The KIMS collaboration is an experimental group searching for the Weakly Interacting Massive Particle (WIMP) which is one of the strongest candidates of dark matter. In a WIMP search experiment, the neutron is an important background because the nuclear recoil signal of a neutron is indistinguishable from that of a WIMP. We have constructed a 20-liter liquid scintillation detector to measure the neutron background. We present the performance of the neutron detector, as well as its structure and electronics system. We have achieved a good neutron/gamma separation and a good position measurement. A position dependent energy calibration has also been performed to correct the nonlinear response of the detector for different particle incident positions.
Zhu, JJ,Kang, KJ,Li, YJ,et al. Performance of a large volume liquid scintillation detector for the measurement of fast neutrons[J]. JOURNAL OF THE KOREAN PHYSICAL SOCIETY,2005,47(2):#REF!.
Zhu, JJ.,Kang, KJ.,Li, YJ.,Kwak, JW.,Bhang, H.,...&李金.(2005).Performance of a large volume liquid scintillation detector for the measurement of fast neutrons.JOURNAL OF THE KOREAN PHYSICAL SOCIETY,47(2),#REF!.
Zhu, JJ,et al."Performance of a large volume liquid scintillation detector for the measurement of fast neutrons".JOURNAL OF THE KOREAN PHYSICAL SOCIETY 47.2(2005):#REF!.