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Title: PVC extrusion development and production for the NOvA neutrino experiment

Abstract

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. As a result, quality control was a key element in the production and is described in detail.

Authors:
 [1];  [1]; ORCiD logo [2];  [3];  [3];  [4]; ORCiD logo [3]
  1. Argonne National Lab. (ANL), Lemont, IL (United States)
  2. Argonne National Lab. (ANL), Lemont, IL (United States); Winona State Univ., Winona, MN (United States)
  3. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  4. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Extrutech Plastics, Inc., Manitowoc, WI (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1336429
Report Number(s):
FERMILAB-PUB-15-049-ND-PPD; arXiv:1601.00908
Journal ID: ISSN 0168-9002; 1413107
Grant/Contract Number:
AC02-07CH11359
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 861; Journal Issue: C; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; PVC; plastic; extrusions; neutrino detector

Citation Formats

Talaga, R. L., Grudzinski, J. J., Phan-Budd, S., Pla-Dalmau, A., Fagan, J. E., Grozis, C., and Kephart, K. M. PVC extrusion development and production for the NOvA neutrino experiment. United States: N. p., 2017. Web. doi:10.1016/j.nima.2017.03.004.
Talaga, R. L., Grudzinski, J. J., Phan-Budd, S., Pla-Dalmau, A., Fagan, J. E., Grozis, C., & Kephart, K. M. PVC extrusion development and production for the NOvA neutrino experiment. United States. doi:10.1016/j.nima.2017.03.004.
Talaga, R. L., Grudzinski, J. J., Phan-Budd, S., Pla-Dalmau, A., Fagan, J. E., Grozis, C., and Kephart, K. M. Wed . "PVC extrusion development and production for the NOvA neutrino experiment". United States. doi:10.1016/j.nima.2017.03.004. https://www.osti.gov/servlets/purl/1336429.
@article{osti_1336429,
title = {PVC extrusion development and production for the NOvA neutrino experiment},
author = {Talaga, R. L. and Grudzinski, J. J. and Phan-Budd, S. and Pla-Dalmau, A. and Fagan, J. E. and Grozis, C. and Kephart, K. M.},
abstractNote = {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. As a result, quality control was a key element in the production and is described in detail.},
doi = {10.1016/j.nima.2017.03.004},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 861,
place = {United States},
year = {Wed Mar 08 00:00:00 EST 2017},
month = {Wed Mar 08 00:00:00 EST 2017}
}

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  • The NOvA collaboration blended and delivered 8.8 kt (2.72M gal) of liquid scintillator as the active detector medium to its near and far detectors. The composition of this scintillator was specifically developed to satisfy NOvA's performance requirements. A rigorous set of quality control procedures was put in place to verify that the incoming components and the blended scintillator met these requirements. The scintillator was blended commercially in Hammond, IN. The scintillator was shipped to the NOvA detectors using dedicated stainless steel tanker trailers cleaned to food grade.
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