Sensitivity of Hybrid Sensitivity of Hybrid Resistive Plate Chambers Resistive Plate Chambers to Low-Energy Neutrons to Low-Energy Neutrons Byungsik Hong Korea Detector Laboratory, Korea University M. Ito, T.I. Kang, B.I. Kim, H.C. Kim, J.H. Kim, K.B. Lee, K. S. Lee, S. Park, M.S. Ryu, K.S. Sim Korea Detector Laboratory, Korea University S.J. Hong Neuroscience Research Institute, Gachon Medical School
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Sensitivity of Hybrid Resistive Plate Chambers to Low-Energy Neutrons
Sensitivity of Hybrid Resistive Plate Chambers to Low-Energy Neutrons. Byungsik Hong Korea Detector Laboratory, Korea University. M. Ito, T.I. Kang, B.I. Kim, H.C. Kim, J.H. Kim, K.B. Lee , K.S. Lee, S. Park, M.S. Ryu , K.S. Sim Korea Detector Laboratory, Korea University S.J. Hong - PowerPoint PPT Presentation
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Sensitivity of Hybrid Sensitivity of Hybrid Resistive Plate Chambers to Resistive Plate Chambers to Low-Energy NeutronsLow-Energy Neutrons
Byungsik HongKorea Detector Laboratory, Korea University
M. Ito, T.I. Kang, B.I. Kim, H.C. Kim, J.H. Kim, K.B. Lee, K.S. Lee, S. Park, M.S. Ryu, K.S. Sim
Korea Detector Laboratory, Korea UniversityS.J. Hong
Neuroscience Research Institute, Gachon Medical School
Oct. 10-12, 2005 VIII RPC Workshop 2
Outline
1. Motivation
2. Detector construction and setup
3. Results Gd-coated single gap with strip readout Gd-coated double gap with pad readout LiF-coated double gap with pad readout
4. Conclusions
Oct. 10-12, 2005 VIII RPC Workshop 3
Motivation
1. Why do we want to measure low energy neutrons? Crucial to detect anti-personal mines and explosive
underground, etc. Possible application to imaging devices
2. If the R&D is successful, then Easy-to-build neutron detector Cheap and large neutron detection system
Oct. 10-12, 2005 VIII RPC Workshop 4
Basic Idea
1.Coating the inner surfaces of electrodes with neutron sensitive materials
2.Conditions for neutron detectors The neutron capture cross section for coating material
should be well known in advance over a wide range of energy.
The sensitivity should depend mostly on the capture cross section for neutrons.
Oct. 10-12, 2005 VIII RPC Workshop 5
Candidate 1Interesting isotopes are about 30% in natural Gd2O3.Ref.) M. Abbrescia et al., NIMA 533 (2004) 149.
Mass No. %152 0.2154 2.2155 14.8156 20.5157 15.7158 24.8160 21.8