DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Characterization of water-based liquid scintillator for Cherenkov and scintillation separation

Journal Article · · European Physical Journal. C, Particles and Fields

Abstract This paper presents measurements of the scintillation light yield and time profile for a number of concentrations of water-based liquid scintillator, formulated from linear alkylbenzene (LAB) and 2,5-diphenyloxazole (PPO). We find that the scintillation light yield is linear with the concentration of liquid scintillator in water between 1 and 10% with a slope of $$$$127.9\pm 17.0$$$$ 127.9 ± 17.0 ph/MeV/concentration and an intercept value of $$$$108.3\pm 51.0$$$$ 108.3 ± 51.0 ph/MeV, the latter being illustrative of non-linearities with concentration at values less than 1%. This is larger than expected from a simple extrapolation of the pure liquid scintillator light yield. The measured time profiles are consistently faster than that of pure liquid scintillator, with rise times less than 250 ps and prompt decay constants in the range of 2.1–2.85 ns. Additionally, the separation between Cherenkov and scintillation light is quantified using cosmic muons in the CHESS experiment for each formulation, demonstrating an improvement in separation at the centimeter scale. Finally, we briefly discuss the prospects for large-scale detectors.

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-05CH11231; AC02-98CH10886; SC0018974
OSTI ID:
1664491
Alternate ID(s):
OSTI ID: 1706657; OSTI ID: 1693389; OSTI ID: 22980538
Journal Information:
European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Journal Issue: 9 Vol. 80; ISSN 1434-6044
Publisher:
SpringerCopyright Statement
Country of Publication:
Germany
Language:
English

References (17)

Metal-loaded organic scintillators for neutrino physics journal August 2016
Absorption spectrum (380–700 nm) of pure water II Integrating cavity measurements journal January 1997
Measuring directionality in double-beta decay and neutrino interactions with kiloton-scale scintillation detectors journal June 2014
A new water-based liquid scintillator and potential applications
  • Yeh, M.; Hans, S.; Beriguete, W.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 660, Issue 1, p. 51-56 https://doi.org/10.1016/j.nima.2011.08.040
journal December 2011
Measurement of the beta-ray spectra of 90Sr-90Y journal August 1983
Optical properties of the clearest natural waters (200–800 nm) journal January 1981
Cherenkov and scintillation light separation in organic liquid scintillators journal November 2017
Review of Particle Physics journal August 2018
Sensitivity of a low threshold directional detector to CNO-cycle solar neutrinos journal May 2018
Separating double-beta decay events from solar neutrino interactions in a kiloton-scale liquid scintillator detector by fast timing
  • Elagin, Andrey; Frisch, Henry J.; Naranjo, Brian
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 849 https://doi.org/10.1016/j.nima.2016.12.033
journal March 2017
Experiment to demonstrate separation of Cherenkov and scintillation signals journal May 2017
Time response of water-based liquid scintillator from X-ray excitation journal January 2020
Current Status and Future Prospects of the SNO+ Experiment journal January 2016
Slow liquid scintillator candidates for MeV-scale neutrino experiments journal May 2019
Refractive Index of Liquid Mixtures: Theory and Experiment journal October 2010
Geant4—a simulation toolkit
  • Agostinelli, S.; Allison, J.; Amako, K.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 506, Issue 3 https://doi.org/10.1016/S0168-9002(03)01368-8
journal July 2003
Refractive index of water and steam as function of wavelength, temperature and density journal May 1990

Similar Records

Cherenkov and scintillation separation in water-based liquid scintillator using an LAPPDTM
Journal Article · 2022 · European Physical Journal. C, Particles and Fields · OSTI ID:1846326

Atmospheric charged $$K/\pi $$ ratio and measurement of muon annual modulation with a liquid scintillation detector at Soudan
Journal Article · 2019 · European Physical Journal. C, Particles and Fields · OSTI ID:1801600

Measurement of proton light yield of water-based liquid scintillator
Journal Article · 2023 · European Physical Journal. C, Particles and Fields (Online) · OSTI ID:1924149

Related Subjects