原子能科学技术
原子能科學技術
원자능과학기술
ATOMIC ENERGY SCIENCE AND TECHNOLOGY
2010年
3期
339-343
,共5页
胡继峰%张国光%姚泽恩%窦玉玲%丰树强%金孙均
鬍繼峰%張國光%姚澤恩%竇玉玲%豐樹彊%金孫均
호계봉%장국광%요택은%두옥령%봉수강%금손균
热中子探测器%灵敏度%能谱%探测效率%时间分辨
熱中子探測器%靈敏度%能譜%探測效率%時間分辨
열중자탐측기%령민도%능보%탐측효솔%시간분변
thermal neutron detector%sensitivity%energy spectrum%detection efficien-cy%time resolution
利用MCNP和Garfield程序模拟粒子与高阻性板室(RPC)热中子探测器的作用过程,计算出了转换体Gd_2O_3的最佳厚度和高阻性板室探测器对中子、γ的灵敏度,并得出了热中子和1.25 MeV γ与探测器作用产生的电子能谱.最终利用模拟数据给出了RPC热中子探测器的探测效率和时间分辨随电场、混合气体比例的变化规律,得到了最佳的电场强度和混合气体比例.
利用MCNP和Garfield程序模擬粒子與高阻性闆室(RPC)熱中子探測器的作用過程,計算齣瞭轉換體Gd_2O_3的最佳厚度和高阻性闆室探測器對中子、γ的靈敏度,併得齣瞭熱中子和1.25 MeV γ與探測器作用產生的電子能譜.最終利用模擬數據給齣瞭RPC熱中子探測器的探測效率和時間分辨隨電場、混閤氣體比例的變化規律,得到瞭最佳的電場彊度和混閤氣體比例.
이용MCNP화Garfield정서모의입자여고조성판실(RPC)열중자탐측기적작용과정,계산출료전환체Gd_2O_3적최가후도화고조성판실탐측기대중자、γ적령민도,병득출료열중자화1.25 MeV γ여탐측기작용산생적전자능보.최종이용모의수거급출료RPC열중자탐측기적탐측효솔화시간분변수전장、혼합기체비례적변화규률,득도료최가적전장강도화혼합기체비례.
The sensitivities to γ-ray and neutron were simulated by MCNP and Garfield programs for the Gd-coated resistive plate chambers thermal neutron detector. The elec-tron energy spectra produced by the detector interacting with the thermal neutron and 1.25 MeV γ-ray were also given. At last, the relationship between the time resolution and the detection efficiency with the electric field and the proportion of the mixture gas were calculated. By using the simulating data, the optimal electric field and the propor-tion of the mixture were presented.
