  SNO+ is a multipurpose neutrino experiment located approximately 2 km
underground in SNOLAB, Sudbury, Canada. The detector started taking physics
data in May 2017 and is currently completing its first phase, as a pure water
Cherenkov detector. The low trigger threshold of the SNO+ detector allows for a
substantial neutron detection efficiency, as observed with a deployed
^{241}Am^{9}Be source. Using a statistical analysis of one hour AmBe
calibration data, we report a neutron capture constant of 208.2 + 2.1(stat.) us
and a lower bound of the neutron detection efficiency of 46% at the center of
the detector.
