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SNOLAB

SNOLAB . TRIUMF 5YP August 3, 2007. Outline. Science Experiments Status TRIUMF/SNOLAB relationship Detailed list of collaborative efforts. Canadian astroparticle physicists are positioned very well. Canada has SNOLAB- the best (deepest, cleanest) underground lab in the world

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SNOLAB

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  1. SNOLAB TRIUMF 5YP August 3, 2007

  2. Outline • Science • Experiments • Status • TRIUMF/SNOLAB relationship • Detailed list of collaborative efforts

  3. Canadian astroparticle physicists are positioned very well. • Canada has SNOLAB- the best (deepest, cleanest) underground lab in the world • Underground measurements of rare processes are required • To understand fundamental properties of the universe: dark matter, neutrino character, neutrino mass, neutrino oscillations, higher unification, matter-antimatter asymmetry • To further our understanding of physical processes: supernova, solar energy generation, neutrino propagation through the sun and heat generation in the earth. • The scale and complexity of these experiments are appropriate for the resources available to Canadian physicists.

  4. e- ne Z Z+1 ne e- Requires Massive Majorana Neutrino L=2 Z+2 Two Neutrino Spectrum Zero Neutrino Spectrum 1% resolution e- G n G n (2 ) = 100 * (0 ) ne Z e- Z+1 Z+2 0.0 0.5 1.0 1.5 2.0 Sum Energy for the Two Electrons (MeV) Endpoint Energy bb Decay

  5. Next Generation Future, as necessary We Are Here Allowed Phase Space for a Majorana Neutrino Mass 76Ge Experimental Issues for double beta decay Decrease and understand backgrounds to 1 event/region of interest/detector- running time Need good energy resolution to separate zero-neutrino and 2-neutrino modes. Increase mass to 1 tonne and ultimately 100 tonne. Studies of the field (NUSAG in the US, for example) recommend a phased approach, in which mass increases as larger masses are ruled out and technology improves. There is no proven, scalable technology. ~ 1025 yrs ~ 1026 yrs ~ 1027 yrs ~ 1028 yrs ~ 1029 yrs

  6. …the Milky Way halo bulge sun disk Dark Matter

  7. Erecoil < 100 keV R << 1 event/kg/day Surfing Through the WIMP-WIND 230 km/s

  8. SNOLAB Surface Facility 2km overburden (6000mwe) Underground Laboratory TRIUMF Town Meeting 1-3 August 2007

  9. SNOLAB Status • Phase I Excavation (Cube Hall, Ladder Labs) complete. • Phase I Outfitting of the new personnel facilities and experimental spaces well under way and are expected to be completed early 2008. • Phase II excavation of Cryopit is under way in parallel with Phase I outfitting. Announcement expected later this month. Excavation will take till March 2008 with completion of outfitting Fall 2008. • SNOLAB Workshop VI August 22-24 in Sudbury. TRIUMF Town Meeting 1-3 August 2007

  10. LADDER LABS

  11. Cryopit: 1 of 2008: DEAP/CLEAN 2009: LUX 2015?: EXO 2015?: 1T GERDA 2015?: CLEAN-100T Siting Experiments at SNOLAB Cube Hall: 1 of 2008: DEAP/CLEAN 2009: PICASSO-III 2009: LUX SNO Utility Rm: Now: PICASSO-IB (2kg) SNO Control Rm: 2007: DEAP-1 Ladder Labs: 2 of 2009: PICASSO IIB 2009: EXO-200-Gas 2009: Majorana (TBD) 2010: CDMS SNO Cavern: 2008: SNO+ TRIUMF Town Meeting 1-3 August 2007

  12. SNO • Ended data taking 28 Nov 2006 • Most heavy water returned June 2007 • Finish decommissioning end of 2007 TRIUMF Town Meeting 1-3 August 2007

