Ramp Excavation Progress

  26. Bottom Access Ramp Excavation Progress

  27. Junction of Ladder Access Drift and Top Access Cryopit Excavation Progress

  28. Cube Hall

  29. Cube Hall 5T Monorail 20T Hitches in Back Removable Top Deck Future Mid Level Platform Fire Escape Stair Well

  30. Cube Hall

  31. Cube Hall

  32. Cube Hall

  33. Cube Hall

  34. Cube Hall

  35. Ladder Labs

  36. Ladder Labs

  37. Ladder Labs

  38. Ladder Labs

  39. Cryopit

  40. Cryopit

  41. SNO Cavern

  42. Potential Experimental Layouts

  43. Summary • The facility design provides 34,000 sq ft of class 2000 clean room space. • Phase I will have sufficient space for 2 large experiments (Cube Hall, SNO Cavern) and 2-3 small/medium scale experiments (Ladder Labs). • Phase II will provide space for an additional large scale experiment (Cryopit). • Personnel facilities double the proven SNO design and provide room for 50 nominal occupancy. • Cooling capacity is expected to be ample for the first generation of experiments. • Power appears to be sufficient for Day 1 but will need upgrading.

  44. SNOLAB and the DUSEL Process

  45. Some Simple Facts • SNOLAB is presently under construction and a scientific program is under development with focus upon particle astrophysics experiments requiring a deep site (neutrinoless double beta decay, low-energy solar neutrinos, and cosmological dark matter). • An enthusiastic response to a call for LOI’s with significant (~50%) initiative and leadership from US. • SNOLAB will provide a premier deep underground laboratory during the next decade which is critical to maintain the field of underground science while establishing DUSEL.

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