Acrylic purification and coatings

Journal Article · Wed Apr 27 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3579566· OSTI ID:21513190

Kuzniak, Marcin ^[1]

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1. Queen's University, Department of Physics, Kingston ON, K7L 3N6 (Canada)

Radon (Rn) and its decay daughters are a well-known source of background in direct WIMP detection experiments, as either a Rn decay daughter or an alpha particle emitted from a thin inner surface layer of a detector could produce a WIMP-like signal. Different surface treatment and cleaning techniques have been employed in the past to remove this type of contamination. A new method of dealing with the problem has been proposed and used for a prototype acrylic DEAP-1 detector. Inner surfaces of the detector were coated with a layer of ultra pure acrylic, meant to shield the active volume from alphas and recoiling nuclei. An acrylic purification technique and two coating techniques are described: a solvent-borne (tested on DEAP-1) and solvent-less (being developed for the full scale DEAP-3600 detector).

• OSTI ID: 21513190
• Journal Information: AIP Conference Proceedings, Vol. 1338, Issue 1; Conference: LRT-2010: Topical workshop on low radioactivity techniques, Sudbury (Canada), 28-29 Aug 2010; Other Information: DOI: 10.1063/1.3579566; (c) 2011 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
ALPHA PARTICLES
CLEANING
COATINGS
CONTAMINATION
DAUGHTER PRODUCTS
LAYERS
POLYMERS
PURIFICATION
RADON
SOLVENTS
SURFACE TREATMENTS
SURFACES
CHARGED PARTICLES
DECAY
ELEMENTS
FLUIDS
GASES
IONIZING RADIATIONS
ISOTOPES
NONMETALS
NUCLEAR DECAY
RADIATIONS
RARE GASES