Measurement of Light Yield Response of Gd-compatible Water-based Liquid Scintillator with the Brookhaven 1-ton testbed

S. Gwon; M. Askins; D. M. Asner; A. Baldoni; D. F. Cowen; R. Diaz Prerez; M. V. Diwan; S. Gokhale; S. Hans; P. Kumar; G. Lawley; S. Linden; G. D. Orebi Gann; J. Park; C. Reyes; R. Rosero; K. Siyeon; M. Smiley; J. J. Wang; M. Wilking; G. Yang; M. Yeh

arXiv · 2512.15968

Measurement of Light Yield Response of Gd-compatible Water-based Liquid Scintillator with the Brookhaven 1-ton testbed

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Abstract

The Water-based Liquid Scintillator (WbLS) enables hybrid detection by combining scintillation and Cherenkov signals, providing superior event reconstruction capabilities compared to conventional neutrino detectors. We measured the light yield of Gd-compatible WbLS at varying concentrations from 0.35\% to 1\% by mass, using cosmic-ray muons in a 1-ton scale detector at BNL. The light yield is measured as (69.16 $\pm$ 6.92) ph / MeV at 0.35\% concentration, which increased to (87.32 $\pm$ 8.73) ph / MeV at 1\%. These results establish a quantitative basis for optimizing future WbLS-based detectors in neutrino physics.

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S. Gwon, M. Askins, D. M. Asner, A. Baldoni, D. F. Cowen, R. Diaz Prerez, M. V. Diwan, S. Gokhale, S. Hans, P. Kumar, G. Lawley, S. Linden, G. D. Orebi Gann, J. Park, C. Reyes, R. Rosero, K. Siyeon, M. Smiley, J. J. Wang, M. Wilking, G. Yang, M. Yeh. 2025-12-17. Measurement of Light Yield Response of Gd-compatible Water-based Liquid Scintillator with the Brookhaven 1-ton testbed. https://arxiv.org/abs/2512.15968

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