# Neutrino 2018 - XXVIII International Conference on Neutrino Physics and Astrophysics

4-9 June 2018
Heidelberg
Europe/Berlin timezone
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# Contribution Poster 0vbb

Poster (participating in poster prize competition)

# AmBe source calibration in the SNO+ water phase

• Mr. Yan LIU

## Authorship annotation

for the SNO+ collaboration

## Session and Location

Monday Session, Poster Wall #71 (Auditorium Gallery Right)

## Abstract content

SNO+ is a multipurpose neutrino experiment located approximately 2 km underground in SNOLAB, Sudbury, Canada. It started taking physics data in May 2017 and is currently completing its first phase, as a pure water Cherenkov detector. One physics goal of this water phase is to detect reactor antineutrinos for the first time using a pure water target. A key component of this search is the identification of the 2.2 MeV $\gamma$ from the inverse beta decay neutron capturing on hydrogen. The low trigger threshold of the SNO+ detector allows for a substantial detection efficiency of these neutrons, as observed with a deployed $^{241}$Am$^9$Be source. This poster presents the recent effort on the AmBe calibration and an analysis of the obtained coincident pairs of 4.4 MeV and 2.2 MeV $\gamma$s in the SNO+ detector.

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