Measuring cosmogenic Li9 background in a reactor neutrino experiment

Preprint

17 April 2006

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ex/0604034

Abstract

Cosmogenic isotopes 9Li and 8He produced in the detector are the most problematic background in the reactor neutrino experiments designed to determine precisely the neutrino mixing angle theta13. The average time interval of cosmic-ray muons in the detector is often on the order of the lifetimes of the 9Li and 8He isotopes. We have developed a method for determining this kind of background from the distribution of time since last muon for muon rate up to about 20 Hz when the background-to-signal ratio is small, on the order of a few percents.

Keywords

REACTOR NEUTRINO EXPERIMENTS
EXPERIMENT COSMOGENIC
LI9 BACKGROUND
ISOTOPES
9LI

All Related Versions

Version 1, 2006-04-17, ArXiv
Published version: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 564 (1), 471.

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