title: Development of a fast neutron spectrometer composed of silicon-SSD and position-sensitive proportional counters.
abstract: A new fast neutron spectrometer has been developed. The spectrometer is composed of a silicon surface barrier detector and three position-sensitive proportional counters with methane gas working as counting gas and a radiator. A collimated incident neutron interacts with a hydrogen atom in the methane gas to generate a recoil proton. The position information on the path of the recoil proton obtained from the three position-sensitive proportional counters gives the recoil angle. In the meanwhile, the energy of the recoil protons is measured with the three proportional counters and the silicon surface barrier detector. The characteristics of the spectrometer were evaluated with a monoenergetic neutron beam. The best energy resolution was 1.8% for 5.0 MeV neutrons.
authors.affiliation: National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, 305-8568, Japan. t-matsumoto@aist.go.jp
authors.forename: T
authors.initials: T
authors.lastname: Matsumoto
authors.forename: H
authors.initials: H
authors.lastname: Harano
authors.forename: Y
authors.initials: Y
authors.lastname: Ito
authors.forename: A
authors.initials: A
authors.lastname: Uritani
authors.forename: K
authors.initials: K
authors.lastname: Emi
authors.forename: K
authors.initials: K
authors.lastname: Kudo
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004781:Environmental Exposure / Q000032:analysis; D004867:Equipment Design; D019544:Equipment Failure Analysis / Q000295:instrumentation* / Q000379:methods; D005214:Fast Neutrons; D015233:Models, Statistical; D009010:Monte Carlo Method; D016273:Occupational Exposure / Q000032:analysis*; D011829:Radiation Dosage; D011835:Radiation Protection / Q000295:instrumentation* / Q000379:methods; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D012588:Scintillation Counting; D012680:Sensitivity and Specificity; D012825:Silicon / Q000528:radiation effects; D013057:Spectrum Analysis / Q000295:instrumentation* / Q000379:methods; D014159:Transducers
chemical_list: D012825:Silicon