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PVC Extrusion Development and Production for the NOvA Neutrino Experiment

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arxiv 1601.00908 v1 pith:OECJYOC2 submitted 2016-01-05 physics.ins-det hep-ex

PVC Extrusion Development and Production for the NOvA Neutrino Experiment

R.L. Talaga , J.J. Grudzinski , S. Phan-Budd , A. Pla-Dalmau , J.E. Fagan , C. Grozis , K.M. Kephart This is my paper
classification physics.ins-det hep-ex
keywords extrusionsdetectornovaexperimenthighneutrinoproducedproduction
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We have produced large and highly-reflective open-cell PVC extrusions for the NOvA neutrino oscillation experiment. The extrusions were sealed, instrumented, assembled into self-supporting detector blocks, and filled with liquid scintillator. Each Far Detector block stands 15.7 m high, is 15.7 m wide and 2.1 m thick. More than 22,000 extrusions were produced with high dimensional tolerance and robust mechanical strength. This paper provides an overview of the NOvA Far Detector, describes the preparation of the custom PVC powder, and the making of the extrusions. Quality control was a key element in the production and is described in detail.

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