https://doi.org/10.1140/epjc/s10052-014-2834-2
Regular Article - Experimental Physics
Evaluation of the neutron background in CsI target for WIMP direct detection when using a reactor neutrino detector as a neutron veto system
1
Department of Mathematics and Physics, Fujian University of Technology, Fuzhou , 350118, China
2
School of Physics, Nankai University, Tianjin , 300071, China
* e-mail: xuy@fjut.edu.cn
Received:
15
December
2013
Accepted:
23
March
2014
Published online:
5
April
2014
A direct Weakly Interacting Massive Particle (WIMP) detector with a neutron veto system is designed to better reject neutrons. An experimental configuration is studied in the present paper: a WIMP detectors with CsI(Na) target is placed inside a reactor neutrino detector. The neutrino detector is used as a neutron veto device. The neutron background for the experimental design has been estimated using the Geant4 simulation. The results show that the neutron background can decrease to O(0.01) events per year per tonne of CsI(Na). We calculate the sensitivity to spin-independent WIMP-nucleon elastic scattering. An exposure of 1 tonne 
year could reach a cross-section of about 3
pb.
© SIF and Springer-Verlag Berlin Heidelberg, 2014
