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A novel segmented-scintillator antineutrino detector

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Abstract
The next generation of very-short-baseline reactor experiments will require compact detectors operating at surface level and close to a nuclear reactor. This paper presents a new detector concept based on a composite solid scintillator technology. The detector target uses cubes of polyvinyltoluene interleaved with (LiF)-Li-6:ZnS(Ag) phosphor screens to detect the products of the inverse beta decay reaction. A multi-tonne detector system built from these individual cells can provide precise localisation of scintillation signals, making efficient use of the detector volume. Monte Carlo simulations indicate that a neutron capture efficiency of over 70% is achievable with a sufficient number of 6LiF: ZnS( Ag) screens per cube and that an appropriate segmentation enables a measurement of the positron energy which is not limited by gamma-ray leakage. First measurements of a single cell indicate that a very good neutron-gamma discrimination and high neutron detection efficiency can be obtained with adequate triggering techniques. The light yield from positron signals has been measured, showing that an energy resolution of 14%/root E(MeV) is achievable with high uniformity. A preliminary neutrino signal analysis has been developed, using selection criteria for pulse shape, energy, time structure and energy spatial distribution and showing that an antineutrino efficiency of 40% can be achieved. It also shows that the fine segmentation of the detector can be used to significantly decrease both correlated and accidental backgrounds.
Keywords
Neutrino detectors, Calorimeters, Neutron detectors (cold, thermal, fast neutrons), Particle identification methods, NEUTRONS, NEUTRINO

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Please use this url to cite or link to this publication:

Chicago
Abreu, Y, Y Amhis, L Arnold, G Ban, W Beaumont, M Bongrand, D Boursette, et al. 2017. “A Novel Segmented-scintillator Antineutrino Detector.” Journal of Instrumentation 12.
APA
Abreu, Y., Amhis, Y., Arnold, L., Ban, G., Beaumont, W., Bongrand, M., Boursette, D., et al. (2017). A novel segmented-scintillator antineutrino detector. JOURNAL OF INSTRUMENTATION, 12.
Vancouver
1.
Abreu Y, Amhis Y, Arnold L, Ban G, Beaumont W, Bongrand M, et al. A novel segmented-scintillator antineutrino detector. JOURNAL OF INSTRUMENTATION. 2017;12.
MLA
Abreu, Y, Y Amhis, L Arnold, et al. “A Novel Segmented-scintillator Antineutrino Detector.” JOURNAL OF INSTRUMENTATION 12 (2017): n. pag. Print.
@article{8565625,
  abstract     = {The next generation of very-short-baseline reactor experiments will require compact detectors operating at surface level and close to a nuclear reactor. This paper presents a new detector concept based on a composite solid scintillator technology. The detector target uses cubes of polyvinyltoluene interleaved with (LiF)-Li-6:ZnS(Ag) phosphor screens to detect the products of the inverse beta decay reaction. A multi-tonne detector system built from these individual cells can provide precise localisation of scintillation signals, making efficient use of the detector volume. Monte Carlo simulations indicate that a neutron capture efficiency of over 70\% is achievable with a sufficient number of 6LiF: ZnS( Ag) screens per cube and that an appropriate segmentation enables a measurement of the positron energy which is not limited by gamma-ray leakage. First measurements of a single cell indicate that a very good neutron-gamma discrimination and high neutron detection efficiency can be obtained with adequate triggering techniques. The light yield from positron signals has been measured, showing that an energy resolution of 14\%/root E(MeV) is achievable with high uniformity. A preliminary neutrino signal analysis has been developed, using selection criteria for pulse shape, energy, time structure and energy spatial distribution and showing that an antineutrino efficiency of 40\% can be achieved. It also shows that the fine segmentation of the detector can be used to significantly decrease both correlated and accidental backgrounds.},
  articleno    = {P04024},
  author       = {Abreu, Y and Amhis, Y and Arnold, L and Ban, G and Beaumont, W and Bongrand, M and Boursette, D and Buhour, JM and Castle, BC and Clark, K and Coupe, B and Cucoanes, AS and Cussans, D and De Roeck, A and D'Hondt, J and Durand, D and Fallot, M and Fresneau, S and Ghys, L and Giot, L and Guillon, B and Guilloux, G and Ihantola, S and Janssen, X and Kalcheva, S and Kalousis, LN and Koonen, E and Labare, Mathieu and Lehaut, G and Mermans, J and Michiels, Ianthe and Moortgat, C{\'e}line and Newbold, D and Park, J and Petridis, K and Pi{\~n}era, I and Pommery, G and Popescu, L and Pronost, G and Rademacker, J and Reynolds, A and Ryckbosch, Dirk and Ryder, N and Saunders, D and Shitov, YuA and Schune, M-H and Scovell, PR and Simard, L and Vacheret, A and Van Dyck, S and Van Mulders, P and van Remortel, N and Vercaemer, S and Waldron, A and Weber, A and Yermia, F},
  issn         = {1748-0221},
  journal      = {JOURNAL OF INSTRUMENTATION},
  keyword      = {Neutrino detectors,Calorimeters,Neutron detectors (cold,thermal,fast neutrons),Particle identification methods,NEUTRONS,NEUTRINO},
  language     = {eng},
  pages        = {20},
  title        = {A novel segmented-scintillator antineutrino detector},
  url          = {http://dx.doi.org/10.1088/1748-0221/12/04/P04024},
  volume       = {12},
  year         = {2017},
}

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