June 22, 2020 to July 2, 2020
US/Central timezone

Updated Event Selection for the PROSPECT Experiment

Not scheduled
10m

Speaker

Xiaobin Lu (Oak Ridge National Laboratory, The University of Tennessee, Knoxville)

Description

PROSPECT aims to measure highly enriched $^{235}$U reactor anti-neutrino energy spectrum with high precision and to model-independently search for eV$^2$ sterile neutrino oscillations. PROSPECT is an optical segmented detector filled with $\sim$4 ton $^6$Li-loaded liquid scintillator and deployed at $\sim$7m from compact reactor core in HFIR(High Flux Isotope Reactor).

In order to detect reactor anti-neutrinos via IBD (Inverse Beta Decay) processes, we developed an analysis framework based on the liquid scintillator PSD (Pulse Shape Discrimination) particle-identification and the temporal-spatial correlations in the IBD processes. Additional cosmogenic veto cuts mitigate high on-surface cosmogenic backgrounds.

Previously we reported $^{235}$U anti-neutrino spectrum and sterile neutrino oscillation result based on $\sim$ 30 days’ reactor on data-taking. Here we describe improvements to the IBD event selection applied to a larger data set with approximately twice the IBD statistics.

Mini-abstract

Improved PROSPECT inverse beta decay event selection applied to 95 days reactor on data.

Experiment/Collaboration PROSPECT collaboration

Primary author

Xiaobin Lu (Oak Ridge National Laboratory, The University of Tennessee, Knoxville)

Presentation materials