Performance evaluation of the KamLAND2 prototype detector

  • Jun Nakane
Keywords: Neutrinoless Double Beta Decay, KamLAND-Zen, KamLAND, Double Beta Decay

Abstract

To achieve the sensitivity improvements moving from the KamLAND-Zen experiment to the
next- generation KamLAND2-Zen experiment, we constructed the KamLAND2 prototype de
tector to preliminarily evaluate the proposed improvements to increase the light yield, including
the instal- lation of high quantum efficiency photomultiplier tubes, light-collection mirrors, and
high emission liquid scintillator. The performance evaluation using this detector showed that
the installation of light-collection mirrors alone can increase the light yield by a factor 1.7 to 2.6.
Furthermore, the observed light yield showed remarkable stability within the margin of error
over a long period of about one year. On the other hand, hardware problems and insufficient
tuning of the simulation were also identified.

Published
2025-06-21
How to Cite
[1]
J. Nakane, “Performance evaluation of the KamLAND2 prototype detector”, Journal of Advanced Instrumentation in Science, vol. 2025, no. 1, Jun. 2025.
Section
Regular Articles