Determination of the proton and alpha-particle light-response functions for the KamLAND, BC-501A and BC-517H liquid scintillators

Autor: Werner Tornow, B. Braizinha, J. Esterline, Hugon J Karwowski
Rok vydání: 2010
Předmět:
Zdroj: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 623:1046-1049
ISSN: 0168-9002
DOI: 10.1016/j.nima.2010.08.027
Popis: A cylindrical 5.1 cm×5.1 cm scintillator cell filled with the KamLAND liquid scintillator has been exposed to monoenergetic neutron beams produced via the 2H(d,n)3He reaction to measure the proton light-response function for energies up to 10 MeV. Using Birks’ recipe, the α -particle light-response function was derived from these data. The same method was applied to the BC-501A and BC-517H liquid scintillators to check on the systematic accuracy of the present data. The proton and α -particle light-response functions are needed to correct the KamLAND antineutrino prompt energy spectrum for background effects caused by the reaction C 13 ( α , n ) O 16 . Especially, the geo-antineutrino energy regime measured in the KamLAND experiment is contaminated by background events from this reaction.
Databáze: OpenAIRE