  13. SNO+ Science: One Slide • double beta decay with Nd-loaded scintillator • statistical reach down to 30 meV with 500 kg 150Nd • statistical reach below 100 meV with 0.1% Nd (natural) • exploit pep solar neutrinos for precision studies of neutrino-matter couplings • pep allows for it to be precision • SNOLAB depths allows for us (and only us) to do it well • MSW is the most sensitive probe of neutrino-matter couplings (e.g. non-standard interactions) and could reveal new physics • geo-neutrinos: SNO+ would have 4 times better signal-to-reactor background compared to KamLAND; SNO+ measurement would be the first to impact fundamental Earth sciences • reactor neutrinos: demonstration that oscillation spectral dip moves as L/E; combined fit would improve knowledge of the 1-2 neutrino mixing parameters • very good supernova neutrino capability

  14. SNO+ AV Hold Down Existing AV Support Ropes TRIUMF Town Meeting 1-3 August 2007

  15. SNO+ AV Hold Down Existing AV Support Ropes AV Hold Down Ropes TRIUMF Town Meeting 1-3 August 2007

  16. 108 simulated e-’s 108 simulated e-’s 100 simulated WIMPs 100 simulated WIMPs Concept Demonstrated Experimentally at LANL DEAP-0 IV’rth SNOLAB Workshop, August (2005) www.snolab2005.snolab.ca DEAP - Dark matter Experiment with Argon and Pulse-shape-discrimination M.G.Boulay and A.Hime, Astroparticle Physics 25, 179 (2006) Prompt/Singlet Light ( ~ 6 ns) I1 / I3 ~ 0.3 I1 / I3 ~ 3.0 Late/Triplet Light ( ~ 1.6 s)

  17. DEAP/CLEAN TRIUMF Town Meeting 1-3 August 2007

  18. TRIUMF • TRIUMF is Canada’s National Laboratory for Particle Physics, and maintains high capabilities in detector design, construction and the electronics/DAQ necessary to interface to detectors. • SNOLAB will develop its own teams for the unique aspects of underground science: extreme limits on radioactivity and underground deployment • Need to develop mechanisms for setting priorities and communicating between laboratories.

  19. TRIUMF-SNOLAB collaboration • Engineering (National lab culture) • Detector development • Cryogenic systems • Electronics • Data acquisition • Machining/fabrication • All SNOLAB projects are looking for collaborators

  20. Canadian Universities at SNOLAB Queen’s: (Boulay, Chen, McDonald, Noble, Rau + new position) SNO, SNO+, DEAP/Clean, PICASSO, CDMS Carleton: (Bellerive, Graham, Sinclair) SNO, EXO, DEAP/Clean Laurentian: (Farine, Virtue, Wachowski) SNO, EXO, SNO+, HALO, PICASSO Alberta:( Hallin, Krauss, new position) SNO, SNO+, DEAP/Clean, PICASSO Montreal (Azeulos, Lassard, Leroy, Zacek) PICASSO SNOLAB (Cleveland, Duncan, Ford, Jillings, Lawson)

  21. SNOLAB Meeting and Office Space Material Handling Clean Room Lab and Staging TRIUMF Town Meeting 1-3 August 2007

  22. SNOLAB TRIUMF Town Meeting 1-3 August 2007

  23. SNOLAB Phase II Cryopit Cube Hall Ladder Labs Utility Area Personnel facilities SNO Cavern TRIUMF Town Meeting 1-3 August 2007

  24. Laboratory Space • Laboratory and support spaces will be operated as Class 2000 clean rooms. 10 HEPA filtered air changes per hour. • Infrastructure includes: 2MW electrical service, 1 MW chiller capacity, emergency generator, Ultra Pure Water facility, Low background counting facility, high bandwidth network access, chemistry facilities, underground machine shop, light gauge rail line for material transport.

  25. Excavation Status - Phase I Excavation (Cube Hall, Ladder Labs) Complete - Phase II Excavation Progressing

  26. Lab Entrance

  27. Personnel Area

  28. Personnel Area

  29. Bladder Room

  30. LADDER LABS

  31. CUBE HALL

  32. CUBE HALL

  33. Cryopit Top Access

  34. END

  35. Title TRIUMF Town Meeting 1-3 August 2007

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