Measurement of radium concentration in water with Mn-coated beads at the Sudbury Neutrino Observatory
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Measurement of radium concentration in water with Mn-coated beads at the Sudbury Neutrino Observatory
We describe a method to measure the concentration of Ra and Ra in the heavy water target used to detect solar neutrinos at the Sudbury Neutrino Observatory and in the surrounding light water shielding. A water volume of 50–400 m from the detector is passed through columns which contain beads coated with a compound of manganese oxide onto which the Ra dissolved in the water is adsorbed. The colu...
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The Sudbury Neutrino Observatory consists of a 1 kiloton heavy water Cherenkov detector able to detect and reconstruct high-energy muons created from cosmic ray showers and atmospheric neutrino interactions. By measuring the flux of through-going muons as a function of zenith angle, the SNO experiment can distinguish between the oscillated and un-oscillated portion of the neutrino flux. This re...
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The technique used at the Sudbury Neutrino Observatory (SNO) to measure the concentration of Rn in water is described. Water from the SNO detector is passed through a vacuum degasser (in the light water system) or a membrane contact degasser (in the heavy water system) where dissolved gases, including radon, are liberated. The degasser is connected to a vacuum system which collects the radon on...
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The Sudbury Neutrino Observatory is a second-generation water Cherenkov detector designed to determine whether the currently observed solar neutrino de"cit is a result of neutrino oscillations. The detector is unique in its use of D 2 O as a detection medium, permitting it to make a solar model-independent test of the neutrino oscillation hypothesis by comparison of the chargedand neutral-curre...
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A. B. McDonald Physics Department Queen's University Kingston, Ontario CANADA K7L 3N6 For the SNO Collaboration e-mail [email protected] Abstract The Sudbury Neutrino Observatory uses 1000 tonnes of heavy water in an ultraclean Cherenkov detector situated 2 km underground in Ontario, Canada to study neutrinos from the Sun and other astrophysical sources. The Charged Current (CC) reaction on deuteri...
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ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
سال: 2003
ISSN: 0168-9002
DOI: 10.1016/s0168-9002(03)00616-8