Table of Contents
Neutral Current Detectors for SNO (The R&D Program at WIPP)
The (Standard) Solar Neutrino Spectrum
Energy Dependent Neutrino Flux Suppression
Matter Induced (MSW) Oscillations
The SNO Detector
The SNO Collaboration
Neutrino Interactions in SNO
Cerenkov Signals & Backgrounds in SNO
Natural Series Decay Schemes
1992 Proposal to Develop NC Detectors for SNO
SNO Cutaway Showing NC Detector Array
Schematic Diagram of SNO NC Detector
He-3 Counters
He(n,p)t Events in 2.5 Atm (He:CH4 = 80:20)
Alpha Contamination in He(n,p)t Window
Depleted U-238 Calibration Spectrum
Photo of Early NC Detector Prototype
1992 Letter to WIPP from LANL
Early NC Detector Construction in Room G
LANL Enclosure in WIPP U/G
Carting Lead in the WIPP U/G
SS Background (Det. No. 3)
Electronics for Prototype Ni CVD
Ni CVD-S-01 Low Gain Channel
Po-210 Rate Drops with Time
Ni CVD-S-02 Low Gain Channel
Ni CVD-S-01 High Gain Channel
Ni CVD-S-02 High Gain Channel (no events)
Fast Neutrons Minimized
SS Detectors - Low Gain Channel
n’s 50 times lower than “rock”
Publication of Results
Contributors
NC Detector Assembly at Univ. of Washington
Assembled ND Detector strings at SNO
Conclusion
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