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Digital pulse-shape discrimination applied to an ultra-low-background gas-proportional counting system: first results

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Abstract

A new ultra-low-background proportional counter design was recently developed at Pacific Northwest National Laboratory (PNNL). This design, along with an ultra-low-background counting system which provides passive and active shielding with radon exclusion, has been developed to complement a new shallow underground laboratory (~30 m water-equivalent) constructed at PNNL. After these steps to mitigate dominant backgrounds (cosmic rays, external gamma-rays, radioactivity in materials), remaining background events do not exclusively arise from ionization of the proportional counter gas. Digital pulse-shape discrimination (PSD) is thus employed to further improve measurement sensitivity. In this work, a template shape is generated for each individual sample measurement of interest, a “self-calibrating” template. Differences in event topology can also cause differences in pulse shape. In this work, the temporal region analyzed for each event is refined to maximize background discrimination while avoiding unwanted sensitivity to event topology. This digital PSD method is applied to sample and background data, and initial measurement results from a biofuel methane sample are presented in the context of low-background measurements currently being developed.

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References

  1. Povinec P, Szarka J, Usacev S (1979) Nucl Instr Meth 163:369

    Article  CAS  Google Scholar 

  2. Wink R, Anselmann P, Dorflinger D, Hampel W, Heusser G, Kirsten T, Mogel P, Pernicka E, Plaga R, Schlosser C (1993) Nucl Instr Meth A 329:541–550

    Article  Google Scholar 

  3. Collon P, Kutschera W, Lu Z-T (2004) Annu Rev Nucl Part Sci 54:39–67

    Article  CAS  Google Scholar 

  4. Aalseth CE et al (2009) J Radioanal Nucl Chem 282:233–237

    Article  CAS  Google Scholar 

  5. Cleveland BT, Daily T, Davis R, Distel JR, Lande K, Lee CK, Wildenhain PS (1998) Astrophys J 496:505–526

    Article  CAS  Google Scholar 

  6. Bellotti E, Cremonesi O, Fiorini E, Gervasio G, Povinec P, Ragazzi S, Rossi L, Sverzelatti PP, Szarka J, Tabarelli de Fatis T, Zanotti L (1992) Nucl Instr Meth A 323:125–134

    Article  Google Scholar 

  7. Theodorsson P (1996) Measurement of weak radioactivity. World Scientific Publishing, Singapore

    Book  Google Scholar 

  8. Hennig W, Chu YX, Tan H, Fallu-Labruyere A, Warburton WK, Grzywacz R (2007) Nucl Instr Meth B 263:175–178

    Article  CAS  Google Scholar 

  9. Coleman DD, Liu C-L, Hackley KC, Pelphrey SR (1995) Environ Geosci 2(2):95–103

    Google Scholar 

  10. Hirayama H et al (2006) “The EGS5 code system”, report SLAC-R-730. Stanford Linear Accelerator Center, Stanford

    Google Scholar 

  11. Mook WG, van der Plicht J (1999) Radiocarbon 41(3):227–239

    CAS  Google Scholar 

Download references

Acknowledgments

This work was performed at the Pacific Northwest National Laboratory with Government support under Contract Number DE-AC06-76RLO-1830 awarded by the United States Department of Energy.

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Authors and Affiliations

  1. Pacific Northwest National Laboratory, 902 Battelle Boulevard, PO Box 999, Richland, WA, 99352, USA

    C. E. Aalseth, A. R. Day, E. S. Fuller, E. W. Hoppe, M. E. Keillor, E. K. Mace, A. W. Myers, C. T. Overman, M. E. Panisko, A. Seifert, G. A. Warren & R. M. Williams

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  1. C. E. Aalseth
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  2. A. R. Day
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  3. E. S. Fuller
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  4. E. W. Hoppe
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  12. R. M. Williams
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Correspondence to C. E. Aalseth.

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Aalseth, C.E., Day, A.R., Fuller, E.S. et al. Digital pulse-shape discrimination applied to an ultra-low-background gas-proportional counting system: first results. J Radioanal Nucl Chem 296, 823–827 (2013). https://doi.org/10.1007/s10967-012-2052-z

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  • DOI: https://doi.org/10.1007/s10967-012-2052-z

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