Optical Scattering Lengths in Large Liquid-Scintillator Neutrino Detectors
Michael Wurm (1), Franz von Feilitzsch (1), Marianne Goeger-Neff (1),, Martin Hofmann (1), Tobias Lachenmaier (2), Timo Lewke (1), Teresa Marrodan, Undagoitita (1, 3), Quirin Meindl (1), Randoplh Moellenberg (1), Lothar, Oberauer (1), Walter Potzel (1), Marc Tippmann (1)
TL;DR
This paper measures optical scattering lengths of solvents PXE, LAB, and Dodecane for large liquid-scintillator neutrino detectors, highlighting LAB as the preferred choice based on wavelength-specific scattering data.
Contribution
It provides new laboratory measurements of scattering lengths for key solvents in the 415-440nm range, informing detector material selection.
Findings
LAB has favorable scattering properties for large detectors.
Rayleigh and Mie scattering contributions are quantified.
LAB is recommended for next-generation neutrino experiments.
Abstract
For liquid-scintillator neutrino detectors of kiloton scale, the transparency of the organic solvent is of central importance. The present paper reports on laboratory measurements of the optical scattering lengths of the organic solvents PXE, LAB, and Dodecane which are under discussion for next-generation experiments like SNO+, Hanohano, or LENA. Results comprise the wavelength range from 415 to 440nm. The contributions from Rayleigh and Mie scattering as well as from absorption/re-emission processes are discussed. Based on the present results, LAB seems to be the preferred solvent for a large-volume detector.
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