Detection of reactor neutrinos with a delayed signal of neutron capture on Hydrogen at RENO

The RENO experiment has been taking electron antineutrino data from the reactors at Hanbit nuclear power plant(Younggwang, Korea), using two identical detectors since 2011. The RENO experiment has measured using inverse beta decay events where neutrons are captured on Gadolinium(Gd). The result of RENO experimenth as published the results only the Gd-captured analysis 2012 and 2016. However, the neutrons also can be captured by hydrogen. Neutron captured on hydrogen analysis can give independent result from neutron capture on Gd analysis. Hydrogen analysis(nH) has longer time interval of delayed signal than Gd-captured and it contains more accidental background. We have measured number of the inverse beta decay events and the backgrounds even accidental and fast neutrons, Li/He. In RENO experiment, Hydrogen analysis can use the about 2000 days data and we have been preparing the result using 1500 days data.