2 research outputs found
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A laserball calibration device for the SNO+ scintillator phase
Located 2 km underground in SNOLAB, Sudbury, Canada, SNO+ is
a large scale liquid scintillator experiment that primarily aims to
search for neutrinoless double beta decay. Whilst SNO+ has light and
radioactive calibration sources external to the inner volume, an
internally deployed optical source is necessary for the full
characterization of the detector model. A laser diffuser ball
developed for SNO has previously demonstrated to be an effective
optical calibration device for both SNO and SNO+ water phase. Since
the introduction of liquid scintillator for SNO+, the material
compatibility, cleanliness, and radiopurity requirements of any
materials in contact with the internal medium have
increased. Improving on the original SNO laserball design, a new
laserball calibration device has been developed for the SNO+
scintillator phase with the goal of measuring the optical properties
of the detector and performing routine PMT gain and timing
calibrations. Simulations have been written to model the diffusion
properties to optimise optical and temporal performance for
calibration. Prototype laserballs have been built and characterised,
demonstrating sub-ns timing resolution and a quasi-isotropic light
distribution.</p
A laserball calibration device for the SNO+ scintillator phase
Located 2 km underground in SNOLAB, Sudbury, Canada, SNO+ is
a large scale liquid scintillator experiment that primarily aims to
search for neutrinoless double beta decay. Whilst SNO+ has light and
radioactive calibration sources external to the inner volume, an
internally deployed optical source is necessary for the full
characterization of the detector model. A laser diffuser ball
developed for SNO has previously demonstrated to be an effective
optical calibration device for both SNO and SNO+ water phase. Since
the introduction of liquid scintillator for SNO+, the material
compatibility, cleanliness, and radiopurity requirements of any
materials in contact with the internal medium have
increased. Improving on the original SNO laserball design, a new
laserball calibration device has been developed for the SNO+
scintillator phase with the goal of measuring the optical properties
of the detector and performing routine PMT gain and timing
calibrations. Simulations have been written to model the diffusion
properties to optimise optical and temporal performance for
calibration. Prototype laserballs have been built and characterised,
demonstrating sub-ns timing resolution and a quasi-isotropic light
distribution.</p